B - Operations – Transporting – 63 – H
Patent
B - Operations, Transporting
63
H
318/43, 342/34.1
B63H 21/16 (2006.01) B63H 21/20 (2006.01)
Patent
CA 1124367
ABSTRACT The invention is a procedure for starting and reversing a gas- turbine-electrical power-plant for an icebreaker, which comprises a light gas-turbine, a synchronous generator, a synchronous or asynchronous propel- ler motor, and switches for travelling ahead and astern. According to the invention, a minimal gas-turbine output for starting, large counter-torques, and braking are predetermined, in that the three-phase windings of the gen- erator and motor are short-circuited with both switches, and the excitation of the generator is adjusted in such a manner that the generator frequency and turbine r.p.m. drop to low values, and that, after the short-circuit is eliminated, the turbine torque is increased by increasing the fuel supply and the generator voltage is adjusted to the value U > UN? where UN is nominal voltage and fN is nominal frequency.
324376
Droste Werner
Kranert Klaus
Fetherstonhaugh & Co.
Licentia Patent-Verwaltungs-Gmbh
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