INVERTER DEVICE AND AIR CONDITIONER

摘要

An inverter device includes: a rectifier circuit that converts an AC power supply into a DC power supply; a smoothing unit that is connected to a subsequent stage of the rectifier circuit; a short-circuit unit that short-circuits the AC power supply via a reactor that improves a power factor of the AC power supply; an inverter unit that converts a direct current from the smoothing unit into an alternating current; and a control unit that controls the inverter unit, wherein a gate drive circuit is connected to a gate terminal of each switching element in the inverter unit, the gate drive circuit includes a first gate voltage line and a second gate voltage line having a voltage value larger than a voltage value of the first gate voltage line, and the voltage value of the first gate voltage line is variable even during an operation of the inverter device.

主权项

1. An inverter device comprising:
a rectifier circuit that converts an AC power supply into a DC power supply; a smoothing unit that is connected to a subsequent stage of the rectifier circuit; a short-circuit unit that short-circuits the AC power supply via a reactor that improves a power factor of the AC power supply; an inverter unit that converts a direct current from the smoothing unit into an alternating current; and a control unit that controls the inverter unit, wherein a gate drive circuit is connected to a gate terminal of each switching element in the inverter unit, the gate drive circuit includes a first gate voltage line and a second gate voltage line having a voltage value larger than a voltage value of the first gate voltage line, and the voltage value of the first gate voltage line is variable even during an operation of the inverter device.