| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve a problem of increase in size and weight of a power conversion device caused by the necessity for a multi-phase transformer in a multiplex conversion device using a plurality of unit converters.SOLUTION: An input side H bridge circuit B1 and an output side H bridge circuit B2, each of which is composed of a bidirectional switching element and a capacitor, are provided on the AC input side and AC output side, respectively. Switching elements S5, S7 and S6, S8 for performing ON/OFF control of current flowing bidirectionally between the H bridge circuits are connected between the positive sides of capacitors C1, C2 configuring the respective H bridge circuits and between the negative sides of the capacitors C1, C2, respectively. An input terminal IN and a neutral point MP1 are provided in the input side H bridge circuit B1; and a neutral point MP2 and an output terminal OUT are provided in the output side H bridge circuit B2. Thereby, a unit AC-AC conversion device is configured.</p> |
