Calculation methods of equivalent circuit parameters for a dual stator solid rotor axial flux induction motor

Abstract

This study proposes a novel dual stator solid rotor axial flux induction motor (DSSRAFIM) for flywheel energy storage system and the computational methods for its equivalent circuit parameters. The quasi-one-dimensional theory and the penetration depth method assume that the electromagnetic field distribution in the solid rotor is uniformly distributed, and they are appropriate for optimal design. The multi-layer method takes the non-linear permeability of the solid rotor into account, and it reduces the computational effort by simplifying the complicated computation into a transfer matrix. The two-dimensional finite element method and the three-dimensional finite element method can provide very accurate results, but they spend a large amount of computational effort. All these methods are improved, so that they are applicable to the DSSRAFIM. Also, these methods are verified by experimental test.