A hysteresis model for power ferrites

We present an extension of the static Limiting Loop Proximity (L
²
P) hysteresis model to incorporate reversible magnetization and rate-dependency to model power ferrite cores and, possibly, ferromagnetic materials based on iron and nickel for low-frequency applications. The proposed model is based on the combination of the L
²
P static model with a dynamical discrete linear filter of an infinite impulse response. Two cases where the hysteresis depends on the excitation frequency are presented using synthetic data to validate de capacity of the model to behave as real physical cores. The particle swarm optimization is employed as a method for parameter estimation in the resulting nonlinear static-dynamic model. Simulation results are presented indicating that we brought to the power electronic community a promising and alternative core model for magnetic components used in renewable power sources.