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Self Reference Algorithm for Precise Outdoor Characterization of PV Modules

  • Outdoor or just on site analyzes of photovoltaic modules can offer some advantages in comparison to indoor Lab stud-ies. In this way the electrical performance is monitored and logged under natural operating conditions in full range of irradiation and temperature. The entirety of monitored IV data allows deriving low-light characteristics of electric parameters, temperature coefficients and root cause analysis for possible degradation. We apply so-called self-reference algorithm in order to increase the accuracy of analysis. The improved precision is due to application of effective acting irradiation and effective temperature instead of externally measured data. Effective irradiation is determined in self-referencing scheme: the short circuit current of the module is assigned to the irradiation.

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Metadaten
Author:B. Hüttl, M. Wachter, L. Gottschalk, Achim Schulze, F. Becker
Parent Title (English):PV-Days Halle 2016
Publisher:PV-Days Halle 2016
Place of publication:Halle
Document Type:Conference Proceeding
Language:English
Publication Year:2016
Tag:Photovoltaic systems, Metrology, Solar Modules
Project Title:PV-Präzis
Funding Agency:BMBF
faculties / departments:Fakultät für Angewandte Natur- und Geisteswissenschaften