Design and Implementation of a Low-Cost I–V Tracer for the Electrical Characterization of Photovoltaic Modules
摘要
Precise control of various parameters of the energy conversion system is required to master photovoltaic renewable energy. One method of determining these parameters is to use an I–V tracer. Various types of I–V curve tracer are available on the market. Paradoxically, many research and educational laboratories working in the field of photovoltaic solar energy do not have access to them due to the cost of these systems. This article therefore presents the design and implementation of a robust, simple and economical I–V curve tracer that can be reproduced by laboratories wishing to do so. Functionality tests show that the I–V curve tracer scans a panel's characteristics in four seconds. These results are satisfactory for a first prototype, considering that commercial I–V curve tracers have a scanning time ranging from 100 ms to a few seconds. In addition to I–V characterization of panels, the system can be used to collect data on irradiation, temperature, and humidity in the target area. This data is useful in many fields, including smart agriculture.