OLD PROJECT DATABASE

(ELECTRICAL) Semester 1 - 2015-2016

PROJECT TITLE Staircase light with auto switch off

SUPERVISOR Dr.Annamalai Muthu

LEVEL DIPLOMA

Objectives: In public places like restaurants, shopping malls, auditoria and hospitals, often one forgets to switch off the wash basin mirror lamp after use. This causes unwanted wastage of energy. This project aims to switch on a wash basin mirror lamp automatically whenever a person stands in front of it and switch off the same after a few seconds, thereby saving energy .The mirror lamp controller circuit consists of a transmitter section employing two timer ICs and an IR LED that transmit modulated 38KHz square wave pulses, which are reflected to the receiver sensor (using TSOP1738) by the person standing in front of the mirror. When the receiver sensor detects IR rays, it triggers a timer IC wired in Monostable mode with a time period of approximately 24 seconds. So it Energizes a relay, which switches on the washbasin lamp for that period. Thus the mirror lamp is switched on only when a person stands in front of it. Otherwise, it remains off.

PROJECT TITLE Power LED street Lighting using Solar Power

SUPERVISOR Dr. Subhra Debdas

LEVEL DIPLOMA

Objectives: A solar lamp is light fixture composed of an power of an power LED lamp, a photovoltaic solar panel, and a recharger battery .Outdoor lamps may have a lamp,solar panel and battery integrated in one unit,ln door solar lamps, also referred to as shaftlees skylights or tubeless skylights,have separately mounted solar panels and used for general illumination where centrally generated power is not conveniently or economically available. Solar lamps recharge during the day .Automatic outdoor lamps turn on at dusk and remain illuminated overnight, depending on how much sunlight they receive during the day. During recent years, An LED street light is an integrated light that uses light emitting diodes (LED) as its light source. These are considered integrated lights because, in most cases, the luminaire and the fixture are not separate parts (except LED Gine-based luminaires). New in manufacturing, the LED light cluster is sealed on a panel and then assembled to the LED panel with a heat sink to become an integrated lighting fixture. Different designs have been created that incorporate various types of LEDs into a light fixture. The current trend is to use high power 1 watt LEDs. However, some companies use low power LEDs in their products, including several low power LEDs packed together to perform the same purpose as a single high power LED. The shape of the LED street light depends on several factors, including LED configuration, the heat sink used with the LEDs and aesthetic design preference.

PROJECT TITLE Automatic Water Pump Controller

SUPERVISOR Mr.Prasad p Chandramohanan

LEVEL DIPLOMA

Objectives: Here’s a circuit that automatically controls the water pump motor. The motor gets automatically switched on when water in the overhead tank (OHT) falls below the lower limit. Similarly, it gets switched off when the tank is filled up. Built around only one NAND gate IC (CD4011), the circuit is simple, compact and economical. It works off a 12V DC power supply and consumes very little power. The circuit can be divided into two parts: controller circuit and indicator circuit.

PROJECT TITLE Arduino based forward and reverse speed control of DC motor

SUPERVISOR Dr. Subhra Debdas

LEVEL DIPLOMA

Objectives: During the past years, Arduino has become one of the most electrical open electronics appliances and other control devices. The Arduino Uno is a microcontroller board based on the ATmega328 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started. The Uno differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip. Instead, it features the Atmega16U2 (Atmega8U2 up to version R2) programmed as a USB-to-serial converter. In this project we will work for Arduino programming for programming where the motor will work in both directions (forward and reverse). In this project Arduino based open electronics software and driver has been used to control a DC motor with different time control randomly.

PROJECT TITLE Micro motor Controller

SUPERVISOR Mr. Srinivasan

LEVEL DIPLOMA

This project mainly aims to control DC motor (Forward & Reverse) using separate switches. Four LEDs are used to indicate the positions of start, stop, forward and reverse conditions. The circuit is built around two NE555 ICs (IC1 and IC2) and a quad- NAND IC CD4011 (comprising NAND gates N1 through N4). The NE555 ICs (IC1 and IC2) are configured as inverting buffers. IC CD4011 (IC3) NAND gates are configured as bi-stable flip-flop. The DC motor to be controlled is connected between the outputs (pin 3) of IC1 and IC2. This project finds a good application in many areas such as robotics, conveyors, etc.

PROJECT TITLE SCR Driven garden / Street Lamp switching

SUPERVISOR Mr.Abdul Nasar Mohammed

LEVEL DIPLOMA

The project deals with the LDR based SCR for switching the garden/street lamps ON and OFF

automatically. The design of the circuit uses simple automatic lamp connected to 220v AC power supply,

the LDR senses the light falling on it and switches ON when it is in darkness and when the LDR senses

light it switches OFF the lamp.

PROJECT TITLE DC Motor control Using a single Switch

SUPERVISOR Mr.Srinivasan

LEVEL DIPLOMA

This project mainly aims to control DC motor (Forward & Reverse) using a single switch. Three

LEDs are used to indicate the positions of stop, forward and reverse conditions. Initially the motor is in standstill position. When we press the switch for first time, the motor will run in forward direction. When we press the switch for second time, the motor will stop and for the third press, the motor starts to rotate in reverse direction. It is easier to construct this control circuit through which a motor can be made to run in both directions i.e. clockwise and anticlockwise. An interesting fact that adds to the curiosity of the circuit is that this control could be done by pressing a single switch. This project finds a good application in many areas such as robotics, conveyors, etc.

PROJECT TITLE Automatic Night lamp with Morning Alarm

SUPERVISOR Mr. Farooq

LEVEL DIPLOMA

Automatic Night Lamp with Morning Alarm System is a simple yet powerful concept, which uses transistor as a switch. By using this system manual works are 100% removed. It automatically switches ON lights when the sunlight goes below the visible region of our eyes. This is done by a sensor called Light Dependant Resistor (LDR) which senses the light actually like our eyes. It automatically switches OFF lights whenever the sunlight comes, visible to our eyes and activates the morning alarm. By using this system energy consumption is also reduced because nowadays the manually operated street lights are not switched off even the sunlight comes and also switched on earlier before sunset. In this project, no need of manual operation like ON time and OFF time setting.

PROJECT TITLE Car Parking guard circuit using infrared sensor

SUPERVISOR Mr. Muthukumar

LEVEL DIPLOMA

High way alert signal lamp is used in vehicles for safe highway driving. The lamp automatically emits the brilliant tricolor light when a vehicle approaches the rear side of the vehicle and alerts the approaching driver by the indication about the on-going vehicle in front also it provides additional safety during night time when we need to stop our vehicle on the side of the highway. This circuit saves considerable battery. 12v DC supply to the circuit can be provided by the car battery with proper polarity.

