Performance Analysis of Outer Rotor Flux Reversal Machine at Different Rotor Poles

Research on flux reversal machine is taking importance day by day because of its unique characteristics. This research through light over different performance of flux reversal machine like three-phase flux linkage, cogging torque, back EMF, average torque, self, and mutual inductance. Moreover, average torque vs stack length and torque ripple is analyzed at different rotor pole and noticed a tremendous shift in performance with changing the number of magnet pairs per pole and observed that two-pairs (4-PM) of PM per pole gives the best result then a pair (2-PM) of PM per pole. All the analysis is done under the same condition, parameters, and materials. As a result, it is concluded that 10-pole model gives higher torque density and better average torque, but with high spicks then 11,13 and 17-pole model. In terms of average torque, the 10-pole model is dominant overall with 3.30Nm (17.097%) higher than 13-pole model, followed by 11-pole model with average torque value of 2.656Nm, while the 17-pole model produce the lowest average torque but spike less. At the end average torque is briefly discussed with respect to current density and stack length.