Patent ID: 9647525
Date: 2017-05-09
CPC Classifications: H02H,H02M

Claim:
1. A power supply device, comprising: a first inverter that converts a first direct-current voltage into a first alternating-current voltage based on a switching operation of a plurality of first switching elements forming a first bridge circuit and outputs the first alternating-current voltage; and a second inverter that converts a second direct-current voltage into a second alternating-current voltage synchronized with the first alternating-current voltage based on a switching operation of a plurality of second switching elements forming a second bridge circuit and outputs the second alternating-current voltage, wherein the first inverter has: a first limiter value setting part that sets a first limiter value; a first peak limiter circuit that inhibits the first switching elements from performing the switching operation when a value that is responsive to an output current reaches the first limiter value, and makes the first switching elements perform the switching operation when the value that is responsive to the output current is lower than the first limiter value; and a first controlling part that increases the first limiter value based on an increase of the value that is responsive to the output current and the first direct-current voltage, and the second inverter has: a second limiter value setting part that sets a second limiter value; a second peak limiter circuit that inhibits the second switching elements from performing the switching operation when the value that is responsive to the output current reaches the second limiter value, and makes the second switching elements perform the switching operation when the value that is responsive to the output current is lower than the second limiter value; and a second controlling part that increases the second limiter value based on an increase of the value that is responsive to the output current and the second direct-current voltage.