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Bulletin of Electrical Engineering and Informatics
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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.
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Articles 15 Documents
Search results for , issue "Vol 5, No 1: March 2016" : 15 Documents clear
Leakage Immune 9T-SRAM Cell in Sub-threshold Region Priya Gupta; Anu Gupta; Abhijit Asati
Bulletin of Electrical Engineering and Informatics Vol 5, No 1: March 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (521.603 KB) | DOI: 10.11591/eei.v5i1.557

Abstract

The paper presents a variability-aware modified 9T SRAM cell. In comparison to 6T SRAM cell the proposed  cell achieves 1.3× higher read-SNM and 1.77× higher write-SNM with 79.6% SINM (static current noise margin) distribution at the expense of 14.7× lower WTI (write trip current) at 0.4 V power supply voltage, while maintaining similar stability in hold mode. Thus, comparative analysis exhibits that the proposed design has a significant improvement, thereby achieving high cell stability at 45nm technology.
Substrate Current Evaluation for Lightly and Heavily Doped MOSFETs at 45 nm process Using Physical Models Sanjay Sharma; R. P. Yadav; Vijay Janyani
Bulletin of Electrical Engineering and Informatics Vol 5, No 1: March 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (673.198 KB) | DOI: 10.11591/eei.v5i1.556

Abstract

Substrate noise is a major integration issue in mixed signal circuits; particularly at radio frequency (RF) it becomes a key issue. In deep sub micron MOSFETs hot carrier effect induces device degradation. The impact ionization phenomenon is one of the main hot carrier effects. The paper covers the process and device level simulation of MOSFETs by TCAD and the substrate current comparison in lightly and heavily doped MOS. PMOS and NMOS devices are virtually fabricated with the help of ATHENA process simulator. The modeled devices include the hot carrier effects. The MOS devices are implemented on lightly and heavily doped substrates and substrate current is evaluated and compared with the help of ATLAS device simulator. Substrate current is better in lightly doped substrate than in heavily doped one. Drain current is also better in lightly doped than heavily doped substrates. Silvaco TCAD Tool is used for Virtual fabrication and simulation. ATHENA process simulator is used for virtual fabrication and ATLAS device simulator is used for device characterization.
Comparative Analysis of DITC Based Switched Reluctance Motor Using Asymmetric Converter and Four-Level Converter P. Srinivas; K. Amulya
Bulletin of Electrical Engineering and Informatics Vol 5, No 1: March 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (743.534 KB) | DOI: 10.11591/eei.v5i1.555

Abstract

High torque ripple is the main draw of Switched Reluctance Motor (SRM) compared to other conventional motor. Torque ripples can be minimized by Direct Instantaneous Torque Control (DITC) technique. DITC responds against the torque error instantaneously by using hysteresis torque controller and regulate the torque output of the motor within hysteresis band.This paper compares the performance of Switched Reluctance Motor in terms of torque ripples with DITC strategy for both Asymmetric converter and Four-level converter. Asymmetric converter has three states namely magnetization, freewheeling and demagnetiztion states. With four-level converter, fast magnetization and fast demagnetization are also possible. Thus, the current build up and decay time is reduced which improves the dynamic performance. SRM is simulated using DITC scheme with Asymmetric converter and Four-level converter in MATLAB/SIMULINK to analyze torque ripples and it is observed that DITC with four level converter is better than that with Assymetrical converter.
Regime Analysis of Critical Raindrop Diameters for Rainfall Attenuation in Southern Africa O Adetan; OO Obiyemi
Bulletin of Electrical Engineering and Informatics Vol 5, No 1: March 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (678.586 KB) | DOI: 10.11591/eei.v5i1.554

Abstract

The influence of critical raindrop diameters on the specific rainfall attenuation in Durban (29o52'S, 30o58'E), South Africa using various rainfall regimes is analyzed in this paper. Different rain rate values representing drizzle, widespread, shower and thunderstorm are selected for the purpose of analysis over the measured raindrop size distribution. The three-parameter lognormal and gamma DSD models with shape parameter of 2 are used to estimate the parameters required to investigate the drop sizes which produce a major contribution to the total specific rainfall attenuation for the selected rain rate values. The computed total specific attenuation increases with increasing frequencies and rain rates. The highest and prevailing contribution to the specific attenuation occurs at for the stratiform (drizzle or widespread) and convective (shower or thunderstorm) rain types for the models considered. The total percentage fraction formed by drops in the diameter range 0.5 mm ≤ D ≤ 2.5 mm and 1.0 mm ≤ D ≤ 3.0 mm are found to be most critical for the specific rain attenuation for the stratiform (drizzle and widespread)  and convective (shower and thunderstorm) rainfall types especially at higher frequencies.
Bright Lesion Detection in Color Fundus Images Based on Texture Features Ratna Bhargavi V; Ranjan K. Senapati
Bulletin of Electrical Engineering and Informatics Vol 5, No 1: March 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (563.625 KB) | DOI: 10.11591/eei.v5i1.553

