Electromagnetic Analysis on Dual-Stator Switched Reluctance Motor

A novel structure switched reluctance motor with dual stators is presented in this paper which consists of an outer stator, an inner stator, a rotor and two airgaps. In order to maximum the electromagnetic torque of the proposed machine, sensitivity analysis on some geometric dimensions is conducted. These dimensions include pole-arc coefficient, and yoke thickness of stators and rotor. The final geometric dimensions are given in the paper. According to the positive and negative distribution of stator poles and different layouts, windings of this machine have 12 kinds of layouts which are studied in section IV. Based on the finite element calculation result, the average torque of rotor with NSNSNSNSNSNS polarity distribution of outer-stator and SNSNSN polarity distribution of inner-stator is the largest so that this connection pattern of winding is selected. Some transient simulation results are given in this paper which prove the good performance of the dual-stator switched reluctance motor.