INVERTER DEVICE

Abstract(summary):

An output voltage (Vout1) of an active filter circuit (10), which boosts and smoothens a direct-current voltage (Vin), is converted into an alternating-current voltage by means of an inverter circuit (20). The active filter circuit (10) is equipped with a capacitor (Cdc) and a rectifying component (11S) that are connected between input and output parts. Additionally, the active filter circuit has an inductor (L1) that is connected to the input part at one end with the other end being connected to the output part via the rectifying component (11S), a switching component (12S) that is connected between the other end and a low-potential side line, and a first control circuit (30) for the switching component. The inductor (L1) stores energy when the switching component (12S) is closed, and discharges the energy when the switching component (12S) is opened. The rectifying component (11S) conducts electricity in the direction the energy stored in the inductor (L1) is discharged. Consequently, an inverter device that is capable of sufficiently suppressing rippling of an input voltage to the inverter device without requiring a large-capacity smoothing capacitor can be provided.