A method for determining a in an electrical conductor of a pulsed nature flowing electrical conductor current and power electronics module

摘要

The invention relates to a method for determining a in an electrical conductor (1, 1a, 1b) of a pulsed nature flowing electrical conductor current (i1, i2) by means of a the electrical conductor (1, 1a, 1b) arranged - rogowski coil (2, 2a, 2b), wherein between the current pulses (10, 12) of the conductor current (i1, i2), by the electric conductor (1, 1a, 1b) flow, no current flows, wherein a pulse information signal (p1, p2) of the beginning (b) and the end (e) of a respective current pulse (10, 12), and wherein a from the rogowski - coil (2, 2a, 2b), because of the electric conductor current (i1, i2) generated measurement signal (u1m, u2m) of an integrator (4, 4a, 4b) in the integration memory (c, ca, cb) is integrated, wherein during the integration of the measuring signal (u1m, u2m) of the integration memory (c, ca, cb), controlled by the pulse information signal (p1, p2), in the period of time from the end (e) of a current pulse (10, 12) to the beginning (b) of a current pulse (10, 12) directly following current pulse (10, 12) is erased, wherein a current measurement signal (u1a, u2a) in dependence of the value of the integration memory (c) is generated. Furthermore, the invention relates to a power electronics module (14).