Novel interspersed windings to reduce space flux harmonics caused by fractional-slot of synchronous machine

Author

Hiramatsu, Daisuke ; Sutrisna, K.F. ; Tokumasu, Tadashi ; Ishizuka, Hirokazu ; Okubo, Masaaki ; Tsujikawa, Kyozo ; Ueda, Toshitsugu ; Hachiya, Hiroyuki ; Aso, Teruo ; Otaka, T.

Author_Institution

Toshiba Corp., Yokohama, Japan

fYear

2013

fDate

12-15 May 2013

Firstpage

634

Lastpage

639

Abstract

Fractional-slot windings is widely used in synchronous machine due to give us more flexibility on selection of the number of slot at design stage. It is also known that fractional-slot windings produces additional harmonics compare to integral-slot windings. These harmonics may cause increasing of stray losses and stator core vibration This paper describes the result of space flux harmonics caused by fractional-slot windings and propose novel interspersed windings that reduces the even order and/or fractional number space flux harmonic components. The advantage of proposed winding was confirmed by using numerical analysis and experiment using model winding machine.

Keywords

harmonics suppression; losses; machine windings; numerical analysis; synchronous machines; vibrations; fractional number space flux harmonic components; fractional-slot winding; integral-slot windings; interspersed windings; model winding machine; numerical analysis; space flux harmonic reduction; stator core vibration; stray losses; synchronous machine; Coils; Equations; Harmonic analysis; Mathematical model; Stator cores; Vibrations; Windings; MMF; Synchronous Machine; fractional-slot; harmonic;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Machines & Drives Conference (IEMDC), 2013 IEEE International

Conference_Location

Chicago, IL

Print_ISBN

978-1-4673-4975-8

Electronic_ISBN

978-1-4673-4973-4

Type

conf

DOI

10.1109/IEMDC.2013.6556161

Filename

6556161