Electric motor having auxiliary portions distributed at a pitch which is an odd number sub-multiple of the pitch of active portions
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United States of America Patent
Stats
-
Jun 30, 1987
Grant Date -
N/A
app pub date -
Aug 26, 1985
filing date -
Aug 31, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The winding of the motor comprises coils which may be formed by conductive paths deposited on the surface of an insulating substrate according to the printed circuit technique. Each turn of the coil comprises two active conductors extending radially, inside connections, and outside connections. The outside connections of the outer paths of the coil have a fret or meander shape, constituting three pairs of auxiliary conductor portions. Upon rotation of the rotor, these portions create in the winding induced voltages having a frequency three times the commutation frequency of the coils, the effect of which is to regularize the motor torque.
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