Title page for etd-0703118-000021


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URN etd-0703118-000021
Author Yu-Jun Zheng
Author's Email Address No Public.
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Department Institute Of Electrical Engineering
Year 2018
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title An AC/AC Buck Inverter with Three-Step Current Commutation for Series Dynamic Voltage Regulator
Date of Defense 2018-06-15
Page Count 60
Keyword
  • dynamic voltage regulator
  • Buck converter
  • AC/AC step-down inverter
  • voltage sag
  • three-step current commutation
  • Abstract This thesis derives the relationship between input and output of the AC/AC step-down inverter from the traditional Buck converter as the prototype. To suppress the surge voltage on inductor and IGBTs during the commutation of inductor current, this thesis analyzes the current loop of inductor and uses the three-step current commutation. While voltage fluctuation of system is happened, the controller compensates voltage by ac/ac inverter as the dynamic voltage regulator.
    Experiment tests are carried out by the laboratory prototype with ac/ac inverter. Using the programmable ac source to simulate voltage sag of system. Experimental results show that the dynamic voltage regulator can compensate load voltage and fix it to the nominal voltage in different load characteristics and power factors. Besides, it can suppress the surge voltage on inductor and IGBTs effectively.
    Advisory Committee
  • Jau-Woei Perng - chair
  • Yao-Ching Hsieh - co-chair
  • Jen-Hao Teng - co-chair
  • Tzung-Lin Lee - advisor
  • Files
  • etd-0703118-000021.pdf
  • Indicate in-campus at 3 year and off-campus access at 3 year.
    Date of Submission 2018-08-03

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