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Abstract <p>The potentialities of direct control used for the instantaneous torque of a switched reluctance motor for traction electric drives are considered. The reasons have been revealed due to which, upon the usual division in the control system of one rotor revolution into eight equal sectors, the limitation in torque ripple can be possible only in a relatively small range of low velocities, whereas an excessive increase in the voltage of the power supply is required for expansion of this range. The effectiveness of increasing the number of sectors to 12 with a corresponding change in their angular dimensions is justified. It is proposed to change the angular starting positions for switching adjacent phases depending on the set torque and velocity of the motor. The proposed measures make it possible to provide the correct operation of the torque-ripple compensation algorithm for any combinations of preset torque and motor velocity values within their rated values in the case of an additional power-supply voltage margin being no more than 10%. The efficiency of the proposed solutions is confirmed by simulation in the environment of the MATLAB Simulink software package.</p>

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Direct Torque Control in a Four-Phase Traction Switched Reluctance Motor Drive with the Maximum Use of Power-Supply Voltage

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • A. B. Krasovsky,
  • S. A. Vasyukov

摘要

Abstract

The potentialities of direct control used for the instantaneous torque of a switched reluctance motor for traction electric drives are considered. The reasons have been revealed due to which, upon the usual division in the control system of one rotor revolution into eight equal sectors, the limitation in torque ripple can be possible only in a relatively small range of low velocities, whereas an excessive increase in the voltage of the power supply is required for expansion of this range. The effectiveness of increasing the number of sectors to 12 with a corresponding change in their angular dimensions is justified. It is proposed to change the angular starting positions for switching adjacent phases depending on the set torque and velocity of the motor. The proposed measures make it possible to provide the correct operation of the torque-ripple compensation algorithm for any combinations of preset torque and motor velocity values within their rated values in the case of an additional power-supply voltage margin being no more than 10%. The efficiency of the proposed solutions is confirmed by simulation in the environment of the MATLAB Simulink software package.