TRACKING METHOD AND TRACKING DEVICE FOR A VOLTAGE TRANSFORMER FOR A PHOTOVOLTAIC SYSTEM

摘要

The invention relates to a tracking method for a voltage transformer, in particular an inverter, of a photovoltaic system. In said method, an intermediate circuit voltage (UZW) is repeatedly decreased or increased in one direction to lower or higher voltage by voltage steps of a specified magnitude (DeltaU). The method is characterized in that an average rate of change (|DeltaU/Deltat|) of the intermediate circuit voltage (UZW) in a partial time period between two voltage steps is limited by a maximum average rate of change, the maximum average rate of change being defined according to the magnitude of the intermediate circuit voltage (UZW). The invention further relates to a tracking device (10) designed to perform the tracking method and to an inverter equipped with said tracking device.