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孙明波,马运东,温海涛.应用于超宽输入的LLC谐振变换器设计[J].电源学报,2019,17(1):1-9
应用于超宽输入的LLC谐振变换器设计
Design of LLC Resonant Converter Used in Ultra-wide Input Applications
投稿时间:2016-12-23  修订日期:2018-03-23
DOI:10.13234/j.issn.2095-2805.2019.1.1
中文关键词:  宽输入  LLC  调频  移相
英文关键词:wide input  LLC  frequency modulation  phase shift
基金项目:
作者单位E-mail
孙明波 南京航空航天大学自动化学院, 南京 211106 531870816@qq.com 
马运东 南京航空航天大学自动化学院, 南京 211106  
温海涛 南京航空航天大学自动化学院, 南京 211106  
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中文摘要:
      针对光伏、风电等新能源输出不稳定的特点,在二极管箝位的全桥三电平LLC谐振变换器的基础上,提出了一种应用于超宽输入的控制策略。该变换器可通过控制开关逻辑,灵活地选择输入源进行供电,同时在每种固定的输入下,辅以调频控制及定频移相控制,实现高增益比。详细分析了不同模式下的电路拓扑、开关逻辑以及模式之间的切换方案,并在不同负载下进行了相关的实验,有效验证了该变换器在宽输入、变功率的苛刻环境下的普遍适用性。
英文摘要:
      According to the characteristics of photovoltaic, wind power, and other new energies, a control strategy for ultra-wide input applications was purposed based on a diode clamp full-bridge three-level LLC resonant converter. This converter can flexibly select the supply power by controlling the switching logic; meanwhile, it used the frequency modulation control and fixed frequency phase shift control to achieve a high gain ratio. The circuit topology, switching logic, and the switching scheme between different modes were analyzed in detail. In addition, the related experiments were conducted under different loads, which effectively verified the general applicability of the designed converter in the harsh environment of ultra-wide input and variable power.
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