A bidirectional LLC-C Resonant DC-DC Converter Based on Normalized Symmetry Resonant Tank. Issue 31 (2018)

• Record Type: Journal Article
• Authors: Yang, Dongjiang; Duan, Bin; Ding, Wenlong; Song, Jinqiu; Zhang, Chenghui
• Is Part Of: IFAC-PapersOnLine. Volume 51:Issue 31(2018)
• Page Start: 685
• Page End: 689
• Publication Date: 2018
• Subjects: Bidirectional converter -- LLC resonant converter -- zero voltage switching (ZVS) -- ESS systems; Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2018.10.158
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: A bidirectional LLC-C resonant converter with a normalized symmetry resonant tank is proposed for energy storage system. In the proposed LLC-C converter, two auxiliary switches are added to provide bypass path for each resonant capacitor. In either forward or backward operating mode, the converter can work as traditional LLC resonant converter, which has more methods to analysis and design. In addition, a design procedure is introduced to optimally design the LLC-C converters. An accurate algorithm based on enumeration of the ratio of two resonant inductors is introduced to find the required peak gain at the full load. Several design options can be evaluated and the optimal one can be selected for respective applications. At last, a simulation was performed with Simulink to verify the usability of the proposed topology and the effectiveness of the proposed design method.