A Family of Quasi Switched Capacitor (QSC) Circuit for Half Bridge DC-DC Converter for Energy Storage Applications

This paper presents an efficient bidirectional Half Bridge Dc-Dc converter in combination with Quasi Switched capacitor converter for low power applications. Dc source and a battery are used as input sources for this converter and it utilizes transformer to isolate half bridge and quasi switched converter. Hence half bridge is connected on primary side and QSC is connected on secondary side of transformer. Compared to general SMPS Half bridge circuit, QSC Half Bridge has good efficiency, low switching stress, soft switching is obtained. A 200W bidirectional half bridge circuit is modeled and simulations are done in MATLAB and obtained results are verified with theoretical calculations.