A low-disturbance diagnostic function integrated in the PV arrays´ MPPT algorithm

Author

Sera, Dezso ; Mathe, Laszlo ; Kerekes, Tamas ; Teodorescu, Remus ; Rodriguez, Pedro

Author_Institution

Dept. of Energy Technol., Aalborg Univ., Aalborg, Denmark

fYear

2011

fDate

7-10 Nov. 2011

Firstpage

2456

Lastpage

2460

Abstract

This paper focuses on the estimation of series resistance changes for flat silicone PV panels or arrays during operation, without moving the operating point far away from the Maximum Power Point¹. The method is based on the measurement of the slope of the IV curve at a current level that differs from the short-circuit current with a fixed value, regardless of irradiance conditions. The method causes less power loss and power ripple due to measurements and it is easily integrated in a hill-climbing MPPT algorithm.

Keywords

fault diagnosis; maximum power point trackers; photovoltaic power systems; short-circuit currents; PV array MPPT algorithm; flat silicone PV panels; hill-climbing MPPT algorithm; irradiance conditions; low-disturbance diagnostic function; maximum power point; power loss; power ripple; series resistance estimation; short-circuit current; slope measurement; Current measurement; Electrical resistance measurement; Estimation; Photovoltaic systems; Resistance; Temperature measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society

Conference_Location

Melbourne, VIC

ISSN

1553-572X

Print_ISBN

978-1-61284-969-0

Type

conf

DOI

10.1109/IECON.2011.6119695

Filename

6119695