Forward LC - Reverse LCC Bidirectional Resonant Converter for Buck and Boost Operation

Abstract

This paper provides detailed design and implementation of bidirectional dc/dc converter in continuous conduction mode using two full bridge circuits separated by LC-LCC resonant tank in forward buck and reverse boost mode respectively. AC equivalent circuit analysis method using first harmonic approximation is used for analysis. Soft switching of all switches is achieved which helps in improving the efficiency of the converter. Bidirectional power flow is achieved using phase angle control method. The analysis is verified using computer simulation results in MATLAB software.