Patent ID: 7250690
Filing Date: 2007-07-31
Classification: F01D,F02C,H01M,H02P,Y02B,Y02E

Abstract:
1. A distributed-power-generation system, comprising: a fuel cell; a turbine in flow communication with the fuel cell; a compressor supplying air to the fuel cell; a motor/generator in mechanical communication with the turbine; an inverter unit including a rectification circuit, a smoothing circuit, a DC/DC converter, and a main inverter; a chargeable battery connected to the DC/DC converter and the motor/generator; a sensor that senses a rotation speed of a rotation axis of the motor/generator; and a control unit in communication with the chargeable battery and the motor/generator, the control unit comparing the rotation speed of a rotation axis of the motor/generator with a predefined reference speed and controlling a current from the chargeable battery to the motor/generator based on the comparison for changing a frequency of an AC power that is output from the motor/generator; wherein the chargeable battery is charged with a current from the DC/DC converter.