电器与能效管理技术Issue(23)：23-26,4.DOI:10.16628/j.cnki.2095-8188.2016.23.005
水冷散热结构对电磁干扰抑制的研究
Research of Water Cooling Structure on EMI Suppression
摘要
Abstract
Parasitic capacitance between the heat sink and switching devices is considered the main way for common mode(CM) current.Adverse interference is produced by the conducted EMI.Water cooling heat sink on charger was taken as an example to be analyzed.The structure of existing water cooling heat sink is altered,metal tank is divided into two parts,an insulating seal mounting groove connecting the two parts.One part linking to DC 0 V ground functions as electrostatic shielding and the other linking to ground by chassis.The parasitic capacitance between switching devices and heat sink linking to chassis ground is reduced and the effect of CM current is weakned.The effective CM current suppression of this method was confirmed by the simulation results of two different water cooling radiators.关键词
水冷散热器/寄生电容/共模电流/静电屏蔽Key words
water cooling heat sink/parasitic capacitance/common mode current/electrostatic shielding分类
信息技术与安全科学引用本文复制引用
张浩,石进永,齐连伟,王念春,陈中,黄学良..水冷散热结构对电磁干扰抑制的研究[J].电器与能效管理技术,2016,(23):23-26,4.基金项目
国家电网公司项目(适应复杂环境的水冷电动汽车直流充电机关键技术研究) （适应复杂环境的水冷电动汽车直流充电机关键技术研究）
国家自然科学基金重大国际合作项目(51320105002) （51320105002）
