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Journal articles on the topic 'Traction drives'

Author: Grafiati

Published: 4 June 2021

Last updated: 20 February 2023

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1

LEE, Adrian, Andrew HILLSDEN, Yoshihiro ONO, and Stephen EVANS. "TD-03 FULL-TOROIDAL TRACTION DRIVE HIGH TEMPERATURE DURABILITY(TRACTION DRIVES)." Proceedings of the JSME international conference on motion and power transmissions 2009 (2009): 658–65. http://dx.doi.org/10.1299/jsmeimpt.2009.658.

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2

Goolak, Sergey, Viktor Tkachenko, Svitlana Sapronova, Vaidas Lukoševičius, Robertas Keršys, Rolandas Makaras, Artūras Keršys, and Borys Liubarskyi. "Synthesis of the Current Controller of the Vector Control System for Asynchronous Traction Drive of Electric Locomotives." Energies 15, no. 7 (March 24, 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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3

YAMAMOTO, Takeshi, Kiyofumi YOSHITANI, Yasushi TOMITA, and Kenji MORI. "TD-06 AN ANALYSIS OF THE BEHAVIOR AND PERFORMANCE OF A STEPPED TRACTION DRIVE TRANSMISSION(TRACTION DRIVES)." Proceedings of the JSME international conference on motion and power transmissions 2009 (2009): 677–80. http://dx.doi.org/10.1299/jsmeimpt.2009.677.

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4

Shipilevskiy, G. B., and G. V. Novikov. "Structure and dynamic of control of tractor electric drive." Izvestiya MGTU MAMI 7, no. 1-1 (January 10, 2013): 254–62. http://dx.doi.org/10.17816/2074-0530-68385.

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The authors consider the characteristics of operation regimes and control of tractors with electric drives taking into account dynamic properties of controlled objects and requirements to its quality. Objects are the traction drive, including a turn of a tracked tractor, drives of PTO and hydraulic system pumps, and the “engine-generator” system.

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5

Lingaitis, Leonas Povilas, and Lionginas Liudvinavičius. "ELECTRIC DRIVES OF TRACTION ROLLING STOCKS WITH AC MOTORS." TRANSPORT 21, no. 3 (September 30, 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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TANAKA, Hirohisa, and Nozomi TOYODA. "TD-02 LIQUID TO SOLID DRIVE OF A HALF-TOROIDAL CVT(TRACTION DRIVES)." Proceedings of the JSME international conference on motion and power transmissions 2009 (2009): 653–57. http://dx.doi.org/10.1299/jsmeimpt.2009.653.

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7

GOI, Tatsuhiko, Tooru NISHIDA, and Hirohisa TANAKA. "TD-6 HIGH SPEED TRACTION DRIVE FOR AIRCRAFT APPLICATIONS(TRACTION DRIVES)." Proceedings of the JSME international conference on motion and power transmissions II.01.202 (2001): 849–54. http://dx.doi.org/10.1299/jsmeimpt.ii.01.202.849.

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8

Savos’kin, A. N., and N. D. Shilin. "Analysis of wheel pairs slip control of electric freight locomotive with asynchronous traction motors." RUSSIAN RAILWAY SCIENCE JOURNAL 81, no. 3 (September 6, 2022): 230–39. http://dx.doi.org/10.21780/2223-9731-2022-81-3-230-239.

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Introduction. Every year, the amount of electric rolling stock with asynchronous traction motors is continuously increasing on the Russian railway network, since such traction drives have a number of advantages over drives with DC motors. One of the problems associated with the introduction of asynchronous motors and an increase in the mass of trains is the implementation of the maximum traction force by an electric locomotive at the threshold in terms of wheel – rail adhesion. Timely recognition of excessive slip of wheel pairs is the most important indicator of the efficiency of the traction drive in realising the maximum traction properties of the electric locomotive at all axles.Materials and methods. The article reflects the results of the study of slip of electric locomotive wheel pairs with asynchronous traction motors and axial control of the traction force, obtained during experimental runs on a railway section under various adhesion conditions. The article presents a technique for studying the wheel pair adhesion failure of electric locomotives with asynchronous traction motors.Results. During the comparison of the obtained experimental results with the calculated parameters by the O. Polach mathematical model, an updated range of the relative slip of wheel pairs is given, in which the electric locomotive control system could realise the maximum tractive effort. Exceeding this range will lead to increased wear of wheel pairs without increasing traction properties.Discussion and conclusion. It is advisable to use the results of the study in the future when developing systems for controlling the tractive effort at the limit of adhesion and systems for controlling the slip of wheel pairs of electric freight locomotives with asynchronous traction motors.

