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1
Iksar, Elena, Nodira Akhmedova, Nafisa Yuldasheva, Sayfulla Kayumov, and Mutabar Agzamova. "Computational methods for studying the thermal state of frequency-controlled asynchronous traction motors." E3S Web of Conferences 383 (2023): 04030. http://dx.doi.org/10.1051/e3sconf/202338304030.
Повний текст джерелаАнотація:
The article discusses methods for calculating the thermal state of a frequency-controlled asynchronous traction motor, and provides calculations of the thermal state of an asynchronous motor powered by a semiconductor frequency converter with an autonomous inverter. Methods for assessing the thermal state of traction asynchronous electric motors of locomotives under various operating modes are considered. Computational methods for assessing the thermal state of asynchronous motor units allow you to continuously monitor the thermal state of an asynchronous traction motor and prevent possible emergencies in a timely manner.
2
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.
Повний текст джерелаАнотація:
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.
3
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.
Повний текст джерелаАнотація:
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.
4
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.
Повний текст джерелаАнотація:
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.
5
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.
Повний текст джерелаАнотація:
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.
6
Iksar, Elena, and Zamira Nazirova. "IMPROVING THE ENERGY EFFICIENCY OF TRACTION MOTORS TAKING INTO ACCOUNT THE ASSESSMENT OF THE THERMAL CONDITION." International Journal of Advanced Logistics, Transport and Engineering 2, no. 2 (2022): 14–19. http://dx.doi.org/10.52167/2790-5829-2022-2-2-14-19.
Повний текст джерелаАнотація:
The article presents methods for evaluating the calculation of the thermal state of the asynchronous drive of an electric locomotive engine, taking into account the complex operating modes of the asynchronous drive (recovery), Assessing the thermal state of traction asynchronous electric motors, taking into account power losses, will increase the energy performance of the electric drive and will continuously monitor the thermal state of the asynchronous traction motor, as well as timely prevent possible emergencies.
7
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.
Повний текст джерелаАнотація:
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.
8
Ovsyannikov, E. M., B. A. Ivobotenko, V. M. Yurkevich, and E. M. Koshelyev. "Direct torque control of asynchronous traction motor." Izvestiya MGTU MAMI 7, no. 2-1 (2013): 188–94. http://dx.doi.org/10.17816/2074-0530-68300.
Повний текст джерелаАнотація:
This paper proposes a new system of direct torque control of asynchronous traction motor with space vector modulation of voltage supply. The results of the simulation of traction asynchronous traction motor show advantages of the developed control system: simplicity of implementation, high dynamic performance and small fluctuations of the electromagnetic torque.
9
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.
Повний текст джерелаАнотація:
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.
10
Sulym, A. "A METHODOLOGY TO SELECT ASYNCHRONOUS TRACTION ELECTRIC DRIVE FOR INNOVATIVE METRO ROLLING STOCK." Collection of scientific works of the State University of Infrastructure and Technologies series "Transport Systems and Technologies" 1, no. 37 (2021): 97–118. http://dx.doi.org/10.32703/2617-9040-2021-37-11.
Повний текст джерелаАнотація:
The paper deals with the justification of the need to use an asynchronous traction electric drive on the metro rolling stock. The advantages of using an asynchronous traction electric drive in comparison with a DC commutator motor drive are formulated. The characteristics of modern innovative metro rolling stock with asynchronous traction electric drive of domestic and foreign production are analyzed. Aspects of the choice of a variable frequency asynchronous traction electric drive for innovative rolling stock are formulated and the existing typical algorithm of such choice is given. The main reasons for the irrational choice of traction asynchronous electric drive for the metro rolling stock are considered and the consequences of such a choice are analyzed. It is proposed to improve the methodology for selecting a variable frequency traction asynchronous electric drive for the metro rolling stock in terms of such an important operational factor as the specific cost of electrical energy for traction. The rational parameters of the variable frequency asynchronous traction electric drive according to the proposed procedure for the specified characteristics of the metro rolling stock are specified. The reserves of energy savings for the given conditions due to the introduction of an asynchronous traction electric drive with rational parameters on the innovative rolling stock are determined. It is established that the efficiency factor of the asynchronous traction motor significantly affects the specific electric energy consumption for the metro rolling stock traction and operating costs.
11
Tarlajanu, Alexandru. "METHODOLOGICAL AND INSTRUMENTAL SUPPORT TO DEVELOPMENT OF ELECTRIC TRACTION SYSTEMS WITH ASYNCHRONOUS MOTOR." Journal of Engineering Science 29, no. 4 (2023): 27–37. http://dx.doi.org/10.52326/jes.utm.2022.29(4).06.
Повний текст джерелаАнотація:
The present work aims to analyze from a methodological and instrumental point of view the development of asynchronous motor propulsion systems. For this purpose, PWM and SVM modulation methods, FOC and DTC vector control techniques, as well as their advantages and disadvantages are described. The theoretical bases and functional schemes of FOC and DTC control are given, including the asynchronous motor mathematical model, similar to the direct current motor model. Special attention is paid to creating of a common meaning for describing the components operation equations of the traction system, equations that can be used for system modeling and simulation. The paper also refers to a series of modern voltage converters with vector control, which are produced by several companies in different countries and are intended for the control of three-phase asynchronous motors. The results of the study create a basis for research and development of traction systems with multiphase asynchronous motors for urban electric passenger vehicles.
12
Dubravin, Y., and V. Tkachenko. "RESEARCH ON THE MODEL OF ASYNCHRONOUS TRACTION ENGINE OF THE AC ELECTRIC LOCOMOTIVE." Collection of scientific works of the State University of Infrastructure and Technologies series "Transport Systems and Technologies", no. 39 (June 30, 2022): 175–89. http://dx.doi.org/10.32703/2617-9040-2022-39-17.
