Finite Difference Time Domain Method To The Design Of Applied Research, In-car Electronic Equipment, Electromagnetic Compatibility

With the breakthrough of the total distance of electrified railway over20,000 kilometers and the Success of the Sixth Railway Speed-upCampaign, electrified railage has become the main body of passengertransport and freight of our country. It also symbolize that our countryrailway transportation has made great strides forward to the goal of highspeed heavy load. Simultaneously it has brought us more research topic,the electromagnetic compatibility problem of electronic equipment ofelectric locomotive is an important question which is worth payingattention. Under this premise, this article mainly makes theoretical andpractical studies on the 110V switching power supply electromagneticcompatibility design.The main work of this article is to analyzes and solve theelectromagnetic radiation problem existing in the vehicular electronicequipment electromagnetic compatibility design with method of theFinite Difference Time Domain (FDTD). Firstly we introduces thetechnology and elementary knowledge about the electromagneticcompatibility, its present development, some basic requests and relatedstandards of the electronic equipment. It also introduces the knowledgerelated to FDTD and the development, mainly introduced the basicprinciple, the numerical value theory and two kinds of main absorptionboundary condition (Mur and PML).On the basis of this theoretical analysis, it put forward somepractical measures to solve the analyzed problem of electromagneticradiations (electric arc and transmission line), makes more detailedtheoretical analysis to those measures (shield and earth), and proposes thesolution to the problem of the locomotive 110V switching power supplyelectromagnetic radiation problem.