Power plants – Combustion products used as motive fluid – Multiple fluid-operated motors
Patent
1985-04-19
1987-02-24
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
Multiple fluid-operated motors
60 39282, F02C 602, F02C 928
Patent
active
046447440
ABSTRACT:
A control device for controlling an engine of a turbine power system having more than one engine is disclosed. The control device includes a proportional-integral-differential (PID) controller based on power turbine speed and a signal representing the difference between the torque of the engine being controlled and the torque of another engine in the power system, if the controlled engine is generating a torque less than that of the other engine. Accordingly, the control loop used in the device inherently tends to bring the torque of the controlled engine up to the torque of the other engine while maintaining power turbine speed equal to its reference, thereby equalizing the torques without expensive electrical connections between the controls of the two engines. Overrides are provided so that fuel also may be controlled based on the maximum torque of the engine being controlled, the total torque exerted by all the engine of the power system, the power tubine temperature, or by positive or negative gas generator speed rate of changes.
REFERENCES:
patent: 3174284 (1965-03-01), McCarthy
patent: 3200886 (1965-08-01), Magri et al.
patent: 3307351 (1967-03-01), Wheeler et al.
patent: 3403507 (1968-10-01), Schuster
patent: 3600888 (1971-08-01), Nethken et al.
patent: 3930366 (1976-01-01), Nelson
Mittendorf Gerald C.
Sollman Francis G.
Allied Corporation
Antonis William N.
Casaregola Louis J.
Decker Ken C.
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