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Journal articles on the topic 'Traction electric motor'
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1
Baek, Seung-Yun, Seung-Min Baek, Hyeon-Ho Jeon, et al. "Traction Performance Evaluation of the Electric All-Wheel-Drive Tractor." Sensors 22, no. 3 (2022): 785. http://dx.doi.org/10.3390/s22030785.
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This study aims to design, develop, and evaluate the traction performance of an electric all-wheel-drive (AWD) tractor based on the power transmission and electric systems. The power transmission system includes the electric motor, helical gear reducer, planetary gear reducer, and tires. The electric system consists of a battery pack and charging system. An engine-generator and charger are installed to supply electric energy in emergency situations. The load measurement system consists of analog (current) and digital (battery voltage and rotational speed of the electric motor) components using a controller area network (CAN) bus. A traction test of the electric AWD tractor was performed towing a test vehicle. The output torques of the tractor motors during the traction test were calculated using the current and torque curves provided by the motor manufacturer. The agricultural work performance is verified by comparing the torque and rpm (T–N) curve of the motor with the reduction ratio applied. The traction is calculated using torque and specifications of the wheel, and traction performance is evaluated using tractive efficiency (TE) and dynamic ratio (DR). The results suggest a direction for the improvement of the electric drive system in agricultural research by comparison with the conventional tractor through the analysis of the agricultural performance and traction performance of the electric AWD tractor.
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Baek, Seung-Yun, Hyeon-Ho Jeon, Wan-Soo Kim, Yeon-Soo Kim, Cheol-Gyu Park, and Yong-Joo Kim. "Data Analysis and Traction Performance Evaluation of an Electric All-Wheel Drive Tractor During Agricultural Operation." Journal of the ASABE 67, no. 5 (2024): 1217–29. http://dx.doi.org/10.13031/ja.15952.
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Highlights The study evaluated the feasibility of using a new type of platform, the electric AWD tractor, for agricultural operations. The data for key components of the electric AWD tractor during plowing were analyzed. The traction performance of the electric AWD tractor was evaluated via tractive efficiency and dynamic ratio. The electric AWD tractor was expected to replace conventional tractors in terms of traction performance. Abstract. Owing to the increasing need for research on electric all-wheel drive (AWD) systems, an investigation on the AWD systems applicable to tractors was conducted in this study. The experimental platform consisted of an electric power transmission system including four sets of electric motors, helical and planetary reducers, wheels, and an electrical system including chargers, batteries (LiFePO4), converters, and inverters. The drive control system of the electric AWD tractor was divided into the AWD and the motor controller. The data measurement system consisted of analog (current and traction force) and digital (battery voltage, current, motor rotational speed, state of charge (SOC) level, and travel speed) components that communicate using a controller area network (CAN) bus. Data measured during plowing were used to calculate motor power, motor torque, traction power, and driving power to analyze the power consumption of an electric AWD tractor. The traction performance of the electric AWD tractor was evaluated using tractive efficiency, calculated values (traction power and driving power), and dynamic ratio. The maximum and minimum average voltage of the electric AWD tractor during plowing were 72.2 and 64.7 V, respectively, and the average value was measured as 68.2 V. The average value of the maximum current applied to the inverter was 362.4 A, and the mean value was measured as 187.5 A. The average value of the maximum rotational speed of the four motors was 2111.5 rpm, while the mean rotational speed during the operation was 1131.9 rpm. The average value of motor torque was 79.4 Nm. The decrease rate of battery SOC level per minute was calculated as an average of 1.4%/min. The maximum values of the traction and driving power during plowing were 42.0 and 73.7 kW. The maximum tractive efficiency (TE) was 0.77, with an average TE of 0.47. The maximum dynamic ratio (DR) was 0.28, with an average DR of 0.18. The TE of a conventional tractor was found to be a maximum of 0.61, with averages of 0.41, respectively. The average TE of the electric AWD tractor was approximately 14% higher than that of the conventional tractor. Data analysis indicates that the electric AWD tractor performing speed control is vulnerable to slip, and further research is necessary to improve AWD system performance through speed and slip control. Keywords: Data analysis, Data measurement system, Electric AWD tractor, Plowing, Traction performance.
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Godzhaev, Zakhid A. "Justifi cation of the parameters of an electromechanical transmission for a tractor of traction class of 0.6-0.9 traction class and coordination of traction characteristics." Agricultural Engineering, no. 1 (2023): 63–70. http://dx.doi.org/10.26897/2687-1149-2023-1-63-70.
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The parameters of electromechanical transmission for the tractor of 0.6-0.9 traction class are selected based on the analysis of traction and hitching characteristics of the complete machine. The authors have made theoretical calculations of the operating characteristics of the prototype tractor with an internal combustion engine and the tractor layout with an electric drive, traction calculation of the prototype tractor and the tractor layout, and calculation of the characteristics of the electric drive and electric motors. For the calculations, a six-speed manual variable gearbox was selected. The initial data for performing the calculations were obtained from the results of tractor traction tests in the North Caucasian machine test station. Two profi le backgrounds of the support base were selected: a fi eld prepared for sowing (fallow) and stubble. As a result of research, it was established that a tractor-model designed on the basis of the self-propelled chassis of a pulling class 0.6 to. 0.9 with capacity up to 50 kW on the “Fiel d prepared for sowing” background reaches the greatest towing effi ciency (0.53) with the 15 kW electric motor and the greatest drawbar pull (5.78 kN) with the 18 kW electric motor. On the “Stubble” background, for 15, 18 and 22kW electric motors, the pulling effi ciency is 68%, but the tractor layout with the 22kW electric motor can develop the maximum drawbar pull of 11.35kN. The maximum pulling power of 16.7 kN is observed in the prototype tractor with an internal combustion engine. Therefore, the 15-kW electric motor can be the only most suitable substitute for a combustion engine by traction effi ciency.
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Gavrilović, Branislav, and Baboshin Aleksandrovich. "Simulations of electric multiple unit series 413/417 drives on the electrified tracks of "Serbian Railways"." Engineering Today, no. 00 (2024): 27. http://dx.doi.org/10.5937/engtoday2400003g.
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In the paper, the Matlab-Simulink model of simulation of operation of the ŽS 413/417 series electric multiple unit (EMU) in traction and braking mode is exposed where changes are observed: stator currents of three-phase traction motors, traction electric motor speeds and electric multiple unit, electromagnetic torque on the rotor shaft of the traction electric motor and DC bus voltage. The model allowed review of the listed parameters for: different allowed values of contact network voltage and total voltage distortion at the place of connection of the electric multiple unit to the contact network, different mechanical loads of electric multiple unit and traction electric motor and different train speeds and rotation of traction electric motors. Appropriate conclusions were made through the analysis of the simulation results obtained.
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Gavrilovic, Branislav, and Vladimir Aleksandrovich Baboshin. "Simulations of the operation of the fast light innovative regional train from “Serbian Railways” in traction and electric braking mode." Mechanical Engineering Advances 2, no. 1 (2023): 1214. http://dx.doi.org/10.59400/mea.v2i1.1214.
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In the paper, the MATLAB-Simulink model of simulation of operation of the fast light innovative regional train from “Serbian Railways” in traction and braking mode is exposed where changes are observed: stator currents of three-phase traction motors, traction electric motor speeds and electric multiple unit, electromagnetic torque on the rotor shaft of the traction electric motor and diirect current bus voltage. The model allowed review of the listed parameters for: different allowed values of contact network voltage and total voltage distortion at the place of connection of the electric multiple unit to the contact network, different mechanical loads of electric multiple unit and traction electric motor and different train speeds and rotation of traction electric motors. Appropriate conclusions were made through the analysis of the simulation results obtained.
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Liudvinavičius, Lionginas, Leonas Povilas Lingaitis, Stasys Dailydka, and Virgilijus Jastremskas. "THE ASPECT OF VECTOR CONTROL USING THE ASYNCHRONOUS TRACTION MOTOR IN LOCOMOTIVES." TRANSPORT 24, no. 4 (2009): 318–24. http://dx.doi.org/10.3846/1648-4142.2009.24.318-324.
