Design and Implementation of a Novel Multilevel DC-AC Inverter

Cheng Han Hsieh, Tsorng Juu Liang, Shih Ming Chen, Shih Wen Tsai

Research output: Contribution to journalArticlepeer-review

78 Citations (Scopus)


In this paper, a novel multilevel dc-ac inverter is proposed. The proposed multilevel inverter generates seven-level ac output voltage with the appropriate gate signals' design. Also, the low-pass filter is used to reduce the total harmonic distortion of the sinusoidal output voltage. The switching losses and the voltage stress of power devices can be reduced in the proposed multilevel inverter. The operating principles of the proposed inverter and the voltage balancing method of input capacitors are discussed. Finally, a laboratory prototype multilevel inverter with 400-V input voltage and output 220 Vrms/2 kW is implemented. The multilevel inverter is controlled with sinusoidal pulse-width modulation (SPWM) by TMS320LF2407 digital signal processor (DSP). Experimental results show that the maximum efficiency is 96.9% and the full load efficiency is 94.6%.

Original languageEnglish
Article number7403964
Pages (from-to)2436-2443
Number of pages8
JournalIEEE Transactions on Industry Applications
Issue number3
Publication statusPublished - 2016 May 1

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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