Design of Polar Anisotropic Sintered NdFeB Ring-Type Permanent-Magnet for Brushless DC Motor
A Four polar anisotropic sintered NdFeB PM with high surface flux density was developed using dry pressing process with pulse magnetizing fields. In this paper, effects of filling density, magnetic field intensity, distribution of the cavity, and of the way of pre-magnetized powder for the high performance polar anisotropic sintered NdFeB PMs were studied. It can be seen that magnets produced by pre-magnetized powder process shows magnetic surface fluxs maximum value that is 6,300 G due to pre-magnetized effects and that the back e.m.f. of Brushless motor, is 5.4 Vp/p per 1000 rpm, an increase about 35％ above the conventional segment magnet.
polar pre-magnetized anisotropic sintered magnet pulse field BLDC motor
Hyo Jun Kim Dong Hwan Kim Andrew S.Kim Sang Myun Kim Chang Seop Koh Gyu-Hong Kang
Jahwa Electronics Co.Ltd., Cheongju, Chungbuk 361-763, Korea School of ECE, Chungbuk National University, Korea Motor-Net International Co.Ltd., Puchon, Kyunggi, Korea
国际会议
北京
英文
411-414
2006-08-29（万方平台首次上网日期，不代表论文的发表时间）