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31,456 Article Results

Improved Performance of Four Switch Three Phase with SEPIC-Based Inverter

10.11591/ijeecs.v2.i1.pp96-106
Prabu B , Murugan M
The proposed novel four-switch three-phase (FSTP) inverter is to design to reduce the rate, difficulty, mass, and switching losses of the DC-AC conversion system. Here the output line voltage cannot exceed half the input voltage in the out-dated FSTP inverter and it operates at half the DC input voltage. Single-Ended Primary-Inductance Converter (SEPIC) is a novel design for the FSTP inverter proposed in this paper. In this proposed topology the necessity of output filters is not necessary for the pure sinusoidal output voltage. Related to out-dated FSTP inverter, the proposed FSTP SEPIC inverter raises the voltage utilization aspect of the input DC supply, where the suggested topology delivers the higher output line voltage which can be extended up to the full value of the DC input voltage. In the proposed topology a control used called the integral sliding-mode (ISM) control and this control is used to enhance its dynamics and to ensure strength of the system during different operating conditions. Simulation model and results are used to authorise the proposed concept and simulations results show the effectiveness of the proposed inverter.
Volume: 2
Issue: 1
Page: 96-106
Publish at: 2016-04-01

Finding Kicking Range of Sepak Takraw Game: Fuzzy Logic and Dempster-Shafer Theory Approach

10.11591/ijeecs.v2.i1.pp187-193
Andino Maseleno , Md. Mahmud Hasan , Muhammad Muslihudin , Tri Susilowati
Sepak takraw is played by two regus, each consisting of three players. One of the three players shall be at the back and he is called a Tekong. The other two players shall be in front, one on the left and the other on the right. Having volley kicked a throw from the net by a team mate, the ball must then travel over the net to begin play. During the service, as soon as the Tekong kicks the ball, all the players are allowed to move about freely in their respective courts. The novel approach is the integration within a Tsukamoto's Fuzzy reasoning and inferences for evidential reasoning based on Dempster-Shafer theory. Sepak takraw is a highly complex net-barrier kicking sport that involves dazzling displays of quick reflexes, acrobatic twists, turns and swerves of the agile human body movement. Because of the human’s involvement in the game, the Fuzzy Logic type reasoning are the most appropriate. The individual rule outputs of Tsukamoto's Fuzzy reasoning scheme are crisp numbers, and therefore, the functional relationship between the input vector and the system output can be relatively easily identified. The result reveals that if  Tekong is kick far and front player is kick near then another regu's player is kick far, if  Tekong is kick near and front player is kick far then another regu's player is kick near, moreover possibility of kicking range is another regu's player is kick far in kicking range.
Volume: 2
Issue: 1
Page: 187-193
Publish at: 2016-04-01

Apply Optimarin Ballast System for Vietnam’s Fleet to Prevent Sea Pollution from Non-Indigenous Aquatic Species

10.11591/ijeecs.v2.i1.pp145-150
Dinh-Chien Dang , Ming-Hung Shu , Bi-Min Hsu , Thanh-Lam Nguyen , Phung-Kim Truong , Viet-Thanh Nguyen
Marine species are usually transported from one area to another by the ballast water used to provide safe operation for vessels. After entering a new environment, they may cause damage to the local ecosystem, leading to the disruptions of the entire marine ecosystem, and seriously affecting not only biodiversity but also several industries such as fishing and aquaculture. Therefore, the United Nations (UN) considers the presence of non-indigenous oceanic species to be one of the top four serious threats to the global environment; and, how to effectively control the non-indigenous aquatic species has captivated the special attentions of several scientists worldwide. With the significant development in the maritime industry, strict requirements the control and management of ships’ ballast water and sediments set by The UN's International Maritime Organization (IMO) have well shaped the trend in installing ballast water treatment systems. Among them, Optimarin Ballast System is preferably used in practice. However, currently, Vietnam’s fleets use a different chemical method which is not utilized elsewhere in the world. Because it is not environmentally friendly and its effectiveness hasn’t been validated yet, this paper suggests the application of OBS in the Vietnam’s fleet in order to prevent sea pollution from non-indigenous aquatic species and minimize its associated negative impacts as well as make the Vietnam’s fleet comply with IMO requirements in protecting the global environment for sustainable development.
Volume: 2
Issue: 1
Page: 145-150
Publish at: 2016-04-01

