Family of high-boost Z-source inverters with combined switched-inductor and transformer cells

This study proposes a new family of high-boost Z-source inverters (ZSIs) with combined switched-inductor and transformer cells. By changing the transformer turn ratio, the number of switched-inductor cells and shoot-through duty cycle, the proposed inverter produces high voltage gain. Compared with...

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Bibliographic Details
Published in:IET power electronics 2013-07, Vol.6 (6), p.1175-1187
Main Authors: Nguyen, Minh-Khai, Lim, Young-Cheol, Park, Sung-Jun, Shin, Duck-Shick
Format: Article
Language:English
Subjects:
alternate cascaded technique
boost Z‐source inverter
Electric potential
Gain
inductors
Inverters
invertors
Modulation
modulation index
Passive components
power transformers
shoot through duty cycle
stress distribution
switched inductor cell
switching convertors
transformer cells
transformer turn ratio
Transformers
Voltage
Waveforms
ZSI topology
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Summary:This study proposes a new family of high-boost Z-source inverters (ZSIs) with combined switched-inductor and transformer cells. By changing the transformer turn ratio, the number of switched-inductor cells and shoot-through duty cycle, the proposed inverter produces high voltage gain. Compared with the conventional high-boost ZSI topologies for the same input and output voltage, the proposed inverter uses a higher modulation index to improve the output waveform. An alternate-cascaded technique is applied to the proposed inverter to distribute the stresses on the passive components. This study presents the operating principles and analysis. To verify the performance of the proposed inverter, simulation and experimental results are shown with various transformer turn ratios.
ISSN:1755-4535
1755-4543
1755-4543
DOI:10.1049/iet-pel.2013.0033