| 摘要 |
PROBLEM TO BE SOLVED: To provide a power conversion device capable of separately charging each DC capacitor constituting a chopper circuit and an inverter circuit.SOLUTION: A power conversion device includes a diode-clamp-type full-bridge inverter 1, a charge resistor 2 limiting a current at the time of charging, a short-circuit switch 3 short-circuiting the charge resistor after charging, a single-phase AC power supply 4, and a reactor 5 connecting the power conversion device to the single-phase AC power supply 4. The full-bridge inverter 1 is constituted from: switching elements sw001 to 004 and sw011 to 014; clamp diodes d001, d002, d011, and d012; and DC capacitors c001 and c002. The charge resistor 2 is connected to the middle point of the element sw002 and the element sw003, and the single-phase AC power supply 4 is connected to the middle point of the element sw012 and the element sw013. Turning on and off of the elements sw002 and sw012 or the elements sw003 and sw013 charges only the DC capacitor c001 or the DC capacitor c002. |
