POWER SUPPLY DEVICE

摘要

A power supply device includes a first inverter that converts a first direct-current voltage into a first alternating-current voltage and outputs the first alternating-current voltage, and a second inverter that has an output connected in series with an output of the first inverter and converts a second direct-current voltage into a second alternating-current voltage synchronized with the first alternating-current voltage and outputs the second alternating-current voltage. The first (second) inverter has a first (second) peak limiter circuit that inhibits a first (second) switching element from performing a switching operation when a value that is responsive to an output current reaches a first (second) limiter value, and makes the first (second) switching element perform the switching operation when the value that is responsive to the output current is lower than the first (second) limiter value, and a first (second) controlling part that increases the first (second) limiter value based on an increase of the value that is responsive to the output current and the first (second) direct-current voltage.