Patent ID: 8247923
Filing Date: 2012-08-21
Classification: H02J,H02M,Y02E

Abstract:
1. 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, coupling a motor shaft of a second DC motor to the generator shaft, when the electric energy produced by the plurality of photovoltaic modules is less than or equal to a predetermined power of the first electric motor, supplying the electric energy produced by the photovoltaic modules only to the first DC motor, and when the electric energy produced by the plurality of photovoltaic modules exceeds the predetermined power of the first electric motor, dividing the electric energy from the plurality of photovoltaic modules among both the first and the second DC motor.