EEE Seminar topics

EEE Seminar topics
Power System Contingencies (19) 
HVAC system
Process Automation Techniques 
Adaptive Piezoelectric energy harvesting circuit (20) 
Lightning Protection Zones
Modern Surge Arresters 
BiCMOS Technology (21) 
Electric Utility Industry .
End-Use Energy Efficiency Potential
Lightning Protection Using LFA-M (22) 
Aluminium Alloy Conductors
HalBach array 
Surge current protection using superconductors (23)
Magnetic Levitation
Fast quasi-static capacitance extraction using CSurf
Electrical and chemical diagnostics of transformer insulation (24) 
Micro Batteries 
Magnet less Motors
Seasonal Influence on Safety of Substation Grounding(25) 
EL Lightning 
Piezoelectric Actuators 
Microprocessor Based Alternator Synchronisation(26)
IT Integration in Electrical Engg.
Piezo Electric Motors
Protection Of Transmission Systems By Using The Global Positioning System (27) 
Electrostatic precipitator 
Green power storage
Electromagnetic Bomb (5) 
Clean Electricity
Microturbine Generator Systems
Load monitoring (6) 
Infrared thermography
MOCT (Magnetic Optical Current Transformer)
Voltage Sag Analysis (7)
Distribution System Relaying
Electrolytic Hydrogen: A Future Technology for Energy Storage
Night Vision ( 
Can Machines Think ?
Adaptive Piezoelectric energy harvesting circuit
Liquid Electricity
Magneto hydrodynamic Power Generation Technology (MHD) (1) 
Narrowband Power line Communication
Buck Boost Transformer
Biomass Fuelled Power Plant (2) 
Condition Based Maintenance of Underground Cable Systems
Contact less energy transfer system
Compensation of harmonic currents utilizing AHC (3) 
Matrix Inversion Generator
Solar Power Generation
Condition Based Maintenance of Underground Cable Systems (4) 
On-Line Detection Of Shorts In Fields Of Turbine Generator Rotor
Flywheel Energy Storage System (FESS)
Modelling of Transformers with Internal Incipient Faults(9)
Digital Testing of High Voltage Circuit Breakers
Surge Current Protection Using Superconductors

Reference: http://www.seminarprojects.com/Thread-electrical-seminar-lists3#ixzz1mkJPGcFd

IEEE Electrical Projects list

IEEE Electrical Projects list

1).Sensorless Indirect Stator Field Orientation Speed Control for Single-Phase Induction Motor Drive 2) Rotor-flux-oriented control of a single-phase induction motor drive 3) Two-phase induction motor drives 4) Single-phase induction motor with an electronically controlled capacitor 5) Vector control of single-phase induction machine with maximum torque operation 6) Vector control strategies for single-phase induction motor drive systems 7) Adjustable-speed single-phase IM drive with reduced number of switches 8) Space-vector PWM technique for two-phase inverter-fed two phase induction motors 9) A three-leg voltage source inverter for two-phase AC motor drive systems 10) PWM methods for two-phase inverters 11) A novel PWM technique with two-phase modulation 12) Sensorless IFOC for single-phase induction motor drive system 13) DSP based speed estimation of single phase induction motors 14) A high-performance sensorless indirect stator flux orientation control of induction motor drive 15) MRAS observers for sensorless control of doubly-fed induction generators Other topics. These are from IEEE energy conversion journal. 16) Parameter sensitivity analysis of an improved open-loop speed estimate for induction motor drives 17) Influence of Saturation Level on the Effect of Broken Bars in Induction Motors Using Fundamental Electromagnetic Laws and Finite Element Simulations 18) A New Rapid Nonlinear Simulation Method for Switched Reluctance Motors 19) Slotless PM Brushless Motor With Helical Edge-Wound Laminations 20) An Unsymmetrical Two-Phase Induction Motor Drive With Slip-Frequency Control 21) Dynamic Stability Enhancement and Power Flow Control of a Hybrid Wind and Marine-Current Farm Using SMES 22) Adaptive Grid-Voltage Sensorless Control Scheme for Inverter-Based Distributed Generation 23) Maximum Power Tracking Control for a Wind Turbine System Including a Matrix Converter 24) Integration of an Energy Capacitor System With a Variable-Speed Wind Generator 25) Analytical Design Model for Surface-Mounted Permanent-Magnet Synchronous Machines 26) Multivariable Self-Tuning Control of a Turbine Generator System 27) Harnessing High-Altitude Solar Power 28) A Novel Scheme to Connect Wind Turbines to the Power Grid 29) A Knowledge-Based Approach for Control of Two-Level Energy Storage for Wind Energy Systems 30) Development of a Switched-Reluctance Motor Drive With PFC Front End 31) Online Synchronous Machine Parameter Extraction From Small-Signal Injection Techniques 32) Sensorless Slowdown Detection Method for Single-Phase Induction Motors 33) Behavior of the Three-Phase Induction Motor With Spiral Sheet Rotor 34) Development of a MATLAB/Simulink Model of a Single-Phase Grid-Connected Photovoltaic System 35) An improved sensorless driving method for SRM using a phase-shift circuit technique 36) Optimization and Evaluation of Torque-Sharing Functions for Torque Ripple Minimization in Switched Reluctance Motor Drives 37) Experimental Discussions on a Shaft End-to-End Voltage Appearing in an Inverter-Driven Motor 38) Natural Capacitor Voltage Balancing for a Flying Capacitor Converter Induction Motor Drive 39) Fault Detection and Protection of Induction Motors Using Sensors 40) Induction Motor Equivalent Circuit Including the Stray Load Losses in the Machine Power Balance. Please Use Search http://www.seminarprojects.com/search.php To Get More Information About

