A simple DQ current controller for single-phase grid-connected inverters

Author

Ebrahimi, Mohammad ; Khajehoddin, S. Ali

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Alberta, Edmonton, AB, Canada

fYear

2015

fDate

15-19 March 2015

Firstpage

2840

Lastpage

2845

Abstract

This paper presents a simple method to generate the grid current orthogonal component for a DQ current controlled inverter. Proposed method exhibits good steady state response and improved dynamic performance in comparison to the conventional Orthogonal Signal Generation (OSG) techniques. The improved characteristics of the proposed method enables the realization of Low-Voltage Ride-Through (LVRT) feature in single-phase grid-connected inverters. Simulation and experimental results show the feasibility and performance of this control structure approach.

Keywords

electric current control; invertors; power grids; DQ current controller; control structure approach; dynamic performance improvement; grid current orthogonal component generation; low-voltage ride-through feature; single-phase grid-connected inverters; steady state response; Harmonic analysis; Inverters; Phase locked loops; Power harmonic filters; Steady-state; Voltage control; Voltage fluctuations; Current Control; DQ Frame; Low Voltage Ride Through; Orthogonal Quantity; Rotating Reference Frame; Single Phase Grid Connected Inverter;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2015 IEEE

Conference_Location

Charlotte, NC

Type

conf

DOI

10.1109/APEC.2015.7104753

Filename

7104753