Novel High Gain Common Grounded Z-Source DC-DC Converter

Abstract

Z-Source DC-DC boost converters are applicable in PV panel applications due to their high gain and increased stability with low duty ratio. The inclusion of common ground in the z-source converter increases the gain further and reduces the voltage stress on switch and diodes. A new topology is being introduced by modifying the basic common grounded z-source converter circuit. Analysis of the proposed converter showed significant increase in gain compared to the basic common grounded topology. Design equations of the new topology have been derived including efficiency calculations. Simulation results are also observed to verify the performance. Finally, comparison with other z-source topologies is performed to highlight the advantages and drawbacks.