@article{Wang2026, 
author = {Kaixuan Wang and Fengjiang Wu and Yang Shen and Guizhong Wang},
title = {Single-phase Single-stage Three-port High-frequency Isolated DC-AC Converter},
year = {2026},
journal = {CSEE Journal of Power and Energy Systems},
volume = {12},
number = {4},
pages = {1997-2006},
keywords = {Double-line-frequency ripple, high-frequency isolated, single stage DC-AC converter, three-port},
url = {https://www.sciopen.com/article/10.17775/CSEEJPES.2022.04970},
doi = {10.17775/CSEEJPES.2022.04970},
abstract = {In order to improve integration of AC grid-connected hybrid energy storage system, a single-phase, single-stage, three-port high-frequency isolated DC-AC converter is proposed. Operation principle and characteristics of the proposed converter are analyzed. The essential principle is a detailed description of the proposed converter's capability to suppress double-line-frequency ripple power. Meanwhile, PR-based control loop that realizes suppression of double-line-frequency ripple is proposed to reduce DC-side capacitance. On this basis, in order to deal with the coupling problem caused by shared AC port at control level, a system-level closed-loop control strategy is proposed to achieve separate control of the two DC ports and AC-side current. The feasibility of the proposed converter and control strategy is verified by experiments.}
}