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

DONG Shifan; JIANG Wei; WANG Xiaofan; QIU Tengfei; ZHOU Minglei; WANG Chenchen

doi:10.13890/j.issn.1000-128X.2024.02.007

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

Converting and Control | 更新时间：2024-08-02

- A sensorless control strategy for PMSM based on high frequency square wave voltage injection at low switching frequency
- Electric Drive for Locomotives Issue 2, Pages: 59-65(2024)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128X.2024.02.007
  CLC： TM351
- Published：10 March 2024，
  
  Received：08 December 2023，
  
  Revised：01 March 2024，
- 稿件说明：
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董士帆, 蒋威, 王晓帆, 等. 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[J]. 机车电传动, 2024(2): 59-65.

DONG Shifan, JIANG Wei, WANG Xiaofan, et al. A sensorless control strategy for PMSM based on high frequency square wave voltage injection at low switching frequency[J]. Electric drive for locomotives,2024(2): 59-65.
董士帆, 蒋威, 王晓帆, 等. 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[J]. 机车电传动, 2024(2): 59-65. DOI：10.13890/j.issn.1000-128X.2024.02.007.

DONG Shifan, JIANG Wei, WANG Xiaofan, et al. A sensorless control strategy for PMSM based on high frequency square wave voltage injection at low switching frequency[J]. Electric drive for locomotives,2024(2): 59-65. DOI：10.13890/j.issn.1000-128X.2024.02.007.

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

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

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 variations in

-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

-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

Keywords

permanent magnet synchronous motor (PMSM)sensorless controllow switching frequencyhigh frequency (HF) square wave voltage injectionLuenberger state observer

references

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