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Indonesian Journal of Electrical Engineering and Informatics (IJEEI)

IJEEI
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Published by IAES Indonesia Section and Partners

ISSN : 20893272 EISSN : - DOI : -

Core Subject : Science, Engineering,

Computer Science & IT Electrical & Electronics Engineering

Indonesian Journal of Electrical Engineering and Informatics (IJEEI) is a peer reviewed International Journal in English published four issues per year (March, June, September and December). The aim of Indonesian Journal of Electrical Engineering and Informatics (IJEEI) is to publish high-quality articles dedicated to all aspects of the latest outstanding developments in the field of electrical engineering. Its scope encompasses the engineering of Telecommunication and Information Technology, Applied Computing & Computer, Instrumentation & Control, Electrical (Power), Electronics, and Informatics.

Arjuna Subject : -

Articles 783 Documents

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Experimental Determination of Penetration Loss into Multi-Storey Buildings at 900 and 1800MHz Agbotiname Lucky Imoize; Olumide Simeon Ajose; Augustus Ehiremen Ibhaze; Oluwole Olasunkanmi Akingbogun; Iheanacho Henry Denwigwe
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 7, No 3: September 2019
Publisher : IAES Indonesian Section

This study presents building pentration loss into and around multi-storey buildings at 900 and 1800MHz based on experimental data obtained through drive test, using Test Mobile System (TEMS) investigation tools. The received signal level was measured inside and outside three buildings; the Senate building of the University of Lagos (B1), Mike Adenuga Towers (B2) and the Sapetro Towers (B3) located in Victoria Island, Lagos Nigeria. The building penetration loss (BPL) was derived from measurements, and the average and standard deviations of the BPL were computed. Results showed that the average BPL of 17.0dB and 13.8dB obtained from building B1 at 900 and 1800MHz, respectively, are comparatively higher than those of buildings B2 and B3. The standard deviation of the BPL shows an increase from 5.2dB at 900MHz to 7.8dB at 1800MHz for building B1, whereas it fell drastically from 8.65dB at 900MHz to 1.40dB at 1800MHz for B2, and a similar behaviour in B1 is seen for building B3 where it rises sharply from 1.55dB at 900MHz to 6.55dB at 1800MHz. This is in agreement with the general trend of increasing penetration loss with increase in frequency except for building B2 where an anomaly is observed. In order to examine the correlation between the measured and the predicted BPL, cubic regression was used to fit a third order polynomial to the measured BPL. Overrall, the fitted models could find useful applications in the design of novel and robust BPL models for modern multi-floored buildings.

Summative Stereoscopic Image Compression using Arithmetic Coding Thafseela Koya Poolakkachalil; Saravanan Chandran
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 7, No 3: September 2019
Publisher : IAES Indonesian Section

Image compression targets at plummeting the amount of bits required for image representation for save storage space and speed up the transmission over network. The reduction of size helps to store more images in the disk and take less transfer time in the data network. Stereoscopic image refers to a three dimensional (3D) image that is perceived by the human brain as the transformation of two images that is being sent to the left and right human eyes with distinct phases. However, storing of these images takes twice space than a single image and hence the motivation for this novel approach called Summative Stereoscopic Image Compression using Arithmetic Coding (S2ICAC) where the difference and average of these stereo pair images are calculated, quantized in the case of lossy approach and unquantized in the case of lossless approach, and arithmetic coding is applied. The experimental result analysis indicates that the proposed method achieves high compression ratio and high PSNR value. The proposed method is also compared with JPEG 2000 Position Based Coding Scheme(JPEG 2000 PBCS) and Stereoscopic Image Compression using Huffman Coding (SICHC). From the experimental analysis, it is observed that S2ICAC outperforms JPEG 2000 PBCS as well as SICHC.

Effect of DC Filters on Selection of Fault Discriminator for Unit Protection of Monopolar HVDC Transmission System Soma Deb; H.K. Verma
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 7, No 3: September 2019
Publisher : IAES Indonesian Section

Various research works reported on the unit protection of monopolar high-voltage direct-current transmission system assumed either no dc filter or a certain type of dc filter in the system. From the survey of literature, it appears that no study has been made to evaluate the effect of the type of dc filter on the system performance and consequent effect on the selection of fault discriminator for development of protection schemes. The work reported in this paper aims at selection of suitable fault discriminators for unit protection of HVDC transmission system in the presence of three different types of dc filter. The study has been carried out on a 500-kV line- commutated-converter-based monopolar HVDC system equipped with any of the three filters, namely, cascaded double-tuned, parallel double-tuned or triple-tuned filter. Simulation has been carried out with PSCAD/EMTDC. Critical analysis of the simulation results shows how the type of the dc filter influences the choice of fault discriminator

