Influence of skin effect on magnetic flux distribution in voltage driven devices with laminated cores

The paper aims to analyse the role of eddy currents flowing within the laminations of a three-limbed magnetic core. This structure is fitted with two windings on the external legs; separate electric circuits supply each coil, so that different flux paths can be imposed, including the case of rotational flux evolution. The analysis is developed by means of a Finite Element approach involving the diffusion phenomena in a generalized constitutive model based on the solution of 1D field problems. The model also handles vector hysteresis through a Preisach-like model