Investigation of a five-phase 20-slot/18-pole PMSM for electric vehicles

Author

Ping Zheng ; Yi Sui ; Zhenxing Fu ; Peilun Tang ; Fan Wu ; Pengfei Wang

Author_Institution

Sch. of Electr. Eng. & Autom., Harbin Inst. of Technol., Harbin, China

fYear

2014

fDate

22-25 Oct. 2014

Firstpage

1168

Lastpage

1172

Abstract

High reliability and high fault-tolerant ability are very important for safety-critical applications like electric vehicles (EVs). This paper investigates a five-phase fault-tolerant 20-slot/18-pole permanent magnet synchronous machine (PMSM) for EVs. In order to get sinusoidal back electromotive force (EMF), two typical methods including rotor eccentricity and Halbach permanent-magnet (PM) array are investigated and compared. PM segmentation method is adopted to reduce the PM eddy current loss and improve the machine efficiency. Based on 3-D finite element analysis (FEA) software Ansys Fluent, the thermal field distribution is calculated and the machine cooling system is designed.

Keywords

eddy current losses; electric machine analysis computing; electric potential; electric vehicles; permanent magnet machines; rotors; synchronous machines; 3D finite element analysis; EMF; EV; FEA software Ansys Fluent; Halbach permanent-magnet array; eddy current loss reduction; electric vehicles; fault-tolerant ability; five-phase 20-slot-18-pole PMSM; machine cooling system; machine efficiency; permanent magnet synchronous machine; rotor eccentricity; safety-critical applications; segmentation method; sinusoidal back electromotive force; thermal field distribution; Eddy currents; Fault tolerance; Fault tolerant systems; Harmonic analysis; Magnetic flux; Rotors; Stator windings;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2014 17th International Conference on

Conference_Location

Hangzhou

Type

conf

DOI

10.1109/ICEMS.2014.7013664

Filename

7013664