Outdoor data acquisition system with advanced database for PV modules characterization

This paper presents operational facilities of the outdoor data acquisition system (DAS) developed in Solar Lab for simultaneous longterm performance tests of up to 15 PV modules of any size and type. Data measured and collected by DAS are stored in database, independently for each of the installed modules, and can be accessed on the Solar-Lab´s website. Meteo data are stored in separate database which is public and free accessible while data related to tested modules may be accessed only by authorized persons. If necessary, authorization may be extended on the specified of modules only. Both databases are linked through the special reference records enabling to identify POA insolation and all weather conditions related to each I-V curve measurement. The unique feature of the database is that also full I-V curves of the modules are stored in a special binary file and can be easily accessed through special reference field in the data record.