Reply To: Eddy effects vs. Core loss

[HDLI]

Here are some information regarding eddy current loss and core loss.
1). The core loss includes the eddy current loss. There are two different methods to calculate the losses in FEA, that you are using now.
2). For the eddy current loss of using "set eddy effect", Maxwell calculates induced current and ohmic losses with the eddy current effect based on the conductivity and current distribution. Thus, we could see a closed current loop in this 3D model and there are current and losses at two vertical edges.
3). For the core loss of using "set core loss", Maxwell uses core loss model of materials properties, flux density and dynamic core loss equation to calculate the core loss. It may not present the the closed loop for the eddy current, so with the narrow plane (smaller than coil size), the losses distribution might not be perfect.
4). Because of this particular geometry with narrow steel plane and different calculation methods, the core loss distribution would not be very good to present the eddy current. It should be better if using a wide steel plane.
5). I agreed that current distribution will affect the eddy current losses, especially with skin effect if using a high frequency.
Thanks.

HDLI