PROJECT TITLE Letterbox with letter-counting facility

SUPERVISOR Dr.Sugumaran Ganesan

LEVEL DIPLOMA

Present days we can says that it is time of e-mail and internet but still important documents in hard copy and letters are same importance in the daily life. Now everywhere system is in online forms and it is converting in online system but also in some workplaces like Government offices, Colleges and schools especially for grievances and suggestions still we cannot replace the paper work. These papers and documents are needs to post form one place to other place in office and for homes.

In this project the proposed circuit is used to count the number of letters inside letter box. It is

designed to save the time for going to the letterbox and check if there are letters inside. The number of letters present in the box is indicated by a seven-segment display.

PROJECT TITLE Electric Cradle

SUPERVISOR Mr.Gobinathan Subramanian

LEVEL DIPLOMA

There is a need to develop a new low cost indigenous electronic cradle because the existing cradles are

imported and costly. This paper presents the design and implementation of a new indigenous low cost

E-Baby Cradle that swings automatically when baby cries, for this it has a cry analyzing system which

detects the baby cry voice and accordingly the cradle swings till the baby stops crying. The speed of the

cradle can be controlled as per the user need. The system has inbuilt alarm that indicates two

conditions first when the mattress is wet, which is an important parameter to keep the baby in hygienic

condition, second when baby does not stop crying with in a stipulated time, which intimated that baby

needs attention. This system helps parents and nurses to take care of babies without physical attention.

PROJECT TITLE Hybrid Solar Charger

SUPERVISOR Mr.Gobinathan Subramanian

LEVEL DIPLOMA

Efficiency of a solar charging system depends on the weather conditions. Usually the solar panel gets four to

five hours of bright sunlight in a day. If the weather is cloudy or rainy, it affects the charging process and the

battery does not attain full charge. This simple hybrid solar charger can solve the problem as it can charge the

battery using both solar power as well as AC mains supply. When output from the solar panel is above 12 volts,

the battery charges using the solar power. When the output drops below 12 volts, the battery charges through

AC mains supply.

PROJECT TITLE Intruder detector using Laser Torch

SUPERVISOR Mr. Abdul Nasar Mohammed

LEVEL DIPLOMA

An “Intruder detector using laser torch” is a device or method used to prevent or detect an unauthorized

person trying to enter into your home without your permission. Intruder detector using laser torch is the

electronic device that continuously watches if anyone is entering your home.

This Intruder detector using laser torch is not only used in homes but we can even use it in garage door

openings , security applications .We can say that it is one of the reliable process and also we can save

power.

PROJECT TITLE Cell Phone Detector

SUPERVISOR Dr. Sivakumar Muthusamy

LEVEL DIPLOMA

This portable mobile transmission detector or sniffer can sense the presence of an activated

mobile cell phone from a distance of one and-a-half meters. So it can be used to prevent use of mobile phones in examination halls, confidential rooms, etc. It is also useful for detecting the use of mobile phone for Spying and unauthorized video transmission. The circuit can detect the incoming and outgoing calls, SMS and video transmission even if the mobile phone is kept in the silent mode. The moment the Bug detects RF transmission signal from an activated mobile phone, it starts sounding a beep alarm and the LED blinks. The alarm continues until the signal transmission ceases. Assemble the circuit on a

general purpose PCB as compact as possible and enclose in a small box like junk mobile case. As mentioned earlier, capacitor C3 should have a lead length of 18 mm with lead spacing of 8 mm. Carefully solder the capacitor in standing position with equal spacing of the leads. The response can be optimized by trimming the lead length of C3 for the desired frequency. You may use a short telescopic type antenna.

Use the miniature 12V battery of a remote control and a small buzzer to make the gadget pocket-size. The unit will give the warning indication if someone uses Mobile phone within a radius of 1.5 meters.

PROJECT TITLE PID Control of Buck-Boost converter

SUPERVISOR Mr. Murali

LEVEL Higher Diploma Project The buck converter is used in applications of fixed input to variable direct current output. The main

applications are switched mode power supplies in which the performance is better compared to linear

power supply. By state space averaging model the transfer function is obtained. Open loop response is

computed from the transfer function. The closed loop controller gains are designed using bode plots

method.

PROJECT TITLE Fesibility, Analysis and Simulation of Wind-Solar PV system for Masirah Island

SUPERVISOR Mr. Gujarati P K

LEVEL Higher Diploma Project Masirah or Mazeira Island :is an island off the East coast of Oman, 95 km long north-south, between 12 and 14 km wide, with an area of about 649 km², and a population estimated at 12,000 in 12 villages mainly in the north of the island

PROJECT TITLE Simulation of single phase full bridge switch mode rectifier (SMR)

SUPERVISOR Mr. Gujarati P K

LEVEL Higher Diploma Project Advances in power electronics and high-performance electrical technology are driving a move toward

switch-mode circuits for ac–dc conversion. Switch mode ac/dc converters have been shown to be superior

to thyristor phase controlled rectifiers in terms of power factor and input/output voltage and current

harmonics. It is necessary and essential to maintain the dc output voltage constant in many applications of

the rectifier. This project presents the operation & simulation of the single phase full bridge switch mode

rectifier. A Simple control strategy is used simulate the single phase full bridge switch mode rectifier. A

modified control strategy is presented to keep the output voltage constant and to ensure the improvement

in the current waveform of the source to make less harmonic at input side of the rectifier. The ripple free

dc output can be obtained by this strategy. Simulation is carried out in MATLAB-Simulink & results of

Single phase Full Bridge will be presented. The Experimental Power PCB has developed.

PROJECT TITLE Performance comparision of single phase and 3 phase controlled and uncontrolled rectifier using Matlab - Simulink

SUPERVISOR Dr. Vimalakeerthi

LEVEL Higher Diploma Project

This project presents simulations & performance result of single and 3-Ø rectifier circuits

(controlled and uncontrolled) using MATLAB-SIMULINK which is one of the most used power

electronics circuit. This project also describes method & concepts used to simulate power electronic

circuits using the SIMULINK toolbox within MATLAB software. The use of tool like

MATLAB-SIMULINK has always been a useful for researcher and the designer for analyzing and

designing different circuits. This project demonstrate the performance comparison of single and 3-Ø

rectifier circuits in term of its output voltage , current and possible maximum and minimum firing angle.

