Impedance modeling of DFIG-wind turbine system

Xiaozhong Liao, Hang Sun, Zhen Li, Siu Chung Wong, Li Tian, Miaoyuan Wang, Xiangdong Liu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

The DFIG-wind turbine, can create the potential instability to the existent power grid, equivalently presenting itself as a random voltage source with its dynamic impedance, which has the implicit and varying electrical characteristics with the changeable rotor speed. Thus, it inevitably leads to the mutual interaction between DFIG-wind turbines themselves and dynamic custom loads. This paper studies the closed-form impedance analysis of a practical DFIG-wind turbine system. A small-signal model of the DFIG system in the dq-frame is developed with respect to discrete rotor speeds using the impedance-based approach. Moreover, a practical testing method is adopted to facilitate the verification of the impedance modeling.
Original languageEnglish
Title of host publication2015 IEEE International Symposium on Circuits and Systems, ISCAS 2015
PublisherIEEE
Pages245-248
Number of pages4
Volume2015-July
ISBN (Electronic)9781479983919
DOIs
Publication statusPublished - 1 Jan 2015
EventIEEE International Symposium on Circuits and Systems, ISCAS 2015 - Lisbon, Portugal
Duration: 24 May 201527 May 2015

Conference

ConferenceIEEE International Symposium on Circuits and Systems, ISCAS 2015
CountryPortugal
CityLisbon
Period24/05/1527/05/15

Keywords

  • Doubly fed induction generator (DFIG)
  • impedance modeling
  • wind turbine

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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