转子磁钢表贴式永磁同步电机转子初始位置检测  

Initial Rotor Position Detection of Surface Mounted Permanent Magnet Synchronous Motor

作　　者：刘颖[1] 周波[1] 李帅[1] 冯瑛[1] 

机构地区：[1]南京航空航天大学自动化学院,江苏省南京市210016

出　　处：《中国电机工程学报》2011年第18期48-54,共7页Proceedings of the CSEE

基　　金：江苏省创新学者攀登计划(BK2009019)~~

摘　　要：针对转子磁钢表贴式永磁同步电机(surface mounted permanent magnet synchronous motor,SPMSM),提出一种无位置传感器转子初始位置检测方法,有效地改善了传统方法中存在的算法执行时间长、实施复杂等缺点。该方法分2步实现,在估算的同步旋转坐标系中注入高频正弦电压信号,通过闭环调节得出转子位置初次估算值;再利用不同磁极下直轴等效电路时间常数不同的特性,判断出d轴正方向,结合初次估算值,从而得到正确的初始位置信息。运用dSPACE实时仿真系统进行了转子任意初始角度的实验验证。结果表明,所提方法能够快速、准确地检测出SPMSM的初始位置。A new method for initial rotor position detection of surface-mounted permanent magnet synchronous motor （SPMSM） without any rotational transducer is presented. The method can effectively improve the shortcomings of traditional methods in execution time and implementation complexity. It is realized in two steps. Firstly a high-frequency sinusoidal voltage signal is injected into the estimated synchronous rotating coordinate system, thus the first estimated value of rotor position can be estimated through closed-loop adjustment. Then pole polarity is determined using different time constant characteristics of d-axis equivalent circuit under different poles. Combined with the estimated value, the correct initial position can be obtained. Experimental verification of arbitrary initial rotor angle is carried out on dSPACE real-time simulation system. The results show that the proposed method can realize fast and accurate initial position detection of SPMSM.

关 键 词：永磁同步电机 无位置传感器 初始位置检测 信号注入 磁极判断 

分 类 号：TM351[电气工程—电机]