Method for controlling inverter during startup and control device

Abstract

Provided are a control method and a control device for an inverter being capable of soft start using soft switching without causing a voltage surge or a current surge. A control method for soft start using soft switching of an inverter, the inverter being a bridge circuit with at least two upper and lower arms, the control method including: shifting phases of gate pulses for a switching element of the upper arm and a switching element of the lower arm, which are paired for current energization, from each other to form an overlap period of both the gate pulses; and changing magnitude of the shift to gradually increase the overlap period that defines an energization period to implement the soft start using the soft switching.

Dependencies are inferred from the claim text.