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<p>This paper explores the Polynomial Torque Ripple Control (PTRC) implementation in BLDC motors for a 120-degree trapezoidal drive system utilizing Hall sensors for the deployment of electronic commutation. The paper aims to achieve accurate balancing of the reference current with the actual stator current and accordingly produced with a third order polynomial method for minimizing commutation torque ripple (CTR). Control strategies incorporate direct current sensing along with hysteresis current controller to effectively manage outgoing and incoming phase currents. The proposed PTRC method not only ensures balanced magnetization of both phases during the commutation interval but also optimizes the trapezoidal stator current profile to minimize torque ripple. It is proved from the results of both experiments and simulation that the proposed PTRC scheme significantly reduces torque ripples, particularly during commutation. This paper explores the gain of achieving efficient torque ripple reduction with a 120-degree trapezoidal drive system using Hall sensors in BLDC motors.</p>

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Advanced reduction of torque ripple in BLDC motors using polynomial reference stator current generation

  • 期刊论文

  • 发表日期：

    2025年1月6日

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  • Jayandiran Sundaram,
  • Karpagam Raj,
  • Jebarani Evangeline Stephen,
  • Selligoundanur Subramaniyam Sivaraju

摘要

This paper explores the Polynomial Torque Ripple Control (PTRC) implementation in BLDC motors for a 120-degree trapezoidal drive system utilizing Hall sensors for the deployment of electronic commutation. The paper aims to achieve accurate balancing of the reference current with the actual stator current and accordingly produced with a third order polynomial method for minimizing commutation torque ripple (CTR). Control strategies incorporate direct current sensing along with hysteresis current controller to effectively manage outgoing and incoming phase currents. The proposed PTRC method not only ensures balanced magnetization of both phases during the commutation interval but also optimizes the trapezoidal stator current profile to minimize torque ripple. It is proved from the results of both experiments and simulation that the proposed PTRC scheme significantly reduces torque ripples, particularly during commutation. This paper explores the gain of achieving efficient torque ripple reduction with a 120-degree trapezoidal drive system using Hall sensors in BLDC motors.