World’s Smallest Electronic Circuit Using Nanotechnology

Technology has been evolving time to time, from complex wired circuits to Integrated circuits(IC). Nowadays almost all electronic gadgets like smart phones, computers, global positioning systems(GPS), tablets and so on use Integrated circuits as they are more compact and efficient. In this era of nanotechnology, scientists are scaling every possible technology to nano scale without compromising its efficiency. Nano circuits were made by scaling Electronic circuits in the nano range, and that too, by rectifying the disadvantages of Integrated circuits like heat dissipation.

Recently a team of researchers headed by Guillaume Gervais of McGill’s Physics department and Mike Lilly from Sandia National Laboratories successfully developed one of the world’s smallest electronic circuits. It consisted of only two wires separated by a distance of 15 nanometers. The distance is so small that it counts up to only 150 atoms!!

On further studies, the researchers observed that a charge on one wire induces a charge on the other. This charge induced on the second wire may be positive or negative irrespective of the first wire. That is, the current flowing through both wires can be in the same or opposite direction. This experiment based on Quantum physics gave the researchers an idea about the behavior of electronic circuits in nano scale.

In case of nano circuits, heat dissipation is tremendously reduced. Although heat dissipation occurs, since the wires are very close, the heat dissipated by one will be absorbed by the other. In nano scale, electronic interactions between circuits become very complex, since a phenomenon called Coulomb drag occurs where current in one wire induces a voltage in the other wire by coulomb interactions alone. Nano circuits are economic if manufactured in large quantities.

 The major institutions that funded this research were Natural science and Engineering research council of Canada, the Fonds de recherché Nature et technologies of Quebec, the Canadian Institute of advanced research and the center of Integrated Nanotechnologies at Sandia National laboratories.

Next Generation 3D Holographic Displays

The Hollywood film industry went to a whole new level after 3-D movies like James Cameron’s “Avatar” to the latest “Underworld Awakening”. The perspective of watching movies through a whole new dimension is believed to have brought movie fans closer to reality. But, people often complain about headaches and other eye problems after watching a movie continuously for 2 to 3 hours.   But, due to the awesome movie effects, most companies are ignoring this problem and are introducing more and more 3D enabled gadgets like 3D televisions and smart phones. Smart phones like LG Optimus 3D and HTC evo 3D give us a glass free 3D effect using auto-stereoscopic technology. Even gadgets like these produce headaches and eye pain after constant viewing for hours. The case is same with the 3D smart TV or watching a 3D movie with glasses in a theater.

These problems can be overcome by the newly developed holographic displays. They produce a 3D display that can be viewed with ease, without pain in our eyes. The technology is in its early stage developments and hence only low quality holographic displays have been shown till now.

