| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize a power supply circuit device capable of stably obtaining desired output power with the use of two fuel cells. <P>SOLUTION: A switching power supply circuit 11 is operated in a constant current control mode to control an output current value of a fuel cell 101 constant so as to match the output current value of the fuel cell 101 with a reference current value Iref'1. A switching power supply circuit 12 is connected in parallel with an output of the switching power supply circuit 11, and is operated in a constant current control mode to control an output current value of a fuel cell 102 constant so as to match the output current value of the fuel cell 102 with a reference current value Iref'2. The Iref'1 and Iref'2 are the same value at their initial conditions, however, when a difference is generated between the output voltages of the two fuel cells 101, 102, either of the reference current values Iref'1 Iref'2 is made to be increased so as to have the output voltage values of the fuel cells 101, 102 same, and the other is made to be decreased. <P>COPYRIGHT: (C)2009,JPO&INPIT |
