Engineering Commons^™

Dayalbagh Educational Institute Soft Computing Edge Cutting Technology Lab (Deisel), D. K. Chaturvedi

D. K. Chaturvedi Dr.

Dayalbagh Educational Institute Soft Computing Edge Cutting Technology Lab (DEISEL) Group consiting of a Professor Incharge, four Teaching Staff members, five Non-Teaching Staff members, five Ph.D. Students, six M. Tech. Students. The objective of DEISEL is to to exploit the tolerance for imprecision uncertainty, approximate reasoning and partial truth to achieve tractability, robustness, low solution cost, and close resemblance with human like decision making to find an approximate solution to an imprecisely/precisely formulated problem. The challenge is to exploit the tolerance for imprecision by devising methods of computation which lead to an acceptable solution at low cost. This, in essence, …

Optimal Allocation Of Tcsc Devices Using Genetic Algorithms, Almoataz Youssef Abdelaziz

Almoataz Youssef Abdelaziz

This paper presents an approach to find the optimal location of thyristor-controlled series compensators (TCSC) in a power system to improve the loadability of its lines and minimize its total loss. Also the proposed approach aims to find the optimal number of devices and their optimal ratings by using genetic algorithm (GA) with taking into consideration the thermal and voltage limits. Examination of the proposed approach is carried out on the IEEE 9-bus system.

A Classification Technique For Protection Coordination Assessment Of Distribution Systems With Distributed Generation, Almoataz Youssef Abdelaziz

Almoataz Youssef Abdelaziz

In this paper a novel approach is presented to study the impact of distributed generation on recloser-fuse coordination. This approach is based on the assessment of the recloser-fuse coordination due to the penetration of distributed generation with specified location and capacity for a given fault location. This assessment process acts as a classifier, based on finding the operating sequence of all reclosers and fuses in the path from the faulted node to the substation. This sequence is compared with a pre-required sequence obtained from the protection coordination philosophy, and then provides the distribution system operator with a result indicating whether …

Optimal Tuning Of Power System Stabilizers Using Modified Particle Swarm Optimization, Mahdiyeh Eslami, Hussain Shareef, Azah Mohamed

Dr. Mahdiyeh Eslami (مهدیه اسلامی)

No abstract provided.

Improved Particle Swarm Optimization With Disturbance Term For Multi-Machine Power System Stabilizer Design, Mahdiyeh Eslami, Hussain Shareef, Azah Mohamed, Mohammad Khajehzadeh

Dr. Mahdiyeh Eslami (مهدیه اسلامی)

No abstract provided.

Tuning Of Power System Stabilizers Using Particle Swarm Optimization With Passive Congregation, Mahdiyeh Eslami, Hussain Shareef, Azah Mohamed, S. P Ghoshal

Dr. Mahdiyeh Eslami (مهدیه اسلامی)

No abstract provided.

Design A Stable 14-To-20-Ghz Source, M. Moghavvemi, A. Attaran, Hossein Ameri Mahabadi

Hossein Ameri Mahabadi

Careful selection of key components and the use of straightforward multiplication schemes can be applied to the design of a low-noise frequency synthesizer for Ku-band signals to 20 GHz.

Control Of A High-Performance Z-Source Inverter For Fuel Cell/Supercapacitor Hybrid Electric Vehicles, Omar Ellabban, Joeri Van Mierlo, Philippe Lataire

Omar Ellabban

This paper presents a supercapacitor (SC) module connected in parallel with fuel cell (FC) stack to supply a high-performance Z-Source Inverter (HP-ZSI) feeding a three phase induction motor for hybrid electric vehicles applications. The supercapacitor is connected between the input diode and the bidirectional switch of the highperformance ZSI topology. The indirect field-oriented control (IFOC) method is used to control an induction motor speed during motoring and regenerative braking operations to produce the modulation index and a dual loop controller is used to control the Z-network capacitor voltage to produce the shoot-through duty ratio. MATLAB simulation results verified the validity …