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The article examines curves controlling asynchronous traction motors increasingly used in locomotive electric drives the main task of which is to create a tractive effort‐speed curve of an ideal locomotive Fk = f(v), including a hyperbolic area the curve of which will create conditions showing that energy created by the diesel engine of diesel locomotives (electric locomotives and in case of electric trains, electricity taken from the contact network) over the entire range of locomotive speed is turned into efficient work. Mechanical power on wheel sets is constant Pk = Fkv = const, the power of the diesel engine is fully used over the entire range of locomotive speed. Tractive effort‐speed curve Fk(v) shows the dependency of locomotive traction power Fk on movement speed v. The article presents theoretical and practical aspects relevant to creating the structure of locomotive electric drive and selecting optimal control that is especially relevant to creating the structure of locomotive electric drive using ATM (asynchronous traction motor) that gains special popularity in traction rolling stock replacing DC traction motors having low reliability. __e frequency modes of asynchronous motor speed regulation are examined. To control ATM, the authors suggest the method of vector control presenting the structural schemes of a locomotive with ATM and control algorithm.
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PROKHOR, Denis I. "Results of performance tests of an experimental class H insulation system for locomotive traction motors and its monitoring using the mobile diagnostics means." BULLETIN OF SCIENTIFIC RESEARCH RESULTS 2021, no. 4 (2021): 35–46. http://dx.doi.org/10.20295/2223-9987-2021-4-35-46.
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Objective: To perform traction electric motor performance tests with an experimental class H heat resistance insulation system. Methods: An experimental set of traction electric motors was manufactured at the Voronezh Diesel Locomotive Repair Plant to be compared with a motor of class F insulation. Results: The performance indicators of controlled locomotives have been summarized. Explanations and definition of additional insulation parameters and an example of their use in case of traction electric motor failure due to damage to controlled locomotives have been given. Practical importance: The proposed methodology for predictive diagnostics of traction electric motors performance can be used in service locomotive depots.
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Lisov, Andrey A., Alexander G. Vozmilov, Nadezhda Yu Kuleva, Andrey I. Sogrin, Ramil A. Zakirov, and Rafael Yu Ilimbetov. "Selection of a traction electric motor for arctic electric transport." Modern Transportation Systems and Technologies 9, no. 2 (2023): 44–56. http://dx.doi.org/10.17816/transsyst20239244-56.
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Aim: selection of a traction motor for electric freight transport operating in the Arctic.
 Methods: To achieve this aim, the main characteristics of existing types of DC and AC electric motors were considered, as well as data on the use of one or another type of motor in modern electric vehicle.
 Results: A comparative analysis of the most common motors has led to 2 main leaders - a permanent magnet synchronous motor (PMSM) and an induction motor (IM). Both types of motors are fully suitable for solving the aim. However, as it turned out later, PMSM is more often used for light vehicles, while IM in most cases is used for heavier vehicles.
 Conclusion: As a result of the analysis, it was decided that for electric transport operating in the Arctic, the best option is to use an induction motor as a traction motor.
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Ryzhova, Elena L., and Vladislav Yu Osipov. "The use of technical means for diagnosing traction engines rolling stock." Modern Transportation Systems and Technologies 10, no. 4 (2024): 556–76. https://doi.org/10.17816/transsyst635142.
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Aim. Demonstrate the practical significance of assessing the technical condition of traction electric locomotives during unsteady operating modes by analyzing the nature and causes of an emergency increase in the armature current of the NB–520V traction motor in traction mode. This study uses comparative analysis of trip file fragments from EP1 series electric locomotives at a locomotive depot. Methods. A review was conducted on innovative methods for studying the unsteady operating modes of traction electric motors in locomotives. These methods help determine the causes of emergency armature current increases under various operating conditions. The emergency increase in the armature current was considered in the traction mode, for which the results of the fragments of the trip files were analyzed using a microprocessor-based traction motor diagnostic system installed on an EP1 electric locomotive. Results. The proposed diagnostic methods allow for the detection of developing malfunctions early, preventing irreversible damage in traction motor operations. These methods also help plan the timing and volume of equipment repairs. The study identified the nature and causes of emergency armature current surges in the NB-520V motor during traction mode, which were linked to violations in standard operating modes of electric locomotives. A recommended procedure was developed for use in repair depots to identify and address unsteady operating modes of the traction electric motor. Conclusion. Timely and correct diagnosis of traction motors can significantly reduce downtime during unplanned repairs, avoiding unnecessary costs for motor replacements. The developed algorithm enables efficient identification of the causes of armature current surges in traction mode, using diagnostic microprocessor systems on electric locomotives. These systems help develop preventative measures, reducing motor failures on the line and train delays. In addition to the recommended procedure for detecting traction engine malfunctions, the study highlights new opportunities for creating an integrated information and measurement system for monitoring and diagnostics, based on the current technical condition of locomotive equipment.
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Kuznetsov, Valeriy, Ewa Kardas-Cinal, Piotr Gołębiowski та ін. "Method of Selecting Energy-Efficient Parameters of an Electric Asynchronous Traction Motor for Diesel Shunting Locomotives—Case Study on the Example of a Locomotive Series ChME3 (ЧMЭ3, ČME3, ČKD S200)". Energies 15, № 1 (2022): 317. http://dx.doi.org/10.3390/en15010317.
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One of the assumptions made during the modernization process of diesel shunting locomotives is the replacement of a diesel traction motor with a DC generator with an electric asynchronous traction motor. The article aimed to develop a method of selecting energy-efficient parameters of an asynchronous electric traction motor for diesel shunting locomotives, which will ensure that its operating energy efficiency will be as high as possible. The method was verified on the example of a locomotive series ChME3 (ЧMЭ3, ČME3, ČKD S200). It has been found that using a traction asynchronous electric drive on a ChME3 locomotive, its efficiency increases in comparison with DC electric motors by 3–5% under the long-term operation modes and by 7–10% during locomotive operation with traction at the adhesion limit. Using a new traction gearbox with a higher gear ratio expands the speed range in which the asynchronous traction drive operates with a high-efficiency factor. It is effective to use a traction asynchronous electric drive to modernize ChME3 diesel locomotives in case of their use under the modes requiring the implementation of maximum traction forces at low speeds. A further increase in the efficiency of the traction asynchronous electric drive is possible based on the optimal design of the wheel-motor unit and the asynchronous traction electric drive.
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Lingaitis, Leonas Povilas, and Lionginas Liudvinavičius. "ELECTRIC DRIVES OF TRACTION ROLLING STOCKS WITH AC MOTORS." TRANSPORT 21, no. 3 (2006): 223–29. http://dx.doi.org/10.3846/16484142.2006.9638070.
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The paper considers the variation of circuit design of the electric drives in traction rolling stocks when traditional DC electric machines are replaced with AC electric machines. Simplified circuit diagrams of the electric drives using electric machines of non‐commutator type are offered. Operational defects of DC traction engines are weighed against some positive characteristics of direct current series excitation in traction engines, determining their extensive use in the electric drives of traction rolling stocks. However, the rapid development of semiconductor devices, e.g. thyristors and IGBT transistors, led to the creation of a great variety of semiconductor inverters. This made it possible to develop an autonomous three‐phase power supply system for diesel locomotives and algorithms for the AC traction motors and to obtain engine characteristics matching the tractive force by using voltage frequency and current inverters. A mathematical justification of the engine torque and tractive force control as well as its particular characteristics is provided. The graphs demonstrating the particular ways of changing the electrical parameters of an asynchronous motor with a squirrel‐cage rotor are also presented.
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Danylenko, Vitalii, Viacheslav Tkachov, Andrii Kozhushko, and Oleksii Horbov. "JUSTIFICATION OF THE DESIGN CHOICE THE ELECTRIC TRACTOR POWER PLANT." Bulletin of the National Technical University «KhPI». Series: Automobile and Tractor Construction, no. 2 (December 31, 2023): 43–51. http://dx.doi.org/10.20998/2078-6840.2023.2.05.
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In the conditions of deterioration of the environment due to emissions and reduction of fossil fuel reserves in various industrial sectors, the transfer of funds to alternative clean energy is a promising way. This development encourages the modernization not only of automobiles, but also of other specialized vehicles, such as wheeled tractors. In agriculture, tractors of various traction classes are used for traction and transport work. Today, the development of electric driveconstruction technology is advisable to implement in small-class tractors, which are intended for inter-row processing of row crops, plowing light soils in gardens and greenhouses, for working with a mower, as well as for small transport works. Therefore, the material of this article aims to provide a technical justification for the choice of an electric motor and a structural scheme of a power plant when building an electric tractor of a small traction class. When solving the set goal, atechnique was used that allowed to analyze the existing electric motors used in electric drives of related industries, as well as a technical substantiation of the schematic solution of the power plant of an electric tractor was performed. The result is a justified choice of a synchronous motor with permanent magnets, a synchronous jet motor and an asynchronous motor, as those that should be implemented in an electric tractor. The practical significance of the work lies in the technicaljustification of the choice of a circuit solution for the formation of an electric power plant for low-power tractors.