Design and modeling of integrated octagonal shape inductor with substrate silicon in a buck converter Abdelhadi NAMOUNE; Rachid TALEB; Noureddine MANSOUR; Abdelkader BELBOULA
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 7, No 3: September 2019
Publisher : IAES Indonesian Section

The paper discusses the design and modeling of an integrate octagonal shaped inductor with silicon substrate. A validated equivalent electrical model of the integrated octagonal shaped spiral inductor is developed. The model is used to analyze and evaluate the quality factor and the inductance of the inductor structure proposed under different physical parameters setting. These include the number of turns, spacing between turns and the inner diameter. The simulation results show that an appropriate selection of physic a parameters can achieve an enhanced quality factor and improved inductance. PSIM simulator is used for the implementation of the integrated inductor in a micro buck converter. The simulation results demonstrate that our proposals are very promising approaches for the monolithic integration of DC-DC converters.

Microstrip dual mode multi-bandpass filters based on tree fractal slotted resonator for wireless communication Manju Bhaskar; Thomaskutty Mathew
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 7, No 3: September 2019
Publisher : IAES Indonesian Section

Dual mode microstrip multi-bandpass filter is proposed with tree fractal slot on a square patch resonator. The tree fractal slotted resonators are generated from conventional square patch using an iterative tree fractal generator method. A single square patch is used for realizing both dual and tri-bandpass filters exploiting the dominant, higher order and its corresponding degenerate resonant modes by the tree fractal iteration on the diagonal unequal slots on the square patch.The resonant peaks, transmission zeros and bandwidth of the pass bands can be tuned by varying the length and width of the fractal slot. By optimizing various parameters dual mode dual and tri-band pass filters are simulated, fabricated and measured. The proposed filter finds application in wireless communication devices and falls in the bands of GSM, WLAN, Bluetooth, Zigbee, WiMax and WiFi.

Insights on Significant Implication on Research Approach for Enhancing 5G Network System Vani BP; R Sundaraguru
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 7, No 3: September 2019
Publisher : IAES Indonesian Section

With the exponential growth of mobile users, there is a massive growth of data as well as novel services to support such data management. However, the existing 4G network is absolutely not meant for catering up such higher demands of bandwidth utilization as well as servicing massive users with similar Quality of service. Such problems are claimed to be effectively addressed by the adoption of 5G networking system. Although the characteristics of 5G networking are theoretically sound, still it is under the roof of the research. Therefore, this paper presents a discussion about the conventional approach as well as an approach using cognitive radio network towards addressing the frequently identified problems of energy, resource allocation, and spectral efficiency. The study collects the existing, recent researches in the domain of 5G communications from various publications. Different from existing review work, the paper also contributes towards identifying the core research findings as well as a significant research gap towards improving the communication in the 5G network system.

Hard Exudate Extraction from Fundus Images using Watershed Transform Vasanthi Satyananda; K.V. Narayanaswamy; K Karibasappa
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 7, No 3: September 2019
Publisher : IAES Indonesian Section

Diabetic Retinopathy is a medical condition which affects the eyes due to increased blood sugar levels. This is characterized by presence of exudates - deposits of lipids in the posterior pole of the retina. If this ailment is not treated in earlier stages these deposits can cause blurred vision or even permanent blindness. This paper concentrates on extraction of hard exudates and optic disc from the retinal images of eyes using Marker based Watershed approach, which uses the minima imposition method to create mask and marker. The varying contrast across all the images has been taken care by a non-linear equation. Once these bright objects have been extracted from fundus images, area estimation is performed to eliminate the optic disk, thus retaining only exudates. These images have been procured from publicly available databases. Though software systems are easy to install, they prove to be expensive in terms of time and cost; thus this method has also been implemented on FPGA for an on-chip solution. The precision and sensitivity for exudate extraction sans optic disk are found to be 92.4% and 83.78% respectively. Though other techniques exist which provide better accuracy, the method described in this paper is found to be hardware friendly in comparison with other proven methods. Few steps of the algorithm developed are implemented on FPGA to provide an embedded system approach to this work, considering the advantages of a hardware-software combination.

