Microcontroller Based Speed Control of Induction Motor using Wireless Technology
P. Nagasekhara Reddy

Mr. P.Nagasekhara Reddy, Sr. Assistant Professor, Department of Electrical and Electronics Engineering, MGIT, Hyderabad-500075, Andhra Pradesh, India
Manuscript received on July 11, 2013. | Revised Manuscript received on July 15, 2013. | Manuscript published on July 25, 2013. | PP: 61-65 | Volume-1 Issue-9, July 2013. | Retrieval Number: I0389071913/2013©BEIESP

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© The Authors. Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: Induction motors are the most extensively used motors in most power-driven home appliances, agricultural and industrial applications. Simple and rugged design, low cost, low maintenance and direct connection to an AC power source are the chief advantages of an AC induction motor. Many applications need variable speed operation and one of them is a simple fan load. The DTMF generator which generates the analogue output signal for the corresponding button pressed using key pad. This analogue output is fed to the FM Transmitter and sent through the antenna. At the other end, the FM Receiver picks up the signal and feeds it to the signal decoder, there the decoding takes place and this decoding data is given to the PIC Micro controller. The software in the PIC receives the signal and accordingly drives the SCR Circuit, which in turn is connected to load serially. Simulation of DTMF is carried out using SIMULINK and in the experimental work a prototype model is built through the PIC microcontroller (PIC 16F873) which is used to generate the PWM pulses for speed control of the motor. The main aim of the this paper is to design an real time electronic control system that can be used to control the speed of motors kept at remote locations using an embedded technology.
Keywords: Induction Motor (IM), DTMF(dual tone multiple frequency), Transmitter, Receiver, Pulse Width Modulation (PWM), Peripheral Interface Controller (PIC), DTMF, wireless technology, Speed control.