US Patent 7250688 Narrow range variable frequency starter/generator system
Patent 7250688 was granted and assigned to Hamilton Sundstrand on July, 2007 by the United States Patent and Trademark Office.
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A starter/generator system for a gas turbine engine used in aeronautical applications that couples a single dynamoelectric machine to the gas turbine engine through a torque converter in a starting mode, and engages the engine to the dynamoelectric machine through a mechanical differential in a generating mode after the engine reaches self-sustaining speed and combines the output of the engine and the torque converter to regulate the frequency of AC generated by the dynamoelectric machine within a range of frequencies suitable for on-board electrical equipment by dynamically regulating the flow of hydraulic fluid to the torque converter.
US Patent 07250688 Narrow range variable frequency starter/generator system US Patent 7250688 Narrow range variable frequency starter/generator system
US Patent 07250688 Narrow range variable frequency starter/generator system
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