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

Yun Yang, Siew Chong Tan, Shu Yuen Ron Hui

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

    7 Citations (Scopus)

    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.

    Original languageEnglish
    Title of host publication2017 IEEE Applied Power Electronics Conference and Exposition, APEC 2017
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages1242-1247
    Number of pages6
    ISBN (Electronic)9781509053667
    DOIs
    Publication statusPublished - 17 May 2017
    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
    Country/TerritoryUnited States
    CityTampa
    Period26/03/1730/03/17

    Keywords

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

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

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