Effect of Side Permanent Magnets for Reluctance Interior Permanent Magnet Machines

Author

Hsu, J.S. ; Lee, S.T. ; Wiles, R.H. ; Coomer, C.L. ; Lowe, K.T. ; Burress, T.A.

Author_Institution

Oak Ridge Nat. Lab., Knoxville

fYear

2007

Firstpage

2267

Lastpage

2272

Abstract

A traditional electric machine uses two dimensional magnetic flux paths in its rotor. This paper presents the development work on the utilization of the third dimension of a rotor. As an example, the air gap flux of a radial gap interior permanent magnet motor can be significantly enhanced by additional permanent magnets (PM) mounted at the sides of the rotor. A prototype motor built with this concept provided higher efficiency and required a shorter stator core length for the same power output as the Toyota/Prius traction drive motor.

Keywords

electric vehicles; magnetic flux; permanent magnet motors; reluctance motor drives; traction motor drives; Toyota-Prius traction drive motor; air gap flux; electric machine; electric vehicles; radial gap interior permanent magnet motor; reluctance interior permanent magnet machines; side permanent magnet effect; two dimensional magnetic flux paths; Electric machines; Magnetic flux; Permanent magnet machines; Permanent magnet motors; Permanent magnets; Prototypes; Reluctance motors; Rotors; Stator cores; Traction motors; ac machines; electric vehicles; interior permanent magnet; reluctance;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2007. PESC 2007. IEEE

Conference_Location

Orlando, FL

ISSN

0275-9306

Print_ISBN

978-1-4244-0654-8

Electronic_ISBN

0275-9306

Type

conf

DOI

10.1109/PESC.2007.4342362

Filename

4342362