Mitigation of subsynchronous control interaction in series-compensated DFIG-based wind farms using a nonlinear partial feedback linearizing controller

M. A. Chowdhury, M. A. Mahmud

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

3 Citations (Scopus)

Abstract

Subsynchronous control interaction (SSCI) is a fast growing electrical interaction between series-compensated transmission lines and power electronic converters of DFIGs that may destroy the machines if not prevented. Thus, a nonlinear controller is proposed in order to mitigate SSCI in series-compensated doubly-fed induction generator (DFIG)-based wind farms. Partial feedback linearization technique is utilized in developing the controller that involves a number of design steps. To evaluate the performance of the proposed controller, eigenvalue (modal) analysis and electromagnetic transient (EMT) simulation are performed on a 100 MW DFIG-based offshore wind farm connected to the grid through series-compensated lines. Eigenvalue study reveals the presence of several unstable subsynchronous modes with the PI controller while the system mostly retains stability with the use of the designed Partial feedback linearizing (PFL) controller unless the compensation level is too high (above 90%). EMT simulation, on the other hand, shows that the prevalent SSCI in the system with the PI controller is effectively damped through the use of the designed PFL controller in less than 2.3 s.

Original languageEnglish
Title of host publication2016 IEEE Innovative Smart Grid Technologies - Asia, ISGT-Asia 2016
Place of PublicationPiscataway, NJ
PublisherIEEE
Pages335-340
Number of pages6
ISBN (Electronic)9781509043033
DOIs
Publication statusPublished - 1 Dec 2016
Externally publishedYes
Event2016 IEEE Innovative Smart Grid Technologies - Asia, ISGT-Asia 2016 - Melbourne, Australia
Duration: 28 Nov 20161 Dec 2016

Publication series

NameIEEE PES Innovative Smart Grid Technologies Conference Europe

Conference

Conference2016 IEEE Innovative Smart Grid Technologies - Asia, ISGT-Asia 2016
Country/TerritoryAustralia
CityMelbourne
Period28/11/161/12/16

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