Design, implementation and performance study of programmable automatic voltage regulator

Abstract

This paper proposes the design and implementation of a Programmable Automatic Voltage Regulator (PAVR) with higher precision, appropriate hysteresis and defense of anomaly. Current systems available locally lack precision and suffer the problem of oscillating between two output voltage and hence creating surge at the output which can damage valuable electronics. To avoid these, the stabilization of power-voltage, minimization of output wave rate and unchangeable power-voltage to the instruments are needed while the load changes. That requires the maintenance of stable voltage and rapid reaction against the sudden change of input voltage and load. This paper defines the shortcomings and introduces a new system in the tolerable and substantial stable of 220V with 14.5% output accuracy for any deviation of input supply voltage within 100V-340V. To control the whole system automatically a microcontroller is used with some protection devices where to detect fault and the circuit implementation in this system are simple and flexible than conventional analog control circuitry. A simulation for both circuit and program has been accomplished for establishing better performance.