Hybrid turbogenerator and associated method
First Claim
1. A method of operating a hybrid turbogenerator including a gas turbine engine coupled to an electric motor-generator, the method comprising:
- alternating between a standby mode and a charging mode,wherein during operation in the standby mode, the method further comprises;
at least partially closing one or more inlet guide vanes to limit air flow through a compressor and to a turbine of the gas turbine engine; and
providing electric power to both a power bus and the electric motor-generator from an energy storage device; and
wherein during operation in the charging mode, the method further comprises;
at least partially opening the one or more inlet guide vanes to increase air flow through the compressor and to the turbine of the gas turbine engine relative to the standby mode; and
providing electric power from the electric motor-generator to both the power bus and the energy storage device.
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Accused Products
Abstract
A hybrid turbogenerator and a method of operation are provided to configure a gas turbine engine. In the context of a method, a hybrid turbogenerator including a gas turbine engine coupled to an electric motor-generator alternates between a standby mode and a charging mode. In the standby mode, the method at least partially closes one or more inlet guide vane(s) to limit air flow through a compressor and into a turbine. In the standby mode, the method provides power to both a power bus and the electric motor-generator from an energy storage device. In the charging mode, the method at least partially opens the inlet guide vane(s) to increase air flow through the compressor and into the turbine relative to the standby mode. In the charging mode, the method provides electric power from the electric motor-generator to both the power bus and the energy storage device.
52 Citations
20 Claims
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1. A method of operating a hybrid turbogenerator including a gas turbine engine coupled to an electric motor-generator, the method comprising:
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alternating between a standby mode and a charging mode, wherein during operation in the standby mode, the method further comprises; at least partially closing one or more inlet guide vanes to limit air flow through a compressor and to a turbine of the gas turbine engine; and providing electric power to both a power bus and the electric motor-generator from an energy storage device; and wherein during operation in the charging mode, the method further comprises; at least partially opening the one or more inlet guide vanes to increase air flow through the compressor and to the turbine of the gas turbine engine relative to the standby mode; and providing electric power from the electric motor-generator to both the power bus and the energy storage device. - View Dependent Claims (2, 3, 4, 5)
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6. A hybrid turbogenerator comprising:
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a gas turbine engine comprising a compressor, a combustor and a turbine; an electric motor-generator rotationally coupled to the gas turbine engine; an energy storage device; one or more inlet guide vanes positioned to at least partially control air flow through the compressor and to the turbine of the gas turbine engine; and a controller configured to cause operation of the hybrid turbogenerator to alternate between a standby mode and a charging mode, wherein, during operation in the standby mode, the controller is configured to; at least partially close one or more inlet guide vanes to limit air flow through the compressor and to the turbine of the gas turbine engine; and provide electric power to both a power bus and the electric motor-generator from the energy storage device; and wherein, during operation in the charging mode, the controller is configured to; at least partially open the one or more inlet guide vanes to increase air flow through the compressor and to the turbine of the gas turbine engine relative to the standby mode; and provide electric power from the electric motor-generator to both the power bus and the energy storage device. - View Dependent Claims (7, 8, 9, 10)
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11. A method of operating a hybrid turbogenerator including a gas turbine engine coupled to an electric motor-generator, the method comprising:
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alternating between a standby mode and a charging mode, wherein during operation in the standby mode, the method further comprises; controllably positioning a plurality of valves so as to direct air flow through a turbine and then to a compressor of the gas turbine engine; and providing electric power to a power bus from an energy storage device; and wherein during operation in the charging mode, the method further comprises; controllably positioning the plurality of valves so as to redirect air flow to the compressor and then to the turbine of the gas turbine engine; and providing electric power from the electric motor-generator to both the power bus and the energy storage device. - View Dependent Claims (12, 13, 14, 15)
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16. A hybrid turbogenerator comprising:
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a gas turbine engine comprising a compressor and a turbine; an electric motor-generator rotationally coupled to the gas turbine engine; an energy storage device; a plurality of valves configured to direct air flow through the gas turbine engine; and a controller configured to cause operation of the hybrid turbogenerator to alternate between a standby mode and a charging mode, wherein, during operation in the standby mode, the controller is configured to; controllably position the plurality of valves so as to direct air flow through the turbine and then to the compressor of the gas turbine engine; and provide electric power to a power bus from the energy storage device; and wherein, during operation in the charging mode, the controller is configured to; controllably position the plurality of valves so as to redirect air flow to the compressor and then to the turbine of the gas turbine engine; and provide electric power from the electric motor-generator to both the power bus and the energy storage device. - View Dependent Claims (17, 18, 19, 20)
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Specification