| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve problems that in a device to take out a DC power source for an auxiliary machine on the way from a fuel cell stack to reach an inverter, the operation or control of the auxiliary machine is affected by the intensification of a temporary current and the noise superposition of a pulse state when a voltage of the stack becomes low. <P>SOLUTION: This system is equipped with the fuel cell stack 1, a DC/AC inverter 2 to convert a direct current from the fuel cell stack 1 into an alternate current by high frequency switching, a DC/DC convertor 3 installed in an electric path branched from between the fuel cell stack 1 and the DC/AC inverter 2 to convert the direct current voltage from the fuel cell stack 1 to a prescribed voltage, the auxiliary machine which is operated by the direct current supplied from the DC/DC converter 3, and a filter circuit which is installed from the branched point up to the DC/DC converter 3 and has a larger time constant than a switching period of the DC/AC inverter 2. <P>COPYRIGHT: (C)2009,JPO&INPIT |