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Klimov, Alexander V. "The observer of traction electromagnetic torque at the shaft of a traction electric motor." Tractors and Agricultural Machinery 90, no. 5 (2023): 423–32. http://dx.doi.org/10.17816/0321-4443-472138.
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BACKGROUND: Currently, the requirements to energy efficiency of transport vehicles are more and more tightened due to service cost reduction. Energy efficiency is the most relevant for them as it directly influences on the key feature — maximum mileage. Therefore it is necessary to control electric motors in a way to ensure maximal surface grip coefficient excluding propulsors’ slipping, as well as to establish operation modes of motors and switching between the modes to the one having the maximal efficiency. In this case, for effective control, it is necessary to define electromagnetic torque at the shaft of an electric motor and resistance torque at wheels rapidly for generating corresponding control and correcting exposures.
 AIMS: Development of the theoretical basis and the law of estimation the electromagnetic torque at the shaft of a traction electric motor of transport vehicles for the sake of efficient control of traction electric drive and its diagnostics.
 METHODS: Simulation of the observer of the electromagnetic torque at the shaft of a traction electric motor was carried out in the MATLAB/Simulink software package.
 RESULTS: The article provides with theoretical basis of formatting the law of optimal estimation of the electromagnetic torque at the shaft of a traction electric motor of transport vehicles for the sake of efficient control of traction electric drive, its diagnostics, as well as the results of simulation the law of estimation of the electromagnetic torque at the shaft of a traction electric motor obtained in the MATLAB/Simulink.
 CONCLUSIONS: Practical value of the study lies in ability of using the proposed observer for development of control system and diagnostics of transport vehicles.
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Puzakov, Andrey. "Developing the model of normal operation of starter motor traction relays." E3S Web of Conferences 124 (2019): 05039. http://dx.doi.org/10.1051/e3sconf/201912405039.
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Malfunction of motor starter traction relays cause the impossibility of the reliable start of internal combustion engines which, if the worst comes to the worst, can create the risk of traffic accident occurrence. Electric resistances of traction relay coils are structural and diagnostic parameters at the same time. Emergence and development of failures causes the change of magnetomotive force generated by the traction relay coils. Critical values of electric resistances correspond to failures of traction relay coils, i.e., inability to perform the built-in functions. The developed mathematical model of traction relay normal operation includes the amount of effort generated and voltage loss on contacts as controlled values for the drive mechanism and the starter electric motor, respectively. The results obtained contribute to the development of the method of motor-and-tractor starter diagnostics without removing it from the engine.
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Kamar, Syamsul, Meiyanne Lestari, Respatya Teguh Soewono, et al. "Performance analysis of three-phase induction motor for railway propulsion system." International Journal of Power Electronics and Drive Systems (IJPEDS) 14, no. 3 (2023): 1433. http://dx.doi.org/10.11591/ijpeds.v14.i3.pp1433-1441.
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A three-phase induction motor absorbs the most electric power among other electrical loads. Therefore, three-phase induction motors are the primary electric motors used in industrial applications thanks to their simple construction and easy operation, as well as low cost and low maintenance costs. Efficiency is a critical parameter that characterizes an induction motor as a traction motor. The traction motor is defined as the engine's effectiveness in converting electrical power at its input into mechanical energy by rotating torque on its axis. One way to analyze the efficiency is to use test data obtained from laboratory tests in case-loaded and no-load tests. Calculations using several formulas on the efficiency of an induction motor as a traction motor produce the same result, namely the efficiency of 98.6% by applying variable frequency drive (VFD). The result of laboratory tests and their analysis can be used as a reference for designing three-phase induction motors for railway traction motors, especially traction motors for high-speed trains<em>.</em>
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Syamsul, Kamar, Lestari Meiyanne, Teguh Soewono Respatya, et al. "Performance analysis of three-phase induction motor for railway propulsion system." International Journal of Power Electronics and Drive Systems 14, no. 3 (2023): 1433~1441. https://doi.org/10.11591/ijpeds.v14.i3.pp1433-1441.
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A three-phase induction motor absorbs the most electric power among other electrical loads. Therefore, three-phase induction motors are the primary electric motors used in industrial applications thanks to their simple construction and easy operation, as well as low cost and low maintenance costs. Efficiency is a critical parameter that characterizes an induction motor as a traction motor. The traction motor is defined as the engine's effectiveness in converting electrical power at its input into mechanical energy by rotating torque on its axis. One way to analyze the efficiency is to use test data obtained from laboratory tests in case-loaded and no-load tests. Calculations using several formulas on the efficiency of an induction motor as a traction motor produce the same result, namely the efficiency of 98.6% by applying variable frequency drive (VFD). The result of laboratory tests and their analysis can be used as a reference for designing three-phase induction motors for railway traction motors, especially traction motors for high-speed trains.
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Alyabiev, Alexey, Dmitriy Akinin, Aleksandr Kartashov, Valeriy Grinin, and Nikita Pikalov. "Analytical review of driving axles with integrated traction electric motors for commercial vehicles." E3S Web of Conferences 549 (2024): 07014. http://dx.doi.org/10.1051/e3sconf/202454907014.
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Trucks with electric propulsion are one direction in the development of transport vehicles. Electric propulsion trucks have different transmission schemes: a classic one including a traction motor, gearbox, driveshaft, driving axle, and a scheme where the traction motor, gearbox, motor cooling system, and axle lubrication system are directly integrated into the driving axle. The layouts of driving axles with integrated traction motors can be divided into three groups: axles with a longitudinal arrangement of the traction motor, axles with a coaxial arrangement of the traction motor and vehicle wheels, and axles with a parallel arrangement of the traction motor axis and vehicle wheels. The layout largely determines technical solutions and requirements for transmission components. The layout is determined by the level of production and set tasks, such as high standardization with the produced products, or using components from the manufacturer’s standard product range.
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Hill, R. J. "Electric railway traction. Part 1: Electric traction and DC traction motor drives." Power Engineering Journal 8, no. 1 (1994): 47–56. http://dx.doi.org/10.1049/pe:19940105.
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Nguyen Quang Thieu and V. V. Markov. "Rational control laws asynchronous electric traction." Izvestiya MGTU MAMI 5, no. 1 (2011): 70–76. http://dx.doi.org/10.17816/2074-0530-69863.
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The paper considers the optimal control laws for asynchronous traction electric motors to minimize various types of losses, minimize consumption of active and reactive power, maximum overload capacity. The authors established that the joint management of the maximum torque and minimum total losses in the motor is most efficient traction control law for asynchronous traction electric motors.
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Т., P. PAVLENKO, M. SHAVKUN V., I. SKURIKHIN V., and P. LUKASHOVA N. "METHODOLOGY OF DETERMINING THE PARAMETERS OF TRACTION ELECTRIC MOTOR FAILURES WHEN OPERATING TROLLEYBUSES." Science and Transport Progress, no. 4(76) (August 16, 2018): 47–59. https://doi.org/10.15802/stp2018/140707.
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<strong>Purpose. </strong>The work is aimed to study the change in parameters of traction electric motors of trolleybuses during operation and improvement of the technical state control system, using modern diagnostic methods. <strong>Methodology. </strong>Solution of the scientific problem is based on the control of technical state and change in the parameters of traction electric motors in the process of operation. For analysis of operational factors, we used the method of mathematical statistics and probability theory. Mathematical modelling and design of experiment, multifactor regression analysis provides an assessment of the reliability of the electric traction motor elements. Physical and statistical methods provide for research and detection of patterns of influence of the factors that accelerate the wear of parts. This allows us to generate models of system reliability that take into account the influence of operational factors on the reliability. <strong>Findings.</strong> As a result of the studies we obtained quantitative characteristics of the reliability of commutator and established that the failures of traction motors make up 20% of all failures of electrical equipment. We analysed the operation conditions of traction electric motors and determined the failure distribution law<em> N{m<sub>x</sub>,s<sub>x</sub>}</em>, which allows assessing the progression between gradual failures. We obtained a mathematical model characterizing the object operation. A generalized equation of the failure rate of elements for traction electric motor (TEM) was found. We improved the estimation methods of reliability of TEM element base that makes it possible to determine the ETM lifetime taking into account the features of each trolleybus. We established the failure rate of commutators using physical and statistical methods. <strong>Originality.</strong> For the first time, the choice of physico-statistical methods of simulation and reliability calculation was substantiated. We determined the regularities of change in parameters of the trolleybus traction electric motor elements, which makes it possible to control the processes of their wear in the operation conditions. We developed a mathematical model for estimating the traction electric motor reliability, based on a system analysis of the probabilities of failures of subsystems to be diagnosed. <strong>Practical value.</strong> Based on the results of the study, we developed practical recommendations for rational choice of diagnostic parameters of traction motors. Their implementation at the enterprises of electric transport will increase reliability of electric motors in general up to 10%. It is proposed to use the results of the work in the educational process and in the research work of students at the Department of Electric Transport of the O.M. Beketov National University of Urban Economy in Kharkiv. The developed methodology for determination of parameters of traction electric motors when operating trolleybuses allows assessing the reliability of any type of trolleybus traction motor.
