A Novel Hybrid-Excited Switched-Flux Brushless AC Machine for EV/HEV Applications

Author

Chen, J.T. ; Zhu, Z.Q. ; Iwasaki, S. ; Deodhar, Rajesh P.

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. of Sheffield, Sheffield, UK

Volume

60

Issue

4

fYear

2011

fDate

5/1/2011 12:00:00 AM

Firstpage

1365

Lastpage

1373

Abstract

A novel E-core hybrid-excited switched-flux permanent-magnet (SFPM) brushless machine is proposed based on an E-core SFPM machine, which has significantly less magnet and higher torque density than those of a conventional SFPM machine. The proposed machine has a simple structure. The main flux path of dc excitation does not affect the magnet excitation because it is not through magnets. The combination of stator and rotor pole numbers of the proposed machine is optimized, and the flux-enhancing and flux-weakening capabilities are investigated by 2-D finite-element analyses and experimentally validated.

Keywords

AC machines; brushless machines; finite element analysis; hybrid electric vehicles; magnetic flux; permanent magnet machines; rotors; stators; torque; 2D finite element analysis; E-core SFPM machine; E-core hybrid-excited switched-flux permanent-magnet brushless machine; EV application; HEV application; dc excitation flux path; flux-enhancing capability; flux-weakening capability; hybrid electric vehicle; hybrid-excited switched-flux brushless AC machine; magnet excitation; rotor pole number; stator; torque density; Coils; Magnetic flux; Rotors; Stator windings; Torque; Windings; Brushless; electric vehicle (EV); hybrid excited; permanent magnet (PM); switched-flux;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/TVT.2011.2132811

Filename

5739549