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Implementation of an Accurate Measurement Procedure to Determinate Maximum Power of Modules at Standard Test Conditions in the Field through Correlation with Measurements Carried out in Laboratory
L. Pérez, J.A. Florez, M. Martínez, E. Alvarez, F. Domínguez, G. Castillo, A. Inza, H. Silva, R. Gómez, M. Fernández, V. Parra, A. Velasco
Quality Control, Characterisation, Characterization, PV, Maximum Power
PV System Performance and Integration
Subtopic: Design and Operation of PV Systems
Event: 33rd European Photovoltaic Solar Energy Conference and Exhibition
Session: 6BO.8.6
1945 - 1949
ISBN: 3-936338-47-7
Paper DOI: 10.4229/EUPVSEC20172017-6BO.8.6
0,00 EUR
Document(s): paper


A quality control procedure for modules has been implemented in a large-scale PV plant in Jordan. The procedure is easy to perform, uses portable equipment and has a relatively low uncertainty yet allowing a proper characterization of a PV module. This procedure is based on a methodology developed years ago by the Instituto de Energía Solar (IES) in Madrid – Spain. The key factor is using a module of the same technology and same Bill of Materials as the modules to be tested. This module must be calibrated in an accredited laboratory. This module will be called Reference Module (RM). On the field, both the RM and the Device Under Test (DUT) must be measured quasi-simultaneously so they both will be measured in the same irradiance and temperature conditions. Since the RM has the same spectral and thermal response as the DUT, a correlation between them could be used to determine the Laboratory Equivalent Maximum Power (LEMP) of the DUT. The simplicity of the procedure allows for rhythms of measurements up to 100 modules per hour, and in the right conditions, yields uncertainties values around 3%.