Method and device for controlling a power source and power source having such a device

Abstract

The invention relates to a method for controlling the power source of a welding, cutting or plasma coating system, wherein the power source comprises a measuring part and a controllable clocked power part and wherein a measure value, which represents a measure of a characteristic variable, that is to be controlled, of the power part, is determined by means of the measuring part, and wherein the measure value is used for controlling the power part. In order to develop the method in such a way that a measure of the characteristic variable to be controlled can be determined within a short time, it is proposed according to the invention that a measured variable correlating with the characteristic variable to be controlled of the power part is at least approximately integrated starting from a prescribed initial value over a prescribed integration time, the duration of which corresponds to one or more clock periods of the clocked power part, and the measure value is determined from the integration value obtained in this way, and that this process is continuously repeated. A device for carrying out the method and a power source having such a device are also proposed.

Dependencies are inferred from the claim text.