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A Scalable Port-Hamiltonian Approach to Plug-and-Play Voltage Stabilization in DC Microgrids

Strehle, Felix; Pfeifer, Martin; Krebs, Stefan; Hohmann, Sören

Abstract (englisch):
One of the major challenges of voltage stabilization in DC microgrids are the large system scale and multiple interacting components. In recent publications, this has been addressed by a scalable and decentralized control design method referred to as plug-and-play. In contrast to the existing approaches, the method presented in this paper does not require the proposition of a Lyapunov function for control design and subsequent stability analysis, and can handle unknown loads (disturbances). It is based on passivity techniques, namely interconnection and damping assignment passivity-based control (IDA-PBC), and port-Hamiltonian systems (PHSs). The Hamiltonian being a byproduct of the modeling step, serves as natural Lyapunov function in our approach, which obviates the proposition step. An extension of the controller
with integral action (IA) robustifies the design against unknown loads. A simulation which illustrates the functionality of the proposed voltage controller concludes our contribution.

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Preprint §
DOI: 10.5445/IR/1000090285
Veröffentlicht am 12.02.2019
Seitenaufrufe: 64
seit 12.02.2019
Downloads: 51
seit 12.02.2019
Zugehörige Institution(en) am KIT Institut für Regelungs- und Steuerungssysteme (IRS)
Publikationstyp Proceedingsbeitrag
Jahr 2019
Sprache Englisch
Identifikator urn:nbn:de:swb:90-902858
KITopen-ID: 1000090285
HGF-Programm 37.06.01 (POF III, LK 01)
Erschienen in IFAC-PapersOnLine
Veranstaltung 11th IFAC Symposium on Nonlinear Control Systems (NOLCOS 2019), Wien, Österreich, 04.09.2019 – 06.09.2019
Schlagworte voltage stabilization, DC microgrids, plug-and-play, scalable control, port-Hamiltonian systems, passivity-based control, integral action
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