Permanent magnet electric rotating machine and electromotive...

Details Permanent magnet electric rotating machine and electromotive... Permanent magnet electric rotating machine and electromotive...

2006-08-25

2008-11-04

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156530, C310S156560

Reexamination Certificate

active

07446448

ABSTRACT:
A magnetic gap is provided between a permanent magnet of a rotor and an auxiliary magnet pole portion which is arranged adjacent to the permanent magnet in a peripheral direction. A gradual change in a magnetic flux density distribution of a surface of the rotor is obtained and a cogging torque and a torque pulsation are restrained. By obtaining a reluctance torque according to the auxiliary magnetic pole, a permanent magnet electric rotating machine in which the cogging torque and the torque pulsation are restrained can be obtained and further an electromotive vehicle having the permanent magnet electric rotating machine can be provided.

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