1.1、滤波器定义: 《GB/T 2900.1-2008电工术语 基本术语》定义:滤波器(Filter)是指按规定的法则设计用来传递输入量的各频谱分量的一种线性二端口器件。通常是为了通过某些频带频谱分量而衰减在其它一些频带内的频谱分量。 滤波器的通用定义:滤波器是集中参数的电阻、电容和电感,以及分布参数的电感、电容构成的网络。...
R. Stevenson "Improved EMI Filter Insertion Loss Test Methods, Equipment and Fixtures", 16 th Annual Capacitor and Resistor and Technology Symposium (CARTS) , 1996
1、有源滤波器的工作原理 有源滤波技术根据应用场合可以分为有源EMI滤波器(Activeelectromagneticfilter,AEF)和有源电力滤波器(Activepowerfilter,APF)。AEF的工作原理是通过注入一个与原噪声电流大小相等,方向相反的补偿信号,以此来达到消去电路中的噪声电流的目的[3]。 APF的工作原理和AEF的相似,只是要消去的是电网...
Precise Measurement Scheme and Experimental Research of EMI Filter Insertion Loss 北京理工大学 区健昌 周阔 田元波 摘要 简要介绍了共模、差模及非对称的测试电路，但都无法精准测量 EMI 滤波器的插入损耗。因此提出一种基于共差模分离器的测量电路，来精准测量插入损耗，并进行了实验验证及分析。该...
EMI电源滤波器插入损耗分析及仿真
5. Insertion Loss Insertion loss measures the performance of a filter, reflecting filters’ ability to attenuate interference signal. It is the ratio of terminal voltage before filter is inserted to that when filter is inserted (measured in dB). It is tested on empty load and 50Ω- 50Ωaccor...
有源滤波技术根据应用场合可以分为有源EMI滤波器(Active Electromagnetic Filter,AEF)和有源电力滤波器(Active Power Filter,,APF)。AEF的工作原理是通过注入一个与原噪声电流大小相等,方向相反的补偿信号,以此来达到消去电路中的噪声电流的目的。 APF的工作原理和AEF的相似,只是要消去的是电网中的谐波和无功电流。二者...
In addition, an estimation technique is presented that gives approximate insertion loss of the filter. The performance of this technique was tested on several filters and the data obtained were checked by insertion loss measurement. The ... J Drinovsky,J Svacina - 《Radioengineering》 被引量: ...
A filter design using insertion loss method (ILM) and Genetic Algorithm (GA) is presented in this paper. Many techniques have been proposed for the design and analysis of filter circuit, but the insertion loss method is generally preferr... PMC Aparna Thube 被引量: 1发表: 2014年 Design an...
Keywords:electromagneticinterference;powerfilter;insertionloss;screen;dynamicstate;test 2 EMI电源滤波器插入损耗介绍 1 引言 EMI电源滤波器是低通滤波器,它几乎能无衰减地把直流或低频(50Hz、400Hz等)交流电源功率传送 2.1 滤波器基本电路介绍到设备上去,而对经电源传入的EMI噪声进行衰减,保护设备不受干扰;同时又能...