Modeling Of Three-Phase Harmonic Rectification Scheme Using Three-Phase Inverter As A Current Injection Device

In this paper, new harmonic reductions of the three-phase rectification concept with harmonic current injection technique are presented using three-phase inverter as a current injection device. The injection current based on zero-sequence triplen-odd harmonic will automatically generate and then circulated through the AC side of the three-phase rectifier via the Zig-Zag transformer which provides low-leakage impedance for the current harmonics generated, resulting in pure sinusoidal input current in the three-phase diode bridge rectifier. The modeling and simulation of the new proposed current injection device are verified and compared with a 1.5-kVA prototype.