Apparatus and Method for reducing harmonic waves in grid-connected inverter

摘要

The output current harmonic reduction device of the grid-connected inverter according to an embodiment of the present invention detects the phase of the inverter phase current and the voltage between the grid lines of the grid-connected inverter, and based on the detected information, each phase of the grid-connected inverter A distortion current detection function generator for generating a distortion current detection function; And a current controller for controlling an operation of the grid-connected inverter such that an alternating current including a harmonic current is removed from the transformer stage of the grid-connected inverter using the distortion current detection function.