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9

TOYODA, Toshiro, and Takashi IMANISHI. "TD-01 EFFICIENCY OF TOROIDAL CVT(TRACTION DRIVES)." Proceedings of the JSME international conference on motion and power transmissions 2009 (2009): 647–52. http://dx.doi.org/10.1299/jsmeimpt.2009.647.

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10

Ai, Xiaolan. "Development of Zero-Spin Planetary Traction Drive Transmission: Part 2 — Performance Testing and Evaluation." Journal of Tribology 124, no. 2 (July 24, 2001): 392–97. http://dx.doi.org/10.1115/1.1405131.

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A tapered roller planetary traction drive based on a so-called zero-spin design was built for performance evaluation. The traction drive demonstrated, in many aspects, superb performance characteristics. The zero-spin design increased the torque capacity and enabled the traction drive to operate under both fully lubricated and starved lubrication conditions. The traction drive improved mechanical efficiency compared with traction drives of conventional designs and was able to achieve high efficiency up to 99 percent. The traction drive had satisfactory temperature performance.

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11

Kholodilin, I. Yu, A. V. Korzhov, M. A. Grigoriev, Yu I. Khokhlov, and N. V. Savosteenko. "Highly efficient electric drive with vision system for traction applications in heavy tracked vehicles." Omsk Scientific Bulletin, no. 180 (2021): 41–47. http://dx.doi.org/10.25206/1813-8225-2021-180-41-47.

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A new type of electric motor as a traction drive DET400 based on a field regulated reluctance machine (FRRM) provides high energy efficiency and high specific torque. A comparison is made between FRRM and various types of traction electric drives. The issues of designing the FRRM are considered, the geometric parameters of the electric machine are optimized to achieve the maximum specific indicators. To expand the functionality and ensure operational safety, it is proposed to introduce computer vision into the electronic control system. As a result, the FRRM is designed for traction applications based on the real requirements of a Russian-made crawler tractor.

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12

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.

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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.

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13

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.

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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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14

NARITA, Yukihito, Masashi YAMANAKA, and Katsumi INOUE. "TD-07 MEASUREMENT OF EFFICIENCY OF SHAFT DRIVE CVT USING ZERO-SPIN DISK(TRACTION DRIVES)." Proceedings of the JSME international conference on motion and power transmissions 2009 (2009): 681–86. http://dx.doi.org/10.1299/jsmeimpt.2009.681.

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15

Garramiola, Fernando, Javier Poza, Patxi Madina, Jon del Olmo, and Gaizka Almandoz. "A Review in Fault Diagnosis and Health Assessment for Railway Traction Drives." Applied Sciences 8, no. 12 (December 3, 2018): 2475. http://dx.doi.org/10.3390/app8122475.

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During the last decade, due to the increasing importance of reliability and availability, railway industry is making greater use of fault diagnosis approaches for early fault detection, as well as Condition-based maintenance frameworks. Due to the influence of traction drive in the railway system availability, several research works have been focused on Fault Diagnosis for Railway traction drives. Fault diagnosis approaches have been applied to electric machines, sensors and power electronics. Furthermore, Condition-based maintenance framework seems to reduce corrective and Time-based maintenance works in Railway Systems. However, there is not any publication that summarizes all the research works carried out in Fault diagnosis and Condition-based Maintenance frameworks for Railway Traction Drives. Thus, this review presents the development of Health Assessment and Fault Diagnosis in Railway Traction Drives during the last decade.

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16

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 (December 31, 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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17

OTAKI, Ryoichi, and Hisashi MACHIDA. "TD-3 STUDY OF THE TRACTION DRIVE TRANSMISSION USING WEDGE ACTION(TRACTION DRIVES)." Proceedings of the JSME international conference on motion and power transmissions II.01.202 (2001): 832–37. http://dx.doi.org/10.1299/jsmeimpt.ii.01.202.832.

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18

TAKEHARA, Koh. "Traction of Rolling Contact Drives." Journal of the Society of Mechanical Engineers 88, no. 805 (1985): 1361–66. http://dx.doi.org/10.1299/jsmemag.88.805_1361.

