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29,922 Article Results

Photovoltaic emulator of different solar array configurations under partial shading conditions using damping injection controller

10.11591/ijpeds.v11.i2.pp1019-1030
Mustapha Alaoui , Hattab Maker , Azeddine Mouhsen , Hicham Hihi
In the last decades, researchers and scientists have been trending towards photovoltaic (PV) solar energy research as one of the noteworthy renewable energies. As a matter of fact, the need for a laboratory system devoted to performing measurements and experimentation on PV systems is being increased. The PV array emulator is designed to accomplish this task by reproducing accurately the electrical behavior of real PV sources. The present paper proposes thus a new control and design of PV array emulators. It is based essentially on a hybrid Damping Injection controller. The proposed control strategy circumvents obviously the existing PV emulator's limitations in terms of accuracy, speed and partial shading emulation. Several results are given and discussed to show the efficiency of the proposed system to emulate PV modules and different PV array configurations under uniform solar irradiance and partial shading conditions.
Volume: 11
Issue: 2
Page: 1019-1030
Publish at: 2020-06-01

Botnet detection using ensemble classifiers of network flow

10.11591/ijece.v10i3.pp2543-2550
Zahraa M. Algelal , Eman Abdulaziz Ghani Aldhaher , Dalia N. Abdul-Wadood , Radhwan Hussein Abdulzhraa Al-Sagheer
Recently, Botnets have become a common tool for implementing and transferring various malicious codes over the Internet. These codes can be used to execute many malicious activities including DDOS attack, send spam, click fraud, and steal data. Therefore, it is necessary to use Modern technologies to reduce this phenomenon and avoid them in advance in order to differentiate the Botnets traffic from normal network traffic. In this work, ensemble classifier algorithms to identify such damaging botnet traffic. We experimented with different ensemble algorithms to compare and analyze their ability to classify the botnet traffic from the normal traffic by selecting distinguishing features of the network traffic. Botnet Detection offers a reliable and cheap style for ensuring transferring integrity and warning the risks before its occurrence.
Volume: 10
Issue: 3
Page: 2543-2550
Publish at: 2020-06-01

Design and analysis of controllers for high voltage gain DC-DC converter for PV panel

10.11591/ijpeds.v11.i2.pp594-604
S. Nagaraj , R. Ranihemamalini , L. Rajaji
Bidirectional high gain DC-DC buck boost converter is a virtual interface among PV source and inverter fed motor drive. In this article, a PV panel integrating a non-isolated bidirectional DC/DC converter that has high voltage gain voltage and a 3 phase three level DC/AC inverter is projected. It highlights the comparison between proportional integral controller (PIC), fractional order proportional integral derivative Controller (FOPIDC) and fuzzy logic controller (FLC) based Bidirectional DC/DC Power Converter System (BDDPCS). The design, model and simulation using SIMULINK of open loop BDDPCS and closed loop PIC, FOPIDC and FLC based BDDPCS are done and the results are discussed. The findings indicate higher performance for FLC based control of BDDPCS. The proposed BDDPCS has merits such as bidirectional power transferability, lesser hardware count with enhanced dynamic response. The hardware of BDDPCS is tested and the experiment result is compared in association with simulation results.
Volume: 11
Issue: 2
Page: 594-604
Publish at: 2020-06-01

Ca[Mg3SiN4]Ce3+ phosphor: effect of particle concentration on lighting properties of the 7000K IPW-LEDs

10.11591/ijpeds.v11.i2.pp566-570
Q. S. Vu , Tang Tin Dao , Minh Tran
Nowadays, the white-light-emitting diodes (LEDs) have a vast application on the real-life based on its superior advantages such as energy efficiency, long lifetime, compactness, and environment-friendly and designable features in comparison with incandescent and fluorescent lamps. In this paper, we co-doping the Ca[Mg3SiN4]Ce3+ Phosphor on the phosphor compound of the 7000K In-cup Packaging White LEDs (IPW-LEDs) for improving the lighting properties. By varying the concentration of Ca[Mg3SiN4]Ce3+ Phosphor from 0% to 1.8%, the effect of the Ca[Mg3SiN4]Ce3+ Phosphor on the D-CCT, CRI, CQS, and LO of the 7000K IPW-LEDs are investigated. Using the Light Tool and software, the research results show that the concentration of the IPW-LEDs has a massive influence on the lighting properties of the 7000K IPW-LEDs. All the results are convinced by Light Tool simulation.
Volume: 11
Issue: 2
Page: 566-570
Publish at: 2020-06-01

