Method and apparatus for the measurement of dynamic components of an electric current in the presence of a continuous component

摘要

Method for measuring the dynamic component of an electric current (i (t)) circulating in a conductor (2). br / the method comprises a first step in order to convert by magnetic coupling the current to be measured (i (t)) in a first current induced (i1 (t)), and a second step of conversion of current by magnetic coupling, in which the input current is the current induced in the first step of conversion, the current induced in the second step of conversion (si (t)) is applied to an impedance measurement (8), in order to provide an image of the dynamic component of the current to be measured (i (t)). br / is used in metrology and in the regulation, in particular in the power electronics.