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CONFERENCE PAPER
A low-disturbance diagnostic function integrated in the PV arrays' MPPT algorithm
Location: Australia
Publication date: 2011-11-10
Published in: Annual Conference of the IEEE Industrial Electronics Society 2011, Melbourne (Australia) - IECON 2011
ref. DOI: 10.1109/IECON.2011.6119695
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Sera, D. , Mathe, L. , Kerekes, T. , Teodorescu, R.

 

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.