中国电机工程学报2016，Vol.36Issue(21)：5918-5929,12.DOI:10.13334/j.0258-8013.pcsee.160155
直流纳电网中用于高频隔离的 CLLC型双向直流变压器的模态分析与优化设计
Mode Analysis and Optimal Design of CLLC-Type Bidirectional DC-DC Transformers for High-frequency Isolation in DC Nanogrids
摘要
Abstract
With the merits of simple control strategy and high conversion efficiency, the recently proposed CLLC-type bidirection DC-DC transformer (CLLC-BDCT) has become an option for high-frequency isolation between the low voltage dc nanogrid and grid. However, owing to the complexity of operation behavior, CLLC-BDCT is hard to design and apply. This paper first pointed out the inaccuracy of the fundamental harmonic approximation (FHA) in the study of CLLC-BDCT. Specific operation mode description and analysis were carried out. Compared to FHA, the description and analysis not only revealed the diversity of operation modes but also made the exact prediction for the operation behavior and characteristic of CLLC-BDCT. On this basis, the correlations between the passive parameters and the zero voltage switching (ZVS), DC voltage gain and conduction loss were respectively analyzed. With these analyses, the influences of the resonant elements on control stability and operational efficiency were clarified separately. And then an optimum design methodology for the resonant parameters of CLLC-BDCT was presented. At last, a 1.6kW CLLC-BDCT prototype with 380V output and input was built. The experiment results verify the proposed analysis procedures and the design methodology for CLLC-BDCT.关键词
双向直流变压器/CLLC/直流纳电网/高频隔离/运行模态分析/优化设计Key words
bidirectional DC-DC transformer/CLLC/DC nanogrid/high-frequency isolation/operation mode analysis/optimal design分类
信息技术与安全科学引用本文复制引用
吕正,颜湘武..直流纳电网中用于高频隔离的 CLLC型双向直流变压器的模态分析与优化设计[J].中国电机工程学报,2016,36(21):5918-5929,12.基金项目
国家高技术研究发展计划(863计划)(2015AA050603)；河北省自然科学基金项目(E2014502109)。The National High Technology Research and Development Program (863 Program)(2015AA050603) （863计划）
Natural Science Foundation of Hebei Province (E2014502109) （E2014502109）
