Performance Improvement in High-Performance Brushless Rare-Earth Magnet Motors for Hybrid Vehicles by Use of High Flux-Density Steel

Publication Type:
Journal Article
IEEE Transactions On Magnetics, 2011, 47 (10), pp. 3016 - 3019
Issue Date:
Full metadata record
Files in This Item:
Filename Description Size
Thumbnail2011002478OK.pdf763.52 kB
Adobe PDF
Hybrid and electrical vehicles use mostly high-ef?ciency brushless permanent-magnet AC motors and sinewave drives. The motors utilize rare-earth magnet material and also are required to have a very high torque-per-rotor volume. The designs are now very well re?ned and often use interior permanent-magnet (IPM) rotors for a better ?eld weakening control. This con?guration has been shown to increase the ef?ciency. In this paper, the Toyota Prius 2004 motor is modeled using ?nite element analysis with different laminated steel materials in order to assess the effectiveness of using high ?ux-density steel versus the material volume. Additionally to the IPM rotor in the manufactured design, a spoke magnet rotor is also investigated. It is found that using high ?ux-density laminated steel will either increase the performance of the motor or allow the motor to be reduced in size (in this case, reduction in axial length).
Please use this identifier to cite or link to this item: