Method for operating a photovoltaic system and photovoltaic system for carrying out the method

A method for operating a photovoltaic system having a plurality of photovoltaic modules producing electric energy, comprising the steps of:

• connecting the photovoltaic modules to a first DC motor having a motor shaft,
• coupling a generator shaft of a three-phase generator to the motor shaft, wherein the three-phase generator is configured for connection to a power grid,
• connecting a motor shaft of a second DC motor to the generator shaft,
• driving only one of the two DC motors with the electric energy produced by the photovoltaic modules, and
• dividing the electric energy among both the first and the second DC motor.

A photovoltaic system comprising:

• a plurality of photovoltaic modules producing electric energy,
• two DC motors, each having a motor shaft and being configured for connection to the photovoltaic modules to receive a DC voltage and a DC current,
• a three-phase generator having a generator shaft and configured for connection to a power grid for supplying a generated AC voltage, and
• a coupling configured for connecting a corresponding motor shaft of the first and the second DC motor to the generator shaft of the three-phase generator,
• wherein initially only one of the two DC motors is driven with the electric energy produced by the photovoltaic modules and connected via a corresponding coupling to the three-phase generator, and
• the electric energy is subsequently divided among both the first and the second DC motor and the second DC motor is also connected via a corresponding coupling to the three-phase generator.