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28,910 Article Results

Application of Power Matrix Technique for Controlling DFIG Wind Turbine System

10.11591/ijeecs.v16.i2.pp265-271
S. Jabeer Basha , Loveswara Rao Burthi
With advance in usage of wind turbine technologies, as compared with other renewable sources the cost of wind turbine becomes competitive. Due to this economic problem, other disadvantages and by considering the global warming, the utilization of wind turbine has increased since last decade. For maintain the active power at constant, the use of Doubly-Fed Induction Generators with Energy Storage System like super capacitor (or) batteries can be used, with a two layer control scheme. This paper presents a novel concept for controlling doubly fed induction generator called power transfer matrix. This power transfer matrix technique is designed based on the instantaneous values of active and reactive power of the system. In order to protect the DFIG during fault conditions a matrix converter scheme based power/current controller is presented.
Volume: 16
Issue: 2
Page: 265-271
Publish at: 2015-11-01

Modeling of Split Ring Resonators loaded microstrip line with different orientations

10.11591/ijece.v5i6.pp1363-1371
Rajni Rajni , Gurwinder Singh , Anupma Marwaha
This paper presents the different circuit approaches of the electric and magnetic interaction of Single Split Ring Resonator (SRR) loaded microstrip line. We loaded the microstrip line with planar square split ring resonator in different configurations and orientations. The modeling behavior of metamaterials-based microstrip lines loaded with single and two-mirrored split ring resonators is analyzed numerically in two orientations (with gap of SRR parallel and perpendicular to the line). The full wave simulations are performed for the single and two-mirrored split ring resonators loaded microstrip inside a waveguide with ‘High Frequency Structure Simulator’ software. The equivalent circuit parameters are obtained for the single split ring resonator loaded with microstrip line with the gap parallel and near to the line from transmission line theory  that make use of just the resonance frequency and minimum of the reflection coefficient. The simulation of different orientations of split ring resonator gives better reflection coefficient and wider frequency.
Volume: 5
Issue: 6
Page: 1363-1371
Publish at: 2015-11-01

Sparse Representation Based Super-Resolution Algorithm using Wavelet Domain Interpolation and Nonlocal Means

10.11591/ijeecs.v16.i2.pp296-302
Gunnam Suryanarayana , Ravindra Dhuli
In this correspondence, we propose a novel image resolution enhancement algorithm based on discretewavelet transform (DWT), stationary wavelet transform (SWT) and sparse signal recovery of the inputimage. The nonlocal means filter is employed in the preliminary denoising stage of the proposed method.The denoised input low resolution (LR) image is then decomposed into different frequency subbands byemploying DWT and SWT simultaneously. In parallel, the denoised LR image is subjected to a sparse signalrepresentation based interpolation. All the estimated high frequency subbands as well as the sparseinterpolated LR image are fused to generate a high resolution (HR) image by using inverse discrete wavelettransform (IDWT). Experimental results on various test images show the superiority of our method over theconventional and state-of-the-art single image super- resolution (SR) techniques in achieving the real timeperformance.
Volume: 16
Issue: 2
Page: 296-302
Publish at: 2015-11-01

Prediction of Poor Inhabitant Number Using Least Square and Moving Average Method

10.11591/ijeecs.v16.i2.pp369-376
Ningrum Ekawati
Poor population in South Kalimantan recently shows a decreased number for the last three years, compared to few previous years. The number of poor population differs from time to time. This dynamical scaled number has actually been a problem for South Kalimantan local government to take proper policies to solve this matter.  It will then be necessary to predict potential number of poor population in the next year as the basis of subsequent policy making. This research will apply both Least Square and Moving Average methods as measurement to count prediction values. From the result, we can say that prediction analysis using those two methods is valid for predicting acquired number of potential people population based on its previous data due to its closest result to the actual condition. Reviewing the test result of last three years, the applied least square method shows validity of 92, 8%. Meanwhile, the applied moving average method shows validity of 98,8% both are considered valid.
Volume: 16
Issue: 2
Page: 369-376
Publish at: 2015-11-01

Combination of Ant Colony Optimization with Local Triangular Kernel Clustering for Vehicle Routing Problem with Time Windows

10.11591/ijeecs.v16.i2.pp355-362
Aina Musdholifah , Rahman Indra Kesuma
VRP is a common problem that occurred in logistics, including determination a route of products from the source to the destination. VRPTW is variation of VRP that use routing concepts in the serving process at the certain time interval. Recently, many methods are used to solve this optimization problem, for example ACO. LTKC-ACO was developed to improve the ACO solutions that apply LTKC to obtain a number of classes that are considered as the candidate list in ACO. Local Search is also used to avoid ACO getting stuck in the local optimum. In this study, two types of LTKC-ACO are developed that’s related to time windows parameter usage in clustering. The experimental result of 56 Solomon’s datasets showed that LTKC-ACO can improve the ACO solutions on 73,21% of datasets and can out performed then the other methods, especially on the datasets that have longer scheduling of service time.
Volume: 16
Issue: 2
Page: 355-362
Publish at: 2015-11-01

