APPARATUS FOR CONTROLLING INVERTER

PROBLEM TO BE SOLVED: To provide an apparatus for controlling an inverter, which stably restarts an electric motor by compensating for an output frequency to reduce a current generated by a slip frequency at the time of restarting the electric motor.SOLUTION: The present invention relates to an apparatus for controlling an inverter. The apparatus for controlling an inverter according to one embodiment determines the phase of a command voltage in a restart section taking into account the frequency of an input voltage to an electric motor when an input power is reduced to a rated power or less, the frequency of the input voltage to the electric motor at the time of restarting, a time period for generating a torque, and the phase of the input voltage to the electric motor at the time of the restarting.SELECTED DRAWING: Figure 3 【課題】出力周波数の補償を通じて、電動機の再起動の際、スリップ周波数により発生する電流を減少させ、安定的に電動機を再起動するインバータ制御装置を提供する。【解決手段】本発明は、インバータ制御装置に関する。一実施例に係るインバータ制御装置は、入力電源が定格以下に減少した時点の電動機の入力電圧の周波数、再起動時点の前記電動機の入力電圧の周波数、トルクの発生のための時間及び再起動時点での前記電動機の入力電圧の位相を考慮して、再起動領域において指令電圧の位相を決定する。【選択図】図３