摘要
组合信号注入法分2步执行,首先通过脉振高频电压信号注入法辨识出永磁同步电机转子初始位置,然后通过脉冲电压信号注入法判断转子磁极极性。若电流谐波较大,易导致转子磁极方向误判断,极性辨识结果可靠性受到严重影响,进而导致转子启动,发生反转,无法满足部分工业应用场景要求的无反转启动。基于此,提出基于评价函数的磁极极性判断方法,提高磁极极性判断准确率。
The combined signal injection method was implemented in two steps.Firstly,the initial position of the permanent magnet synchronous motor(PMSM)rotor was identified by the pulse high frequency voltage signal injection method,and then the magnetic polarity of the rotor was detected by the pulse voltage signal injection method.If the current ripple is large,it will easily lead to the misjudgement of the magnetic pole direction of the rotor,and the reliability of the polarity identification results will be seriously affected,which will lead to the start-up of the rotor and the reversal of the rotor,which can not meet the requirements of some industrial application scenarios when no reverse start.Based on this,a magnetic polarity judgment method based on evaluation function was proposed to improve the accuracy of magnetic polarity judgment.
作者
郑浩
孙伟
ZHENG Hao;SUN Wei(ICARE,Huazhong University of Science and Technology,Wuhan 430074,Hubei,China)
出处
《电气传动》
北大核心
2020年第6期92-97,共6页
Electric Drive
基金
湖北省技术创新重大专项(2017AAA130)。
关键词
脉振高频电压信号注入
电压脉冲注入
转子磁极极性辨识
可靠性
fluctuating high frequency voltage signal injection
voltage pulse injection
rotor polarity identification
reliability
