天津工业大学学报2025，Vol.44Issue(2)：63-71,9.DOI:10.3969/j.issn.1671-024x.2025.02.009
基于改进电流平均值法的PMSM谐波电流抑制策略
Harmonic current suppression strategy of PMSM based on improved average current method
摘要
Abstract
Aiming at the issue that the harmonic current extraction methods based on low-pass filters and current average value methods in traditional permanent magnet synchronous motor(PMSM)harmonic current suppression algo-rithms cannot balance the extraction accuracy of harmonic currents and the dynamic response speed,an im-proved current average value method for harmonic current extraction is proposed.The harmonic current signal is transformed into multiple rotating coordinate systems,and then filtered successively through a low-pass filter and a current average value algorithm module,thereby ensuring the accuracy of harmonic current extraction while accelerating the dynamic response speed of the extraction.The proposed current extraction method is combined with the current PI control strategy,and the effectiveness of the proposed method is verified through simulation analysis.The results show that under three typical speeds of 500,1 500,and 3 000 r/min,the total harmonic distortion(THD)of the stator current is reduced from 11.54％,8.14％,and 8.25％to 6.84％,4.45％,and 5.66％respectively before and after using the proposed method,achieving effective suppression of the 5th and 7th harmonic currents of the PMSM.关键词
永磁同步电机/谐波电流提取/谐波电流抑制/低通滤波器/电流平均值法Key words
permanent magnet synchronous motor/harmonic current extraction/harmonic current suppression/low-pass filter/average current method分类
动力与电气工程引用本文复制引用
谷鑫,马兰港,李奕旸,金雪峰..基于改进电流平均值法的PMSM谐波电流抑制策略[J].天津工业大学学报,2025,44(2):63-71,9.基金项目
国家自然科学基金项目(52177055) （52177055）
