Starter/generator system with control to address a voltage rise
First Claim
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1. A starter/generating system comprising:
- a plurality of stator windings connected to a start inverter, a bus capacitor mounted in parallel with a load, and a power source for being selectively connected to said stator windings through a start/generate switch, said start/generate switch moving to a generate position to connect said stator windings to said load;
a control for controlling said start inverter to allow the flow of power from said power source to said stator windings in one position, and to allow the flow of power from said stator windings to said load in a second position; and
a control to detect an unduly high voltage on said bus capacitor, said control being operable to allow flow of power from said bus capacitor back to said stator windings if an unduly high voltage is detected.
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Abstract
A control circuit for a generator has a control function that monitors the voltage across a bus capacitor. The circuit delivers excess voltage back to associated stator windings if an unduly high voltage is detected across the bus capacitor.
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Citations
11 Claims
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1. A starter/generating system comprising:
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a plurality of stator windings connected to a start inverter, a bus capacitor mounted in parallel with a load, and a power source for being selectively connected to said stator windings through a start/generate switch, said start/generate switch moving to a generate position to connect said stator windings to said load; a control for controlling said start inverter to allow the flow of power from said power source to said stator windings in one position, and to allow the flow of power from said stator windings to said load in a second position; and a control to detect an unduly high voltage on said bus capacitor, said control being operable to allow flow of power from said bus capacitor back to said stator windings if an unduly high voltage is detected. - View Dependent Claims (2, 3, 4, 5)
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6. A gas turbine engine comprising:
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a shaft being driven to rotate; a plurality of stator windings connected to a start inverter, a bus capacitor mounted in parallel with a load, and a power source for being selectively connected to said stator windings through a start/generate switch, said start/generate switch moving to a generate position to connect said stator windings to said load; a control for controlling said start inverter to allow the flow of power from said power source to said stator windings in one position, and to allow the flow of power from said stator windings to said load in a second position; and a control to detect an unduly high voltage on said bus capacitor, said control being operable to allow flow of power from said bus capacitor back to said stator windings if an unduly high voltage is detected. - View Dependent Claims (7, 8, 9, 10)
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11. A method of controlling a generator comprising the steps of:
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providing a plurality of stator windings connected to a start inverter, and a bus capacitor mounted in parallel with a load, and a power source connected to said stator windings through a start/generate switch, said start/generate switch moving to a generate position to connect said stator windings to said load; controlling said start inverter to allow the flow of power from said power source to said windings in a start position, and to allow the flow of power from said stator windings to said load in a generate position; and detecting an unduly high voltage on said bus capacitor, and then controlling the start inverter to allow flow of power from said bus capacitor back to said stator windings.
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Specification