Kawasaki Jukogyo Kabushiki Kaisha

Takefumi Iizaka

Kazushige Sugimoto

Yuko Hirase

Kentaro Sakata

Masahide Kawamura

Mitsuchika Ogawa

Kentaro Tsuda

A first internal phase difference angle calculator for integrating a deviation between a first frequency command value and a frequency obtained by frequency obtaining device to calculate a first internal phase difference angle, a first internal electromotive voltage command value calculator for proportioning and calculating a deviation between a first reactive power command value and a reactive power obtained based on the value measured by first measuring device, and adding a reference voltage to the deviation so as to calculate a first internal electromotive voltage command value, and a first current command value calculator for calculating a command value of an output current from a first power converter based on the first internal phase difference angle, the first internal electromotive voltage command value, and a voltage measured by the voltage measuring device. The apparatus controls the first power converter based on an output from the first current command value calculator.

Combined power generation system having power converting apparatus

The present invention provides an electric power converting unit that does not require a change in a control method in, for example, system interconnection by calculating a target value of an output current of an electric power converter from an internal phase angle calculated from an active electric power control loop and an internal electromotive voltage calculated from a reactive electric power control loop. Thus, a stand-alone power supply system that is easy to handle can be configured.

Electric power converter for combined power generation system

Growing community of inventors

Kobe, Japan

Takefumi Iizaka