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2012-2013

ELECTRICAL ENGINEERING

GOVERNMENT ENGINEERING COLLEGE ,AJMER

ABHISHEK MATHUR

VIII thsemesterElectrical Branch

Dr. Lata GidwaniAssistant professor

Guided By :- Presented By:-

PROTECTION OF INDUCTION

MOTOR USING PLC

A SEMINAR PRESENTATION ON

Seminar Coordinator

Mr. K.G SharmaAssociate professor


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ABSTRACT In most modern industries there is a growing need for high

efficiency and availability in motor driver systems.

Moreover, motor operation monitoring is necessary for theimplementation of proper and cost effective motormaintenance.

In this research, a PLC-based protection method for three-phase induction motors is used .

The PLC automated process costs less, provides higheraccuracy.

The PLC correlates and controls the operationalparameters to the set point requested by the user andmonitor the motor.


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INDUCTIONMOTOR PROTECTION


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INTRODUCTION

o Main aim of this research based project is todesign a motor driver system with the helpof PLC to control induction motor andprotect induction motor from possible faults .

o All operational data is provided by a devicethat is able to read line currents, line-to-linevoltages, unbalanced current, unbalancevoltage and temperature.

o This systems are equipped with special I/Ounits appropriate for direct usage inindustrial automation systems


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EXISTING SYSTEM

Fault Detection and Protection of Induction motorusing PIC Controller in Sept 2006 .

The application of wireless sensor networks for

condition monitoring in three-phase induction

motors in 2007.

A Connectivity Improving Mechanism for ZigBeeWireless Sensor Networks.


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FAULTS

OVERLOAD

UNDER VOLTAGE

OVER VOLTAGE

SINGLE

PHASING

EARTH FAULTS

PHASE

REVERSAL


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PROTECTION SYSTEM HARDWARES

PROGRAMMABLE LOGIC CONTROLLER

POWER SUPPLY

RMS TO DC CONVERSION AD536 A

RS-232 CABLE

CURRENT/VOLTAGE TRANSFORMERS

COMPUTER SYSTEM


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A PLC is a small computer usedfor automation of real worldprocesses, such as control of

machinery on factory assemblylines.

It was originally developed toreplace mechanical relay,

timers, counters.

Its purpose to monitor crucialparameters & adjust processoperation accordingly.


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APPLICATIONS OF PLC


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Sensors - converts a physical

condition into an electricalsignal.

Discrete Input/output- referred toas a digital input/output, is aninput/output that is either in anON or OFF condition.

Analog Input/output:-Ananalog

input/output is a continuous,variable signal.

CPU :- is a microprocessor systemthat contains the system memory

& decision making unit.


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PLC PROGRAMMING

Statement list Function block

Ladder diagram

The ladder diagram is the mostpopular programming language


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POWER SUPPLY

A Constant PowerSupply of 5V isrequired in theproposed system usingrectifiers , filters andvoltage regulator.


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AD536A is a complete monolithic integratedcircuit that performs true rms to dc conversion


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RS-232 CABLE

it is a serial communication physical interfacethrough which information transfers in or outone bit at a time.

it provides the connectionbetween PLC andcomputer system.


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A current transformer is a type of "instrument transformer" that isdesigned to provide a current in its secondary which is accuratelyproportional to the current flowing in its primary.

Voltage transformers (VT) or potential transformers (PT) are anothertype of instrument transformer, used for metering and protection

in high-voltage circuits.


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SOFTWARE INTERFACING


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SCADA MONITORING

SCADA stands for SUPERVISORY CONTROL

AND DATA ACQUISITION

its systems are used to monitor and control aplant or equipment in industries graphicallyalong with the control hardware .


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APPLICATION OF SYSTEM

Textile Industries

Industrial Pumps & Fans

ElevatorsCement mills

Rubber millsCranes


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This paper presents a part of an ongoing work.

In all growing industries ,there is need of motor

driver systems to control and monitor of

induction motor from one central point usingPLC .

This motor driver system will identified the faultand protect the motor within a second


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CONCLUSION

In this study, a novel digital protection system forthree phase Induction motor designed andimplemented successfully.

If any fault is observed during online operation of themotor, a warning message appears on computer andthen the motor is stopped.

it provides a visual environment, which makes thesystem more user friendly than other protection

system.


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M. Peltola, Slip of ac induction motors and how to minimize it ABB Drives PressReleases Technical Paper, ABB, New Berlin, 2003, pp. 17.

I. Colak, H.Celik, I.Sefa On line protection system for induction motorsEnergyConvers. Manage.vol. 46, no. 17, pp. 27732786, 2005.

A. Siddique, G.S.Yadava, and B.Singh, A review of stator fault monitoringtechniques of induction motorsIEEE Trans. Energy Convers.vol. 20, no. 1, pp.106114, Mar. 2005.

Y. Zhongming and W. Bin, A review on induction motor online fault diagnosisin3rd Int. Power Electron. Motion Control Conf.(PIEMC 2000),vol. 3, pp. 13531358.

M. E. H. Benbouzid, Bibliography on induction motors faults detection anddiagnosisIEEE Trans. Energy Convers.vol. 14, no. 4, pp. 10651074, Dec. 1999.

M.G. Ioannides, Design and implementation of PLC-based monitoring controlsystem for induction motor,IEEE Trans. Energy Convers.vol. 19, no. 3, pp. 469476,Sep. 2004.


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QUERIES ????

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