Analysis and Mitigation of SSCI in DFIG Systems with Experimental Validation

Muhammad Taha Ali*, Dao Zhou, Yipeng Song, Mehrdad Ghandhari, Lennart Harnefors, Frede Blaabjerg


Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

1 Citationer (Scopus)


Sub-synchronous oscillations (SSOs) in doubly-fed induction generator (DFIG)-based series compensated power systems are mainly caused by sub-synchronous control interaction (SSCI). SSCI is the most recently found type of sub-synchronous resonances. In this article, SSCI is elaborated and investigated by performing eigenvalue analysis on a mathematically modeled DFIG system. The occurrence of SSCI is observed and the results of eigenvalue analysis are validated through a down-scaled 7.5-kW experimental setup of a grid-connected DFIG. Based on the analysis, the proportional control parameters of the rotor-side converter (RSC) are found to be very sensitive towards the sub-synchronous modes of the system. The results obtained from both the simulation and the experimental analysis show that if the sensitive proportional parameters of the RSC are tuned properly, then the DFIG system can become immune to the SSCI for any level of series compensation.

TidsskriftIEEE Transactions on Energy Conversion
Udgave nummer2
Sider (fra-til)714-723
Antal sider10
StatusUdgivet - jun. 2020

Bibliografisk note

Funding Information:
Manuscript received May 22, 2019; revised September 18, 2019 and November 13, 2019; accepted November 13, 2019. Date of publication November 18, 2019; date of current version May 20, 2020. This work was supported by the KTH SweGRIDS. Paper no. TEC-00572-2019. (Corresponding author: Muhammad Taha Ali.) M. T. Ali and M. Ghandhari are with the Department of Electric Power and Energy Systems, KTH Royal Institute of Technology, 11428 Stockholm, Sweden (e-mail:;

Publisher Copyright:
© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Copyright 2020 Elsevier B.V., All rights reserved.

Fingeraftryk Dyk ned i forskningsemnerne om 'Analysis and Mitigation of SSCI in DFIG Systems with Experimental Validation'. Sammen danner de et unikt fingeraftryk.