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Performance Characteristics of Miniature Photovoltaic Farm Under Dynamic Partial Shading

10.11591/ijeecs.v11.i1.pp400-408
Antonius Rajagukguk , Dedet Candra Riawan , Mochamad Ashari
This paper presents investigation of  performance characteristic on a miniature photovoltaic farm under dynamic partially shaded condition. Effects of applying bypass diodes in each photovoltaics modul and the transient current of the diode is also investigated. The miniature of PV Farm consisting 4 photovoltaic panels, connected in series to form one string. The whole system comprises 5 photovoltaic strings, which are connected in parallel producing 30 volt and 60 watt peak power fromminiature PV farm.  Shading of 10%, 20 % up to 50 % with dynamically changed is applied. Result from both laboratory tests and simulations is investigated and show very similar.
Volume: 11
Issue: 1
Page: 400-408
Publish at: 2018-07-01

M[x]/G/1 Multistage Queue with Stand-by Server During Main Server’s Interruptions

10.11591/ijeecs.v11.i1.pp275-283
Yuvarani Chandrasekaran , Vijayalakshmi C
This paper investigates a multistage batch arrival queue with different server interruptions and a second server replaces the main server during the interruptions. The different server interruptions are assumed to be: multiple vacation, extended vacation, breakdown with delay time and server under two phases of repair. Customers are assumed to arrive in batches according to Poisson process and a single server provides service to the customers. When the main server is inactive due to the interruptions, stand-by server provide service to the arrivals. In addition, customers may renege during server breakdown or during server vacation due to impatience. Transient solution and the corresponding steady state solution is derived using supplementary variable technique.
Volume: 11
Issue: 1
Page: 275-283
Publish at: 2018-07-01

Analyzing and Predicting User Navigation Pattern from Weblogs using Modified Classification Algorithm

10.11591/ijeecs.v11.i1.pp333-340
P.G. OM Prakash , A. Jaya
A Weblogs contains the history of User Navigation Pattern while user accessing the websites. The user navigation pattern can be analyzed based on the previous user navigation that is stored in weblog. The weblog comprises of various entries like IP address, status code and number of bytes transferred, categories and time stamp. The user interest can be classified based on categories and attributes and it is helpful in identifying user behavior. The aim of the research is to identifying the interested user behavior and not interested user behavior based on classification. The process of identifying user interest, it consists of Modified Span Algorithm and Personalization Algorithm based on the classification algorithm user prediction can be analyzed. The research work explores to analyze user prediction behavior based on user personalization that is captured from weblogs. 
Volume: 11
Issue: 1
Page: 333-340
Publish at: 2018-07-01

Feasibility Study of Grid-Connected Solar Photovoltaic (PV) System for Primary School in Johor

10.11591/ijeecs.v11.i1.pp233-240
Siti Amely Jumaat , Adhwa Amsyar Syazwan Ab Majid , Chin Kim Gan , Mohd Noor Abdullah , Nur Hanis Radzi , Rohaiza Hamdan , Suriana Salimin
This project aims to determine the potential of grid connected solar Photovoltaic (PV) implementation and project planning of solar PV System in school.  Generally, the educational institution used huge amount of electricity to operate so their monthly bills is expensive. Therefore, the project planning is necessary to determine the potential of solar PV system implementation. The project planning consists of the current electricity consumed by the school and the amount of 120W Monocrystalline PV module needed by them. The cost of project are determines to identify the initial cost of this project implementation. Lastly, analysis on the profit collected by SK Pintas Raya after 20 years of solar PV system implementation proved the importance of this project.
Volume: 11
Issue: 1
Page: 233-240
Publish at: 2018-07-01

Effect of Deposition Temperature on Self-Catalyzed ZnO Nanorods via Chemical Vapour Deposition Method

