关键词: 永磁发电机, 永磁体涡流损耗, 电流谐波

Abstract:

Eddy-current loss in permanent magnet(PM) is an important indicator to ensure the limit of temperature rise and the performance of PMs. The impact of the slot-pole combination, the length of air gap, the width of slop opening and the pole arc coefficient on eddy-current loss of PM under no-load and load conditions was analyzed based on the finite element method by designing a outer-rotor permanent magnet synchronous generator with surface-mounted PMs. In particular, the effect of harmonic component of current in stator on eddy-current loss of PMs was studied. The results are of certain guiding significance to reduce eddy-current loss of PMs.

Key words: PM generator, eddy-current loss of PM, harmonic component of current