Title:
SINGLE PHASE INDUCTION MOTOR WITH PARTIALLY SHARED WINDINGS
Document Type and Number:
WIPO Patent Application WO2003067739
Kind Code:
A9
Abstract:
A single phase, three-speed induction motor having 4, 6, and 8-pole speed configurations. In one embodiment, the motor is constructed and arranged to be used in connection with a washing machine. The 8-pole speed winding shares a portion of the 4-pole speed winding, but not all of the 4-pole speed winding is used in the 8-pole configuration. In one embodiment, the 4-pole speed winding includes four winding portions and the 8-pole speed configuration uses two of the four winding portions without the need for additional switch contacts to reconfigure the motor for operating in the 4-pole mode or the 6-pole mode. In one embodiment, shared winding portions are wound on the stator core in a generally non-sinusoidal distribution and non-shared winding portions are wound on the stator core in a generally sinusoidal distribution.
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Inventors:
FEI RENYAN WILLIAM
DIREKES MARK C
DIREKES MARK C
Application Number:
PCT/US2003/003243
Publication Date:
March 04, 2004
Filing Date:
February 04, 2003
Export Citation:
Assignee:
EMERSON ELECTRIC CO (US)
International Classes:
H02K17/06; H02P25/04; (IPC1-7): H02K17/06; H02K3/28; H02P7/48
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