Selective harmonic elimination using adaptive feed-forward compensation in single-phase stand-alone voltage source inverters

This paper presents a selective harmonic elimination technique using an adaptive feed-forward method for single-phase stand-alone voltage source inverters. The fundamental output voltage control of the inverter is carried out in Synchronous Reference Frame (SRF). Harmonic impedance parameters are estimated to perform selective harmonic compensation. The impedance parameter in stand-alone inverters refers to the equivalent series resistance of the filter inductance and the filter inductance of the LC filter used in the inverter. An adaptive feed-forward method is used for the selective harmonic elimination. The efficacy of the proposed selective harmonic elimination technique in overcoming distortion is illustrated with simulation results.