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永磁同步电机是典型的非线性多变量强耦合系统,在同步旋转坐标系下dq轴电流存在耦合,传统的PI控制器无法实现解耦,提出一种基于内模控制原理和空间矢量算法相结合的高性能永磁同步电机解耦控制方法,用内模控制策略控制理想电机模型,对定子电流交叉耦合电势动态解耦,提高系统的动态响应性能,同时在整个电流闭环过程中对参数摄动和外扰动具有良好的鲁棒性,这种方法不需要额外的电机参数和检测硬件,实验结果验证了方法有效可行。
The permanent magnet synchronous motor is a typical nonlinear multi-variable strong coupling system. Under the synchronous rotating coordinate system, the dq axis current is coupled, and the traditional PI controller can not be decoupled. Based on the internal model control theory and the space vector algorithm Combining the decoupling control method of high-performance permanent magnet synchronous motor, the internal model control strategy is used to control the ideal motor model to dynamically decouple the stator cross-current potential and improve the dynamic response of the system. In the meantime, The dynamic and external disturbances have good robustness. This method does not require additional motor parameters and detection hardware. The experimental results show that the method is effective and feasible.