本文基于同步軸系下的感應(yīng)電動機電壓磁鏈方程式，提出了一種感應(yīng)電動機轉(zhuǎn)子磁場定向的矢量控制方法，利用在同步軸系中q 軸電流的誤差信號實現(xiàn)對電機速度的估算。在該無傳感器矢量控制系統(tǒng)中，由于采用了經(jīng)典的PI 調(diào)節(jié)器，使得控制系統(tǒng)更為簡單。最后利用MATLAB 建立的該無傳感器矢量控制系統(tǒng)的仿真模型，通過仿真驗證了本文所提出的無傳感器矢量控制系統(tǒng)具有良好的動態(tài)和靜態(tài)性能。
關(guān)鍵詞：感應(yīng)電動機無傳感器矢量控制速度估算
Abstract: Based on the synchronous reference frame, the voltage equations in terms of flux linkage of induction motor was deduced in this paper, a vector-controlled approach based on the rotor field orientation control was proposed as well. Error signal of the stator q-axis current in the synchronous reference frame was utilized to attain the induction motor speed. Because classical PI controllers was used, the structure of the sensorless vector control was very simple. Simulation results based on MATLAB 6.1 demonstrate that the proposed vector control scheme is valid, and the dynamic and static performance are quit well.
Keywords:Induction motor Sensorless vector control Speed estimation