Open AccessSwitched‐boost network‐based single‐phase boost DC–AC converter
Author(s) -
Nguyen MinhKhai,
Cho GeumBae,
Lim YoungCheol
Publication year - 2016
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2016.0243
Subject(s) - boost converter , flyback converter , ćuk converter , forward converter , three phase , single phase , computer science , electrical engineering , electronic engineering , voltage , engineering
This study proposes a new single‐phase boost DC–AC converter based on the switched‐boost network. The proposed converter has the following features: (i) the input current is continuous; (ii) the input and output share the same ground; and (iii) the output voltage waveform has only three levels (positive, zero, and negative levels). Compared with the conventional single‐phase half‐bridge Z‐source inverter (HB‐ZSI), the proposed converter uses one additional active switch, but fewer inductors and capacitors. In addition, the peak output voltage of the proposed converter is twice that of the HB‐ZSI for the same shoot‐through duty cycle. The operating principles, parameter design, small‐signal analysis, and comparison with the single‐phase HB‐ZSI are presented. The simulation and experimental results are shown to verify the operating theory of the proposed converter. Finally, an isolated boost DC–DC converter is developed in the experiment with 42 V input and 600 V output as an example for the application of the proposed converter.