Experimental Validation with FPGA Controller to A Switched-Capacitor Interleaved Bidirectional DC-DC Converter for A Renewable Energy Storage Systems

Abstract

A Switched-Capacitor Interleaved Bidirectional DC-DC Converter is used to increase the voltage gain and to decrease the voltage gain to a renewable energy storage system is illustrated with an experimental setup using FGPA controller. This interleaved construction is accepted on this converter of the less-voltage side to decrease the content of the ripple which flows through the side which is low-voltage of this converter. This type of series-connection structure is accepted to achieve the more voltage gain on the higher voltage side/less voltage gain on the high-voltage side of this converter structure. Also, this type of structure is need in a bidirectional synchronic rectification performance are carried out without requiring any additional experimental setup for the same operation, and with this type of converter’s structure its performance is improved. Besides, with this structure, here we can analyze the converter’s current ripple characteristics and also, the operating principles of voltage, and current stresses. Finally; a power rating of kW experimental setup was constructed to analyze this converter’s performance for different ranges under various voltage gain ranges in between the voltage ranges of 50V to 120V on the low-voltage side of this converter while other voltage 400V is kept constant. Under this condition, this converters’ efficiency obtained maximum value is 95.21% in the increase mode whereas when the converter is operating in the decrease mode of operation, the efficiency obtained value is 95.30%. The investigational validation values are verified for boost increase mode and decrease mode of operation with the experimental setup. The same circuit is also performed with the Simulink and got verified for increase and decrease modes of performance.