Multilevel converters for UPS applications: comparison and implementation

Alberto Lega, Stig Munk-Nielsen, Domenico CASADEI, Frede Blaabjerg

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

17 Citations (Scopus)

Abstract

In this paper the possibility to use multilevel converters in UPS applications is discussed. Three different converter topologies, i.e. the three-level diode-clamped, the four-level diode-clamped and the four-level Multi Point Clamped (MPC) have been firstly compared by simulation simulations to find out their efficiency. The Simulink environment has been used, together with Plecs toolbox, to obtain a fast simulation including conduction and switching losses in the components. The MPC turned out to be the converter with the highest efficiency among the three considered and it was implemented to prove the simulation result with some experimental tests. Furthermore, two switching tables for the MPC converter have been implemented and compared in order to minimize the voltage spikes across the switches during the commutations.
Original languageEnglish
Title of host publicationProceedings of the 12th European Conference on Power Electronics and Applications, EPE 2007
Number of pages10
PublisherEPE Association
Publication date2007
ISBN (Electronic)9789075815108
Publication statusPublished - 2007
Event2007 European Conference on Power Electronics and Applications, EPE - Aalborg, Denmark
Duration: 2 Sept 20075 Sept 2007
Conference number: 12

Conference

Conference2007 European Conference on Power Electronics and Applications, EPE
Number12
Country/TerritoryDenmark
CityAalborg
Period02/09/200705/09/2007

Keywords

  • Multilevel converters
  • Efficiency
  • Uninterruptible Power Supply (UPS)
  • Simulation
  • Measurement

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