Project title: Automatic Switching of Power suppy

Electrical Section Engineering Department

Nizwa College of Technology Ministry of Manpower

Project title: Automatic Switching of Power suppy.

Project Supervisor: Dr. D.VIMALAKEERTHY Semester: I ACADEMIC YEAR: 2017-2018 LEVEL Diploma

Project done by students which is given below:

No. Student ID Name of the Student Section

1 22S14192 HANI KHALIFA MOHAMMED AL-RIYAMI EE Section

2 22J14302 Mohammed Said Hamed Al-Siyabi EE Section

3 22S13493 Muhanad Mohammmed Nasser Al Hinai

EE Section

4 22S14172 SAID KHALFAN SAID AL UBAIDANI EE Section

5 32S142 SALIM MOHAMMED ABDULLA AL SUQRI

EE Section

6 22S1437 TALIB ABDULLAH ISSA AL BALUSHI

EE Section

Description about the project:

Most of embedded electronic based systems need a regulated supply of power. This type of

power supply is needed to provide a regulated and variable power supply system that

automatically stops supply in case no load is detected. The output voltage of this project

varies between 3.75 to 8.7 volts using a voltage regulator arrangement. Automatic switching

off is enabled using a relays and transistor embedded mechanism. This mechanism

auto switches off the input power supply in case of no load condition. Proteus software is

used for preparing the PCB board.

Circuit diagram



Project title: Solar Tracking Dc Motor LDR

Project Supervisor: MOHAMMAD FAROOQ KHAN Semester: I Academic year:2017-2018

Level DIPLOMA

Project done by students which is given below: S No Student ID Name of the Student Section

1 22S1416 HISHAM SULAIMAN MOHAMMED AL BUSAIDI

POWER

2 22S14282 NAWAF MOHAMED KHAMIS AL MUFARJI

POWER

3 22J14312 Aymen Ghareeb Rabia Al Siyabi POWER

4 22S168532 Ayoub Mohammed Marhoon Al Amri POWER

5 22S14245 AMJAD ALI MOHAMMED AL-SULEIMANI

POWER

6 22J144363 Ahmed Saleem Khalifa Al Junaibi POWER

ABSTRACT:

We all know that a Solar Panel can be used to convert light energy to electrical

energy. The amount of converted energy depends on the amount of light falling on

the Panel. Generally Solar Panels are stationary devices which is fixed at a position.

The produced electrical energy can be increased if we move the solar panel as the

movement of the Sun. Here is a simple low cost Solar Tracker circuit which

automatically moves the solar panel in the direction of Sun. The movement of the

Sun is detected using two LDRs which are arranged on the Solar Panel in such a way

that the intensity of light falling on it varies as the direction of Sun changes.

Circuit Diagram



Project title: Automatic Anchor Light Project Supervisor: S.Gobimohan Semester: I Academic year:2017-2018

Level Diploma

Project done by students which is given below: S No Student ID Name of the Student Section(4)

1 22J1527 FADUA SALEEM 'ABDALLAH AL TUBI Electrical Power

2 22S14225 RAHAB ALI KHALIFA AL HINAI Electrical Power

3 22J1596 SAFA KHALFAN MUSABAH AL-MANDHARI

Electrical Power

4 22J15399 Suha Said Hamed Al-Sulimani Electrical Power

5 22J15415 Suha Salim Saif Al-Saqri Electrical Power

ABSTRACT:

Federal and international regulations require boats to carry lights between sunset and sunrise and during conditions of restricted visibility. The number and colours of the lights vary with the size of the vessel. Many commercial vessels carry special lights that identify them to the others. This is important because right of way depends on the types of vessels involved. Tugs and commercial fishing vessels have the right of way over sailboats, which have the right of way over ordinary power vessels.

