Abstract

In this paper, a new hybrid-structure machine, namely magnetic-geared memory (MGM) machine, is proposed. It artfully integrates the magnetic-gearing effect and flux-mnemonic capability together. The design is to adopt the hybrid-structure which incorporates the flux-modulation ring, dual-magnets and magnetizing winding. In this way, the flux-modulation ring is able to modulate the high-speed armature rotating field to the low-speed permanent magnet (PM) rotor. Meanwhile, the electromagnetic field which is generated by the dual-magnets of NdFeB and AlNiCo can be online tuned by the magnetizing winding. Thus, the proposed machine achieves the merits of both high-torque production and wide-speed operation. Finite element analysis is employed to verify the validity of the proposed MGM machine. Also, a parallelogram hysteresis model is built for the AlNiCo PM.

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