Title :
Simulations and experiments on eddy current in Nd-Fe-B magnets
Author :
Aoyama, Y. ; Miyata, K. ; Ohashi, K.
Author_Institution :
Shin-Etsu Chem. Co. Ltd., Fukui, Japan
Abstract :
The eddy current loss of a Nd-Fe-B sintered magnet is estimated from temperature rise rate of their magnets. The obtained values of the eddy current loss coincide with the simulated data of the Integral Element Method. The method of dividing magnet is found effective in the suppression of the current loss. Also, it is observed that the higher harmonic effects on the alternating current are simple addition of each harmonics.
Keywords :
boron alloys; eddy current losses; ferromagnetic materials; harmonics; iron alloys; neodymium alloys; permanent magnets; sintering; Integral Element Method; NdFeB; alternating current; dividing magnet; eddy current loss; higher harmonic effects; sintered magnet; temperature rise rate; Chemicals; Coils; Eddy currents; Frequency; Hysteresis motors; Loss measurement; Magnetic losses; Magnets; Shape; Temperature;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1463597
