Theory of symmetric winding distributions and a general method for winding MMF harmonic analysis. Issue 13 (26th January 2021)

• Record Type: Journal Article
• Authors: Sun, Yi; Lin, Yingqian; Wang, Yunchong; Nilssen, Robert; Shen, Jian‐Xin
• Is Part Of: IET electric power applications. Volume 14:Issue 13(2020)
• Page Start: 2587
• Page End: 2597
• Publication Date: 2021-01-26
• Subjects: permanent magnet machines -- harmonic analysis -- finite element analysis -- machine windings -- permanent magnet motors; winding MMF harmonics -- symmetric winding distributions -- MMF harmonic analysis -- winding layout -- magnetomotive force harmonic analysis -- fractional‐slot windings -- unified theory -- m‐phase symmetric winding -- novel winding distribution formula -- harmonic orders; Electric power -- Periodicals; Electric power systems -- Periodicals; 621.305
• DOI: 10.1049/iet-epa.2020.0553
• Languages: English
• ISSNs: 1751-8660

Abstract

Abstract : 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.