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Increased pollution in the protective earth
Chalmers University of Technology.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.
1997 (English)In: EPE '97: 7th European Conference on Power Electronics and Applications, 8-10 September 1997, Trondheim, Norway, EPE Association , 1997, 823-828 p.Conference paper (Refereed)
Abstract [en]

EMC has received increasing interest over past decade. Several standards regarding EMC have been developed. Although manufacturers design and manufacture interference-free equipment in accordance with standards, disturbances are still a problem. According to the current EMC legislation, conducted emissions are to be measured using a LISN between the utility grid and the equipment under test. However, it should be noticed that there is no correspondence between the EMC environment measured at an installation site and the EMC environment measured by the LISN. In this paper some documented cases where electrical equipment are disturbing each other are highlighted and EMC standards are discussed. In the paper it is shown that EMC related problems occurring in the examples all have the same origin: current flow in the PE. The leakage current is fed into the PE via the filters or by a capacitive coupling to the ground. The increased use of power electronic equipment might lead to the need of a complete re-build of the entire grid. An alternative solution to the problem would be to stop the leakage current from being fed into the PE.

Place, publisher, year, edition, pages
EPE Association , 1997. 823-828 p.
Research subject
Energy Engineering
URN: urn:nbn:se:ltu:diva-37768Local ID: be348410-a4b9-11dc-8fee-000ea68e967bISBN: 90-75815-02-06OAI: diva2:1011266
European Conference on Power Electronics and Applications : 08/09/1997 - 10/09/1997
Godkänd; 1997; 20071207 (marlun)Available from: 2016-10-03 Created: 2016-10-03Bibliographically approved

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