Electricity: motive power systems – Generator-fed motor systems having generator control – Automatic generator control and/or with time-delay means
Patent
1993-05-12
1995-06-27
Shoop, Jr., William M.
Electricity: motive power systems
Generator-fed motor systems having generator control
Automatic generator control and/or with time-delay means
318715, H02P 146
Patent
active
054282756
ABSTRACT:
A method of controllably starting a prime mover, such as a gas turbine engine for an aircraft, in which the prime mover is coupled to a synchronous machine operable in a generating mode in which the synchronous machine converts motive power generated by the prime mover into electrical power and in a starting mode in which the synchronous machine provides motive power to the prime mover to accelerate the prime mover to self-sustaining speed includes three controlled phases: a pre-ignition phase, an ignition phase, and a torque augmentation phase. During each phase the prime mover is accelerated at a predetermined rate. When the motive power provided by the synchronous machine falls below a predetermined level, its operation is converted from its starting mode to its generating mode.
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Carr Kenneth R.
McArthur Malcolm J.
Shippling James A.
Weber Leland E.
Makeever Jeffery J.
Shoop Jr. William M.
Sircus Brian
Sundstrand Corporation
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