Interior permanent magnet motor

Details Interior permanent magnet motor Interior permanent magnet motor

2007-12-12

2009-11-03

Zarroli, Michael C (Department: 2839)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156560

Reexamination Certificate

active

07612480

ABSTRACT:
A rotor portion of a motor includes a rotor core and a plurality of field magnets arranged in a circumferential direction at the rotor core. The rotor core includes at a flux barrier portion thereof arranged between a pair of field magnets of opposite magnetic polarities arranged next to one another a flux barrier hole. The flux barrier hole is independent of a magnet retaining hole in which the field magnet is retained. The magnet retaining hole includes a concave portion extending from a side thereof nearest to the flux barrier hole toward the corresponding flux barrier hole.

REFERENCES:
patent: 5962944 (1999-10-01), Narita et al.
patent: 6031311 (2000-02-01), Lee
patent: 6794784 (2004-09-01), Takahashi et al.
patent: 6946766 (2005-09-01), Gary et al.
patent: 2007/0063607 (2007-03-01), Hattori
patent: 2000-060038 (2000-02-01), None
patent: 2005-328679 (2005-11-01), None

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