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19

Wasko, Curtis R. "AC Drives in Traction Applications." IEEE Transactions on Industry Applications IA-22, no. 5 (September 1986): 842–46. http://dx.doi.org/10.1109/tia.1986.4504802.

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20

Hill, R. J. "Electric railway traction. Part 1: Electric traction and DC traction motor drives." Power Engineering Journal 8, no. 1 (February 1, 1994): 47–56. http://dx.doi.org/10.1049/pe:19940105.

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21

Kosmodamianskiy, Andrey Sergeevich, Vladimir Ivanovich Vorobyev, Mikhail Yuryevich Kapustin, Oleg Vasilyevich Izmerov, Dmitriy Nikolaevich Shevchenko, and Alexander Vasilyevich Samotkanov. "Problems of development of traction drives with brushless traction motors for passenger electric locomotives." Transport of the Urals, no. 2 (2020): 20–25. http://dx.doi.org/10.20291/1815-9400-2020-2-20-25.

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The paper considers a problem of creation of new traction drives with brushless electric traction motors (ETM) for passenger locomotives. Analysis of drive designs revealed that the increase of power of induction motors through the increase of rotation frequency leads to the contradiction between requirements for the design reliability, on the one hand, and requirements for technological simplicity, on the other hand. In order to solve the contradiction it is necessary to use ETM designs that have enhanced torque and minimal dimensions in axial direction. It is established that ETM with disk rotor (axial magnetic flux) satisfy such requirements. The authors proposed an aggregate scheme of support-frame traction drives that include ETM with disk rotor, which allows significantly increasing the adaptability to manufacture and repairability of drive at preservation of reliability. As a result, the authors made a conclusion about the reasonability of conducting research and development work on creation of locomotive ETM with axial magnetic flux. The authors have submitted an application for a patent on the proposed design of traction drive.

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22

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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23

TOZAKI, Yasuyoshi, Takeshi YOSHIMI, Shuichi ISAYAMA, Hiroyuki SONOBE, Isamu SHIOTSU, and Susumu MATSUMOTO. "TD-08 DEVELOPMENT OF NEW LOW-COST CVT MICRO-TRACTION-DRIVE SYSTEM UTLIZING TAPERED BEARING : 1ST PEREORT CHARACTERISTICS OF ONE-WAY ROTATION(TRACTION DRIVES)." Proceedings of the JSME international conference on motion and power transmissions 2009 (2009): 687–94. http://dx.doi.org/10.1299/jsmeimpt.2009.687.

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24

Zong, Jian, Yi Ruan, Ming Hui Chen, and Li Bo Xu. "Study on Narrow-Gauge Traction Locomotive Control System." Advanced Materials Research 418-420 (December 2011): 2074–77. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.2074.

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Most narrow-gauge vehicles driven by DC motor now, as DC drive due to power constraints and high maintenance costs, most of them will gradually be replaced by AC drives. But VVVF(Variable Voltage Variable Frequency) control method adopt in some running narrow-track traction locomotives, that can reduce over-current with load starting and should be compensated at low frequency. Based on study the Control strategies of narrow-track locomotives, comparing with the characteristics of power distribution of dual-motor drive system. The motor ought to have the same mechanical feature in dual-motor drive system, vector control strategy select in the control system. Experiments prove the system has good performance of stability, reliability, and good control performance, which can meet the narrow-track traction locomotive control requirements.

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25

Omelyanenko, V. I., Ie S. Riabov, L. V. Overianova, and H. V. Omelianenko. "Traction electric drive based on fuel cell batteries and on-board inertial energy storage for multi unit train." Electrical Engineering & Electromechanics, no. 4 (July 29, 2021): 64–72. http://dx.doi.org/10.20998/2074-272x.2021.4.08.

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The aim of the work is to study the possibility and features of the use of inertial storage devices in the traction electric drive of multi unit train with a power plant based on fuel cells. Methodology. The principle of power flow control in traction electric drives in the modes of acceleration and braking of rolling stock is proposed. The mathematical model of the traction electric drive in the form of the combination of three components: the train, the traction unit and the battery of fuel cells is developed. It was used to study the operation of a traction electric drive when solving a test traction task for rolling stock. Results. It is established that the use of inertial energy storage reduces hydrogen consumption by at least 25 %, which increases the mileage of rolling stock between equipment by more than 30 %. Originality. The traction electric drive on the basis of fuel elements and the inertial energy storage for the multi unit train is offered. The work of the proposed traction electric drive in solving the test traction problem for rolling stock is investigated. Practical significance. A mathematical model of the traction electric drive has been developed. The test traction problem for rolling stock is solved.

