Title :
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
fDate :
5/1/2011 12:00:00 AM
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;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2011.2132811
