基于脉振高频电流注入法的SPMSM初始位置检测方法  

Initial Rotor Position Detection Method of SPMSM Based on High Frequency Current Injection Method

作　　者：陈建松[1] 柏文杰[1] 周融[1] 刘丽东[2] 刘兵[3] 魏佳丹[3] 

机构地区：[1]南京出入境检验检疫局,南京211106 [2]中国合格评定国家认可中心,北京100062 [3]南京航空航天大学电气工程系,南京211106

出　　处：《电气工程学报》2017年第4期45-50,共6页Journal of Electrical Engineering

基　　金：国家质量监督检验检疫总局科技计划项目(2015IK147)资助

摘　　要：采用脉振高频电流注入法进行表贴式永磁同步电机初始位置估计时需进行磁极判断,针对传统的注入正负脉冲电压的方法存在转子抖动、检测时间长等问题,提出了一种分区间积分的方法,将一个注入信号周期均匀分割成四个区间,在区间Ⅰ和Ⅲ内对d轴高频电压响应进行积分,根据积分值的符号判断d轴正方向,该方法无需额外注入正负脉冲信号判断d轴正方向,缩短了估计时间,简化了估计过程,避免了小惯量电机在注入正负脉冲电压时可能导致的转子抖动问题,拓宽了应用范围。理论分析、仿真和实验结果均验证了该方法的正确性。In the paper, the high frequency sinusoidal current injection method is used to detect the initial rotor position. When a high frequency current is injected into d-axis, the saturation of magnetic field in d-axis can lead to high frequency voltage response. A detailed analysis on the convergence of initial rotor position is given. To solve the problems such as rotor jitter, long testing time, which is introduced by the traditional method of injecting negative and positive pulse voltage, a new polarity detection is proposed. A signal injection cycle is divided into four interval and the d-axis direction is determined by the sign of the integral value of high frequency voltage response in interval of I and III. This method does not need additional injection of positive and negative pulse signal to determine d-axis direction, shortens the time estimates, simplifies the estimation process, avoids the rotor small vibration problem when injecting positive and negative pulse voltage. The theory analysis, simulation and experimental results validate the effectives of the method.

关 键 词：SPMSM 高频电流注入 磁极判断 初始位置检测 

分 类 号：TM351[电气工程—电机]