Patent ID: 9270141
Filing Date: 2016-02-23
CPC Classification: H02J,Y02E

Claim Text:
1. A method for operating a photovoltaic system having an inverter at whose input terminals a DC output voltage of a photovoltaic generator is applied and whose output is connected to a supply network, and having a battery bank connected by a switch in parallel to the input terminals, the method comprising: adjusting a maximum power point of the photovoltaic generator via a regulating element of the inverter; and operating selectively the photovoltaic generator by setting a voltage value at the input terminals of the inverter, the voltage value and its associated current value are mismatched with respect to the maximum power point of the photovoltaic generator in order to provoke a discharge current from the battery bank to the input terminals of the inverter if a predefinable minimum power of the photovoltaic generator is not achieved, wherein the output of the inverter is continuously connected to the supply network such that an uninterrupted supply of alternating current is provided from the photovoltaic system to the supply network at or above the predefinable minimum power, wherein a voltage measuring sensor is provided in parallel to the battery bank to measure the battery voltage in case of the switch being either open or closed, and wherein the battery, the photovoltaic generator and a DC side of the inverter are simultaneously at a same operating voltage in both a charging state and discharging state.