电源学报2025，Vol.23Issue(1)：243-250,8.DOI:10.13234/j.issn.2095-2805.2025.1.243
基于交错多地层结构的平面磁集成LCL-EMI滤波器设计与实现
Design and Implementation of Planar Magnetic Integrated LCL-EMI Filter Based on Interleaved Multi-GND-layer Structure
摘要
Abstract
Harmonic and electromagnetic interference(EMI)filters are two important output filters used to sup-press the harmonic distortion and EMI noise in grid-connected inverters.Harmonic and EMI filters are combined by planar magnetic integration to reduce the volume and weight.Through the selection of an appropriate magnetic core,the common mode and differential mode inductors are integrated into the same core by drawing PCB planar coil.To integrate the discrete capacitors and further realize the planar magnetic integration of EMI filter,the dielectric is inserted into the PCB and the layer connection mode is reasonably planned.A symmetric LCL filter is used to replace the traditional asymmetric structure of magnetic integration.Furthermore,by designing the air gap in the center pillar of the magnetic core and reasonably arranging the planar windings,the inductors of LCL harmonic filter are also integrated into the same magnetic core unit to form an LCL-EMI planar magnetic integrated filter.A gallium nitride single-phase inverter platform was built,and the LCL-EMI filter with planar magnetic integration was experimentally analyzed to verify the feasibility of the planar magnetic integration method.关键词
逆变器/平面磁集成/LCL滤波器/EMI滤波器Key words
Inverter/planar magnetic integration/LCL filter/electromagnetic interference(EMI)filter分类
信息技术与安全科学引用本文复制引用
叶鑫,陆子健,刘艺涛..基于交错多地层结构的平面磁集成LCL-EMI滤波器设计与实现[J].电源学报,2025,23(1):243-250,8.基金项目
国家自然科学基金资助项目(52007122)This work is supported by National Natural Science Foundation of China under the grant 52007122 （52007122）