PROJECT TITLE Open loop and Closed loop Speed Control of 3 Phase Induction Motor using MATLAB

SUPERVISOR Mr. Srinivasan

LEVEL B. Tech Project I

Some industrial drive applications which use induction motors need constant speed operation throughout their speed range. The different methods of speed control of induction motors are stator voltage control, stator frequency control, v/f control, rotor resistance control and slip power recovery control. Among these methods v/f control is preferred. In this method by varying the frequency, the speed of the motor can be varied. Therefore, by varying the voltage and frequency by the same ratio, flux and hence, the torque can be kept constant throughout the speed range. In this project, mainly the drive circuits needed for the speed control of three phase squirrel cage induction motor is modelled. Single phase inverters without PWM technique, with PWM technique and three phase inverter circuits are simulated using MATLAB Simulink blocks and the results were presented.

PROJECT TITLE Study of pumped storage power generating station

SUPERVISOR Dr. Vimalakeerthi

LEVEL B. Tech Project I

Pumped Storage power plant is both an efficient and reliable form of clean source of renewable energy. It can be an excellent method of harnessing renewable energy from small rivers and streams. The pumped storage power plant is designed to be a run -of-river type, because it requires very little reservoir in order to power the turbine. The water will run straight through the turbine and back into the river or stream to use it for the other purposes.

There are two modes of operation in this power plant. Generation mode and motoring mode based on the load demand. The working medium is water and it is mainly dependent on the nature of the seasons and secondly it rarely meets peak load demands. After the erection of the power plant the energy production is not time dependent, it can produce power continuously. But the consumption is time dependent which is defined as peak hours and off-peak hours. There is excess load in time of off-peak hours and scarcity in peak hours. So this work can help to maximize the capacity of the water for production by using technological advancements to produce lot of energy in almost full capacity throughout the year to full fill the need of our country.

PROJECT TITLE Simulation and analysis of voltage transients and Harmonics for household Applications

SUPERVISOR Dr. Sivakumar Muthusamy

LEVEL B. Tech Project I

PROJECT TITLE LCL-T Resonant DC-DC Converter for stand alone Wind Energy System

SUPERVISOR Dr.Annamalai Muthu

LEVEL B. Tech Project I This project deals with simulation of DC-DC converter for stand-alone energy system. The LCL resonant inverter system and DC-DC converter system are simulated using MATLAB Simulink power system blocks. This converter has advantages like reduced transformer size, reduced filter size and current source characteristics .The simulation results are compared with the analytical results. The Simulink circuit model for closed loop system is developed.

PROJECT TITLE Solar Photovoltic Power System

SUPERVISOR Mr. Gobinathan Subramanian

LEVEL B. Tech Project I Solar panel has been used increasingly in recent years to convert solar energy to electrical energy. The solar panel can be used either as a stand-alone system or as a large solar system that is connected to the electricity grids. The earth receives 84 Terawatts of power and our world consumes about 12 Terawatts of power per day. We are trying to consume more energy from the sun using solar panel. In order to maximize the conversion from solar to electrical energy, the solar panels have to be positioned perpendicular to the sun. Thus the tracking of the sun’s location and positioning of the solar panel are important. The goal of this project is to design an automatic tracking system, which can locate position of the sun. The tracking system will move the solar panel so that it is positioned perpendicular to the sun for maximum energy conversion at all time.

PROJECT TITLE Electric Two Wheel Self Balancing Personal Transport

SUPERVISOR Dr. Subhra Debdas

LEVEL B. Tech Project I

The project “Four wheel intelegent green energy scooter” is a vehicle which has 4 coaxial wheels

driven independently by joystick controller that vehicle by the microcontroller commands for the driving of the motors. In this report, much coverage is given to the implementation of the microcontroller and the force sensing steering system.

Physical and mechanical improvements made to the vehicle are then discussed for improvements not only the functionality, but also the aesthetics of the Personal Transport. Overall, this project is easy and enjoyable to ride on and providing an enriching experience and a very good learning platform as a final year project.

OLD PROJECT DATABASE

(ELECTRICAL) Semester 2 - 2015-2016

PROJECT TITLE Fuse cum power failure indicator

SUPERVISOR Mr. Gobinathan Subramanian

LEVEL Diploma

Objectives: Fuse is a type of low resistance resistor that acts as a sacrificial device to provide overcurrent

protection, of either the load or source circuit. Its essential component is a metal wire or strip that

melts when too much current flows through it, interrupting the circuit that it connects. Short

circuits, overloading, mismatched loads, or device failure are the prime reasons for excessive

current. Fuses can be alternative to circuit breakers.

Fuse blowing is common problem, but is so tedious to go and check because every time it may not

blown. Here is a simple circuit of fuse and power failure indicator, for indicate the power failure by

giving alarm. The logic of this circuit is so simple and it also overcome the problem of checking

every time.

PROJECT TITLE Batteryless Flash Light for Desert / Remote Location usager

SUPERVISOR Mr. Muthukumar

LEVEL Diploma

Objectives: The battery less flashlight for desert/remote location design contains a linear electrical generator which

charges a battery like capacitor when the flashlight is shaken lengthwise. The capacitor powers a LED

lamp. The linear generator consists of a sliding rare earth magnet which moves back and forth through the

center of a solenoid (a coil of copper wire) when it is shaken. A current is induced in the loops of wire by

Faraday's law of induction each time the magnet slides through, which charges the capacitor through a

rectifier and some other circuitry. This is much suitable in an emergency situation.

PROJECT TITLE A Road Safety device for raods with sharp bend

SUPERVISOR Mr. Gobi Mohan

LEVEL Diploma

Objectives: One of the most important reasons that cause accidents, are the narrow streets, sharp edges and bends in hilly regions. This project may help save the lives of many people by reducing accidents resulting from the above reasons, which often cause dangerous accidents. We can use this device in a single-track roads and sharp turns and high altitudes. A device (IR transmitter and Receiver with timer circuit) to regulate traffic in roads with poor or no visibility of oncoming vehicles is fabricated and tested. The project involves a lamp that would glow, once a vehicle approaches a spot close enough to negotiate a bend or a hump, from where the oncoming vehicles may be hidden with road width not sufficient enough. This lamp, usually red, would stop the vehicles till the first come pass by, which may take about 10 seconds and this duration is adjustable.

PROJECT TITLE Electric Can Crusher

SUPERVISOR Mr. Murali

LEVEL Diploma

Objectives: This project deals with electric can crusher. The crushing cans can be a long and hard process when the

number of cans availability is more. The regular can crusher makes lot of time and user will get tired

easily. In this project uses the motorized can crusher which gets supply from battery. The switch is used

to control forward and reverse direction of motor. The mechanical components jack is utilized for

effective operation.

