Power Loss and Efficiency Analysis of a Four-level π-type Converter

Bosen Jin, Xibo Yuan

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

8 Citations (Scopus)
406 Downloads (Pure)


In this paper, an analytical model has been developed to analyze the device power loss and the efficiency of a new four-level π-type converter. The efficiency of the π-type converter has been evaluated against a conventional two-level converter, three-level T-type converter as well as the three-level NPC converter. It has been found out that the four-level π-type converter has a higher efficiency when switching frequency is above 5 kHz. It can achieve 97% efficiency at 50 kHz switching frequency under the rated current. An experimental four-level π-type inverter topology has been built and the efficiency has been validated.
Original languageEnglish
Title of host publication 2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe 2015)
Subtitle of host publicationProceedings of a meeting held 8-10 September 2015, Geneva, Switzerland
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages10
ISBN (Electronic)9789075815238
ISBN (Print)9781479982776
Publication statusPublished - Jan 2016


  • Multilevel converter
  • Efficiency
  • Loss modelling
  • Pulse width modulation (PWM)
  • Thermal stress

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