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INDONESIA
Bulletin of Electrical Engineering and Informatics
Published by IAES Indonesia Section and Partners
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Electrical & Electronics Engineering
Arjuna Subject : -
Articles 20 Documents
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Search results for , issue "Vol 4, No 3: September 2015" : 20 Documents clear
A Survey on Maximum Power Point Tracking Methods in Photovoltaic Power Systems Dorahaki, Sobhan
Bulletin of Electrical Engineering and Informatics Vol 4, No 3: September 2015
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v4i3.446

Abstract

One of the most important issues associated with photovoltaic systems is receiving maximum power and tracking maximum power point. Hence, researchers have proposed numerous methods in recent years. The first step toward selecting a useful method is recognizing algorithms, methodology and advantages of each method. In this study MPPT methods are deeply investigated. For this purpose, first off, equations governing photovoltaic systems are explicated. Then, nonlinear behavior of photovoltaic cells is demonstrated by simulation. Finally, different methods of MPPT and their advantages are mentioned.
Reduction of Switches and DC Sources in Cascaded Multilevel Inverter Devarajan, N.; Reena, A.
Bulletin of Electrical Engineering and Informatics Vol 4, No 3: September 2015
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v4i3.320

Abstract

Harmonics and increasing number of switches and DC sources for increasing level is the major issue in the cascaded multilevel inverter for the application of medium and high voltage power system applications. In this paper several new techniques are used to reduce the switches and DC sources, which overcome the disadvantages of cascaded multilevel inverter. The THD values for various levels (seven & nine) are compared with and without PWM technique.
Fuzzy Multi-criteria Decision Making associated with Risk and Confidence Attributes Meshram, Chandrashekhar; Agrawal, Shyam Sundar
Bulletin of Electrical Engineering and Informatics Vol 4, No 3: September 2015
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v4i3.441

Abstract

The multicriteria decision problems involve uncertainty, it is important to incorporate different types of uncertainty in any proposed solution. In this paper, we presented fuzzy MCDM approach based on risk and confidence analysis that we believe is effective in tackling complex, ill-defined and human-oriented decision problems.
Multi-stage Fuzzy Power System Stabilizer based on Modified Shuffled Frog Leaping Algorithm Yousefi, Nasser
Bulletin of Electrical Engineering and Informatics Vol 4, No 3: September 2015
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v4i3.450

Abstract

This paper presents a new strategy based on Multi-stage Fuzzy (MSF) PID controller for damping Power System Stabilizer (PSS) in multi-machine environment using Modified Shuffled Frog Leaping (MSFL) algorithm. The proposed technique is a new meta-heuristic algorithm which is inspired by mating procedure of the honey bee. Actually, the mentioned algorithm is used recently in power systems which demonstrate the good reflex of this algorithm. Also, finding the parameters of PID controller in power system has direct effect for damping oscillation. Hence, to reduce the design effort and find a better fuzzy system control, the parameters of proposed controller is obtained by MSFL that leads to design controller with simple structure that is easy to implement. The effectiveness of the proposed technique is applied to Single machine connected to Infinite Bus (SMIB) and IEEE 3-9 bus power system. The proposed technique is compared with other techniques through ITAE and FD.
An Optimization Model of Banking Outlets Integration Based on the Network Comprehensive Analysis Wang, Yong; Zhou, TA
Bulletin of Electrical Engineering and Informatics Vol 4, No 3: September 2015
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v4i3.451

Abstract

The distribution of real banking outlets is based on the establishment of branches according to administrative division, which is obviously not rational in distribution. Against this phenomenon, this paper first analyzes the major factors that affect the distribution of outlets. Then, based on complex network, it puts forward the distribution model of outlets. Finally, it analyzes the model. At the same time, the paper takes the banking outlets of China Construction Bank of Wuxi City, Jiangsu Province for example. It employs the model to distribute and integrate its banking outlets. As a result, the distribution after integrating is more rational than the previous distribution, which verifies the rationality of the model and the distribution method of banking outlets.
The Error Control Methods of Information System in Sensor Networks Wei, Liu; Hua, Lu Xing
Bulletin of Electrical Engineering and Informatics Vol 4, No 3: September 2015
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v4i3.452

