Research on control strategy of a novel axial doubly salient electro-magnetic machine

This paper presents a novel axial doubly salient electro-magnetic machine with a new double sets of stator structure based on the traditional permanent magnet brushless DC motor and the switched reluctance motor. A new external control circuit is designed according to the special structure and working mechanism of the motor. And according to the electromagnetic characteristics in different conditions by three-dimensional finite element method, double-loop PID control strategy is used for the system. Simulation and experiment have verified the correctness of the analysis. The results indicate that the machine in this control strategy can run stably. It has high starting torque, small torque ripple, good speed expansion capability and favorable field-control performance.