Enhanced voltage regulation of AC microgrids with electric springs

Yufei He, Minghao Wang, Zhao Xu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

3 Citations (Scopus)

Abstract

Intermittent renewable generations can induce voltage instability issues in terms of (i) AC bus voltage variations and (ii) voltage flickers in AC microgrids, which deteriorate the power quality of the critical loads. To address this, the electric springs with capacitive energy storages can be applied to regulate the bus voltages at the points of common coupling (PCCs). In this paper, a novel control method is proposed to enhance the voltage regulation performances of the ES in AC microgrids. The controller is designed to achieve the concurrent compensations of bus voltage variations and voltage flickers. The steady-state model of an ES associated with a non-critical load (NCL) is analytically derived. The design of the controller as well as the small-signal analysis is provided. The experiments and simulations have been performed on a scaled-down 110 V AC microgrid. The results have verified that the proposed control method can effectively realize the aforementioned functionalities.

Original languageEnglish
Title of host publication34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages534-539
Number of pages6
ISBN (Electronic)9781538683309
DOIs
Publication statusPublished - 24 May 2019
Event34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 - Anaheim, United States
Duration: 17 Mar 201921 Mar 2019

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Volume2019-March

Conference

Conference34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
Country/TerritoryUnited States
CityAnaheim
Period17/03/1921/03/19

Keywords

  • AC microgrid
  • Electric springs
  • Hybrid control
  • Smart load

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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