The multiphase induction motor (MIM) suffers the problems of unsmoothness and slow dynamic response during the process of electronic pole-changing. To solve this issue, a cosine-response strategy based on proportional resonance (PR) current controller is proposed. Firstly, a current switching strategy with cosine-response is designed, which makes the MIM work more smoothly while switching between two planes. Then, the PR controller based on static coordinate system is adopted to replace the traditional proportional integral current loop controller, which realizes the zero steady-state error tracking of the current and improves MIM’s dynamic response. Experiments on a five-phase induction motor verify that the proposed strategy can reduce the fluctuations of the torque, speed, and total harmonic distortion of phase current. Besides, it can improve the dynamic response of the torque and speed when the pole-changing is switched.

多相感应电机(MIM)在电子变极过程中存在不平滑和动态响应慢的问题。为了解决这个问题，提出了一种基于比例谐振（PR）电流控制器的余弦响应策略。首先，设计了一种余弦响应的电流切换策略，使MIM在两个平面之间切换时工作更顺畅。然后，采用基于静态坐标系的PR控制器代替传统的比例积分电流环控制器，实现了电流的零稳态误差跟踪，提高了MIM的动态响应。五相感应电机的实验验证了所提出的策略可以减少相电流的转矩、速度和总谐波失真的波动。除了，