Cylindrical rotor design for acoustic noise and windage loss reduction in switched reluctance motor for HEV applications

Author

Kiyota, Kyohei ; Kakishima, Takeo ; Chiba, Akira

Author_Institution

Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Tokyo, Japan

fYear

2014

fDate

14-18 Sept. 2014

Firstpage

1814

Lastpage

1821

Abstract

A Switched Reluctance Motor (SRM) is one of the candidates of rare-earth-free-motors for hybrid electric vehicle (HEV). An SRM has been developed with exact IPMSM dimensions with competitive maximum torque, operating area, and maximum efficiency. However, considered windage loss of around 1.3 kW is resulted by the salient poles of the SRM at the maximum rotational speed. In addition, considerable acoustic noise is caused by the salient poles. In this paper, a simple design of a cylindrical outer shape rotor is proposed and a comparison to the conventional rotor is carried out. It is found that the efficiency is improved thanks to the windage loss reduction. It is also found that the acoustic noise is significantly reduced.

Keywords

acoustic noise; hybrid electric vehicles; permanent magnet motors; reluctance motors; rotors; HEV; IPMSM dimensions; SRM; acoustic noise; competitive maximum torque; cylindrical outer shape rotor; cylindrical rotor design; hybrid electric vehicle; maximum efficiency; operating area; rare-earth-free-motors; salient poles; switched reluctance motor; windage loss reduction; Acoustic noise; Iron; Reluctance motors; Rotors; Stators; Stress; Torque;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2014 IEEE

Conference_Location

Pittsburgh, PA

Type

conf

DOI

10.1109/ECCE.2014.6953638

Filename

6953638