Design & Implementation of Micro Controller based Monitoring and Control System for Current, Voltage, Frequency and Phase of three phase AC supply

Abstract

This paper presents an advanced configuration for the development of monitoring & Control System for the measurement of voltage, frequency & identification of phase sequence based on AVR atmega microcontroller. Simulation of complete model is substantiated on Proteus software while designed hardware system has been endorsed with online AC mains 3phase supply. Its cardinal purpose is to supersede the conventional method, used for the detection of phase unbalance & identification of phase sequence, operate on induction principle. Notwithstanding, it infers alike zero crossing detection method, for developing an algorithm used for monitoring of 3 phase supply and control forthwith, if incorrect phase sequence is detected. With a few fundamental revamps, algorithm is simply modifiable for multi phase detection with wide range of frequencies and voltages as desired. Phase detection has its own significance in industrial applications like installation and commissioning of induction motor. This configuration allows the distant observer to control the output supply in case of any aberration. The monitoring unit is capable of highlighting the anomaly in input supply and its repercussion on output supply.