PWM FED Speed Control of Induction Motor ECE Project for Final Year Students

The induction motor has finding enormous applications in industries in these days, due to its advantages the utilization of induction motors are increasing day by day, so in order to attain proper functionalities we need to regulate the speed of this induction motor, the speed of the induction motor is controlled by resistance control on rotor or stator side, stator voltage control, or by pole changing method but these conventional method are not so effective in controlling the speed of the induction drive so in order to full fill the requirements like low noise, high accuracy, less ware and tear with less operational speed we implemented an new concept in this paper i.e.

Description

“ PWM fed speed control of induction motor controlled by the computer”. Here in this project we generate numerous pulses in every half cycle such that the width of the pulse is less at the end and beginning of the half cycle and maximum at the center, and this width of the pulse varied by the amplitude of the reference sine wave, such that the amplitude of the carrier wave is less than the reference sine wave and these two signals are mixed in the comparator, the output signal frequency is controlled by the modulation index.