(University of Management and Technology, 2013) Hussain, Tassawar; Abbas, Irfan; Zaman, Ehsan
The control of induction machines is now moving almost completely from analogue electronic to digital. Therefore the very first reason which motivated us toward this project is that we wanted some digital control (Microcontroller Based) for controlling different speed level of induction motor. Thus it is necessary to develop a digital circuit that control the speed in close loop base. In this project Motor parameters like speed of Motor, line Voltage, Motor load Current, Temperature of Motor body are sensed by Slotted Optocoupler, Potential Transformer, Current transformer, Temperature sensor (LM35) and internal interrupt of micro controller respectively . Then these parameters are monitored by applying limitations and using LED’s to show system status and LCD is used for the Digital Display of above parameter.