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25,002 Article Results

Generation & Analysis of Harmonic for Various Combinations of Non-linear Load

10.11591/ijeecs.v12.i10.pp7249-7252
Subhabrata Mukherjee , Kunal Chakraborty , Dipak Kumar Datta
This paper refers to a comparative study of the harmonics generated by non-linear loads like compact fluorescent lamps (CFL). This work is carried out by measuring the frequency across the supply line by using CFL along with a resistive load. Here CF lamps are used as they are non-linear loads and generate frequencies of very high value. We have used three cfl lamps of different ratings such as 5, 14t and 20watt.
Volume: 12
Issue: 10
Page: 7249-7252
Publish at: 2014-10-01

Voltage Flicker Mitigation in Electric Arc Furnace using D-STATCOM

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5055
Deepthisree Madathil , Ilango Karuppasamy , Kirthika Devi V S , Manjula G Nair
The major power quality issue of voltage flicker has resulted as a serious concern for the customers and heavy power companies. Voltage flicker is an impression of unsteadiness of visual sensation induced by a light source whose luminance fluctuates with time. This phenomenon is experienced when an Electric Arc Furnace (EAF) as load is connected to the power system. Flexible AC transmission devices (FACTS) devices were gradually utilized for voltage flicker reduction. In this paper the FACTS device of Distribution Static Synchronous Compensator (D-STATCOM) is used to serve the purpose of mitigating voltage flickering caused by electric arc furnace load, which is efficiently controlled by Icosɸ control algorithm. The model of electric arc furnace is considered as a current source controlled by a non linear resistance, which had been simulated and performance was analyzed using MATLAB/SIMULINK Software.DOI: http://dx.doi.org/10.11591/ijpeds.v5i2.6242
Volume: 5
Issue: 2
Page: 211-218
Publish at: 2014-10-01

A Fault Detection Mechanism Based on Artificial Neural Network Distributed in Tunnel

10.11591/ijeecs.v12.i10.pp7337-7342
Liu Liu , Ma Chengqian
This paper has made a qualitative and quantitative analysis by establishing the tunnel fault tree and giving the minimal cut sets of the faults in tunnel, and tested the data in tunnel combined with artificial neural network. The fault detection mechanism in this article has been simulated by MatLab and processed a lot of the actual data through the tunnel operating history. Experimental results show that: This fault detection mechanism is effective.
Volume: 12
Issue: 10
Page: 7337-7342
Publish at: 2014-10-01

Research and Realization of Wireless Sensor Networks Database

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/3895
Ping Liu
As the core application of wireless sensor network technology, Data management and processing have become the research hotspot in the new database. This article studied mainly data management in wireless sensor networks, in connection with the characteristics of the data in wireless sensor networks, discussed wireless sensor network data query, integrating technology in-depth, proposed a mobile database structure based on wireless sensor network and carried out overall design and implementation for the data management system. http://dx.doi.org/10.11591/telkomnika.v12i10.5469 
Volume: 12
Issue: 10
Page: 7438-7444
Publish at: 2014-10-01

Satellite Image Denoising Using Local Spayed and Optimized Center Pixel Weights

https://ijece.iaescore.com/index.php/IJECE/article/view/5533
Pala Mahesh Kumar
Now a day’s digital image processing applications are widely used in various fields such as medical, military, satellite, remote sensing and even web applications also. In any application image denoising is a challenging task because noise removal will increase the digital quality of an image and will improve the perceptual visual quality. In this paper we proposed a new method “local spayed and optimized center pixel weights (LSOCPW) with non local means” to improve the denoising performance of digital color image sequences. Simulation results show that the proposed method has given the better performance when compared to the existing algorithms in terms of peak signal to noise ratio (PSNR) and mean square error (MSE).DOI:http://dx.doi.org/10.11591/ijece.v4i5.6624
Volume: 4
Issue: 5
Page: 751-757
Publish at: 2014-10-01

Theoretical Modeling of a Magnetic Loop Antenna for Ultra wide band Application

10.11591/ijeecs.v12.i10.pp7076-7081
Moses Emetere
The functionality of an improved magnetic loop antenna (MLA) is a prominent research which has span almost three decades. Its shape and size had metaphorsize from the usual analogue to a digital device-which is now used for experiments in space. In this paper, the application of MLA for ultra wide band (UWB) design was proposed. A new concept was introduced -angular displacement theory which was used to mitigate fading in multipath propagation
Volume: 12
Issue: 10
Page: 7076-7081
Publish at: 2014-10-01

A performance comparison of DFIG using power transfer matrix and direct power control techniques

