Mathematical model of mechanical subsystem of traction electric drive of an electric locomotive

Goolak, Sergey; Sapronova, Svitlana; Tkachenko, Viktor; Riabov, Ievgen; Overianova, L. V.; Yeritsyan, Bagish

doi:10.33216/2222-3428-2021-21-12

Cited by 5 publications

(11 citation statements)

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“…In an autonomous voltage inverter, the 5SNA1200G450350 modules are used as the IGBT module. Their specifications are provided in Table 3 [39,40]. Thus, it is relevant to compare the characteristics of a vector system and the direct torque control of asynchronous electric motors of an electric traction drive, taking into account the nature of the operation and operational features of an electric rolling stock.…”

Section: Methodsmentioning

confidence: 99%

“…These factors lead to short-term transient processes, which, in turn, lead to short-term asymmetrical modes in the power circuits of the electric traction drive. In [41], it is indicated that in the presence of asymmetry in the power supply system, the application of a mathematical model of the asynchronous motor in three-phase coordinates would be the most appropriate. This kind of model can be found in the investigation [38].…”

Section: Rationale For Selecting a Mathematical Model For The Electri...mentioning

confidence: 99%

“…The simulation model of the implementation of the structural block diagram (Figure 1) made in the MATLAB software environment is presented in Figure 2. The speed setting was arranged in the standard Simulink "Signal Builder" library block and was selected based on the analysis of torque and speed diagrams [38,41]. The analysis suggested that the duration of the transient process in the motor was 0.7 s. During this period, the torque pulsations on the electric motor shaft were higher by a factor larger than the nominal value.…”

Section: Adaptation Of the Existing Vector Control And Direct Torque ...mentioning

confidence: 99%

“…Therefore, for the magnetic biasing of the magnetic system of the electric motor, the supply voltage was fed to the stator windings within the time interval of 0 to 0.7 s, and the speed setter was not activated. This meant that the speed setting delay would The speed setting was arranged in the standard Simulink "Signal Builder" library block and was selected based on the analysis of torque and speed diagrams [38,41]. The analysis suggested that the duration of the transient process in the motor was 0.7 s. During this period, the torque pulsations on the electric motor shaft were higher by a factor larger than the nominal value.…”

Section: Adaptation Of the Existing Vector Control And Direct Torque ...mentioning

confidence: 99%

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Analysis of the Efficiency of Traction Drive Control Systems of Electric Locomotives with Asynchronous Traction Motors

Goolak¹,

Liubarskyi

Riabov

et al. 2023

Energies

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An analysis of the operating conditions of the traction drives of an electric rolling stock with asynchronous traction motors was conducted. In the process of operation, the electric traction drive with both direct torque control and vector control was found to possibly experience unstable modes, both in terms of power supply and load. The models of electric locomotive traction drives with asynchronous electric motors with either vector or direct torque control were adapted to account for the possible presence of the aforementioned operational factors. As a result of the modeling, the starting characteristics of the electric traction drives with different control systems were obtained both in the absence and in the presence of power supply and load disturbances. The following cases were investigated for the drive with vector and direct torque control in the absence of power supply and torque disturbances: drive output at the rated speed of rotation of the electric motor shaft; 10% reduction in the rated speed; 10% increase in the rated speed. The comparison of the results obtained has demonstrated that, at lower than nominal frequencies, the electric traction drive with direct torque control has higher accuracy in its regulation of the rotational speed and torque, lower power consumption from the power supply, lower torque overshooting, but a higher level of torque pulsations than the electric traction drive with vector control. Meanwhile, at higher than nominal frequencies, the vector control has higher accuracy in its regulation of the speed, lower torque overshooting, shorter duration of transient processes, and lower torque pulsations than the direct torque control. Moreover, as a result of the investigations, the traction drive with direct torque control has been found to be more resistant to power supply and load disturbances. The results of this work are applicable to the investigation of the influence of electric traction drive control methods on the energy efficiency of the traction drive of an electric locomotive with an alternating current (AC).

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Section: Methodsmentioning

confidence: 99%

Section: Rationale For Selecting a Mathematical Model For The Electri...mentioning

confidence: 99%

Section: Adaptation Of the Existing Vector Control And Direct Torque ...mentioning

confidence: 99%

Section: Adaptation Of the Existing Vector Control And Direct Torque ...mentioning

confidence: 99%

See 2 more Smart Citations

Analysis of the Efficiency of Traction Drive Control Systems of Electric Locomotives with Asynchronous Traction Motors

Goolak¹,

Liubarskyi

Riabov

et al. 2023

Energies

View full text Add to dashboard Cite

show abstract

“…This factor is not important for solving the problems posed in [2]. But when it is necessary to take into account the electromechanical processes in the traction drive, the influence of the track profile, the result of the interaction of the wheel with the rack, the mechanical part should be present in the mathematical model [13][14][15].…”

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

Self Cite

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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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Simulation of a direct torque control system in the presence of winding asymmetry in induction motor

et al. 2023

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The operation of a direct torque control (DTC) system for induction motors with the possible presence of unbalanced modes in the motor windings is studied. It is shown that in the presence of asymmetric modes in the motor windings, the classical DTC algorithm becomes unstable. It is proposed to improve the DTC by taking into account the unbalance of the active resistances of the motor stator windings when determining the DTC parameters. This will make it possible to study electrodynamic processes in DTC with the possible presence of asymmetric modes in the windings of induction motor.

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Mathematical model of mechanical subsystem of traction electric drive of an electric locomotive

Cited by 5 publications

References 0 publications

Analysis of the Efficiency of Traction Drive Control Systems of Electric Locomotives with Asynchronous Traction Motors

Analysis of the Efficiency of Traction Drive Control Systems of Electric Locomotives with Asynchronous Traction Motors

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

Simulation of a direct torque control system in the presence of winding asymmetry in induction motor

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