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Klimov, Aleksandr V. "Synthesis of an adaptive observer of the resistance torque at a shaft of a traction electric motor." Tractors and Agricultural Machinery 90, no. 2 (2023): 99–105. http://dx.doi.org/10.17816/0321-4443-119856.
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BACKGROUND: Operating companies and consumers have demands to vehicles for efficiency improvement and cost cut. A part of substantial expenses is fuel cost, therefore use of vehicles with electric drive such as hybrid or pure electric (battery-electric) has potential for agriculture. It is mainly important for them to have the drivetrain characterized by high efficiency that increases autonomous mileage for one charge. To achieve this, it is necessary to control electric motors in the way to ensure maximal surface grip coefficient without wheel slipping. In this case, real-time defining of wheel resistance torque in necessary for efficient control.
 AIMS: Development of the theoretical basis and the law of optimal estimation of the resistance torque at a shaft of traction electric motor of transport vehicles for the sake of efficient control of traction electric drive.
 METHODS: Simulation of the law of optimal estimation of the resistance torque at a shaft of traction electric motor was carried out in the MATLAB/Simulink software package.
 RESULTS: The article provides with theoretical basis of formatting the law of optimal estimation of the resistance torque at a shaft of traction electric motor of transport vehicles for the sake of efficient control of traction electric drive, the law of optimal estimation of the resistance torque at a shaft of traction electric motor and the results of simulation of the law of optimal estimation of the resistance torque at a shaft of traction electric motor obtained in the MATLAB/Simulink.
 CONCLUSIONS: Practical value of the study lies in ability of using the proposed control laws for development of transport vehicles drivetrain control system.
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Dolgova, Anna Vladimirovna, and Pavel Konstantinovich Shkodun. "The use of fuzzy logic apparatus in development of expert systems for diagnosing traction electric motors of rolling stock." Transport of the Urals, no. 2 (2020): 65–69. http://dx.doi.org/10.20291/1815-9400-2020-2-65-69.
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The paper discusses the development of an expert system for diagnosing electric traction motors of rolling stock. The diagnostic parameters of the electric traction motor commutator-and-brush assembly, being the input linguistic variables of the fuzzy model, were selected with the use of graphoanalytic model. A fuzzy mathematical model and a fuzzy neural network for comprehensive indicator of quality of mechanical machining implementing the Takagi — Sugeno fuzzy inference algorithm were developed. The authors confirmed the practicability and the adequacy of the previously proposed comprehensive indicator of quality of mechanical machining for assessing the technical condition of the electric traction motor commutator-and-brush assembly. The studies carried out allowed creating an element of intelligent expert diagnostics system that enables a comprehensive assessment of technical condition of electric traction motor.
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Sidorov, Mikhail Yu, Aleksey G. Kalinin, Vladimir A. Bakshaev, Evgeny L. Gorshkov, and Evgeny E. Gorshkov. "TRACTION MOTOR FOR FRONT LOADER CHASSIS." Vestnik Chuvashskogo universiteta, no. 3 (September 29, 2022): 95–102. http://dx.doi.org/10.47026/1810-1909-2022-3-95-102.
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The purpose of the work is the import substitution of traction electric drives as part of the project to create in the Chuvash Republic a serial production of a family of front loaders with a hybrid electric drive.
 
 For most transport electric motors, operation in the high-torque electric motor mode is not the main operating mode, since the vehicle acceleration is carried out in a short time with overcoming low-efficiency low-speed modes. A distinctive feature of the traction motor for the chassis of a front loader is the rearrangement of priorities in favor of operating technological modes.
 
 The analytical results of the stage of the preliminary design of the traction electric motor of each wheel for a front loader with a hybrid electric transmission are presented. Based on the results of calculations, it was found that for the given traction-dynamic, temperature and overall characteristics, the most efficient type of engine is NdFeB magnet motor, the phase ratio is 6, the magnetic system is radial with magnetic supports, the non-magnetic gap is 3 mm, the shroud is based on a carbon filament, cooling is forced liquid, the highest efficiency of 92% falls on the cycle of heavy operating modes of the front loader. The cost of manufacturing a motor with an axial magnetic system is higher compared to cylindrical type motors provided the electromagnetic power is equal.
 
 The choice of a magnetic system based on the ratio of magnetic fluxes of different combinations of rotor poles and stator teeth is substantiated. The materials of the article illustrate diagrams of magnetic fields and temperature distribution of the traction motor, calculated at the stage of preliminary design by the finite element method, as well as a dimensional drawing of a sketch of an electric motor for given performance characteristics, transferred to the stage of technical design.
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Młot, Adrian, and Marian Łukaniszyn. "Analysis of axial flux motor performance for traction motor applications." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 38, no. 4 (2019): 1306–22. http://dx.doi.org/10.1108/compel-10-2018-0401.
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Purpose Analysis of test data monitored for a number of electric machines from the low volume production line can lead to useful conclusions. The purpose of this paper is to trace the machine performance to find quality-related issues and/or identify assembly process ones. In this paper, the monitoring of experimental data is related to the axial flux motor (AFM) used in hybrid electric vehicle (HEV) and in electric vehicle (EV) traction motors in the global automobile market. Design/methodology/approach Extensive data analyses raised questions like what could be the causes of possible performance deterioration of the AFM and how many electric motors may not pass requirements during operation tests. In small and medium research units of AFM for HEV or EV, engineers came across a number of serious issues that must be resolved. A number of issues can be eliminated by implementing methods for reducing the number of failing AFMs. For example, improving the motor assembly precision leads to reduction of the machine parameters deterioration. Findings Assembly tolerances on electric motor characteristics should be investigated during motor design. The presented measurements can be usable and can point out the weakest parts of the motor that can be a reason for the reduced efficiency and/or lifetime of the AFM. Additionally, the paper is addressed to electric motor engineers designing and/or investigating electric AFMs. Originality/value Performance of AFM was monitored for a number of identical motors from low volume production line. All tested motors were operated continuously for a long period of time and the tests were repeated every few weeks for half a year to check the reliability of motor design and indicate how much the motor parameters may change. The final results point how many motors fail the requirements of motor performance. A few batches of AFM were selected for testing. Each batch represents a different size (nominal power) of the same type of AFM.
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Mihal'chuk, Nikolay, Yuriy Popov, Anatoliy Savos'kin, Oleg Pudovikov, and Anton Chuchin. "Improving the Efficiency of the Electric Locomotive Drive with a Controllable Converter for Traction Motor Excitation." Bulletin of scientific research results 2023, no. 2 (2023): 81–91. http://dx.doi.org/10.20295/2223-9987-2023-2-104-114.
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Purpose: To substantiate the circuit design and algorithms for individual smooth and automatic control of single-phase direct current electric locomotives according to the laws of constant traction force and constant power without breaking the electric locomotive power circuits in order to increase the efficiency of its electric drive with controllable traction motor excitation converters. As a circuit design solution, it is proposed to apply a power electrical circuit with two rectifier-inverter converters for each section of the electric locomotive for bogie-based traction control, as well as individually controlled bridge transistor converters, shunting field windings, for axial traction control within each bogie. Methods: The development of circuit solutions using modern power semiconductor converters; theory of automatic control and design of finite state machines; mathematical modeling of electromagnetic, electromechanical and mechanical processes. Results: The developed control algorithms provide the possibility of obtaining traction characteristics of an electric locomotive that vary according to the laws of constancy of traction force or constancy of power, bringing the traction characteristics of electric locomotives with collector traction motors to the characteristics of electric locomotives with asynchronous traction motors. The calculations performed confirmed the possibility of implementing an algorithm for individual control of traction motor currents and their excitation currents, as well as traction forces, which ensures a smooth increase in the traction force of an electric locomotive.Practical significance: The developed technical solutions applicable in the manufacture of modern and modernization of operated electric locomotives will ensure an increase in the traction properties of singlephase DC electric locomotives and will contribute to an increase in the throughput and carrying capacity of the railway network.
