Application of a Parallel Virtual Infinite Capacitor to DC-link Voltage Filtering for a Doubly Fed Induction Wind Generator

Shuyue Lin, Xin Tong, Xiaowei Zhao, George Weiss

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We propose a parallel virtual infinite capacitor (PVIC) concept to replace the DC-link capacitor between two back-to-back converters for a DFIG (doubly fed induction generator) wind turbine for voltage filtering. The PVIC is composed of two virtual infinite capacitors (VICs) sharing one common capacitor: A LF (low-frequency)-VIC and a HF (high-frequency)-VIC. The LF-VIC is controlled by a sliding mode controller to regulate low-frequency component of the DC-link voltage around its reference. We use a PI controller to maintain this VIC's state of charge in its desired operating range and achieve the 'plug-and-play' pattern of PVIC. The HF-VIC is controlled by another sliding mode controller to suppress high-frequency ripples of the DC-link voltage and simultaneously keep the VIC in its desired operating range. The simulation study indicates that PVIC performs much better than the equivalent DC-link capacitor in limiting the DC-link voltage fluctuations under different grid conditions.

Original languageEnglish
Title of host publicationProceedings - 2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538651858
DOIs
StatePublished - 16 Oct 2018
Event2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2018 - Palermo, Italy
Duration: 12 Jun 201815 Jun 2018

Publication series

NameProceedings - 2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2018

Conference

Conference2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2018
Country/TerritoryItaly
CityPalermo
Period12/06/1815/06/18

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering
  • Environmental Engineering
  • Hardware and Architecture

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