三级式无刷同步电机转子初始位置估算方法  

Initial rotor position estimation of three-stage brushless synchronous motors

作　　者：毛帅[1] 刘卫国[1] 马鹏[1] 彭纪昌[1] 

机构地区：[1]西北工业大学自动化学院,陕西西安710072

出　　处：《中南大学学报（自然科学版）》2016年第11期3685-3691,共7页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(51277152)~~

摘　　要：提出一种三级式无刷同步电机在无位置传感器并且静止的情况下转子初始位置的估算方法。该方法首先利用三级式无刷同步电机主发电机定子铁心的饱和特性,通过给主发电机定子施加特定方向的电压空间矢量,检测并比较相应的定子电流来预估1个转子的初始位置。然后,利用预估的转子初始位置对主发电机定子电流进行造型,通过高斯曲线拟合估算转子初始位置。实验结果表明:转子初始位置的估算精度在0.5°电角度以内。A method of estimating the initial rotor position of a three-stage brushless synchronous motor at standstill without any position sensors was presented. Based on the magnetic saturation characteristics of the stator core, the preliminary initial rotor position of the machine was estimated by applying specified voltage vectors to the main generator and comparing the stator current values. Then, the stator current values were modeled using the preliminary initial rotor position information and Gaussian curve fitting was performed. The results show that the standstill rotor position is within 0.5°; in electrical angle.

关 键 词：三级式无刷同步电机 无位置传感器 静止 转子初始位置 高斯曲线拟合 

分 类 号：TM341[电气工程—电机]