Variable slip controller for an AC motor

Details Variable slip controller for an AC motor Variable slip controller for an AC motor

1981-12-24

1984-03-20

Smith, Jr., David

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Running-speed control

318811, H02P 540, H02P 546

Patent

active

044383762

ABSTRACT:
A control system is provided in which a signal proportional to the actual rotor speed of an induction motor is coupled to a variable gain amplifier. Changes in the commanded gain of the amplifier electronically control the ratio between rotor speed and the output signal amplitude of the variable gain amplifier. The output of the variable gain amplifier determines the commanded stator frequency. Disks optically encoded with a PWM pattern are driven at a speed which corresponds to the commanded stator frequency. Optical sensors read the pattern and provide switching signals to an inverter coupled to an induction motor.

REFERENCES:
patent: 3164760 (1961-09-01), King
patent: 3808976 (1974-05-01), Bessire
patent: 4266176 (1981-05-01), Fulton
patent: 4281276 (1981-06-01), Cutler et al.
patent: 4286203 (1981-08-01), Ehret
patent: 4335343 (1982-06-01), Dreiseitl et al.
Athani, V. V., "Microprocessor Control of a Three--Phase Invertor in Induction Speed Control System," IEEE Trans. on Industrial Electronics & Control, vol. IECI--27, No. 4, 11-q.

Affiliated with

Also associated with

Rating

Variable slip controller for an AC motor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable slip controller for an AC motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable slip controller for an AC motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1606642