Ebara Corporation

Ebara Densan Ltd.

Motoyasu Satoh

Tadashi Kataoka

Takahide Ozawa

Noboru Kinoshita

Seiichi Ishihara

Shao-jun Zheng

Terence Mckelvey

A gas turbine generating apparatus according to the present invention comprises a gas turbine capable of a high-speed operation, a permanent-magnet-type generator driven at a high speed by the gas turbine, an inverter device () for converting alternating-current power generated by the generator into commercial alternating-current power, and a system-interconnection device () for interconnecting output of the inverter device to a commercial AC power supply system (). The system-interconnection device controls the inverter device based on voltage of the commercial AC power supply system as a criterion such that output current of the inverter device is in phase with the voltage or out of phase with the voltage by a constant phase difference. A control device () is provided for operating the permanent-magnet-type generator () as a motor at a time of starting the gas turbine, and supplying alternating-current power from a direct-current power supply through the inverter device or another inverter device in addition to the inverter device to the generator for increasing a rotational speed smoothly from zero. The control device detects output current of the inverter device and controls the inverter device to keep the output current constant.

Gas turbine generating apparatus

Gas turbine generator

Growing community of inventors

Tokyo, Japan

Motoyasu Satoh