Title :
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
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;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2014 17th International Conference on
Conference_Location :
Hangzhou
DOI :
10.1109/ICEMS.2014.7013664
