| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bidirectional DC/AC inverter which charges a higher voltage battery than a system power source without preparing a special step-up circuit. <P>SOLUTION: The bidirectional DC/AC inverter 10 is equipped with an H bridge circuit 13, which converts AC voltage inputted from a system power source when charging a battery 11 into DC voltage and converts DC voltage inputted when outputting the AC voltage of the bidirectional DC/AC inverter 10 into AC voltage, and outputs it. The H bridge circuit 13 is connected to a joint 15 for system power source via a smoothing filter 14 composed of two coils 22a and 22b and a capacitor 23. A controller 17 controls each switching element S9-S12 of the H bridge circuit 13, so that the two coils 22a and 22b may function as the coils of the step-up circuit, when converting the AC voltage inputted from the system power source into DC voltage to charge the battery 11. <P>COPYRIGHT: (C)2009,JPO&INPIT |
