| 摘要 |
<P>PROBLEM TO BE SOLVED: To enhance power generation efficiency as the whole of a fuel cell even when a load is varied in parallel operation of a voltage control inverter and a current control inverter. <P>SOLUTION: A fuel cell system autonomously operates two or more fuel cells 10, 110, supplies AC electric power obtained in the parallel operation of a voltage control inverter 11 installed as an inverter for converting DC electric power outputted from these fuel cells to AC electric power and at least one current control inverter 111 capable of switching-over to voltage control to a load. The fuel cell system is equipped with current and voltage detecting means 2, 9 detecting output current and output voltage of the voltage control inverter 11; and a parallel operation control device being input with current and voltage signals detected with the current and voltage detecting means 2, 9, comparing the output electric power of the voltage control inverter 11 obtained from the these current and voltage signals with a first set value previously set, and controlling an operation state of the current control inverter 111 by giving a command lowering or raising a current control set value to the current control inverter 111 based on a compared result. <P>COPYRIGHT: (C)2008,JPO&INPIT |