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26

TOZAKI, Yasuyoshi, Noriyuki HAYASHI, Susumu MATSUMOTO, and Takahumi YOSHIDA. "TD-1 BASIC STUDY ON TRANSMITTED CHARACTERISTIC OF CROSSED AXLE TYPE TRACTION DRIVE(TRACTION DRIVES)." Proceedings of the JSME international conference on motion and power transmissions II.01.202 (2001): 821–25. http://dx.doi.org/10.1299/jsmeimpt.ii.01.202.821.

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27

Kumari, Jacinth. "Computer Aided Design Analysis of Electrical Motor Drives for Traction Application." International Journal of Scientific Research 3, no. 7 (June 1, 2012): 190–92. http://dx.doi.org/10.15373/22778179/july2014/60.

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28

FUCHS, Robert, and Tsutomu TAMURA. "TD-04 CONTROL FLEXIBILITY IN FULL TOROIDAL VARIATOR POWERTRAINS(TRACTION DRIVES)." Proceedings of the JSME international conference on motion and power transmissions 2009 (2009): 666–71. http://dx.doi.org/10.1299/jsmeimpt.2009.666.

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29

Petrov, L., A. Skorichenko, M. Shimonets, and S. Verpivsky. "THE RUNNING CAR WITH THE LETTERED REACTIVE POINT IN THE ZONI BEACH CONTACT THE WHEEL ROOM WITH THE SUPPORT SURFACE." Collection of scientific works of Odesa Military Academy 1, no. 12 (December 27, 2019): 120–32. http://dx.doi.org/10.37129/2313-7509.2019.12.1.120-132.

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Conclusion. As a result of the studies of the car with upgraded wheel drive: 1. The patent search of directions of modernization of wheel directions in modernization of wheel drives of the car allowed to identify possible directions of modernization of a wheel drive. 2. To modernize the wheel propulsion, it is proposed to include a movable weight acting on the flexible member in the area of contact and exit area. 3. Conducted experiments at the landfill of NATO NATI revealed the advantage of upgraded wheel propellers over the existing traction by 15-20% 4. Based on the results of the experiments graphical dependencies were constructed: - traction balance of the car; - ways of acceleration of the car; - the acceleration time of the car. 5. The model of the car with modernized wheel motors has been developed. Increasing the patency of military vehicles in difficult conditions close to combat ensures the success of the task. Therefore, the study of the modernization of the wheel drives of a military vehicle and their implementation in military units is an important scientific work. Purpose of the study: improving the patency of the military vehicle, the dynamics of its acceleration and wheel drive efficiency Objectives of the scientific work: is to improve the design of the wheel drive of a military vehicle, determine the parameters of traction balance, path and acceleration time. In the scientific work the researches of the military car with the modernized wheel propulsion, which are all leading, when using the car in difficult conditions close to combat, are carried out. Upgraded wheel drives allow the use of variable thrust and torque realization on the drives. During the work the tensometric laboratory was used for traction tests on the basis of MAZ-543 at the landfill of NAT NATI in Odessa. The main devices are a mobile measuring complex and an electronic dynamometer.

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Zou, Z., Y. Zhang, X. Zhang, and W. Tobler. "Modeling and Simulation of Traction Drive Dynamics and Control." Journal of Mechanical Design 123, no. 4 (October 1, 2000): 556–61. http://dx.doi.org/10.1115/1.1402128.

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This paper presents an analytical model for the simulation of traction drive dynamics and control in ratio change processes. The model systematically incorporates the formulations on the kinematics, dynamics and control characteristics of traction drives. In the model, the motion parameters of traction drive components are coupled to CVT inputs and outputs, torque losses, as well as ratio variations. The characteristics of a dual-feedback ratio control system are formulated in Laplace transform and integrated into the overall CVT system. The model is implemented in Matlab/Simulink block diagrams and is capable of predicting traction drive performances under various ratio change conditions. The effectiveness of the model is illustrated in a numerical example by the comparison between the simulation and experimental data on key CVT performance parameters.