Gas Turbine, Vijaya Krushna Varma Mr

VIJAYA KRUSHNA VARMA Mr

Varma designed ultra modern and high efficiency turbines which can use gas, steam or fuels as feed to produce electricity or mechanical work for wide range of usages and applications in industries or at work sites. Varma turbine engines can be used in all types of vehicles. These turbines can also be used in aircraft, ships, battle tanks, dredgers, mining equipment, earth moving machines etc, Salient features of Varma Turbines. 1. Varma turbines are simple in design, easy to manufacture, easy to operate and maintain. 2. Varma turbines are less expensive. 3. Varma turbines have a great power to weight …

Closing The Gap Between The Industry And Higher Education Institutions- Case Examples From East African Region, Deogratias Harorimana Mr

Dr Deogratias Harorimana

Much complained about is the quality of graduates Universities put on the labour market. Less talked about however is why knowledge institutions seems to be bad knowledge managers. In this presentation I argue that DIRECT collaborative relationship between Industry,Governments and Higher Education Institutions is a per-requisite.Good relationship is key to building such a successful knowledge transfer strategies between Industries and Educational and Research Institutions. This paper explores what makes a good Knowledge Transfer Partnership Strategy and highlights some key lessons for businesses, Universities and Government bodies. This paper was a Key note presentation to the Annual International Conference on Building …

Call For Papers Of Iceea10, Toufik Rekioua Pr

REKIOUA Djamila Dr

We are pleased to announce that we are organizing an international conference on electrical engineering, electronics and Automatic (ICEEA'10) which will take place in Bejaia (Algeria) on 2-3 November 2010 (see call for papers)

Reconfigurable 4-Frequency Cmos Oscillator Based On Aln Contour-Mode Mems Resonators, Matteo Rinaldi, Chengjie Zuo, Jan Van Der Spiegel, Gianluca Piazza

Chengjie Zuo

This paper reports on the first demonstration of a reconfigurable Complementary Metal Oxide Semiconductor (CMOS) oscillator based on MicroElectroMechanical System (MEMS) resonators operating at 4 different frequencies (268, 483, 690 and 785 MHz). A bank of multi-frequency switchable AlN Contour-Mode MEMS resonators (CMRs) were connected to a single CMOS oscillator circuit that can be configured to selectively operate in 4 different states with distinct oscillation frequencies. The phase noise (PN) of the reconfigurable oscillator was measured for each of the 4 different frequencies of operation showing values between -94 and -70 dBc/Hz at 1 KHz offset and PN floor values …

Modeling Large Modern Fossil-Fueled Steam-Electric Power Plant And Its Coordinated Control System For Power System Dynamic Analysis, Lin Gao

Lin Gao

Fossil-fueled steam-electric power plants have many outstanding advantages and are still one of the main power types in the world especially for non-European countries. The classic mathematic models are designed for traditional hydraulic governing steam turbine units. Single turbine and its control system models are used wildly for dynamic analysis in power system. Digital electro-hydraulic (DEH) control systems and coordinated control systems (CCS) are used in most of the modern large power boiler-turbine units. They are key elements in the operation of the power station and have great impact on the system responses to the frequency or load disturbances. But …

1.5-Ghz Cmos Voltage-Controlled Oscillator Based On Thickness-Field-Excited Piezoelectric Aln Contour-Mode Mems Resonators, Chengjie Zuo, Jan Van Der Spiegel, Gianluca Piazza

Chengjie Zuo

This paper reports on the first demonstration of a 1.5 GHz CMOS oscillator based on thickness-field-excited (TFE) piezoelectric AlN MEMS contour-mode resonators (CMRs). The measured phase noise is −85 dBc/Hz at 10 kHz offset frequency and −151 dBc/Hz at 1 MHz. This is the highest frequency MEMS oscillator ever reported using a laterally vibrating mechanical resonator. The high frequency operation has been enabled by optimizing the geometrical design and micro-fabrication process of TFE AlN CMRs, so that a low effective motional resistance around 50 Ω is achieved together with a high unloaded quality factor (Qu) approaching 2500 and simultaneously high …

Establishment Of Links Between University And Industry: The Objective Of The Period 2010/2014, Djamila Rekioua Pr

REKIOUA Djamila Dr

No abstract provided.

