METHOD FOR OPERATING AN INVERTER, INVERTER, AND PHOTOVOLTAIC SYSTEM

摘要

The invention relates to a method for operating an inverter (3), the DC voltage input (17) of which is connected to a positive pole (PV+) and a negative pole (PV-) of a PV generator (2). A potential of the positive and/or the negative pole (U PV+ , U PV- ) of the PV generator (2) is determined with respect to a ground potential (12) by means of a monitoring means (5). On the basis of the previously determined potential (U PV+ , U PV- ), a modulation method is selected for actuating power switches of the inverter (3) from a number of modulation methods stored in a storage device (8) of the inverter (3). The selected modulation method is used to actuate the power switch in order to convert the DC input voltage into an AC output voltage. The invention further relates to a correspondingly designed PV system and an inverter which is designed to carry out the method.