AC CURRENT SENSOR HAVING HIGH ACCURACY AND LARGE BANDWIDTH

摘要

A method and apparatus for processing an output of an inductive sensor, including integrating the output of the inductive sensor with an integrator, having a transfer function with at least two zeros, and at least three poles having characteristic frequencies above the zeros, having a greater number o f said poles than said zeros, wherein an integration is performed at frequenci es above the characteristic frequencies of the poles, and low frequency noise i s substantially rejected at frequencies below the poles. The inductive sensor may be, for example, a Rogowski coil.