Social aspects role and the behavior of drinking water among students in a private university

10.11591/ijere.v9i2.20432
Sitti Nur Djannah , Ratu Matahari
Lack of consuming drink water can cause many effects on the body. The long term effects of less consuming water dangerous for health. The diseases related to the less consuming water are respiratory tract infections, gastrointestinal disease, urinary infections, cancer, diabetic, kidney disease, and also others metabolic disorders. Those diseases affected to the financial burden due to this situation. It happens because of some factors, many studies mentioned about the behavior of drinking water among adolescents in school affected by some sociodemographic and behavioral factors. This study shows that most of respondents have a bad habit to keep their health kidney it is evident that the majority of respondents have urine color that tends to concentrated which is categorized as unhealthy urine. The limitation of the study was not measure the amount of drink water consuming for each respondents per day.
Volume: 9
Issue: 2
Page: 374-378
Publish at: 2020-06-01

IDAE framework: A guide for establishing industry-driven academic programs

10.11591/ijere.v9i2.20341
Challiz De Lima Omorog
An empirical study using descriptive-quantitative methods was conducted to investigate this hypothesis and examine the appropriateness of the framework components on the potential offering of an academic program at Camarines Sur Polytechnic Colleges (CSPC). The Identify, Determine, Assess and Establish (IDAE) model provided strategies and results essential for institutional decision-making. The model also proposes that if at least one of the components- I-D-A were not satisfied, the last component- E should not be pursued. Simply put, the academic program should not be instituted. However, further research is encouraged to support these arguments.
Volume: 9
Issue: 2
Page: 461-468
Publish at: 2020-06-01

Performance enhancement of solar powered floating photovoltaic system using arduino approach

10.11591/ijpeds.v11.i2.pp651-657
Nur Amirah Abdul Jamil , Siti Amely Jumaat , Suriana Salimin , Mohd Noor Abdullah , Ahmad Fateh Mohamad Nor
This paper presents Performance Enhancement of Solar Powered Floating Photovoltaic System using Arduino Approach. In the project, an Arduino nano as a main controller of the system. The objective of this project to monitor performance of the voltage, current and power output respectively. Furthermore, the prototype of the research is testing in two conditions: on water surface and on a land area. Based on the results, the power of the photovoltaic on the water surface is increased compared on the land area. The conclusion for this project is it can generate electricity using floating photovoltaic and the same time to monitor output of the system.
Volume: 11
Issue: 2
Page: 651-657
Publish at: 2020-06-01

Dimensionality assessment of binary response test items: A non-parametric approach of bayesian item response theory measurement

10.11591/ijere.v9i2.20454
Musa Adekunle Ayanwale , Flourish O. Isaac-oloniyo , Funmilayo Rebecca Abayomi
This study investigated dimensionality of Binary Response Items through a non-parametric technique of Item Response Theory measurement framework. The study used causal comparative research type of non-experimental design. The sample consisted of 5,076 public senior secondary school examinees (SSS3) between the age of 14-16 years from 45 schools, which were drawn randomly from three senatorial districts of Osun State, Nigeria. Instrument used for this study was 2018 Osun State unified multiple-choice mathematics achievement test items with empirical reliability coefficient of 0.82. Data obtained were analysed using Non-linear factor analysis, Stout’s Test of Essential Unidimensionality (STEU), Factor Analysis (FA), Full Information Factor Analysis (FIFA) and Bootstrap Modified Parallel Analysis Test (BMPAT). Results showed that both the BMPAT and STEU ascertained violation of unidimensionality assumption of the test items (the observed difference in the second eigenvalue of the observed data and that of second eigenvalue of the simulated data was statistically significant, p = 0.0099; Stout’s test rejected the assumption of essential unidimensionality, T = 10.6260, p<0.05). Non-linear factor analysis and full information factor analysis revealed that four dimensions embedded in the test items and loadings of the items showed within-item multidimensionality respectively. The authors’ concluded that modeling examinees’ performance with unidimensional model when it was actually multidimensional in nature would affect performance of examinees adversely and could lead to blur judgment. Consequently, it is recommended that unidimensional scoring method of Osun State unified mathematics achievement test implicit in Classical Test Theory should be jettisoned and an appropriate scoring model (multidimensional) should be embraced.
Volume: 9
Issue: 2
Page: 385-393
Publish at: 2020-06-01

