Monitoring photovoltaic (PV) systems is necessary to assure their proper functioning. Mostly automated data acquisition systems (DAQ) are used for this purpose. Obtained data from DAQ are important for analysing the energy behavior of PV systems with any anomalies that may appear. It helps investors to realize economic calculations which use to estimate the return on investment. The article aims to present an open-source system that allows the acquisition and reliable recording of meteorological parameters that influence in the energy production of PV installations. The measurement processes were tested by different methods in order to comply with the standards of the International Electrotechnical Commission (IEC). © 2021 Published under licence by IOP Publishing Ltd.

This work presents the firsts results of the experimental characterization campaign under outdoor conditions carried out with three different photovoltaic (PV) module technologies: Standard poly-crystalline silicon (poly-Si) aluminum back surface field (Al-BSF) cells, mono-crystalline (c-Si) Heterojunction with Intrinsic Thin-Layer (HIT) cells, and amorphous and microcrystalline silicon (a-Si/µc-Si) thin-film tandem cells. We studied the behavior of these PV technologies and their performance in Lima's desertic and coastal climate during the period from May 2019 to July 2019. For this study, a new outdoor-PV laboratory was implemented at the Pontificia Universidad Católica del Perú (PUCP) with the help of the IDEA research group of the University of Jaén (UJA), Spain. The laboratory enables the characterization of PV modules by extracting the electrical parameters from the current-vo...