Simulation Model of a Direct-Current Electric Locomotive with Commutator Traction Motors

Litovchenko, V. V.; Nazarov, D. V.; Sharov, V. A.

doi:10.3103/s1068371220010071

Cited by 5 publications

(3 citation statements)

References 1 publication

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“…Since DC motors of series excitation always operate in the loaded mode, electrodynamic processes in the electric motor should also be modeled taking into account the load. This can be confirmed by studies presented in works by [4][5][6]. The authors show relationship between the nature of load and mechanical characteristics of DCM.…”

supporting

confidence: 73%

Model of pulsating current traction motor taking into consideration magnetic losses in steel

Goolak

Riabov

Tkachenko

et al. 2021

Electrical Engineering & Electromechanics

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The aim of the work is to develop a mathematical model of the traction motor of the pulsating current of an electric locomotive taking into account the magnetic losses in the motor steel to determine the starting parameters depending on the voltage of the armature winding. Methodology. Mathematical modeling of electromagnetic processes in a traction motor of pulsating current is applied taking into account the nonlinear nature of the armature inductance, the inductance of the excitation winding and the nonlinear nature of the universal magnetic characteristic. The magnetic losses in the steel of the traction motor were taken into account by establishing the dependence of these losses on the frequency of reversal, the magnetic flux in the magnetic circuit of the motor and the geometric dimensions of the motor. Results. The mathematical model of calculation of starting parameters of the traction engine of the pulsating current of the traction drive of the electric locomotive of alternating current taking into account the equation of instantaneous value of losses in engine steel is developed. The dynamic characteristics of the traction motor with pulsating current are obtained. It allows to investigate starting parameters of the traction engine on the basis of the received mathematical model and to design elements of the traction drive of the electric locomotive according to the specification, to choose optimum design parameters. Originality. For the first time a comprehensive study of the pulsating current traction motor was carried out taking into account the nonlinear nature of the armature inductance, excitation winding inductance and nonlinear nature of the universal magnetic characteristic and taking into account the magnetic losses in the motor steel. Practical significance. The model of the traction motor of pulsating current taking into account losses in steel of the engine on the basis of the carried-out calculation is developed. Experimental studies have confirmed the adequacy of the model, which allows to apply the obtained model to develop a mathematical model of an AC electric locomotive to study the electrodynamic processes in it at different modes of operation of the electric locomotive.

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supporting

confidence: 73%

Model of pulsating current traction motor taking into consideration magnetic losses in steel

Goolak

Riabov

Tkachenko

et al. 2021

Electrical Engineering & Electromechanics

View full text Add to dashboard Cite

show abstract

“…-armature winding inductance is a constant value; -magnetic losses in the engine steel are not taken into account; -losses from the action of eddy currents are not taken into account; -mechanical part of the drive is not connected; -model works on one fixed position of the train. Studies [3][4][5] show that the excitation winding inductance is a function of the excitation current, and the armature winding inductance is a function of the armature current. Moreover, these dependencies are non-linear.…”

Section: Introductionmentioning

confidence: 99%

“…Not taking into account these dependencies is incorrect and will lead to an error in determining the parameters in the TECHNOLOGY AUDIT AND PRODUCTION RESERVES -№ 1/1(63), 2022 ISSN 2664-9969 simulation. Despite the obviously correct approach to taking into account the non-linear nature of the configuration of the values of the indicated inductances when the corresponding currents change, magnetic losses in the motor steel were not taken into account in [4,5].…”

Section: Introductionmentioning

confidence: 99%

Determination of voltage at the rectifier installation of the electric locomotive VL-80K for each position of the controller driver's

Goolak¹,

Yermolenko²,

Ткаченко³

et al. 2022

TAPR

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The object of research is the electrical processes in the control system of the traction drive of the electric locomotive VL-80K (Russia). To improve the accuracy of its mathematical model, it is necessary to use the values of the parameters determined during experimental studies of the traction drive control system. In particular, it is important to use in the traction drive model the value of the voltages on the arms of the rectifier installation of the electric locomotive, taking into account the position of the driver's controller. The complexity of the simulation lies in the fact that the reference does not provide the value of the voltage on the arms of the rectifier for each position of the driver's controller, which makes it difficult to verify the resulting model. A scheme for measuring the voltage value on the arms of the rectifier installation of an electric locomotive for each position of the position of the driver's controller is proposed. On its basis, a simulation model is developed in the MATLAB software environment. The simulation model implements an algorithm for closing the contactors of the electric group contactor for each position of the position of the driver's controller. Approbation of the voltage measurement technique was carried out on an electric locomotive of the VL-80K series during a trip on the Darnytsia-Myronivka section (Ukraine). Comparison of the voltage values on the arms of the rectifier installation, obtained experimentally, with the passport data showed that the measurement error was 0.5 %. In addition, the experimental results showed that the voltages on the arms of the rectifier for paired positions of the position of the driver's controller are the same, for odd ones they are different. Therefore, when simulating the operation of the traction drive control system, the voltage values on different arms of the rectifier installation were taken separately. Comparison of the simulation results for the nominal mode with passport data showed that for this mode the measurement error was 3.78 %. For all others, it did not exceed 5 %.

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Experimental Determination of Asynchronous Traction Drive Energy Efficiency Indicators Under Varying Load

Zarifyan¹,

Talakhadze

2022

Lecture Notes in Networks and Systems

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Simulation Model of a Direct-Current Electric Locomotive with Commutator Traction Motors

Cited by 5 publications

References 1 publication

Model of pulsating current traction motor taking into consideration magnetic losses in steel

Model of pulsating current traction motor taking into consideration magnetic losses in steel

Determination of voltage at the rectifier installation of the electric locomotive VL-80K for each position of the controller driver's

Experimental Determination of Asynchronous Traction Drive Energy Efficiency Indicators Under Varying Load

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