Research on the Glass Silicon Anodic Direct Bonding Parameters

10.11591/ijeecs.v16.i2.pp291-295
Jia Li , Guo Hao , Guo Zhiping , Miao Shujing
By MEMS packaging test platform for bonding process of bonding temperature and bonding time,and test silicon specifications experimental study.Firstly,according to the anodic bonding principle,the main factors to detemine the effect of bonding quality.Secodly,change the bonding temperature,bonding time,and test wafer size and other parameters,glass silicon bonding contrast test.Finally,the calculation and analysis of comparative test of each group is bonded porosity,summanrized the factors that affect the quality of the bonding and bonding to achieve the best results in the bonding conditions.Experimental results indicate that when the bonding voltage of 1200V,bonding temperature of 445-455c,bonding time is 60s,the void fractin is less than 5%.Glass and Silicon wafer bonding quality can achieve the best. The experimental results in order to improve the glass silicon bonding quaity provides the basis.
Volume: 16
Issue: 2
Page: 291-295
Publish at: 2015-11-01

Performance Analysis of Various Phases of SRM with Classical and New Compact Converter

10.11591/ijeecs.v16.i2.pp256-264
S.M. Mohamed Saleem , L. Senthil Murugan
In recent years, considerable attention has been given to find the compact and low cost power converter topology for Switched Reluctance Motor (SRM) drive to meet the emerging applications such as plotters, fans, pumps, screw rotary compressor drives, high speed application drives above 30,000 RPM. This paper is concerned with such as attempt to formulate a new compact power converter for SRM drive. The proposed power converter has reduced number of power electronic components which makes the converter compact and also reduce the switching losses. The power factor plays a vital issue in the usage of power electronic converters. The power boost converter and PI controller. A Simulink system is developed for 3Φ SRM by using MATLAB software. The proposed converter performance is compared with the classical converter and analysis results are presented.
Volume: 16
Issue: 2
Page: 256-264
Publish at: 2015-11-01

Sufficient Authentication for Energy Consumption in Wireless Sensor Networks

10.11591/ijeecs.v16.i2.pp316-322
SK. Riaz , V. Srirammanoj
Given the understanding of the prospective WSN programs and because of source restrictions, key management emerges as a complicated problem for WSNs. One of the main issues when developing a key management scheme is the system scalability. Indeed, the method should assistance a huge number of nodes to allow a large range implementation of the system. In this paper we implemented a performance trade-off research of power intake vs. We urbanized a novel probability style to evaluate the best redundancy stage in terms of direction redundancy (mp) and resource redundancy (ms), as well as the best attack identification configurations with regards to the number of voters (m) and the attack incantation interval under which the life-time of a heterogeneous wireless sensor network is optimized while fulfilling the stability, timeliness and protection specifications of question processing applications in the existence of untrustworthy wireless communication and harmful nodes. Lastly, we used our analysis outcomes to the style of powerful redundancy management criteria to recognize and implement the best design parameter configurations at playback in reaction to environment changes to extend the program life-time.
Volume: 16
Issue: 2
Page: 316-322
Publish at: 2015-11-01

The Effect of Deposition Rate on the Electrical Properties of Indium Tin Oxide (ITO) Thin Films

10.11591/ijeecs.v16.i2.pp286-290
Hadaate Ullah , Shahin Mahmud , Fahmida Sharmin Jui
Indium-tin oxide (ITO) which is optically transparent is referred as a “universal” electrode for various optoelectronic devices such as organic light emitting diodes (OLEDs). It is scientifically proved that the performance of OLEDs raises up significantly by exposing the ITO surface to oxygen plasma. This study employs conducting atomic force microscopy (C-AFM) for unique nanometer-scale mapping of the local current density of a vapor-deposited ITO film. Indium Tin Oxide (ITO) thin films have been prepared by using the reactive evaporation method on glass substrates in an oxygen atmosphere. It is found that the deposition rate plays a vital role in controlling the electrical properties of the ITO thin films. The resistivity and the electrical conductivity were also investigated. The electrical resistivity of 3.10 x10 –6 Ωm has been obtained with a deposition rate of 2 nm/min.
Volume: 16
Issue: 2
Page: 286-290
Publish at: 2015-11-01

A Bandwidth Degradation Technique to Reduce Call Dropping Probability in Mobile Network Systems

10.11591/ijeecs.v16.i2.pp303-307
CH. Monica , K.V.L. Bhavani
A generic video telephony may require more than 40 kbps whereas a low motion video telephony may require about 25 kbps for data transmission. From the designing point of view these requirements demands for an alternative resource planning, especially for bandwidth allocation in wireless networks. In wireless network where bandwidth is a scare resource, the system may need to block incoming user if all of the bandwidth has been used to provide highest quality of service to existing users. However this bandwidth resource planning may be unacceptable for larger application. This work aims towards a realization of a mobile network using W-CDMA multi access technique supporting multilevel quality of services. The bandwidth allocation to multiple users is adjusted dynamically according to the required network condition so as to increase bandwidth utilization. The work analyzes the performance deriving the degradation period ratio, mean degradation time and degradation state for the implemented wireless network. The proposed work is aim to implement on Matlab tool for its functional verification considering various mobility patterns.
Volume: 16
Issue: 2
Page: 303-307
Publish at: 2015-11-01

