Title :
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
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;
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
DOI :
10.1109/IEMDC.2013.6556161