PROJECT TITLE Switching Single Phase Load Using Clock timer

SUPERVISOR Mr.Srinivasan

LEVEL Diploma

Objectives: This project mainly activates or deactivates an electronic device at the time of alarm preset in a clock automatically.

When the alarm rings, the tone burst generated at the terminals of the buzzer triggers the circuit and thereby

energizes or de-energizes to switch on or switch off the load. The main applications of this circuit are:

1. You want any electrical appliance or gadget to switch on automatically at a preset time.

2. You switch on any electrical appliance or gadget manually and want it to switch off automatically at a

preset time.

PROJECT TITLE Glass Break Alarm

SUPERVISOR Dr.Sugumaran Ganesan

LEVEL Diploma

Objectives:

In general, security alarm is a system designed to detect intrusion, unauthorized entry into a

building or area. Security alarms are used in residential, commercial, industrial, and military properties

for protection against burglary (theft) or property damage, as well as personal protection against intruder.

A glass break alarm system used in electronic burglar alarms that detects if a pane of glass is shattered or

broken. These sensors are commonly used near glass doors or glass store-front windows to detect if an

intruder broke the glass and entered.

In this project, the proposed circuit is used to alert the user if the glass is broken. It is designed to avoid

the breakage of glass in the commercial or residential area with the help of NE 555 timer, Piezo element

and buzzer. This circuit is very cost effective and also it is very simple.

PROJECT TITLE Solar PV based Automatic Domestic Outdoor Lighting

SUPERVISOR Dr. Subhra Debdas

LEVEL Diploma

Objectives: Following the trend for the utilization of alternative energy sources, solar energy has experienced explosive growth. Even so, at this point in time, from the point of view of economic efficiency, the production cost of solar energy is quite high. This is why solar power sources are often integrated with energy efficient LED lighting products. •Market forecasts predict that by the year 2010, LED lighting market will surpass 30 million and the predicted growth rate from 2006-2010 will reach 20%-30%.

PROJECT TITLE Ardunio based Digital Temperature Detector

SUPERVISOR Dr. Subhra Debdas

LEVEL Diploma

Objectives: Digital temperature controller is a system which will regulate temperature of certain area by turning on &

off heating and cooling devices according to external temperature. It can be connected to fan, heater,

AC and these devices will be turned on and off accordingly. The particular auto heating unit

discussed in this article is based on Arduino controller. A temperature sensor LM35 senses the

surrounding temperature and gives the reading to the controller. Based on the surrounding temperature,

controller decides which device is to be turned on. The device will maintain the temperature between

certain ranges. If the temperature reaches 20 °C, the heater is turned on. It remains ON until temperature

reaches 30 °C, at this point the fan is turned ON to keep the temperature within the range 20 °C to 30 °C

PROJECT TITLE Automatic Star Delta starter using relays and adjustable Electronics Timer for Induction Motor

SUPERVISOR Ms. Pandimadevi Ganesan

LEVEL Diploma

Objectives: An induction motor is the most modest electrical machine from constructional point of view, in the majority of the cases. Induction machines are by far the most common type of motor used in industrial, commercial or residential settings. Typical induction motors draw about 3 times the full load current while starting. The issue is, this current exceeds the continuous ratings of the wire in the windings, so if the motor takes more than a few seconds to get up to operating speed, the windings can be burned. So that to prevent this problem induction motor needed starter. Most induction motors are started directly on line, but when very large motors are started that way, they cause a disturbance of voltage on the supply lines due to large starting current surges. So the star/delta starters are probably the most common reduced voltage starters. This is starting method that reduces the starting current and starting torque. star delta starter received starting current is about 30% of the starting current during dol starter and starting torque

is reduced to about 25% of the torque available at dol starter. They are used in an attempt to reduce the start current applied to the motor during start as a means of reducing the disturbances and interference on the electrical supply.

PROJECT TITLE Investigation in Controller and Novel Switch Reluctance Motor (SRM)

SUPERVISOR Mr. Gujarati P K

LEVEL Diploma

Objectives:

In this Project Investigation has been done for novel SRM which has been constructed and demonstrated in last semester.A principles of switch reluctance is used. A rotor has been reconstructed.A control circuit is proposed along with power circuit.The power circuit is made by connecting IGBT as switch.The proposed SRM control circuit is done by microcontroller Arduino Uno, optoisolator 6N139 and transistor driver circuit.The results of control circuit are shown for demonstration.

PROJECT TITLE Vehicle Theft Alarm System

SUPERVISOR Dr. Radika Ponnuraj

LEVEL Diploma

Objectives: Safety, along with security, plays a vital role in today’s society. The main aim of this project is to prevent

vehicle theft through an alarm system. The car is a vehicle that is important, very useful. It must be good

protection. A car alarm is an electronic device installed in a vehicle in an attempt to discourage theft of

the vehicle. The alarm circuit taps power supply from the car battery. It generates a loud alarm when there

is an attempt of theft. The alarm sounds continuously for a few seconds even when the intruder switches

off the ignition key.

The system has a SCR-based trigger circuit and the alarm circuit uses the siren generator IC

UM3561.The circuit uses only a few components and can be easily assembled and installed on a car.

PROJECT TITLE LPG Leakage Detector

SUPERVISOR Mr. Sameeullah Hussain

LEVEL Diploma

Objectives:

Gas leakage is a major concern with residential, commercial and gas powered transportation

vehicles. The gas being heavier than air does not disperse easily and while in-haling it may lead to

suffocation and also gas leakage into air may lead to explosion. Due to explosion of LPG the number of

death has been increased in recent years.

To avoid this problem there is a need for a system to detect and also prevent leakage of LPG. So

this circuit is proposed to detect the leakage of LPG using gas sensor and alert the consumer about the gas

leakage by buzzer alarm

PROJECT TITLE Turbidity meter and water level Indicator

SUPERVISOR Sudheer Thelakkattu

LEVEL Diploma

Objectives: The main objective of the project is to monitor the presence of dirt in the main water tank and measure the level of water at one time. Sensitive device is placed in the tank and when it feel the presence of dirt its make a sound , and there are three measurements of water level , low and medium and high contacting to lamps worke according to the water level.

PROJECT TITLE Harmonic Analysis on single phase controlled rectifiers

SUPERVISOR Gobi Mohan

LEVEL Higher Diploma

Objectives: Harmonic pollution by power electronic converters is a concern especially when sensitive

equipment like bio medical instruments and other digital equipment depending for their operation

on clock circuit connected in parallel. Almost all electronic equipment and motor drives require a

power supply unit with most of them invariably use a down converter with a bridge rectifier with

or without a passive filter downstream. The project involves analysis of single phase converters

for the extent to which these circuits might cause pollution through injection of harmonic currents

by studying the source current.

