Motor control system

Details Motor control system Motor control system

1979-08-29

1982-08-10

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Power-factor control

318803, 318810, H02P 540

Patent

active

043440258

ABSTRACT:
A motor control system controls to be constant a reactive power consumed by a motor load equipment having a motor to be driven by power supplied from an AC power source and a couple of thyristor converters for regulating the power supplied to the motor. To this end, the motor control system is comprised of a reactor power detector for detecting the reactive power of the motor load equipment, a command circuit for issuing a command to specify the rated reactive power consumed in the rated load running of the motor load equipment, and a reactive power control unit which receives an output signal from the command circuit and an output signal from the reactive power detector to produce a firing phase command signal depending on a difference between them. The firing phase command signal from the reactive power control unit is applied to an automatic pulse phase shifter to control the firing phase of the thyristor converters.

REFERENCES:
patent: 3383575 (1968-05-01), Bobo
patent: 3419785 (1968-12-01), LaFuse
patent: 3686552 (1972-08-01), Peterson
patent: 3896348 (1975-07-01), Loderer
patent: 4052648 (1977-10-01), Nola
patent: 4121150 (1978-10-01), Kelley, Jr.
patent: 4129809 (1978-12-01), Rosa
patent: 4158801 (1979-06-01), Hirata
patent: 4186334 (1980-01-01), Hirata

Affiliated with

Also associated with

Rating

Motor control system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Motor control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motor control system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1532891