Asynchronous conversion method and apparatus for use with variab

Details Asynchronous conversion method and apparatus for use with variab Asynchronous conversion method and apparatus for use with variab

1995-10-31

1998-04-21

Ramirez, Ellis B.

Boots, shoes, and leggings

290 40C, 290 52, F01D 1510

Patent

active

057425159

ABSTRACT:
A hydroelectric power generation system (20) generates electrical power for an electrical utilization system (72). A controller (42) obtains a requested output electrical power level from a hydro-turbine unit (70) by using a signal indicative of water head (h.sub.meas) to control speed of an asynchronous rotary converter (50) coupled to the hydro-turbine unit and to control gate position of the hydro-turbine unit. The requested output electrical power level is applied from the hydro-turbine unit via the rotary converter to the electrical utilization system. In one embodiment, the controller (42B) accesses an updatable memory wherein Hydraulic Hill Chart information is stored. In another embodiment, the controller (42C) also includes a real-time automatic governor which uses a signal indicative of ac transmission frequency to the electrical utilization system to control the output electrical power level of the rotary converter.

REFERENCES:
patent: 3471708 (1969-10-01), Rauhut et al.
patent: 3694728 (1972-09-01), Kanngiesser et al.
patent: 3701938 (1972-10-01), Chadwick
patent: 3836837 (1974-09-01), Rauhut
patent: 4019115 (1977-04-01), Lips
patent: 4179729 (1979-12-01), Stanton et al.
patent: 4238822 (1980-12-01), Schade
patent: 4249237 (1981-02-01), Ronk et al.
patent: 4251736 (1981-02-01), Coleman
patent: 4430574 (1984-02-01), Ogiwara
patent: 4441029 (1984-04-01), Kao
patent: 4445049 (1984-04-01), Steigerwald
patent: 4489261 (1984-12-01), Hartwig et al.
patent: 4490808 (1984-12-01), Jasmin
patent: 4503377 (1985-03-01), Kitabayashi et al.
patent: 4517471 (1985-05-01), Sachs
patent: 4625125 (1986-11-01), Kuwabara
patent: 4683718 (1987-08-01), Larsson
patent: 4694189 (1987-09-01), Haraguchi et al.
patent: 4753827 (1988-06-01), Shiozaki et al.
patent: 4754156 (1988-06-01), Shiozaki et al.
patent: 4788647 (1988-11-01), McManus et al.
patent: 4794544 (1988-12-01), Albright et al.
patent: 4804900 (1989-02-01), Soeda
patent: 4806781 (1989-02-01), Hochstetter
patent: 4816696 (1989-03-01), Sakayori et al.
patent: 4823018 (1989-04-01), Kuwabara et al.
patent: 4870558 (1989-09-01), Luce
patent: 4920277 (1990-04-01), Kuwabara et al.
patent: 4922124 (1990-05-01), Seki et al.
patent: 4941079 (1990-07-01), Ooi
patent: 4992721 (1991-02-01), Latus
patent: 4994684 (1991-02-01), Lauw et al.
patent: 5111377 (1992-05-01), Higasa et al.
patent: 5239251 (1993-08-01), Lauw
patent: 5341280 (1994-08-01), Divan et al.
patent: 5402332 (1995-03-01), Kopf
patent: 5550457 (1996-08-01), Kusase et al.
patent: 5608615 (1997-03-01), Luce
Goto et al., "Power System Stabilizing Control By Adjustable Speed Pumped Storage Power Station Using Stabilizing Signals", CIGRE Symposium Tokyo 1995, pp. 1-6.
Puchstein, Llody, and Conrad, Alternating-Current Machines, 3rd Edition, John Wiley & Sons, Inc., New York, pp. 425-428, particularly Fig. 275 on p. 428, 1954.
Kron, Equivalent Circuits of Electric Machinery, John Wiley & Sons, Inc., New York, pp. 150-163, particularly Fig. 9.5a on p. 156, no date.
Larsen, Einar V., et al, "Specification of AC Filters For HVDC Systems", 1989.
"Rotary Converters", Westinghouse Electric & Manufacturing Company, Circular No. 1028, Apr. 1903.
"Inductrol Voltage Regulators", General Electric Company, Publication 607C, pp. 29-30, Jun. 1974.
Enrique Lopez P., et al "Control and Planning of 50/60 Hz Industrial System Load Flows", Aug. 1990, Proceedings of the Colloquium in S. America, Argentina, Brazil, Chile, Uruguay, pp. 162-167.

Affiliated with

Also associated with

Rating

Asynchronous conversion method and apparatus for use with variab does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Asynchronous conversion method and apparatus for use with variab, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Asynchronous conversion method and apparatus for use with variab will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2064745