Abstract
This study presents a high step-up switched Z -source inverter. Only by using one more inductor and capacitor in comparison with switched boost inverter, the presented inverter reaches various advantages such as including high boost factor, reduced range of duty cycle and continuous input current. These features make it suitable to use in different applications such as photovoltaic system to increase the voltage level. In this study, a comprehensive analysis of the presented inverter in shoot through (ST) and non-ST operation modes are given. This study also elaborates an appropriate switching pattern for the proposed inverter. There is also a comprehensive comparison and cost evaluation of the proposed structure with conventional structures. Cost and power efficiency comparisons are evaluated by the design considerations of ZSIs in the same condition. Finally, in order to reconfirm the analyses, the experimental results of the laboratory prototype are presented.
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