Determination of temperature in automotive high-voltage cables of finite length with dynamic current profiles |
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| Authors: | Florian Loos Karl Dvorsky Hans-Dieter Liess |
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| Affiliation: | 1. Institut für Mathematik und Bauinformatik, Fakult?t für Bau- und Vermessungswesen, Universit?t der Bundeswehr München, D-85579 Neubiberg, München, Germanyflorian.loos@unibw.de;3. Institut für Mathematik und Rechneranwendung, Fakult?t für Luft- und Raumfahrttechnik, Universit?t der Bundeswehr München, D-85579 Neubiberg, München, Germany;4. Institut für Physik, Fakult?t für Informationstechnik und Elektrotechnik, Universit?t der Bundeswehr München, D-85579 Neubiberg, München, Germany |
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| Abstract: | To avoid overheating of essential components and generation of hot spots in modern vehicles, especially hybrid and electrical cars, cables have to be dimensioned correctly. Dynamic current profiles with high peak currents make an adequate dimensioning difficult. We present a new approach to calculate the temperature distribution in current carrying shielded cables under non-constant current loads. The influence of attached materials is respected as well as different environment conditions. The specific modelling equations entail a distinction of cases, depending on the magnitude of current loads. Moreover, simulation and measurement results are compared and show good accordance. Further advantages concerning calculation times and industrial practicability are presented. |
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| Keywords: | electric shielded cables transient temperature determination non-constant current profiles interpolation methods Joule heating |
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