Open access
Datum
2021-12Typ
- Journal Article
Abstract
Passivity theory has recently contributed to developing decentralized control schemes for large-scale systems. Many decentralized passivity-based control schemes are designed in continuous-time. It is well-known, however, that the passivity properties of continuous-time systems may be lost under discretization. In this letter, we present a novel stabilizing decentralized control scheme by ensuring passivity for discrete-time systems directly and thus avoiding the issue of passivity preservation. The controller is synthesized by locally solving a semidefinite program offline for each subsystem in a decentralized fashion. This program comprises local conditions ensuring that the corresponding subsystem is locally passive. Passivity is ensured with respect to a local virtual output which is different from the local actual output. The program also comprises local conditions ensuring that the local passivity of all subsystems implies the asymptotic stability of the whole system. The performance of the proposed controller is evaluated on a case study in DC microgrids. © 2021 IEEE Mehr anzeigen
Persistenter Link
https://doi.org/10.3929/ethz-b-000478976Publikationsstatus
publishedExterne Links
Zeitschrift / Serie
IEEE Control Systems LettersBand
Seiten / Artikelnummer
Verlag
IEEEThema
Decentralized control; Large-scale systems; Passivity theoryOrganisationseinheit
03751 - Lygeros, John / Lygeros, John
Förderung
787845 - Optimal control at large (EC)
Zugehörige Publikationen und Daten
Is previous version of: http://hdl.handle.net/20.500.11850/500789