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A Study of Torque Characteristics of a Novel Flux Reversal Machine

The flux reversal machine (FRM) develops from the switched reluctance machine. Its magnetic line always goes the path whose reluctance is the smallest. The FRM has many advantages, such as high stability, high torque density and low loss, however, torque ripple is quite large. In order to reduce torque ripple of the FRM, a novel structure is proposed in this paper. The effect of different winding configurations on the voltage and torque ripple is discussed. Besides, the effect of the new structure compared with the traditional FRM on the cogging torque and torque ripple is analyzed too. The finite element simulation results show that the new structure has obvious effects on reducing torque ripple.