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Enhanced digital PI control with state-variable feedback loop for DC electric springs

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

Abstract

DC electric springs (DCES) have recently been proposed as a potential solution for resolving the issue of power supply-demand imbalance of DC microgrids caused by the fluctuations of intermittent renewable energy sources (RES). Existing control of DCES based on conventional PI compensation are designed for good steady-state performance. The dynamic performance of DCES has not been explored. In this paper, an enhanced digital PI control comprising a state-variable feedback loop, aimed at optimizing both the steady-state and transient performances of the DCES, is proposed. Experiment results show that with this control, faster transient of the DCES is achievable and that the DCES can rapidly tame the possible fluctuations of renewable energy sources in a 48 V DC test grid more effectively. © 2017 IEEE.
Original languageEnglish
Title of host publication2017 IEEE Applied Power Electronics Conference and Exposition (APEC)
PublisherIEEE
Pages1242-1247
ISBN (Electronic)978-1-5090-5366-7
DOIs
Publication statusPublished - 2017
Externally publishedYes
Event32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017 - Tampa, United States
Duration: 26 Mar 201730 Mar 2017

Publication series

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

Conference

Conference32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017
PlaceUnited States
CityTampa
Period26/03/1730/03/17

Funding

This project is supported in part by the Hong Kong Research Grant Council under the Theme-Based Research Scheme T23-701/14-N.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Research Keywords

  • DC electric springs (DCES)
  • DC microgrids
  • Digital feedback control
  • Dynamic modeling
  • State-variable feedback

RGC Funding Information

  • RGC-funded

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