基于無位置傳感器的永磁電機控制技術(shù)綜述

永磁同步電動機由于其固有的優(yōu)點, 得到了廣泛的應(yīng)用。本文討論了永磁同步電動機調(diào)速系統(tǒng)中廣泛采用的無位置傳感器技術(shù)。無位置傳感器可以分為兩大類: 基于電磁關(guān)系和基于各種觀測器技術(shù)的無位置傳感器技術(shù), 目前主要的工作是提高調(diào)速精度和魯棒性以及改善低速段的系統(tǒng)性能。
關(guān)鍵詞: 永磁同步電動機; 無位置傳感器; 控制技術(shù)
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