Analysis and Modelling of a Ring Core Inductor under Saturation Effect

This work presents an analytical model for ring-core inductors that accounts for the effect of saturation of the soft magnetic material that makes up the core. The model has been formulated in terms of the physical and geometrical properties of the coil that affect the magnetization of the material, and was obtained under certain hypotheses related to the nature of ferromagnetic materials. An heuristic algorithm has been used to determine the value of the parameters of the model to account for real performance of two hanmade inductors manufactured to validate the proposed method. This method intends to be first step towards the development of a tool for the design and optimization of inductors, transformers and common mode chokes.