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US 2021/0286388 A1Published application
Nonlinear trim head power supply with a wide input range and a high efficiency
AssigneeHamilton Sundstrand Corporation
InventorsDaniel Knope, Adrian E. Vandergrift, Francisco X. Romo
Life of this patent
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Abstract
A trim head drive is provided. The trim head drive includes a nonlinear power supply. The nonlinear power supply includes an output and a return connected to a trim coil of a generator. An output of the nonlinear power supply directly drives a trim coil to control an output frequency of the generator. The nonlinear power supply varies the output positively and negatively to either sink or source a trim head current to control an output frequency of the generator.
Claims20
A trim head drive comprising:
- a nonlinear power supply comprising an output and a return connected to a trim coil of a generator,
- wherein an output of the nonlinear power supply directly drives a trim coil to control an output frequency of the generator, and
- wherein the nonlinear power supply varies the output positively and negatively to either sink or source a trim head current to control an output frequency of the generator.
A method comprising:
- generating, by a nonlinear power supply of a trim head drive, a voltage that a trim coil of a generator requires to provide a trim head current, the nonlinear power supply comprising an output and a return that are connected to the trim coil;
- and
- receiving, by the trim head drive, a frequency from and sensed by a frequency sense of the generator,
- wherein an output of the nonlinear power supply directly drives a trim coil to control an output frequency of the generator, and
- wherein the nonlinear power supply varies the output positively and negatively to either sink or source the trim head current to control an output frequency of the generator.
2 more elements
Dependencies are inferred from the claim text.