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Erschienen in:
2018 | Supplement | Buchkapitel
Extracting the I-V Characteristics of the PV Modules from the Manufacture’s Datasheet
verfasst von : Andreea Sabadus, Marius Paulescu, Viorel Badescu
Erschienen in: Nearly Zero Energy Communities
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Abstract
Proper knowledge of the I-V characteristics of a PV module is a key requirement for accurate estimation and forecast of energy production. By using the scarce information provided in the manufactures’ datasheet (short circuit current, open circuit voltage and the maximum power point), the mathematical description of the I-V characteristic is always a challenge. In this paper two procedures for extracting the I-V characteristics in standard test conditions (STC) are discussed. The procedures, based on the Taylor’s series expansion of the current equation, are developed within the frame of the one diode model. The results are assessed by using the datasheets of four different crystalline PV modules, commercially available. The estimated parameters are also compared with the ones previously reported for the same PV modules. Generally, the results show that while the models reproduce accurately the I-V characteristics, the parameters values experience a large dispersion.