Hamilton Sundstrand Corporation

Scott M Thomson

Michael James Krenz

Douglas J Turner

Richard J Hoppe

A system and method includes a multiplexed motor controller for controlling multiple motors with a weight and volume penalty comparable to that of a single controller system and method by receiving a plurality of inputs indicating a status, prioritizing a plurality of sub-systems based on the status, multiplexing a plurality of operation commands in accordance with the prioritization, and generating a plurality of waveforms in accordance with the operation commands.

Multiplexing control operations of motors

A system, multiplexed controller, and a method of controlling a plurality of motors is described. The system includes a plurality of motors, at least two of the motors requiring a variable-frequency source or being a multi-speed motor. The multiplexed controller of the system is configured to control operation of the plurality of motors, the controller directly communicating with each of the plurality of motors.

Multiplexed motor controller

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.

Narrow range variable frequency starter/generator system

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 then disengages the torque converter and engages the engine to the dynamoelectric machine through an adjustable speed transmission in a generating mode after the engine reaches self-sustaining speed, wherein the speed of the adjustable speed transmission is set to match the frequency of AC generated by the dynamoelectric machine with on-board electrical equipment requirements to suit flight conditions.

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Belvidere, IL, United States of America

Scott M Thomson