Computer-based solar tracking system for PV energy yield improvement

10.11591/ijpeds.v11.i2.pp743-751
Rini Nur Hasanah , Aditya Bagus Setyawan , Eka Maulana , Tri Nurwati , Taufik Taufik
Electric energy is the main driver of various daily activities, both to increase productivity as well as to improve life quality. Energy demand is continuously increasing in parallel to the progress in technology and population growth. Depletion of fossil energy sources and awareness of environmental protection make people resort to renewable energy sources like solar energy. Low efficiency and intermittent characteristic of solar energy may originate from the sun movement along the day as well as the year. Efforts have always been tried to deal with the drawbacks. This paper proposes a computer-based tracking system to fully monitor and control a solar panel movement. The designed system has proven a good performance of working at certain time intervals, either hourly, or even continuously, as desired. Energy yield improvement has been achieved by processing the tracking results with the help of a microcontroller to optimize the power generation of the solar panel.
Volume: 11
Issue: 2
Page: 743-751
Publish at: 2020-06-01

Jammer against eavesdropper in half-duplex energy harvesting cooperative relaying networks: secrecy outage probability analysis

10.11591/ijpeds.v11.i2.pp879-885
Phu Tran Tin , Duy-Hung Ha , Minh Tran , Tran Thanh Trang
In this paper, we have investigated the Half-Duplex (HD) Energy Harvesting (EH) Cooperative Relaying Networks with one source node, one destination node, one intermediate relay and in the presence of the Jammer Against Eavesdropper. We have analyzed the system performance in terms of the integral form expression of secrecy outage probability. In addition, we have investigated the effect of source rate, time switching factor, energy coefficient, and the ratio Ps/N0 on the system performance. Finally, all the mathematical, analytical expressions are verified by Monte Carlo simulation, and the analytical results match well with the simulation ones to convince the correctness of the analytical expression.
Volume: 11
Issue: 2
Page: 879-885
Publish at: 2020-06-01

Approach to minimizing consumption of energy in wireless sensor networks

10.11591/ijece.v10i3.pp2551-2561
Seddiki Noureddine , Benahmed Khelifa , Belgachi Mohammed
The Wireless Sensor Networks (WSN) technology has benefited from a central position in the research space of future emerging networks by its diversity of applications fields and also by its optimization techniques of its various constraints, more essentially, the minimization of nodal energy consumption to increase the global network lifetime. To answer this saving energy problem, several solutions have been proposed at the protocol stack level of the WSN. In this paper, after presenting a state of the art of this technology and its conservation energy techniques at the protocol stack level, we were interested in the network layer to propose a routing solution based on a localization aspect that allows the creation of a virtual grid on the coverage area and introduces it to the two most well-known energy efficiency hierarchical routing protocols, LEACH and PEGASIS. This allowed us to minimize the energy consumption and to select the clusters heads in a deterministic way unlike LEACH which is done in a probabilistic way and also to minimize the latency in PEGASIS, by decomposing its chain into several independent chains. The simulation results, under "MATLABR2015b", have shown the efficiency of our approach in terms of overall residual energy and network lifetime.
Volume: 10
Issue: 3
Page: 2551-2561
Publish at: 2020-06-01

Evaluation of psoriasis skin disease classification using convolutional neural network