The Award For Best Publication Of The Summer Solstice (2010), Djamila Rekioua Pr

REKIOUA Djamila Dr

The award for best publication of the Summer Solstice this year (2010) was awarded to Mrs Rekioua Djamila, professor at the University of Bejaia, for her research on the topic of electric machines and power electronics in renewable energy;

Analysis Of Power System Frequency Responses With Hydro Turbines Incorporating Load Shedding, Lin Gao

Lin Gao

As shown in many recent works, the load-frequency behavior can be represented by system frequency response models especially for an islanding process. In this paper, a frequency response model incorporating an under-frequency load-shedding scheme is presented for islanding power system simulations. The model was applied for a realistic power system with hydro power generators. The hydro power generator model parameters were identified and similar responses were observed between the simulations and the accident records. The simulation results showed disadvantages of the primary frequency control systems of hydro power generators at the beginning of the load disturbances. The power system stability …

Multifrequency Pierce Oscillators Based On Piezoelectric Aln Contour-Mode Mems Technology, Chengjie Zuo, Nipun Sinha, Jan Van Der Spiegel, Gianluca Piazza

Chengjie Zuo

This paper reports on the first demonstration of multifrequency (176-, 222-, 307-, and 482-MHz) oscillators based on the piezoelectric AlN contour-mode microelectromechanical systems technology. All the oscillators show phase noise values between −88 and −68 dBc/Hz at 1-kHz offset frequency from the carriers and phase noise floor values as low as −160 dBc/Hz at 1-MHz offset. The same Pierce circuit design is employed to sustain oscillations at the four different frequencies; on the other hand, the oscillator core consumes 10 mW. The AlN resonators are currently wire bonded to the integrated circuit realized in the AMIS 0.5-μm 5-V complimentary metal-oxide-semiconductor …

Ghz Range Nanoscaled Aln Contour-Mode Resonant Sensors (Cmr-S) With Self-Sustained Cmos Oscillator, Matteo Rinaldi, Chiara Zuniga, Chengjie Zuo, Gianluca Piazza

Chengjie Zuo

This paper reports on the design and experimental verification of a new class of nanoscaled AlN Contour-Mode Resonant Sensors (CMR-S) for the detection of volatile organic chemicals (VOC) operating at frequencies above 1 GHz and connected to a chip-based CMOS oscillator circuit for direct frequency read-out. This work shows that by scaling the CMR-S to 250 nm in thickness and by operating at high frequencies (1 GHz) a limit of detection of ~35 zg/µm2 and a fast response time (<1 ms) can be attained. In addition, the capability to detect concentrations of volatile organic compounds such as 2,6 dinitroluene (DNT) as low as 1.5 ppb (4.7 ag/µm2) is experimentally verified.

Single-Ended-To-Differential And Differential-To-Differential Channel-Select Filters Based On Piezoelectric Aln Contour-Mode Mems Resonators, Chengjie Zuo, Gianluca Piazza

Chengjie Zuo

This paper reports on the first demonstration of single-ended-to-differential and differential-to-differential (S2D and D2D) channel-select filters based on single-layer (SL) and dual-layer-stacked (DLS) AlN contour-mode MEMS resonators. The key filter performances in terms of insertion loss (as low as 1.4 dB), operating frequency (250-1280 MHz), and out-of-band rejection (up to 60 dB) constitute a significant advancement over all other state-of-the-art RF MEMS technologies. The fabrication process, namely stacking of two piezoelectric AlN layers (600 nm each) and three Pt electrode layers (100 nm each), is fully compatible with the previously demonstrated AlN RF MEMS switch process (also post-CMOS compatible), which …

Design An X-Band Frequency Synthesizer, Hossein Ameri Mahabadi, A. Attaran, M. Moghavvemi

Hossein Ameri Mahabadi

This frequency synthesizer design aims at achieving low phase and high reliability for X-band digital microwave radio applications, using a commercial device and frequency tripling techniques.

Very High Frequency Channel-Select Mems Filters Based On Self-Coupled Piezoelectric Aln Contour-Mode Resonators, Chengjie Zuo, Nipun Sinha, Gianluca Piazza

Chengjie Zuo

This paper reports experimental results on single-chip multi-frequency channel-select filters based on self-coupled piezoelectric aluminum nitride (AlN) contour-mode microelectromechanical (MEMS) resonators. Two-port AlN contour-mode resonators are connected in series and electrically coupled using their intrinsic capacitance to realize multi-frequency (94–271 MHz), narrow bandwidth (~0.2%), low insertion loss (~2.3 dB), high off-band rejection (~60 dB) and high linearity (IIP3 ~100 dBmV) channel-select filters on the same chip. This technology enables multi-frequency, high-performance and small-form-factor filter arrays and makes a single-chip multi-band reconfigurable radio frequency (RF) solution possible in the near future.

