Electric power generation system with multiple inverters
First Claim
1. A method, comprising:
- operating a vehicular electrical power generation system including a variable speed internal combustion engine, a first variable speed electric power generator, a second variable speed electric power generator, a first inverter coupled to the first generator, and a second inverter coupled to the second generator;
driving the first generator and the second generator with the internal combustion engine operating at a first speed to supply electric power through the first inverter and the second inverter;
determining a degree of electrical load imbalance between the first inverter and the second inverter; and
controlling operating speed of the internal combustion engine as a function of the degree of the electrical load imbalance.
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Abstract
An apparatus includes a vehicular electric power generation system comprising a variable speed internal combustion engine, a first variable speed electric power generator driven by the engine, a second variable speed electric power generator driven by the engine, a first inverter to receive electric power from the first generator a provide a first controlled electric output, a second inverter to receive electric power from the second generator and provide a second controlled electric output, and a controller coupled to the engine. The controller is responsive to variation in electrical loading of the first inverter and the second inverter and a degree of electrical load imbalance between the first inverter and second inverter to provide an engine control signal. The engine is responsive to the one more engine control signals to change rotational operating speed to adjust for the variation in electrical loading and the degree of electrical load imbalance.
93 Citations
21 Claims
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1. A method, comprising:
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operating a vehicular electrical power generation system including a variable speed internal combustion engine, a first variable speed electric power generator, a second variable speed electric power generator, a first inverter coupled to the first generator, and a second inverter coupled to the second generator; driving the first generator and the second generator with the internal combustion engine operating at a first speed to supply electric power through the first inverter and the second inverter; determining a degree of electrical load imbalance between the first inverter and the second inverter; and controlling operating speed of the internal combustion engine as a function of the degree of the electrical load imbalance. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method, comprising:
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operating a vehicular electric power generation system including a variable speed internal combustion engine, a first variable speed electric power generator, a second variable speed electric power generator, a first inverter coupled to the first generator, and a second inverter coupled to the second generator; driving the first generator and the second generator with the internal combustion engine operating at a first speed to supply electricity through the first inverter and the second inverter; determining a change in electrical loading of the first inverter and the second inverter; and in response to the change in electrical loading, adjusting the internal combustion engine to operate at a second speed different than the first speed. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An apparatus, comprising a vehicular electrical power generation system, including:
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a variable speed internal combustion engine; a first variable speed electric power generator driven by the engine; a second variable speed electric power generator driven by the engine; a first inverter to receive electric power from the first generator and provide a first controlled electric output; a second inverter to receive electric power from the second generator and provide a second controlled electric output; a controller coupled to the engine, the controller being responsive to variation in electrical loading of the first inverter and the second inverter and a degree of electrical load imbalance between the first inverter and the second inverter to provide an engine control signal; and the engine being responsive to the control signal to change rotational operating speed to adjust for the variation in electrical loading and the degree of electrical load imbalance. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification