Galvanically isolated high gain Y-source DC–DC converters for dispersed power generation

This study deals with a novel high voltage gain isolated dc–dc converter that utilise a versatile Y-source for its boosting stage. Having Y-source impedance network, isolation transformer and voltage doubling rectifier, the proposed converter can achieve high voltage gain with reduced stress on its components. Since continuous input current (CIC) ability is an advantageous characteristic of dc–dc converters tied to renewable energy sources, a CIC version of the proposed converter is well demonstrated and discussed in the study. In addition, detailed operation principles of the proposed converters are mathematically expressed. Simulation results from Simulink\Pspice interface have examined the performance of proposed converters in both boost and normal operation modes. Finally, a laboratory prototype was built to evaluate the theoretical assumptions. Besides, in the experiment a TMS320F2812 digital signal processor board was used for generating the shifted shoot-through control method. Experimental results in both operation modes show a reliable performance for the proposed CIC converter and its counterpart.