Single Phase Variable Sampling Phase Locked Loop using Composite Observer

10.11591/ijeecs.v2.i1.pp49-60
K Arun , K Selvajyothi
An observer based variable sampling period phase locked loop is introduced for grid connected systems. The composite observer acts as an efficient estimator of the fundamental components from a periodic input signal rich in DC and harmonics. The observer gains are designed using pole placement technique, which inherently ensures the stability of this estimator.  Even under drift frequency, a constant number of samples (512) per cycle are maintained with the help of the numerically controlled oscillator. This makes the oscillator gain elements in the observer a constant and eliminates the trigonometric computation. This phase locked loop is found to be working in a wide range of frequency 40 – 70Hz. The performance of the proposed scheme is studied with a synthetic harmonic rich signal as well as validated by implementing the PLL in Cyclone IV FPGA with a real time grid voltage.
Volume: 2
Issue: 1
Page: 49-60
Publish at: 2016-04-01

Bridgeless Isolated Cuk PFC Implementation using PID and Neural Controller

10.11591/ijeecs.v2.i1.pp88-95
R. Pireethi , R. Balamurugan
 The comparision of Bridgeless  Isolated Cuk converter using Proportional  Integral  Derivative (PID) and Neural controller (NC) is presented in this paper. Due to Diode Bridge Rectifier (DBR) conventional converters suffer from high conduction loss. Bridgeless Cuk converter is used  to eliminate the issues. Bridgeless   Isolated (BLI)  Cuk  converter is used to withstand high voltage. Compare to Continuous Conduction Mode (CCM) Discontinuous Conduction Mode (DCM) utilize less number of sensors. To obtain unity power factor it is used to  work in  DCM mode. BLI Cuk Converter is implemented in  two controller PID and  Neural controller to observe  power factor. Performance of BLDC motor  is simulated  by using MATLAB/SIMULINK software. 
Volume: 2
Issue: 1
Page: 88-95
Publish at: 2016-04-01

Optimization of Ship’s Route Scheduling Using Genetic Algorithm

10.11591/ijeecs.v2.i1.pp180-186
Vivi Nur Wijayaningrum , Wayan Firdaus Mahmudy
Route scheduling is a quite complicated process because it involves some determinant factors. Several methods have been used to help resolve the NP-hard problems. This research uses genetic algorithm to assist in optimizing ship scheduling, that where there are several ports to be visited by some ships. The goal is to divide the ship to go to a specific port so that each port is only visited by one ship to minimize the total distance of all ships. The computational experiment produces optimal parameters such as the number of popsize is 30, the number of generations is 100, crossover rate value is 0.3 and mutation rate values is 0.7. The final results is an optimal ship route by minimizing the distance of each ship.
Volume: 2
Issue: 1
Page: 180-186
Publish at: 2016-04-01

A Novel Method Based on Teaching-Learning-Based Optimization for Recloser Placement with Load Model Consideration in Distribution System

