Axial flux Doubly Salient Motor speed control based on fuzzy-PID control

A fuzzy-PID speed controller proposed in this paper is designed for the Doubly Salient Motor (DSM) with axial flux, which has high efficiency of rotor and power density. This paper started from the structure and mathematical model of axial flux DSM, and then analyzed its operating characteristics. Due to nonlinear functions of Flux and torque rotor position and phase current, application of linear control methods cannot meet the requirements of non-linear, variable structure and variable parameters. In order to stabilize the motor and achieve the maximum speed quickly, a fuzzy-PID speed controller utilizes the fuzzy control strategy to get tuning rules of three parameters in PID controller, comparing to very complicate conventional PID control parameters self-tuning process. Simulation results show that the fuzzy PID control is superior to the traditional PID control, which can effectively improve the response speed and interference immunity, shorten the rise time and reduce the overshoot.