Gas turbine generator load level control system
AssigneeRolls-Royce Marine North America Inc.
InventorsIvan Troitsky, Ainsmar Brown, James Greg Steinrock, Donald Silverstein
Life of this patent
Estimating the term…
Abstract
A system includes a gas turbine engine, a generator coupled with the gas turbine engine, and controller circuitry. The generator may be rotatable by the gas turbine engine to generate electric power on a load bus. The controller circuitry may control the load bus to manage an output torque of the gas turbine engine in accordance with a load demand present on the generator. The controller circuitry may dynamically alternate supply of electric power from the load bus to a first load and a second load to maintain operational transient parameters of the gas turbine engine within a predetermined range.
Claims20
A system comprising:
- a gas turbine engine;
- a generator coupled with the gas turbine engine, the generator rotatable by the gas turbine engine to generate electric power on a load bus;
- controller circuitry configured to control the load bus to manage an output torque of the gas turbine engine in accordance with a load demand present on the generator;
- and
- a first load and a second load, the controller circuitry configured to dynamically alternate supply of electric power from the load bus to the first load and the second load to maintain operational transient parameters of the gas turbine engine within a predetermined range.
A method comprising:
- rotationally driving a generator with a gas turbine engine;
- outputting electric power to a load bus with the generator to supply a load demand present on a the load bus;
- energizing a first load with the load bus and increasing an output torque demand of the gas turbine engine in accordance with an increase in the load demand on the load bus;
- cycling between energizing, with the load bus, the first load and a second load to substantially maintain the increase in the load demand on the load bus as the first load and the second load are sequentially energized and deenergized;
- and
- maintaining the output torque demand of the gas turbine engine substantially unchanged during the cycling.
The method of 13, further comprising discontinuing cycling, maintaining energization of the dynamic braking resistor and decreasing an output torque of the gas turbine engine.
A system comprising:
- controller circuitry configured to:
- monitor an operational parameter of a gas turbine engine;
- control a load demand of a generator to output electric power on a load bus, the generator rotatably driven to generate electric power by output torque of the gas turbine engine;
- control energization and de-energization of a first load as a load on the load bus;
- control energization and de-energization of a second load as the load on the load bus;
- transition between the load on the load bus being the first load and being the second load;
- and
- maintain the load on the load bus substantially unchanged by timing the transition between the load on the load bus being the first load and being the second load.
Dependencies are inferred from the claim text.