10.11591/ijeecs.v2.i1.pp1-10
Sina Khajeh Ahmad Attari , Mohammad Bakhshipour , Mahmoudreza Shakarami , Farhad Namdari
This paper proposed a novel technique based on teaching-learning-based optimization (TLBO) algorithm in order to find optimal placement of reclosers in the distribution networks which is applied to improve reliability. Reclosers use to eliminate transient faults, faults isolation, network management and enhance reliability to reduce customer outages. According to recloser role in network reliability, the cost for the installation and maintenance must be sustained by distribution companies. Therefore, selecting sufficient number and suitable location for reclosers are important issue. In this paper, the proposed objective function for optimal recloser number and placement has been formulated to improve three reliability indices which consists of three terms; i.e. System Average Interruption Frequency Index (SAIFI), System Average Interruption Duration Index (SAIDI) and Average Energy Not Supplied (AENS). Besides the load model effectiveness has been considered to the simulation. To verify the efficiency of proposed method, it has been conducted to IEEE 69-bus radial distribution system. The obtained simulation results demonstrate the reliability improvement.
Volume: 2
Issue: 1
Page: 1-10
Publish at: 2016-04-01

Satellite-Based Land Surface Temperature Estimation of Bogor, Indonesia

10.11591/ijeecs.v2.i1.pp221-228
Ema Kurnia , I Nengah Surati Jaya , Widi Atmaka
 The earth’s average temperature has been a big issue on the global warming. The warming of the earth is largely the results of emission of carbon dioxide and other greenhouse gasses (GHG) from human activities. As a hinterland of the Capital City, in the last two decades, Bogor is also getting warmer in comparison with the previous decades. This paper presents how the land surface temperature (LST) had been estimated using Split-Window (SW) algorithm and how its spatial distribution in Bogor was computed. The spectral radiance of Landsat-8 TIR bands 10 and 11, the emissivity values, and water vapor used as the input on SW Algorithm. The study revealed that the temperature within the built-up area, have warmer temperature than their surrounding ranging from 400C to 450C of 3,403.9 ha. The use of SW algorithm is quite reliable and accurate to estimate the LST derived from Landsat-8 having a mean deviation of only 2.7%, less than standard acceptable of 10%.
Volume: 2
Issue: 1
Page: 221-228
Publish at: 2016-04-01

Induction Motors Stator Fault Analysis based on Artificial Intelligence

10.11591/ijeecs.v2.i1.pp69-78
Hussein Taha Hussein , Mohamed Ammar , Mohamed Moustafa Hassan
This article presents a method for fault detection and diagnosis of stator inter-turn short circuit in three phase induction machines. The technique is based on the stator current and modelling in the dq frame using an Adaptive Neuro-Fuzzy artificial intelligence approach. The developed fault analysis method is illustrated using MATLAB simulations. The obtained results are promising based on the new fault detection approach.
Volume: 2
Issue: 1
Page: 69-78
Publish at: 2016-04-01

Half Iris Matching Based on RED Algorithm

10.11591/ijict.v5i1.pp21-27
Akeel Ali Al-Hillali , Safaa S Omran
Iris recognition is one of the most accurate identification method and it is powerful for secure of information and identification between users. The Ridge Energy Direction (RED) algorithm is the most accurate and fast approach for iris recognition.  The RED algorithm reduces the effects of illumination, since only direction is used. The RED algorithm is applied after a normalization process consisting on two filter types (horizontal and vertical). This paper extends this algorithm by considering the lower portion of the iris because this portion is affected with less noise. We used different size of RED filter on Iris in order to compare the accuracy and time between them. We found that the higher filter size gives more accuracy but more processing time
Volume: 5
Issue: 1
Page: 21-27
Publish at: 2016-04-01

Audio Watermarking Based on Hybrid Low and High Wavelet Frequencies

10.11591/ijict.v5i1.pp28-35
Aree Ali Mohammed
Transform-domain digital audio watermarking has a performance advantage over time-domain watermarking by virtue of the fact that frequency  transforms offer better exploitation of the human auditory system (HAS). In this research paper an adaptive audio watermarking is proposed based on the low and high wavelet frequencies band (LF, HF). The embedded watermark can be of any types of signal (text, audio and image). The insertion of the watermark data is performing in a frequency domain after applying discrete wavelet transformation on the cover audio segments. The normalize correlation and the signal to noise ratio metrics are used to test the performance of the proposed method in terms of the robustness and imperceptibility. Test results show that an improvement of the robustness against some type of attacks when the watermark is adaptively embedded in a different wavelet bands.
Volume: 5
Issue: 1
Page: 28-35
Publish at: 2016-04-01

