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<p>This paper proposes an efficient I/F control method for single-inverter dual-parallel (SIDP) permanent magnet synchronous motor (PMSM) drive systems. The stability of the SIDP PMSM drive during I/F control is analyzed using root locus analysis. Conventional I/F control operates the motor at the rated current, which leads to limitations in efficiency and degraded stability during control mode transitions. To address these issues, a current reduction technique is applied by controlling the angle between the I/F reference frame and the synchronous reference frame. This approach minimizes the current magnitude and ensures stable mode transitions. As a result, the current magnitude during the initial startup period is reduced, improving both system efficiency and stability. The effectiveness of the proposed method is verified through experimental results.</p>

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Efficient I/F Control for Single Inverter Dual Parallel Permanent Magnet Synchronous Motor Drives

  • 期刊论文

  • 发表日期：

    2026年4月13日

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  • Sang-Jun Lee,
  • Kyo-Beum Lee,
  • Sung-Joon Cho

摘要

This paper proposes an efficient I/F control method for single-inverter dual-parallel (SIDP) permanent magnet synchronous motor (PMSM) drive systems. The stability of the SIDP PMSM drive during I/F control is analyzed using root locus analysis. Conventional I/F control operates the motor at the rated current, which leads to limitations in efficiency and degraded stability during control mode transitions. To address these issues, a current reduction technique is applied by controlling the angle between the I/F reference frame and the synchronous reference frame. This approach minimizes the current magnitude and ensures stable mode transitions. As a result, the current magnitude during the initial startup period is reduced, improving both system efficiency and stability. The effectiveness of the proposed method is verified through experimental results.