A method for error correction in a current measurement in a polyphase power system

The invention relates to a method (37) for measuring the current of phase currents by means of a measuring circuit in a polyphase network, in which by at least one controllable switching element is performed a desired energization of at least one electrical load and act on the switching element control signals to achieve the desired energization of the consumer wherein clock patterns of the drive signals measurement window associated with the current measurement and timing pattern for a desired measurement window size and / or position can be shifted in time, at least one current values ​​having a measurement to current waveform is measured at the current measurement, having an error due to the verschoebenen clock pattern at least, wherein from measuring the current flow, a current having values ​​Direction phase current curve (2) is determined, in which the error causes at least one discontinuity (6). It is contemplated that the occurrence of the discontinuity (6) detects that the jump height of the jump point (6) is determined and that the phase current curve (2) is corrected as a function of step height such that the corresponding one of the jump height current value at the discontinuity subsequent time profile is at least partially subtracted from the current values ​​of the measured current profile or added to it at least partially.