Повний текст джерелаАнотація:
Promising electromotive rolling stock is based on application of asynchronous traction engines with a short-circuited rotor. The use of asynchronous traction motor controller allows: increase power, tractive force and speed of electromotive rolling stock, promote reliability and bring down the cost of life cycle, increase lifetime. In addition to this asynchronous traction motor controller of double power gives an opportunity to provide train traffic through the areas of direct current with a voltage of 3 kV as well as on the areas of alternating current with voltage of 25 kV at a frequency of 50 Hz without replacement of electromotive rolling stock. In the article the mathematical model of asynchronous traction engine is considered taking into account electric and mechanical part of traction motor controller. A model describes electromagnetic processes in stator windings in the fixed α, β, γ coordinate system, which has its axis combined with the axis of stator phases A, B, C. Processes in a shortcircuited rotor are described in the rotating a, b, c coordinate system. For the modeling of mechanical part of motor controller basic equation of dynamics, that characterizes ratio between an electromagnetic torque and section modulus in the shaft of the electric motor, is used. In a proposed model simulation and structural modeling methods were implemented by means of function modules of the Simulink library. A model allows to investigate transition processes given: nonsinusoidal and asymmetric supply voltage; saturation of the magnetic system; current crowding out effect in the rotor conductors; presences of shortings between the turns of the stator winding and damages of rotor rods. A mathematical model is implemented as matrix Simulink model of asynchronous engine in MatLab. Credibility of the mathematical model was checked up while conducting virtual researches of electromechanics characteristics of asynchronous engine of type AD914.The outcome confirmed the adequacy of the implemented model and the possibility of the implemented model to be used in other applications.
13
Enache, Sorin, Monica-Adela Enache, and Ion Vlad. "Considerations Regarding the Middle Power Asynchronous Motors for Railway Electrical Traction." Energies 17, no. 17 (2024): 4327. http://dx.doi.org/10.3390/en17174327.
Повний текст джерелаАнотація:
In modern electric traction, direct current traction motors have been replaced with asynchronous motors with a short-circuited rotor. The justification is that asynchronous motors are more reliable, cheaper, and have smaller weights and dimensions, so they are more sustainable. In order to start and adjust the speed required in traction, these motors are powered from the contact line using a transformer and a static voltage and frequency converter. As a result, you can use green electricity produced with wind power plants or solar energy converted with photovoltaic panels, increasing sustainability because the consumption of traditional fuels is reduced. This paper presents various simulations emphasizing the negative effects of the distorting regime, with concrete results. The quality of the simulations carried out is increased by using a mathematical model, which uses the variable parameters of the motor dependent on the modulation of the current and the magnetic saturation. In modern 1500 kW electric locomotives, the traction motors are powered by static converters, which means an increase in losses when operating at nominal load on the motors by 38.7 kW and 217.8 kVAR compared to the sinusoidal three-phase power supply. Thus, the research carried out provides qualitatively and quantitatively correct simulations of the non-sinusoidal regime related to the asynchronous traction motor in order to increase the sustainability of this traction system.
14
Fedotov, Ilya, and Vyacheslav Tikhonov. "Simulation of Traction Electric Drive with Vector Systems of Direct Torque Control." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 2 (August 8, 2015): 106. http://dx.doi.org/10.17770/etr2013vol2.846.
Повний текст джерелаАнотація:
The article deals with investigation of electromechanical and energetic characteristics of traction electric drive with vector systems of direct torque control. As a controlled object the traction asynchronous motor ДТА-1У1, which is used to drive the trolley-bus is considered. At the present time the usage of traction asynchronous electric drives for town transport is relevant. Due to development of power electronic devices and microprocessor-based control systems it became possible to replace DC electric drives with electric drives with asynchronous motors. The article contains brief description of two different types of control systems: field-oriented control (FOC) and direct torque control (DTC). Principles of work for both systems are considered and the main advantages and disadvantages associated with the use of these systems are pointed out. The models of both systems for traction asynchronous electric drive, built in modeling environment MATLAB/Simulink, are given in this article for further comparative analysis. As the main quality factor of control total harmonic distortion (THD) is used.
15
Titova, T. S., A. M. Evstaf’ev, and A. A. Pugachev. "Vector control system of electric traction drive with power losses minimization." Journal of Physics: Conference Series 2131, no. 4 (2021): 042090. http://dx.doi.org/10.1088/1742-6596/2131/4/042090.
Повний текст джерелаАнотація:
Abstract Based on the operating conditions analysis of electric traction drives of locomotives, it has been established that the vector control systems for an asynchronous motor fully satisfy all the requirements. On the basis of a T-shaped equivalent circuit, a mathematical model of an induction motor is presented, taking into account losses in the stator steel, the effect of the rotor current and saturation displacement. An algorithm for the formation of the optimal, from the point of view of power losses, task for the rotor flux linkage when using a vector control system with the orientation of the axes of the coordinate system along the rotor magnetic field, is developed. The limiting factors are the limitations on the current and voltage of the motor stator, the diesel generator set power. A shared control system for an electric traction drive with asynchronous motors has been developed, which provides direct control of wheel slip with a subordinate vector control system that minimizes power losses. The results of modeling in a steady-state operation and a start-up mode for an electric traction drive of a two-axle bogie with axial support and 630 kW asynchronous motors with the use of various options for organizing circuit reentrances are presented.
16
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.
Повний текст джерелаАнотація:
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.
17
Iksar, Elena, Zamira Nazirova, and Kamila Jurayeva. "THERMAL PROCESSES OF ASYNCHRONOUS FREQUENCY-CONTROLLED MOTOR TAKING INTO ACCOUNT TRACTION LOADS." Вестник КазАТК 123, no. 4 (2022): 366–71. http://dx.doi.org/10.52167/1609-1817-2022-123-4-366-371.
