Appeal No. 1998-1248
Application No. 08/460,086
and Column 5, lines 40 through 48. Carroll teaches that the
speed of the turbine is controlled in accordance with the
speed vs. fuel flow chart shown in figure 3. Thus, we find
that Carroll does not teach turbine control responsive to a
load signal, but rather responsive to a speed demand signal.
As such we do not find that Carroll teaches that the speed of
the turbine is responsive to demanded load or ambient
temperature. We note that, Carroll discloses that increasing
load to the turbine may decrease the speed of the turbine. In
figure 3, the plot 46 shows the full load maximum fuel flow
line and plot 60 shows the no-load fuel flow line. See Column
3, lines 36 through 39. In plot 58 the turbine speed is
decreasing as the turbine transition between no-load idle (end
of line segment 60) to full load idle (point 44).
We find that Lauw teaches a generator control circuit for
a variable speed generator. See column 1, lines 6 through 10.
Lauw’s system is such that alternating current may be applied
to the generator rotor windings. See Column 11, lines 36
through 44. The power output from the variable speed
generator is at the same frequency as the power grid. See
Column 7, lines 35 through 27. Further, Lauw teaches that
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