彭飞, 董影, 周佳新, 姚宇, 黄允凯. 双频永磁电机驱动器的共模环流抑制方法[J]. 中国电机工程学报, 2025, 45(1): 309-318. DOI: 10.13334/j.0258-8013.pcsee.232205
引用本文: 彭飞, 董影, 周佳新, 姚宇, 黄允凯. 双频永磁电机驱动器的共模环流抑制方法[J]. 中国电机工程学报, 2025, 45(1): 309-318. DOI: 10.13334/j.0258-8013.pcsee.232205
PENG Fei, DONG Ying, ZHOU Jiaxin, YU Yao, HUANG Yunkai. Common Mode Circulation Current Suppression Method for Dual Frequency Permanent Magnet Motor Driver[J]. Proceedings of the CSEE, 2025, 45(1): 309-318. DOI: 10.13334/j.0258-8013.pcsee.232205
Citation: PENG Fei, DONG Ying, ZHOU Jiaxin, YU Yao, HUANG Yunkai. Common Mode Circulation Current Suppression Method for Dual Frequency Permanent Magnet Motor Driver[J]. Proceedings of the CSEE, 2025, 45(1): 309-318. DOI: 10.13334/j.0258-8013.pcsee.232205

双频永磁电机驱动器的共模环流抑制方法

Common Mode Circulation Current Suppression Method for Dual Frequency Permanent Magnet Motor Driver

  • 摘要: 永磁同步电机正往高速化、高压化的方向发展,这会导致电机电流的开关纹波增大、电机损耗增加。然而,考虑到大功率电机驱动器的开关损耗,无法通过直接提高开关频率的方式降低开关纹波。双频永磁电机驱动器可以有效解决大功率和高开关频率之间的矛盾。为了抑制双频逆变器内部的共模环流,降低高频逆变器的容量需求,对共模环流产生的原因进行详细的分析,并提出一种共模环流抑制方法,通过在高频逆变器的输出电压中注入零轴分量,有效降低共模环流,从而减小功率器件的容量和损耗。通过仿真和实验,详细地验证所提方法的有效性。

     

    Abstract: Permanent magnet synchronous motor (PMSM) is developing with the trend of high-speed and high-voltage, which will lead to the increase of the switching ripple in the motor current, resulting in the increase of the motor loss. However, considering the switching loss of the high-power motor driver, the switching ripple cannot be reduced by directly increasing the switching frequency. Dual-frequency permanent magnet motor drivers can efficiently solve the contradiction between high-power and high-switching-frequency. In order to suppress the common-mode circulation current inside the dual-frequency inverter and reduce the capacity requirement of the high-frequency inverter, this paper proposes a common-mode circulation current suppression method. By injecting the zero-axis component into the output voltage of the high-frequency inverter, the common-mode circulation current of the dual-frequency inverter is effectively reduced, so as to reduce the capacity and loss of the power device. Through simulation and experiment, the effectiveness of the proposed method is verified in detail.

     

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