Journal of Electrical and Electronic Engineering

Volume 3, Issue 6, December 2015

  • Low Power Parallel Prefix Adder Design Using Two Phase Adiabatic Logic

    Alireza Hassanzadeh, Ahmad Shabani

    Issue: Volume 3, Issue 6, December 2015
    Pages: 181-186
    Received: 24 October 2015
    Accepted: 06 November 2015
    Published: 07 December 2015
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    Abstract: In this paper low power implementation of parallel prefix adders using two phase adiabatic logic has been investigated. A new structure has been proposed for the main blocks of parallel prefix adder. Three parallel prefix adders including Kogge-Stone, Brent-Kung and Ripple Carry have been considered. The effects of power clock frequency and loading... Show More
  • Evaluation of Resistance Type SFCL on Reduction of Destructive Effects of Voltage Sag on Synchronous Machine Stability

    Behrouz Alfi, Tohid Banki, Faramarz Faghihi

    Issue: Volume 3, Issue 6, December 2015
    Pages: 187-191
    Received: 03 November 2015
    Accepted: 13 November 2015
    Published: 07 December 2015
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    Abstract: Electrical power quality has become an essential part of power systems and electrical machines. True identifying and regarding power quality and how to check the related destructive points are of utmost importance. Most of the time, providing the quality of power for sensitive load which requires the voltage to maintain a sinusoidal waveform at rat... Show More
  • A Compact Model of Mosfet Transistors Including Dispersion and Thermal Phenomena

    Mohamed Ali Belaïd, Ahmed Mohammad Nahhas, Momamed Masmoudi

    Issue: Volume 3, Issue 6, December 2015
    Pages: 192-197
    Received: 24 August 2015
    Accepted: 16 September 2015
    Published: 07 December 2015
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    Abstract: This paper propose a new electro-thermal model nd presents a method of studying the thermal phenomena in power MOSFET transistors, utilizing Advanced Design System techniques by a Symbolic Defined Device (SDD). The model incorporates the thermal effects and the temperature evolution in the device and captures the heat dissipation from the silicon c... Show More
  • Risk Based Management Methods for Maintaining 750 kV Electricity Grid in Northwest China

    Li Juan, Liang Naifeng, Zhao Puzhi, Zhou Erbiao, Li Xiaoguang

    Issue: Volume 3, Issue 6, December 2015
    Pages: 198-201
    Received: 11 December 2015
    Accepted:
    Published: 11 December 2015
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    Abstract: This paper will discuss a different case - a 750 kV transmission grid in China, in which the regulation rules have not been decided and the assets are operating in their early stage. The difficulty in technology and insufficiency of regulation decide the focus of this study: to select the method feasible in this business environment, rather than to... Show More
  • Considerations on Developing a Chainsaw Intrusion Detection and Localization System for Preventing Unauthorized Logging

    Valentin Andrei, Horia Cucu, Lucian Petrică

    Issue: Volume 3, Issue 6, December 2015
    Pages: 202-207
    Received: 03 December 2015
    Accepted: 11 December 2015
    Published: 25 December 2015
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    Abstract: This work presents a system designed to prevent unauthorized logging by detecting and locating chainsaw sound sources. We analyze the specifics of chainsaw related sounds and discuss about the possible approaches for classifying the input sounds. The work also highlights several approaches for sound source localization that can be used in wireless ... Show More
  • Diagnosis of Water Tree Aging in XLPE Cable by the Loss Current Harmonic Component Under Variable Frequency Power

    Chen Jie, Li Hongze, Zhou Li, Hu Libin, Li Chenying, Cao Jingying

    Issue: Volume 3, Issue 6, December 2015
    Pages: 208-214
    Received: 08 January 2016
    Accepted:
    Published: 09 January 2016
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    Abstract: Water treeing is one of the main aging in XLPE cable insulation, which has the direct effect on the reliability of cable long-term operation. The diagnosis of water tree aging is a premise to ensure the safe operation of cables. The water treed XLPE insulation shows a nonlinear conductivity characteristic, which leads to a harmonic component in the... Show More