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Control of Direct AC/AC Modular Multilevel Converters Using Capacitor Voltage Estimation
KTH, School of Electrical Engineering (EES), Electric power and energy systems.ORCID iD: 0000-0001-8891-5659
KTH, School of Electrical Engineering (EES), Electric power and energy systems.ORCID iD: 0000-0002-8565-4753
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2016 (English)In: 2016 18TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'16 ECCE EUROPE), IEEE, 2016Conference paper (Refereed)
Abstract [en]

This paper applies a control method based on current control and sum-capacitor-voltage estimation to the direct ac/ac modular multilevel converter. As capacitor voltages are estimated, their measurements are not needed in the high-level control, which simplifies the communication between the main controller and the submodules of the converter. The stability of the internal dynamics of the converter, using the aforementioned control method, is studied using Lyapunov stability theory, proving that the system is globally asymptotically stable. The behavior of the converter is simulated focusing on three-phase 50 Hz to single-phase 16 (2)/(3) Hz conversion, which is typical for railway power supply systems of some European countries. Simulation results are in agreement with the expected behavior of the converter, both in steady-state and dynamic situations.

Place, publisher, year, edition, pages
IEEE, 2016.
Series
European Conference on Power Electronics and Applications, ISSN 2325-0313
Keyword [en]
AC-AC converters, multilevel systems, current control, Lyapunov methods
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-197010DOI: 10.1109/EPE.2016.7695319ISI: 000386637300068ScopusID: 2-s2.0-84996836164OAI: oai:DiVA.org:kth-197010DiVA: diva2:1054956
Conference
18th European Conference on Power Electronics and Applications (EPE), SEP 05-09, 2016, GERMANY
Note

QC 20161209

Available from: 2016-12-09 Created: 2016-11-28 Last updated: 2016-12-09Bibliographically approved

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Bessegato, LucaNorrga, StaffanÖstlund, Stefan
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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
More languages
Output format
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