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This paper presents the analysis of six maximum power point tracking techniques: constant voltage, temperature gradient, open-circuit voltage, short-circuit current, perturb and observe, and incremental conductance. The efficiency of these techniques are compared in steady state condition, when irradiance and temperature are kept constant. Their dynamic behavior is also considered, with the variation...
This paper proposes the development of a solar simulator in the parameterization of photovoltaic (PV) modules, employing Light Emitting Diodes (LED) as a light source, with its wavelength very similar to the Sun spectrum. The whole system was built with five types of LEDs, with different wavelengths, in order to emulate the sun spectrum absorbed by silicon PV cells. The LEDs can be activated independently,...
Shading causes significant reduction in energy production in photovoltaic (PV) systems. The negative effects caused by shadowing can be reduced through different techniques, among them, the reconfiguration of PV array electrical connections, stands out. This paper presents an overview of the main techniques used to perform the photovoltaic array reconfiguration, as well as the key features of each...
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