Microcontroller Based Control Of Three Phase Induction Motor

]OJ J International

Conference

011

Electrical Energy

and NeT11'orksr7CEEN

Micro controller Based Control of Three Phase Induction Technique S.M.Wank..hede, R.M.Holmukhe,

Miss.A.M.Kadam,

Motor Using P\Vl\1

Electrical Engineering Department Deemed University College of Engineering, "Scientist, DRDO, Pune, India. Email ID: rajeshmholmukhergjhotmail.com

Pune, India

using pulse width modulation technique. Here the speed of the motor is controlled by sensing the rprn and current valve of the rpm. The current value of rpm i 5 sensed by inductive magnetic switch and its output is fed :0 the micro controller. The micro controller compares the current value of the rprn with set values and adjusts the rime period ef the pulses applied to the stator to control the frequency of the stator. This system can be used effectively in the industrial applications to control the speed of the 3 phase induction motor. II. BLOCK DIAGRAM A~D

Keywords.cchnicue

microcontroller,

induction

motor,

I

Miss.P.R shinde, *p.s.Chaudhari

Bharati Vidyapeeth

Abstract-The speed of the induction motor can be controlled by various methods. The stator frequency control is one of simplest methods to control the speed of the Induction motor. The micro controller based speed controlling system can be used in various industries such as chemical, textile and cement to operate the motor according to the desired speed. This is completely dosed loop system and the speed of the motor will be controlled automaucally by use. of feed back from motor in term of rpm , The inductive magnetic sensor can be interfaced .with micro controller easily and can sense rp m of the motor and giv'e it to micro controller in digital form as a feed back from motor.

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INTRODUCT10N

1;-.;;]3!-;Y of the industrial applications, an electric motor is tile most imporrant component. A complete production unit

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C,l;1SiSt5 primarily of three basic components; an electric motor, an energy- transmining device and L'1eworking (or driven) machine.An electric motor is the source of motive power. An energy- transmitting device delivers power from electric motor to the driven machine (or the load); it usually consists of shaft, belt, chain rope etc. The electric motor is widely classified as I. A.C Motor '1 D.CMotor Several industrial applications need adjustable speeds for their efficient operation. The various methods of speed Control semiconductor devices are as follows: I. Stator voltage control 2. Stator frequency control , Stator voltage and frequency control 4. Stator current control -. Static rotor- resistance control 6. Slip-energy recovery control

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