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<p>In this study, a deadbeat-direct average torque and flux control based on nonlinear maximum torque per ampere (MTPA) method is proposed to reduce torque ripple and improve the operational efficiency of switched reluctance motor. First, based on the average torque control method, discretely deadbeat voltage equations are constructed by directly solving the differential equations to satisfy the decoupled control of torque and flux. Second, the MTPA control is adopted to find the optimal reference flux linkage, which involves determining the relationship among torque, current, and flux. In addition, considering the nonlinear variation of inductance caused by magnetic circuit saturation, the accuracy of MTPA trajectory auto-tracking can be further improved by adopting inductance estimation to obtain a high torque ampere ratio and enhance the steady-state performance of torque. Finally, the conventional deadbeat-direct torque and flux control and the proposed method are compared through simulation and experiment, and results verify the correctness and effectiveness of the proposed method.</p>

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Deadbeat-direct average torque and flux control for switched reluctance motors based on nonlinear MTPA

  • 期刊论文

  • 发表日期：

    2025年8月27日

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  • Aide Xu,
  • Shining Lin,
  • Xiong Su

摘要

In this study, a deadbeat-direct average torque and flux control based on nonlinear maximum torque per ampere (MTPA) method is proposed to reduce torque ripple and improve the operational efficiency of switched reluctance motor. First, based on the average torque control method, discretely deadbeat voltage equations are constructed by directly solving the differential equations to satisfy the decoupled control of torque and flux. Second, the MTPA control is adopted to find the optimal reference flux linkage, which involves determining the relationship among torque, current, and flux. In addition, considering the nonlinear variation of inductance caused by magnetic circuit saturation, the accuracy of MTPA trajectory auto-tracking can be further improved by adopting inductance estimation to obtain a high torque ampere ratio and enhance the steady-state performance of torque. Finally, the conventional deadbeat-direct torque and flux control and the proposed method are compared through simulation and experiment, and results verify the correctness and effectiveness of the proposed method.