Performance Analysis of Bidirectional CLLLC Resonant Converter with Synchronous PWM Control Strategy

被引：0
|
作者：
Li S. [1 ]
Liu B. [1 ]
Jiang Q. [1 ]
Duan S. [1 ]
机构：
[1] State Key Laboratory of Electromagnetic Engineering and New Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2019年 / 34卷
关键词：
Bidirectional CLLLC resonant converter; GaN HEMT; Smooth transition; Synchronous PWM control strategy;
D O I：
10.19595/j.cnki.1000-6753.tces.L80470
中图分类号：
学科分类号：
摘要：
Aiming at the bidirectional DC-DC converter which is required for achieving electrical isolation, energy bidirectional transmission in DC distribution network, a bidirectional CLLLC resonant converter with synchronous PWM control strategy is proposed in this paper. In this way, the proposed converter is simple in structure with good soft-switching characteristics. The control scheme is easy to implement, otherwise, compared to other bidirectional resonant converter with variable frequency control, it has the same operating characteristics no matter the direction of power flow and can change the direction of power flow automatically and smoothly between forward mode and backward mode. In this paper, the principle of proposed converter is presented, Besides, based on equivalent circuit, the characteristics of power transmission and soft-switching ability are analyzed in detail, which offers the guidance for resonant tank parameter design. Finally, the feasibility and effectiveness of the proposed converter are fully verified by the experimental results from a 1.65kW prototype based on GaN-HEMT with peak efficiency of 98.4%. © 2019, Electrical Technology Press Co. Ltd. All right reserved.
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页码：543 / 552
页数：9
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