Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1990-04-18
1991-10-01
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 68B, 290 40A, 318702, H02K 709
Patent
active
050536621
ABSTRACT:
Electromagnetic damping techniques for use in slowing down the shaft to a gas turbine based on various electrical machine concepts. A rotor may be mounted on an outer race of a bearing through which the shaft extends. The damper may use a permanent magnet (PM) design with permanent magnets mounted to the rotor. Alternately, the rotor and stator may be designed to operate upon a switched reluctance motor (SRM) design. Instead of having the rotor mounted to the outer race, an alternate arrangement may use a rotor mounted directly to the gas turbine shaft in which case the rotor and a corresponding stator serve both as a damper and as an electrical generator for providing the usual electrical generation functions from the gas turbine shaft.
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Dougherty Thomas M.
General Electric Company
Squillaro Jerome C.
Stephan Steven L.
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