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

Chen, Dong and Xu, Lie (2014) DC microgrid dynamic performance assessment and enhancement based on virtual impedance method. In: 40th Annual Conference of the IEEE Industrial Electronics Society (IECON'2014), 2014-10-29 - 2014-11-01.

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    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.

    ORCID iDs

    Chen, Dong ORCID logoORCID: https://orcid.org/0000-0003-2567-7993 and Xu, Lie ORCID logoORCID: https://orcid.org/0000-0001-5633-7866;