DC/AC CONVERSION CIRCUIT, CONTROL METHOD, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To supply a DC/AC conversion circuit capable of easily adjusting a charge voltage and achieving a low loss.SOLUTION: A DC/AC conversion circuit 100 includes: an inverter part 110 with snubberless capacitors; and a MERS (Magnetic Energy Recovery Switch) 120 connected between the inverter part 110 and a load LD. An equivalent reactance of the MERS 120 varies depending on a change of a phase angle at which turning-on and turning-off are switched to each other. The DC/AC conversion circuit 100 controls the equivalent reactance of the MERS 120 by controlling the phase angle of the MERS 120 in a range that a current supplied from the inverter part 110 is delayed from an output voltage of the inverter part 110. Consequently, a power allowed to flow into the load can be adjusted within a range capable of performing soft switching of the inverter part 110.