Decentralized hybrid switching control of multiconverter MVDC shipboard power systems

Dominik Mildt, Ryogo Kubo

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Due to the presence of power electronics interfaced generation, voltage stability is a key design goal for converter control systems, such as in Medium-Voltage DC in naval vessels. In the presence of power electronic converter interfaced loads that can display high-bandwidth constant power load (CPL) behavior, the nonlinearity of the negative incremental resistance can induce instability. This paper employs a local and switched affine model for buck converters interfacing the generation units. Load behavior and system interaction are modelled via a virtual disturbance approach and included as an additional state in an augmented local Kalman filter (ALKF). Stored energy in inductor and capacitor are used to derive a Lyapunov function defining stability regions for the switching states and subsequently a switching rule ensuring quadratic stability is chosen. The simulation of an exemplary system shows how voltage stability is achieved. The controller is then further extended to avoid steady-state errors and limit the converters switching frequency.

    Original languageEnglish
    Title of host publicationProceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages6795-6800
    Number of pages6
    Volume2017-January
    ISBN (Electronic)9781538611272
    DOIs
    Publication statusPublished - 2017 Dec 15
    Event43rd Annual Conference of the IEEE Industrial Electronics Society, IECON 2017 - Beijing, China
    Duration: 2017 Oct 292017 Nov 1

    Other

    Other43rd Annual Conference of the IEEE Industrial Electronics Society, IECON 2017
    CountryChina
    CityBeijing
    Period17/10/2917/11/1

    ASJC Scopus subject areas

    • Industrial and Manufacturing Engineering
    • Control and Optimization
    • Energy Engineering and Power Technology
    • Electrical and Electronic Engineering

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  • Cite this

    Mildt, D., & Kubo, R. (2017). Decentralized hybrid switching control of multiconverter MVDC shipboard power systems. In Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society (Vol. 2017-January, pp. 6795-6800). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IECON.2017.8217187