Patent ID: 7422414

Claim:
An inlet guide vane control device of a gas turbine, which is installed in the gas turbine including a gas turbine body, a combustor, and a compressor with an inlet guide vane, and which exercises opening control of the inlet guide vane, wherein an inlet guide vane opening command is set based on a first inlet guide vane opening set by first inlet guide vane opening setting means such that a temperature of an exhaust gas discharged from the gas turbine body does not exceed a limit value, a second inlet guide vane opening set by second inlet guide vane opening setting means such that a pressure ratio of the compressor does not exceed a surge pressure ratio of the compressor, and a third inlet guide vane opening set by third inlet guide vane opening setting means such that a pressure of the exhaust gas discharged from the gas turbine body does not exceed a limit value.