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).