A group of researchers from a Belgian firm “Imec” have created a MEMS chip that can be used to make holographic displays. First a wafer of silicon is taken and a layer of silicon dioxide is grown on it. Then the silicon dioxide is etched away such that grid pixels of size 150 nm, which are shallower than the surrounding silicon dioxide layer, are formed. The entire grid is then topped with fine layer of reflective aluminum. Then a beam of laser light is made to fall in this wafer in an angle such that the light is interfaced with itself. Usually, the pixels are moved to make the illusion of image movement. Instead of this method, a chip covered with tiny MEMS is designed to easily create a moving holographic image. The MEMS is made to move up and down on the chip’s surface to produce the image.

If this technique is successful in making high quality holography then the problems associated with 3D viewing will be eliminated and we can get a comfortable 3D vision. This will surely pave way to watching 3D movies with ease.

Electronic siren circuit

This is a compact electronic siren circuit based on three transistors.This circuit is suitable for in corporating with other alarm or siren projects such as burglar alarms, automatic factory sirens etc or a simple push to on alarm.

The  electronic siren circuit given here  is  based on a complementary transistor pair consisting of Q2 & Q3 (BC557 & BC 37)  wired as an astable multivibrator oscillator,which directly drives the speaker.The transistor Q1 is used to provide a full charge on capacitor C2 when power is turned ON. When push button switch S1 is pressed , the capacitor C2 slowly discharges through resistor R8.This makes the circuit to  oscillate at a low frequency that increases to a high frequency and kept indefinitely as the capacitor is fully discharged. When the switch P1 is released, the output  frequency decreases slowly as C2 is charged to the  positive voltage through resistance R6 and the Base-Emitter junction of tramsistor Q2. When C2 is fully charged to the positive battery voltage the  circuit stops oscillating.

Notes.

• A 12 V battery or a a well regulated 12V DC power supply can be used to power the circuit.
• Assemble the circuit on a good quality PCB or common board.
• The switch S1 can be used to activate the alarm.
• The switch S2 can be used as a power switch.
• You can experiment on the tone of alarm by using different values for C2 and R8.

PWM Motor Speed Control

Here is a simple PWM motor speed controller circuit that can be used for varying the speed of low power DC motors . The variation in speed is achieved by varying the duty cycle of the pulse supplied to drive the motor. Of the two gates of IC CD40106B , N1 is wired as an inverting Schmitt Trigger astable multi vibrator for producing pulses and N2 as an inverting buffer to drive the transistor during positive cycles at base. The duty cycle is set from resistor R2. R1 limits the base current of transistor SL 100. The circuit is ideal for controlling toy motors,hand held mini fans , small blowers etc.

Notes .

• By varying R2 duty cycle can be varied from 0% to 100%.
• For identifying pins of SL 100 ,the pin that is connected to casing is collector,the pin near to notch is emitter and the one remaining is base.

Speaker to microphone converter circuit

Description.
This circuit is a simple approach for converting a loud speaker into a microphone. When the sound waves fall on the diaphragm of a speaker, there will be fluctuations in the coil and there will be a small proportional induced voltage. Usually this induced voltage is very low in magnitude and useless. Here in the circuit the low voltage is amplified using transistors to produce a reasonable output. The transistor Q1 is wired in common base mode and produces the required voltage gain. The transistor Q2 is wired as an emitter follower to produce enough current gain. The voice quality of this circuit will not be as much as a conventional microphone but quite reasonable quality can be obtained. To set up the circuit, keep the preset R2 at around 10 Ohms and connect the battery. Now adjust R2 to obtain the optimum sound quality.

Notes.

• Assemble the circuit on a general purpose PCB.
• Power the circuit from a 9 V PP3 battery.
• A 3 inch speaker can be used as K1.
• All capacitors must be rated at least 15V.
• An 8 Ohm speaker or head phone can be connected at the output to hear the picked sound

Vacuum tube

In electronics, a vacuum tube, electron tube (in North America), or thermionic valve (elsewhere, especially in Britain), reduced to simply "tube" or "valve" in everyday parlance, is a device that relies on the flow of electric current through a vacuum. Vacuum tubes may be used for rectification, amplification, switching, or similar processing or creation of electrical signals. Vacuum tubes rely on thermionic emission of electrons from a hotfilament or hot cathode, that then travel through a vacuum toward the anode (commonly called the plate), which is held at a positive voltage relative to the cathode. Additional electrodes interposed between the cathode and anode can alter the current, giving the tube the ability to amplify and switch.

