Brushless DC motor having reduced cogging torque
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Dec 6, 2001
app pub date -
Feb 1, 2001
filing date -
Feb 1, 2000
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A stator lamination (20) for forming a stator assembly (82) of a permanent magnet motor (80) includes a yoke region (23) and a plurality of stator poles (22) spaced along and extending inwardly from the yoke region. The stator poles (22) are configured and arranged to define a slot (28) having a predetermined span (30) between the lateral end surfaces of adjacent stator poles. A plurality of teeth (24) are formed on the distal ends of each of the stator poles (22), and are separated from each other by a notch (26). The teeth (24) are equi-spaced and the number of notches (26) is an even number.
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