Current improvement of a grid-connected photovoltaic system under unbalanced voltage conditions

Author

Mirhosseini, Mitra ; Pou, Josep ; Agelidis, Vassilios Georgios

Author_Institution

Australian Energy Res. Inst., Univ. of New South Wales (UNSW), Sydney, NSW, Australia

fYear

2013

fDate

3-6 June 2013

Firstpage

66

Lastpage

72

Abstract

This paper discusses the performance of a large-scale grid-connected photovoltaic system (GCPS) under unbalanced voltage sag conditions in the grid. By applying the droop control to address the low-voltage-ride-through (LVRT) capability, the output currents are no longer sinusoidal due to the oscillations produced in the current references. To deal with this problem a moving average filter (MAF) technique is proposed. Beside this application, there are other advantages of applying the MAF which are described in this paper. Selected simulation results using MATLAB/Simulink for a 1-MVA GCPS confirm the effectiveness of the proposed method.

Keywords

photovoltaic power systems; power filters; power generation control; power generation faults; power grids; power supply quality; LVRT capability; MAF technique; Matlab-Simulink; apparent power 1 MVA; current improvement; current reference; droop control; large-scale GCPS; large-scale grid-connected photovoltaic system; low-voltage-ride-through capability; moving average filter technique; unbalanced voltage condition; unbalanced voltage sag conditions; MATLAB; Fault-ride-through; Moving average filter; Photovoltaic system; Power system faults; Reactive power support;

fLanguage

English

Publisher

ieee

Conference_Titel

ECCE Asia Downunder (ECCE Asia), 2013 IEEE

Conference_Location

Melbourne, VIC

Print_ISBN

978-1-4799-0483-9

Type

conf

DOI

10.1109/ECCE-Asia.2013.6579075

Filename

6579075