Power plants – Combustion products used as motive fluid – Process
Reexamination Certificate
2007-03-27
2007-03-27
Casaregola, L. J. (Department: 3746)
Power plants
Combustion products used as motive fluid
Process
C060S039281, C137S599070, C415S038000
Reexamination Certificate
active
10931694
ABSTRACT:
One embodiment of the invention provides a turbine control system that adjusts the control thresholds of two-position valves, which provide propellant to the turbine, based on turbine load so as to compensate for increased turbine speed overshoot at low load and the increased turbine speed undershoot at high load. These two-position on-off modulated valves are used in a bang-bang (fully open or fully closed) regulation scheme to eliminate or minimize speed droop by using variable speed bounds implemented as a function of load.
REFERENCES:
patent: 3660977 (1972-05-01), Reynolds
patent: 3939328 (1976-02-01), Davis
patent: 3965684 (1976-06-01), Nomura
patent: 4035624 (1977-07-01), Lardi
patent: 4146270 (1979-03-01), Nurnberger et al.
patent: 4185203 (1980-01-01), Takeuchi
patent: 4464577 (1984-08-01), Wagner et al.
patent: 4694189 (1987-09-01), Haraguchi et al.
patent: 5179875 (1993-01-01), Brown
patent: 5295783 (1994-03-01), Lesko et al.
patent: 5332959 (1994-07-01), Malmquist et al.
patent: 5789822 (1998-08-01), Calistrat et al.
patent: 5953902 (1999-09-01), Jerye et al.
patent: 6070405 (2000-06-01), Jerye et al.
patent: 6105370 (2000-08-01), Weber
patent: 6316841 (2001-11-01), Weber
patent: 6602044 (2003-08-01), Kuwabara et al.
patent: 2003/0091429 (2003-05-01), Staroselsky et al.
patent: 58200006 (1983-11-01), None
patent: 63090602 (1988-04-01), None
patent: 4134101 (1992-05-01), None
patent: 11166402 (1999-06-01), None
Ganev Evgeni
Koerner Mike S.
Liu Chung Y.
Caglar Esq. Oral
Casaregola L. J.
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