1. Automatic control of three phase
Induction motor
Name of the industry:- ELCEN Machines Pvt. Ltd.,Vadodara.
Guided By:-
Internal Guide:-Mukesh M Bhesania
External Guide:-Dhankesh Patel
Prepared by
Gunjan Dave(090110109023)
Jalpam Suthar(090110109030)
Viral Shah(090110109065)
AUTOMATIC CONTROL OF INDUCTION
MOTOR
1Aug 12, 2015

2. AbstractAbstract
The project is about Automatic remote control
of Induction motor.
It will be achieved by use of a GSM based
system which will isolate the object(induction
motor)from the healthy system during faulty
conditions like overvoltage, over current, and
overload.
AUTOMATIC CONTROL OF INDUCTION
MOTOR
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3. Idea of the projectIdea of the project
 To detect the line voltage and current and compare
with the preset limits.
 If the input fed is out of the domain of the safe
limits then the system will send an SMS to the
registered number and will also sound a buzzer to
alarm the operator.
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MOTOR
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4. AUTOMATIC CONTROL OF INDUCTION
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5. Signal FlowSignal Flow
(1) Sensor:- CT, PT and temperature sensor will
monitor the input to the induction motor and
will transfer them to the microcontroller for
analysis.
(2) ADC:-It will make the analog signals from
sensors fit for the microcontroller as it can only
operate on digital signals.
(3) Micro-controller:-As per the input provided by the
sensing elements microcontroller will process
them accordingly to carry out intended
operations. AUTOMATIC CONTROL OF INDUCTION
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6. (4) MAX 232:- It is an interfacing element between
M/C and GSM modem as both works on a
different levels.
(5) GSM Module:-The GSM module will receive and send
messages and decode the commands which will be
stored in the Sim memory.
(6) LCD:-The display will show the status of the
motor parameters during faulty as well as
healthy conditions.
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7. Flow ChartFlow Chart
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8. COMPONENTSCOMPONENTS
USEDUSED
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9. GSM MODULE-SIM 300CGSM MODULE-SIM 300C
 This is a high performance GSM module which supports
900/1800/1900 MHz for voice and SMS communication.
 It can be interfaced easily using AT commands.
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10. • 8K x 14 words of FLASH program memory
• 368 x 8 bytes RAM
• 256 x 8 bytes of EEPROM
AUTOMATIC CONTROL OF INDUCTION
MOTOR
Advantages:-
The IC has enough of the required RAM and ROM
In-built ADC channel
Hence, there is no need to install extra chips which
saves money and it also makes the system compact.
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11. AUTOMATIC CONTROL OF INDUCTION
MOTOR
1.Potential Transformer
2.Relay
3.Current Transformer 4.LCD
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12. Proposed system circuit diagramProposed system circuit diagram
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MOTOR
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13. Circuit DescriptionCircuit Description
The whole assembly can be subdivided into
following parts:-
1.Power unit
2.Microcontroller
3.Sensor Input
4.Communication Circuit
5.Switching Circuit
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14. 1.Power unit
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Supply voltage

15. 2.Microcontroller
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16. AUTOMATIC CONTROL OF INDUCTION
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17. 3.Sensor Input
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PotentialPotential
TransformerTransformer
Basic amplifierBasic amplifier
Overvoltage comparatorOvervoltage comparator
Under-voltage comparatorUnder-voltage comparator
1.1. PT InterfacingPT Interfacing

18. Output during overvoltageOutput during overvoltage
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-5v-5v
5v5v

19. Output during under voltageOutput during under voltage
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+5v+5v
-5v-5v

20. AUTOMATIC CONTROL OF INDUCTION
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2.2. CT InterfacingCT Interfacing
Current TransformerCurrent Transformer Basic Amplifier Over current comparatorOver current comparator

21. During over currentDuring over current
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-5v-5v

22. 4.Communication Circuit
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23. 5.Switching Circuit
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24. Other features of the systemOther features of the system
Temperature sensor :-
LM-35
• Temperature range: -55 ⁰C to 150 ⁰C
• Accuracy: +1.5 ⁰C
• Output scale: 10mV/ ⁰C
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To microcontroller

25. RPM sensor :-
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Light Sensor
Schmitt Trigger
(HCF4093)

26. Waveforms of Schmitt trigger
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27. ADVANTAGESADVANTAGES
1. The system thus produced will be very low cost and
will require very less maintenance due to no moving
parts.
2. It will be very compact and easily transportable.
3. It will provide a two way control i.e. from remote
places as well as by on the site.
4. No highly skilled personnel is required.
5. The device thus developed will consume very less
power AUTOMATIC CONTROL OF INDUCTION
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28. Application of the projectApplication of the project
The System can be used to perform following
functions:-
1.It can be used to switch the motor ON and OFF.
2.The parameters of the motor can be known from any
distant place.
3.The system will provide protection against faults like
overvoltage, over current and overload.
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29. Future PlanFuture Plan
 hardware implementation
 Different software modules
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30. ReferencesReferences
ELECTRICAL MACHINES by B.L.THAREJA
THE 8051 MICROCONTROLLER AND EMBEDDED
SYSTEM by MUHAMMAD ALI MAZIDI
www.google.com
http://chipscity.com
www.atmel.com
www.wikipedia.com
http://microcontroller51.blogspot.in
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31. THANK YOUTHANK YOU
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