摘要
CLLLC谐振变换器存在频率变化范围较大、升压范围较小的问题,不利于元器件设计及优化。针对CLLLC谐振变换器提出一种混合式升压控制策略,减小了频率变化范围,并使升压范围在变频控制的基础上进一步扩大,在实现软开关的同时能适应更宽范围的电压输入,结构可靠、易于实现。利用时域分析法,分析了混合控制下CLLLC谐振变换器的升压特性,并与传统变频控制下的增益特性作对比,通过MATLAB/Simulink仿真验证了所提策略的正确性及有效性。
CLLLC resonant converter has two problems.One problem is the range of frequency variation change is too wide,and another issue is the voltage rise range is too small.Both of them might count against the design and optimization of the electrical component.This article proposed a hybrid boost control strategy for the CLLLC resonant converter to reduce the frequency variation range and expand the voltage rise range based on the variable frequency control.This strategy is reliable and realizable.It adapts to suit a wider range of voltage input while achieving soft switching technology.The voltage rise characteristics of the CLLLC resonant converter under hybrid control were analyzed and compared with the gain characteristics under traditional variable frequency control by using the time-domain analysis method.All in all,the correctness and effectiveness of the proposed strategy are verified by MATLAB/Simulink simulation.
作者
曾进辉
张炜
ZENG Jin-hui;ZHANG Wei(College of Electrical and Information Engineering,Hunan University of Technology,Zhuzhou 412007,China)
出处
《电工电气》
2022年第2期1-8,共8页
Electrotechnics Electric
基金
湖南省自然科学基金项目(2020JJ6082)。