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Burhanhodjaev, A., U. Berdiev, E. Iksar, and C. Kayumov. "AN ALGORITHM FOR CONTROLLING A TRACTION ASYNCHRONOUS DRIVE THAT MINIMIZES ELECTRICAL POWER LOSSES." Technical science and innovation 2020, no. 3 (September 30, 2020): 65–70. http://dx.doi.org/10.51346/tstu-01.20.3-77-0082.

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The article discusses the improvement of traction and energy performance main-line locomotives due to more complete use of possibilities of flexible microprocessor control and efficient algorithm that provides reduction of electrical losses in the traction asynchronous drive over the entire range working capacity. In the best way for a promising loco is tract with using a traction asynchronous drive. Such kind of tract drives allow completely use of the coupling mass of loco compares with collector track drive, due to the absence of a collector it is possible to increase the active length of the rotor and high reliability which makes it possible to realize increased axial power

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32

Burkhanhodjaev, Abit, Elena Iksar, and Mokhira Idriskhodjaeva. "An algorithm for controlling a traction asynchronous drive that minimizes electrical power losses." E3S Web of Conferences 216 (2020): 01107. http://dx.doi.org/10.1051/e3sconf/202021601107.

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The article discusses the improvement of traction and energy performance main-line locomotives due to more complete use of possibilities of flexible microprocessor control and efficient algorithm that provides reduction of electrical losses in the traction asynchronous drive over the entire range working capacity. In the best way for a promising loco is tract with using a traction asynchronous drive. Such kind of tract drives allow completely use of the coupling mass of loco compares with collector track drive, due to the absence of a collector it is possible to increase the active length of the rotor and high reliability which makes it possible to realize increased axial power.

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33

Steczek, M., A. Szeląg, and D. Chatterjee. "Analysis of disturbing effect of 3 kV DC supplied traction vehicles equipped with two-level and three-level VSI on railway signalling track circuits." Bulletin of the Polish Academy of Sciences Technical Sciences 65, no. 5 (October 1, 2017): 663–74. http://dx.doi.org/10.1515/bpasts-2017-0071.

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Abstract Electric traction vehicles cooperating with a 3kV DC traction system and equipped with drive systems based on voltage source inverters are the most significant sources of disturbances for a railway signalling system. Every traction vehicle to be authorised for operation on railway lines must fulfil the limits imposed on current harmonics magnitudes and those provided by railway operators. The solution introduced for prototypes of most modern traction drives is to replace the two-level inverters with three-level topology. Therefore, it is essential to establish the influence of the new solution on the railway signalling system. This paper presents a comparative analysis between simulation results delivered for two and three-level traction drive system regarding generation of disturbing current harmonics. Two types of VSI modulation techniques were taken under consideration: sinusoidal PWM (SPWM) and a new one, proposed by the authors, based on selective harmonic elimination (SHE). Furthermore, the authors presented application of one of the SHE based optimization techniques for shaping the EMU’s (electric multiple unit) DC side input current harmonics spectrum in order to meet the required limits. The described technique is based on off-line generation of a set of solutions for each of the VSI operating points and selection of the best solution for the assumed criteria. The applied simulation models and the concept of SHE control were verified in a laboratory by means of a low-power drive stand. Using the three-level inverter in traction drives system results in less current harmonics than using two-level topology without modification of the modulation technique. Thus, it does not guarantee fulfilling all limits assumed in this paper. The proposed modulation technique allows for fulfilling the limits, and the technical implementation of the proposed technique in a traction drive system will be considered in future studies.

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Abouzeid, Ahmed Fathy, Juan M. Guerrero, Iban Vicente-Makazaga, Iker Muniategui-Aspiazu, Aitor Endemano-Isasi, and Fernando Briz. "Torsional Vibration Suppression in Railway Traction Drives." IEEE Access 10 (2022): 32855–69. http://dx.doi.org/10.1109/access.2022.3162415.

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35

OKAMURA, Kikuo. "20907 Design of Mechanism with Traction Drives." Proceedings of Conference of Kanto Branch 2005.11 (2005): 77–78. http://dx.doi.org/10.1299/jsmekanto.2005.11.77.

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36

Bork, Dipl Ing H., and F. Pfeiffer. "Modeling and Simulation of Toroidal Traction Drives." IFAC Proceedings Volumes 33, no. 26 (September 2000): 109–14. http://dx.doi.org/10.1016/s1474-6670(17)39129-2.

