Power Electronics and Control Techniques for Maximum Energy Harvesting in Photovoltaic Systems
by Nicola Femia, Giovanni Petrone, Giovanni Spagnuolo, Massimo Vitelli
1.1 From the Photovoltaic Cell to the Field
Photovoltaic (PV) generators are made of a number of PV cells connected in series and in parallel. The type of connection depends on the voltage and current levels at which it is desired that the power processing system dedicated to the PV generator works. The right choice of the values of such electrical variables is of fundamental importance in determining the efficiency of the switching converters that condition the power produced by the PV generator in order to feed the AC mains or recharge a battery. Unfortunately, in usual applications the voltage and current levels of the PV generator cannot be referred to a single PV cell. In fact, cells are arranged into PV panels, which ...
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