Loss Analysis of Permanent Magnet Synchronous Machines by Considering Circulating Currents of Armature Windings

In this paper, we investigate the losses caused by circulating currents generated in armature windings of permanent magnet synchronous machines by using electromagnetic field analysis. In the analysis, each parallel connected wire in the windings is modeled by finite elements in order to consider th...

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Bibliographic Details
Published inIEEJ JOURNAL OF INDUSTRY APPLICATIONS Vol. 138; no. 6; p. 553
Main Authors Yamazaki, Katsumi, Yui, Haiyan, Ohguchi, Hideki, Shuto, Masao
Format Journal Article
LanguageEnglish
Japanese
Published Tokyo Japan Science and Technology Agency 2018
Subjects
Coils (windings)
Copper loss
Electromagnetic fields
Electromotive forces
Magnetism
Parallel connected
Permanent magnets
Synchronous machines
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Summary:In this paper, we investigate the losses caused by circulating currents generated in armature windings of permanent magnet synchronous machines by using electromagnetic field analysis. In the analysis, each parallel connected wire in the windings is modeled by finite elements in order to consider the difference in the electromotive forces and the generation of the circulating currents. The calculated losses are compared with experimental results. It is clarified that the armature copper loss in permanent magnet machines with parallel connected wires considerably increases by the circulating currents.
ISSN:2187-1094
2187-1108
DOI:10.1541/ieejias.138.553