Bulletin of Electrical Engineering and Informatics
Bulletin of Electrical Engineering and Informatics (Buletin Teknik Elektro dan Informatika) ISSN: 2089-3191, e-ISSN: 2302-9285 is open to submission from scholars and experts in the wide areas of electrical, electronics, instrumentation, control, telecommunication and computer engineering from the global world. The journal publishes original papers in the field of electrical, computer and informatics engineering.
Articles
83
Articles
Two Parameter Controller for a Single Machine Infinite Bus System

Narasimha Raja, Ch. Varaha ( Anil Neerukonda institute of technology Science )

Bulletin of Electrical Engineering and Informatics Vol 3, No 1: March 2014
Publisher : Universitas Ahmad Dahlan

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Abstract

This paper shows the application of two parameter  controller with internal-Model principle to a single machine- infinite bus system (SMIB), to achieve design specifications and disturbance rejection. In the two parameter model the feedback- compensator is used to achieve required transient response by pole placement and input compensator is used to achieve required steady state response. Finally this method concludes that the method is systematic, general and yields good results.

A Hybrid Hardware Verification Technique in FPGA Design

Firouzabadi, Mojtaba.Dehghani ( Azad University of Meybod ) , Heidari, Hossein ( Azad University of Meybod )

Bulletin of Electrical Engineering and Informatics Vol 3, No 1: March 2014
Publisher : Universitas Ahmad Dahlan

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Abstract

Assertion-based verification (ABV) is best emerging technique for verification of industrial hardware. Property Specification Language (PSL) is one of the most important components of ABV. In this paper we present a method to emulate hardware that is capable of support ABV that in it assertion expressions mapped to HDL. We simulated this method by an applicable example by Modelsim software. Test results indicate that this method performance is good.

Improved Dynamic Response of Buck Converter using Fuzzy Controller

Kiran, Nagulapati ( Anil Neerukonda Institute of Technology and Sciences ) , Raja, Ch Varaha Narasimha ( Anil Neerukonda Institute of Technology and Sciences )

Bulletin of Electrical Engineering and Informatics Vol 3, No 1: March 2014
Publisher : Universitas Ahmad Dahlan

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Abstract

This paper presents comparative performance of Buck Converter in both open as well as closed loop. With the help state equations Mathematical Model of Buck Converter is designed in MATLAB/SIMULINK. The obtained output response of open loop Buck Converter is sluggish, not optimum and consists of peak overshoots. PI Controller is used in closed loop model of Buck Converter. Output Voltage is compared with a reference signal, which then is processed through a controller (PI/Fuzzy). The obtained signal is superimposed with a carrier signal and given to switching device used. To further optimize the performance of Buck Converter and eliminate the peak overshoot present in output response, Fuzzy controller is used. Here Suguno type Fuzzy is used.

A Genuine Random Sequential Multi-signature Scheme

Tang, Yonglong ( Jishou University )

Bulletin of Electrical Engineering and Informatics Vol 3, No 1: March 2014
Publisher : Universitas Ahmad Dahlan

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Abstract

The usual sequential multi-signature scheme allows the multi-signers to sign the document with their own information and sequence, and the signature is not real random and secure. The paper analyzes the reasons for the insecurity of the previous multi-signature scheme, and puts forward a Genuine Random Sequential Multi-signature Scheme based on The Waters signature scheme, and the experiment proves that this scheme is a good scheme suitable for the practical application with high computing efficiency.

Using HBMO Algorithm to Optimal Sizing & Sitting of Distributed Generation in Power System

Ghadimi, Noradin ( Islamic Azad University )

Bulletin of Electrical Engineering and Informatics Vol 3, No 1: March 2014
Publisher : Universitas Ahmad Dahlan

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Abstract

This paper analyzes of HBMO placement method efficiency in comparison with PSO and GA in order to sizing and sitting of distributed generation in distribution power system. These algorithms for optimization in this paper is tested on IEEE 33 bus reconfigured test system. The proposed objective function considers active power losses and the voltage profile in nominal load of system. In order to use of optimization algorithms, at first, placement problem is written as an optimization problem which includes the objective function and constraints, and then to achieve the most desirable results, Optimization methods is applied to solve the problem. High performance of the proposed algorithm in mention system is verified by simulations in MATLAB software and in order to illustrate of feasibility of proposed method will accomplish.

