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TITLE: Coupled ElectroMagnetic Compatibility - Thermal Modeling of Electrical Wiring Architectures Embedded in Aircraft.
ABSTRACT: The on-going development of “more” or “all” electrical aircraft leads to the design of ever-complex embedded electrical networks, which causes a significant increase of electrical cables to be used within these innovative vehicles. Among the constraints encountered during the definition and integration phases of the network, those related to the electromagnetic compatibility between equipment as well as the management of thermal heating by Joule’s effect become more and more stringent. Thus, this thesis is dedicated to the development of an original methodology enabling the prediction of both induced and crosstalk currents as well as the heating up state in complex bundles of cables. Indeed, literature review explicitly shows that electrostatic and stationary heat transfer phenomena are, from a mathematical standpoint, strictly the same which allows the simultaneous computation of these two problems for an arbitrary network. This research work demonstrates that the determination of primary electrical parameters (per unit length) and the temperature distribution within a given cross-section can be handled with the numerical Method Of Moment (MoM). This choice is motivated by the several inherent advantages of the method like an optimized use of the computer resource and the natural parallelization of the algorithms. The developed numerical tools, intended to be fully integrated in the in-house software suite CRIPTE, has been validated during an experimental campaign that has involved several types of bundles. Although the comparisons between experimental and simulated results comply with each other, experiments reveal the hard task of getting a precise estimation of the heat transfer coefficients, even in a well-controlled environment. Finally, these works open new and very promising perspectives for future EWIS (Electrical Wiring Interconnection System) in term of mass optimization.