4.0 Transformer cores
Core power losses comprise, the hysteresis losses from magnetising and de-magnetising the core through the BH loop.
PLUS Eddy Current Losses: -
Cross Section of: Ferrite Laminated Solid Core
In a solid core, current can circulate inside the core material generating I2R (resistive) losses.
Iron cores are usually laminated to restrict the current path and reduce this effect.
Ferrite cores have high resistance and low eddy current losses.