Harmonic analysis is performed on controlled single phase half wave and full wave bridge rectifier

with and without filter. SIMULINK is used for simulation of the converters and the results

compared with analytical values and listed. It is found that the full wave bridge converter input

current is free of harmonics when the output is not filtered and filtering induces harmonics

excessively demanding input filter to isolate the other sensitive equipment.

PROJECT TITLE Study of Earth Mat Design for 400kV,220kV,132kV and 33kV Substations

SUPERVISOR Murali

LEVEL Higher Diploma

Objectives: This project deals with design of Earth Mat Design for 400 kV/220 kV/ 132 kV Grid substation. The

work is based on 400 kV GIS building like control cable termination from local control cubicle to

GIS bay, LCC cable termination and structure Earthing. The miscellaneous works are to be done

like fire alarm wiring and installation of lightning protection. In 220kV basement the installation of

cable support structure, cable termination at GIS end, and installation of link box with bonding

cable. In the outdoor area copper flat lay around the grid including chamber and earth rod fixing.

In 132 kV GIS building the comprehensive study of neutral earth resistor applied to all the devices

in the substation.

PROJECT TITLE A Comparative Analysis of converter Topology for Renewable Energy System (RES)

SUPERVISOR Prasad p p Chandramohanan

LEVEL Higher Diploma

Objectives: PV systems and wind generation are the most common renewable energy resource used now a days as an alternative to conventional fuels. Integration of renewable energy resource to Grid have many constraints. Converters have to be used to integrate the same effectively. Here we are discussing the Converter topologies used for connecting PV Systems to Grid. A comparative theoretical analysis of different types of power converter topologies used in connection with Renewable Energy Resources is studied in this project. The advantages and disadvantages are detailed.

Simulation study of Solar PV system and Wind generation system is also attempted and a basic idea of simulation studies using renewable energy resource and inverter is attained.

PROJECT TITLE Solar - Wind Hybrid System generation and Control using Power Electronics Devices

SUPERVISOR Farooq

LEVEL B.Tech - I

Objectives: Hybrid Energy System by combining solar photovoltaic and wind turbine as a small scale alternative sources

of electrical energy at where conventional generation is not practical. A simple PWM control technique has

been proposed for maximum power point tracking from the photovoltaic array and wind turbine under

varying climatic conditions without measuring the irradiance of the photovoltaic or the wind speed.

Description of the proposed hybrid system along with simulation results which ascertain its feasibility are

given to demonstrate the availability of the proposed system in this project.

In this project, a stand-alone solar wind hybrid system consisting of a photovoltaic (PV) array, battery bank,

wind turbine, and a three-phase permanent magnet synchronous generator (PMSG), two boost DC-DC

converters.

PROJECT TITLE Investigation in a Novel Two Leg Three Phase Converter

SUPERVISOR Gujarati P K

LEVEL B.Tech - I

Objectives: Advance in power electronic and high-performance electrical technology are driving a move toward circuit for ac-dc and dc-ac conversion. e.g. renewable energy, electrical vehicles. Normally a popular three phase inverter is of three leg which converts dc to ac. In this project a study of three phase three leg inverter is carried out and investigation has been done in two leg three phase inverter to get same performance and three phase output required. The simulation done will be base for experimental implementation in next semester.

PROJECT TITLE Modeling, Controlling and Simulation of DC Motor

SUPERVISOR Dr. Vimalakeerthi

LEVEL B.Tech - I

Objectives: The project is aimed to perform Modeling, Controlling and Simulation of Dc Motor. Mathematical modeling of DC motor is done using electrical and mechanical systems of Dc motor. Speed of DC motor is controlled by using armature and field control methods. In this project armature control of Dc motor is aimed to be conducted experimentally and its performance characteristics with respect to time and frequency are performed using MATLAB Simulink. With the advancement of power electronic circuits speed control of DC machines has become simple and precise nowadays. This project also aims to present the speed control methodology, by varying armature voltage using chopper by providing control signal to the switches. The advantage of such method is that the speed can be controlled from below and up to rated speed. The mathematical modeling, speed control of Dc motor and analysis of its results using matlab will be done in phase-1 of this project. Chopper control is aimed to be implemented in phase-2.

PROJECT TITLE Closed Loop Speed Control of 3 phase IM using MATLAB

SUPERVISOR Mr. Srinivasan

LEVEL B. Tech - II

Objectives:

Some industrial drive applications which use induction motors, need constant speed operation throughout their speed range. The different methods of speed control of induction motors are stator voltage control, stator frequency control, v/f control, rotor resistance control and slip power recovery control. Among these methods v/f control is preferred. Since in this method by varying the frequency, the speed of the motor can be varied. Therefore, by varying the voltage and frequency by the same ratio, flux and hence, the torque can be kept constant throughout the speed range. In this project, the speed of three phase squirrel cage induction motor is controlled by using open loop and closed loop V/F control method. The main part of the closed-loop controller is the PI controller. Based on the error in speed, the PI controller generates the corrected motor stator frequency and compensates the error and hence constant speed can be obtained. The simulation of the above process was performed using MATLAB/SIMULINK. The waveforms of speed, torque, current and voltage for three-phase squirrel cage induction motor were obtained.

PROJECT TITLE Study of Hydro Electric Power Generating Station

SUPERVISOR Dr. Vimalakeerthi

LEVEL B.Tech II

Objectives:

Hydro Electric Power Plant is clean source.

Designed of Micro Electric Hydro Power Plant.

Mechanical work of turbine.

Generator coupling

Matlab simulation.

Experimental result.

PROJECT TITLE Simulation and Analysis of Voltage Transients and Harmonics for household Applications

SUPERVISOR Dr. Sivakumar

LEVEL B.Tech II

Objectives:

PROJECT TITLE Comparison of LCL & CLL Resonant DC-DC Converter

SUPERVISOR Dr.Annamalai Muthu

LEVEL B.Tech II

Objectives: This project deals with comparison of open loop system CLL & LCL type of DC-to-DC converters for stand-alone wind energy system. The CLL resonant inverter system and DC to DC converter system are simulated using MATLAB Simulink power system blocks. These converters have advantages like reduced transformer size, reduced filter size and current source characteristics. The Simulink circuit models for both systems are developed and they are used for simulation studies.

PROJECT TITLE Four Wheel Intelligent Transporter

SUPERVISOR Dr. Subhra Debdas

LEVEL B.Tech II

Objectives: The project “four wheel intelligent transporter” is a vehicle which has 4 coaxial wheels driven independently

by joystick controller that vehicle by the microcontroller commands for the driving of the motors. In this

report, much coverage is given to the implementation of the microcontroller and the force sensing steering

system.

