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25,002 Article Results

Solar Photovoltaic Powered Sailing Boat Using Buck Converter

10.11591/ijpeds.v6.i1.pp129-136
Soumya Das , Pradip Kumar Sadhu , Nitai Pal , Gourav Majumdar , Saswata Mukherjee
The main objective of this paper is to establish technical and economical aspects of the application of stand-alone photovoltaic (PV) system in sailing boat using a buck converter in order to enhance the power generation and also to minimize the cost. Performance and control of dc-dc converter, suitable for photovoltaic (PV) applications, is presented here. A buck converter is employed here which extracts complete power from the PV source and feeds into the dc load. The power, which is fed into the load, is sufficient to drive a boat . With the help of matlab simulink software PV module and buck model has been designed and simulated and also compared with theoretical predictions.
Volume: 6
Issue: 1
Page: 129-136
Publish at: 2015-03-01

Multiphase Transformer Modelling using Finite Element Method

10.11591/ijpeds.v6.i1.pp56-64
Nor Azizah Mohd Yusoff , Kasrul Abdul Karim , Sharin Ab Ghani , Tole Sutikno , Auzani Jidin
In the year of 1970 saw the starting invention of the five-phase motor as the milestone in advanced electric motor. Through the years, there are many researchers, which passionately worked towards developing for multiphase drive system. They developed a static transformation system to obtain a multiphase supply from the available three-phase supply. This idea gives an influence for further development in electric machines as an example; an efficient solution for bulk power transfer. This paper highlighted the detail descriptions that lead to five-phase supply with fixed voltage and frequency by using Finite-Element Method (FEM). Identifying of specification on a real transformer had been done before applied into software modeling. Therefore, Finite-Element Method provides clearly understandable in terms of visualize the geometry modeling, connection scheme and output waveform.
Volume: 6
Issue: 1
Page: 56-64
Publish at: 2015-03-01

Corroboration of Normalized Least Mean Square Based Adaptive Selective Current Harmonic Elimination in Voltage Source Inverter using DSP Processor

10.11591/ijpeds.v6.i1.pp178-184
P. Avirajamanjula , P. Palanivel
A direct Selective current harmonic elimination pulse width modulation technique is proposed for induction motor drive fed from voltage source inverter. The developed adaptive filtering algorithm for the selective current harmonic elimination in a three phase Voltage Source Inverter is a direct method to improve the line current quality of the Voltage Source Inverter base drive at any load condition. The self-adaptive algorithm employed has the capability of managing the time varying nature of load (current). The proposed Normalized Least Mean Squares algorithm based scheme eliminates the selected dominant harmonics in load current using only the knowledge of the frequencies to be eliminated. The algorithm is simulated using Matlab/Simulink tool for a three-phase Voltage Source Inverter to eliminate the fifth and seventh harmonics. The system performance is analyzed based on the simulation results considering total harmonic distortion, magnitude of eliminated harmonics and harmonic spectrum. The corroboration is done in the designed Voltage Source Inverter feeding induction motor using digital signal processor-TMS320L2812.The developed algorithm is transferred to digital signal processor using VisSimTM software.
Volume: 6
Issue: 1
Page: 178-184
Publish at: 2015-03-01

Feature extraction and classification for multiple species of Gyrodactylus ectoparasite

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/4231
Rozniza Ali , Amir Hussain , Mustafa Man
Active Shape Models (ASM) are applied to the attachment hooks of several species of Gyrodactylus, including the notifiable pathogen G. salaris, to assign each species to its truespecies type. Linear (i.e. LDA and K-NN) andnon-linear (i.e. MLP and SVM) models are used to classify Gyrodactylus species. Speciesof Gyrodactylus, ectoparasitic monogenetic flukes of fish, are difficult to discriminate andidentify according to morphology alone and their speciation currently requires taxonomicexpertise. The current exercise sets out to confidently classify species, which in this example includes a species which is a notifiable pathogen of Atlantic salmon, to their true classwith a high degree of accuracy. The findings from the current exercise demonstrates thatimport of ASM data into a MLP classifier, outperforms several other methods of classification (i.e. LDA, K-NN and SVM) that were assessed, with an average classification accuracyof 98.72%. DOI: http://dx.doi.org/10.11591/telkomnika.v13i3.7096
Volume: 13
Issue: 3
Page: 503-511
Publish at: 2015-03-01

Comparison of Estimated Torques Using Low Pass Filter and Extended Kalman Filter for Induction Motor Drives

10.11591/ijpeds.v6.i1.pp92-99
Ibrahim Mohd Alsofyani , Nik Rumzi Nik Idris , Yahya A. Alamri , Tole Sutikno , Aree Wangsupphaphol , Norjulia M. Nordin
Torque calculation process is one of the major concerns for controlling induction motors in industry, which requires very accurate state estimation of unmeasurable variables of nonlinear models. This can be solved if the variables used for torque calculation is accurately estimated.  This paper presents a torque calculation based on a voltage model represented with a low-pass filter (LPF), and an extended Kalman filter (EKF). The experimental results showed that the estimated torque at low speed based on EKF is more accurate in the expense of more complicated and larger computational time.
Volume: 6
Issue: 1
Page: 92-99
Publish at: 2015-03-01

