ZVS-ZCS-Buck-PWM变换器也被称为全软开关Buck电路,如图所示。其中Q1为主开关管,Q2为辅助开关,Lr与Cr分别为谐振电感和谐振电容,该电路的基本工作原理是利用Lr的续流作用,当Q2导通时,即使导通Q1,也不会有电流流过,从而实现了Q1的ZCS导通;另外,当Q2关断时,由于Q1已导通,由Lr,Cr组成的并联谐振网络并联在Q2两端,...
This paper proposes a new ZVS-PWM Buck converter, which is based on the active clamping technique. With an active clamping cell, the voltage ringing caused by the resonance between the auxiliary inductor and parasitic capacitor is eliminated. Zero voltage switching (ZVS) can be achieved for all...
BUCK BOOST ZCS ZVS PWM 电力电子电路仿真课程设计报告 设计课题：BUCK ZCS PWM 主电路设计与仿真 专业班级： 学生姓名： 07级应用电子（1）班 指导教师： 薛金龙 设计时间： 魏艳君 2010.12.20-2010.12.31 电气工程学院
摘要 本文介绍了一种单管ZVS-ZCS-Buck-PWM变换器,简述了其工作原理.讨论了相关器件的参数设计问题,仿真证明了理论分析的正确,该变换器在高频开关电源中有很好的应用前景. 关键词 零电流开关;零电压开关;软开关 被引量 3 收藏 全部来源 免费下载 求助全文...
L. Freitas "A High-Power High-Frequency ZCS-ZVS-PWM Buck Converter Using A Feedback Resonant Circuit", IEEE PESC Conf. Rec. , pp.330 -336 1993L. Freitas, and P Gomes, "A High-Power High- Frequency ZCS-ZVS-PWM Buck Converter Using A Feedback Resonant Circuit," IEEE PE...
A novel ZCS-ZVS-PWM DC-DC buck converter for high power and high switching frequency: analysis,simulation and experimental results[C] APEC 1993: 693-699.L. C. de Freitas, D. F. da Cruz, and V. J. Farias, "A novel ZCS-ZVS-PWM dc-dc buck converter for high power and high ...
Specifically, a discontinuous buck-boost converter is analyzed, where the ZVS transitions are obtained by managing reactive power between converter reactive elements, and modulation timing is based on three real-time variables. The different methods have been compared on one particular model item, the...