DC microgrid dynamic performance assessment and enhancement based on virtual impedance method

Dong Chen, Lie Xu

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

A dynamic performance assessment method is proposed for DC microgrids. With the control scheme modeled as virtual impedance, an actively controlled slack converter
terminal of a DC network can be modeled as a circuit branch in S-domain. Using Thevenin's equivalent, transfer functions of a DC microgrid are then deduced. A control scheme is proposed to enhance the dynamics of a DC system with multiple slack terminals. A case study of a multi-terminal DC microgrid is performed to analyze and enhance its dynamics. Time domain simulation and experiments are carried out to validate the proposed analytical and enhancement method.

Conference

Conference40th Annual Conference of the IEEE Industrial Electronics Society (IECON'2014)
CountryUnited States
CityDallas
Period29/10/141/11/14

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Transfer functions
Networks (circuits)
Experiments

Keywords

  • DC microgrid
  • dynamic performance assessment
  • virtual impedance
  • renewable power
  • renewable energy

Cite this

Chen, D., & Xu, L. (2014). DC microgrid dynamic performance assessment and enhancement based on virtual impedance method. Paper presented at 40th Annual Conference of the IEEE Industrial Electronics Society (IECON'2014), Dallas, United States.
Chen, Dong ; Xu, Lie. / DC microgrid dynamic performance assessment and enhancement based on virtual impedance method. Paper presented at 40th Annual Conference of the IEEE Industrial Electronics Society (IECON'2014), Dallas, United States.7 p.
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Chen, D & Xu, L 2014, 'DC microgrid dynamic performance assessment and enhancement based on virtual impedance method' Paper presented at 40th Annual Conference of the IEEE Industrial Electronics Society (IECON'2014), Dallas, United States, 29/10/14 - 1/11/14, .

DC microgrid dynamic performance assessment and enhancement based on virtual impedance method. / Chen, Dong; Xu, Lie.

2014. Paper presented at 40th Annual Conference of the IEEE Industrial Electronics Society (IECON'2014), Dallas, United States.

Research output: Contribution to conferencePaper

TY - CONF

T1 - DC microgrid dynamic performance assessment and enhancement based on virtual impedance method

AU - Chen, Dong

AU - Xu, Lie

N1 - (c) 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.

PY - 2014/10/31

Y1 - 2014/10/31

N2 - A dynamic performance assessment method is proposed for DC microgrids. With the control scheme modeled as virtual impedance, an actively controlled slack converter terminal of a DC network can be modeled as a circuit branch in S-domain. Using Thevenin's equivalent, transfer functions of a DC microgrid are then deduced. A control scheme is proposed to enhance the dynamics of a DC system with multiple slack terminals. A case study of a multi-terminal DC microgrid is performed to analyze and enhance its dynamics. Time domain simulation and experiments are carried out to validate the proposed analytical and enhancement method.

AB - A dynamic performance assessment method is proposed for DC microgrids. With the control scheme modeled as virtual impedance, an actively controlled slack converter terminal of a DC network can be modeled as a circuit branch in S-domain. Using Thevenin's equivalent, transfer functions of a DC microgrid are then deduced. A control scheme is proposed to enhance the dynamics of a DC system with multiple slack terminals. A case study of a multi-terminal DC microgrid is performed to analyze and enhance its dynamics. Time domain simulation and experiments are carried out to validate the proposed analytical and enhancement method.

KW - DC microgrid

KW - dynamic performance assessment

KW - virtual impedance

KW - renewable power

KW - renewable energy

UR - http://iecon2014.org/index.php/component/content/article/2-uncategorised/59-program-copy

M3 - Paper

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Chen D, Xu L. DC microgrid dynamic performance assessment and enhancement based on virtual impedance method. 2014. Paper presented at 40th Annual Conference of the IEEE Industrial Electronics Society (IECON'2014), Dallas, United States.