Development of the Electronic System for Obtaining the I-V and P-V Curves of Photovoltaic Module Using a Personal Computer

The test, construction and design of an electronic system in order to measure the electrical characteristic curves of the photovoltaic (PV) module is reported, this electronic system reflects toward the PV module a variable resistance, sampling and capturing the PV module current and voltage, after using software the current and voltage signals are process in order to determinate the power, and also the PV module currentvoltage and power voltage curves are gotten, This information is used for engineers who design PV systems to supplies electrical energy from sun energy to whatever equipment, the electronics circuit was made using electrical and electronics devices bought in México. Experimental results were done with 20 W. PV modules manufactured in CINVESTAV Mexico.