APPARATUS AND METHOD OF CONTROLLING OUTPUT OF A SINGLE PHASE GRID CONNECTED INVERTER

摘要

PURPOSE: An apparatus and a method for controlling the output of a single phase grid connected inverter are provided to improve the quality of output current by outputting current from n inverter. CONSTITUTION: An inverter(9) comprises a first switching element and a second switching element. The inverter converts DC voltage into AC voltage. The control unit calculates the phase of the system voltage. The control unit controls a first pulse width modulation signal and a second pulse width modulation signal by compensating the harmonic component separated from the system voltage. The control unit removes a harmonic wave of the output current of the inverter.