Permanent magnet excited electric motor
Number of patents in Portfolio can not be more than 2000
United States of America
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-
Apr 7, 1998
Grant Date -
N/A
app pub date -
Jul 23, 1996
filing date -
Jan 13, 1986
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A permanent magnet excited motor is provided with a plurality of low circumferential hump-like protrusions on the face of each stator pole to partially decrease the air gap between the stator and rotor and act as so-called magnetic cams to exert a force on the rotor to smooth an otherwise uneven parasitic slot torque that occurs between the interaction of slot openings of the stator poles and the gaps between the permanent magnet poles of the rotor.
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