Повний текст джерелаАнотація:
In the article proposes a method for estimating the thermal state of an asynchronous traction motor. A block diagram of a thermal model of an asynchronous traction motor is presented in which the stator and rotor are modeled as concentric rotating cylinders. The convection heat exchange between two rotating cylinders is represented by modeling an air gap with an effective thermal conductivity that takes into account both thermal conductivity and convection.
18
Kulinich, Yu M., S. A. Shukharev, and A. V. Gulyaev. "Increasing the energy efficiency of auxiliary machines of AC electric locomotive." VNIIZHT Scientific Journal 80, no. 5 (2021): 276–84. http://dx.doi.org/10.21780/2223-9731-2021-80-5-276-284.
Повний текст джерелаАнотація:
Currently, an asynchronous variable frequency drive based on semiconductor converters is widely used due to the relative simplicity and reliability of the design. The use of digital microprocessor systems ensures high accuracy and flexibility of drive control. On the domestic rolling stock, the widespread introduction of asynchronous motors began to replace DC traction motors with sequential excitation. In particular, scalar-controlled asynchronous motors are used on serially produced 2TE25A diesel locomotives and EP20 electric locomotives. The auxiliary asynchronous machines of these locomotives are controlled by the vector control method. The use of a new type of engine on the rolling stock makes it possible to achieve a significant increase in the quality of consumed energy and reduce the consumption of electricity for traction of trains. Ensuring the energy efficiency of the drive in a wide range of loads requires further research. In this regard, the issue of saving energy resources becomes very urgent. The article proposes a vector control scheme for asynchronous motors of auxiliary machines of an electric locomotive, which implements an extreme method of control according to the criterion of minimizing the consumed current. The analysis of the engine operation is carried out based on its mathematical model in a rotating coordinate system d — q, which is implemented in the MatLab/Simulink software package. As a result of simulation modeling, it was found that the extreme control system with a variable step allows for each fixed value of the electromagnetic moment of the motor in the minimum time to find the optimal (extreme) value of the magnetic flux of the motor rotor, which corresponds to the minimum value of the stator current. The developed model of the motor with vector control is supplemented with an extreme regulator device, which allows achieving the best energy performance of the motor and reducing electrical losses in all operating modes with a minimum search time. The presented research results can be used in the development of energy-saving control systems for an asynchronous motor.
19
Sakhanov, I., A. Veselkov, and Aleksandr Ilin. "PERMANENT-MAGNET ROTARY MOTORS." HUMAN. ENVIRONMENT. TECHNOLOGIES. Proceedings of the Students International Scientific and Practical Conference, no. 22 (April 25, 2018): 54–57. http://dx.doi.org/10.17770/het2018.22.3636.
Повний текст джерелаАнотація:
Different types of traction motors (DC, asynchronous, valve with excitation from permanent magnets) are compared. It is demonstrated that a valve motor with excitation from permanent magnets is the most suitable for using in electric vehicles and electric buses.
20
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.
Повний текст джерелаАнотація:
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.
21
Yang, Ye Song, Guang Sheng Ren, and Xiao Qing Yin. "Measurement and Control System for Traction Motor Based on OPC Technology." Advanced Materials Research 542-543 (June 2012): 208–11. http://dx.doi.org/10.4028/www.scientific.net/amr.542-543.208.
Повний текст джерелаАнотація:
The paper analyzes the working principle and the advantages and disadvantages of synchronous access and asynchronous access in OPC standard. Take the traction motor performance test and control system as example. It used Visual Basic development OPC client and used PC Access as an OPC Server. The performance test bed for traction motor realize the measurement and control system efficient, stable and reliable operation. According to the characteristics of different parameters, the system chooses the methods of Subscription and Synchronous Write which used the advantages of synchronous access and asynchronous access.
22
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.
Повний текст джерелаАнотація:
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.
23
Kamalov, Ikram Saidakbarovich, and Akmal Akhror ugli Hayitboev. "RESEARCH OF HIGH-SPEED MODES OF HIGH-SPEED ELECTRIC ROLLING STOCK." Eurasian Journal of Academic Research 1, no. 9 (2022): 690–93. https://doi.org/10.5281/zenodo.5813577.
Повний текст джерела
24
Zong, Jian, Ping Qian, and Xue Feng Ding. "Study of Electrical Traction Locomotive Control System Based on Feed-Forward Decoupling Strategy." Advanced Materials Research 516-517 (May 2012): 1935–38. http://dx.doi.org/10.4028/www.scientific.net/amr.516-517.1935.
Повний текст джерелаАнотація:
An asynchronous motor is widely used in traction locomotive system now, AC induction motor is nonlinear, strongly coupled and multivariable system, so it is very difficult to control as a linear system. For this, VVVF(Variable Voltage Variable Frequency) control method adopt in some running traction locomotives, that can reduce over-current with load starting and should be compensated at low frequency. Based on study the Control strategies of locomotives, vector control adopt in most electrical traction locomotive. According to the drawing performance requirements of electrical traction motor, feed-forward decoupling method adopted. Simulation and experiment proved this method can meet the traction locomotive control requirements.
25
Khamidov, O. R., and A. V. Grishchenko. "Locomotive asynchronous traction motor rolling bearing fault detection based on current intelligent methods." Journal of Physics: Conference Series 2131, no. 4 (2021): 042084. http://dx.doi.org/10.1088/1742-6596/2131/4/042084.
Повний текст джерелаАнотація:
Abstract The paper is devoted to current issues of locomotive asynchronous traction motor (ATEM) fault detection using neural networks. Developed sophisticated intelligent methods for monitoring and inspecting the technical condition of ATE bearings. Current absorption spectra are analysed to assess the technical condition of the induction bearing units. The mechanical vibration frequencies of a squirrel cage induction motor are presented. The method of artificial neural networks which are universal approximators and can effectively and efficiently solve problems of monitoring and diagnostics of technical condition of locomotive induction traction motors is applied. A neural network model and framework for monitoring the technical condition of ATED bearings has been developed. They are based on rules and user-provided facts to recognise the situation, make a diagnosis, formulate a solution or make a recommendation. The main failures of the bearing units of squirrel cage ATED are analysed. A methodology has been developed to build a neural network model of the ATED. The structure and architecture of the artificial neural network is defined. An experimental research has been conducted. The results enable the determination of bearing faults in asynchronous traction motors with squirrel cage rotor.
