磁通切换型定子永磁电机的建模与线性自抗扰控制

Modeling and linear active-disturbance-rejection control of flux-switching stator permanent magnet motor

磁通切换型永磁(FSPM)电机是一种新型的定子永磁型无刷电机,在制造业及航海等领域具有很好的应用前景。FSPM电机的高性能控制具有很大的难度。在分析这种电机工作原理的基础上,建立了其在定子坐标系和转子旋转坐标系下的数学模型。采用电流滞环的PWM控制策略,并将线性自抗扰控制器(LADRC)引入到其调速系统中。稳态和动态仿真结果表明,采用LADRC的磁通切换永磁电机比采用PI控制的调速系统具有更好的启动特性,并在转速突变和突加负载扰动时具有更强的鲁棒性。

Flux-switching permanent magnet(FSPM)motor is a new type of stator permanent magnet brushless motor.It has good prospects for application in the manufacturing industry and navigation.However,it is very difficult to realize high-performance control of FSPM motors.In this study,based on an analysis of the working principle of this type of motor,mathematical models are established for the stator coordinate system and the rotor rotating coordinate system.The current-hysteresis PWM control strategy is adopted,and the linear active-disturbance-rejection controller(LADRC)is introduced into the speed control system of this paper.The steady-state and dynamic-state simulation results show that the FSPM with LADRC has better starting characteristics than the PI-controlled speed regulation system.In addition,the proposed system is more robust to mutation of rotation speed and sudden exertion of load disturbance.