Dynamic stability of grid-connected photovoltaic systems

Author

Rodriguez, C. ; Amaratunga, G.A.J.

Author_Institution

Dept. of Eng., Cambridge Univ., UK

fYear

2004

fDate

10-10 June 2004

Firstpage

2193

Abstract

A mathematical model of grid-connected photovoltaic energy sources suitable for stability studies is presented. The power electronic conditioning unit is modelled from basic power transfer relations. Using this model, it is demonstrated that there exist two solutions for a given power output, one of which is unstable. By doing eigenvalue and eigenvector analysis, dynamic orbits are presented that help visualize any potential problem that may occur under disturbances. Simulations are carried out showing instances where the voltage at the photovoltaic panel collapses, in particular when operating close to the maximum power point.

Keywords

eigenvalues and eigenfunctions; photovoltaic power systems; power system dynamic stability; dynamic orbits; dynamic stability; eigenvalue and eigenvector analysis; grid-connected photovoltaic systems; mathematical model; maximum power point; photovoltaic cells; photovoltaic panel collapses; power electronic conditioning unit; power transfer; solar energy; Eigenvalues and eigenfunctions; Mathematical model; Orbits; Photovoltaic systems; Power electronics; Power system modeling; Power system stability; Solar power generation; Visualization; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Society General Meeting, 2004. IEEE

Conference_Location

Denver, CO

Print_ISBN

0-7803-8465-2

Type

conf

DOI

10.1109/PES.2004.1373271

Filename

1373271