Abstract

In this paper a computer aided screening system for the detection of bright lesions or exudates using color fundus images is proposed. The proposed screening system is used to identify the suspicious regions for bright lesions. A texture feature extraction method is also demonstrated to describe the characteristics of region of interest. In final stage the normal and abnormal images are classified using Support vector machine classifier. Our proposed system obtained the effective detection performance compared to some of the state–of–art methods.
Organic Thin Film Transistor with Carbon Nanotube Electrodes Kianoosh Safari; Ali Rafiee; Hamidreza Dalili Oskouei
Bulletin of Electrical Engineering and Informatics Vol 5, No 1: March 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (285.567 KB) | DOI: 10.11591/eei.v5i1.552

Abstract

The contact resistance between organic semiconductors and metallic electrodesaffectsthe performance of the organic thin film transistor (OTFT) negatively so that it may make thefield effect mobility of charge carrier seem small. In order to reduce the contact resistance weused conducting Carbon Nanotube (CNT) films, which consist of the same element as the basicmaterial of the organic semiconductors, as source or drain electrodes. The measurements oftransistor properties based on pentacene single crystals have been carried out by using both CNTfilm electrodes and metal electrodes
Organic Semiconductor and Transistor Electrical Characteristic Based on Carbon Nanotubes Kianoosh Safari; Ali Rafiee; Hamidreza Dalili Oskouei
Bulletin of Electrical Engineering and Informatics Vol 5, No 1: March 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (881.719 KB) | DOI: 10.11591/eei.v5i1.551

Abstract

We show that the performance of pentacene transistors can be significantly improved by maximizing the interfacial area at single walled carbon nanotube (SWCNT)/pentacene. The interfacial areas are varied by anchoring short SWCNTs of different densities (0-30/μm) to the Pd electrodes. The mobility average is increased three, six and nine times for low, medium and high SWCNT densities, respectively, compared to the devices with zero SWCNT. The current on-off ratio and on-current are increased up to 40 times and 20 times with increasing the SWCNT density. We explain the improved device performance using reduced barrier height of SWCNT/pentacene interface.
Design of Filter Using MOS Current Mode Logic J Princy Joice; M Anitha; I Rexlin Sheeba
Bulletin of Electrical Engineering and Informatics Vol 5, No 1: March 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (393.426 KB) | DOI: 10.11591/eei.v5i1.550

Abstract

MCML (MOS Current Mode Logic) is a method used for the purpose of reducing the delay and power of the circuit. In high speed application this method is used to reduce the power. In this method the sleep transistor is inserted in series with the supply voltage (or) current source to reduce the power. Different power gating techniques are been used to reduce the static power and to improve the speed and efficiency of the circuit. In this paper, the filter can be designed by using MCML logic. The fourth order band pass filter by using MCML logic is introduced. In order to reduce the power and delay this method is proposed.
Basis Weight Gain Tuning Using Different Types of Conventional Controllers Chandani Sharma; Anamika Jain
Bulletin of Electrical Engineering and Informatics Vol 5, No 1: March 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (685.402 KB) | DOI: 10.11591/eei.v5i1.522

Abstract

Paper making is a vast, multidisciplinary technology that has expanded tremendously in recent years approaching to reach 20 million tons by 2020. As per demand implementation of necessary tools to optimize papermaking process and to increase the control precision, the precondition for stable operation and quality production is necessary. In the present work, an effort has been made to analyse gain tuning of Basis Weight output relative to the changing values of basis weight valve opening with step and variable input. The effects of the three constants KP, KD and KI for different types of conventional controllers as P, PD and PID controller are examined by adding a disturbance to the control system. The effects of various scaling gains are studied on the output of the system and are tuned to get the optimum output both for the step input as well as the varying input. Simulation results show that P, PD and PID controllers provide automatic tuning to preserve good performance for various operating conditions. An analysis of practical performance indices is presented by comparing results of three different conventional controllers. The system developed can be used to serve as platform for Control engineering techniques used in industries.
Application of PEM Fuel Cell for Stand-alone Based on a Fuzzy PID Control SM Rakhtala; E Shafiee Roudbari
Bulletin of Electrical Engineering and Informatics Vol 5, No 1: March 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (954.802 KB) | DOI: 10.11591/eei.v5i1.521

Abstract

Due to increasing concerns on environmental pollution and depleting fossil fuels, fuel cell (FC) has received considerable attention as an alternative to the conventional energy systems. Fuel cells have numerous stand-alone and grid-connected applications. This paper presents the control of the stand-alone application based on fuzzy PID (FPID) controller. The aim of the paper is to achieve the control of the fuel cell for stand-alone with suitable power conditioning unit (PCU) that consists of the two stages of DC/DC converter and DC/AC inverter. An analysis of cascade structure based on FPID controller for a single phase inverter is done and comprises two feedback control loops. The inductor current and capacitor voltage are measured and feedback to the inner loop and the outer loop, respectively. The analytical models of the h PEM fuel cells is designed and simulated by developing a detailed simulation software using Matlab, Simulink and SimPowerSystems Blockset for portable applications. The PEM fuel cell model is validated with NexaTM Power Module MAN5100078 by Ballard Power Systems at 80°C. In this paper shown that the proposed controller shows a robust behavior and good transient response.

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