基于无位置传感器的永磁电机控制技术综述

永磁同步电动机由于其固有的优点, 得到了广泛的应用。本文讨论了永磁同步电动机调速系统中广泛采用的无位置传感器技术。无位置传感器可以分为两大类: 基于电磁关系和基于各种观测器技术的无位置传感器技术, 目前主要的工作是提高调速精度和鲁棒性以及改善低速段的系统性能。
关键词: 永磁同步电动机; 无位置传感器; 控制技术
Abstract: Because of its inherent merit, the permanent - magnet synch ronous mo to r is w idely used. Th is paper discus the mechanical - senso rless techniques, w h ich are w idely used in the permanent - magnet synch ronous mo to r speed cont ro l system. There are two k inds of mechanical- senso rless techniques: the techniques based on elect romagnet ism relat ion and all k inds of observers. Today’s wo rk is to imp rove the p recision of the velocity
modulat ion and the robustness as w ell as the perfo rmance of the system in low speed region.
Key words: permanent- magnet synch ronousmo to r; mechanical- senso rless; cont ro l techniques