Robust Passivity-Based Control of Boost Converters in DC Microgrids

Michele Cucuzzella, Riccardo Lazzari, Yu Kawano, Krishna Chaitanya Kosaraju, Jacquelien M. A. Scherpen

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Abstract

This paper deals with the design of a robust and decentralized passivity-based control scheme for regulating the voltage of a DC microgrid through boost converters. A Krasovskii-type storage function is proposed and a (local) passivity property for DC microgrids comprising unknown ZIP (constant impedance ‘Z’, constant current ‘I’ and constant power ‘P’) loads is established. More precisely, the input port-variable of the corresponding passive map is equal to the first-time derivative of the control input. Then, the integrated input port-variable is used to shape the closed loop storage function such that it has a minimum at the desired equilibrium point. Convergence to the desired equilibrium is theoretically analyzed and the proposed control scheme is validated through experiments on a real DC microgrid.
Original languageEnglish
Title of host publicationProceedings of the 58th Conference on Decision and Control
PublisherIEEE
Pages8435-8440
ISBN (Print)978-1-7281-1398-2/
Publication statusPublished - 12-Mar-2020
Event58th Conference on Decision and Control (CDC2019) - Nice, France
Duration: 11-Dec-201913-Dec-2019

Conference

Conference58th Conference on Decision and Control (CDC2019)
CountryFrance
CityNice
Period11/12/201913/12/2019

Keywords

  • Power systems, Stability of nonlinear systems, Decentralized control

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