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In the field of rail transit traction, to overcome the defects of high harmonics, large switching stress, and uneven losses in traditional NPC three-level converters, this paper proposes the use of an active neutral point clamping (ANPC) three-level converter to drive a permanent magnet synchronous motor (PMSM). The system combines field-oriented control (FOC) to achieve motor decoupling and employs a space vector pulse width modulation (SVPWM) strategy. To address the midpoint potential balancing issue in the ANPC topology, an innovative zero-sequence voltage injection method is introduced for optimized control.

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PMSM Optimized Control for Neutral-Point Voltage Balance of ANPC Three-Level Inverter

  • 会议论文

  • 发表日期：

    2026年

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  • Xincheng Zhou,
  • Zhaoshuo Wu,
  • Zixiao Li,
  • Zhen Li,
  • Yuwen Qi,
  • Lei Wang,
  • Lijun Diao

摘要

In the field of rail transit traction, to overcome the defects of high harmonics, large switching stress, and uneven losses in traditional NPC three-level converters, this paper proposes the use of an active neutral point clamping (ANPC) three-level converter to drive a permanent magnet synchronous motor (PMSM). The system combines field-oriented control (FOC) to achieve motor decoupling and employs a space vector pulse width modulation (SVPWM) strategy. To address the midpoint potential balancing issue in the ANPC topology, an innovative zero-sequence voltage injection method is introduced for optimized control.