Three-Phase Electronic Watt-Hour Meter Using the MSP430F677x


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The TI’s MSP430F677x devices belong to the powerful 16-bit MSP430F6xx platform, which brings in many new features and provides flexibility to support robust poly-phase metrology solutions. These devices find their application in energy measurement and have the necessary architecture to support them. This application report describes the implementation of a three-phase electronic electricity meter using the MSP430F677x metering processor. The key¬†parameters calculated during energy measurements are: RMS current and voltage, active and reactive power and energies, power factor, and frequency. A 32-bit x 32-bit hardware multiplier on this chip further accelerates the math intensive operations during the energy computation. The application report has complete metrology source code provided as a zip file.

3-phase watt meter

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