Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Nabeel Ahmed Shirazee0
Praveen Choudhary0
Date of Patent
June 3, 2008
0Patent Application Number
105765730
Date Filed
October 22, 2004
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A permanent magnet brushless 3-phase motor comprises windings R, Y, B, each divided into a plurality of sections 1-5 and switch means S1-S12 for selectively connecting the section of the respective winding e.g. R in series and/or parallel with all other sections of that winding R. Control means are provided for actuating the switch means S1-S12 to connect the winding sections 1-5 in different configurations while the motor is running to alter the speed/torque characteristics of the motor.
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