Permanent-Magnet Shape Optimization Effects on Synchronous Motor Performance

Author

Laskaris, Konstantinos I. ; Kladas, Antonios G.

Author_Institution

Dept. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Athens, Greece

Volume

58

Issue

9

fYear

2011

Firstpage

3776

Lastpage

3783

Abstract

The magnet shape in permanent-magnet (PM) synchronous motors substantially affects the back-electromotive-force (EMF) waveform and the stator iron losses, which are of particular importance in traction applications, where the energy available in the battery box is limited. This paper presents a methodology based on geometry optimization, providing sinusoidal back-EMF waveform. The method has been applied in a surface PM motor case for electric vehicle, and its validity has been checked by measurements on two prototypes, the first one with constant magnet width and the second one with optimized magnet shape.

Keywords

finite element analysis; geometric programming; permanent magnet motors; synchronous motors; back-EMF waveform; back-electromotive-force waveform; electric vehicle; geometry optimization; permanent-magnet shape optimization effects; permanent-magnet synchronous motors; stator iron losses; surface PM motor; traction applications; Electric vehicles; Finite element methods; Magnetic cores; Magnetic flux; Permanent magnet motors; Torque; Finite-element methods (FEMs); PM shape optimization; geometry optimization; iron losses; permanent-magnet (PM) motors; power density; sinusoidal back electromotive force (EMF);

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/TIE.2010.2093481

Filename

5639049