Design Method for Ultralightweight Motor Using Magnetic Resonance Coupling and its Characteristics

Abstract

In this paper, we propose a design method for a novel motor using magnetic resonance coupling (MRC) to enable the practical use of electric aircraft. The proposed motor can transfer electrical energy between a stator and a rotor via MRC, which does not require magnetic cores, thus realizing an ultralightweight design. Moreover, we detail the operating characteristics of the proposed motor and its equivalent circuit, analysis, and experiments. From the analysis, we clarify that the proposed MRC motor has a sufficient strength at an ultrahigh speed, and we describe its essential characteristics and the usefulness of its equivalent circuit. Further, our analytical and experimental results confirm that the proposed MRC motor can transfer electrical energy between a stator and a rotor, thereby generating torque.