Control system for synchronous brushless motors

Details Control system for synchronous brushless motors Control system for synchronous brushless motors

H - Electricity

02

P

318/93

H02P 6/14 (2006.01) G05B 1/06 (2006.01) H02P 6/06 (2006.01) H02P 23/00 (2006.01)

Patent

CA 1179008

03-016 Title: CONTROL SYSTEM FOR SYNCHRONOUS BRUSHLESS MOTORS Inventor: James S. Whited ABSTRACT A motor control system wherein the motor windings are energized by sinusoidal excitation currents synthesized from pre- recorded sine values. The frequency of the winding excitation currents is synchronous with the rotor movement and the phase is a function of the rotor position with respect to the stator. The phase of the winding excitation is additionally controllable as a function of speed or some other adequate system parameter. It has further been found that the total operational speed range of the system is substantially increased by further adjusting and controlling the phase of the excitation currents as a function of the desired speed.

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