DC network stability and dynamic analysis using virtual impedance method

Dong Chen, Lie Xu, Liangzhong Yao

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

12 Citations (Scopus)

Abstract

A stability and dynamic assessment method is proposed for converter interfaced DC networks. With the current loop modeled as a 1st order delay, an actively controlled DC terminal converter and its control can be modeled as a virtual impedance in S-domain. Terminal transfer functions can therefore be obtained using Thevenin's equivalent. Based on the modeling method, a case study concerning voltage variation suppression in a multi-terminal DC network is performed using root locus and open-loop margin analysis. The accuracy of the developed DC network model and its effectiveness for assessing system stability and dynamic performance is validated using circuit simulation in time domain.
LanguageEnglish
Title of host publicationIECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society
PublisherIEEE
Pages5625 - 5630
Number of pages6
ISBN (Print)978-1-4673-2419-9
DOIs
Publication statusPublished - Oct 2012
EventIEEE IECON 2012 - Montreal, Canada
Duration: 15 Oct 2012 → …

Conference

ConferenceIEEE IECON 2012
CountryCanada
CityMontreal
Period15/10/12 → …

Fingerprint

Dynamic analysis
Root loci
Circuit simulation
System stability
Transfer functions
Electric potential

Keywords

  • DC dynamic analysis
  • dynamic assessment method
  • terminal transfer functions
  • open-loop margin analysis

Cite this

Chen, D., Xu, L., & Yao, L. (2012). DC network stability and dynamic analysis using virtual impedance method. In IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society (pp. 5625 - 5630 ). IEEE. https://doi.org/10.1109/IECON.2012.6389036
Chen, Dong ; Xu, Lie ; Yao, Liangzhong. / DC network stability and dynamic analysis using virtual impedance method. IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society. IEEE, 2012. pp. 5625 - 5630
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title = "DC network stability and dynamic analysis using virtual impedance method",
abstract = "A stability and dynamic assessment method is proposed for converter interfaced DC networks. With the current loop modeled as a 1st order delay, an actively controlled DC terminal converter and its control can be modeled as a virtual impedance in S-domain. Terminal transfer functions can therefore be obtained using Thevenin's equivalent. Based on the modeling method, a case study concerning voltage variation suppression in a multi-terminal DC network is performed using root locus and open-loop margin analysis. The accuracy of the developed DC network model and its effectiveness for assessing system stability and dynamic performance is validated using circuit simulation in time domain.",
keywords = "DC dynamic analysis, dynamic assessment method, terminal transfer functions, open-loop margin analysis",
author = "Dong Chen and Lie Xu and Liangzhong Yao",
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Chen, D, Xu, L & Yao, L 2012, DC network stability and dynamic analysis using virtual impedance method. in IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society. IEEE, pp. 5625 - 5630 , IEEE IECON 2012, Montreal, Canada, 15/10/12. https://doi.org/10.1109/IECON.2012.6389036

DC network stability and dynamic analysis using virtual impedance method. / Chen, Dong; Xu, Lie; Yao, Liangzhong.

IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society. IEEE, 2012. p. 5625 - 5630 .

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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AU - Xu, Lie

AU - Yao, Liangzhong

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N2 - A stability and dynamic assessment method is proposed for converter interfaced DC networks. With the current loop modeled as a 1st order delay, an actively controlled DC terminal converter and its control can be modeled as a virtual impedance in S-domain. Terminal transfer functions can therefore be obtained using Thevenin's equivalent. Based on the modeling method, a case study concerning voltage variation suppression in a multi-terminal DC network is performed using root locus and open-loop margin analysis. The accuracy of the developed DC network model and its effectiveness for assessing system stability and dynamic performance is validated using circuit simulation in time domain.

AB - A stability and dynamic assessment method is proposed for converter interfaced DC networks. With the current loop modeled as a 1st order delay, an actively controlled DC terminal converter and its control can be modeled as a virtual impedance in S-domain. Terminal transfer functions can therefore be obtained using Thevenin's equivalent. Based on the modeling method, a case study concerning voltage variation suppression in a multi-terminal DC network is performed using root locus and open-loop margin analysis. The accuracy of the developed DC network model and its effectiveness for assessing system stability and dynamic performance is validated using circuit simulation in time domain.

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KW - terminal transfer functions

KW - open-loop margin analysis

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Chen D, Xu L, Yao L. DC network stability and dynamic analysis using virtual impedance method. In IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society. IEEE. 2012. p. 5625 - 5630 https://doi.org/10.1109/IECON.2012.6389036