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Research of Wavelet Modulation for Single-Phase Three-Level Inverter

  • Hongchen Liu*
  • , Guolei Fan
  • , Zhenxia Su
  • *Corresponding author for this work
  • School of Electrical Engineering and Automation, Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

The single-phase three-level voltage source inverter based on wavelet modulation (WM) is proposed. The WM technique is based on constructing a nondyadic-type multi-resolution analysis (MRA), which supports sampling continuous-time sinusoidal signals in a nonuniform recurrent manner, and then reconstructing it by using inverter switching actions. In order to further improve the output voltage waveform and reduce harmonic distortion, the wavelet modulation is used to three-level inverter. The high magnitude of fundamental component and significantly reduced harmonic contents of the inverter output voltage can be achieved by using WM in the single-phase three-level voltage source inverter. Furthermore, the WM algorithm is implemented by using only one element government (EV) in DSP. The simulated and experimental results prove the accuracy and feasibility of the WM scheme for single-phase three-level voltage source inverter.

Original languageEnglish
Pages (from-to)11-18
Number of pages8
JournalJournal of Harbin Institute of Technology (New Series)
Volume24
Issue number1
DOIs
StatePublished - 1 Feb 2017
Externally publishedYes

Keywords

  • Fundamental component
  • Harmonic contents
  • Three-level voltage source inverters
  • Wavelet modulation

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