Vacuum tubes were critical to the development of electronic technology, which drove the expansion and commercialization of radio communication and broadcasting, television, radar, sound reproduction, largetelephone networks, analog and digital computers, and industrial process control. Although some of these applications had counterparts using earlier technologies, such as the spark gap transmitter or mechanical computers, it was the invention of the triode vacuum tube and its capability of electronic amplification that made these technologies widespread and practical.

In most applications, vacuum tubes have been replaced by solid-state devices such as transistors and other semiconductor devices. Solid-state devices last much longer, and are smaller, more efficient, more reliable, and cheaper than equivalent vacuum tube devices. However, tubes still find particular uses where solid-state devices have not been developed or are not practical, or where the tube device is regarded as having superior performance over the solid-state equivalent, as can be the case with some devices used in professional audio. Tubes are still produced for such applications and to replace those used in existing equipment such as high-power radio transmitters.

Three phase auto changer circuit

This circuit is a modification of  High & Low voltage cut-off with delay& alarm circuit  appeared in Circuits today, which I have tried and found to be quite reliable. You can adopt this circuit with small modification. Use a transformer with secondary 15 – 0 – 15 AC Volt at 500mA, for 18Volt relay operation. Normally any modern electrical / electronic equipment can operate with 230 Volt ± 15% AC supply. That is, it can stand normal voltage operating range of 195 to 265 Volts. It may misbehave beyond this voltage range. You can choose the practical voltage required for the low end high cut off to change over to other phase.

Circuit diagram.

• Set VR3 for minimum voltage to switch on the relay (Say 195 Volt input).
• Set VR1 to switch off the relay above a particular voltage (say 260Volt input).
• You can use a 100μF 40 Volts good make in parallel with relay for chatter free operation.
• Each Phase you have to use one module as above.
• The relay interconnections are shown in the connection diagram above.
• T1 can be a 15-015 V secondary, 230V primary, 500mA step down transformer.

Digital thermometer circuit.

A simple digital thermometer circuit with out a micro controller and having a seven segment LED read out is shown here. The circuit is based on three ICs: CA3162, CA3161 and LM35. CA3162 is a monolithic analogue to digital (A/D) converter that has BCD output. The A/D converter inside the IC is a dual slope type with differential inputs. The IC has an internal timing circuitry and hold function. When the hold function is enables, the output IC latches itself to the present state. CA3161 is a monolithic BCD to seven segment converter IC. It can directly drive a seven segment display and there is no need for current limiting resistors. LM35 is a three terminal precision temperature sensor IC from National semiconductors. The output of LM35 is highly linear and has a scale factor of 10mV/C. The IC consumes only 60uA as standby current and is calibrated directly in degree Celsius.

About the circuit .

IC LM35 is used for sensing the temperatures. A voltage proportional to the temperature will be available at pin 2 of the LM35 and this voltage is coupled to the high input pin (pin11) of the CA3162. CA3162 does the job of converting this analogue voltage in to a BCD format. POT R1 connected at pin 13 of the CA3162 is used for gain adjustment while POT R2 can be used for ZERO adjustment. Capacitor C2 is the integrating capacitor of the A/D converter circuitry inside the IC. The working of the CA3162 is as follows, the voltage applied to the input pin (pin11) is converted into a current (using the built in V/I converter circuit) that charges the integrating capacitor C2 for a preset amount of them. Then the integrating is disconnected from the V/I converter circuit and a reference constant current source is connected to the integrating capacitor. The time taken for the charge to restore to its original value is noted and the number of clock cycles elapsed during this time will be a measure of the charge induced by the input voltage (voltage applied to pin 11). The point of restoration is sensed using an internal comparator which latches the counter and the count is then multiplexed into the BCD outputs and the entire cycle is repeated. The hold pin CA3162 (pin6) can be used for running the IC in different modes. When the hold pin is grounded or left open the IC runs in low speed mode (sampling rate is 4Hz). When hold pin is held at +5V, the IC runs in high speed mode i.e. a sampling rate of 96Hz. When the hold pin is held at a fixed 1.2V, the BCD output latches to the current state. C1 is the power supply bypass capacitor whose job is to bypass noise if any from the power supply line.

The next section of the circuit is the BCD to seven segment decoder plus display driver section. For that purpose CA3161 is used. The BCD output pins of the CA3162 are connected to the input pins of the CA3161. Transistors Q1, Q2, Q3 common anode terminals of the corresponding seven segments displays. Q1, Q2, Q3 are driven by the 4, 3, 5 pins (digit driver pins) of the CA3162 respectively

About the circuit .

