Publisher's Synopsis
In this project is all about, how to control the speed of a single-phase induction motor by the use of cycloconvertor which is being implemented by using thyristors. It becomes difficult to control the speed of induction motors that usually operates at constant speed, which decreases the controllability of the system in which it is being used.In industries (like paper mills) induction motors are extensively used and the speed control of these motors is very complex but important task, in this project a proposed model is begin shown on a single-phase induction motor which could easily by little modifications could be used with thee phase induction motors.Thyristor is used for the purpose of controlling speed as the Ac supply frequency to the induction motors cannot be changed. As the switches are set the microcontroller generates the pulses to trigger the SCR's in a dual bridge. This very concept can be further enhanced and implemented to control the speed of a three-phase induction motor.The single-phase motor finds its application in vacuum cleaners, fans, washing machines, centrifugal pumps, blowers, washing machines, etc.The project uses a microcontroller of 8051 family interfaced to a pair of slide switches for selecting the required speed range as F, F/2 and F/3.