Nonlinear Dynamics Research between Drill Pipe and Coal Hole Wall during Gas Extraction Drilling

10.11591/ijeecs.v2.i1.pp215-220
Xiaoming Han , Chenxu Luo , Qiangqiang Zhang
This paper analyzes the impact of gas drainage borehole drilling rod vibration phenomena stability.Taking 100m hole depth in underground coal mine as an example, the dynamic simulation analysis of the underground gas drainage drilling rod was carried out by using the ANSYS finite element dynamic analysis module LS-DYNA method.According to the collision course between the drill pipe and the coal hole wall, the Lagrange algorithm is introduced to analyze the stress change of drill pipe in the collision course of 98mm, 108mm, 118mm and 128mm. The failure mechanism of drill pipe fatigue fracture and hole wall instability caused by the collision between drill pipe and coal hole is analyzed. The results show that the stress caused by the impact of drilling speed, drilling pressure and coal hole diameter is larger than that caused by the collision between drill pipe and coal wall.
Volume: 2
Issue: 1
Page: 215-220
Publish at: 2016-04-01

Challenges Over Two Semantic Repositories - OWLIM and AllegroGraph

10.11591/ijeecs.v2.i1.pp194-204
Paria Tajabor , Tara Raafat
The purpose of this research study is exploring two kind of semantic repositories with regards to various factors to find the best approaches that an artificial manager can use to produce ontology in a system based on their interaction, association and research. To this end, as the best way to evaluate each system and comparing with others is analysis, several benchmarking over these two repositories were examined. These two semantic repositories: OWLIM and AllegroGraph will be the main core of this study.  The general objective of this study is to be able to create an efficient and cost-effective manner reports which is required to support decision making in any large enterprise.
Volume: 2
Issue: 1
Page: 194-204
Publish at: 2016-04-01

Perform Measuring by Using Image Processing

10.11591/ijict.v5i1.pp36-44
Sundus Khaleel Ebraheem
The development of ability of the computer leads to improve the abilities of digital image processing, because of the traditional measuring work needs much effort in the site for different fields, and has its difficulties and shortcoming points; therefore this paper introduces improvement for the method to solve the measuring problem, by using digital image processing. This paper improved the system of perform measuring of material for buildings by calculating the volume furthermore the area and dimensions for any position was pointed by the user. The improvement involved in addition to that correction the position of pointed point in case of zooming. The system was designed by using MATLAB R2012b language. The system has implemented on different images and different dimensions as well as on video, it showed accurate results in calculating specific dimensions, areas and volume which defined by the user in the image.
Volume: 5
Issue: 1
Page: 36-44
Publish at: 2016-04-01

Synchronverter Control for Parallel Operation of Cascaded H-Bridge Inverter

10.11591/ijeecs.v2.i1.pp107-114
Amar Hamza , Sara Altahir , Xiangwu Yan
A 21-levels cascaded H-bridge multilevel inverter topology based on three-phase voltage source inverter has been proposed as a superior replacement for conventional two-level in high voltage applications. In this work we have presented the usage of the new technique called virtual synchronous generator based synchronverter model to operate the multilevel inverter as synchronous generator, and to share active and reactive power automatically in case of parallel operated inverters of the same type. Carrier-based PWM is used to control each phase leg of the cascaded H-bridge multilevel inverter. This carrier-based PWM scheme is derived from the carrier phase disposition pulse width modulation strategy. By aid of MATLAB/Simulink package a simulation experiment is established to verify the performance of the proposed technique. 
Volume: 2
Issue: 1
Page: 107-114
Publish at: 2016-04-01
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