Title page for etd-0812114-174842


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URN etd-0812114-174842
Author Yu-Yang Tseng
Author's Email Address maroon541201@hotmail.com
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Department Electrical Engineering
Year 2014
Semester 1
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Design of Resonant Current Control for LLCL-Filter-Based Active Front-End Converter
Date of Defense 2014-07-29
Page Count 87
Keyword
  • LLCL Filter
  • Unbalanced Current Control
  • Active Front-end Converter
  • Positive Sequence Calculation
  • Harmonic Current Suppression
  • Abstract The thesis proposed a resonant current controller in stationary-frame for LLCL-based active front end converter where the LLCL filter can provide switching harmonic current suppression and the grid side inductance decrease. The proposed harmonic current controller suppression harmonic current caused by grid. When the grid unbalanced, the thesis proposed command generator produces three phase current command based on the three phase positive-sequence components of the grid voltage, so the current command can be three-phase balanced. This will prevent grid-side current from triggering the protection relay because of the single-phase over current induced by unbalanced. The data required to operate the proposed control strategy are converter side current, LLCL filter voltage and dc bus voltage. This approach conduct harmonic- and negative-sequence current suppression under distorted and unbalance grid voltage without phase locked loop operation、positive/negative sequence frame transformation nor coupling network. This is the significant advantage to decrease the computing effort and control complexity. The theoretical is validated by means of experimental results from laboratory platform of the proposed active front end converter.
    Advisory Committee
  • Perng, Jau-Woei - chair
  • Chin-Sien Moo - co-chair
  • Jen-Hao Teng - co-chair
  • Tzung-Lin Lee - advisor
  • Files
  • etd-0812114-174842.pdf
  • Indicate in-campus at 5 year and off-campus access at 99 year.
    Date of Submission 2014-09-12

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