Inverter device

An inverter device containing a circuit architecture that converts, to AC power, DC power supplied by a first power supply and DC power supplied by a second power supply that outputs power at a lower voltage than the first power supply. Said inverter device is provided with a first voltage-increasing circuit that increases the voltage of the DC power supplied by the first power supply, a second voltage-increasing circuit that increases the voltage of the DC power supplied by the second power supply, an inverter circuit, and a control unit. The inverter circuit is connected to both voltage-increasing circuits, which are connected to each other in parallel, and converts the power supplied from the voltage-increasing circuits to AC power. For each of the voltage-increasing circuits, the control unit multiplies the following together and uses the product to set a target current for that voltage-increasing circuit: a power value that includes the AC power outputted by the inverter circuit; and the ratio of the DC power in the voltage-increasing circuit in question to the total DC power in the voltage-increasing circuits.