10.11591/ijai.v9.i2.pp349-355
Rosniza binti Roslan , Iman Najwa Mohd Razly , Nurbaity Sabri , Zaidah Ibrahim
Skin disease has lower impact on mortality compared to others but instead it has greater effect on quality of life because it involves symptoms such as pain, stinging and itchiness.  Psoriasis is one of the ordinary skin diseases which are relapsing, chronic and immune-mediated inflammatory disease.  It is estimated about 125 million people worldwide being infected with various types of skin infection.  Challenges arise when patients only predict the skin type disease they had without being accurately and precisely examined.  This is because as human being, they only observe and look at the diseases on the surface of the skin with their naked eye, where there are some limits, for example, human vision lacks of accuracy, reproducibility and quantification in the collection of image information.  As Plaque and Guttate are the most common Psoriasis skin disease happened among people, this paper presents an evaluation of Psoriasis skin disease classification using Convolutional Neural Network.  A total of 187 images which consist of 82 images for Plaque Psoriasis and 105 images for Guttate Psoriasis has been used which are retrieved from Psoriasis Image Library, International Psoriasis Council (IPC) and DermNet NZ.  Convolutional Neural Network (CNN) is applied in extracting features and analysing the classification of Psoriasis skin disease.  This paper showed the promising used of CNN with the accuracy rate of 82.9% and 72.4% for Plaque and Guttate Psoriasis skin disease, respectively.
Volume: 9
Issue: 2
Page: 349-355
Publish at: 2020-06-01

Contribution of DGs in the stability and voltage drop reduction for future MV network in desert regions

10.11591/ijpeds.v11.i2.pp977-987
Bouafia Abdelkader , Labed Djamel
Day by day, the integration of decentralized generation in medium voltage networks becomes more important during the last years and even in the near future. This increase causes, at the same time, several negative effects and rarely positive impacts on the stability of the network. Therefore, this work aims at analyzing the impact of ambient temperature on radial distribution network parameters’ e.g.: voltage drop and stability voltage level (index). Based on MATLAB program, different analyses of distributed generation (DG) insertion influence’s on voltage drop in the radial distribution feeder, as well as the influence of climatic conditions such as ambient temperature on network parameters. The Integration of Photovoltaic DGs in MV networks can play an important role in reducing the global warming effect (in voltage drop, and voltage stability index) especially in radial distribution feeder. Furthermore, it protects network’s parameters if its location and power are well selected.
Volume: 11
Issue: 2
Page: 977-987
Publish at: 2020-06-01

Fire alert system through text messages, with arduino mega technology and GSM SIM 900 module

10.11591/ijeecs.v18.i3.pp1215-1221
Omar Chamorro Atalaya , Dora Arce Santillan
The purpose of this article is to develop a fire alert system, to implement under the use of Arduino Mega technology and GSM module SIM 900 (GSM: Global System for mobile communications, SIM: Minimum System), with which through The programming and interconnection between these components can be obtained by capturing data through MQ2 sensors installed in the Industrial Automation Laboratory of the National Technological University of South Lima, and then send a fire alert signal through text messages to a mobile equipment located outside the laboratory; at a distance of 1000 meters; The relevance of this research is that its optimal response, detects the application of this system to the industrial park of Villa El Salvador, which has multiple warehouses, which a newspaper is affected by fire hazards, by the amount of flammable material They owned. Developing the investigation will determine the existence of a correlation factor of 0.973, between the reception time of the alert signal, with respect to the distance in the MQ2 sensor to detect the smoke; This factor tells us to state that the correlation is significant between both variables; with a ratio percentage equal to 98.90%, which was selected by the determination factor R2. 
Volume: 18
Issue: 3
Page: 1215-1221
Publish at: 2020-06-01

Comparative performance analysis of bridgeless boost and bridgeless buck converter for UPS application

10.11591/ijpeds.v11.i2.pp801-809
Khairul Safuan Muhammad , Rahimi Baharom , Siti Zaliha M. N , Wan Noraishah Wan Abdul Munim
In this paper, a comparative performance analysis of bridgeless boost and bridgeless buck converter for Uninterruptable Power Supply (UPS) is presented. The performance of UPS application in terms of their efficiency is compared between the conventional diode bridge converter and both bridgeless converters. The input supply power quality is also been analysed by applying open and closed loop control techniques to the converter. The results show that the efficiency and the input supply quality of the bridgeless converters are significantly improved. UPS using bridgeless boost converter has better performance in all aspect compared to bridgeless buck converter. Aligned with that, the closed loop controller for the converter has also improved the efficiency and PF more than the open loop controller in performing the UPS system. All the analytical work was performed using PSIM software.
Volume: 11
Issue: 2
Page: 801-809
Publish at: 2020-06-01
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