Appeal No. 1998-1248
Application No. 08/460,086
the frequency of the alternating current applied to the rotor
is adjusted based upon load demand and ambient temperature.
Independent Claim 10 is representative of the invention:
10. An adjustable speed gas turbine power generation
apparatus comprising:
a compressor for taking in and compressing air;
a combustor for combusting fuel with the compressed air
from the compressor to generate combustion gas;
a gas turbine driven by the generated combustion gas;
a fuel control device for controlling an amount of fuel
to be supplied to the combustor in response to a load demand
signal;
and
a power generator having a primary winding connected to a
power transmission system and a secondary winding which is
excited with alternating current; and wherein
the generator and compressor are connected to the gas
turbine by a drive shaft, and wherein a rotational speed of
the drive shaft increases to adjust an output of the gas
turbine in response to an increase in the load demand signal
and an increase in the ambient temperature.
The Examiner relies upon the following references:
Carroll (Caroll) 4,321,791 Mar. 30, 1982
Geary, Jr. et al. (Geary) 4,452,048 Jun. 5, 1984
Lauw et al. (Lauw) 4,994,684 Feb. 19, 1991
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