电源学报2024，Vol.22Issue(2)：47-54,8.DOI:10.13234/j.issn.2095-2805.2024.2.47
Boost端耦合电感三管交错并联升降压电路研究
Research on Interleaved Three-switch Buck-Boost Circuit with Co-directional Coupling Inductor on Boost Side
摘要
Abstract
The two-switch Buck-Boost converter has been widely applied in step-up and step-down scenarios.However,it usually operates under hard switching conditions in the existing various control and modulation modes.In addition,its interleaved control circuit is usually complicated.A three-switch interleaved Buck-Boost circuit with co-directional coupling inductor and its control method are given based on the characteristics of co-directional coupling inductor.First,the coupling process of the coupling inductor during the switching process is analyzed under a large coupling coefficient,based on which the circuit's fundamental operating principle is given in detail.Then,it is concluded that the extended duty cycle and soft switching of Boost-side power switches can be achieved in the discontinuous self-induction current mode,so as to avoid the synchronous and current-sharing circuits in the two-phase interleaved control circuit,thus obviously simplifying the control circuit.Finally,simulation and experimental results verified the analysis results.关键词
升降压/同向耦合电感/软开关/占空比扩展Key words
Buck-Boost/co-directional coupling inductor/soft switching/extended duty cycle分类
信息技术与安全科学引用本文复制引用
张先进,张小倩,吴迪..Boost端耦合电感三管交错并联升降压电路研究[J].电源学报,2024,22(2):47-54,8.基金项目
国家自然科学基金资助项目(51707078) （51707078）
南通理工学院科学研究资助项目(ZX202110)This work is supported by National Natural Science Foundation of China under the grant 51707078 （ZX202110）
Science and Technology Foundation of Nantong Institute of Technology under the grant ZX202110 （）