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Viktor, Kharchenko, Kostenko Ivan, Liubarskyi Borys, Shaida Viktor, Kuravskyi Maksym, and Petrenko Оleksandr. "SIMULATING THE TRACTION ELECTRIC DRIVE OPERATION OF A TROLLEYBUS EQUIPPED WITH MIXED EXCITATION MOTORS AND A DC-DC CONVERTER." Eastern-European Journal of Enterprise Technologies 3, no. 9 (105) (2020): 46–54. https://doi.org/10.15587/1729-4061.2020.205288.
Full textAbstract:
Switching to the new type of a traction drive, from direct to alternating current, cannot be performed instantly in public transportation. The reason is the large fleet of vehicles and associated costs. In most countries in Europe and Asia, this process takes years. Therefore, the fleet of trolleybuses develops in two directions simultaneously. The first is the purchase of new trolleybuses, that is, the renewal of fleet with modern machines with an alternating current traction motor. The second is the overhaul and modernization of "outdated" machines, in order to improve their performance. Most "obsolete" trolleybuses are equipped with direct current traction motors of serial or mixed excitation. It is possible to achieve substantial energy savings and to improve the characteristics of the traction electric drive with such engines by using a pulse control system and by optimizing control algorithms. The goal of this study is to increase energy efficiency and to improve the characteristics of the trolleybus traction electric drive, equipped with a direct current motor of mixed excitation. This is accomplished by improving this drive's control system based on the pulse control system via DC-DC. The feasibility of the tractive electric drive has been tested through imitation and physical modeling. A mathematical model of the DC motor with mixed excitation has also been improved. A special feature of this model is taking into consideration the saturation of the elements of a magnetic wire of the traction motor based on the preliminary performed calculations of a magnetic field using a finite element method. By combining these components, the improved mathematical model of the entire trolleybus electric drive has been built. The operation of the trolleybus electric drive under a start mode has been simulated. The results have confirmed the increase in the energy efficiency of the traction electric drive by reducing the loss for excitation. The comparison has proven that the losses of energy decreased from 0.587 MJ (0.163 kWh) to 0.531 (0.1475 kWh) MJ, by 9.54 %
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DOROFEEV, O. V., V. I. VOROBYEV, M. I. BORZENKOV, O. V. IZMEROV, and S. N. ZLOBIN. "TRACTION DRIVE OF LOCOMOTIVES WITH HIGH MOMENTUM COLLECTOR TRACTION ELECTRIC MOTOR." Fundamental and Applied Problems of Engineering and Technology 2 (2021): 118–29. http://dx.doi.org/10.33979/2073-7408-2021-346-2-118-129.
Full textAbstract:
The issues of development of traction drives of locomotives are considered. It was found that with the existing limitations of the traction force and the speed of continuous operation, asynchronous traction motors do not have clear advantages over collector motors. The possibility of creating collector motors for electric locomotives with a power equal to the used asynchronous ones has been proved, new technical solutions have been proposed for units that ensure the reliability of the latter when using high-torque motors (elastic gearwheel with chevron teeth, two-layer rubber-metal hinge, rubber-cord clutch options), as an optimal solution for the drive with collector motors, it is proposed to use a drive with a support frame motor and an axial gearbox. The directions of research necessary for the practical implementation of drives with a high-torque traction motor are determined, it is proposed to conduct research on the feasibility of creating diesel locomotives with bogies, unified with electric locomotives. The proposed solutions received two patents for inventions, eight patents for utility models, two patent applications were filed.
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Sierikov, Georgy, and Iryna Sierikova. "Analysis of lithium-ion thermostabilization systems traction batteries of electric vehicles." Bulletin of Kharkov National Automobile and Highway University, no. 96 (May 24, 2022): 151. http://dx.doi.org/10.30977/bul.2219-5548.2022.96.0.151.
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Problem. The paper solves an important scientific and practical problem that allows to increase the competitive advantages of agricultural producers through the use of modern energy-efficient tractors with electric transmission. The control system of the traction electric drive is a component of the modern electric tractor of the fourth traction class which has become the most widespread and is intended for providing movement in the modes of various loading. The study of electric motors of a modern electric tractor of the fourth traction class is carried out. The electric motor is characterized by input and output parameters, internal parameters or state parameters, external influences. Methodology. The methods of theoretical basic electrical engineering have been developed in the production and calculation of circuits. Also classical methods of statistics of signals from ADC are used. Results. The technique of processing information from the current, voltage and temperature sensors using a mathematical apparatus without using harmonic analysis is presented. The hardware implementation of the proposed method allows the use of simplified computing tools. Originality. Complex analysis of the data obtained from the current, voltage and temperature sensors is carried out. During the analysis, the range of velocities with stable operation of the measurement system was determined. Based on the data obtained, it is concluded that the use of a horn antenna as a concentrator substantially eliminates lateral interference and extends the range of possible velocity measurements. It is shown that the level of sampling significantly affects the upper limit of the measurement speed. Practical value. It is shown that: As a result of the work, an important scientific and practical problem was solved, which allows to increase the energy efficiency of tractors through the use of tractors of the fourth traction class electric drive. To maintain the maximum energy efficiency of the traction electric drive of the tractor in the modes of various loads, its control system must include means of displaying the current state of the energy parameters of the power plant. The electrical equipment must include an on-board computer, which helps the driver to make the optimal tasks of work, according to preliminary calculations, as well as display the information needed on the route, the state of the vehicle, means of communication. communication of the car with the external environment, with the navigation system, etc. The on-board computer provides information to the touch screen with programmable virtual controls, and communicates with the driver's mobile systems. The study of electric motors of a fifth traction class electric tractor was carried out. As an object of motor control, it is characterized by input and output parameters, internal parameters or state parameters, external influences. An algorithm for selecting the parameters of the traction motor system has been developed and a circuit implementation of the control system has been offered.
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Zuev, A. S., and M. D. Glushchenko. "Study of an Asynchronous Traction Motor with Inclined Slot Rotor." World of Transport and Transportation 21, no. 6 (2024): 60–64. http://dx.doi.org/10.30932/1992-3252-2023-21-6-7.
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Modernisation of railway rolling stock which is quite relevant from the perspective of growing performance of railways can be achieved among other ways through improvement of features of traction drive, namely of traction electric motors, that defined the objective of the study. The inclined shape of the rotor slots is characteristic of a proposed design of asynchronous traction electric motor with a squirrel-cage rotor winding for a passenger electric locomotive which features are subject to the analysis. The results of experimental and computer modelling confirmed the positive effect of using a rotor with inclined slots in the design of an asynchronous traction motor, which consists in reducing the current in the windings and reducing motor power losses. The obtained results of improving the technical features of an asynchronous traction motor due to the use of a rotor with inclined slots in its design allow expand recommendation for its use on locomotives.
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Kosmodamianskiy, Andrey Sergeevich, Vladimir Ivanovich Vorobyev, Oleg Vasilyevich Izmerov, and Dmitriy Nikolaevich Shevchenko. "Modernization of wheels and motors units for diesel locomotives in conditions of import substitution." Transport of the Urals, no. 3 (2022): 40–48. http://dx.doi.org/10.20291/1815-9400-2022-3-40-48.
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The paper considers problems of import substitution of parts for wheels and motors units for freight and shunting diesel locomotives with 1050 and 1250 mm wheels and it also considers a task of modernization of technically outdated assemblies. In result of the analysis the authors revealed that it is necessary to: 1) develop a new assembly of motor support bearings with the use of domestic parts; 2) create a new design of an electric traction motor suspension for the substitution of a spring suspension that has wearable parts; 3) organize a search for solutions for perspective diesel locomotives that are intended to operate on the Eastern polygon. For diesel locomotives with 1050 mm wheels the authors propose designs of a frame support traction drive equipped with flat rubber-metal elements and a traction drive with rigid support of an electric traction motor on wheel centres by the use of domestic bearings. Instead of the spring suspension the authors recommend to use suspensions with flat rubber elements and spherical rubber-metal mounting, which will provide interoperability of bogies with modified and unmodified electric traction motors. For perspective diesel locomotives with 1250 mm wheels the authors propose designs of two-axle bogies equipped with high-torque commutator motors and a traction drive with a frame support suspension of a traction motor and an axial gearbox.
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Proshutinsky, Roman, and Oleg Kolodkin. "Computer aided design of electromechanical transducer of gated traction motor by using modern software." Bulletin of scientific research results, no. 1 (March 20, 2016): 72–79. http://dx.doi.org/10.20295/2223-9987-2016-1-72-79.
