27-Level DC-AC inverter with single energy source

K. M. Tsang, Wai Lok Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

21 Citations (Scopus)


A novel design of multilevel DC-AC inverter using only single renewable energy source is presented in this paper. The proposed approach enables multilevel output to be realised by a few cascaded H-bridges and a single energy source. As an illustration, a 27-level inverter has been implemented based on three cascaded H-bridges with a single energy source and two capacitors. Using the proposed novel switching strategy, 27 levels can be realized and the two virtual energy sources can be well regulated. Experimental results are included to demonstrate the effectiveness of the proposed inverter.
Original languageEnglish
Pages (from-to)99-107
Number of pages9
JournalEnergy Conversion and Management
Issue number1
Publication statusPublished - 1 Jan 2012


  • 27-Level inverter
  • DC-AC inverter
  • PWM free

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology


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