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5051
K. Viswanadha S Murthy , M. Kirankumar , G.R.K. Murthy
This paper presents a direct power control and power transfer matrix model for a doubly-fed induction generator (DFIG) wind energy system (WES). Control of DFIG wind turbine system is traditionally based on either stator-flux-oriented or stator-voltage-oriented vector control. The performance of Direct Power Control (DPC) and Power transfer Matrix control for the same wind speed are studied. The Power transfer matrix Control gave better results. The validity and performance of the proposed modelling and control approaches are investigated using a study system consisting of a grid connected DFIG WES. The performance of DFIG with Power Transfer Matrix and Direct Power Control (DPC) techniques are obtained through simulation. The time domain simulation of the study system using MATLAB Simulink is carried out. The results obtained in the two cases are comparedDOI: http://dx.doi.org/10.11591/ijpeds.v5i2.6150
Volume: 5
Issue: 2
Page: 176-184
Publish at: 2014-10-01

Template Matching Method for Recognition of Stone Inscripted Kannada Characters of Different Time Frames Based on Correlation Analysis

https://ijece.iaescore.com/index.php/IJECE/article/view/5522
Rajithkumar B K , H.S. Mohana
Stone inscripted literature speaks about the history, language of different regions of the world. Preservation of such document through digitalization process is become very important. To stop degradation and missing further, the analysis of the same will through light on historical events of that region. In this connection present work proposes a simple method of digitization using ordinary digital camera further, the pre-processing algorithm is implemented to enhance the image and improve the readability. Here it recognizes the Kannada characters based on template matching. In this method is normally implemented by first picking template and then it  call the search image, then by simply comparing the  template over each point in the search image and it calculate the sum of products between the coefficient. Based on this calculated product value it recognizes the character.  Cross correlation technique is implemented in matching the characters coefficient. Experimental results shows, it demonstrates relatively high accuracy in recognizing Stone inscriptions characters of both Hoysala, Ganga time frames and with better time efficiency when compared to previous methods. DOI:http://dx.doi.org/10.11591/ijece.v4i5.6333
Volume: 4
Issue: 5
Page: 719-729
Publish at: 2014-10-01

Implementation of Optical OFDM Based System for Optical Networks

https://ijece.iaescore.com/index.php/IJECE/article/view/5538
B U Rindhe , Jyothi Digge , S K Narayankhedkar
Orthogonal frequency division multiplexing (OFDM), a frequency division multiplexing scheme utilized as a digital multi-carrier modulation technique, implemented using optical fiber link for practical applications thereby developing optical OFDM using OptSim simulation. OFDM has many advantages over other modulation techniques such as a high resistance to inter-symbol interference (ISI) and it is robust against fading caused by multipath propaga­tion. Optical fiber cable (OFC) as a transmission media is used for distortion less transmission of data at a very higher data speed. OFC cable has a lot of advantages over other media. And OFDM over OFC cable will provide data speeds at a very high speed and with very less losses. In this work opti­cal transmitter and receiver for OFDM based optical network has designed for high speed data transmission over optical fiber. While modeling the sys­tem we have also used post,,pre and symmetric compensation technique to reconfigure the bandwidth along with add drop multiplexer,tunable filters and optical amplifiers to achieve high performance with minimum distortion and low bit error rate (BER).DOI:http://dx.doi.org/10.11591/ijece.v4i5.5261
Volume: 4
Issue: 5
Page: 767-781
Publish at: 2014-10-01

Issues and Challenges in Advertising on the Web

https://ijece.iaescore.com/index.php/IJECE/article/view/5549
Deepthi Gurram , B. Vijaya Babu , Vidyullatha Pellakuri
One of the big surprises of the 21st century has been the ability of all sorts of interesting Web applications to support themselves through advertising, rather than subscription. While radio and television have managed to use advertising as their primary revenue source, most media – newspapers and magazines, for example – have had to use a hybrid approach, combining revenue from advertising and subscriptions.  A venue for on-line advertising has been search, and much of the effectiveness of search advertising came from the “adwords” model of matching search queries to advertisements. This paper presents the algorithms for optimizing the way of matching search queries to advertisements is done. The algorithms discussed are of unusual type; they are greedy and they are on-line which are used to tackle the adwords problem.DOI:http://dx.doi.org/10.11591/ijece.v4i5.6626
Volume: 4
Issue: 5
Page: 810-816
Publish at: 2014-10-01

