Unified One-Cycle Control for Fully Digitalized ZVS Four-Switch Buck-Boost Converter During Bidirectional Power Flow Transition

被引：1
作者：
Jia, Xiangshuai [1 ]
Sha, Deshang [1 ]
Zhao, Yining [1 ]
机构：
[1] Beijing Inst Technol, Adv Power Convers Ctr, Sch Automat, Beijing 100081, Peoples R China
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 2024年 / 39卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Bidirectional power flow; four-switch buck-boost (FSBB) converters; fully digitalized control; unified one-cycle control; zero-voltage switching (ZVS); DC-DC CONVERTER; SCHEME; SYSTEM; MODE;
D O I：
10.1109/TPEL.2024.3405319
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A unified one-cycle control is presented to achieve bidirectional power flow operation for a four-switch buck-boost converter employing fully digitalized control. There is no need for analog comparators or digital-to-analog converters. Based on the new definition of operating modes, modulation can be unified in both the directional operations. One-cycle bidirectional power transition with fully zero-voltage switching (ZVS) can be achieved under various voltage conversion gains. A modified control curve of inductor current is proposed to eliminate the power oscillation during operation, and ZVS can be ensured during the transition. A 450-W prototype using the proposed fully digital control under bidirectional power flow operation is verified successfully.
引用
收藏
页码：11295 / 11307
页数：13
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