10.11591/ijeecs.v11.i1.pp209-214
Shafinaz Sobihana Shariffudin , Puteri Sarah Mohamad Saad , Hashimah Hashim , Mohamad Hafiz Mamat
The morphological, structural, optical and electrical properties of ZnO nanorods are investigated as a function of deposition temperature. The ZnO nanorods were grown on ZnO seed catalyst layer at temperatures between 750oC – 825oC using thermal chemical vapour deposition method.  Sample deposited at 825oC showed the highest crystalline orientation. The FE-SEM micrographs and the intense peak along (002) direction in the XRD spectra of this sample implied that the nanorods possess c-axis orientation. PL spectra showed two common ZnO peaks which centered at 380 nm and 540 nm. Two-point probe I-V measurement revealed ohmic behaviour with the gold metal contact, whereby the current increase with the deposition temperature.
Volume: 11
Issue: 1
Page: 209-214
Publish at: 2018-07-01

Lightning Effect on Scaled Protected and un-Protected Building Structures and the Air Terminal Bypasses

10.11591/ijeecs.v11.i1.pp182-186
Irshad Ullah , MNR Baharom , H. Ahmad , H.M. Luqman , Zainab Zainal
Lightning strikes affect the building structures by producing high electric field on the surface and around the building structure. Lightning air terminal is a traditional enemy of the thunder storm as it captures the lightning flashes. Effect of lightning flash on the building structure when the lightning air terminal was not installed and when it was installed on different building structure was studied in this paper.  Similarly most of the time Lightning Air Terminal (LAT) bypasses take palce on different building structures and thus a lot of building structures get damage. The phenomenon of bypasses was also studied in this paper. When thunder storm strikes a building the electric field effect is propagated throughout the building surface and it damages the entire building. When the air terminal is places on the corners/edges it captures the lightning flashes on certain points and discharges it into the ground and the building remains safe. This phenomenon was studied in detail in this paper and it was proved that by installing the air terminal the remaining building structure was safe and the electric field intensity was concentrated on the installed air terminal rather than the whole roof top and the rest of the building.
Volume: 11
Issue: 1
Page: 182-186
Publish at: 2018-07-01

Soil Moisture Monitoring Using Field Programmable Gate Array

10.11591/ijeecs.v11.i1.pp169-174
Muhammed Ihsan Husni , Mohammed Kareem Hussein , Mohd Shamian Bin Zainal , Anuar Bin Hamzah , Danial Bin Md Nor , Hazwaj Bin Mhd Poad
This paper presents a solution for remote monitoring and sensing of different agricultural parameters that effect the plant growth and productivity. Hardware descriptive language has been used for the implementation of proposed topology on Field Programmable Gate Arrays. The hardware used for this purpose is an Altera board. The simulated results take into consideration the environmental factors such as the humidity, soil moisture content and the temperature. The proposed system continuously monitors the environmental changes for any updates. The system also controls a water motor that is turned on as the system senses the reduction in moisture content. The system implementation on hard wave level show promising results and have been discussed in detailed.
Volume: 11
Issue: 1
Page: 169-174
Publish at: 2018-07-01

Hybrid Artificial Neural Network with Meta-heuristics for Grid-Connected Photovoltaic System Output Prediction

10.11591/ijeecs.v11.i1.pp121-128
Norfarizani Nordin , Shahril Irwan Sulaiman , Ahmad Maliki Omar
This paper presents the performance evaluation of hybrid Artificial Neural Network (ANN) model with selected meta-heuristics for predicting the AC output power fof a Grid-Connected Photovoltaic (GCPV). The ANN has been hybridized with three meta-heuristics, i.e. Cuckoo Search Algorithm (CSA), Evolutionary Programming (EP) and Firefly Algorithm (FA) separately. These meta-heuristics were used to optimize the number of neurons, learning rate and momentum rate such that the Root Mean Square Error (RMSE) of the prediction was minimized during the ANN training process. The results showed that CSA had outperformed EP and FA in producing the lowest RMSE. Later, Mutated Cuckoo Search Algorithm (MCSA) was introduced by incorporating Gaussian mutation operator in the conventional CSA. Further investigation showed that MSCA performed better prediction when compared with the conventional CSA in terms of RMSE and computation time.
Volume: 11
Issue: 1
Page: 121-128
Publish at: 2018-07-01

