Title page for etd-1017115-111329


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URN etd-1017115-111329
Author Po-Hsiang Wen
Author's Email Address No Public.
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Department Electrical Engineering
Year 2015
Semester 1
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title A High-Power-Factor AC-to-DC Converter with Power Decoupling
Date of Defense 2015-11-05
Page Count 54
Keyword
  • power decoupling
  • power factor correction
  • boost conversion
  • electrolytic capacitor
  • energy regulating tank
  • Abstract A novel power-factor-correction (PFC) circuit based on boost conversion with
    power decoupling is proposed to prolong the lifetime of electronic circuits by excluding
    the electrolytic capacitor. An inductor with two active power switches is used as an
    energy regulating tank for storing the energy from the ac input at the higher voltages
    and releasing it at the lower voltages to accomplish the functions of PFC and voltage
    regulation.
    Theoretical analyses and computer simulations of the proposed PFC circuit are
    made to derive the design equations for the inductor and duty-ratios of the active power
    switches. A laboratory circuit is designed for the output ratings of 157 W and 225 V at
    an input voltage range from 90 V to 130 V. The power decoupling algorithm for
    controlling the duty-ratios of the active power switches is realized by a microcontroller.
    Experimental results demonstrate that the PFC circuit with a metalized film capacitor as
    the output filter can achieve an input power factor higher than 0.99 and a total harmonic
    distortion (THD) less than12% at the designated operating range with a ripple factor of
    18.83%
    Advisory Committee
  • Hung-Liang Cheng - chair
  • Shiang-Hwua Yu - co-chair
  • Tzung-Lin Lee - co-chair
  • Chin-Sien Moo - advisor
  • Files
  • etd-1017115-111329.pdf
  • Indicate in-campus at 2 year and off-campus access at 5 year.
    Date of Submission 2015-11-17

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