Circuit Diagram



Project title: Water Leakage Detection Sensor

Project Supervisor: Dr.N.Loganathan Semester: I Academic year:2017-2018

Level Diploma


1 22s13237 Ali Saif AL-Zyadi

2

2 22j13210 Ibrahim Said AL-Hashmi 2

3 72s14245 Mohammed Abdullah AL-Hainai 2

4 22s13302 Saif Rashed AL-Hadrhami

2

5 22s14228 Abdul Rahaman AL-Abri 2

6 22j1578 AL-julandi Zahir Ambu-saidi 2

ABSTRACT:

Water is the main requirement of our human life. The wastage of water will cause the water

demand in our future life. So, we should save the water wherever the water wastage takes place due to

leakage in the water point. The proposed project work is focused to detect the water leakage in the

water points with the help of simple Electronic circuits by using water sensor.

A water leakage detector is an electronic circuits that is designed to detect the presence of

water and provide an alert in time to allow the prevention of water leakage. A common design is a small

device that lies flat on a floor and relies on the electrical conductivity of water to decrease the

resistance across two contacts. The device then sounds an audible alarm together with providing

onward signalling in the presence of enough water to bridge the contacts. These are useful in a normally

occupied area near any infrastructure that has the potential to leak water, such as water cooling pipe

line in generating stations, dames and water tanks in the houses.

The circuit is basically a switching type circuit made with the help of a popular dual op-amp IC

LM358N which is configured here as a comparator. Under normal conditions, resistance of the water

sensor is low and thus the voltage at its non-inverting terminal is low compared to that at its inverting

input terminal. The corresponding output of the comparator is accordingly low and thus nothing

happens in the circuit

When water leakage takes place, the sensor resistance increases rapidly. As a result, the non-

inverting pin becomes more positive than the inverting pin. This pushes up the output ofIC1 to a high

level. As a consequence, the LED inside the opto-coupler is energised. At the same time, LED1 provides

a visual indication. The opto-coupler can be suitably interfaced to relay control circuit. A simple and cost

effective circuit for detecting the water leakage is designed in this proposed project.

Circuit Diagram

Electrical & Electronics Section Engineering Department


Project title: Water Pump Dry Run Guard

Level Diploma Semester: I Project Supervisor: Dr. Annamalai Muthu


Description about the Project: The aim of our project is the water pump dry run guard that works as an effective solution

for protection of household submersible water pumps against dry running. Minimum water-

level monitoring feature in the circuit is realized using suspended sensor probes to ensure that

the water pumps will not run under a dry condition.

Besides, switch-on and return-delay features prevent the pumps from unwanted brief operation

when handling turbulent underground water.

Batch No 13 Lecturer Dr. Annamalai Muthu

S.No Studuent ID Student Name

1 22J15110 IBRAHIM SULAIMAN HAMOOD AL-GHAWI

2 22S147 Mohammed Saif Muhanna Al Abdali

3 21S15218 Aflah Khamis Said Al Shukaili

4 22S1412 Mandhr Said Salim Al-Julandani

5 22J13193 Malik Darwish Sloum Alkhamisi

6 22S14276 SAMIR HILAL SALIM AL-RAHBI



Project title: Washing Machine Motor Controller

Project Supervisor:

Mr.Muthukumar Selvakkannu

Semester: I Academic year:2017-2018

Level

Diploma


1 22J14245 Al MuntaserNasserSaidAl Rashdi

E & E Section

2 22J14118 AsadSaidMohammedAl-Wardi

E & E Section

3 22J13129 IsmailYahyaKhalfanAlsiyabi

E & E Section

4 22S1457 MOHAMMEDSALIMABDULLAAL-RASHDI

E & E Section

5 22S13369 ShehabHamedHamedAl Aamri

E & E Section

6 22S14260 YOUNISQAISARMANSOORAL-RIYAMI

E & E Section

ABSTRACT:

The washing machine is widely used in the present day’s society for washing and drying of

clothes. The semi-automatic washing machine right now a mechanical switch for the clockwise and

anticlockwise direction rotation. In due course of the usage these mechanical switch may get wear and

tear and damage. In order to avoid this sort of problem, this project uses an electrical relay which

controls the forward and reverse operation of the washing machine motor controlled by suitable control

circuit with the help of the electronic IC’s like IC 555, CD4011, CD4027 & transistors.

