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J4  2010, Vol. 44 Issue (8): 1540-1547    DOI: 10.3785/j.issn.1008-973X.2010.08.019
电气工程     
新颖软开关推挽LLC谐振变流器及其拓扑延拓
陈威, 吕征宇
浙江大学 电气工程学院, 浙江 杭州 310027
Novel soft-switching push-pull type LLC resonant converter and
its topology investigation
CHEN Wei, LU Zheng-yu
College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
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摘要:

为了解决在线式不间断电源系统(UPS)中,采用备用电池供电的升压直流直流(dcdc)变流器所存在的输入输出增益比和效率不能兼顾的问题,提出一种新颖的高效高增益升压推挽式隔离型电感电感电容(LLC)软开关串联谐振变流器.该变流器中的所有功率半导体元件均能实现软开关.通过工作在升压(Boost)模式下获得的高输入输出增益可有效减少变压器匝比,提高转换效率.内部驱动电路因基于推挽电路的结构而得以简化,该变流器适用于UPS电源系统中备用电池的能量升压转换场合.描述该变流器的工作原理和电路特性后,给出其拓扑的各种变化及变形结构,并用一台容量为600 V·A的双路输出样机验证了该变流器的有效性和实用性.

Abstract:

To overcome the limitation that the battery sourcing stepup dcdc converters can not possess the merits of hicgh efficiency and highdc gain both in the application of backup mode for online uninterrupted power supply (UPS) systems, a novel stepup pushpull type isolated inductorinductorcapacitor (LLC) series resonant dcdc converter was proposed. This converter possessed the softswitching advantage for all power semiconductors. When operated under Boost mode, the proposed converter obtained a high dc gain, which reduced the transformers turnratio to improve conversion efficiency. The inside lowside gate driving circuit was also simplified because of inherit of the pushpull topology. Therefore, the proposed converter is quite suitable for the stepup conversion under battery souring mode in UPS systems. The detail operation principles,characteristics and topdogy variations of the conveter were presented. the validity and applicability were also verified by a 600 V·A dual outputs prototype.

出版日期: 2010-09-21
:  TM 46  
基金资助:

国家自然科学基金资助项目(50677063) .

通讯作者: 吕征宇,男,教授,博导.     E-mail: eeluzy@cee.zju.edu.cn
作者简介: 陈威(1982-) 男,浙江杭州人,博士,从事电力电子电路拓扑、电源模块软开关技术和电源系统集成研究.E-mail:lionhc@163.com
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引用本文:

陈威, 吕征宇. 新颖软开关推挽LLC谐振变流器及其拓扑延拓[J]. J4, 2010, 44(8): 1540-1547.

CHEN Wei, LV Zheng-Yu. Novel soft-switching push-pull type LLC resonant converter and
its topology investigation. J4, 2010, 44(8): 1540-1547.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2010.08.019        http://www.zjujournals.com/eng/CN/Y2010/V44/I8/1540

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