| 摘要 |
PROBLEM TO BE SOLVED: To provide a power conversion device in which a capacitor charge circuit is formed from a little components and which is adaptable to hot swap that enables, while an inverter and a converter of at least one power conversion unit are operated, a capacitor of at least another power conversion unit to be charged and connected.SOLUTION: The power conversion device comprises a plurality of power conversion units each formed from a converter, an inverter and a chopper. The power conversion device comprises: a first circuit breaker that is provided between a chopper circuit input terminal that is built in a first power conversion unit among the plurality of power conversion units, and a DC reactor that is connected to a DC power source; and a second circuit breaker for connecting a positive electrode terminal of another second power conversion unit that is different from the first power conversion unit, the DC power source and the DC reactor. When connecting the second power conversion unit in parallel while the first power conversion unit is operated, by closing the first circuit breaker and the second circuit breaker, the chopper circuit input terminal and the positive electrode terminal are connected via the reactor.SELECTED DRAWING: Figure 5 |
