永磁同步电机的无差拍电流预测控制

A Deadbeat Current Predictive Control for Permanent Magnet Synchronous Motor

传统磁场定向控制在同步旋转坐标系下使用PI调节器对电机的直交轴电流分别进行控制,存在PI参数整定复杂,电流动态响应较慢等缺点。为了提高电机电流的动态性能,介绍一种无差拍的预测电流控制算法。首先介绍无差拍电流预测算法,推导出永磁同步电机的预测控制模型,然后对算法的稳定性进行分析,得出算法的稳定区间,采用一种鲁棒控制方法使得该控制算法在电机参数误差时也能大范围稳定,最后通过仿真对该算法进行验证。

Traditional field oriented control uses PI regulator to control motor quadrature and direct axis current respectively under the synchronous rotating coordinate system, the shortcomings are complex PI parameter setting and slow current dynamic response. In order to improve the dynamic performance of motor current control, this paper introduced a deadbeat predictive current control algorithm. The theory of deadbeat current prediction algorithm was introduced, and a predictive control model of permanent magnet synchronous motor was deduced. The stability of the algorithm was analyzed, and a robust control method was introduced to make the control algorithm stable over a wide range with motor parameter error. Finally, the algorithm was validated by simulations.