Title :
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
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;
Conference_Titel :
Power Electronics Specialists Conference, 2007. PESC 2007. IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-0654-8
Electronic_ISBN :
0275-9306
DOI :
10.1109/PESC.2007.4342362
