A Novel Multi-Resonant Isolated Three-port Converter Capable of Achieving Power Decoupling

Abstract

A novel multi-resonant isolated three-port converter (NMI-TPC) for power decoupling. The NMI-TPC adopts a dual LC resonant structure (DLCRS) based on the three-active-bridge converter. By using the DLCRS, power decoupling between ports is achieved. The working principle of NMI-TPC is given. In order to improve the performance of the NMI-TPC, the effective value of the current (EVC) is optimized. By constructing the Lagrangian function, the problem of minimizing the EVC is solved. A prototype, operating at a power level of 1kW, has been developed to validate the theoretical framework.