Indirect Vector Control of Three Phase Induction Motor using PSIM

Kiran, Nagulapati ( Anil Neerukonda Institute of Technology and Sciences )

Bulletin of Electrical Engineering and Informatics Vol 3, No 1: March 2014
Publisher : Universitas Ahmad Dahlan

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Abstract

This paper presents the implementation of indirect vector control of three phase Induction Motor using Hysteresis Band PWM current control and Synchronous Current Control in PSIM environment. In any machine drive system, current control directly influences both flux and torque developed directly. In Hysteresis current control method, actual current tracks the command current within a hysteresis band. There is no difficulty in current control tracking when CEMF is low, but at higher speeds, current controller gets saturated due to higher CEMF and hense becomes difficult to track due to which there will be a phase lag with respect to command current. All such problems are solved using Synchronous Current Control. 

Sliding Mode Control of Buck Converter

Kiran, Nagulapati ( Anil Neerukonda Institute of Technology and Sciences )

Bulletin of Electrical Engineering and Informatics Vol 3, No 1: March 2014
Publisher : Universitas Ahmad Dahlan

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Abstract

DC-DC converters are used to convert DC voltage from one level to other. These converters are drastically used in industry as well as in research. One of the main limitations of these converters is unregulated supply of voltage and current. To overcome these problems there are various control techniques. This paper presents two such methods. This paper compares dynamic performance of buck Converter using PID controller and Sliding mode controller. Simulation of PI and Sliding mode control of Buck Converter is carried out in MATLAB SIMULINK.

Management of Urban Parking Lot Energy Efficiency with the Application of Wind Turbine and LED lights

Yuksek, Bekir Z ( University of Northern Iowa ) , Dakeev, Ulan ( University of Michigan-Flint )

Bulletin of Electrical Engineering and Informatics Vol 3, No 1: March 2014
Publisher : Universitas Ahmad Dahlan

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Abstract

A study of a parking lot lighting of a large manufacturing company in Iowa was implemented to evaluate monthly energy consumption. Mercury light bulbs with 227W ratings on the light poles were replaced with low power energy efficient LEDs to increase the overall efficiency. Additionally, a small scale wind turbine was installed to supply power to experimental light poles. Migration from the current gas bulbs to the LED light results yielded about 60% energy savings, while capital gains due to the generation of wind energy returned about 80% savings per month which recovered initial investments on the assets. The environmental impact of this study cannot be neglected and it also provided opportunity for STEM education in colleges and wind energy awareness in the society in Iowa by showing benefits from current experiments. Details of the methods and analyses should be particularly useful to urban planners because they show how standard references on investment in automobile parking should be modified to include efficient energy management. The authors proposed new way to limit the cost of energy consumptions and environmental pollution on wildlife and human health. Research implications are discussed in terms of the impact of natural features in urban areas for reduction of green house gas emissions and promoting alternative energy sources.

Analysis and Design of innovative Double H Metamaterial Structure for Amelioration in Patch Antenna Parameters

Garg, Bimal ( Madhav Institute of Technolgy & Science ) , Saleem, Dauood ( Madhav Institute of Technolgy & Science )

Bulletin of Electrical Engineering and Informatics Vol 3, No 1: March 2014
Publisher : Universitas Ahmad Dahlan

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Abstract

A rectangular microstrip patch antenna along with a SSRR based ??Double H? shaped metamaterial is proposed and analyzed at a height of 3.2mm from the ground plane. This work is mainly focused on increasing the potential parameters of microstrip patch antennas. The patch antenna along with the proposed metamaterial structure is designed to resonate at 1.84GHz. The impedance bandwidth of the patch antenna along with the proposed metamaterial structure is improved by 12.9MHz and return loss is reduced by 9.89dB. All the simulation work is done by using CST-MWS Software. Double-Negative properties (Negative Permeability and Permittivity) of the proposed metamaterial structure have also been verified using Nicolson-Ross-Weir method (NRW).

Adaptive E-Learning Based on Learners Styles

M. El-Bakry, Hazem ( Mansoura University ) , A. Saleh, Ahmed ( Mansoura University )

Bulletin of Electrical Engineering and Informatics Vol 2, No 4: December 2013
Publisher : Universitas Ahmad Dahlan

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Abstract

In this paper, a new model for adaptive e-learning based on learners styles is presented. In the previous work, the dimensions of learners styles given by Felder-Silverman did not consider some important issues of the learner himself. Here, new learners parameters such as his social environment, health conditions, psychological and economical states are taken into account. Such parameters greatly affect the ability of student to learn and understand. Therefore, in order to perfectly recognize the ability of the student to be interactive in the leaning environment and accept information, new learners styles are added to the dimensions of Felder-Silverman learning style model and our previous work [24]. The new proposed model is applied for logic gates and functions used in data encoding and computer networks. Such model presents suitable courses for each student in a dynamic and adaptive manner using existing database and workflow technologies. Furthermore, it is powerful, user friendly and easy to interpret. Moreover, it suggests a learning strategy and appropriate electronic media that match the learner??s preference.