Circuit Diagram



Project title: Cistern Overflow Alert System

Project Supervisor: Dr.P.Radika Semester: I Academic year:2017-2018

Level Diploma


1 22J15216 Qoot Alquloob Saif Hamid Al Shamsi

EE 2 24J1529 Zainab Said Khalfan Al Naabi 3

26J1564 Al-Ghaliya Nasser Said Al-Hinaai

4 22J15374

Umayma Ali Hamood Al Rawahi

5 22J15101

Kathya Saif Shaikhan Al Abri

ABSTRACT:

Cistern (tank that holds water to flush the toilet) overflow is a common problem which leads to

the wastage of water. In case the cistern’s mechanism falters and water starts overflowing. Also

water tank overflow which leads to the wastage of water. Though there are many solutions to

control it like ball valves which automatically stop the water flow once the tank gets full. Here

the presented circuit is a simple electronic circuit that will sound an alarm with visual warning

indications under water overflow condition. This alert system can be used in the water tank to

indicate the water level also. The system uses a single IC CD4066 with LED indications and a

transistor circuit to operate the buzzer. The different water level of the tank can also be monitored

by using this circuit.

Circuit Diagram



Project title: Automatic USB controlled Power Switch

Project Supervisor: Mr. M. Srinivasan


Level Diploma


1 22S14141 Al Waleed Nasser Said Al Subhi EE

2 22S1473 Al-Hasan Ali Hamyar Al Rashdi EE

3 22S13392 Abdulrahman Musabah Hamed Al Dihani EE

4 22S14220 Mohammed Hamed Khalfan Al Mahruqi EE

5 22S143 Mohammed Muslem Salim Al-Toubi EE

6 22S14120 Salim Saif Nabhan Al-Rawahi EE

ABSTRACT:

The main concept is to provide a circuit which uses the USB port of electronic devices

as an automatic switch to control the input supply to that device. Energy wastage is one of the

most severe problem faced now-a-days. The wastage of energy from home appliances or

electronic devices takes a major role in this problem. All electronic devices come with one or

more USB port. The circuit uses these USB port to control the input supply. When TV or any

other electronic devices is switched off using remote, its SMPS will consume a small amount of

power which leads to the wastage of energy. This circuit gives a solution for such problem. Thus,

as soon as the device get switched off using remote, the entire supply to the device get turned off

and saves energy. The device can again be switched on by pressing the push button in the circuit.

This circuit also protects the electronic devices from any harmful initial surges.

Circuit diagram of Automatic USB - Controlled Power switch



Project title: Techometer using arduino nano

Project Supervisor: Dr. Subhra Debdas Semester: I Academic year:2017-2018

Level Diploma


1 22S14115 AYMAN MOHAMMED NASSER AL-AZWANI

10

2 22S13270 Abdallah Rashid Muslem Al-Aamri

10

3 22S14175 HUSAM SULAIMAN KHALFAN AL-HARRASI

10

4 22S14114 MOHAMMED SARHAN SALIM AL RIYAMI

10

5 22J15123 NASSER SAID MUHANNA AL RIYAMI

10

ABSTRACT:

In this project an Arduino based tachometer has been proposed. Tachometer is a RPM

counter which counts the no. of rotation per minute. There are two types of tachometer one

mechanical and other one is digital. Here we are going to design an Arduino based digital

tachometer using IR sensor module to detect object for count rotation of any rotating body. As

IR transmits IR rays which reflect back to IR receiver and then IR Module generates an output

or pulse which is detected by the Arduino controller when start button pressed. It counts

continuously for 5 seconds intervals. Based on Arduino IDE it processed the pulses and display

the RPM in LCD with 5% accuracy.

