METHOD FOR CONTROL OF INVERTERS

摘要

The invention relates to a method for control of the voltage and power of a plurality of RF inverters (2), which are connected in parallel at the output, of an insular inverter installation and for splitting the load between these RF inverters (2), which each comprise at least one DC/DC converter (3), an intermediate circuit (4) and a DC/AC converter (5), with a reference variable (U₁') being formed for each RF inverter in order to preset a nominal value for control of an intermediate-circuit voltage (üz?i) on the intermediate circuit (4) of the RF inverter (2). In each RF inverter (2), a control apparatus (13) determines the load on each RF inverter (2) by measurement of the current required or of the power required, simulates an internal resistance of the RF inverter (2) across which a virtual voltage drop (U_VR) which is dependent on the determined load is caused, which voltage drop is used to control the voltage (U_ZKi) of the intermediate circuit (4), such that this results in a deliberate change in the output voltage of each RF inverter (2).