Effects of Parameters Variation in Fuzzy based Induction Motor Drives

10.11591/ijeecs.v16.i2.pp272-280
Marizan Sulaiman , Zulhisyam Salleh , Rosli Omar
This paper presents the effects of parameters variation over the speed response of vector controlled induction motor drives for high performance applications. The design and simulation of fuzzy logic controller are considered based on design case constant parameter fuzzy logic (DCCPFL) controller. The scaling factors for DCCPFL controller are calculated based on identified motor parameter. The performance of the DCCPFL is compared with conventional PI controller. Three different parameters is tested under no-load and loaded conditions namely rotor resistance, inertia and self-inductance. From the simulation results, it is proved that the DCCPFL have better performance in term of different parameter variations and also load disturbances. Thus the DCCPFL is appropriate to replace the conventional PI for high performance of induction motor drives system.
Volume: 16
Issue: 2
Page: 272-280
Publish at: 2015-11-01

Study of Hybrid PV-Wind Energy System to Isolated Micro-grid

10.11591/ijeecs.v16.i2.pp221-231
Samir M. Dawoud , Xiangning Lin
The optimal sizing of the isolated hybrid microgrid using an optimization technique was proposed. The hybrid system features WT, PV and conversion systems were used to feed the electrical load demand. A HOMER software was used to model system performance during a time of one year, considering Sensitivity variations in both the availability of renewable energy sources and variations in the load demand. The optimal solution was obtained with respect to decrease the cost of energy (COE) and the loss of power supply probability (LPSP) over a project lifetime of 25 years to improve the isolated operation of the microgrid. The aim of this study is to investigate an optimum combination of different energy systems which can supply electricity to a rural area in Egypt. The results show the COE for the optimal model was found 0.139 $/kWh which is less than half of the PV or WT system.
Volume: 16
Issue: 2
Page: 221-231
Publish at: 2015-11-01

Range-Free Localization Schemes for Wireless Sensor Networks

10.11591/ijeecs.v16.i2.pp323-332
R. Khadim , M. Erritali , A. Maaden
Localization of nodes is one of the key issues of wireless sensor network (WSN) that gained a wide attention in recent years. The existing localization techniques can be generally categorized into two types: range-based and range-free. Compared with rang-based schemes, the range-free schemes are more cost-effective, because no additional ranging devices are needed. As a result, we focus our research on the range-free schemes. In this paper we study three types of range-free location algorithms to compare the localization error and energy consumption of each one. Centroid algorithm requires a normal node has at least three neighbor anchors, while DV-hop algorithm doesn’t have this requirement. The third studied algorithm is the amorphous algorithm similar to DV-Hop algorithm, and the idea is to calculate the hop distance between two nodes instead of the linear distance between them .The simulation results show that the localization accuracy of the amorphous algorithm is higher than that of other algorithms and the energy consumption does not increase too much.
Volume: 16
Issue: 2
Page: 323-332
Publish at: 2015-11-01

SecureDBaaS Model for Accessing Encrypted Cloud Databases

10.11591/ijeecs.v16.i2.pp333-340
Palle Jagadeeswaraiah , M.R. Pavan Kumar
Cloud computing has recently emerged being a compelling paradigm that pertains to managing and delivering services over the web. The particular prevalent problem connected with cloud is confidentiality, security, as well as reliability etc., in which how the cloud provider assures. To recognize this, a novel architecture is usually introduced that will integrates cloud database services and as well executing concurrent operations on encrypted information. Also a new homomorphic encryption algorithm will likely be incorporated to offer confidentiality as well as concurrent execution of various SQL operations. This will be the first option supporting quite a few distributed clienteles to access encrypted cloud databases. One of main thing is that it eliminates advanced proxies in between cloud user and provider.The performance on the architecture is usually calculated by means of theoretical and practical results which are subjected to TPC-C benchmark standard tools for a number of clients as well as network latencies.
Volume: 16
Issue: 2
Page: 333-340
Publish at: 2015-11-01

Machine Learning Based Automotive Forensic Analysis for Mobile Applications Using Data Mining

10.11591/ijeecs.v16.i2.pp350-354
MD. Hussain Khan , G. Pradeepini
Phone is a device which provides communication between the people through voice, text, video etc. Now a day’s people may leave without food but not without using phones. No of operating systems are working with various versions and various security issues are working. Security is very important task in Mobiles and mobile apps. To improve the security status of mobiles, existing methodology is using cloud computing and data mining. Out traditional method is named as MobSafe to identify the mobile apps antagonism or graciousness. In the proposed system, we adopt Android Security Evaluation Framework (ASEF) and Static Android Analysis Framework (SAAF).In this paper, our proposed system works on machine learning to conduct automotive forensic analysis of mobile apps based on the generated multifaceted data in this stage.
Volume: 16
Issue: 2
Page: 350-354
Publish at: 2015-11-01
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