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Improved photovoltaic conversion chain with interleaved method

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5 Author(s)
Cabal, C. ; LAAS-CNRS, Univ. of Toulouse, Toulouse ; Cid-Pastor, A. ; Seguier, L. ; Estibals, B.
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This paper presents a parallel connection of three-cell interleaved boost converters used as an adaptation stage dedicated to photovoltaic applications. Indeed, this structure associated to a MPPT control improves the efficiency and reliability of a photovoltaic power conversion chain. An additional current sharing control has been incorporated to assure a uniform distribution of power between each DC-DC converter. Every voltage and current ripples present on the load and photovoltaic (PV) source implying the switch stresses are reduced with this technique compared to a classical structure. Finally; experimental results show that the proposed technique can be used for impedance matching of a PV array.

Published in:

Power Electronics Specialists Conference, 2008. PESC 2008. IEEE

Date of Conference:

15-19 June 2008