Nonlinear Control Structure of Grid Connected Modular Multilevel Converters

Amin Hajizadeh, Lars Norum, Alireza Ahadpour Shal

Research output: Contribution to journalConference article in JournalResearchpeer-review

1 Citation (Scopus)
183 Downloads (Pure)

Abstract

This paper implements nonlinear control structure based on Adaptive Fuzzy Sliding Mode (AFSM) Current Control and Unscented Kalman Filter (UKF) to estimate the capacitor voltages from the measurement of arm currents of Modular Multilevel Converter (MMC). UKF use nonlinear unscented transforms in the prediction step in order to preserve the stochastic characteristics of a nonlinear system. In order to design adaptive robust control strategy and nonlinear observer, mathematical model of MMC using rotating d-q theory has been used. Digital time-domain simulation studies are carried out in the Matlab/Simulink environment to verify the performance of the overall proposed control structure during different case studies.
Original languageEnglish
Article number501
Book seriesRenewable Energy & Power Quality Journal
Volume15
Pages (from-to)876-881
Number of pages6
ISSN2172-038X
DOIs
Publication statusPublished - Apr 2017
EventInternational Conference on Renewable Energies and Power Quality (ICREPQ’17) - Malaga, Spain
Duration: 4 Apr 20176 Apr 2017

Conference

ConferenceInternational Conference on Renewable Energies and Power Quality (ICREPQ’17)
Country/TerritorySpain
CityMalaga
Period04/04/201706/04/2017

Keywords

  • Nonlinear Control
  • Kalman Filter
  • Nonlinear observer
  • Modular Multilevel Converter

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