摘要
Due to the slow dynamic power-regulation characteristics of the electrolyser(EL),a novel integrated three-port DC/DC converter topology based on a phase-shifted full-bridge converter and dual active-bridge converter is proposed in this paper.Especially,the proposed converter can achieve a fast auxiliary response to the EL.This topology has the features of single-stage conversion,high system integration and compatibility with multiple operation modes.The operational principles and a hybrid modulation scheme of the proposed converter are analysed in detail.In addition,the power-transmission characteristics of each port and the soft-switching range are researched.On these bases,six operation modes suitable for a hydrogen energy-storage system are designed.The simulation and a 2-kW scaled-down experimental prototype are established to verify the feasibility and effectiveness of the proposed topology in different operation modes.
基金
supported by the National Key R&D Program of China (no.2018YFB1503100)
the National Natural Science Foundation of China (no.51907021).
