摘要
逆变器作为光伏并网发电系统中重要的功率转换装置,其开关频率提高带来的电磁兼容问题不可忽视。传统分立电磁干扰(electromagnetic interference,EMI)滤波器的电感和电容体积大,导致功率密度低。对EMI滤波器的无源器件采用磁集成技术,将多个磁性元件绕组集成在一个磁性结构上,对于减少磁元件数量、缩减磁元件尺寸、降低损耗和成本具有重要意义。文中通过选择合适的磁心将共模电感和差模电感的印刷电路板平面线圈集成在一个磁心上,实现平面磁集成。通过插入电介质板和层连接方式的规划,集成滤波电容,进一步减小EMI滤波器体积。通过搭建单相逆变器实验平台,对平面磁集成的EMI滤波器进行实验分析,验证所提方法的可行性。
As an important power conversion device in photovoltaic grid-connected power generation system,the electromagnetic compatibility(EMC)problem caused by the increased switching frequency of inverter cannot be ignored.Traditional discrete electromagnetic interference(EMI)filter have large inductors and capacitors,resulting in low power density.Using magnetic integration technology for passive components of EMI filters to integrate multiple magnetic component windings into one magnetic structure is of great significance for reducing the number of magnetic components,the size of magnetic components,the loss and cost.In this paper,the PCB planar coils of common mode(CM)inductors and differential mode(DM)inductors were integrated in one magnetic core to realize planar magnetic integration.By inserting the dielectric board and layers connection planning,the capacitor was also integrated to further reduce the size of EMI filters.The validity of the proposed fully integration was experimentally verified by building a single-phase inverter experimental platform with a planar integrated EMI filter.
作者
陆子健
叶鑫
刘艺涛
LU Zijian;YE Xin;LIU Yitao(College of Mechatronics and Control Engineering,Shenzhen University,Shenzhen 518060,Guangdong Province,China;Guangdong Key Laboratory of Electromagnetic Control and Intelligent Robots(Shenzhen University),Shenzhen 518060,Guangdong Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2022年第13期4706-4717,共12页
Proceedings of the CSEE
基金
国家自然科学基金项目(52007122)。
关键词
并网逆变器
电磁兼容
电磁干扰滤波器
平面磁集成
grid-connect inverter
electromagnetic compatibility(EMC)
electromagnetic interference(EMI)filter
planar magnetic integration
