Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Advanced Control of Three-Phase Four-Wire Inverters using Feedback Linearization under Unbalanced and Nonlinear Load Conditions
Authors Nguyen Qui Tu Vo ; Dong-Choon Lee
DOI 10.6113/TKPE/2013.18.4.333
Page pp.333-341
ISSN 1229-2214
Keywords feedback linearization; nonlinear load; three-phase four-wire inverter; unbalanced load
Abstract In this paper, a feedback linearization control is proposed to regulate the output voltages of a three-phase four-wire inverter under the unbalanced and nonlinear load conditions. First, the nonlinear model of system including the output LC filters is derived in the d-q-0 synchronous reference frame. Then, the system is linearized by the multi-input multi-output feedback linearization. The tracking controllers for d-q-0-components of three-phase line-to-neutral load voltages are designed by linear control theory. The experimental results have shown that the proposed control method gives the good performance in response to the load conditions.