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非对称结构多路输出LLC谐振型变换器
引用本文:顾亦磊,杭丽君,吕征宇,钱照明. 非对称结构多路输出LLC谐振型变换器[J]. 中国电机工程学报, 2006, 26(5): 82-87
作者姓名:顾亦磊  杭丽君  吕征宇  钱照明
作者单位:浙江大学电气工程学院,浙江省,杭州市,310027
基金项目:国家自然科学基金项目(50237030ZD)。~~
摘    要:针对有最低负载限制的多路输出电源系统,提出一种非对称结构LLC谐振型变换器。该变换器副边电路可以根据各路输出功率的大小灵活采取不同的结构。所以该结构适用于主输出功率较大,辅输出功率较小的场合。另外,该变换器的所有功率半导体器件都工作于软开关状态,所以适用于高频高功率密度的场合。文中详细分析该变换器的非对称工作原理,软开关过程,并给出关键的参数设计方法。最后仿真和实验结果进一步验证了以上分析的正确性。

关 键 词:电力电子  非对称结构  谐振  多路输出  软开关
文章编号:0258-8013(2006)05-0082-06
收稿时间:2005-10-28
修稿时间:2005-10-28

Multi-output LLC Resonant Converters with Asymmetrical Structures
GU Yi-lei,Hang Li-jun,L Zheng-yu,QIAN Zhao-ming. Multi-output LLC Resonant Converters with Asymmetrical Structures[J]. Proceedings of the CSEE, 2006, 26(5): 82-87
Authors:GU Yi-lei  Hang Li-jun  L Zheng-yu  QIAN Zhao-ming
Affiliation:GU Yi-lei,Hang Li-jun,L(U) Zheng-yu,QIAN Zhao-ming
Abstract:Multi-output LLC resonant topologies with asymmetrical structures dedicating to multi-output power supply systems, having limitation of lowest load, are presented in this paper. According to output power level, different configuration of secondary output end can be flexibly adapted. Consequently, the presented topology is a favorable candidate for such application as whose outputs are not symmetrical, i.e. compared with auxiliary output, power level of main output is comparatively higher. In addition, all switches of the very topology operate under the condition of ZVS and therefore it is applicable to such occasion as high frequency, high power density. Asymmetrical operating principle and ZVS operation are analyzed in detail, moreover key parameter design considerations are presented. Finally, the analysis above is verified both by simulation and experiment.
Keywords:Power electronics  Asymmetrical structure  Resonant  Multi-output  Soft switching
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