期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2015
卷号：3
期号：3
DOI：10.15680/ijircce.2015.0303185
出版社：S&S Publications
摘要：This paper mainly deals with the Electro Magnetic Interference (EMI) in switching power supplies. The EMIconsists of two sources of noise namely common mode and differential mode noises. Due to interference, the efficiency of theequipment reduces and sometimes the equipment may be damaged. To avoid this effect EMI filters are designed like Activeand passive filters. Passive Electromagnetic Interference (EMI) filters are replaced by active EMI filters to deal withhigh-frequency noise interference. Based on the measurement of noise EMI filter is designed to avoid interference. Peakcurrent mode control is mostly used for power factor correction. The constant output voltage is also maintained. The EMI filtertogether with the boost inductor has to attenuate the high frequency (HF) voltage component to the mains side of the converter.With it, the optimum switching frequency and ratio of the ripple and fundamental current amplitude with respect to volume andlosses are found. Procedure for designing ac line EMI filters is presented. This procedure is based on the analysis of conductedEM1 problems and the use of a noise separator. Design of active EMI filters leads to optimal component values and eliminatesCM noise over a wider frequency range
