The project topic name is "speed control of ac motor using triac " in these in want total documentation. plese to my mail id uppusravani1995[at]gmail.com
Universal motor speed and dimmer control
With the TRIAC and ST7LITE micro controller
This application describes a traditional design solution for controlling a single-phase motor or any AC load based on phase angle adjustment with a TRIAC or AC switch and a micro-controller as controller. This solution has been greatly improved with new software and ST components. This document contains information on the STEVAL-ILL004V1 evaluation board, including bridge settings, load connection, device and software features. The electronic controller with a TRIAC and a micro controller presented in this document is cost effective and easy to implement for designers. These electronic devices are typically used in appliances or industrial applications.
For various purposes, such as regulating the motor in washing machines, vacuum cleaner Regulation of light in lamps, heating in coffee machines or regulation of the motor in Fans Ana-log solutions are being gradually replaced by micro controller designs even in low cost applications. The advantages include fewer external components, easy adaptation through simple software modifications, control components can be designed with a potentiometer or push button, easy implementation of feedback and flexibility. The functionality of an analogue IC is tied to your application and the designer is limited to fixed device functions.
A single-phase induction motor seems physically similar to a three-phase phase
Induction motor except your stater is supplied with a single phase winding. The rotor of any single-phase induction motor is interchangeable with that of a poly phase induction motor. A single phase winding would produce no rotating magnetic field or starting torque. The stater of a single-phase motor provides an extra winding known as the initial winding.
Single-phase induction motors are small motors that have a wide field of use where a poly phase supply is not available. They are generally used in fans, blowers, washing machines, refrigerators, etc. The speed of the induction motor varied in a narrow range by varying the voltage applied to the stater coil. This speed control method is suitable for such applications where the load varies approximately as the square of speed, such as centrifugal pump units, fan load.