A Study Of Conducted Interference Testing And Corrective Measures For House Appliances

With the rapid development of technology, electrical and electronic services get asignificant development and wide use. But the electromagnetic interference is becomingmore and more serious. The effectiveness of corrective measures is vital in reducing thecost and shortening the production cycle.The thesis mainly provides an overview of how the conducted interference couples,then introduces the EMI filters, analysis the why the conducted interference happens andhow to correct the house appliances in EMC.The thesis The thesis is organized in four parts: firstly it provides an overview of theEMC theory and the prospect.Secondly the thesis introduces coupling path of conducted interference and simulatesit based on HFSS、CST in practice, then simply show the layout and the uncertainty oftesting.Thirdly, the EMI filters and filter components is researched, the characteristics in highfrequency is analyzed based on Matlab; the cause of the EMI of house appliances issimulated base on Matlab. Then choose a vaccum cleaner as example to show how tosuppress the CM and DM interference respectively and show the simulation of its filteringeffect and insertion loss.Finally, the thesis summarizes the entire work and the future prospect of the relevantwork.This work intends to combine the theory with practice, not only the coupling path andcause of the conducted interference, but also the simulation based on various softwares areanalyzed. With practice of the electronic market in SuZhou, the study of testing ofconducted interference and corrective measures is relaying on my internship.