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Patent Searching and Data


Title:
MULTIPHASE MOTOR HAVING WINDING CONNECTIONS SPECIFIC TO RESPECTIVE OPERATING SPEED RANGES
Document Type and Number:
WIPO Patent Application WO2004045059
Kind Code:
A3
Abstract:
A permanent magnet motor includes salient pole stator cores. The poles and/or linking portions therebetween are wound with a plurality of winding coil sets. Mutually exclusive speed ranges are established between startup and a maximum speed at which the motor can be expected to operate. A different number of the motor stator winding coils are designated to be energized for each speed range for maximum operating efficiency. The number of energized coils are changed dynamically as the speed crosses a threshold between adjacent speed ranges.

Inventors:
MASIOV BORIS A (US)
SOGHOMONIAN ZAREH SALMASI (US)
Application Number:
PCT/US2003/035421
Publication Date:
July 15, 2004
Filing Date:
November 06, 2003
Export Citation:
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Assignee:
WAVECREST LAB LLC (US)
MASIOV BORIS A (US)
SOGHOMONIAN ZAREH SALMASI (US)
International Classes:
H02P1/00; H02P1/48; H02P5/00; H02P7/00; H02P25/20; H02P; (IPC1-7): H02P7/48; H02P1/48
Foreign References:
EP0124698A11984-11-14
DE1965085A11971-07-01
US5650707A1997-07-22
US6492756B12002-12-10
US6008616A1999-12-28
Other References:
OSAMA M ET AL: "Experimental and finite element analysis of an electronic pole-change drive", INDUSTRY APPLICATIONS CONFERENCE, 1999. THIRTY-FOURTH IAS ANNUAL MEETING. CONFERENCE RECORD OF THE 1999 IEEE PHOENIX, AZ, USA 3-7 OCT. 1999, PISCATAWAY, NJ, USA,IEEE, US, 3 October 1999 (1999-10-03), pages 914 - 921, XP010355276, ISBN: 0-7803-5589-X
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