A simple and accurate PV performance tester microcontroller based with data logger

This paper presents the design and implementation of a tool that allows the simultaneous measurement of Isc, Voc, irradiance, ambient temperature and PV panel temperature. The data collected can be exhibited on a screen or saved to a memory card through a data logger system. The implementation steps are as follows: designing, assembling, individually testing each sensor, and testing the overall system. The performance of this tool is tested by comparing its measurement results to those of conventional measuring instruments. This tool has been proven to measure Isc, Voc, irradiance, ambient temperature and photovoltaic temperature simultaneously. Its measurement results show an average deviation of less than 2% compared to conventional measuring instruments.