Hysteresis modeling of anisotropic and isotropic bonded NdFeB PM utilizing the jiles-atherton hysteresis model

In order to analyze the magnetic properties of anisotropic and isotropic bonded NdFeB permanent magnet, the hysteresis characteristics should be modeled accurately. This paper presented an algorithm to model the anisotropic and isotropic magnet by using scalar and vector Jiles-Atherton hysteresis model, respectively. The algorithm based on the physical theory yields five material related parameters: the saturation magnetization, the mean exchange coupling between the effective domains, the effective domain density, the energy-dissipative coefficient, and the flexibility of the domain walls. The five parameters of Jiles-Atherton hysteresis model are identified by using particle swarm optimization algorithm.