Influence of magnet eddy current on magnetization characteristics of variable flux memory machine | Zendy

Hui Yang | Zendy; Heyun Lin | Zendy; Z. Q. Zhu | Zendy; Shukang Lyu | Zendy

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Influence of magnet eddy current on magnetization characteristics of variable flux memory machine

Author(s) -

Hui Yang,

Heyun Lin,

Z. Q. Zhu,

Shukang Lyu

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.5007785

Subject(s) - demagnetizing field , eddy current , magnet , current (fluid) , eddy current brake , hysteresis , magnetic flux , mechanics , magnetic hysteresis , flux (metallurgy) , magnetization , materials science , nuclear magnetic resonance , physics , condensed matter physics , mechanical engineering , magnetic field , engineering , thermodynamics , metallurgy , quantum mechanics

In this paper, the magnet eddy current characteristics of a newly developed variable flux memory machine (VFMM) is investigated. Firstly, the machine structure, non-linear hysteresis characteristics and eddy current modeling of low coercive force magnet are described, respectively. Besides, the PM eddy current behaviors when applying the demagnetizing current pulses are unveiled and investigated. The mismatch of the required demagnetization currents between the cases with or without considering the magnet eddy current is identified. In addition, the influences of the magnet eddy current on the demagnetization effect of VFMM are analyzed. Finally, a prototype is manufactured and tested to verify the theoretical analyses.

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