Novel rotor design for high-speed flux reversal motor

A single-phase Flux Reversal Machine for high speed applications has a reliable rotor and a good specific power. This paper shows that eliminating the regions of negative torque of this machine can be reached if an asymmetric rotor is used. This machine with an asymmetric rotor was compared with that with a symmetric rotor. In the rated loading mode, the calculated torque ripple of the flux reversal machine with the symmetric rotor is 297%, while that of the one with the asymmetric rotor is 185% which is less by 1.6 times. The proposed high-speed flux reversal machine with the asymmetric rotor can be applied in low-cost drives of household appliances (vacuum cleaners, hand dryers, blenders, washing machines) and in electric power hand tools (angular grinders, miter saws, drills) to replace single-phase synchronous motors or single-phase Hybrid Switched Reluctance Motors. (C) 2020 The Author(s). Published by Elsevier Ltd.