基于跟踪微分器的PMSM死区补偿策略

微特电机 ›› 2022, Vol. 50 ›› Issue (2): 41-46.

基于跟踪微分器的PMSM死区补偿策略

李有光, 谭秀菲

南京航空航天大学,南京 210016

收稿日期:2021-11-11 出版日期:2022-02-28 发布日期:2022-02-25
作者简介:李有光(1975—),男,博士,讲师,主要从事航天器结构与机构、动力学、精密驱动与控制技术研究。谭秀菲(1995—),男,硕士。

Dead-Time Compensation Method for PMSM Based on Tracking Differentiator

LI Youguang, TAN Xiufei

Nanjing University of Aeronautics and Astronautics,Nanjing 210016, China

Received:2021-11-11 Online:2022-02-28 Published:2022-02-25

摘要/Abstract

摘要： 针对三相逆变器死区效应导致PMSM电流畸变的问题,对死区效应产生的原因进行了详细分析,得到了死区电压计算公式,并提出了一种基于跟踪微分器的死区补偿策略。应用跟踪微分器构建带有相位补偿的滤波器对PMSM的d,q轴电流进行滤波。将其反变换到三相静止坐标系下,得到正确的相电流极性。计算死区电压,并进行死区补偿。仿真及实验结果可知,基于跟踪微分器的死区补偿策略能有效滤除电流噪声,解决由于死区效应引起的电流畸变的问题。

关键词: 永磁同步电机, 死区效应, 死区补偿, SVPWM, 跟踪微分器

Abstract: An effective approach for dead-time compensation of three-phase inverter based on tracking differentiator was presented.The causes of dead-time effect were analyzed and the calculation formula were obtained.The tracking differentiator was used to construct a filter with phase compensation to filter the d,q current of PMSM.the d,q current was inversely transformed into the three-phase stationary coordinate system to obtain the correct phase current polarity.The dead time voltage was calculated and the dead-time compensation was carried out. Simulation and experimental results show that this method can effectively filter the current noise and solve the distortion of current caused by dead-time effect.

Key words: permanent magnet synchronous motor(PMSM), dead-time effect, dead-time compensation, SVPWM, tracking differentiator(TD)

中图分类号:

TM351
TM464

李有光, 谭秀菲. 基于跟踪微分器的PMSM死区补偿策略[J]. 微特电机, 2022, 50(2): 41-46.

LI Youguang, TAN Xiufei. Dead-Time Compensation Method for PMSM Based on Tracking Differentiator[J]. Small & Special Electrical Machines, 2022, 50(2): 41-46.

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