公开(公告)号：US6044737A

公开(公告)日：2000-04-04

申请号：US998598

申请日：1997-12-29

申请人： Yeong-Der Yao ,  Jain-Chang Wang ,  Chin-Po Liao ,  Der-Ray Huang ,  Chi-Mou Chao

发明人： Yeong-Der Yao ,  Jain-Chang Wang ,  Chin-Po Liao ,  Der-Ray Huang ,  Chi-Mou Chao

IPC分类号： H02K1/14 ,  H02K21/22 ,  H02K29/03 ,  B26D1/00

CPC分类号： H02K1/146 ,  H02K29/03 ,  Y10T29/49009 ,  Y10T83/04 ,  Y10T83/0505 ,  Y10T83/051

摘要： A new type of stator design and arc shaping method that is used in a diametrically wound and diametrical air gap type of brushless motor. After arc shaping, the stator of this brushless motor has an external profile composed of a central arc and two modified arcs located on each side of the central arc. The central arc subtends an angle twice that of angle A and the modified arcs each has a radius r, both angle A and r are given by the following formulae: ##EQU1## Through arc shaping the stator, the cogging torque is lowered while a certain standard value for the torque constant is still maintained. Thus, the overall efficiency of the brushless motor is raised.

摘要翻译： 一种新型的定子设计和电弧成型方法，用于直径和径向气隙式无刷电机。 在电弧成形之后，该无刷电动机的定子具有由位于中心弧的每一侧上的中心弧和两个改变的弧构成的外部轮廓。 中心弧对角为角度A的两倍，修正的弧各自具有半径r，角A和r由以下公式给出：通过定子的圆弧成形，齿槽转矩降低，而一定的标准值 转矩常数仍然保持不变。 因此，提高了无刷电动机的整体效率。