Abstract

Information system error discovery took a lot of interests of information system experts. Indeed, this concept has been interpreted in more than one way. This paper describes the connections between 1) the field-to-scope proportion (FSP) and the identifying and managing way of error discovery and 2) the (transmission, influence and implementing) TII model and Error Scope. The main goal of the work described here, is to seek deeper understanding of error discovery in general and, at last, to find easier ways of confirming it. Second, in this paper we try to model the TII evaluating using work expressing system which is relational graph. We also use this process model to present the relationship between error discovery, TII, FSP and error scope. After explaining the relationship between semantic error and error discovery, we improve the relational graph model by adding standard. We then offer instructions of the relational graph.
A Novel Method of Semantic Relatedness Measurements for Word Sense Disambiguation on English AlQuran Abdul-Ameer Mussa, Sarah; Tiun, Sabrina
Bulletin of Electrical Engineering and Informatics Vol 4, No 3: September 2015
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v4i3.455

Abstract

The methods and background introduced in this article concern on the interpretation of the Quranic text in English translation using word sense disambiguation. Three measures of semantic similarity measures: Wu-palmer, Lin and Jiang-Conrath, and their combination  were used to identify words sense on the English Quranic text, in which comparison and detailed evaluation was carried out.  The finding results showed that the Wu–Palmer approach determine the similarity of senses as  the most accurate, followed by the Lin, and Jiang–Conrath.  However, the combination of these measurements (novel method) achieves higher accuracy in comparison with the individual result of each measure before.
Heuristic Approach for Scheduling Dependent Real-Time Tasks Ahmed Awadalla, Medhat Hussein
Bulletin of Electrical Engineering and Informatics Vol 4, No 3: September 2015
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v4i3.457

Abstract

Reducing energy consumption is a critical issue in the design of battery-powered real time systems to prolong battery life. With dynamic voltage scaling (DVS) processors, energy consumption can be reduced efficiently by making appropriate decisions on the processor speed/voltage during the scheduling of real time tasks. Scheduling decision is usually based on parameters which are assumed to be crisp. However, in many circumstances the values of these parameters are vague. The vagueness of parameters suggests that to develop a fuzzy logic approach to reduce energy consumption by determining the appropriate supply-voltage/speed of the processor provided that timing constraints are guaranteed. Intensive simulated experiments and qualitative comparisons with the most related literature have been conducted in the context of dependent real-time tasks. Experimental results have shown that the proposed fuzzy scheduler saves more energy and creates feasible schedules for real time tasks. It also considers tasks priorities which cause higher system utilization and lower deadline miss time.
Model Predictive Control System Analysis for Sugarcane Crushing Mill Process Sunori, Sandeep Kumar; Kumar Juneja, Pradeep; Bhatia Jain, Anamika
Bulletin of Electrical Engineering and Informatics Vol 4, No 3: September 2015
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v4i3.459

Abstract

MPC is a computer based technique that requires the process model to anticipate the future outputs of that process. An optimal control action is taken by MPC based on this prediction. The MPC is so popular since its control performance has been reported to be best among other conventional techniques to control the multivariable dynamical plants with various inputs and outputs constraints. In this paper the performance of an MPC controller on a single stage of milling train of sugar mill is analyzed. A linear model of the plant is taken with flap position and turbine speed set point as manipulated variables and mill torque and buffer chute height as controlled variables. The set point tracking responses are compared for constrained and unconstrained cases. The effect of presence of unmeasured disturbance also is investigated.
Adaptive Robust Control of Variable Speed Wind Turbine Generator Zare, Ahmad; Foroozantabar, Ahmad
Bulletin of Electrical Engineering and Informatics Vol 4, No 3: September 2015
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v4i3.462

Abstract

In this work we want to propose a control strategy to maximize the wind energy captured in a variable speed wind turbines, for this goal the speed of turbine should keep in optimum speed when the wind speed is changing. Many control approach has been suggested that is base on approximate models that it causes unsuitable behavior of system because of Uncertainty parameters of the system. Hence at this work we use adaptive robust control approach that it can to compensate Uncertain of the parameters and present a smooth system with maximum energy production. Numerical simulations are given to illustrate the effectiveness and validity of the proposed approach.

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