A Proposed Java Static Slicing Approach

10.11591/ijeecs.v11.i1.pp308-317
Basem Alokush , Mohammad Abdallah , Mustafa Alrifaee , Mosa Salah
Program slicing is to abstract a part of source code depending on the point of interest. It used widely in maintenance, debugging and testing. There are many slicing techniques such as static, dynamic, and amorphous. In this paper, we choose to develop a new approach applying static slicing on Java programs. The new approach simplifies the data dependency using arrays. A new Tool called Java Multi-Slicing Tool (JavaMST) has been introduced to apply this approach.JavaMST presents new ways to slice any simple java code segment, it allows you to extract the variables and its direct and indirect dependencies from the code, using backward, forward or both slicing techniques to produce the needed code. This tool is a simple tool designed to deal with simple java code segments. JavaMST can be run under any operating system and does not require a specialized platforms or plug-ins. Therefore, it is useful to be used for educational purposes.
Volume: 11
Issue: 1
Page: 308-317
Publish at: 2018-07-01

Multi objective Adaptive Tumbling Bacterial Foraging in VAR Solutions for Sustainable Power System Operation

10.11591/ijeecs.v11.i1.pp129-136
E. E. Hassan , T. K. A. Rahman , Z. Zakaria , N. Bahaman , M. H. Jifri
The application of the developed optimization technique Multi Objective Adaptive Tumbling Bacterial Foraging (MOATBFO) was introduced to solve the multi objective Reactive Power Planning (RPP) problems. The objective of conventional RPP problems is to minimize the total power losses in a system. However, in this study, the aspect of security was also taken into consideration in terms of voltage stability condition in solving RPP problems. Hence, the RPP problem is now termed as security constrained RPP (SCRPP) and generalized into a multi objective function via weighted sum method that labeled as MOSCRPP. The best minimum voltage solution for the network is aimed in ensuring the sustainable power system operation.  In order to verify the performance of the proposed technique were used for MOSCRPP in the IEEE 57 bus system thus the comprehensive analyses were also conducted with other multi objective Meta heuristic Evolutionary Programming (Meta-EP). From the results it shows that the multi objective ATBFO optimization is able to give better overall improvement in the objective functions for SCRPP problems.
Volume: 11
Issue: 1
Page: 129-136
Publish at: 2018-07-01

Black Phosphorus Saturable Absorber for Pulse Generation Using Q-switched Teachnique

10.11591/ijeecs.v11.i1.pp36-40
Belal Ahmed Hamida , L A Hussein , Sheroz Khan , Mohamed Hadi Habaebi , Ahmad Anwar Zainuddin , T Eltaif , S W Harun
This paper reported a passive Q-switched erbium doped fiber laser (EDFL) using two-dimensional (2D) material of black phosphorus saturable absorber (BP-SA). The maximum output power reached is 3.54 mW, which is generated by pump power of 42.327 mW. The results show that a stable pulse was generated with repetition rate starts at about 9.606 kHz and ends at about 44.72 kHz and very narrow pulse width between 40.01 µs and 9.84 µs and pulse energy 80 nJ. Clearly, the stability of the Q-switched pulse train was achieved because the BP-SA film was inserted in the laser ring cavity.
Volume: 11
Issue: 1
Page: 36-40
Publish at: 2018-07-01

Microclimate control of a greenhouse by adaptive Generalized Linear Quadratic strategy

