Method and apparatus for the constant speed control of brushless

Details Method and apparatus for the constant speed control of brushless Method and apparatus for the constant speed control of brushless

1983-04-26

1985-04-30

Witkowski, Stanley J.

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 318672, H02P 602

Patent

active

045146675

ABSTRACT:
Method and apparatus for the constant speed control of a brushless DC motor, whose pole windings receive a pulsed control voltage between their commutation points, control being a function of the speed characteristics of the motor, and the commutation points being synchronized with the drop times of the motor current and the control voltage pulses. In a state in which there are no load changes, the motor current substantially rises or drops between a maximum value I.sub.max and a minimum value I.sub.min according to the pulse mode. In the event of changes in the motor load, a mean motor sum current is retained for maintaining the speed.

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Edminister, J. A.; "Electric Circuits", Schaum's Outline Series, Ch. 16, McGraw-Hill Book Co., 1965.
IBM Technical Disclosure Bulletin, vol. 21, No. 7, Dec. 1978, to S. D. Keidl, "Dual-Phase-Locked Brushless DC Motor Velocity Control", pp. 2951-2952.
IBM Technical Disclosure Bulletin, vol. 19, No. 10, Mar. 1977, to S. D. Keidl, "Speed Regulation for Brushless DC Motors", pp. 3831-3832.

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