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Objective: To develop a system of computer aided design for electrical traction drive complex, as a component of CAD for electric rolling stock. Modern approach for electrical traction drive complex design means the development of assembly of interconnected systems, such as electrical traction motor, transducer, control system, etc. The most striking instance of such an assembly is gated traction motor, that is somehow in-between electric machines and electric drives. It is usefull to start the developing of CAD gated traction motor by developing the CAD system for electromechanical transducer of gated traction motor. Methods: In the base of CAD system under development there is a technology of design of electromechanical transducer of gated traction motor. At the stage of electromechanical transducer magnetic circuit calculation the software for simulation of magnetic fields by finite elements method was used. Results: The paper suggests the structure diagram of CAD system for electromechanical transducer of gated traction motor. Calculating software language is Octave. The paper provides the results of magnetic field calculations for electromechanical transducer of gated traction motor FEMM software for finite-element simulation. Based on the results of magnetic field calculations the curve of electromechanical transducer energizing is plot. Also the practicability of FEMM software implementation at the design stage of magnetic circuit is confirmed. Practical importance: Obtained results are useful for creation of educational and research system for CAD for electric traction drive complex. Development of CAD system for gated traction motor will allow to master methods and approaches of design for electric machines and semiconductor complexes of electric traction drives in general.
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Kim, Chan-Ho, Sung-Bae Jun, Han-Joon Yoon, et al. "Calculation of Parasitic Capacitance to Analyze Shaft Voltage of Electric Motor with Direct-Oil-Cooling System." Processes 10, no. 8 (2022): 1541. http://dx.doi.org/10.3390/pr10081541.
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In modern electric vehicles, electrical failure has become a critical problem that reduces the lifetime of traction motors. Moreover, traction motors with high-voltage and high-speed systems for a high power density have been aggravating the shaft voltage problems. This study identifies that direct-oil-cooling systems exacerbate this problem. To address this, an analytical method for calculating parasitic capacitance is proposed to determine the effects of cooling oil in a traction motor with a direct-oil-cooling system. Capacitance equivalent circuits are configured based on whether the slot is submerged in the cooling oil. In addition, an electric field decomposition method is applied to analyze the distortion of the electric field by the structure of the conduction parts in the motor. The results indicate that the parasitic capacitances of the traction motor are increased by the influence of the cooling oil resulting in an increase in the shaft voltage.
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V. M., Tretyak, Govorov O. F., Matskevich Yu. M., and Oliadnichuk R. V. "Problems of power division between the devices of agricultural machine-tractor units." Mehanization and electrification of agricultural, no. 15(114) (2022): 115–23. http://dx.doi.org/10.37204/0131-2189-2022-15-14.
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Purpose. Determination of the rational use of various types of transmissions in the creation of multi-moving agricultural machine-tractor units. Methods. Analysis of technical characteristics of sources of mechanical energy, synthesis of power distribution system using motor-wheels. Results. Based on the analysis of literary sources, proposals were received for the choice of transmissions for multi-moving agricultural machine-tractor units. A kinematic synthesis of an electromechanical transmission for individual propellers for various purposes is proposed. Conclusions 1. The maximum transport speed of modern agricultural tractors is in the range of 40 ÷ 50 km/h, and the minimum technological speed at the maximum power of the traction vehicle (TV) can be within 4 ÷ 5 km/h when working with a soil loosener. 2. Modern agricultural TV should have a ratio of maximum speed to minimum speed up to 10. 3. The nominal range of rotation frequencies of traction electric motors available on the market is not able to overlap the ratio more than 2 ÷ 2.5. 4. The kinematic combination of the rotation frequencies of two electric motors allows you to cover the range of operating speeds of the MTA without mechanical switching of the transmission elements. 5. The proposed autonomous motor-transmission unit allows to compose MTA with the distribution of electrical power between additional engines of technological modules of MTA. Keywords: machine-tractor unit, transmission, traction concept, mover, electric wheel motor.
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Gronwald, Peer-Ole, and Thorsten Alexander Kern. "Experimental Validation and Parameter Study of a 2D Geometry-Based, Flexible Designed Thermal Motor Model for Different Cooled Traction Motor Drives." World Electric Vehicle Journal 12, no. 2 (2021): 76. http://dx.doi.org/10.3390/wevj12020076.
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For identifying new improvement potentials for electric traction motors, accurate models are needed. In this paper, a geometry-based 2D lumped parameter thermal network model for different electric traction motor and cooling concepts is studied and validated. In the second section, the design and functionality of the thermal model is explained. In the third section, the best fit of the literature correlations for describing the different heat transfer mechanisms was identified and a parameter study of the heat transfer coefficients was carried out and discussed. In the last section, the model is validated with measurement results from six different electric traction motors and drives units. For validation measurement results of stationary operating points, peak operating points and drive cycles are used. Based on the validation results, a model error of less than 10% is achieved for the most motor components in the different cooling concepts and traction motor designs. Inaccuracies and deviations are discussed and suggestions for improvement are made.
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Dubravin, Yuriy, Yaroslav Shostak, Vitaly Bakhonya, and Viktor Tkachenko. "Justification of choice of methods for diagnostics of insulation condition of electrical machines of electric railway stock." Collection of scientific works of the State University of Infrastructure and Technologies series "Transport Systems and Technologies", no. 43 (June 18, 2024): 76–89. http://dx.doi.org/10.32703/2617-9059-2024-43-6.
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The object of the study is the process of monitoring the technical condition of electrical insulation of traction electric machines in order to determine the need for their maintenance or repair. Diagnostics of electric machines is an important aspect of supporting the operation of electric drives. Failure of the windings is one of the main reasons for failure of electric motors. Therefore, the task of developing operational methods for diagnosing the insulation of windings of traction electric motors is urgent. A study of the negative impact of operating conditions on the technical condition of electrical insulation of motors was carried out. The analysis of the existing methods of diagnosis of insulation systems of electric machines was carried out. Special attention was paid to the selection of predictive parameters of the insulation state. A mathematical model was developed to study the frequency characteristics of the stator insulation system of the traction electric motor model AD914. Refined dependences of the effect of changes in the insulation parameters of the motor stator winding on its frequency characteristics were obtained. It was concluded that the method of monitoring the insulation state of electric motor windings based on the assessment of electrical resistance relative to the stator core and amplitude-frequency characteristics is the most effective. The field of practical application of the obtained results is the system for monitoring the condition of electrical insulation of traction electric machines to determine the schedule of their maintenance and repair. The conducted research is a scientific justification for the choice of methods and devices for diagnosing the insulation state of electric motors of railway traction rolling stock.
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Shantarenko, Sergei, Evgeny Ponomarev, and Anatoly Borodin. "Contact interaction “brush – collector” and working efficiency of locomotive traction electric motor." MATEC Web of Conferences 239 (2018): 01037. http://dx.doi.org/10.1051/matecconf/201823901037.
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The working efficiency of locomotive traction electric motors of direct current is largely determined by the reliability of the collector-brush assembly. The paper presents the results of simulation of the contact interaction “brush-collector” in the traction electric motor of an electric locomotive. The influence of the structural features of the brush holder, the conditions and operating modes on the contact area “brush-collector”, and the quality of switching is considered. Technical solutions for improving the current collection quality in the contact “brush-collector” and ensuring the working efficiency of traction electric motors of locomotives are proposed.
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Goolak, Sergey, Viktor Tkachenko, Svitlana Sapronova, et al. "Synthesis of the Current Controller of the Vector Control System for Asynchronous Traction Drive of Electric Locomotives." Energies 15, no. 7 (2022): 2374. http://dx.doi.org/10.3390/en15072374.
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This paper deals with the analysis of the operating conditions of traction drives of the electric locomotives with asynchronous traction motors. The process of change of the catenary system voltage was found to have a stochastic character. The method of current controller synthesis based on the Wiener–Hopf equation was proposed to enable efficient performance of the traction drive control system under the condition of the stochastic nature of the catenary system voltage and the presence of interferences, when measuring the stator current values of the tractor motor. Performance simulation of the proposed current controller and the current controller used in the existing vector control systems of the traction drives used in the electric locomotives was implemented. The results of the performance simulation of the proposed current controller were compared with the performance of the current controller in existing vector control systems of the traction drives. The results are applicable to the design of vector control systems of traction drives in electric locomotives and to the study of the influence of performance of electric traction drives in electric locomotives on the quality indicators of the power supplied by the traction power supply system under the actual operating conditions of the locomotive.
