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Smart Grid (SG) can be defined as a modern electric power grid infrastructure for improved efficiency, reliability and safety, with smooth integration of renewable and alternative energy sources, through automated control and modern communications technologies. The increased need for more effective control on electrical power systems has led to the development and the increased research interest on...
This paper proposes a practical method for characterization of photovoltaic (PV) systems under uniform radiation and under shading conditions, based on voltage and current graphics. A simple circuit to detect these shading conditions is projected to enhance the visualization of disturb caused by blocking one or more cells of the PV module. Therefore, this circuit is very interactive, because the curve...
In the concept of Smart Grid (SG), reliable and real-time information becomes the key factors. Usually, the alternatives for data acquisition are based on proprietary solutions for dedicated systems using wired communication, cables and various kinds of sensors. The installation and maintenance of these systems are usually much more expensive than the cost of the sensors themselves. An alternative...
This paper proposes a technique for accelerating the convergence to the maximum power point of photovoltaic (PV) systems based on the model obtained from manufacturer’s generator data. The influence of the temperature over the PV array performance is considered, and no measurement of solar radiation is required. Knowledge of the load model and expensive sensor circuitry are not necessary. The tracking...
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