Open AccessTheory of symmetric winding distributions and a general method for winding MMF harmonic analysis
Author(s) -
Sun Yi,
Lin Yingqian,
Wang Yunchong,
Nilssen Robert,
Shen JianXin
Publication year - 2020
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.815
H-Index - 97
eISSN - 1751-8679
pISSN - 1751-8660
DOI - 10.1049/iet-epa.2020.0553
Subject(s) - magnetomotive force , harmonics , harmonic analysis , harmonic , electromagnetic coil , computer science , mathematics , control theory (sociology) , mathematical analysis , topology (electrical circuits) , physics , acoustics , engineering , electrical engineering , voltage , control (management) , artificial intelligence
One of the main challenges in motor design is the winding layout, including winding distributions and magnetomotive force (MMF) harmonic analysis. Considering some shortcomings in the existing theories for winding distributions and difficulties in dealing with unconventional fractional‐slot windings, a unified theory of symmetric winding distributions is proposed. First, this study gives the sufficient and necessary conditions for a m ‐phase symmetric winding and the novel winding distribution formula. Subsequently, a general method for MMF harmonic analysis including the amplitude of MMF harmonics and harmonic orders are proposed. Finally, the analysis results show that this unified theory is an efficient and compact method to deal with the winding layout to analyse all kinds of winding MMF harmonics.