Journal of Electrical and Electronic Engineering

Volume 10, Issue 4, August 2022

  • Techno-Economic Analysis of Harmonic Disturbances in a University Environment - A Case Study at the University of Cape Coast

    Joseph Cudjoe Attachie, Benedict Addo-Yeboa

    Issue: Volume 10, Issue 4, August 2022
    Pages: 128-141
    Received: Jun. 27, 2022
    Accepted: Jul. 15, 2022
    Published: Jul. 22, 2022
    DOI: 10.11648/j.jeee.20221004.11
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    Abstract: This research investigates the adverse impact of harmonic disturbances present in distribution substations on the electrical installations and distribution network of the University of Cape Coast in economic terms. Power quality analyser using the “very-short time” monitoring duration and referenced against the IEEE 519-2014 harmonics standard was ... Show More
  • Fiber Fuse Simulation in Dispersion-Shifted Fibers

    Yoshito Shuto

    Issue: Volume 10, Issue 4, August 2022
    Pages: 142-148
    Received: Jul. 10, 2022
    Accepted: Jul. 22, 2022
    Published: Jul. 29, 2022
    DOI: 10.11648/j.jeee.20221004.12
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    Abstract: Silica-based optical fibers are the most important transmission medium for long-distance and large-capacity optical communication systems. The most distinguished feature of optical fiber is its low loss characteristics. A single-mode optical fiber (SMF) exhibits a very low transmission loss (0.142 dB/km) at 1.55 μm. Together with such low loss char... Show More
  • Feedback Modelling in Amplifier Circuits Using Open-Loop Transfer Functions

    Spyros Loutridis

    Issue: Volume 10, Issue 4, August 2022
    Pages: 149-157
    Received: Jul. 10, 2022
    Accepted: Jul. 25, 2022
    Published: Jul. 29, 2022
    DOI: 10.11648/j.jeee.20221004.13
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    Abstract: Negative feedback is an established technique used to improve the quality of an amplifier. The modelling of the closed-loop circuit is a complex procedure that, if not done properly, may give erroneous results. A new method for modelling amplifiers that use negative feedback over a broad frequency range is presented. The method overcomes the main d... Show More
  • Compact Feeding Circuit for an Antenna That Achieves Three-Way Switchable Beam Directions Using Lumped Parameter Elements

    Masatoshi Tsuji, Kota Motozuka

    Issue: Volume 10, Issue 4, August 2022
    Pages: 158-161
    Received: Aug. 08, 2021
    Accepted: Aug. 24, 2021
    Published: Aug. 17, 2022
    DOI: 10.11648/j.jeee.20221004.14
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    Abstract: There have been a number of studies on phased array antennas and adaptive antennas as directional antennas that can be scanned electronically. However, these antenna systems require expensive phase shifters and power controllers, and their construction is complex. Small and relatively inexpensive antenna system, in which the beam is scanned or the ... Show More
  • Fiber Fuse Simulation in Multi-Core Fibers for Space Division Multiplexed Transmission

    Yoshito Shuto

    Issue: Volume 10, Issue 4, August 2022
    Pages: 162-169
    Received: Aug. 07, 2022
    Accepted: Aug. 23, 2022
    Published: Aug. 31, 2022
    DOI: 10.11648/j.jeee.20221004.15
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    Abstract: Owing to the progress of dense wavelength-division multiplexing (WDM) technology using an optical-fiber amplifier, we can exchange large amounts of data at a rate of 100 Tbit/s class over several hundred kilometers. However, it is widely recognized that the maximum transmission capacity of a single strand of fiber is rapidly approaching its limit o... Show More
  • Design and Analysis a 36-Pulse Rectifier to Improve the High-Voltage Harmonic Distortion Rate Under 5% in MRT Systems

    Chien Hsu Chen, Sheng Chieh Huang

    Issue: Volume 10, Issue 4, August 2022
    Pages: 170-179
    Received: Aug. 09, 2022
    Accepted: Aug. 25, 2022
    Published: Aug. 31, 2022
    DOI: 10.11648/j.jeee.20221004.16
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    Abstract: I have served the Taipei MRT Bureau over than 25 years, and the inductive current harmonics affect the MRT power system, causing the train to malfunction and shorten its service life. Therefore, I am interested in solving this problem. The traditional solution is to use RLC high-pass filter. Its disadvantage is that it will reduce the power of the ... Show More