Reliability and Availability Analysis of Arepairable System With Two Types of Failure

10.11591/ijaas.v4.i1.pp39-44
M. A. El-Damcese , M. S. Shama
This paper investigates reliability and availability of a repairable system with two types of failure. Let failure rate and repair rate of [type1, type2] components are assumed to be exponentially distributed. The expressions of availability and reliability characteristics such as the system reliability and the mean time to failure are derived. We used several cases to analyze graphically the effect of various system parameters on the reliability system and availability system.
Volume: 4
Issue: 1
Page: 39-44
Publish at: 2015-03-01

Design and Experimental Verification of Linear Switched Reluctance Motor with Skewed Poles

10.11591/ijpeds.v6.i1.pp18-25
Lenin N C , Arumugam R
This paper presents the realization and design of a linear switched reluctance motor (LSRM) with a new stator structure. One of the setbacks in the LSRM family is the presence of high force ripple leads to vibration and acoustic noise. The proposed structure provides a smooth force profile with reduced force ripple. Finite element analysis (FEA) is used to predict the force and other relevant parameters.A frequency spectrum analysis of the force profile using the fast Fourier transform (FFT) is presented.The FEA and experimental results of this paper prove that LSRMs are one of the strong candidates for linear propulsion drives.
Volume: 6
Issue: 1
Page: 18-25
Publish at: 2015-03-01

Implementation of Sustainable Development Concept in Hotel A Surabaya

10.11591/ijaas.v4.i1.pp1-5
Nuke Puspawardani , Kresno Eka Mukti , Angsar Nur Himawan , Happy Ratna Sentosa
Hospitality is one of the important sectors in the growth of the Indonesian Economy, which it continues to increase each year. But on the other hand it also has a negative impact. The higher use of the hotel, the higher the resource and energy expended to serve the guests of the hotel. This study aims to determine the implementation of sustainable development concept of Hotel A in Surabaya. This hotel is under auspices of the Accor Group, one of international hotel management groups, which already implemented the concept of sustainable development. To achieve the objectives of the study, the researcher using qualitative analysis techniques to process the primary and secondary data obtained, to find the answer on how far the application of sustainable development at the Hotel A. The research results show that Hotel A has conducted various measures to support sustainable development in several aspects. But they just apply 3 of 7 pillars of ecology as envisioned by the Accor Group. This study shows the aspects of eco-friendly management that can be carried out by a hotel. 
Volume: 4
Issue: 1
Page: 1-5
Publish at: 2015-03-01

Intelligent Framework for Web-Service Testing

10.11591/ijaas.v4.i1.pp32-38
L S RajivKrishna , Y Prasanth
Web services provides a distributed computing architecture, with an emerging way of service oriented architecture (SQA). Here service oriented architecture is an interface to both computer systems and web services. Which implements an interaction with each other in new and different ways. According to service oriented architecture it virtually provides a platform for web services to communicate with each other. As it was an easy way for communicating with both clients and services. Many organizations and companies are either evaluating themselves into an enterprise information architectures, or they are in the process of getting adopt to the web services technology. As web services are platform independent it is playing a major role in the enterprise environment, and currently web services are widely accepted by many companies and organizations. So commonly web services possess some challenges to the enterprise environment. As a part of it web service must be tested before publish into a service oriented architecture. It involves large number of test cases, test scenarios that takes more time and effort. Testing management is needed so that it should control the time effort and should reduce the complexity of web service in a large software system, also in a real time world. Automation testing faces these challenges and fixes these issues. Automation testing has an ability to handle the complexities which are experiencing by the web services in a current environment. This paper presents the automatic testing strategies of a web service and detect the problems between both manual and automation testing. Finally results shows the proper effective report on improving the visibility of testing process based on the web approach to enhance the critical communication among multiple testing groups.
Volume: 4
Issue: 1
Page: 32-38
Publish at: 2015-03-01

An Enhanced Lossless Color Filter Array Image Compression Based On Predictive Adaptive Arithmetic Coding

10.11591/ijaas.v4.i1.pp24-31
L.M. Varalakshmi , R. Sowmiya
Most consumer digital cameras use a single image light sensor which provides color information using color filter array(CFA).This  provided a mosaic images, in which each pixel position contains only one color component in case of Bayer CFA Pattern. This paper produced a CFA hierarchical prediction scheme based on context adaptive coding. In CFA hierarchical scheme, the green pixels were subdivided into two sets .  was encoded by a gray scale conventional method and  was  predicted based on . The red pixels were predicted using both the sets of green pixels and blue pixels were predicted using red and green. The predictors were designed based on direction of the edges in the neighborhood. Using the prediction information, the magnitude of prediction error was also determined and context adaptive arithmetic coding was applied to reduce bits. The simulated results on CFA images showed that the proposed method gives less bits per pixel than the recently developed CFA compression algorithms.
Volume: 4
Issue: 1
Page: 24-31
Publish at: 2015-03-01

