Cascaded Z-Source Inverters with Switched-Inductor and Transformer Cells

Minh-Khai Nguyen

J. of Advanced Engineering and Technology, Vol. 6, No.2 (2013)  pp.85~92

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This paper presents an alternate-cascaded technique for Z-source inverter 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 cascaded inverter produces high voltage gain with distributing the stresses on the passive components. This paper presents the operating principles and analysis. To verify the performance of the proposed inverter, simulation and experimental results are shown with two-cascading network.

Keywords: Z-source inverter, Cascaded inverter, Transformer, Switched-inductor, Shoot-through state.