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Methods and apparatus for controlling at least part of a start-up or re-light process of a gas turbine engine
Methods and apparatus for controlling at least part of a start-up or re-light process of a gas turbine engine
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机译：用于控制燃气涡轮发动机的启动或重新点燃过程的至少一部分的方法和设备
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摘要
A method (200) of controlling at least part of a start-up or re-light process of a gas turbine engine (10), the method (200) comprising: controlling (114) ignition within a combustion chamber (16) of the gas turbine engine (10); controlling (112b, 302) rotation of a low pressure compressor (14) using a first electrical machine (54), and controlling (304) rotation of a high pressure compressor (15) using a second electrical machine (56), the combustion chamber (16) downstream of the low pressure compressor (14) and high pressure compressor (15); determining (214) if an exit pressure of the high pressure compressor (15) is equal to or greater than a self-sustaining threshold pressure; and in response to determining that the exit pressure of the high pressure compressor (15) is equal to or greater than the self-sustaining threshold pressure, ceasing (308) controlling rotation of the low pressure compressor (14) using the first electrical machine (54), and/or the high pressure compressor (15) using a second electrical machine (56), such that operation of the gas turbine engine (10) is sustained by air drawn through the gas turbine engine (10).
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