Modified variable frequency drive that controls two motors at independent speed and direction in industries.

Abstract

In this project report, the design and implementation of a modified compact frequency drive that controls two motors at independent properties scheme based on sinusoidal pulse width modulation (PWM) technique for a single-phase induction motor. Our main aim is to design, implement and program a circuit drive that controls two motors each with independent commands from the Programmable Logic Circuit (PLC) to alter the speed, direction and starting time for each motor unlike the previous designs which control a single motor with some characteristics. This report is intended to provide a basic understanding about VFD terms, VFD operations, Power Factor improvement, simulation model of our design and it’s going to be simulated using Proteus software. This variable frequency drive technique to be implemented is mainly focused in industrial applications, lifts so as to provide accurate operation of motors with improved power factor to minimize power usage and maintenance costs.