Sensitivity analysis of a new approach to photovoltaic parameters extraction based on the total least squares method

The degradation of photovoltaic modules and their subsequent loss of performance has a serious impact on the total energy generation potential. The lack of real-time information on the output power leads to additional losses since the panels may not be operating at their optimal point. To understand...

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Bibliographic Details
Published in:Metrology and Measurement systems 2021-01, Vol.28 (4), p.751-765
Main Authors: Mesbahi, Oumaima, Tlemçani, Mouhaydine, Janeiro, Fernando M., Hajjaji, Abdeloawahed, Kandoussi, Khalid
Format: Article
Language:English
Subjects:
Algorithms
Circuits
Comparative studies
Least squares method
mpp
parameter extraction
Parameter identification
Parameter sensitivity
Photovoltaic cells
photovoltaic modules
Sensitivity analysis
total least squares
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Summary:The degradation of photovoltaic modules and their subsequent loss of performance has a serious impact on the total energy generation potential. The lack of real-time information on the output power leads to additional losses since the panels may not be operating at their optimal point. To understand the behaviour, numerically simulate the characteristics and identify the optimal operating point of a photovoltaic cell, the parameters of an equivalent electrical circuit must first be identified. The aim of this work is to develop a total least-squares based algorithm which can identify those parameters from the output voltage and current measurements, taking into consideration the uncertainties on both measured quantities. This work presents a comparative study of the Ordinary Least Squares (OLS) and Total Least Squares (TLS) approaches to the estimation of the parameters of a photovoltaic cell.
ISSN:2300-1941
2080-9050
2300-1941
DOI:10.24425/mms.2021.137707