| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent an electric current from flowing backward to a fuel cell by a simple constitution. <P>SOLUTION: A DC/DC converter 3 for the fuel cell arranged between the fuel cell 2 and a traction inverter 6 and a traction motor 7 has: a coil L1 for nonreturn, connected in series to the fuel cell 2; a booster circuit for boosting a direct current voltage which is an output voltage of the fuel cell 2; a resonation circuit for achieving zero current switching of a switch S1 for boosting; and a smoothing capacitor C1 which is connected in parallel to a series circuit consisting of the fuel cell 2 and the coil L1 for nonreturn against the booster circuit and the resonant circuit, and smoothes the output voltage of the fuel cell 2. The DC/DC converter sets impedance of the smoothing capacitor C1 to prevent the electric current outputted from the resonant circuit from flowing backward to the fuel cell 2. <P>COPYRIGHT: (C)2010,JPO&INPIT |
