基于高频方波注入的永磁同步电机转矩脉动抑制策略  

Torque Ripple Suppression Strategy for Permanent Magnet Synchronous Motor Based on High Frequency Square Wave Injection

作　　者：宋金星 张倩[1,2] 叶超 王群京[1,4] 符梦虎 杨衡 SONG Jin-xing;ZHANG Qian;YE Chao;WANG Qun-jing;FU Meng-hu;YANG Heng(School of Electrical Engineering and Automation,Anhui University,Hefei 230601,China;National Engineering Laboratory of Energy-saving Motor&Control Technology(Anhui University),Hefei 230601,China;The 38th Research Institute of CETC,Hefei 230601,China;Power Quality Engineering Research Center,Ministry of Education(Anhui University),Hefei 230601,China)

机构地区：[1]安徽大学电气工程及自动化学院,合肥230601 [2]高节能电机及控制技术国家地方联合实验室(安徽大学),合肥230601 [3]中国电子科技集团第三十八研究所,合肥230601 [4]教育部电能质量工程研究中心(安徽大学),合肥230601

出　　处：《科学技术与工程》2023年第18期7779-7786,共8页Science Technology and Engineering

基　　金：国家自然科学基金(52077001)。

摘　　要：传统的高频方波注入法,利用转子的饱和凸极效应,可提升转速控制精度,但该方法也导致电流中含有大量的谐波而产生畸变,对电机的转矩脉动产生负面影响。在传统高频方波注入法的基础上,通过谐波电流抑制算法,利用坐标变换及低通滤波器采集出5、7次电流谐波分量,将采集的数据经过谐波电压补偿。提出了一种谐波抑制高频注入的方法。该方法消除电机工作中电流谐波分量,达到抑制转矩脉动的目的。仿真和实验结果表明了该算法可以有效地抑制定子电流的畸变,降低转矩脉动,且具有较高的灵活性。The traditional high-frequency square wave injection method can improve the speed control accuracy via the saturated saliency effect of the rotor.But the distortion is also caused by this method because of the current containing a large number of harmonics.There is a negative impact on the torque ripple of the motor.Through the harmonic current suppression algorithm,the 5th and 7th current harmonic components were collected by coordinate transformation and low-pass filter,and the collected data was subjected to harmonic voltage compensation.A harmonic suppression high frequency injection method was proposed.The harmonic current component was eliminated by the proposed method in the motor operation,and the purpose of suppressing the torque ripple was achieved.Simulation and experimental results show that the algorithm can effectively suppress the distortion of stator current,reduce torque ripple,and has high flexibility.

关 键 词：永磁同步电机 谐波电压补偿 谐波电流抑制 转矩脉动 

分 类 号：TM351[电气工程—电机]