Financial Feasibility Study of Waste Cooking Oil Utilization for Biodiesel Production Using ANFIS

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/4236
Imam Ahmad , Irman Hermadi , Yandra Arkeman
Consumption of fuel oil is increasing, but it is not accompanied by supply. Transportation sector is spent the most existing fuel. Therefore, it is crucial to look for alternative type of fuel such as biodiesel to overcome the fuel shortage. The purpose of this study is to investigate the feasibility on how the investment of waste cooking oil as the biodiesel material production. This study consists of two phases. First is calculating feasibility fuzzy model with the input price of biodiesel, waste cooking oil prices and interest rates, and as its output are Net Present Value (NPV), Internal Rate of Return (IRR), Net Benefit Cost Ratio (Net B/C) and Payback Period (PBP). Second is predicting the feasibility of using Adaptive Neuro Fuzzy Inference System (ANFIS). The results of the analysis for each type of membership function (mf) were obtained triangular accuracy 77%, accuracy gaussian 53% and trapezoidal accuracy 61%. DOI: http://dx.doi.org/10.11591/telkomnika.v13i3.7122
Volume: 13
Issue: 3
Page: 546-554
Publish at: 2015-03-01

Platform-as-a-Service (PaaS): Model and Security Issues

10.11591/ijaas.v4.i1.pp13-23
Devi T , Ganesan R
Cloud computing is making a big revolution in the field of information technology thereby reducing capital expenditures spent. Computing is delivered as a service enabling effective utilization of computational resources. Certain security issues exist which prevents individuals and industries from using clouds despite its advantages. Resolving such problems may increase the usage of cloud thereby reducing the amount spent for resources. The paper focuses on one of the three service delivery models, Platform-as-a-Service(PaaS). PaaS model, layers in PaaS and PaaS providers are described along with the security issues encountered in PaaS clouds. The issues along with solutions discussed provide an insight into PaaS security for both providers and users which may help in future PaaS design and implementation.
Volume: 4
Issue: 1
Page: 13-23
Publish at: 2015-03-01

Selection of Power Semiconductor Switches in Modified Half Bridge Resonant Inverter Fitted Induction Heater in Power Line for Less Harmonic Injection

10.11591/ijpeds.v6.i1.pp121-128
Pradip Kumar Sadhu , Palash Pal , Nitai Pal , Sourish Sanyal
This paper presents an approach to minimize the harmonics contained in the input current of single phase Modified Half Bridge Resonant inverter fitted induction heating equipment. A switch like IGBT, GTO, and MOSFET are used for this purpose. It analyzes the harmonics or noise content in the sinusoidal input current of this inverter. Fourier Transform has been used to distinguish between the fundamental and the harmonics, as it is a better investigative tool for an unknown signal in the frequency domain. An exhaustive method for the selection of different power semiconductor switches for Modified Half Bridge Resonant inverter fed induction heater is presented. Heating coil of the induction heater is made of litz wire which reduces the skin effect and proximity effect at high operating frequency. With the calculated optimum values of input current of the system at a particular operating frequency, Modified Half Bridge Resonant inverter topology has been simulated using P-SIM software. To obtain the Input current waveforms through it, further analysis has been employed. From this analysis selection of suitable power semiconductor switches like IGBT, GTO and MOSFET are made. Waveforms have been shown to justify the feasibility for real implementation of single phase Modified Half Bridge Resonant inverter fed induction heater in industrial application.
Volume: 6
Issue: 1
Page: 121-128
Publish at: 2015-03-01

An Integrated Approach for Compendium Generator using Customized Algorithms

10.11591/ijaas.v4.i1.pp6-12
M. Suman , Tharun Maddu , M. Mohan
Text Summarization is a process that is to give the shorter version of a text document. For many research scholars who want to do their research on a specific domain has to search a lot of documents on that topic related to a specific domain. It is also difficult to go through the lot of the research papers present  in that particular domain which takes a lot of time at this moment of time there are  lots of chances in missing some key words present in those research papers.  So that Summarizer is used to give the summary of a paper. The aim of our project is to reduce the body of the text and maintaining coherence and avoiding redundancy. Winnowing is an algorithm that gives the coherence between the multiple papers when multiple papers are given as the input. Redundancy that is the repeated words or sentences can be avoided using the MMR algorithm.
Volume: 4
Issue: 1
Page: 6-12
Publish at: 2015-03-01

Modeling Singular Value Decomposition and K-Means of Core Image in Clasification of Potential Nickel

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/4238
Agung Prajuhana Putra , Agus Buono , Bib Paruhum Silalahi
Exploration is a main process in the nickel mining activities. One of the most important steps in exploration is obtain soil samples (cores) to determine the potential of nickel in the soil. Laboratory testing is a way to know how much the nickel content on the core. This research aims to utilize the core image of the statistical characteristics of color and texture, Biplot analysis using SVD, K-Means and identification using SVM method with RBF kernel and polynomial to determine the potential of nickel.DOI: http://dx.doi.org/10.11591/telkomnika.v13i3.7197
Volume: 13
Issue: 3
Page: 561-567
Publish at: 2015-03-01
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