基于双边绕组的高PCB利用率集成磁元件设计

Design of High PCB Utilization Integrated Magnetics Based on Both Side Windings

在高功率密度电力电子变换器中,电感和变压器的尺寸占有越来越高的比重。为了提升变换器的功率密度,高频平面磁元件得到广泛应用和研究。磁元件的集成能够实现绕组或磁路的共用,从而大幅减小了磁元件总体积。但是,目前平面型的集成磁元件普遍存在印制电路板(PCB)绕组空间利用率低下的问题。针对该问题,提出了变压器双边绕组与谐振电感同时集成在同一谐振电感磁柱结构,从而实现了PCB空间完全充分利用,减小了磁元件体积。此处建立了分析模型,最后通过实验验证了所提集成磁元件的可行性和优势。

In high power density power electronic converters,the size of inductors and transformers accounts for an increasingly significant proportion.In order to enhance the power density of converters,high-frequency planar magnetic components have been widely applied and studied.The integration of magnetic components allows for the sharing of windings or magnetic circuits,thereby significantly reducing the overall volume of the magnetic components.However,currently available planar integrated magnetic components generally suffer from low utilization of printed circuit board(PCB)winding space.To address this issue,a structure is proposed where transformer both side windings and resonant inductors are integrated on the same resonant inductor column,achieving full utilization of PCB space and reducing the volume of the magnetic components.An analysis model is established,and the feasibility and advantages of the proposed integrated magnetic components are validated through experiments.