Physical and mechanical improvements made to the vehicle are then discussed for improvements not only the

functionality, but also the aesthetics of the Personal Transport. Overall, this project is easy and enjoyable to

ride on and providing an enriching experience and a very good learning platform as a final year project.

PROJECT TITLE Home Energy Management System

SUPERVISOR Dr. Sivakumar

LEVEL B.Tech II

Objectives: Now a day's every system is automated in order to face new challenges in the present day situation.

Automated systems have less manual operations, so that the flexibility, reliabilities are high and accurate.

Hence every field prefers automated control systems. Especially in the field of electronics automated systems

are doing better performance.

For utilization of appliances the new concept has been thought to manage them remotely by using

remot control. Just by press keypad of remote, you can perform ON / OFF operation of the appliances. There

are two resources, one is main power and another one is UPS (solar with Battery) .Whenever the main power

is off then automatically switches to UPS power.

PROJECT TITLE Home Energy Management Systems SUPERVISOR Dr. Sivakumar Muthusamy

LEVEL B. Tech Project I

Now a day's every system is automated in order to face new challenges in the present day situation. Automated systems have less manual operations, so that the flexibility, reliabilities are high and accurate. Hence every field prefers automated control systems. Especially in the field of electronics automated systems are doing better performance. For utilization of appliances the new concept has been thought to manage them remotely by using Android mobile. Just by press keypad of remote telephone, you can perform ON / OFF operation of the appliances. There are two resources, one is main power and another one is UPS (solar with Battery) .Whenever the main power is off then automatically switches to UPS power. The Status will be send to the mobile trough Bluetooth.

OLD PROJECT DATABASE

(ELECTRICAL) Semester 3 - 2015-2016

PROJECT TITLE Infrared Remote controlled Lamp

SUPERVISOR Mr. Sameeullah Hussain

LEVEL Diploma

Objectives:

Imagine the convenience of selecting TV channels using your remote and then pointing the same remote to your switchboard to switch on/off the fan or the tube light.

This is a simple circuit to remotely switch on/off any electrical device through a relay using the normal TV/ VCR/VCP/VCD remote control unit. The circuit can be activated from up to 10 meters.

This project essentially consists of a transmitter as a remote control unit, the receiver consisting of an IR module, CD4017 IC, LED’s to indicate the reception of the IR radiations, otherwise indicating the ON/OFF state, relay and other components.

PROJECT TITLE Automatic Vehicle Headlight Dipper / Dimmer

SUPERVISOR Pandimadevi Ganesan

LEVEL Diploma

Objectives: Headlights of vehicles pose a great danger during night driving. The drivers of most vehicles use high, bright beam

while driving at night. This causes a discomfort to the person travelling from the opposite direction. He experiences

a sudden glare for a short period of time. This is caused due to the high intense healight beam from the other vehicle

coming towards him from the opposite direction. We are expected to dim the headlight to avoid this glare. This glare

causes a temporary blindness to a person resulting in road accidents during the night. To avoid such incidents, we

have fabricated a prototype of automatic headlight dimmer. This automatically switches the high beam into low

beam thus reducing the glare effect by sensing the approaching vehicle. It also eliminates the requirement of manual

switching by the driver which is not done at all times.

PROJECT TITLE Control the centrifugal water pump & Electrical Devices by mobile phone from far away with timer

SUPERVISOR Mr. Velmurugan

LEVEL Diploma

Objectives: DTMF Decoder IC can control home appliances, robots, security equipment or anything else using mobile or

landline phone! Many applications for this amazing IC. Used in hobby electronics, electronic kits, robots,

home automation, DIY electronics, educational electronics and many other applications.

Our project is that using M-8870 DTMF decoder IC which decodes tone generated by the keypad of

cell phone to control Electrical devices. When you press any key on your mobile phone while call is in

progress, the other person will hear some tones corresponding to the keys pressed. These tones are based on

the DTMF (Dual Tone Multi Frequency) technology. Data is transmitted as pairs of tones. The receiver

.detects the valid frequency pair and gives the appropriate BCD code as the output

PROJECT TITLE Motion Detector using NE555 Timer

SUPERVISOR Mr. Prasad p p Chandramohanan

LEVEL Diploma

Objectives: Motion Detector Using NE555 Timer device is an important security device that can use this days. This

device will automatically switches on when someone comes close to it. It can use in many place for more

safety and more security. It can use in malls, banks, hospitals and other places. This device uses to

detection a theft by automatically the buzzer turn on when the theft come close to it.

PROJECT TITLE Water Conservation system using Electronics Control

SUPERVISOR Mr. Jason Vera Bolima

LEVEL Diploma

Objectives: The most common problem often encountered while dealing with vehicles is the overcrowding of parking places

which leads to the wastage of fuel and precious time of people. So , it is good to have a system to control and

manage this problem because of this, we need a proper parking system.

This project develops an automatic parking system, which can manage the number of cars inside a parking

area. It also has the provision to inform the person trying to enter the parking area, whether a space to park the

vehicle is available inside. It saves, money, time and space.

Our project is based on scanning the ID card, the IR sensor triggers the counter and it will indicate if there

is a free parking space. If a space is available, the entrance gate will open and the car can enter the parking area.

Also, green LED will turn on. Then the counter will add that car which will display the number in the screen. In the

same way the car can exit from exiting gate and the counter will subtract that car from the counter, and the counter

indicator. If there is no space red LED will turn on. In our project, we have used a PLC which is used to sense the

entry and exit of cars and depending upon the system flow of vehicles, PLC controls the opening and closing the

gates..

PROJECT TITLE Door Opening Alarm Using Hall Sensor

SUPERVISOR Dr.Sugumaran Ganesan

LEVEL Diploma

Objectives:

In general, security alarm is a system designed to detect intrusion, unauthorized entry into a

building or area. Security alarms are used in residential, commercial, industrial, and military properties for

protection against burglary (theft) or property damage, as well as personal protection against intruder.

Hall sensor based door opening alarm system used in electronic burglar alarms that detects the status of

the door position. When the door is closed, the magnet comes close to the sensor and the alarm is off.

But when door is opened, the alarm makes a sound is opened.

In this project, the proposed circuit is used to alert the user if the door is open. It is designed to

avoid the entry of unknown persons and also for energy consumption aspect in the commercial or

residential area with the help of hall sensor MH183 (IC1), pnp transistor BC557 (T1), npn transistor

BC547 (T2) element and buzzer. This circuit is very cost effective and also it is very simple.

