Patents Assigned to Electronica Products Limited
  • Magnetic gearing of permanent magnet brushless motors
    Patent number: 7382103
    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.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: June 3, 2008
    Assignee: Electronica Products Limited
    Inventors: Nabeel Ahmed Shirazee, Praveen Choudhary