Gas turbine generator torque DC to DC converter control system

A system comprising:

• a gas turbine;
• a first controller configured to control the gas turbine to operate at a constant speed set point and a variable torque output;
• a generator rotatably coupled with the gas turbine and configured to output electric power to a power source bus;
• a DC to DC converter operable as a load on the power source bus;
• a load bus coupled with an output of the DC to DC converter, the load bus configured to intermittently supply a transient step change load;
• a second controller configured to control a DC output power of the DC to DC converter to supply the load bus and intermittently supply the transient step change load;
• and
• an energy storage device configured to supply power to the load bus;
• the second controller configured to limit a rate of change of the DC output power of the DC to DC converter during intermittent supply of the transient step change load subsequent to receipt of a transient load control signal, the transient load control signal anticipatory of application of the transient step change load to the load bus, the rate of change limited by the second controller to maintain the variable torque of the gas turbine below a predetermined threshold as a load ramp rate of the DC to DC converter changes on the power source bus.

A memory device having a plurality of instructions executable by a processor stored therein, the memory device being non-transitory and comprising:

• instructions executable with the processor to control a gas turbine to rotate at a constant rated speed and a variable torque to drive a generator in accordance with a load being supplied by the generator;
• instructions executable with the processor to control output of electric power with the generator to a power source bus;
• instructions executable with the processor to control a level of a DC output power output by a DC to DC converter on a load bus, the DC to DC converter coupled to the power source bus as at least part of the load being supplied by the generator;
• instructions executable with the processor to control supply to the load bus of DC power supplied from an energy storage device;
• instructions executable with the processor to receive a transient load control signal indicative of an anticipated future occurrence of a step change load event on the load bus, wherein the step change load event is received on the load bus after receipt of the transient load control signal;
• instructions executable with the processor to adjust a level of the DC output power of the DC to DC converter in response to the step change load event;
• and
• instructions executable with the processor to apply a constraint on a rate of change of the level of the DC output power of the DC to DC converter, the constraint applied based on the transient load signal to maintain the variable torque of the generator below a predetermined threshold as a load ramp rate of the DC to DC converter changes on the power source bus.