Stabilized control system and method for coupling an induction g

Details Stabilized control system and method for coupling an induction g Stabilized control system and method for coupling an induction g

1986-06-19

1987-04-07

Hickey, R. J.

Electricity: single generator systems

Generator control

Induction generator

307 87, 322 19, 322 35, H02P 900

Patent

active

046564136

ABSTRACT:
A stabilized control system and method for smoothly connecting and disconnecting an induction generator to the utility power grid is described. Thyristor switches are interposed between each phase of the mains and the generator. The thyristors are gated so as to decouple the generator from the mains for a period during each mains half-cycle, the decoupling period decreasing as the generator power factor angle increases as the generator is driven by the prime mover to its synchronous speed and above. A feedback circuit processes the generator terminal voltage to produce an analog feedback signal level proportional to the thyristor blocking voltage. The feedback signal is used to increase the thyristor gate delay angle as the generator voltage increases with increasing generator output power. This causes the rate-of-change of the generator voltage with respect to generator speed to be less than it would be with no feedback signal present. The result is increased stability margin and also reduced generator losses which increase the available generator power flow to the mains when the generator is operating at a small fraction of its rated output.

REFERENCES:
patent: 4417194 (1983-11-01), Curtiss et al.
patent: 4446376 (1984-05-01), Baker
patent: 4473792 (1984-09-01), Nola

Affiliated with

Also associated with

Rating

Stabilized control system and method for coupling an induction g does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stabilized control system and method for coupling an induction g, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stabilized control system and method for coupling an induction g will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1088603