航空电源航空科技重点实验室学术年会(APSC’2005)论文集 集肤和邻近效应对平面磁性元件绕组损耗影 响的分析 旷建军，阮新波，任小永，郗焕 （南京航空航天大学航空电源重点实验室， 江苏 南京 210016） Analysis of Skin and Proximity Effects on Winding Losses in Planar Magnetic Components KUANG jianjun, RUAN xinbo, REN xiaoyong, XI Huan (Nanjing University of Aeronautics and Astronautics, Nanjing 210016,China) Abstract：Magnetic components may be reduced in size by operating at high frequency. But the high frequency eddy effects (skin and proximity effects) raise the winding losses. Based on one-dimensional model for windings of magnetic components, this paper analyzes the eddy effects in planar magnetic components. By 的变化趋势。指出简单地把厚绕组分割为薄绕组的并 联不能减少绕组的损耗。并分析了利用原副边绕组交 叉换位技术减少变压器绕组损耗的原理。通过有限元 分析软件和实验证实了分析结果的正确性和有效性。 关键词：集肤效应；邻近效应；绕组损耗；平面磁性 元件 utilizing orthogonality between skin effect and 1 引言 proximity effect under one-dimensional condition, the tendency of the losses caused by skin effect and 平面磁性元件是一种呈低高度扁平状的 proximity effect individually under different winding 变压器或电感，适应当今开关电源“短、小、 thickness and frequency is concluded. The conclusion 轻、薄”的发展趋势，在 DC/DC模块电源中 that simply paralleling the thin windings divided from 得到了广泛的应用。为了减少开关电源中磁 the original thick winding can’t decrease the winding 性元件的体积，开关频率一直在不断的提高， losses is given. Meanwhile the principle is analyzed by 已有电源厂商把开关频率提高到 1MHz。随着 using interleaving techniques to decrease winding losses 开关频率的提高，电磁场的高频效应（集肤 in transformer. The effectiveness of the analysis is 和邻近效应）导致绕组的损耗迅速增加。国 verified by the Finite Element Analysis(FEA) and test. 内外对磁性元件绕组中的高