Abstract
This paper proposes and investigates two asymmetric consequent-pole hybrid excited flux reversal machine (AS-CP-HEFRM) topologies, which have same numbers of iron poles and permanent magnets (PMs) with concentrated AC and DC windings on each stator pole and a salient pole rotor. If PM number on one stator pole is larger than 1, PMs are magnetized radially in the same direction on one stator pole, while opposite on adjacent stator poles. The phenomenon and elimination of the phase shift between the flux linkages of DC and PM excitations in the AS-CP-HEFRMs are highlighted and verified by finite element analysis. Meanwhile, the relationship between the rotor pole number and the stator pole arc (PM ratio) is derived for maximum average torque and verified by global optimization. The influence of stator/rotor pole number combinations is also studied and compared in terms of torque, torque ripple, and flux regulation capability.
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