The computation of parameters of induction current sensor based on Rogowski coil

Abstract

This paper presents a simple and practical technique of Rogowski transducers for measuring small currents at low frequencies. The parameters of the Rogowski coil with the affiliate integrator is established to deduce the transfer functions. Main features of a design - such as the time constant of source and time constant of feedback - are described. Relationships between the sensitivity, the bandwidth of the transducers are investigated. Results of Micro-Cap program design are disclosed. In addition, for obtaining the maximum voltage output the effect of matching were considered. Results show that the sensitivity and bandwidth of transducer simply optimized by usage proposed parameters.

Keywords

• low power current transducers
• rogowski coil
• transfer functions
• sensitivity