Study of control strategies of power electronics during faults in microgrids

Jundi Jia, Guangya Yang, Arne Hejde Nielsen, Peter Rønne-Hansen

Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review


This chapter has firstly summarized the instantaneous power theory and its extension for the purpose of controlling voltage source inverters under unbalanced faults. Regarding the converters operating in grid-connected mode to feed a certain amount of active and reactive power to the microgrid, two groups of control strategies, namely flexible oscillating power control and flexible positive- and negative-sequence power control are reviewed together with the design of inner current controllers and converter current limitation methods. For the autonomous operation of the microgrid, the control of a voltage source inverter operating under an islanded mode to provide voltage amplitude and frequency references is briefly reviewed. To improve the short-circuit performance of such an inverter under unbalanced fault, the negative-sequence current control loop is implemented. This chapter is finally supported by the application of different control strategies in a typical microgrid setting followed by discussions on microgrid protection
Original languageEnglish
Title of host publicationHybrid-Renewable Energy Systems in Microgrids
Publication date2018
ISBN (Print)978-0-08-102493-5
Publication statusPublished - 2018
SeriesWoodhead Publishing Series in Energy


  • Dual sequence control
  • Instantaneous power theory
  • Microgrid
  • Protection system
  • Short circuit current


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