General Electric Company

Brian Ernest Baxter Gott

John Russell Yagielski

James Michael Fogarty

Evangelos Trifon Laskaris

Yu Wang

Robert Adolph Ackermann

Yury Danilovich Vinitzky

A method to start a combined unit gas turbine and electrical unit having a static start drive including the steps of: applying a variable frequency voltage from the static start drive to a winding of the generator to accelerate the combined unit to a turbine self-sustaining speed; accelerating the combined unit beyond the self-sustaining speed by applying torque generated by the turbine, and as the combined unit accelerates to a synchronous speed, applying a braking torque from the static start drive to steady the combined unit at the synchronous speed.

Method and apparatus for starting a gas turbine using a polyphase electric power generator

A synchronous generator is disclosed having main power windings and auxiliary power windings, where the auxiliary power winding is coupled to a variable frequency drive system. The variable frequency drive causes the generator to function as a motor and turn a drive shaft to start a gas turbine. Switching circuits are used to connect and disconnect the auxiliary windings of the generator with the variable frequency power supply.

Synchronous generator having auxiliary power windings and variable frequency power source and method for use

A cryogenic cooling system for use with a superconductive electric machine includes a first set of components arranged in a first circuit and adapted to force flow of a cryogen in the first circuit to and from a superconductive electric machine and being operable in a cooldown mode for cooling the cryogen and thereby the superconductive electric machine to a normal operating temperature, and a second set of components arranged in a second circuit and adapted to force flow of a cryogen in the second circuit to and from the superconductive electric machine and being operable in a normal mode for maintaining the cryogen and thereby the superconductive electric machine at the normal operating temperature.

Cryogenic cooling system with cooldown and normal modes of operation

Synchronous generator having auxiliary power windings and variable frequency power source

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Delanson, NY, United States of America

Brian Ernest Baxter Gott