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37

Brazhnikov, Andrey, Nikolay Dovzhenko, Andrey Minkin, Oksana Pomolotova, Anna Litvinenko, and Viktoriya Shilova. "Novel Type of EV Hybrid Traction Drives." International Journal of Control and Automation 7, no. 3 (March 31, 2014): 251–66. http://dx.doi.org/10.14257/ijca.2014.7.3.25.

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Müller, Jörg, Jens Liebold, Thomas Schuhmann, and Marcus Mayer. "Optimisation of Electric Motors for Traction Drives." ATZ worldwide 117, no. 10 (October 2015): 10–15. http://dx.doi.org/10.1007/s38311-015-0059-0.

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39

Frederick, L., and Gopal K. Dubey. "AC motor traction drives — A status review." Sadhana 22, no. 6 (December 1997): 855–69. http://dx.doi.org/10.1007/bf02745849.

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40

Hill, R. J. "Electric railway traction. Part 2: Traction drives with three-phase induction motors." Power Engineering Journal 8, no. 3 (June 1, 1994): 143–52. http://dx.doi.org/10.1049/pe:19940311.

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41

Sengamalai, Usha, T. M. Thamizh Thentral, Palanisamy Ramasamy, Mohit Bajaj, Syed Sabir Hussain Bukhari, Ehab E. Elattar, Ahmed Althobaiti, and Salah Kamel. "Mitigation of Circulating Bearing Current in Induction Motor Drive Using Modified ANN Based MRAS for Traction Application." Mathematics 10, no. 8 (April 8, 2022): 1220. http://dx.doi.org/10.3390/math10081220.

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Induction motors are popularly used in various applications because of the proposed modest construction, substantiated process, and limited size of specific power. The traditional AC traction drives are experimentally analyzed. There is a high circulating current due to the high Common-Mode Voltage (CMV). The high Circulating Bearing Current (CBC) is a major problem in conventional two-level voltage source inverter fed parallel-connected sensor-based induction motors for traction applications. A sensorless method is well known for shrinking costs and enhancing the reliability of an induction motor drive. The modified artificial neural network-based model reference adaptive system is designed to realize speed estimation methods for the sensorless drive. Four dissimilar multilevel inverter network topologies are being implemented to reduce CBC in the proposed sensorless traction motor drives. The multilevel inverter types are T-bridge, Neutral Point Clamped Inverter (NPC), cascaded H-bridge, and modified reduced switch topologies. The four methods are compared, and the best method has been identified in terms of 80% less CMV compared to the conventional one. The modified cascaded H-bridge inverter reduces the CBC of the proposed artificial neural network-based parallel connected induction motor; it is 50% compared to the conventional method. The CBC of the modified method is analyzed and associated with the traditional method. Finally, the parallel-connected induction motor traction drive hardware is implemented, and the performance is analyzed.

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Pugachev, Alexander. "Induction Motor Traction Drive with Slipping Protection." Applied Mechanics and Materials 792 (September 2015): 101–6. http://dx.doi.org/10.4028/www.scientific.net/amm.792.101.

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The advantages and shortcomings of three-level voltage source inverters to be applied on locomotive traction electric drives are highlighted in relation to two-level ones. To protect wheels from slipping on rails, the control system is designed. The control system with protection from slipping uses system of direct torque control as the subordinated contour to produce control signals on voltage source inverter. The topology and principles of operation of both protections from slipping and direct torque control of traction induction motor with three-level voltage source inverters are described. The simplified structure of mechanical part of traction drive using basic and axle suspension is considered. The adequacy of designed control system is confirmed by means of Matlab, the results of mathematical modeling show a high convergence with the results of physical model of traction drive.

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43

Skarpetowski, Grzegorz. "Realisation of the mechanical characteristic of a series excited DC machine in the drive with converter – fed induction machine." MATEC Web of Conferences 180 (2018): 01007. http://dx.doi.org/10.1051/matecconf/201818001007.

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A control algorithm for converter-fed induction machines, which allows the operation of the drive along of mechanical characteristic similar to the characteristic of series-excited direct current machine especially suitable for adhesion traction drives, is presented.

