Gas turbine engine provided with heat exchanger, and method for starting gas turbine engine

摘要

This method for starting a gas turbine engine is provided with: a primary warming up step in which an inverter motor (IM) is used to maintain the speed of an engine at a partial speed, and a heat exchanger (6) is warmed up using a compressed gas (G1); a secondary warming up step in which the inverter motor (IM) is used to activate a main combustor (2) in a state in which the aforementioned partial speed is being maintained, and the heat exchanger (6) is warmed up by gradually raising the temperature of an exhaust gas (G3); and an acceleration step in which the burning level of the main combustor (2) is increased, and the inverter motor (IM) is used to increase the engine speed until the engine has reached a rated speed.