The Voltage Source Converter and the Current Source Converters have the limitations that either they buck or boost the voltage but cannot buck-boost. Quasi Z-source DC-DC converter has an impedance network which performs buck-boost operations. In Quasi Z-Source DC-DC converter the input current is continuous and also the voltage stress across the switches is less. The Quasi Z-Source can boost the input voltage using reduced passive component with improved reliability and reduce cost. Compared to the existing DC-DC converter circuits, they reduce in-rush and harmonic current. Therefore this paper aims at a soft switched Quasi Z-source Converter (qZSC). The simulation results for the proposed configuration are also presented in this paper.
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V. Madusuthanan and Dr. Rashmi M. R., “Bi-directional soft switched quasi z-source DC-DC converter with buck and boost capabilities”, Journal of Chemical and Pharmaceutical Sciences, vol. 9, pp. 471-475, 2016.