26
V. M. Bezruchenko and O. A. Khoroshko. "The traction electric operation and its exploitation abilities." Science and Transport Progress, no. 38 (September 25, 2011): 63–67. http://dx.doi.org/10.15802/stp2011/6808.
Повний текст джерелаАнотація:
The possibilities of asynchronous traction electric motor drive are considered at the certain coupling mass taking into account the coupling restrictions. A variant of using the regulation law for electric motor drive allowing realizing traction force more rationally is offered. The possibility of reaching the speeds to 220 km/h for electric locomotive DS3 is shown
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Fediaieva, H. O. "THE INFLUENCE OF PARAMETERS OF INDUCTION MOTOR DYNAMIC MODES IN THE TRACTION ELECTRIC LOCOMOTIVES." Science and Transport Progress, no. 15 (April 25, 2007): 135–39. http://dx.doi.org/10.15802/stp2007/17746.
Повний текст джерелаАнотація:
The computer modeling method and results of dynamical modes in asynchronous traction drive on perspective trunk diesel locomotives with voltage inverters by using DAT305 and DTA470 traction engines are present
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Manafov, E. K., H. B. Guliyev, and F. H. Huseynov. "Real-Time Assessment of the Technical Condition of Traction Motors Using Machine Learning and IoT Technologies." Science and Transport Progress, no. 2(110) (June 4, 2025): 50–64. https://doi.org/10.15802/stp2025/331096.
Повний текст джерелаАнотація:
Purpose. The purpose of this research is to analyze machine learning algorithms, select the most accurate and efficient algorithm for diagnosing the technical condition of an induction traction motor based on operating parameters such as temperature, noise, and vibration, and study the features of using Internet of Things (IoT) technology to assess technical conditions in real time. Methodology. The machine learning algorithm suitable for diagnosing the technical condition of asynchronous traction motors was identified through analysis and comparative methods. Findings. Machine learning algorithms were analyzed, and two distinct algorithms, K-means and Extreme Machine Learning (EML), were selected for diagnosing the technical condition of asynchronous motors. The algorithms were compared based on performance metrics such as accuracy, specificity, sensitivity, positive predictive value, and negative predictive value. The results revealed that the EML algorithm outperformed K-means in these metrics, achieving an overall performance score of 93%. Originality. A novel system was proposed that integrates a machine learning model with IoT technology for real-time diagnostics of the technical condition of traction electric motors. This innovative approach enables dynamic monitoring of the motor's technical state. Compared to traditional temperature diagnostic systems, such a multi-parameter system will allow you to determine a specific malfunction. Practical value. The proposed system, based on a machine learning model, evaluates the technical condition of traction motors in real-time using IoT. It provides recommendations on when maintenance should be performed, based on the actual condition of the motor. The system allows for maintenance planning based on real-time diagnostics, facilitating a shift from scheduled maintenance to predictive maintenance strategies. This, in turn, increases operational lifespan and minimizes unplanned downtime. By leveraging IoT, the diagnostic system can integrate with motor control systems or SCADA systems, enabling remote monitoring and control of motor operations.
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Migal, Vasiliy, Shchasiana Arhun, Andrii Hnatov, Hanna Hnatova, and Pavlo Sokhin. "Improving the quality of traction electric mo-tors for electric transportation." Vehicle and electronics. Innovative technologies, no. 23 (June 29, 2023): 6–14. http://dx.doi.org/10.30977/veit.2023.23.0.1.
Повний текст джерелаАнотація:
Problem. Despite the widespread use of asynchronous electric motors (ED) in electric transportation, they often fail to meet high reliability requirements. This is primarily due to their operation in a wide range of rotational frequencies, variable load modes, frequent stops and starts, and challenging road conditions. These factors result in significant vibrations of traction asynchronous EDs, leading to reduced reliability and service life. Goal: The goal of this study is to develop methods to enhance the reliability and longevity of traction asynchronous EDs by improving the design and manufacturing technology of the stator housing and rotor of the electric motor. Methodology: Analytical research methods were employed to investigate approaches for improving the quality of traction electric motors for electric transport. Experimental research methods were used to determine the technical condition of EDs based on their vibrodiagnostic parameters. Statistical methods were utilized to process experimental data. Results: Vibration levels, which are indicative of the technical condition of EDs, were selected as the primary criterion for assessing their quality. The proposed design and manufacturing technology for asynchronous electric motors enable the following: increased manufacturing and assembly precision of EDs, simplified assembly process, reduced number of sorted parts during inspection and bearing replacement, and the development of an asynchronous traction ED with a power capacity of 90 kW and a rotational frequency of 3000 rpm, meeting class D requirements with permissible vibration levels. Originality: This study presents developed methods for increasing the reliability and longevity of traction asynchronous EDs through experimental approaches. The one-sided arrangement of base surfaces in the stator housing and the attachment of rotor bearing units enabled the production of a vertical ED assembly consisting of two independently controlled units: a housing with a shield and a rotor with bearing units. Practical Value: The achieved reduction in vibration levels allows for a predicted 2-3 times increase in the lifespan of the developed ED, depending on operating conditions. Furthermore, the created ED meets all environmental standards' requirements for vibration levels.
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Pugachev, Alexander, and Galina Fedyaeva. "Definition of the Transfer Function Parameters of Asynchronous Motor as an Object of Temperature Control." Applied Mechanics and Materials 698 (December 2014): 124–30. http://dx.doi.org/10.4028/www.scientific.net/amm.698.124.
