Performance Characterization of the Novel Topology for High-frequency Isolation Bi-directional DC/DC Converter

摘要

A novel topology of high-frequency isolation bi-directional DC/DC converter used in high-Input low-output system was proposed, which has not only the advantages, such as enabling bidirectional power flow, ease of realizing soft-switching control, galvanic isolation, high reliability and so on, but also can be used in high-input voltage application and apparently decreases the stress of the switches, which reduces the cost of the converter, improves power density and the efficiency of the converter. According to the different work condition, two control strategies are analyzed in this paper: the traditional phase shifting control (TPC) and PWM plus phase shifting control (PPC), which further improves the overall efficiency of the converter. The MATLAB simulation has been done to verify the feasibility of the proposed DC/DC converter and accuracy of the criterion.