Adaptive PI Parameter of Flux-Weakening Controller Based on Voltage Feedback for Model Predictive Control of SPMSM

The traditional flux-weakening control of the surface permanent magnet synchronous motor (SPMSM) is mainly based on the vector control method. However, this method needs two speed loop PI controllers, two current loop PI controllers and a flux-weakening PI controller, which needs to adjust too many parameters in the entire system. This paper combined flux-weakening control method and model predictive current control (MPCC), in order to remove the current loop PI controller and reduce debugging parameters. In addition, the traditional flux-weakening method use fixed control parameters, which cannot take into account both dynamic and steady state performance, and is very difficult to debug. Therefore, this paper proposes a method of adaptive field weakening controller based on voltage feedback, which can make the parameters of the controller change with the change of speed to improve the dynamic and stable performance. Simulation and experimental results prove the effectiveness of the proposed method.