Wind turbine inverter robust loop-shaping control subject to grid interaction effects

Mikkel Peter Sidoroff Gryning, Qiuwei Wu, Mogens Blanke, Hans Henrik Niemann, Karsten P.H. Andersen

Research output: Contribution to journalJournal articleResearchpeer-review

436 Downloads (Pure)


An H∞ robust control of wind turbine inverters employing an LCL filter is proposed in this paper. The controller dynamics are designed for selective harmonic filtering in an offshore transmission network subject to parameter perturbations. Parameter uncertainty in the network originates from the grid and the number of wind turbines connected. Power converter based turbines inject harmonic currents, which are attenuated by passive filters. A robust high order active filter controller is proposed to complement the passive filtering. The H∞ design of the control loop enables desired tracking with integral effect while bounding the induced change. The design was tested in an aggregated model of the London Array offshore wind power plant and compared with traditional PI controller designs. Robust stability and performance and a reduction of control effort by 25% are obtained over the full envelope of operation.
Original languageEnglish
JournalIEEE Transactions on Sustainable Energy
Issue number1
Pages (from-to)41-50
Publication statusPublished - 2015

Bibliographical note

(c) 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, 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 components of this work in other works


  • Inverters
  • Power conversion harmonics
  • Power system control
  • Robust Control
  • Wind farms


Dive into the research topics of 'Wind turbine inverter robust loop-shaping control subject to grid interaction effects'. Together they form a unique fingerprint.

Cite this