GAS TURBINE ENGINE AND METHOD FOR STARTING SAME

摘要

A starting method for a gas turbine engine includes a primary warming step of warming up the gas turbine engine while a constant primary warm-up rotation speed is maintained by an inverter motor and a secondary warming step of warming up the gas turbine engine while a constant secondary warm-up rotation speed is maintained by further increasing the speed of the inverter motor. The primary warming step terminates when an electric power required by the inverter motor attains a predetermined preset electric power value. The preset electric power value is so chosen as to decrease as the intake air temperature is low.

主权项

1. A method of starting a gas turbine engine including a compressor to compress an intake air to thereby generate a compressed gas, a combustor to burn the compressed gas to thereby generate a high temperature, high pressure combustion gas, a turbine driven by the combustion gas, and a starter device in the form of a rotating machine which concurrently serves as an electric power generator driven by the turbine, the starter device including an inverter motor, which method comprises:
a primary warming step of warming up the gas turbine engine while a constant primary warm-up rotation speed is maintained by the inverter motor; and a secondary warming step of warming up the gas turbine engine while a constant secondary warm-up rotation speed is maintained by further increasing the speed of the inverter motor.