PROJECT TITLE DC to AC Voltage Converter

SUPERVISOR Mr. Gobi Mohan

LEVEL Diploma

Objectives: Inverter circuits can either use thyristors as switching devices or transistors. When this device is powered using the 12V battery, the 555 timer connected in astable mode produces square wave signal of 50Hz frequency. This 12V AC signal across the primary of the transformer is then stepped up to 120V AC signal across the transformer secondary.

PROJECT TITLE Cash Box Security Alarm

SUPERVISOR Mr. Gobi Mohan

LEVEL Diploma

Objectives: Most thefts happen after midnight when people enter the second phase of sleep called 'paradoxical sleep.' Here is a

smart security circuit for your cash box that prevents the theft attempt by activating an emergency beeper. The

circuit can also be used to trigger any external burglar alarm unit.

A step down transformer is used to convert 230v ac to 12v ac. The bridge circuit is used to convert ac to dc. The

filter is used to remove the ripples from the supply. The regulator is used to maintain the supply constant.

Here we are using an LDR circuit and buzzer for this circuit. When the cash box is in safe condition that means

when the LDR detects the darkness it make the transistor off. So the buzzer will be off.

When the cash box is opened by an unauthorized person that means the LDR is on, this makes the transistor on. This

makes the relay on. So the buzzer makes the sound.

Finally when the cash opened by an unauthorized person the buzzer makes the sound.

PROJECT TITLE Bi direction DC Motor Control Circuit

SUPERVISOR Radika Ponnuraj

LEVEL Diploma

Objectives: This project is designed to control the speed and direction of a DC motor using NE555 Timer IC. Nowadays, there

are lots of motor speed control circuits available on the market. However, their costs are relatively high. A speed

control with both low cost and good performance will be highly marketable, especially for robotics system.

Voltage can be applied in either direction to rotate the DC motor forward or backward. DC motor further move the

robot or any robotic system, forward or backward.

The main feature of this circuit is very simple and it uses only few components. Two numbers of 555 ICs and a variable resistor is used. The motor is controlled by adjusting the variable resistor. LEDs are used to indicate the motor direction

PROJECT TITLE Car Security alarm system

SUPERVISOR Radika Ponnuraj

LEVEL Diploma

Objectives: In Oman the most commonly used vehicle for transport is cars. With an increase in the number of car intruders in

the recent days, a car alarm system has become an important component to be included while purchasing a car. Such

a security will enable to prevent theft of things in the car or the car itself. Thus the aim of the project is to design a

simple car security alarm system. This alarm is useful in each car to avoid the car from stealing.

A transistor with SCR based alarm circuit is designed. When the intruder opens the door, the circuit senses

the attempt of theft and the alarm will be activated. It generates a loud alarm with light display.

PROJECT TITLE Fire Alarm circuit using Germanium diode

SUPERVISOR Mr. Sameeullah

LEVEL Diploma

Objectives:

A fire alarm is a device that detects the presence of fire and atmospheric changes relating to

smoke. In some cases, a firm alarm is a part of a complete security system, in addition to a

burglary protection system. The fire alarm operates to alert people to evacuate a location in

which a fire or smoke accumulation is present.

When functioning properly, a fire alarm will sound to notify people of an immediate fire

emergency. Fire alarms can be found in homes, schools, churches and businesses, and

function as the catalyst to saving lives. For most fire alarms, when sounded, a beep, bell or horn

noise is made. This distinct sound exists to allow the notification to be heard. The fire alarm

constructed by this project work is reliable at low cost.

PROJECT TITLE Performance Analysis for 3 Leg And 4 Leg single Phase online UPS

SUPERVISOR Mr. Muthukumar

LEVEL Higher Diploma

Objectives: This project analysis the performance of 4 leg and 3 leg online UPS on the basis of its efficiency and THD (Total

Harmonic Distortion). In 4 leg UPS circuit, the first 2 leg is used for rectifier circuit and last 2 leg is used for

inverter circuit. Capacitor will do the DC link role. Whereas the 3 leg UPS integrate with the converter which

operate with battery charger and the inverter. The first leg controls the ability of charging battery. The third leg

controls the output voltage. The common leg is used to control the line frequency. The inverter is used to maintain

the output voltage and to limit the output current. The main feature of the three leg converter is used to reduce the

number of switching devices and there by reduces the cost of the circuit and also the switching losses.

PROJECT TITLE PLC Controlled Electro Pneumatic Demo Unit

SUPERVISOR Mr. Freddie Byron

LEVEL Higher Diploma

Objectives:

This project presents study of electro-pneumatic system and its operation using PLC (Programmable Logic Controller). The overall process uses air pressure and solenoid valves to be controlled by PLC. The electro-pneumatic trainer comprises of 1-single acting cylinder, 2-double acting cylinders and several solenoid valves. These will be controlled by PLC to present several sequences to demonstrate the operation of pneumatic cylinder according to given event diagrams.

PROJECT TITLE Automatic Soalr Panel Cleaner

SUPERVISOR Mr. Sudheer

LEVEL Higher Diploma

Objectives:

Solar panels work by allowing light into the solar cells. The more light that hits a panel, the more power it

will generate. Due to the upwards angle of solar panels, they are more prone to bird droppings and a build-up of

general dust and dirt that does not wash off with just rain. This reduces the amount of light hitting the panel and

reduces its output. As the projected energy figures claimed by solar panel manufacturers and installers are based on

the optimum performance of clean solar panels, this build-up of dirt can adversely affect the panel’s ability to meet

those projections. So it is important to clean solar panels in order to protect and maintain your investment.

PROJECT TITLE Design & Implementation of Boost & Buck Boost DC-DC Converter using MATLAB Simulink for Solar power Battery Charging Applications

SUPERVISOR Dr. Sivakumar

LEVEL Higher Diploma

Objectives: In recent times, solar energy is becoming the most popular non-conventional energy sources. Standalone Photovoltaic (PV) system is the very popular way of to converting the solar energy into electrical energy. The PV solar generation is preferred over the other renewable energy sources because of its advantages such as the absence of fuel cost, cleanness, being pollution free, little maintenance and causing no noise due to absence of moving parts. However, a standalone photovoltaic system cannot be directly connected with fluctuating loads. Since the power output of solar system itself is fluctuating and depends on the solar irradiation and temperature, it is not safe to directly feed the load using the solar panels. Hence a solar PV system requires a proper battery, so that it is possible to store the electrical energy in the battery and supply to the load. In such a scenario, a battery charge controller is needed to prevent overcharging and undercharging of the batteries. Proper charging will prevent damage and increase the life and performance of the batteries. The purpose of the battery charge controller is to charge the battery using the electrical energy coming from the solar panel. A battery charge controller is simply a DC-DC converter, which has to act according to the input voltage available from the solar panel. This DC-DC converter may be a boost converter or a buck-boost converter. Boost converter normally steps up the DC voltage, whereas buck-boost converter steps up/down depending upon the input and output voltage requirements. In the first phase of the project work, buck converter was designed for a solar panel-battery charging system. In this phase, both boost converter and buck-boost converter will be designed theoretically and simulation will be carried out using MATLAB software for validation of design. Then the influence of duty ratio on the load voltage and load current will be studied using the Matlab Simulink software for both boost converter and buck-boost converter topology.

