Prime-mover dynamo plants – Turbogenerators
Patent
1987-10-16
1988-06-28
Shoop, Jr., William M.
Prime-mover dynamo plants
Turbogenerators
290 40C, 290 43, 415 5, 415 7, 60499, 60500, 417331, 417332, F01D 1510
Patent
active
047541563
ABSTRACT:
Disclosed is a control apparatus for a variable-speed hydraulic power generating system comprising a variable-speed a.c. electric generator connected to an a.c. electric power system and a hydraulic machine system including a water turbine for driving the generator and a guide vane for controlling an amount of water supplied to the water turbine. The control apparatus comprises a frequency converter connected between the electric power system and the generator for controlling electric power supplied from the generator to the electric power system, control means operating in response to at least an externally applied power generation command signal for controlling, on one hand, the frequency converter thereby controlling the electric power supplied from the generator to the electric power system and generating, on the other hand, a guide-vane opening command signal for controlling the guide vane thereby controlling the amount of water supplied to the water turbine, and means for reducing resonance which may occur in the hydraulic machine system when the rotation speed of the water turbine changes in response to a change of the externally applied power generation output command signal.
REFERENCES:
patent: 4089287 (1978-05-01), Kranert et al.
patent: 4258270 (1981-03-01), Tornkvist
patent: 4287429 (1981-09-01), Bashnin et al.
patent: 4546264 (1985-10-01), Pinson
patent: 4694189 (1987-09-01), Haraguchi et al.
"Handbook of Electrical Engineers", p. 734, Japan.
Bando Akira
Haraguchi Eiji
Kuwabara Takao
Nakagawa Hiroto
Shiozaki Junichi
Hitachi , Ltd.
Ip Paul
Shoop Jr. William M.
The Kansai Electric Power Co. Inc.
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