Bi-directional multi-level converter for an energy storage system

Sang Hyup Han, Heung Geun Kim, Honnyong Cha, Tae Won Chun, Eui Cheol Nho

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

This paper proposes a 3 kW single-phase bi-directional multi-level converter for energy storage applications. The proposed topology is based on the H-bridge structure with four switches connected to the DC-link. A simple phase opposition disposition PWM method that requires only one carrier signal is also suggested. The switching sequence to balance the capacitor voltage is considered. The topology can be extended to a nine-level converter or a three-phase system. The operating principle of the proposed converter is verified through a simulation and an experiment.

Original languageEnglish
Pages (from-to)499-506
Number of pages8
JournalJournal of Power Electronics
Volume14
Issue number3
DOIs
StatePublished - May 2014

Keywords

  • Multi-level converter
  • Power conditioning system
  • PWM strategy
  • Renewable energy sources

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