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The on-load magnetization characteristics of a novel partitioned stator switched flux hybrid magnet memory machine (PS-SF-HMMM) are comprehensively analyzed in this paper. Firstly, the on-load demagnetization behavior of the proposed machine is disclosed by the frozen permeability method. Then, a virtual linear hysteresis model (VLHM) for low coercive force (LCF) magnet is presented in order to identify...
Memory machines (MMs) equipped with hybrid permanent magnets (PMs), i.e., NdFeB and low coercive force (LCF) PMs, combine the merits of acceptable torque capability at low speeds and efficiency improvement at high speeds. Meanwhile, the PM flux linkage can be flexibly adjusted with the aid of current pulses, which is desirable for variable speed applications. To effectively extend the constant power...
The memory machine concept is recently extended to switched-flux (SF) machines, forming a series of SF hybrid magnet memory machines (SF-HMMMs). They exhibit the merits of good demagnetization withstand capability and effective flux adjustability. Nevertheless, the torque density is inevitably compromised due to the geometric conflict within the stationary part. Meanwhile, the inactivated dc coil,...
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