Circuit Diagram



Project title: FLEXIBLE OBJECT COUNTER

Project Supervisor: Dr.G.Sugumaran


Level Diploma Project done by students which is given below: S No Student ID Name of the Student Section

1 22J15155 AL-MAHALAB AHMED HAMED AL ADAWI

2 22S13427 Ashraf Mattar

Masoud

Al Ham'saidi

3 22S12308 Ghuassan Abdullah

Khamis Al-Mahrouqi

4 22J14332 Meshal Said Mohammed Al Raqmi

5 22S12205 Mohammed Hamad Awadh Al-Mandhari

6 22S14272 SAIF KHALAF SAIF

AL HARRASI

ABSTRACT:

Object counters are extensively used in industries. Normally, these are made of expensive

microcontrollers or processors. For small-scale industries, this means a lot of cost. In this project

a simple circuit that can count objects without using any costly microcontroller. Count the objects

IR transmitter (IR LED1) is placed on one side of the conveyor belt on which objects move. On

the other side is a phototransistor L14F1 (T1) that senses the transmitted IR beam. When an

object passes between the transmitter and receiver, it obstructs the IR beam. IC 555 is given as

clock to dual up-counter CD4518. The counter increments on every positive edge of the clock,

giving a BCD output on pins 3 to 6. BCD value is given to seven-segment display driver 74LS47,

which displays the number on seven-segment display. When the BCD count reaches 9, Counter

is reset by AND gate 7408.

Circuit Diagram



Project title: A Hybrid Switching Scheme For LLC Series-Resonant Half-Bridge

DC-DC Converter In A Wide Load Range

Level Advanced diploma Semester: I Project Supervisor: Dr. Annamalai Muthu


Description about the Project:

This project presents a hybrid switching scheme for LLC series-resonant half-bridge

(SRHB) DC-DC converter. The concept proposed hybrid switching scheme is changing the

switching mode to improve power efficiency in a wide load range. The SRHB converter operates

in three different switching modes depending on the output load condition. This three switching

schemes provides efficient operation of system at different load condition. The simulation and

Digital control of the system facilitates the implementation of the proposed hybrid switching.

Hence high efficiency is achieved with a constant output voltage over wide load range.

Batch No 4 Lecturer Dr. Annamalai


1 22S12241 Asad Ali AL-Hashmi

2 PT22S168160 Mohamood Abdullah AL-Saqri



Project title: Smart Car to Reduce Risk of Accidents Level Advanced diploma Semester: I Project Supervisor: N.Murali



The the motor microcontroller is used to generate the PWM and direction signals for the h-bridge.

We determined for simplicities sake that we would not change the PWM duty and therefore the motor

speed. This still works well for our application because we really only need the motor to turn on in the

right direction. Our circuit board for the motor control can be seen in figure 2.5 .The logic that passes

the PWM to the different drivers based on the desired direction is shown in truth table form in table

2.3. This shows that depending on the position that a sensor is in when it is detecting a threatening

Batch No 1 Lecturer Mr. Murali


1 22s13160 Abdulmajeed Abdullah Al-alawi

2 22s13145 Saif Ahmed Al-rawhi

3 22s13278 Issa Hamood Al-toubi

4 22s13274 Saoud Shikhan Al-toubi

5 22s13466 Hashim Moosa Al-toubi

6 22s12106 Mohammed Qaswer Al-hiji

obstacle and which sensor is detecting the obstacle, the motor can work in different directions to move

the car away from the approaching obstacle.



