A Versatile Simulation-Assisted Layered Mesh Analysis for Generalized Litz Wire Performance

This article introduces a semi-analytical method of predicting ac loss in commercial Litz wires. Simple finite-element simulations are used to compute the resultant proximity fields coil system arbitrary geometry. The approach addresses non-ideal wire construction by applying surrogate skin effect model inform and distribute current over cross Section into segmented layers. simplifies problem 2-D, dc simulation with low number mesh elements. Analytical solutions then frequency-dependent due effect. is demonstrated using two 14 American Wire Gauge (AWG) equivalent wires very different constructions validated experimental results from several configurations. Finally, an appeal made manufacturers provide empirical “fabrication factor” specification that would allow consumers predict performance conductor their application.