Energy packet control of generator prime mover
AssigneeSchweitzer Engineering Laboratories, Inc.
InventorsEdmund O. Schweitzer, III, Gregary C. Zweigle, Ellery A. Blood, Scott M. Manson
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Abstract
A controller may use energy packets to control a prime mover of a machine. The controller may include an energy packet measurement control to calculate energy packets and convert the energy packets into a fuel valve reference. Further, a frequency control may receive system feedback associated with the monitored machine and generate a frequency correction based on the system feedback. The controller may add the energy packet value and the frequency correction to determine a prime mover power reference and provide the prime mover power reference to a fuel valve control of the machine.
Claims20
A device to control a prime mover of a machine, the device comprising:
- first circuitry configured to perform:
- an energy packet measurement control to:
- calculate an energy packet associated with a monitored machine;
- a frequency control to:
- receive system feedback associated with the monitored machine, and
- generate a frequency correction based on a setpoint feedback;
- and
- adder circuitry configured to add the energy packet to the frequency correction, and provide a result as an input to a valve control mechanism.
A control system for a prime mover of a machine, the system comprising:
- first circuitry configured to perform:
- an energy packet measurement control to:
- calculate energy packets associated with a monitored machine, and
- convert the energy packets into a fuel valve reference;
- and
- a frequency control to generate frequency error corrections and power setpoint adjustments for the monitored machine,
- wherein the energy packet measurement control updates the fuel valve reference faster than the frequency control generates the frequency error corrections and the power setpoint adjustments;
- an adder circuit in communication with the first circuitry, the adder circuit configured to add the fuel valve reference and the frequency correction to determine a prime mover power reference;
- and
- a communications interface configured to provide the prime mover power reference to a fuel valve control mechanism of the monitored machine.
A device to control a prime mover of a machine, the device comprising:
- a first circuitry comprising:
- an energy packet measurement feedback loop configured to perform an energy packet control to calculate energy packets associated with a monitored machine, and convert the energy packets into a fuel valve reference;
- a frequency control feedback loop comprising:
- a power measurement sensor to obtain a power measurement of the monitored machine, and
- a filter to blend a prime mover power reference and the power measurement and output a blended power feedback, wherein the frequency control feedback loop is configured to perform a frequency control in communication with the filter, the frequency control to apply a droop factor to the blended power feedback and output a frequency power feedback, and
- a proportional gain circuit to generate the frequency correction using the frequency power feedback, a revolutions per minute (RPM) measurement, and an RPM reference;
- and
- a fuel valve calculator in communication with the energy packet measurement control and the frequency control, the fuel valve calculator configured to add the fuel valve reference and the frequency correction to determine the prime mover power reference, and provide the prime mover power reference to a fuel valve control mechanism of the monitored machine.
Dependencies are inferred from the claim text.