Title :
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
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;
Conference_Titel :
IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-61284-969-0
DOI :
10.1109/IECON.2011.6119695
