Power routing for cascaded h-bridge converters

Youngjong Ko, Markus Andresen, Giampaolo Buticchi, Marco Liserre

Research output: Journal PublicationArticlepeer-review

59 Citations (Scopus)

Abstract

Modular power converters are expected to play a major role in medium- and high-voltage/power applications. Normally, each module processes the same amount of power; however, this does not take into consideration that different modules can have a different remaining useful lifetime. This paper proposes the concept of power routing for cascaded H-bridge (CHB) converters, with the purpose of delaying the failure of the system. A third-harmonic injection into the duty cycles allows extending the imbalance capability of the structure, keeping the CHB operational even if some power paths are completely unloaded. Analytic investigation in conjunction with simulation and experimental measurements demonstrate the power routing by means of the proposed method.

Original languageEnglish
Article number7833145
Pages (from-to)9435-9446
Number of pages12
JournalIEEE Transactions on Power Electronics
Volume32
Issue number12
DOIs
Publication statusPublished - Dec 2017
Externally publishedYes

Keywords

  • Active thermal control
  • cascaded H-bridge (CHB)
  • multilevel converter
  • power routing
  • reliability

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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