Повний текст джерелаАнотація:
The analysis and systematization of research methods of thermal state of induction motors including traction ones is done. It is shown that for each type of motor it is necessary to develop its own mathematical model of thermal processes, and its verification should be carried out only on the basis of experimental investigations. The structure and operating principles of the complex developed physical model of the traction electric drive with induction motors is represented. The motors have a cooling system with variable-speed electric fan and subsystem of measurement and recording of monitored parameters. The method and the results of experimental study of the processes of heating and cooling of the induction motor are illustrated. Transfer functions and approximation curves of transients are proposed, their parameters are defined.
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Sekara, Nagamani Chandra, Somanatham R, and Chaitanya Kumar U. "Design and Analysis of Drive System with Slip Ring Induction Motor for Electric Traction in India." International Journal of Power Electronics and Drive Systems (IJPEDS) 5, no. 3 (2015): 374. http://dx.doi.org/10.11591/ijpeds.v5.i3.pp374-382.
Повний текст джерелаАнотація:
The use of Squirrel Cage for Traction has revolutionised the motive power of a Locomotive. The Asynchronous Motor is rugged with high starting Torque, has a very smooth Voltage and Speed control as compared to a DC Series Motor. When looking at the Traction perspective, a Slip Ring Induction Motor can be an alternative to the Squirrel Cage Motor as it has higher starting Torque and better efficiency than a Squirrel Cage Motor. the Slip Power Recovery scheme also plays a proactive role as ther can be substantial savings of energy in case of a Slip Ring Induction Motor. A detailed design and analysis of a Drive System with Slip Ring Induction Motor for Electric Traction is presented in this Research Paper
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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.
Повний текст джерелаАнотація:
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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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.
Повний текст джерелаАнотація:
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
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Olkhovatov, D. V., and A. V. Shevkunova. "Development of the energy-efficient asynchronous electric drive of a locomotive blower motor." Herald of the Ural State University of Railway Transport, no. 3 (2023): 46–55. http://dx.doi.org/10.20291/2079-0392-2023-3-46-55.
Повний текст джерелаАнотація:
For the ventilation system of a traction electric drive of an alternating current electric locomotive, the asynchronous electric drive with high technical and economic indicators has been developed. According to the compiled system of equations for the operation of the asynchronous motor in the rotating coordinate system, a computer model in the SimInTech software package and direct start model are constructed, graphs of transients in current velocity in two modes are obtained. It is proposed to start and regulate the rotational speed of the asynchronous electric motor using a frequency converter and speed feedback control systems. Such a technical solution enables limiting the starting currents within two nominal values. In addition, setting the speed of an electric drive blower motor based on the current temperature of traction engines will reduce the energy consumed by the electric drive and the noise level in a locomotive crew compartment. For solving the tasks assigned in this research paper, the systematic approach, method of physical modeling, provisions of theoretical electrical engineering, numerical modeling on a PC using the SimInTech software package were used.
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Chen, Si, Fang Wang, and Jun Ci Cao. "Modal Analysis on Rotor of Asynchronous Traction Motor Used in High-Speed Trains." Applied Mechanics and Materials 274 (January 2013): 374–77. http://dx.doi.org/10.4028/www.scientific.net/amm.274.374.
Повний текст джерелаАнотація:
According to the suffered various impacts and vibrations of traction driving part in high-speed train under complex operating environments and conditions, the modal problems in the rotor of traction motor, power output device in traction transmission system, working in high-speed trains is investigated. In this paper, a Finite Element Analysis model for rotor modal simulation research is established, by using which the influences of structure parts on motor natural frequency is analyzed. From the simulation analysis, the natural frequencies, the vibration mode and the amplitude of each order modes are obtained, which could provide a theoretical basis for the rapid, stable and safety operation of high-speed trains.
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Ovsyannikov, E. M., and Thieu Nguyen Quang. "Synthesis of Direct Torque Control System of Asynchronous Traction Electric Drives." Izvestiya MGTU MAMI 5, no. 2 (2011): 41–46. http://dx.doi.org/10.17816/2074-0530-69839.
Повний текст джерелаАнотація:
The paper proposes a method for the synthesis of a direct torque control of asynchronous electric drives with separate control of the magnetic flow and electromagnetic torque. The authors show the results of simulation of asynchronous electric drive, advantages of the developed motor control system: ease of construction, high dynamic quality, small fluctuations of electromagnetic torque.
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Lukashov, Nikolay, Vitaly Suslov, Artem Masonov, Oleg Magankov, and Sergey Sergeev. "IMPROVING THE INSULATION RELIABILITY OF THE TRACTION ASYNCHRONOUS MOTOR OF A LOCOMOTIVE BY OPTIMIZING ITS DESIGN PARAMETERS." Transport engineering 2025, no. 5 (2025): 57–62. https://doi.org/10.30987/2782-5957-2025-5-57-62.
Повний текст джерелаАнотація:
Traction asynchronous electric motors (TAEM) have a key place among locomotive electric drives, ensuring the reliability and efficiency of railway transportation. During TAEM operation, their insulation materials can be exposed to various influences, which lead to aging, degradation and, eventually, to possible emergency situations. In this regard, the assessment of the insulation condition of the rods of the traction asynchronous electric motor of a locomotive with different sections of the rotor windings is an urgent task. A study of the condition of TAEM insulation coatings and the determination of their service life depending on various shapes of the rotor windings based on the method of temperature distribution in the windings is carried out. It is found out that the lowest heating temperatures of the rotor windings are fixed with a trapezoidal section of the stator windings, which results in less wear of TAEM insulating coatings during operation.
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Zarif'yan, Aleksandr, and Pavel Kolpahch'yan. "Calculation Method for Determining Losses in Electric Locomotive Asynchronous Traction Motor under Changing Load." Bulletin of scientific research results 2023, no. 2 (2023): 81–91. http://dx.doi.org/10.20295/2223-9987-2023-2-81-91.
