New 3-level submodules for a modular multilevel converter based HVDC system with advanced features

Ashish Kumar Sahoo, Ruben Otero-De-Leon, Visweshwar Chandrasekaran, Ned Mohan

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

23 Scopus citations

Abstract

Modular multilevel converters have emerged as a viable solution over conventional voltage source converters (VSC) for applications in high voltage direct current (HVDC) transmission. Due to modular structure, the converter can reach high number of voltage levels resulting in low switching frequency and near sinusoidal voltage waveforms. This paper proposes new submodule topologies which can result in even higher voltage levels with reduced voltage stress across some switches and lower semiconductor losses. A modified modulation scheme and voltage balancing algorithm is proposed for the new topology and is validated by MATLAB/Simulink simulations. A comprehensive comparative analysis with other available submodule topologies is presented to show the added benefits.

Original languageEnglish (US)
Title of host publicationProceedings, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society
Pages6269-6274
Number of pages6
DOIs
StatePublished - 2013
Event39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013 - Vienna, Austria
Duration: Nov 10 2013Nov 14 2013

Publication series

NameIECON Proceedings (Industrial Electronics Conference)

Other

Other39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013
Country/TerritoryAustria
CityVienna
Period11/10/1311/14/13

Keywords

  • Carrier based pulse width modulation
  • HVDC
  • Modular multilevel converter (MMC)
  • Submodules (SM)
  • Voltage balancing algorithm

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