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El Hadraoui, Hicham, Mourad Zegrari, Ahmed Chebak, Oussama Laayati, and Nasr Guennouni. "A Multi-Criteria Analysis and Trends of Electric Motors for Electric Vehicles." World Electric Vehicle Journal 13, no. 4 (2022): 65. http://dx.doi.org/10.3390/wevj13040065.
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The interest in electric traction has reached a very high level in recent decades; there is no doubt that electric vehicles have become among the main means of transport and will be the first choice in the future, but to dominate the market, a lot of research efforts are still devoted to this purpose. Electric machines are crucial components of electric vehicle powertrains. The bulk of traction drive systems have converged in recent years toward having some sort of permanent magnet machines because there is a growing trend toward enhancing the power density and efficiency of traction machines, resulting in unique designs and refinements to fundamental machine topologies, as well as the introduction of new machine classes. This paper presents the technological aspect of the different components of the electric powertrain and highlights the important information on the electric vehicle’s architecture. It focuses on a multi-criteria comparison of different electric motors utilized in the electric traction system to give a clear vision to allow choosing the adequate electrical motor for the desired application. The proposed comparative analysis shows that the induction motor better meets the major necessities of the electric powertrain, whereas the permanent magnet synchronous motor is nonetheless the most used by electric vehicle manufacturers.
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Liu, Jianhua, Rui Nie, and Zheshu Li. "Multimotors Coordination Control Method for Consistent Total Traction Torque of Electric Locomotives." Journal of Advanced Transportation 2020 (September 1, 2020): 1–11. http://dx.doi.org/10.1155/2020/2092463.
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Multimotors traction is a common driving mode for electric locomotives. The complexity and variability of the operating environment often cause difficulties for one or some traction motors to output the distributed traction torque, which requires the redistribution of the torque output of multimotors to maintain the total traction torque of all motors at a given constant. To this end, a multimotors coordination control method was proposed for consistent total traction torque of electric locomotives. Through this approach, a traction torque-coordinated control structure was constructed on the basis of energy minimisation with an optimal dynamic adjustment mode. The sliding mode tracking control was developed for each independent motor to improve its dynamic response performance. A simulation verification of motors fault types in two different cases was conducted. The results showed that the proposed method could track the total traction torque in a short time, and the system fluctuations in independent motor coordination process were very small.
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Anusha, Poodipeddi, Tayi Srikanth, Manne Nirmal Devi Kiran, and Palivela Rambabu. "Fabrication and Simulation of an E-Vehicle." E3S Web of Conferences 552 (2024): 01021. http://dx.doi.org/10.1051/e3sconf/202455201021.
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An electric vehicle is one that is powered by on-board electric sources and is driven by electric motors. Electric vehicles have emerged only because of the rise in cost of fuels and pollution. As they are ecologically sound, they are referred to as green transportation. The electric motor based was selected based on its rating of energy efficient. The rated values of the vehicle dynamics include on various parameters e.g motor output, power, traction-torque and speed. The motor rating is adjusted according to the carrying load, so as to achieve the characteristics of traction. The IC engine of the traditional vehicles is replaced by the electric motor which would act as the leading prime mover component used to drive the E-vehicle. Thus, the selected electric motor provides an adequate power for traction purpose. The structural optimization of the vehicle in-terms of deflection, proof-resilience and Von-misses stress analysis has been carried out using FEA software. EVs are gaining popularity due to their low emissions, reduced operating costs and advances in battery technology, which have increased their range and performance.
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Bizhaev, A. V. "Research of Tractor Power Unit with Electric Drive Parameters." Agricultural Machinery and Technologies 14, no. 4 (2020): 33–42. http://dx.doi.org/10.22314/2073-7599-2020-14-4-33-42.
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The author showed that it was possible to reduce the exhaust gases toxicity and increase tractors effi ciency using an electric power unit to implement traction. The effi ciency of modern electric motors was at its peak of 96 percent, compared to 45 for a diesel engine. He emphasized that this parameter for modern sources of electrical energy was 85-90 percent, which opened up opportunities for the implementation of an electric tractor.(Research purpose) To present the general concept of an electric drive power unit for a tractor of a small traction class and to evaluate its parameters as a fi rst approximation.(Materials and methods) For the tractor’s electric drive lithium-ion batteries were chosen as a source of electrical energy, showing the best characteristics of energy intensity – 432-864 kilojoule per kilogram with a unit cost of 4200-17400 rubles per kilogram. During the analyses of the power unit drive types, a D-120 diesel engine with a power of 20 kilowatt, a DC electric motor and an asynchronous motor with similar parameters were studied. The VTZ-2032 tractor with a nominal tractive eff ort of 600 Newtons when working on stubble was taken as the basis for the calculation.(Results and discussion) The author determined the best indicators of the electric drive by the power characteristics fullness in the gears with a decrease in unit costs per kWh from 24 to 15-16 rubles.(Conclusions) The most effi cient engine was determined – a brushless DC electric motor. The author calculated that the specifi c cost of its energy was 1.5-1.8 times less than that of a diesel engine, and amounted to 15-27 rubles per kilowatt-hour with a maximum effi ciency of 95 percent. It was found that lithium-ion batteries would be the optimal solution for powering the electric drive. They were distinguished by a high specifi c energy consumption – 432-864 kilojoule per kilogram – and a low price per energy unit, amounting to 5-45 rubles per kilojoule.
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Tong, Yikun, Junjiang Zhang, Liyou Xu, and Xianghai Yan. "Driving System Design and Power Source Parameter Optimization of Tractor with Dual-Motor Coupling Drive." World Electric Vehicle Journal 14, no. 3 (2023): 63. http://dx.doi.org/10.3390/wevj14030063.
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For the poor working conditions of tractors, single-motor drive tractors usually choose a motor with large parameters, which leads to the lower efficiency of the motor under low-load conditions. Taking a wheeled tractor of YTO as the research object, a driving scheme of a dual-motor electric tractor was proposed, and the main components of the tractor electric drive system were matched. Based on MATLAB/Simulink, the electric tractor drive system model was established. On the premise of meeting the dynamic needs of the tractor, an optimization model was established with the tractor power consumption as the optimization goal and the power distribution coefficient of dual motors as the decision variable. The optimization model was solved by a genetic algorithm. The driving characteristics of the optimized electric tractor and the original tractor, as well as the instantaneous power consumption and total power consumption of the tractor before and after optimization, are compared and analyzed. The results show that the traction efficiency of the optimized electric tractor is about 2.7% higher than that of the original tractor, and the total power consumption of the electric tractor before and after optimization is reduced by 8.2%. The power performance and economy of the tractor after parameter matching and optimization are significantly improved.
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Liu, Mengnan, Liyou Xu, and Zhili Zhou. "Design of a Load Torque Based Control Strategy for Improving Electric Tractor Motor Energy Conversion Efficiency." Mathematical Problems in Engineering 2016 (2016): 1–14. http://dx.doi.org/10.1155/2016/2548967.
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In order to improve the electrical conversion efficiency of an electric tractor motor, a load torque based control strategy (LTCS) is designed in this paper by using a particle swarm optimization algorithm (PSO). By mathematically modeling electric-mechanical performance and theoretical energy waste of the electric motor, as well as the transmission characteristics of the drivetrain, the objective function, control relationship, and analytical platform are established. Torque and rotation speed of the motor’s output shaft are defined as manipulated variables. LTCS searches the working points corresponding to the best energy conversion efficiency via PSO to control the running status of the electric motor and uses logic and fuzzy rules to fit the search initialization for load torque fluctuation. After using different plowing forces to imitate all the common tillage forces, the simulation of traction experiment is conducted, which proves that LTCS can make the tractor use electrical power efficiently and maintain agricultural applicability on farmland conditions. It provides a novel method of fabricating a more efficient electric motor used in the traction of an off-road vehicle.
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Goolak, Sergey, Viktor Tkachenko, Pavol Šťastniak, Svitlana Sapronova, and Borys Liubarskyi. "Analysis of Control Methods for the Traction Drive of an Alternating Current Electric Locomotive." Symmetry 14, no. 1 (2022): 150. http://dx.doi.org/10.3390/sym14010150.
