A comparative analysis between a DC power transformer and a DC power gyrator on equal bases of operation is presented. The synthesis and classification of power gyrators is presented in this thesis. The second corresponds to the steady state behavior of a dc power gyrator. The first concept corresponds to the classical model of the ideal behavior of a dc-dc switching converter in steady state. For that, two different approaches have been considered, the dc transformer and the dc gyrator. In this thesis, the problem is studied systematically from a power interface point of view in order to obtain high levels of efficiency, reliability and flexibility. Although there are many works devoted to the problem of the maximum power point tracking (MPPT) in a PV array, only few of them deal with the nature of the power interface while most of them focus on different types of tracking algorithms. The impedance matching between a PV array and a DC load is a technological problem that basically means the maximum power transfer from a PV panel to a DC load. The connection between a photovoltaic array and a DC load is still an interest topic of research.
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