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多相非隔离双向DC-DC变换器新型耦合电感设计 被引量:3

Design of new coupled-inductor for non-isolated bidirectional DC-DC converters
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摘要 多相交错型磁耦合双向DC-DC变换器(BDC)的耦合电感普遍存在设计复杂、开模昂贵、局部温升较高以及耦合非对称等缺点。提出一种新型"EIE"结构耦合电感器,应用于两两对称耦合的四相磁集成BDC。根据电感集成原理和磁路等效原则,分析其磁通及气隙分布,建立考虑边缘磁阻和气隙磁阻的磁路模型,推演出耦合磁件自感、互感及耦合系数,给出可实现磁通对称化和解耦集成的设计原则和方法。该结构耦合电感器可实现耦合系数高自由度调节,并解决了传统"E"形铁芯构造的耦合电感器中边缘气隙磁通损耗较高的缺点。通过有限元仿真和实验,验证了磁路理论和设计方法的正确性,以及在稳态损耗、暂态响应和效率等方面优越性。 The coupled inductor of multi-phase interleaving magnetic integration bidirectional DC-DC converter(BDC)has several shortcomings,including:complicated design,expensive mode,higher local temperature rise,and asymmetry of coupling inductance.A new type of“EIE”structure-coupled inductor applied to four-phase magnetic integrated BDC with symmetric coupling was proposed in this paper.According to the principle of inductance integration and magnetic circuit equivalent,the magnetic flux and its air gap were analyzed,and the magnetic circuit model considering the marginal reluctance and gap reluctance was established.The formulas of self-inductance,mutual inductance and the coupling coefficient were deduced,and the design principles and methods for realizing flux symmetry and decoupling integration were presented.The coupled inductor retains the advantages of coupling coefficient adjustment with high degree.The drawback of high air-gap fringing flux losses in conventional E-shape coupled inductor structure is solved.The correctness of magnetic theory and design method are verified by finite element simulation and experiments.As well as its superiority in terms of steady-state loss,transient response,efficiency is still tested.
作者 刘朝辉 刘海峰 张宁 LIU Chao-hui;LIU Hai-feng;ZHANG Ning(Hebei Electric Power Maintenance Company,Shijiazhuang 050051,China;Hebei Electric Power Company,Shijiazhuang 050051,China)
出处 《电力科学与技术学报》 CAS 北大核心 2018年第1期38-45,共8页 Journal of Electric Power Science And Technology
基金 国家自然科学基金(51177067 50607007)
关键词 “EIE”型耦合电感 交错并联磁集成 耦合系数 双向DC-DC 磁路模型与仿真 “EIE”shape coupled inductors interleaving magnetic integration coupling coefficient bidirectional DC-DC converter magnetic circuit model and simulation
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