Full textAbstract:
The analysis of operating conditions of traction drives of electric locomotives with asynchronous traction motors has been carried out. It was found that during operation in the output converter of an asynchronous motor, defects may occur, which leads to asymmetric modes of its operation. Models of a traction drive of an electric locomotive with asynchronous motors with scalar and vector control of the output converter are proposed, taking into account asymmetric operating modes. As a result of the simulation, the starting characteristics of the traction drive were obtained for various control methods both in normal and emergency modes of the drive. For the drive-in emergency mode, the following cases were investigated: the balance of the converter output voltages and the turn-to-turn circuit of 10% of phase A winding of the motor stator; imbalance of the output voltages of the inverter and an intact motor; imbalance of the output voltages of the converter and interturn short circuit of 10% of phase A winding of the motor stator. Comparison of the simulation results have shown that in emergency modes in the traction drive, the torque ripple on the motor shaft in the drive with vector control is 13% less, and in scalar control, the phase current unbalance coefficient is 22% less. The results of this work can be used to study the influence of the output converter control methods on the energy efficiency indicators of the traction drive of an AC electric locomotive.
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Khandekar, Mr Nagnath V., Mr Sohel Tayyab Deshmukh, Mr Ganesh Savata Gaikwad, Mr Manojkumar Balaso Lokare, and Mr Shubham Chandrakant Lokare. "Prototype Model of Electric Locomotive Traction System." International Journal for Research in Applied Science and Engineering Technology 12, no. 5 (2024): 41–44. http://dx.doi.org/10.22214/ijraset.2024.61336.
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Abstract: Electrical locomotive is driven by DC series motor of 12V. The torque produced by motors is used to move the locomotive. The main supply to the motor is given through pantographs. The total length of path is 6 feet approximately. The other main equipment are rectifiers, Step-down transformer. Rectifier is used for conversion of alternating current to direct current, Step-down transformers used for convert high voltage power to a low voltage The railway is one of the largest and oldest methods of the transportation in our country serving many people in many ways. The major problem in railways is derailing and obstruction to the locomotive in different ways. Traction is basically two types, electrical traction and nonelectric traction. Electric traction is most advantageous and economical with less maintenance when compared to other.
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Karasoy, Sertaç, Mustafa Burak Can, Fatma Öz, and Ferhan Fıçıcı. "Electric Motor Selection Criteria for Traction System in Construction Machines." Orclever Proceedings of Research and Development 4, no. 1 (2024): 123–46. http://dx.doi.org/10.56038/oprd.v4i1.471.
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Recent developments in electric motors in construction machinery and the automotive sector's trend towards electric traction in recent years are among the factors triggering and influencing the shift towards electric traction in construction machinery. There is no doubt that electric construction machinery will be the first choice for urban operations in the future, but many research and development efforts are still ongoing to dominate the market. Electric motors are the most important components of power transmission systems in electric machines. The trend towards increasing power density and efficiency in power transmission systems contributes to different designs and improvements in basic electric motor topologies. This article provides an insight into the selection of electric motors to be used in power transmission components of electric construction machinery and allows for the comparison of different electric motors.
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Voytenko, V.A., V.A. Vodichev, and A.G. Kalinin. "Analysis of Technical and Energy Indicators of a Multi-Motor Electric Drive for Urban Public Transport." Problemele Energeticii Regionale 1-2 (41) (June 5, 2019): 95–106. https://doi.org/10.5281/zenodo.3239179.
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The aim of this article was to analyze the profitability of using a multi-motor electric drive instead of a single-motor electric drive in a city vehicle to ensure the reduction of the electrical energy losses. To achieve the goal a mathematical model was used to calculate the energy losses in the singlemotor and multi-motor electric drives of a bus with a different number of traction induction motors. The calculation was carried out for the steady-state driving modes with different speeds and transient acceleration modes. The change in the load torque of the vehicle's motors due to the change in the rolling friction force of the wheels with a different number of passengers carried was taken into account. The novelty of the work is that the use of a multi-motor electric drive shown for the first time allowed the reduction in the energy losses in the traction induction electric motors when the vehicle is moving at a constant speed and during acceleration with a different number of passengers carried. Moreover, to obtain energy saving, the number of motors used in a multi-motor electric drive should vary depending on the speed and acceleration, as well as on the total load torque of the multi-motor drive. The formula was obtained analytically for the calculation of the number of motors of a multi-motor electric drive, which would ensure energy saving compared to a single-motor electric vehicle.
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Bodnar, Boris, Oleksandr Ochkаsov, Tetiana Hryshechkina, and Viačeslav Petrenko. "A case study of the use of statistical processing of the armature rotation irregularities for the diagnostics of locomotive traction electric motors." Transport 40, no. 1 (2025): 24–34. https://doi.org/10.3846/transport.2025.23229.
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Locomotive Traction Electric Motors (TEMs) generate power to rotate the wheelsets of diesel or electric locomotives, electric or diesel multiple units. TEMs are the most critical parts of traction rolling stock on which exploitation costs, reliability and train traffic safety depend. The purpose of the article is to evaluate the possibility of diagnostics the technical condition of the TEM using the rotation irregularities of the armature shaft in the electric motor as a diagnostic parameter. The article analyses the main causes of TEM failures and methods for diagnosing electric motors in operation. The expediency of using the rotation irregularities of the armature shaft in the electric motor as a diagnostic parameter is substantiated. The structural flowchart of the device for measuring the rotation irregularities of the armature is presented. Diagnosing the mechanical part of an electric motor is chosen as an implementation example. The authors confirmed the connection between the technical condition of the electric motor and the statistical indicators calculated for the signal of the rotation irregularities of the armature shaft.
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Riabov, I., S. Sapronova, V. Tkachenko, S. Goolak, and R. Keršys. "CALCULATION OF TRACTION AND ENERGY CHARACTERISTICS ELECTRIC ROLLING STOCK WITH ASYNCHRONOUS TRACTION ELECTRIC DRIVE." Collection of scientific works of the State University of Infrastructure and Technologies series "Transport Systems and Technologies" 1, no. 38 (2021): 141–52. http://dx.doi.org/10.32703/2617-9040-2021-38-138-13.
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The issue of determining the traction and energy characteristics of electric rolling stock with asynchronous traction drive is considered. It is noted that such rolling stock can work at any point of the traction area, resulting in the need to determine the characteristics of the rolling stock for the entire traction area. The calculation of the characteristics of the traction induction motor, which are the basis for determining the traction and energy characteristics of the electric rolling stock, is considered in detail. A procedure based on the calculation of the replacement circuit of an induction motor is proposed. The calculation of power losses due to higher harmonic voltages and currents is considered. An example of calculation of traction and energy characteristics of an DC electric shunting locomotive with a traction asynchronous electric drive is given.
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Roi, S. V., A. V. Kachan, A. S. Tykhonov, D. I. Iakunin, and Ye S. Riabov. "Application of electric traction drive for the modernization of locomotives with hydraulic power transmission." Reporter of the Priazovskyi State Technical University. Section: Technical sciences, no. 46 (June 29, 2023): 93–102. http://dx.doi.org/10.31498/2225-6733.46.2023.288177.
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The issue of updating the locomotive fleet of industrial enterprises by modernizing outdated diesel locomotives with hydraulic power transmission was considered. The analysis of existing modernizations shows the possibility of using traction electric drive while preserving the original group drive of wheel pairs. This approach is used by manufacturers when updating outdated and creating new diesel locomotives and traction modules for rolling stock. A possible option is the use of single-motor carts. Previous studies on the choice of the type of wheel pairs drive were analyzed and it was established that the use of a group drive of wheel pairs provides the possibility of realizing high traction forces without additional devices, and the drive itself has a lower cost. This determines the expediency of using a group drive of wheel pairs when modernizing diesel locomotives with hydraulic power transmission. To realize these advantages, it is necessary to use a traction electric drive based on electromechanical alternating current converters. This approach was implemented by Mykolaiv Locomotive Repair Plant LLC during the modernization of TGM6 diesel locomotives. The diesel locomotive is intended for shunting and hauling operations, as a result of which it was assumed during the design that the traction force when moving is equal to 320 kN, the continuous traction force is 300 kN, and the maximum speed is 50 km/h. The power plant consists of a modern Cummins diesel engine and a synchronous generator. A frequency-controlled asynchronous traction electric motor is used to drive the wheel pairs. Power and control of the electric motor is carried out using a voltage inverter. Diesel locomotives use a controlled electric drive of cooling motor-fans, and semiconductor converters are used to power auxiliary systems. The locomotive and its systems are controlled by a microprocessor control system. The application of the traction electric drive based on the asynchronous electric motor provided the estimated efficiency of the diesel locomotive and the efficiency of the diesel power at the nominal power and the estimated speed of the long-term mode, equal to 6 km/h, are 0.312 relative units and 0.69 relative units, respectively. The analysis of ways to improve the traction electric drive to reduce the consumption of fuel and energy resources was carried out. It was determined that the use of a power plant with energy storage and the use of two traction electric motors for the group drive of wheel pairs may be expedient