Повний текст джерелаАнотація:
Purpose: In the work [1], an experimental study of the energy efficiency of electric locomotive asynchronous traction drive under changing load has been carried out. In this article, the task is to develop a method for calculating the losses in an asynchronous traction motor (ATM) when powered by a converter, depending on the changing load. Methods: When ATM is powered by a converter and voltages and currents are non-sinusoidal, the determination of losses is a difficult problem, since a significant number of factors must be taken into account. An approach based on the separation of losses and the utilization of experimental results has been employed. To calculate the losses, an approach used in the theory of electrical machines has been applied. It is based on the separation of losses, which consist of electrical (losses in copper), magnetic (losses in steel), mechanical and additional ones. Since the stator current contains higher harmonics, the electrical losses in the stator winding are determined taking into account the effect of current displacement. To ascertain the magnitude of magnetic losses, the harmonic composition of the flux linkage in the air gap is determined, the losses from each harmonic are calculated and summarized. Additional losses in the nominal mode are considered equal to 0.5% of the ATM power. The total loss in the ATM is determined by the summation of all the specified losses. The results of the DTA-1100 type traction motors tests according to the mutual load scheme given in [1] have been used as initial information for calculating the losses. Results: First of all, the losses in the DTA-1100 traction motor have been calculated when operating in the nominal mode. The obtained efficiency value, equal to 0.962, is in good agreement with the passport data of the engine, which is declared as 0.96. Further, the losses in the ATD when operating in variable modes are determined by calculation. A pattern of calculated losses depending on the power on the motor shaft has been established, which practically coincide with the losses found during tests on the stand, in the entire range of loads. Practical significance: The proposed method is inherently universal, and the reliability of the results obtained is confirmed by comparison with the experiment. The technique can be used to determine the energy efficiency of asynchronous traction motors of domestic electric and diesel-electric locomotives and electric trains.
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Visin, M. H., and D. A. Zabarylo. "The six-wheel fright truck locomotive of double delivery uses radio-frequency transfer with padding and asynchronized traction impellents." Science and Transport Progress, no. 36 (March 25, 2011): 64–69. http://dx.doi.org/10.15802/stp2011/8712.
Повний текст джерелаАнотація:
Our research offers a new perspective loading pattern of the 12-wheel double-feed freight electric locomotive with the asynchronous tractive motor using an adapter transformer with the high-frequency uncoupler. This will make it possible to decrease the traction-feeding transformer mass 2.3 times, to remove the current pulse advancing on the track circuit and therefore the influence on the work of the ALSE and CBS. So the railway traffic safety will be increased considerably.
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Kodkin, Vladimir, Alexander Anikin, and Alexander Baldenkov. "Optimization of Traction Electric Drive with Frequency Control." World Electric Vehicle Journal 16, no. 3 (2025): 139. https://doi.org/10.3390/wevj16030139.
Повний текст джерелаАнотація:
Traction motors in electric transport are most often synchronous permanent magnet motors (PMSMs). Induction motors (IMs) have large dimensions and stator current amplitudes under comparable loads. Traditional IM control methods do not solve these problems. Recent studies have shown that by changing the main magnetic flux in the IM in accordance with the load, these characteristics of the asynchronous electric drive can be significantly improved. Standard frequency converters do not allow for the implementation of these algorithms. But it makes sense to conduct a potential assessment of the capabilities of this algorithm to reduce the total stator currents of traction IMs. This article analyzes the results of real tests of a special vehicle for transporting rock inside mines, conducted several years ago at a mining equipment plant and in several mines in Russia. The prototype of the special transport vehicle has a load capacity of 15 tons, and its traction electric drive is based on four motor wheels with a total power of 100 kW and a frequency converter from the company “Vacon” (Vaasa, Finland). The tests were conducted at the plant’s testing ground and in real mine conditions. These tests allowed us to obtain information about the operation of the asynchronous electric drive under dynamically changing loads in a wide range, which is very difficult to obtain on laboratory benches or in industrial enterprise conditions. The experiments confirmed the efficiency of the optimization algorithm for asynchronous electric drives with frequency control. At the same time, the weight, size, and electrical parameters of the drive are as close as possible to those of direct current drives.
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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.
Повний текст джерелаАнотація:
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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Grishchenko, A. V., and M. A. Shrajber. "Simulation of thermal processes in asynchronous traction electric motor of a locomotive." Journal of Physics: Conference Series 2131, no. 4 (2021): 042088. http://dx.doi.org/10.1088/1742-6596/2131/4/042088.
Повний текст джерелаАнотація:
Abstract This article analyzes the problem of increasing the reliability of AC traction electric machines installed on traction rolling stock. In the course of the study, a finite element model of thermal processes was built, and the thermal state of an asynchronous traction motor (ATED) of a diesel locomotive was studied in the Solid Works program. The basic method for studying thermal processes in ATED was the finite element method (FEM), as well as the basic equations of heat transfer and the theory of heating a multicomponent solid. The constructed finite element model of the ATED rotor of a diesel locomotive makes it possible to determine the dependence of the temperature values of the rotor elements on the current flowing through them. The obtained values of the temperature distribution of the ATED squirrel-cage rotor are recommended to be taken into account in the design, manufacture and testing of AC electric machines of diesel locomotives.
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Pirmatov, N. B., U. T. Berdiyev, K. K. Usmonov, T. M. Nazirkhanov, and U. N. Berdiyorov. "Device for measuring the magnetic scattering field of the frontal part of the stator winding of a traction asynchronous electric motor of an electric rolling stock." E3S Web of Conferences 401 (2023): 03021. http://dx.doi.org/10.1051/e3sconf/202340103021.
Повний текст джерелаАнотація:
The article deals with the issues of improving the energy efficiency of mainline locomotives with asynchronous traction motors by determining the characteristics of the traction drive using a device for measuring the magnetic scattering field of the frontal part of the stator winding.
