Comparative study between two and three-level topologies of grid connected photovoltaic converters

Author

Lahouar, Fatma Ezzahra ; Ben Hadj Slama, Jaleleddine ; Hamouda, Mahmoud ; Ben Mustapha, Fakher

Author_Institution

Res. Unit. Adv. Syst. in Electr. Eng., ENISO. Univ. of Sousse, Sousse, Tunisia

fYear

2014

fDate

25-27 March 2014

Firstpage

1

Lastpage

6

Abstract

The main objective of this paper is to achieve a comparative study between two and three-level converters used in transformerless grid connected two-stage photovoltaic systems. For this purpose, a numerical model of the conversion system has been implemented in Matlab/Simulink software. It consists of a PV array feeding a DC/DC converter as well as a three-phase voltage source converter that ensures the power transfer to the grid through a line inductor. The simulation results showed that the three-level voltage source converter has better performance than the two-level topology in terms of line current harmonic distortion (THD) as well as the line inductor´s volume.

Keywords

distributed power generation; harmonic distortion; maximum power point trackers; network topology; photovoltaic power systems; power grids; DC/DC converter; Matlab/Simulink software; PV array; grid connected photovoltaic converters; line current harmonic distortion; line inductor; numerical model; power transfer; three-level converters; three-level topologies; three-phase voltage source converter; transformerless grid; two-level converters; two-level topologies; two-stage photovoltaic systems; Inductors; Maximum power point trackers; Oil insulation; Photovoltaic systems; Reactive power; Topology; Voltage control; 3-level converter; NPC converter; THD; VAR INC MPPT; current control; distributed power generation systems; grid connected converters; photovoltaic system; renewable energy; transformerless;

fLanguage

English

Publisher

ieee

Conference_Titel

Renewable Energy Congress (IREC), 2014 5th International

Conference_Location

Hammamet

Print_ISBN

978-1-4799-2196-6

Type

conf

DOI

10.1109/IREC.2014.6826907

Filename

6826907