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1. (WO2018202353) OPTIMIZING SHARED-BUS PHOTOVOLTAIC CHAINS

Pub. No.:    WO/2018/202353    International Application No.:    PCT/EP2018/056801
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Tue Mar 20 00:59:59 CET 2018
IPC: H02J 3/38
Applicants: ELECTRICITE DE FRANCE
Inventors: DENIS, Rémi
BERNE, Erik
RAYNAL, Paul
Title: OPTIMIZING SHARED-BUS PHOTOVOLTAIC CHAINS
Abstract:
A photovoltaic system (1) comprising a plurality of chains (i) of photovoltaic panels (3i,j), each including an output of an optimizer (5i) and a plurality of photovoltaic panels (3i,j) connected in series with one another. The output of each optimizer (5i) being provided with a bidirectional power converter. The optimizers (5i) are supplied with power at input by an input voltage via a bus (9) common to the chains (i). The chains (i) are connected in parallel with one another and in parallel with the input of a common inverter (7). The inverter (7) is connected at output to an external network (2). The system (1) further comprises a control module arranged in such a way as to control the voltage at the input (Vinv_DC) of the inverter (7) over time (t) so as to cancel out, to within losses and on average over a period (T), the energy exchanged between the chains (i) and the bus (9).