PROJECT TITLE Modelling, simulation and performance analysis of FACTS controller in transmission line

SUPERVISOR Dr. Vimalakeerthi

LEVEL B.Tech - I

Objectives:

For the development and improvement of dynamic performance of the modern power system, Flexible AC Transmission Systems (FACTS) devices have been used since 1970s. FACTS devices use power electronic components to improve system performance. FACTS controller includes Fixed Capacitor Thyristor Controlled Reactor (FC_TCR), Static Synchronous Compensator (STATCOM), Thyristor Controlled Series Compensator (TCSC), Static Series Synchronous Compensator (SSSC), Static VAR Compensator (SVC), Unified Power Flow Controller (UPFC), which are used in the transmission and distribution system to improve power transfer capability and to enhance power system stability. The Unified Power Flow Controller (UPFC) is the most complex power electronic equipment and is able to control, simultaneously or selectively, all the parameters affecting power flow in the transmission line. It can independently control both the real and reactive power flow in the line. This paper shows the results that show the performance of the system for each of the FACTS devices in improving the power flow in the transmission line. All the simulations are carried out by using MATLAB/SIMULINK software. The simulation result shows the performance of FACTS devices in transmission line.

PROJECT TITLE Design Passive Filter for Fully controlled Rectifier

SUPERVISOR Murali

LEVEL B.Tech - I

Objectives:

The increasing growth in the use of electronic equipment in recent years has resulted in a greater need to ensure that

the line current harmonic content of any equipment connected to the AC mains is limited to meet regulatory

standards. This requirement is usually satisfied by incorporating some form of Power Factor Correction (PFC)

circuits to shape the input phase currents, so that they are sinusoidal in nature and are in phase with the input phase

voltages. There are multiple solutions in which line current is sinusoidal. This project provides detailed analysis of

utilizing different configurations of passive filters for reduction in total harmonic distortion in input side and

enhance the power factor for single phase low power applications.

PROJECT TITLE Analysis & Simulation of DC-DC Converter Fed Motor By using Matlab

SUPERVISOR Dr.Sugumaran

LEVEL B.Tech - I

Objectives:

PWM controlled rectifiers can efficiently and economically be employed in low and medium power applications of

dc drives in rectifier–inverter systems while maintaining the advantages of design simplicity and operation

reliability. This project deals with the characteristics of the separately excited dc motor with Buck, Boost and

buck-boost converters and obtains the speed, torque, armature voltage and current using MATLAB simulation. By

adding controller in the open circuit and compare the peak overshoot and settling time with closed loop circuit by

simulation results.

PROJECT TITLE Solar -Wind Hybrid system generation and control using power Electronics Devies

SUPERVISOR Mr. Farooq

LEVEL B.Tech - II

Objectives:

Renewable sources solar and wind energy are the world’s fastest growing energy resources. With no emission of pollutants, energy conversion is done through wind and PV cells. So these energy sources can be used to bridge the gap between supply and demand during peak loads. In this study, we proposed a hybrid energy system which combines both solar panel and wind turbine generator as an alternative for conventional source of electrical energy like thermal and hydro power generation. In this project, a wind-photovoltaic hybrid power generation system model is studied and simulated. A software simulation model is developed in Matlab/Simulink

PROJECT TITLE Investigation in Novel two leg thre phase converter

SUPERVISOR Mr. Gujarati P K

LEVEL B.Tech - II

Objectives: Advances in power electronics and high-performance electrical technology are driving a move toward circuits for ac–dc and dc-ac conversion. A number of applications of converters are increasing, e.g. renewable energy,

electrical vehicles etc. Normally a popular three phase inverter is of three leg which converts dc to ac. In last semester investigations has carried out on two leg three phase inverter and Simulation has carried in Matlab-SIMULINK which confirms effectiveness of proposed converter.

In this semester experimental implementation of two leg three phase converter has been carried out for Generation of switching signal and design and implementation of control circuit. Control circuit is proposed with Microcontroller UNO used for generating switching signals which are given to transistor driver circuit made of BC 547 and BC 557 through optoisolator or 6N139 which isolates control signals from microcontroller and given to drive IGBT switch. A PCB is designed for 8 control circuits and Power Circuit and implemented for all control circuits. A results shown can be used to convert DC to three phase AC using two leg.

PROJECT TITLE Analysis of Speed DC Motor by controlled rectifiers using Matlab Simulink

SUPERVISOR Dr. Vimalakeerthi

LEVEL B.Tech - II

Objectives:

The project is aimed to perform Speed control of dc motor using controlled rectifier. DC Motor speed control is

carried out by use of controlled rectifier. Simulation is done for armature control and field control using half

controlled and full controlled rectifiers.The above mentioned experiment was again carried out using thyristors. DC

motors are used extensively in adjustable-speed drives and position control applications. Their speeds below the

base speed can be controlled by armature-voltage control. Speeds above the base speed are obtained by field-flux

control. As speed control method for DC motors are simpler and less expensive than those for the AC motors, DC

motors are preferred where wide speed range control is required. Controlled rectifiers also provide variable dc

output voltage from a fixed dc input voltage. Simulation results obtained shows that controlled rectifiers offer better

speed control compared to conventional resistance changing method. Matlab is used as the simulation tool.

PROJECT TITLE Solar photovoltic power system

SUPERVISOR Mr. Gobinathan

LEVEL B.Tech - II

Objectives: Solar panel has been used increasingly in recent years to convert solar energy to electrical energy. The solar panel can be used either as a stand-alone system or as a large solar system that is connected to the electricity grids. The earth receives 84 Terawatts of power and our world consumes about 12 Terawatts of power per day. We are trying

to consume more energy from the sun using solar panel. In order to maximize the conversion from solar to electrical energy, the solar panels have to be positioned perpendicular to the sun. Thus the tracking of the sun’s location and positioning of the solar panel are important. The goal of this project is to design an automatic tracking system, which can locate position of the sun. The tracking system will move the solar panel so that it is positioned perpendicular to the sun for maximum energy conversion at all time.