Analytical determination of optimal split ratio for interior permanent magnet synchronous motor

Author

Yu Chen ; Ronghai Qu ; Wei Xu ; Jian Li

Author_Institution

State Key Lab. of Adv. Electromagn. Eng. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China

fYear

2014

fDate

Aug. 31 2014-Sept. 3 2014

Firstpage

1

Lastpage

5

Abstract

This paper shows that the split ratio of the stator inner diameter to the outer diameter has an influence on the air-gap flux density, stator copper loss, thermal load, torque density and cost for interior permanent magnet synchronous motors (IPMSMs) applied in electric vehicles (EVs). This paper presents a simplified analytical method to study the optimization of the split ratio considering both the efficiency and cost. The validity of this method is verified by experiment on a 35kW prototype.

Keywords

air gaps; electric vehicles; permanent magnet motors; stators; synchronous motors; torque; air gap flux density; electric vehicles; interior permanent magnet synchronous motor; optimal split ratio; power 35 kW; stator copper loss; torque density; Copper; Permanent magnet motors; Stator cores; Stator windings; Thermal loading; Torque; Electric vehicles (EVs); interior permanent magnet synchronous motors (IPMSMs); split ratio; stator copper loss; thermal load;

fLanguage

English

Publisher

ieee

Conference_Titel

Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), 2014 IEEE Conference and Expo

Conference_Location

Beijing

Print_ISBN

978-1-4799-4240-4

Type

conf

DOI

10.1109/ITEC-AP.2014.6940717

Filename

6940717