Design of wide-area damping control robust to transmission delay using μ-synthesis approach

Song Zhang, Vijay Vittal

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations


H mixed-sensitivity optimization method has been utilized to design controllers that robust to variation of system operating conditions and transmission delays. The H technique, however, is restricted to dealing with multiplicative or additive uncertainty and can lead to conservative controller performances in the case when there is more than one structured uncertainty. Compared to H approach, the structured singular value (SSV or μ) technique is more appropriate for controller design where multiple parametric uncertainties have to be considered. This paper presents the work of uncertainty modeling and proposes a μ synthesis framework to design a controller robust to both system uncertainty with respect to varying operating conditions and delay uncertainty associated with the wide-area signal transmission. The numerical results have shown that the proposed μ controller can stabilize the system and enhance the damping performance over the specified range of uncertainties compared to the conventional H controller.

Original languageEnglish (US)
Title of host publication2014 IEEE PES General Meeting / Conference and Exposition
PublisherIEEE Computer Society
ISBN (Electronic)9781479964154
StatePublished - Oct 29 2014
Event2014 IEEE Power and Energy Society General Meeting - National Harbor, United States
Duration: Jul 27 2014Jul 31 2014

Publication series

NameIEEE Power and Energy Society General Meeting
ISSN (Print)1944-9925
ISSN (Electronic)1944-9933


Other2014 IEEE Power and Energy Society General Meeting
Country/TerritoryUnited States
CityNational Harbor


  • LFT representation
  • parametric uncertainty
  • robust control
  • transmission delay
  • wide-area
  • μ synthesis

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering


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