Network Topology Invariant Stability Certificates for DC Microgrids with Arbitrary Load Dynamics release_vgtae3jqubdh5nimsf5foz4sw4

by Samuel Chevalier and Federico Martin Ibanez and Kathleen Cavanagh and Konstantin Turitsyn and Luca Daniel and Petr Vorobev

Released as a article .

2021  

Abstract

DC microgrids are prone to small-signal instabilities due to the presence of tightly regulated loads. This paper develops a decentralized stability certificate which is capable of certifying the small-signal stability of an islanded DC network containing such loads. Utilizing a novel homotopy approach, the proposed standards ensure that no system eigenmodes are able to cross into the unstable right half plane for a continuous range of controller gain levels. The resulting "standards" can be applied to variety of grid components which meet the specified, but non-unique, criteria. These standards thus take a step towards offering plug-and-play operability of DC microgrids. The proposed theorems are explicitly illustrated and numerically validated on multiple DC microgrid test-cases containing both buck and boost converter dynamics.
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Type  article
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Date   2021-07-08
Version   v3
Language   en ?
arXiv  2011.06707v3
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