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Kamalov, Ikram Saidakbarovich, and Abdurauf Utamurat ugli Izbasarov. "FOREIGN EXPERIENCE IN CREATING ELECTRIC ROLLING STOCK WITH ASYNCHRONOUS TRACTION MOTORS." Eurasian Journal of Academic Research 1, no. 9 (2022): 694–97. https://doi.org/10.5281/zenodo.5813592.
Повний текст джерела
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Makaras, Rolandas, Sergey Goolak, and Vaidas Lukoševičius. "Investigation of the Influence of Filter Approximation on the Performance of Reactive Power Compensators in Railway Traction Drive Systems." Applied Sciences 15, no. 13 (2025): 7057. https://doi.org/10.3390/app15137057.
Повний текст джерелаАнотація:
In reactive power compensators applied in drives with asynchronous motors, a control strategy focusing on the compensation of higher-order current harmonics is implemented. Control schemes of such compensators typically employ low-pass Butterworth filters with fixed cut-off frequencies to isolate the reactive power component. However, the impact of alternative filter types on compensator performance remains insufficiently explored. Furthermore, in the control systems under consideration, stator phase current signals of the asynchronous motor are used as reference inputs. This approach proves effective under the steady-state operating conditions of the drive. Under non-steady-state operating conditions—typical for traction drive systems—this approach becomes ineffective due to the increased complexity in obtaining accurate reference current signals. As a result, the performance of the filters also deteriorates. It is therefore proposed to investigate the impact of alternative filter types on the efficiency of compensator operation. To address this challenge, the following strategies are suggested: implement higher-order harmonic compensation in the system of stator phase supply voltages of the asynchronous motor; use the control signals from the Field-Oriented Control (FOC) algorithm as reference inputs; and adapt the cut-off frequencies of the filters dynamically to match the frequency of the supply voltage. The simulation results indicate that the use of an elliptic filter in compensator control systems yielded the highest effectiveness. Moreover, the results confirmed the efficiency of the proposed solutions under both steady-state and non-steady-state operating conditions of the traction drive. These approaches support the development of reactive power compensators integrated into traction drive systems for railway rolling stock.
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Pugachev, Aleksandr, Vladimir Vorob'ev, Oleg Izmerov, and Evgeniy Nikolaev. "DEVELOPMENT OF A SUPPORT-AXIAL DRIVE OF PASSENGER ELECTRIC TRAINS WITH ASYNCHRONOUS TRACTION ENGINES." Transport engineering 2023, no. 3 (2023): 45–58. http://dx.doi.org/10.30987/2782-5957-2023-3-45-58.
Повний текст джерелаАнотація:
The problem of import-substituting components for the support-axial traction drive of an electric train with a wheel diameter of 950 mm is considered. As a result of the analysis, the disadvantages of the drive using foreign components are revealed: a high unsprung mass, which worsens the impact of the crew on the track, the difficulty of providing the required dynamic properties with elastic support of the motor-gear unit on the axle, the complexity of manufacturing and assembling the drive. The inexpediency of copying foreign solutions to create a domestic analogue of a traction drive is established. Variants of technically possible traction drive adapted for domestic production and easier to manufacture are considered. It is proposed to use a traction drive with a high-torque support - frame traction engine, with an increased outer diameter and the same circumferential speed of the rotor and an axial gearbox. It is proved that in this case, due to a decrease in the speed of the drive shaft, the design of the gearbox is simplified, which can be made single-reduction, and it becomes possible to use the developed and studied domestic flat rubber-cord couplings. A new design of the transverse rubber-cord coupling is proposed. For the case of using a domestic high-speed traction electric motor in the drive, it is proposed to use an aggregate-type traction drive. Two utility model patents are obtained for the proposed technical solutions and a patent application is filed.
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Kurilin, Sergey P., Vladimir V. Fedotov, Irina S. Savateeva, and Alexander V. Zakharov. "Mathematical model for the design of linear asynchronous electric motors and its software implementation." Journal Of Applied Informatics 19, no. 1 (2024): 96–112. http://dx.doi.org/10.37791/2687-0649-2024-19-1-96-112.
Повний текст джерелаАнотація:
Mathematical models are the main tool for the layout design of linear asynchronous electric motors. Existing design models of linear asynchronous electric motors assume that the device is powered from a source of multiphase symmetrical positive sequence current, which excludes from consideration the asymmetry of the inductor phase currents and the associated reduction in traction force. This approach is not flexible enough, since the operation of linear asynchronous electric motors in a wide range of movement speeds assumes a functional relationship between the current asymmetry coefficient and the movement speed. The study developed a mathematical model for design purposes that implements the functional relationship between the current asymmetry coefficient and the speed of movement. The mathematical model represents 13 linear equations linking geometric dimensions, current loads, electromagnetic field characteristics and mechanical forces with the speed of the secondary element of the electric motor. The current load of an electric motor has a variable degree of ellipticity depending on the speed of movement. An algorithmic study of the mathematical model was carried out and corresponding software modeling tools were developed. The proposed program algorithm, containing two subroutines, is implemented using the Maple symbolic computing software package. In order to expand the range of users, the software model is additionally implemented in C++. In this case, the functional dependence of the asymmetry coefficient of the exciting current wave on the speed of movement is implemented in the form of an iterative procedure for the case of connecting the winding of the linear asynchronous electric motors inductor to a source of symmetrical three-phase voltage according to the “triangle” circuit. Using the example of a three-phase linear asynchronous electric motors, the electromagnetic and mechanical characteristics of the electric motor were simulated. It was stated that the influence of current asymmetry on the mechanical characteristics of the linear asynchronous electric motors is small and is expressed in the region of high speeds. This makes it possible, in design tasks for the layout of an electric motor, to use models that involve powering the linear asynchronous electric motors from a symmetrical current source or to introduce a fixed asymmetry coefficient into them.
