Soft-Switched Three-Port DC-DC Converter With Simple Auxiliary Circuit

IEEE Access

Lei Ding¹  Mostafa Kheshti¹  Rasoul Faraji¹  Tohid Rahimi¹  Md. Rabiul Islam² 

[1] Key Laboratory of Power System Intelligent Dispatch and Control, School of Electrical Engineering, Shandong University, Ministry of Education, Jinan, China;School of Electrical, Computer, and Telecommunications Engineering, University of Wollongong, Wollongong, NSW, Australia;

关键词: Distributed energy systems;    dc-dc converters;    soft-switching;    hybrid power systems;    multi-input converter;   

DOI  :  10.1109/ACCESS.2021.3076183

来源: DOAJ

【 摘 要 】

In this paper, a new high efficiency soft-switching non-isolated three-port converter (TPC) is proposed. In the conventional TPC, three switches are required to process power in different directions between inputs and output. Providing soft-switching condition for all switches using a low number of auxiliary components is a challenging task. In this paper, the conventional TPC topology is modified by changing its structure and adding a simple auxiliary circuit such that all switches operate under soft-switching condition in all operating modes. To reduce the volume of the converter, the magnetic components are integrated using a coupled inductor in the auxiliary soft-switching cell. In this paper, various converter operating modes are presented, and design considerations are discussed. Finally, a prototype 200 W, 100 V converter is implemented in the laboratory, and the theoretical analysis is validated by the experimental results.

【 授权许可】

Unknown