永磁同步电机速度预测电流解耦控制

在高性能永磁同步电机(PMSM)控制系统中,要求有好的动、静态性能。但是传统的永磁同步电机矢量控制系统速度和电流环采用PI调节器,参数鲁棒性差,在调速范围要求很宽的情况下,无法同时满足响应速度快和稳态精度高的要求。为了获得好的动、静态性能,引入预测控制到速度控制外环,而电流内环采用在传统PI控制基础上增加电压前馈补偿的电流解耦控制。搭建了实验平台,进行了实验研究,验证了设计的控制系统具有动态响应快、静态误差小、受负载扰动影响小的特点。

PMSM control system based on speed predictive controller and current decouple controller

The traditional vector control system of permanent magnet synchronous motor (PMSM) which adopts the traditional PI controller in velocity and current loop has poor robustness and fails to achieve the requirements of quick dynamic response and high precision under the condition of wide range of motor speed. In order to achieve excellent dynamic and static performance, a new vector control system which applies speed predictive controller to the speed outer loop and the traditional PI controller including the current voltage feed forward compensation controller to the current inner loop is presented in this paper. The experimental evidences prove that the proposed predictive control system proves to be quick in dynamic response, low in static errors, and less influence with load disturbance.