Project title: CHOPPER FED SPEED CONTROL OF DC MOTOR

USING PI CONTROLLER Project Supervisor: PANDIMADEVI.G Semester: I Academic year:2017-2018

Level AD DIPLOMA


1 22s1515389 Shahlaa Mabrouk EE

2 22s13268 Muzna mohammed AL Amri EE

3 22j14215 Remal Al kindi EE

4 22j14155 sara saif Al hrrasi EE

5 22j1412 AlGhalia sultan AL sultani EE

6 22j14248 Mayar suliman Al-maskrie EE

ABSTRACT:

The speed of the separately excited DC motor can be controlled from below and above the rated

speed by using buck converter. This paper presents the speed control methodology by varying armature

voltage of the DC motor. The chopper gives variable voltage to the armature of the motor for achieving

desired speed using Proportional Integral (PI) controller. The reason behind using PI controller is it

removes the delay and provides fast control. The modeling of separately excited DC motor is done and

the complete layout of DC drive mechanism is obtained. The reference signal is compared with triangular

carrier signal and to produce the PWM pulses for chopper switch. The simulation model is constructed

in the MATLAB/SIMULINK. The simulated output parameters of the DC motor such as; armature current,

voltage, speed, torque, and field current are analyzed.

Circuit Diagram



Project title: Conventional Design of Distribution Transformer

Project Supervisor: Mr. M. Srinivasan


Level Advanced Diploma


1 22J14156 Al Anood Saoud Khalf Al Nabhani EE

2 22J14153 Jawaher Salim Said Al Durai EE

3 22J14166 Rasha Rashed Mattar Al Shukaili EE

4 24J1422 Wadha Khamis Nasser Al Aamri EE

ABSTRACT:

The main aim of this project is to design a distribution transformer with minimum

manufacturing cost and losses, at the same time meeting various performance

requirements.

The following design ratings are considered for the distribution transformer. 3Φ, 25 kVA,

11000 / 433 V, 50 Hz, 3phase, delta / star, core type, oil immersed natural cooled distribution

transformer. There are two types of design such as cruciform core and 3-stepped core have been

done in the project.



Project title: Automatic Switching of Power suppy.

Project Supervisor: Dr. D.VIMALAKEERTHY Semester: I ACADEMIC YEAR: 2017-2018 LEVEL B.Tech _ I


No. Student ID Name of the Student Section

1 22S12359 Humaid Hedaib Hamed Al Hashimi EE Section 2 72S121 Ibrahim Ahmed Mohammed Al Hinai EE Section

3 22S12261 Mahmood Said Mohammed Al-Abri EE Section

4 22S12162 Mahmood Salim Mohamed Al-Sulaimi EE Section 5 22J1282 Manea Ali Said ALOmairi EE Section

Description about the project: Power Electronics and Advanced Control technologies have made it possible to mitigate power quality

problems and maintain the operation of sensitive loads. Among power system disturbances, voltage

sags, swells and harmonics are some of the severe problems to the sensitive loads. The series

compensation method is best suited to protect such loads against those disturbances. The use of a series

compensator (SC) to improve power quality is an isolated power system is investigated. The role of the

compensator is not only to mitigate the effects of voltage sag, but also to reduce the harmonic distortion

due to the presence of nonlinear loads in the network. In this project, a series compensator is proposed, a

method of harmonic compensation is described and investigated. The modeling and simulation of the

proposed series compensator was implemented in Matlab Simulink work space. Simulation results

showed that the proposed series compensator was efficient in mitigating voltage harmonics and thus

improve the power quality of the isolated power system.

Circuit diagram

Without Compensator

With Compensator



Project title: Z-SOURCE FIVE LEG INVERTER CONTROLLED 3Ø INDUCTION

MOTOR Project Supervisor: M. Sivakumar Semester: I Academic year: 2017-2018

Level B.Tech. (Phase- I) Project done by students which is given below: S No Student ID Name of the Student Section

1 72S14292 HAMOOD HAMED OBAID AL KALBANI

3

2 22S12229 MAJID SHAIKHAN ABDULLAH ALABRI

3 PT72S1510 MOHAMMED NASSER MOHAMMED AL-ALAWI

4 22S12415 MURSHID MUBARAK SUWAID ALSIYABI

5 72S14297 YAQOOB ABDULLAH SANAIDI AL-SHUALI abstract:

The use of electric motors in industry and control of these motors is a topic of great importance.