Determination Of Material Emission Signatures By Ptr-Ms And Their Correlations With Odor Assessments By Human Subjects, Kwanghoon Han

Kwanghoon Han

The objectives of this study were to determine volatile organic compound (VOC) emission signatures of nine typical building materials by using proton transfer reaction-mass spectrometry (PTR-MS) and to explore the correlation between the PTR-MS measurements and the measurements of acceptability by human subjects. VOC emissions from each material were measured in a 50-l small-scale chamber. Chamber air was sampled by PTR-MS to determine emission signatures. Sorbent tube sampling and TD-GC/MS analysis were also performed to identify the major VOCs emitted and to compare the resulting data with the PTR-MS emission signatures. The data on the acceptability of air quality assessed …

Parameters Estimation Of A Fan System Using Artificial Neural Networks (Anns),, D. K. Chaturvedi

D. K. Chaturvedi Dr.

Electric Fans are very commonly used in the industries, domestic applications and in tunnels for cooling and ventila-tion purposes. Fan parameters estimation is an important task as far as the reliable operation of a fan system is con-cerned. Basically, a fan is mainly consisting of a single phase induction motor and therefore fan system parameters are essentially the electrical parameters e.g. resistances, reactances and some load parameters (fan blades).These parame-ters often change under varying operating conditions and the knowledge of these parameters is necessary to have opti-mum and efficient operation of the system. Therefore, fan system parameters are required to …

Short-Term Load Forecasting Using Soft Computing Techniques, D. K. Chaturvedi

D. K. Chaturvedi Dr.

Electric load forecasting is essential for developing a power supply strategy to improve the reliability of the ac power line data network and provide optimal load scheduling for developing countries where the demand is increased with high growth rate. In this paper, a short-term load forecasting realized by a generalized neu-ron–wavelet method is proposed. The proposed method consists of wavelet transform and soft computing technique. The wavelet transform splits up load time series into coarse and detail components to be the fea-tures for soft computing techniques using Generalized Neurons Network (GNN). The soft computing tech-niques forecast each component separately. The …

Programs Of Fuzy Systems, D. K. Chaturvedi

D. K. Chaturvedi Dr.

The zip file contains c programs of fuzzy system.

Matlab Program Of Genetic Algorithms, D. K. Chaturvedi

D. K. Chaturvedi Dr.

The zip file contains Matlab program of genetic algorithms and their varients.

Ann /Gn Programs, D. K. Chaturvedi

D. K. Chaturvedi Dr.

The file contains programms of multi layer feedforward backpropagation ANN, GN and their varients.

A Novel Eight Switches Inverter Topology For Plug-In Hybrid Electric Vehicle, Omar Hegazy, Joeri Van Mierlo

Dr. Eng. Omar Hegazy

In this paper, a novel inverter topology, Eight Switches Inverter (ESI), is proposed for HEV, especially PHEV system to reduce the number of switches, and to achieve high performance during discharging mode, braking mode and charging mode from grid. Thereby, this topology gives the ability to connect the vehicle with grid at home or at work to charge the Energy Storage System (ESS) easily, especially the battery unit. In addition, the cost and the volume of the power electronics unit (PEU) have reduced. In this research, there are two control strategies have tested to validate the performance of the proposed …

Rwanda National Customer Satisfaction Survey: Results And Conclusions, Deogratias Harorimana

Dr Deogratias Harorimana

It can be said that development practice requires more than financial and manpower inputs. Rwanda, in 1994 suffered a Genocide. The Society,collectively and under the leadership of His Excellence Paul Kagame the current elected President of Rwanda came together and designed strategies that would propel Rwanda to a Middle-Income, Private Sector Led Economy by the Year 2020.

In 2009, a client seating in one of the Hotels in a Suburb of Remera, in Kigali City, complained about poor service delivery he was experiencing from the waitress staff.Using his Blackberry message, the client forwarded an email to some of the RDB …