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<p>To resolve the issues of complex and redundant control structures and the inherent lag in traditional coupled control algorithms, as well as to enhance the control accuracy and synchronization performance of dual-motor systems, this paper proposes a speed collaborative pre-compensation control strategy for a dual permanent magnet synchronous motor (PMSM) system. A speed collaborative pre-compensation controller for the dual-motor system is designed without altering the traditional parallel control structure of the original dual-motor system. This is accomplished by incorporating the concept of model predictive control (MPC). First, an incremental prediction model of the dual-motor system is established to obtain the multi-step prediction output matrix. Subsequently, the optimal compensation amounts <i>v</i><sub>1</sub> and <i>v</i><sub>2</sub> are obtained by minimizing the cost function containing the synchronization error and tracking errors. The optimal compensation amounts are then applied in advance to the q-axis voltages of the system. Finally, it is demonstrated through experiments that the proposed control strategy can effectively enhance the coupling of the dual motor. In addition, the structure is simple and reliable, with optimized dynamic performance and reduced adjustment time. It can implement the pre-compensation control to effectively improve the synchronous performance of the dual-motor system.</p>

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Speed collaborative pre-compensation control of dual permanent magnet synchronous motor systems

  • 期刊论文

  • 发表日期：

    2025年8月13日

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  • Xiuyun Zhang,
  • Jianyu Chen,
  • Zhiwei Sun,
  • Zhibiao Zhao,
  • Tao Liu,
  • Baoshan Zhao

摘要

To resolve the issues of complex and redundant control structures and the inherent lag in traditional coupled control algorithms, as well as to enhance the control accuracy and synchronization performance of dual-motor systems, this paper proposes a speed collaborative pre-compensation control strategy for a dual permanent magnet synchronous motor (PMSM) system. A speed collaborative pre-compensation controller for the dual-motor system is designed without altering the traditional parallel control structure of the original dual-motor system. This is accomplished by incorporating the concept of model predictive control (MPC). First, an incremental prediction model of the dual-motor system is established to obtain the multi-step prediction output matrix. Subsequently, the optimal compensation amounts v1 and v2 are obtained by minimizing the cost function containing the synchronization error and tracking errors. The optimal compensation amounts are then applied in advance to the q-axis voltages of the system. Finally, it is demonstrated through experiments that the proposed control strategy can effectively enhance the coupling of the dual motor. In addition, the structure is simple and reliable, with optimized dynamic performance and reduced adjustment time. It can implement the pre-compensation control to effectively improve the synchronous performance of the dual-motor system.