Validation of the software for digital processing of a Rogowski coil output signal

An inductive sensor (Rogowski coil) — based digital measuring system able to operate in any frequency range both in steady state and in transient duty, which uses a self-developed numerical integration system, is presented in this paper. Besides, the measuring system has an extended input signal range achieved by using a nonlinear input attenuator. Software validation is done by using the analytical expression of some typical signals appearing in heavy current technique, power electronics and electromagnetic compatibility applications.