Achieving Multiple Functions of Three-Phase Electric Springs in Unbalanced Three-Phase Power Systems Using the Instantaneous Power Theory

Shuo Yan, Ming Hao Wang, Tian Bo Yang, Siew Chong Tan, Balarko Chaudhuri, S. Y. Ron Hui

Research output: Journal article publicationJournal articleAcademic researchpeer-review

23 Citations (Scopus)


Three-phase electric spring (3-ph ES) has recently been proposed as a fast demand response technology for applications in unbalanced power systems fed with a mixture of conventional and renewable power generation. Using the instantaneous power theory as the theoretical framework, this paper presents the criteria and conditions for minimizing the average and oscillating power of the 3-ph ES for the first time. A detailed analysis of the use of 3-ph ES is included for providing multiple control objectives of voltage regulation and power balancing of the 3-ph power system, and minimization of the average and oscillating ac power of the ES. A corresponding control scheme implementable in a single controller is included and explained. The control scheme has been practically verified with experiments.

Original languageEnglish
Pages (from-to)5784-5795
Number of pages12
JournalIEEE Transactions on Power Electronics
Issue number7
Publication statusPublished - Jul 2018


  • Electric spring (ES)
  • instantaneous power theory
  • multifunctional control
  • power balance
  • voltage stabilization

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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