Description

This design, featuring the MSP430F47197 device, implements a highly integrated single-chip electricity metering solution, with support for Rogowski coil current sensors. Hardware and software design files are provided to enable calculation of various parameters for multi phase energy measurement, such as RMS current & voltage, active and reactive power and energies, power factor and frequency. The added hardware and software support for Rogowski coils make it easy to interface with Rogowski coils with minimal hardware changes when migrating from traditional current transformers. Rogowski coils traditionally provide a ease of use vs. traditional transformers, utilizing an air coil instead of iron core. The Rogowski coil current sense library implements an efficient software integration of the Rogowski output, enabling this to be a single chip solution for 3-phase e-metering. Software package also includes an example application for quick and easy evaluation of the hardware and software.