Detection and Discrimination of Islanding and Faults in distribution system with Distributed Generation by using Wavelet based Alienation approach Kamala Devi Kolavennu; Abdul Gafoor Shaik
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 7, No 3: September 2019
Publisher : IAES Indonesian Section

This paper presents a wavelet transform based alienation technique for the protection of a radial 5 bus distribution system integrated with four wind type doubly fed Induction generators (DFIG).This technique is used to detect islanding condition and faults, classification of faults and their discrimination. Islanding is simulated at point of common coupling (PCC) and faults are simulated at each DG bus of the network. Daubechies wavelet transform has been used to decompose the current signals to get approximate coefficients. The Alienation coefficients of these approximate decompositions are termed as islanding and fault indexes. These indexes have been compared with predetermined threshold to detect islanding and faults. The same threshold value is utilized to discriminate transients associated with islanding and fault. Alienation coefficients at each bus over a half cycle window clearly detect both islanding and fault. Testing of the proposed algorithm has been carried out for various angles of incidence. Hence, the proposed algorithm is more effective and successful for finding the islanding condition as well as faults in distribution system with distributed generation.

Rain Attenuation at Tropical Region- Site Diversity Gain Models' Sensitivity Fazdliana Samat; Mandeep Singh Jit Singh
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 7, No 3: September 2019
Publisher : IAES Indonesian Section

Rain is the major impairment to the signal propagation from satellite to earth. The signal that brings an important data might be lost in a sudden due to heavy rainfall especially in the region with tropics climate. The undesirable effect mainly occurred at above of 10 GHz signal frequency which is expected to bring more data compared to a lower frequency. One of the possible solutions that was proven to be effective to overcome this impairment is the implementation of site diversity. The empirical model that has been developed to measure the effectiveness of the diverse site is yet to be finalized in tropical region. This article compares ITU-R, Hodge, Panagopoulos, Semire and Yeo Model to observe their sensitivity to the major factors that contributes to the site diversity gain such as frequency, site separation distance, elevation angle and baseline orientation angle. These major factors are used as input to the models. The default factors’ value was set to 20.2 GHz frequency, 68.8° of elevation angle, 42.52 km site separation distance and 65° of baseline angle. The factors were interchangeably with 12.255 GHz frequency, 25° of elevation angle, 10 km distance and 4° of baseline angle, which created 16 sets of combinations. The percentages of increment or decrement of the gain predicted by each model with respect to the default parameter were calculated. In overall, each model has their own discrepancy towards these factors and a more dynamic model should be developed to improve the weaknesses.Rain is the major impairment to the signal propagation from satellite to earth. The signal that brings an important data might be lost in a sudden due to heavy rainfall especially in the region with tropics climate. The undesirable effect mainly occurred at above of 10 GHz signal frequency which is expected to bring more data compared to a lower frequency. One of the possible solutions that was proven to be effective to overcome this impairment is the implementation of site diversity. The empirical model that has been developed to measure the effectiveness of the diverse site is yet to be finalized in tropical region. This article compares ITU-R, Hodge, Panagopoulos, Semire and Yeo Model to observe their sensitivity to the major factors that contributes to the site diversity gain such as frequency, site separation distance, elevation angle and baseline orientation angle. These major factors are used as input to the models. The default factors’ value was set to 20.2 GHz frequency, 68.8° of elevation angle, 42.52 km site separation distance and 65° of baseline angle. The factors were interchangeably with 12.255 GHz frequency, 25° of elevation angle, 10 km distance and 4° of baseline angle, which created 16 sets of combinations. The percentages of increment or decrement of the gain predicted by each model with respect to the default parameter were calculated. In overall, each model has their own discrepancy towards these factors and a more dynamic model should be developed to improve the weaknesses.

Comparison of Transient Stability Response for MMPS using UPFC with PI and Fuzzy Logic Controller Rashid H. AL-Rubayi; Luay G. Ibrahim
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 7, No 3: September 2019
Publisher : IAES Indonesian Section

The increasing pressure on the power system increases the complexity that is becoming a concern for the stability of the power system and mainly for transitory stability. To operate the system in the event of faults, Flexible AC Transmission System (FACTS) devices are used that provide opportunities to control power and vibrations damping. This paper deals with the two control strategies of the Unified Power Flow Controller (UPFC) to damping the system oscillations stability. The stability of the Multi-Machine Power System (MMPS) was analysed with the presence of UPFC. The first strategy is the traditional PI controller (PI-C) with UPFC, and the second strategy is the proposed Fuzzy Logic controller (FL-C) proposed for UPFC device along with PI controller. The MATLAB R2014a was used in all simulations. Based on the results, FL-C for UPFC device along with the PI controller has proven its superiority by has enhanced response to the system, thus minimized in the transitions overshoot and undershoot, and has lower ripple compared to traditional PI-C, both with and without UPFC.

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