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

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ASJC Scopus subject areas

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

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