Title :
Analysis of magnetizing process using discharge current of capacitor by 3-D finite-element method
Author :
Kawase, Yoshihiro ; Yamaguchi, Tadashi ; Mimura, Noriyo ; Igata, Masao ; Ida, Kazuo
Author_Institution :
Dept. of Inf. Sci., Gifu Univ., Japan
fDate :
3/1/2002 12:00:00 AM
Abstract :
When permanent magnets are magnetized using the coils in the stator of a motor, it is very important to be able to estimate the residual flux distribution in the permanent magnets. Therefore, we have developed a method to calculate the residual flux distribution using the three-dimensional (3-D) finite-element method taking into account the magnetizing process that uses the discharge current of a capacitor. We have also analyzed the effects of the eddy currents in the permanent magnet during the magnetizing process on the residual flux distribution. The accuracy of the method was confirmed by a comparison between the calculated average magnetization ratios and the measured ones
Keywords :
capacitors; eddy currents; finite element analysis; magnetic fluids; magnetic flux; magnetisation; permanent magnet motors; synchronous motors; Nd-Fe-B; Nd-Fe-B sintered magnets; average magnetization ratios; capacitor discharge current; eddy currents; flux density distribution; magnetizing process; permanent magnet synchronous motors; residual flux distribution; stator coils; three-dimensional finite-element method; Capacitors; Coils; Eddy currents; Finite element methods; Magnetic analysis; Magnetic flux; Magnetization; Permanent magnet motors; Permanent magnets; Stators;
Journal_Title :
Magnetics, IEEE Transactions on
