摘要
针对永磁同步电机(PMSM)传统的电感辨识方法受逆变器非线性影响的问题,该文提出一种考虑逆变器非线性影响的高频注入电感参数辨识方法。该方法在两相静止坐标系下注入高频旋转方波电压,并提出一种可抑制逆变器非线性的信号构造方法,采用该构造方法对两相静止坐标系下高频响应电流差值进行构造,得到永磁同步电机dq轴电感参数辨识信号。根据误差分析给出高频注入信号的选取方法。基于1.5kW内置式永磁同步电机(IPMSM)的实验结果表明,所研究方法能实现考虑饱和的电感参数辨识,具有收敛速度快、能够有效抑制逆变器非线性的影响、易于工程实现的优点。
The traditional inductance identification method of permanent magnet synchronous motor(PMSM)is affected by the nonlinearity of the inverter.For this reason,a high-frequency injection inductance parameter identification method considering the nonlinearity of the inverter is proposed,which injects high-frequency rotating square wave voltage in two-phase stationary coordinate system.In addition,a signal construction method that can suppress the nonlinearity of the inverter is proposed.This signal construction method is used to construct the high-frequency response current difference in the two-phase stationary coordinate system to obtain the d-q axis inductance parameter identification signals of the permanent magnet synchronous motor.According to the error analysis,the selection method of high-frequency injection signal is given.The experimental results on a 1.5kW internal permanent magnet synchronous motor(IPMSM)show that the proposed method can realize the inductance parameter identification considering the saturation effect,and has the advantages of fast convergence speed,effective suppression of inverter nonlinearity,and easy engineering implement.
作者
黄科元
周佳新
刘思美
黄守道
Huang Keyuan;Zhou Jiaxin;Liu Simei;Huang Shoudao(College of Electrical and Information Engineering,Hunan University,Changsha 410082,China)
出处
《电工技术学报》
EI
CSCD
北大核心
2021年第8期1607-1616,共10页
Transactions of China Electrotechnical Society
基金
国家自然科学基金资助项目(51777064)。
关键词
永磁同步电机
电感辨识
高频旋转方波注入
逆变器非线性
Permanent magnet synchronous motor
inductance identification
high-frequency square wave injection
inverter non-linearity
