Method for operating photovoltaic system comprising energy store and bidirectional converter for connection of energy store

For the operation of a photovoltaic system (1) comprising an inverter (2), comprising a photovoltaic generator (3) connected to an input (7) of the inverter (2), wherein the inverter (2) presets an operating voltage of the photovoltaic generator (3) at the input (7) and is designed to track an operating voltage of maximum power from the photovoltaic generator (3), comprising an energy store (4) for electrical energy and comprising a bidirectional converter (5), via which the energy store (4), in parallel with the photovoltaic generator (3), is connected to the input (7) of the inverter (2), a time characteristic of the power output by the photovoltaic generator (3) is detected by the converter (5). In a compensation mode, the converter (5) is operated in such a way that it compensates for fluctuations in the power of the photovoltaic generator (3) with respect to a setpoint power flowing via the input (7) into the inverter (2) by virtue of said converter matching the power (PDC) which is output to the input (