Design of feedback laws for dc-to-ac conversion in photovoltaic systems

Author

Cid-Pastor, Angel ; Alonso, Corinne ; Cugat-Curto, Jose F. ; Estibals, Bruno ; Martinez-Salamero, Luis

Author_Institution

Lab. d´´Autom. et d´´Anal. des Syst., CNRS, Toulouse, France

fYear

2004

fDate

25-28 March 2004

Firstpage

93

Lastpage

98

Abstract

One-phase dc-ac stand-alone conversion for a photovoltaic standard panel is analyzed in this paper. A modular structure consisting of the cascade connection of a voltage step-up dc-to-dc switching converter with galvanic isolation and a buck converter-based inverter stage is proposed. Different feedback laws for the inverter stage are investigated to guarantee output voltage regulation. A comparative analysis of the modular structure performance under voltage-mode control, current-mode control and optimal control based on linear quadratic regulator (LQR) approach is studied by means of simulation.

Keywords

DC-AC power convertors; electric current control; invertors; linear quadratic control; photovoltaic power systems; switching convertors; voltage control; buck converter based inverter; cascade connection; current mode control; feedback laws; galvanic isolation; linear quadratic regulator; one phase dc-ac stand alone conversion; optimal control; photovoltaic standard panel; photovoltaic systems; voltage mode control; voltage regulation; voltage step-up dc-dc switching converter; DC-DC power converters; Galvanizing; Inverters; Optimal control; Output feedback; Performance analysis; Photovoltaic systems; Solar power generation; Switching converters; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Motion Control, 2004. AMC '04. The 8th IEEE International Workshop on

Print_ISBN

0-7803-8300-1

Type

conf

DOI

10.1109/AMC.2004.1297648

Filename

1297648