IC LM35 is used for sensing the temperatures. A voltage proportional to the temperature will be available at pin 2 of the LM35 and this voltage is coupled to the high input pin (pin11) of the CA3162. CA3162 does the job of converting this analogue voltage in to a BCD format. POT R1 connected at pin 13 of the CA3162 is used for gain adjustment while POT R2 can be used for ZERO adjustment. Capacitor C2 is the integrating capacitor of the A/D converter circuitry inside the IC. The working of the CA3162 is as follows, the voltage applied to the input pin (pin11) is converted into a current (using the built in V/I converter circuit) that charges the integrating capacitor C2 for a preset amount of them. Then the integrating is disconnected from the V/I converter circuit and a reference constant current source is connected to the integrating capacitor. The time taken for the charge to restore to its original value is noted and the number of clock cycles elapsed during this time will be a measure of the charge induced by the input voltage (voltage applied to pin 11). The point of restoration is sensed using an internal comparator which latches the counter and the count is then multiplexed into the BCD outputs and the entire cycle is repeated. The hold pin CA3162 (pin6) can be used for running the IC in different modes. When the hold pin is grounded or left open the IC runs in low speed mode (sampling rate is 4Hz). When hold pin is held at +5V, the IC runs in high speed mode i.e. a sampling rate of 96Hz. When the hold pin is held at a fixed 1.2V, the BCD output latches to the current state. C1 is the power supply bypass capacitor whose job is to bypass noise if any from the power supply line.

The next section of the circuit is the BCD to seven segment decoder plus display driver section. For that purpose CA3161 is used. The BCD output pins of the CA3162 are connected to the input pins of the CA3161. Transistors Q1, Q2, Q3 common anode terminals of the corresponding seven segments displays. Q1, Q2, Q3 are driven by the 4, 3, 5 pins (digit driver pins) of the CA3162 respectively

Electronic mosquito repeller

Here is the circuit diagram of an ultrasonic mosquito repeller.The circuit is based on the theory that insects like mosquito can be repelled by using sound frequencies in the ultrasonic (above 20KHz) range.The circuit is nothing but a PLL IC CMOS 4047 wired as an oscillator working at 22KHz.A complementary symmetry amplifier consisting of four transistor is used to amplify the sound.The piezo buzzer converts the output of amplifier to ultrasonic sound that can be heard by the insects.

REMOTE-CONTROLLED FAN REGULATOR

Using this circuit, you can change the speed of the fan from your couch or bed. Infrared receiver module TSOP1738 is used to receive the infrared signal transmitted by remote control. The circuit is powered by regulated 9V. The AC mains is stepped down by transformer X1 to deliver a secondary output of 12V-0-12V. The transformer output is rectified by full-wave rectifier comprising diodes D1 and D2, filtered by capacitor C9 and regulated by 7809 regulator to provide 9V regulated output. Any button on the remote can be used for controlling the speed of the fan. Pulses from the IR receiver module are applied as a trigger signal to timer NE555 (IC1) via LED1 and resis- tor R4. IC1 is wired as a monostable

multivibrator to delay the clock given to decade counter-cum-driver IC CD4017 (IC2). Out of the ten outputs of decade counter IC2 (Q0 through Q9), only five (Q0 through Q4) are used to control the fan. Q5 output is not used, while Q6 output is used to reset the counter. Another NE555 timer (IC3) is also wired as a monostable multivibrator. Combination of one of the resistors R5 through R9 and capacitor C5 controls the pulse width. The output from IC CD4017 (IC2) is applied to resistors R5 through R9. If Q0 is high capacitor C5 is charged through resistor R5, if Q1 is high capacitor C5 is charged through resistor R6, and so on. Optocoupler MCT2E (IC5) is wired as a zero-crossing detector that supplies trigger pulses to monostable multivibrator IC3 during zero crossing. Opto-isolator MOC3021 (IC4) drives triac BT136. Resistor R13 (47- ohm) and capacitor C7 (0.01μF) combination is used as snubber network for triac1 (BT136). As the width of the pulse decreases, firing angle of the triac increases and speed of the fan also increases. Thus the speed of the fan increases when we press any button on the remote control. Assemble the circuit on a generalpurpose PCB and house it in a small case such that the infrared sensor can easily receive the signal from the remote transmitter.