Generalized switching function model of modular multilevel converter

G. P. Adam, P. Li, I. A. Gowaid, B. W. Williams

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

16 Citations (Scopus)


This paper presents a generalized switching function model of the modular multilevel converter (MMC) that can be used instead of MMC electromagnetic transient simulation model for full-scale simulations of high-voltage dc (HVDC) and flexible ac transmission systems (FACTS). The proposed method is computationally more efficient and numerically stable than its electromagnetic transient simulation counterpart, and it is applicable for wide range of studies, including ac and dc network faults. The proposed switching function model is packaged in a graphical form to suit various simulation platforms such as Simulink and PSCAD. The validity of the presented model is confirmed using simulation and its scalability has been demonstrated on MMC with 301 cells per arm, considering power reversal during normal operation and dc short circuit fault.
Original languageEnglish
Title of host publication2015 IEEE International Conference on Industrial Technology (ICIT)
Number of pages6
Publication statusPublished - 18 Jun 2015


  • EMTP
  • HVDC power convertors
  • HVDC power transmission
  • flexible AC transmission systems
  • numerical stability
  • power system simulation
  • power transmission faults
  • short-circuit currents
  • FACTS simulation
  • HVDC simulation
  • MMC
  • Simulink
  • ac network faults
  • dc network faults
  • dc short circuit fault
  • flexible AC transmission system simulation
  • generalized switching function model
  • high-voltage dc simulation
  • modular multilevel converter
  • normal operation
  • power reversal
  • Capacitors
  • Computational modeling
  • Integrated circuit modeling
  • Numerical models
  • Switches
  • Switching circuits
  • Voltage measurement
  • electromagnetic transient simulation model
  • high-voltage dc transmission systems
  • switching function model


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