User always looking for ways to control the loads with minimum cost, maximum efficiency and

minimum dimensions of the control system. In many cases two or many loads need to be

controlled independently.

But often two methods are employed for controlling two three-phase loads.

First method : 2 inverter & 12 switches for each load

Second method : one inverter for 2 load & 2 loads are connecting in parallel

in a single inverter. Here no independent control is possible.

But in the proposed novel Five Leg Inverter FLI and the Nine-Switch Inverter (NSI) has the

independent control of two three-phase loads.

In FLI, The DC voltage source is shared between the two loads, the voltage across each load

is less than in the case of a VSI. Therefore, a larger DC voltage source needs to be used in this

method which increases system cost and size. When the system is operating with light-load the

dc-link voltage will increase infinitely which causes voltage-drops at the dc-link. This will make

the system unstable and the dc-link voltage will be uncontrollable. To overcome these

limitations, high performance Z-source structure is employed. The modulation of the z-source

five leg inverter has two PWM methods for controlling Z-source five leg inverters. These

methods include simple-boost PWM and maximum-boost PWM.

In FLI, since the DC voltage source is shared between the two loads, the voltage across each

load is less than in the case of a VSI. Larger DC voltage source can be used in this method which

may increase the efficiency.

BLOCK Diagram

Simulation Diagram

SIMULATION Diagram



Project title: NCT Automatic timer based power switch off Level B.Tech-II Semester: I Project Supervisor: N.Murali



When the receiver is pressed the Arduino board will put pin 2 in HIGH state, meaning

5V on pin 2. This voltage is used to drive the transistor that will switch ON the relay and the load

(in our case the fan) will be powered from the main power supply. You cannot use the 5V from

the USB to power up the transistor and the LOAD because the USB port usually delivers only

100mA, and this is not enough to switch the relay and the LOAD. That is why you must use an

external power supply (Vcc) that is between 7 to 12 volts to power up the Arduino board and the

Batch No 1 Lecturer Mr. Murali


1 22S12372 Issa Saleh AL-Tamtami

2 32S12236 Moosa Fadhil AL-Hinai

3 22S12290 Said Mansoor AL-Hashmi

4 22S127 Ishaq sulaiman Al-azri

5 72S1259 Alazher said AL-Busaidi

6 72S1277 Abdullah khlaf Al-Rabaani

7 22S11119 Ahmed hamed AL-Mahrizi

transistor + relay. The load uses its own power supply, for instance if you use a light bulb then

you might connect it to the 110/220V mains or any other power source.



Project title: Thyristor Based Speed Control Techniques Of Dc Motor:

A Comparative Analysis Project Supervisor: Dr.G.Sugumaran


Level Bachelor


1 22j13268 Hind Said Hamed AL-siyabi

2 22j13152 Noof Shamis Nasser AL-aamri

3

4

5

ABSTRACT:

The versatile control characteristics of DC motor have contributed in the extensive use of DC

motor in the industry. With the increasing use of power semi-conductor units, the speed control of DC

motor is increasingly getting sophisticated and precise. Speed of the DC motor is controlled by controlling

the armature voltage. Armature voltage is controlled using different single phase AC/DC converter. Half

wave converter, semi converter, full converter and dual converter are some of the Thyristor based circuits

which are used for speed control of DC motor. This project studies different speed control techniques of

DC motor and makes a comparative study of different converter based speed controller techniques

Circuit / simulation Diagram

Simulation diagram of Single phase fully controlled converter fed DC motor

Simulation diagram of Single phase dual controlled converter fed DC motor

Documents

Project title: Automatic Switching of Power suppy