低开关频率下基于高频方波电压注入法的永磁同步电机无位置传感器控制策略  

A sensorless control strategy for PMSM based on high frequency square wave voltage injection at low switching frequency

作　　者：董士帆 蒋威 王晓帆 邱腾飞 周明磊[1] 王琛琛[1] DONG Shifan;JIANG Wei;WANG Xiaofan;QIU Tengfei;ZHOU Minglei;WANG Chenchen(School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044,China;Locomotive&Car Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;Beijing Zongheng Electro-Mechanical Technology Co.,Ltd.,Beijing 100094,China)

机构地区：[1]北京交通大学,电气工程学院,北京100044 [2]中国铁道科学研究院集团有限公司机车车辆研究所,北京100081 [3]北京纵横机电科技有限公司,北京100094

出　　处：《机车电传动》2024年第2期59-65,共7页Electric Drive for Locomotives

基　　金：中国铁道科学研究院集团有限公司基金项目(2022YJ050);台达电力电子科教发展计划(DREG2022007)。

摘　　要：文章提出了一种永磁同步电机低开关频率下利用注入的高频方波电压在低速工况下估计转子位置的方法。通过注入电压产生的q轴电流变化量获得估算转子位置误差的结论,设计龙贝格状态观测器利用q轴电流变化量估算转子位置,并给出了一种简单的龙贝格状态观测器零极点的设计方法。试验结果表明,文章所提的无位置传感器控制策略在低开关频率下估算转速与转子位置能准确跟踪真实值。This paper presents an estimation method of rotor position at low speeds for permanent magnet synchronous motors(PMSM),using a high frequency(HF)square wave voltage injection technique at a low switching frequency.This method utilized variations in q-axis current resulting from the voltage injection to estimate rotor position errors.A Luenberger state observer was incorporated to estimate rotor position based on changes in q-axis current,along with a straightforward design principle provided for the zero and pole points of the Luenberger state observer.The experimental results show that the proposed sensorless control algorithm is effective in accurately tracking actual values in the rotor speed and position estimation at low switching frequency.

关 键 词：永磁同步电机 无位置传感器控制 低开关频率 高频方波电压注入 龙贝格状态观测器 

分 类 号：TM351[电气工程—电机]