10.11591/ijeecs.v11.i1.pp377-385
Mohamed Essahafi , Mustapha Ait Lafkih
To highlight the conceptual aspects related to the implementation of techniques optimal control in the form state, we present in this paper, the identification and control of the temperature and humidity of the air inside a greenhouse. Using respectively an online identification based on the recursive least squares with forgotten Factor method and the multivariable adaptive linear quadratic Gaussian approach which the advanced technique (LQG) is presented.  The design of this controller parameters is based on state models identified directly from measured greenhouse data. hence the performances of the controller developed are illustrated by different tests and simulations on identified models of a greenhouse. Discussions on the results obtained are then processed in the paper to show the effectiveness of the controller in terms of stability and optimization of the cost of control.
Volume: 11
Issue: 1
Page: 377-385
Publish at: 2018-07-01

Microwave Planar Sensor for Permittivity Determination of Dielectric Materials

10.11591/ijeecs.v11.i1.pp362-371
Rammah Alahnomi , Natasha Binti Abd Hamid , Zahriladha Zakaria , Tole Sutikno , Amyrul Azuan Mohd Bahar
This paper presents a single port rectangular ring resonator sensor for material characterizations. The proposed sensor is designed at operating resonance frequency of 4 GHz. The sensor consists of micro-strip transmission line and ring resonator with applying the enhancement method to the coupling gaps. The using of enhancement method is to improve the return loss of the sensor and sensitivity in terms of Q-factor, respectively. Furthermore, the proposed sensor is designed and fabricated on Roger 5880 substrate. Standard materials with known permittivity have been used in order to validate the sensor’s sensitivity. Based on the results, the percentage of error for the proposed rectangular sensor is 0.2% to 8%. It can be demonstrated that the proposed sensor will be useful for various applications such as medicine, bio-sensing and food industry.
Volume: 11
Issue: 1
Page: 362-371
Publish at: 2018-07-01

Recognizing Foreign Object Debris (FOD): False Alarm Reduction Implementation

10.11591/ijeecs.v11.i1.pp41-46
Talha Khan , Muhammad Alam , Kushairy Kadir , Zeeshan Shahid , MS. Mazliham , Sheroz Khan , Mohammad Miqdad
Recognition of foreign object debris (FOD) on ruwanys is mandatory to avert the accidents and emergency. The accurate and precise estimation of FOD is very complex because of the intricated shape and their different tiny sizes as well which are noe easily visilble. For the prompt removal of the FOD from the runways a robust, accurate and precise system is badly needed. Therefore, in our research we have proposed a vigor system comprised of ultrasonic sensor and infrared images capturing device with a combination of fake alerts reduction algorithm based on infrared images distribution and morphological edge identification. After the segmentation and morphological processing, the decision a unifying divider was designed to identify the actual targets. Several approaches have been done for the detailed and rapid investigation of FOD. Testing and validation have proved that our proposed research performed well compared to the other techniques. In this research ultrasonic sensors results are integrated with the processed infrared images.
Volume: 11
Issue: 1
Page: 41-46
Publish at: 2018-07-01

Chaotic Local Search Based Algorithm for Optimal DGPV Allocation

10.11591/ijeecs.v11.i1.pp113-120
Sharifah Azma Syed Mustaffa , Ismail Musirin , Mohd. Murtadha Othman , Mohamad Khairuzzaman Mohamad Zamani , Akhtar Kalam
The advent of advanced technology has led to the increase of electricity demand in most countries in the world. This phenomenon has made the power system network operate close to the stability limit. Therefore, the power utilities are looking forward to the solution to increase the loadability of the existing infrastructure. Integration of renewable energy into the grid such as Distributed Generation Photovoltaic (DGPV) can be one of the possible solutions. In this paper, Chaotic Mutation Immune Evolutionary Programming (CMIEP) algorithm is used as the optimization method while the chaotic mapping was employed in the local search for optimal location and sizing of DGPV. The chaotic local search has the capability of finding the best solution by increasing the possibility of exploring the global minima. The proposed technique was applied to the IEEE 30 Bus RTS with variation of load. The simulation results are compared with Evolutionary Programming (EP)  and it is found that CMIEP performed better in most of the cases.
Volume: 11
Issue: 1
Page: 113-120
Publish at: 2018-07-01
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