Journal: IEEE Transactions on Magnetics
Authors: Gyu-Hong Kang, Jin Hur, Hyuk Nam, Jung-Pyo Hong, Gyu-Tak Kim.
DOI: 10.1109/TMAG.2003.810330
This paper deals with the analysis for the irreversible demagnetization characteristics of a ferrite-type permanent magnet in the line-start motor using the two-dimensional finite-element method (2-D FEM). The demagnetizing currents are calculated from the transient analysis in the combination voltage equation with mechanical dynamic equation, and peak currents are applied to the irreversible demagnetization analysis computed by 2-D FEM. The nonlinear characteristic of the magnetic core is considered as well as that of a permanent magnet on the B-H curve in the analysis of irreversible demagnetization.