Design and Analysis Gires-Tournois-Interferometer Mirrors

10.11591/ijeecs.v12.i10.pp7209-7213
Amer B.Dheyab , Gaillan H. Abdullah , Haider Y. Hammod , Ali Hassan
We report the implementation and operation of GTI with high-reflectivity negative-dispersion dielectric mirrors for use in tunable ultrafast laser systems. The mirror structure is divided into two distinct regions: an underlying high-reflectivity dielectric quarter-wavelength stack and an overlying negative-dispersion section consisting of only a few layers and forming simple multiple Gires–Tournois interferometers. The example that we present was designed two structures with different spacers for operation from 670-860 nmand680-840nm has a near-constant group-delay dispersion of ±3000fs2and a peak reflectivity greater than 98%. We can usingand application of these mirrors in a mode-locked Ti: Sapphire laser.
Volume: 12
Issue: 10
Page: 7209-7213
Publish at: 2014-10-01

A New Fusion Tracking Method with Unknown Noise

10.11591/ijeecs.v12.i10.pp7262-7273
Sun Tao , Qin Lu-Fang , Li Wei , Li Jun , Cao Jie
In order to sovle the problem of video target tracking problem, this paper proposed a new kind of particle filter with unknown statistical characteristics of noises. This paper derivates the distribution function of statistical properties in detailed with correlative noise by the establishment model of related noise, and gives the real-time estimation equation of the noise statistical characteristics and the system state. The new algorithm reduced the estimation error effectively and improved the anti-noise ability of the system. Under the improving particle filter framework, we used color and motion edge character as observation model and fused multi features weights through the D-S evidence theory. The experimental results showed that the method proposed in this paper has high precision and strong robustness to target tracking under the complicated conditions.
Volume: 12
Issue: 10
Page: 7262-7273
Publish at: 2014-10-01

Photovoltaic Cell Fed 3-Phase Induction Motor Using MPPT Technique

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5054
Gudimetla Ramesh , Kari Vasavi , S.Lakshmi Sirisha
This Paper emphasizes on proposing a cost effective photovoltaic (PV) fed 3 phase Induction motor drive which serves for rural pumping applications. Generally in a standalone system, the PV unit will charge the battery and the battery set up in turn will serve as a source for the inverter. A new single stage battery less power conversion is employed by designing a maximum power point tracker (MPPT) embedded boost converter which makes the overall cost of the setup to go down considerably. The realized as a prototype consisting PV array of 500watts, MPPT aided boost converter, three phase inverter and a three phase squirrel cage induction drive of 300 watts. An efficient and low cost micro controller dspic4011 is used a platform to code and implement the prominent perturb and observe MPPT technique .Sinusoidal pulse width modulation (SPWM) is the  control technique employed for  the three phase  inverter. To validate the experimental results simulation of the whole set up is carried out in matlab /simulink environment. Simulation and hardware results reveal that the system is versatile.DOI: http://dx.doi.org/10.11591/ijpeds.v5i2.6209
Volume: 5
Issue: 2
Page: 203-210
Publish at: 2014-10-01

A π-CLCL Type Immittance Converter for Constant Current and Dynamic Load Applications

https://ijece.iaescore.com/index.php/IJECE/article/view/5511
M. Abdur Razzak , Sumaiya B. Afzal , Meeyad M. Shabab
Impedance-admittance converter is shortly termed as immittance converter. In this converter, the output current is proportional to the input voltage and the output voltage is proportional to the input current. The output current is thus independent of the load. This research evaluates the characteristics of a proposed π-CLCL immittance converter, which is a combination of the typical π- and T-type configurations, for constant current and dynamic load applications. The input-output characteristics and efficiency characteristics are analyzed and simulated. The characteristics are compared to that of the typical π- and T-type converters. The input-output characteristics and efficiency characteristics are then examined experimentally. It is observed that the experimental results agree with those of the simulation ones, and confirm that the π-CLCL configuration is more efficient than the typical π- and T-type immittance converters while maintaining a nearly constant output current and thus applicable for dynamic loads.DOI:http://dx.doi.org/10.11591/ijece.v4i5.5957
Volume: 4
Issue: 5
Page: 679-690
Publish at: 2014-10-01

Active and Reactive Power Control of a Doubly Fed Induction Generator

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5059
Zerzouri Nora , Labar Hocine
Wind turbine WT occupies gradually a large part in world energy market, Doubly fed induction generator DFIG is mostly used in WT, it allow highly flexible active and reactive power generation control. This paper presents dynamic modeling and simulation of a doubly fed induction generator based on grid-side and rotor-side converter control. The DFIG, grid-side converter, rotor-side converter, and its controllers are performed in MATLAB/Simulink software. Dynamic response in grid connected mode for variable speed wind operation is investigated. Simulation results on a 3 MW DFIG system are provided to demonstrate the effectiveness of the proposed control strategy during variations of active and reactive power, rotor speed, and converter dc link voltage.DOI: http://dx.doi.org/10.11591/ijpeds.v5i2.6477
Volume: 5
Issue: 2
Page: 244-251
Publish at: 2014-10-01
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