Three-phase nine switch inverter for a grid-connected photovoltaic system

Author

Fernao Pires, V. ; Sousa, Duarte M. ; Martins, J.F.

Author_Institution

Escola Super. Tecnol. Setubal, Inst. Politec., Setúbal, Portugal

fYear

2013

fDate

20-23 Oct. 2013

Firstpage

1078

Lastpage

1083

Abstract

In this paper it is presented a three-phase nine switch inverter for a grid-connected photovoltaic (PV) system. The structure of this power converter is based on the classical three-phase voltage source inverter. However, it requires three extra bi-directional switches and presents a multilevel characteristic. Thus, reducing switching frequency and/or inverter ac voltages with reduced THD are obtained. To control this power converter a sliding mode controller associated to vectorial modulator is used. The performance of the proposed PV system is verified by time-domain simulation studies.

Keywords

invertors; photovoltaic power systems; power conversion harmonics; power grids; time-domain analysis; variable structure systems; THD; ac voltages; bi-directional switches; grid-connected photovoltaic system; multilevel characteristic; power converter; sliding mode controller; switching frequency; three-phase nine switch inverter; three-phase voltage source inverter; time-domain simulation; vectorial modulator; Conferences; Decision support systems; Renewable energy sources; Yttrium; Photovoltaic system; nine switch inverter; sliding mode controller; three-phase voltage source converter;

fLanguage

English

Publisher

ieee

Conference_Titel

Renewable Energy Research and Applications (ICRERA), 2013 International Conference on

Conference_Location

Madrid

Type

conf

DOI

10.1109/ICRERA.2013.6749913

Filename

6749913