Calculation of the ac to dc resistance ratio of conductive nonmagnetic straight conductors by applying FEM simulations
This paper analyzes the skin and proximity effects in different conductive nonmagnetic straight conductors’ configurations subjected to applied alternating currents and voltages. These effects have important consequences, including a rise of the ac resistance, which in turn increases power loss, thu...
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2015 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/77125 |
| Acceso en línea: | https://hdl.handle.net/2117/77125 https://dx.doi.org/10.1088/0143-0807/36/5/055019 |
| Access Level: | acceso abierto |
| Palabra clave: | Skin Simulation Finite element method simulation current density ac resistance finite element method power loss RECTANGULAR CONDUCTORS SKIN Elements finits, Mètode dels Àrees temàtiques de la UPC::Enginyeria electrònica |
| Sumario: | This paper analyzes the skin and proximity effects in different conductive nonmagnetic straight conductors’ configurations subjected to applied alternating currents and voltages. These effects have important consequences, including a rise of the ac resistance, which in turn increases power loss, thus limiting the rating for the conductor. The alternating current (ac) resistance is important in power conductors and bus bars for line frequency applications as well as in smaller conductors for high frequency applications. Despite the importance of this topic, it is usually not analyzed in detail in undergraduate and even in graduate studies. For this purpose, this paper compares the results provided by available exact formulas for simple geometries with those obtained by means of two-dimensional finite element method (FEM) simulations and experimental results. The paper also shows that FEM results are very accurate and more general than those provided by the formulas, since FEM models can be applied in a wide range of electrical frequencies and configurations |
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