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Németh, Géza, and József Péter. "Development of Efficient Drive Based on Self-help." International Journal of Engineering and Management Sciences 4, no. 1 (March 3, 2019): 147–51. http://dx.doi.org/10.21791/ijems.2019.1.18.

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The efficiency and the life rating are essential characteristics of mechanical drives. The traction drives with proper geometry can avoid the geometrical slip and their efficiency can exceed that of the gear drives. The elements has hardened steel surfaces, the lubricant is rheopectic. There is no danger for thinning the oil film and consequently for connecting the asperities. The traction drives are relatively noiseless, they are applicable for increasing speed in particular. There are some problems to be solved in friction drive. This is the necessity of clamping force. A simple machine element usually make a constant clamping force, a tensioning mechanism can be too complicated. The ideal solution is a simple design which assure a clamping force that is proportional to the instantaneous external load requirements. The authors suggest a modified machine element – a helical torsion spring, an elastic one, instead of the original, rigid annular wheel – that comprises both the driving and clamping functions, and the latter one is proportional to the external load, so that the principle of self-help operates.

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YAMANAKA, Masashi, Yasuyuki YAMAZAKI, Katsumi INOUE, and Hitoshi HATA. "TD-2 EVALUATION OF CHARACTERISTICS OF TRACTION GREASE AT LOW TEMPERATURE(TRACTION DRIVES)." Proceedings of the JSME international conference on motion and power transmissions II.01.202 (2001): 826–31. http://dx.doi.org/10.1299/jsmeimpt.ii.01.202.826.

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Fathy Abouzeid, Ahmed, Juan Manuel Guerrero, Aitor Endemaño, Iker Muniategui, David Ortega, Igor Larrazabal, and Fernando Briz. "Control Strategies for Induction Motors in Railway Traction Applications." Energies 13, no. 3 (February 6, 2020): 700. http://dx.doi.org/10.3390/en13030700.

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This paper analyzes control strategies for induction motors in railway applications. The paper will focus on drives operating with a low switching to fundamental frequency ratio and in the overmodulation region or six-step operation, as these are the most challenging cases. Modulation methods, efficient modes of operation of the drive and the implications for its dynamic performance, and machine design will also be discussed. Extensive simulation results, as well as experimental results, obtained from a railway traction drive, are provided.

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BELL, Colin, and Romeo GLOVNEA. "TD-05 MODELLING AND SIMULATION OF A NOVEL, TORIDAL-TYPE, CVT(TRACTION DRIVES)." Proceedings of the JSME international conference on motion and power transmissions 2009 (2009): 672–76. http://dx.doi.org/10.1299/jsmeimpt.2009.672.

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Zhang, Y., X. Zhang, and W. Tobler. "A Systematic Model for the Analysis of Contact, Side Slip and Traction of Toroidal Drives." Journal of Mechanical Design 122, no. 4 (April 1, 1999): 523–28. http://dx.doi.org/10.1115/1.1290248.

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This paper presents a systematic model for the design and analysis of toroidal traction drive continuously variable transmissions (CVT). The contacts between the input disk, the roller and the output disk of the traction drive are formulated using the classical Hertzian contact theory. The traction force and side slip force occurring in CVT operation are modelled based on the elasto-hydrodynammic theory and are correlated to the traction drive geometric and kinematic parameters. The model allows for the quantitative analysis of traction drive operation under various torque inputs and over the desired ratio range. [S1050-0472(00)01004-7]

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Akehurst, S., D. A. Parker, and S. Schaaf. "CVT Rolling Traction Drives—A Review of Research Into Their Design, Functionality, and Modeling." Journal of Mechanical Design 128, no. 5 (October 3, 2005): 1165–76. http://dx.doi.org/10.1115/1.2214737.

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In this paper we detail a review of the current state of published work regarding the modeling of rolling traction drive Continuously Variable Transmissions (CVTs). An overview of CVTs operating by traction through small contact areas is performed, the layouts and kinematics of leading examples are reviewed, including the factors affecting design optimization. Properties of the traction contacts are considered in detail, with particular attention to elastohydrodynamic lubrication and asperity contact. Factors affecting the traction coefficient are reviewed and fundamental empirical predictions are contrasted with modern modeling computations. Finally measurements of the rheology of traction fluids are considered, leading to a definition of ideal properties and the development of proprietary fluids.

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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 (January 13, 2022): 150. http://dx.doi.org/10.3390/sym14010150.

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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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