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
董士帆 1蒋威 2王晓帆 2邱腾飞 2周明磊 1王琛琛1
作者信息
- 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;北京纵横机电科技有限公司,北京 100094
- 折叠
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.
Abstract
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 varia-tions 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 accu-rately 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Key words
permanent magnet synchronous motor(PMSM)/sensorless control/low switching frequency/high frequency(HF)square wave voltage injection/Luenberger state observer引用本文复制引用
基金项目
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)
出版年
2024
NETL
NSTL
万方数据