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2D Modeling of Litz Wire : Reduced Model and its Application for Switched Reluctance Machine

Abstract : The strong correlation between the level of eddy current losses and the winding geometry shows all the necessity of special attention to the manner of disposition of coils in machine slots and to the wire type whether it's solid or stranded conductor. Since the transposition of winding strands is a recommended solution to reduce eddy current losses, this article suggests an electromagnetic analysis of complex stranded conductors such as litz wires. It is based on a 2D finite element model. A model reduction is also proposed. It allows benefiting from only one complete finite element solution to find fast solutions in the slots domains when any variation of geometrical or physical data occurred. It allows different problem adapted meshes. Seeing that it prevents the Newton-Raphson iterations, the reduction model presents clear interests in repetitive analysis such as winding optimization processes. Index Terms-finite element (FE) analysis, eddy currents, litz wire (LW), model reduction, switched reluctance machine (SRM).
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Submitted on : Tuesday, October 27, 2020 - 11:09:25 AM
Last modification on : Wednesday, October 28, 2020 - 4:25:06 PM

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  • HAL Id : hal-01531331, version 1

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Moustafa Al Eit, Frédéric Bouillault, Claude Marchand, Guillaume Krebs, Laurent Santandréa. 2D Modeling of Litz Wire : Reduced Model and its Application for Switched Reluctance Machine. Compumag 2015, Jun 2015, montreal, Canada. ⟨hal-01531331⟩

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