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Goolak, Sergey, Borys Liubarskyi, Vaidas Lukoševičius, Robertas Keršys, and Artūras Keršys. "Operational Diagnostics System for Asymmetric Emergency Modes in Traction Drives with Direct Torque Control." Applied Sciences 13, no. 9 (2023): 5457. http://dx.doi.org/10.3390/app13095457.
Повний текст джерелаАнотація:
This article presents an analysis of the causes behind the development of asymmetric modes in a traction drive system that features direct torque control (DTC) of a rolling stock with asynchronous traction motors. The development of asymmetric modes in the traction drive system was found to be caused by the asymmetry of the supply voltage system, the asymmetry of the traction motor windings, and transient processes triggered by a change in the inverter supply voltage and variation in the traction motor load. At the same time, the asymmetric modes caused by the asymmetry of the feed voltage system and the windings of the traction motor are the emergency modes. The influence of the asymmetry of the feed voltage system and asymmetry of the windings of traction motor on the starting characteristics of the phase currents and flux linkages of the stator in the steady-state mode was investigated. In these cases, the ratio of the amplitudes of phase currents and flux linkages of the stator of different phases was found to be constant. The effect of a variation in the feed voltage and load acting on the motor shaft on the starting characteristics of phase currents and flux linkages of the stator was investigated in the case of absence of the emergency modes. In these cases, the ratio of the amplitudes of phase currents and flux linkages of the stator of different phases was found to not be constant. The amplitudes of the phase current and stator flux linkage were proposed as criteria for diagnosis and identification of asymmetric emergency modes. An algorithm and a structural scheme have been proposed for the diagnosis of emergency asymmetric modes in the traction drive system with direct torque control. Modifications to the traction drive system with direct torque control are suggested in order to diagnose the presence of faulty asymmetric modes and identify the damaged traction drive element.
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Kulbashna, N., V. Daleka, and O. Kulbashnyi. "INCREASING THE ENERGY EFFICIENCY OF ELECTRIC DRIVES OF SUBWAY CARS." Municipal economy of cities 1, no. 175 (2023): 13–18. http://dx.doi.org/10.33042/2522-1809-2023-1-175-13-18.
Повний текст джерелаАнотація:
The article proposes the use of a frequency-controlled drive for regulating asynchronous electric motors used on subway cars. The proposed solution creates all the grounds for increasing the energy efficiency of electric cars and, in general, the entire metro. Taking into account that the subway is one of the most used types of urban transport in large cities of Ukraine and at the same time consumes a significant part of electricity, therefore, in the conditions of rising prices for energy resources, these issues become the most urgent. It is shown that the methods of regulation of subway engines are not covered widely enough in scientific research, but the methods of increasing the energy efficiency of drives generally accepted in industrial spheres are a developed direction. This reveals the possibilities of integrating the developed methods for application on subway cars. The use of a frequency converter, which changes the frequency of rotation of the motor rotor by changing the frequency and amplitude of the supply voltage using vector and scalar control, is a generally accepted method of motor regulation. There are a number of conflicting findings in research regarding the use of scalar or vector control, with some favoring the induction vector control system. However, a clear regulation is not required to regulate the operation of metro engines. Therefore, the article considers scalar control, which has not lost its importance due to the ease of implementation and adjustment and is used in various areas of industry and transport. The parameters of the STDa 280-4B-UK type STDa 280-4B-UK traction asynchronous traction motor with a capacity of 180 kW, manufactured by the EMIT Cantoni Motors company, which are installed on subway cars of the 81-7036/7037 series, were used for the study. The parameters of the T-substitution scheme of the asynchronous electric drive and the numerical values of the vectors of the asynchronous motor were calculated. To analyze the operation of an asynchronous motor, the article uses the mechanical characteristic of the dependence of the motor torque on slippage at certain frequency values. It has been established that an asynchronous motor can operate stably only in a limited slip range, when the moment reaches its maximum value and the motor stops, as it has a load limit. The main reason for this is the increase in the influence of the active resistance of the stator winding when the supply voltage frequency decreases. The solution to this problem is the introduction of IR-compensation into the control system of the electric drive, which provides positive feedback on the stator current acting in the voltage channel. To demonstrate the effect of IR compensation, a comparison of mechanical characteristics was made before and after its introduction into the control system. Therefore, it was proved that the application of IR compensation is a promising direction of work, as the value of the electromagnetic moment increases significantly in the case of a low control frequency. Keywords: energy efficiency, asynchronous electric motor, subway, electric drive, scalar control, IR compensation.
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STASENKO, Igor S., Nikita V. HERASIMENKO, and Viktor S. SAVITSKI. "METHODOLOGY FOR DESIGNING A TRACTION MOTOR FOR TRANSPORT." Mechanics of Machines, Mechanisms and Materials 1, no. 58 (2022): 24–30. http://dx.doi.org/10.46864/1995-0470-2022-1-58-24-30.
Повний текст джерелаАнотація:
The article is devoted to the design of an asynchronous traction motor intended for work as part of an electric drive of vehicles: electric vehicles, electric buses, trams, trolley buses. The object of the study is a medium-sized bus. The required traction characteristics of the electric motor are constructed, the nominal and limiting characteristics of the increased torque. The dynamic characteristics have been built for a bus with a mechanical transmission and a diesel engine, as well as for a bus with an electric motor. A method is proposed for designing an electric motor based on mathematical modelling of its operation in the software complexes ANSYS RMxprt and INFOLYTICA MAGNET. According to this technique, the main parameters of the electric motor are determined. The results of modelling are given, graphs of the criteria dependence on the electric motor parameters. Experimental studies of the electric motor have been carried out. The results of mathematical modelling are compared with experimental ones. It was found that the discrepancy between the results of experimental and theoretical studies is no more than 5 %.