摘要 |
A drive system for driving a load (21) by means of a gas turbine (3). The gas turbine comprises a gas generator (5) having a gas-generator rotor (5R) and comprising at least one gas-generator compressor (9) and one high-pressure turbine (11) driving the gas-generator compressor. The gas turbine further comprises a power turbine (7) having a power-turbine rotor (7R), which is torsionally independent of the gas-generator rotor (5R). The load is connected to the power-turbine rotor (7R). The system further comprises an electric motor/ generator (23) mechanically connected to the gas-generator rotor (5R) and electrically connected to an electric power grid (G). The electric motor/generator (23) is adapted to function alternatively: as a generator for converting mechanical power from the gas turbine (3) into electrical power; and as a motor for supplementing driving power to the load (21). A set of movable nozzle guide vanes (15) is arranged at the inlet of the power turbine (7). |