公开(公告)号：US20150061427A1

公开(公告)日：2015-03-05

申请号：US14525291

申请日：2014-10-28

Applicant: ABB TECHNOLOGY AG

Inventor： Ari VARTIAINEN ,  Pekka Kanninen ,  Petri Mäki-Ontto

IPC: H02K1/30 ,  H02K1/32 ,  H02K9/02 ,  H02K1/27

CPC classification number: H02K1/30 ,  H02K1/2773 ,  H02K1/28 ,  H02K1/32 ,  H02K1/325 ,  H02K9/02

Abstract: An electric machine can include a stator, a rotor frame and a pole arrangement with: plural segment pieces disposed circumferentially around, and fastened to, the rotor frame; permanent magnet pieces positioned on inclined side edges of each segment piece; and plural pole pieces disposed circumferentially around the rotor frame and disposed alternatingly with the segment pieces. The magnet pieces are pressed between inclined side edges of the pole pieces and the inclined side edges of the segment pieces. The segment pieces, the permanent magnet pieces and the pole pieces form a closed ring around the outer surface of the rotor frame, with plural such rings being arranged after each other in an axial direction. An axial air channel can pass through the rings, and at least one radial air duct (R1, R2) between the rings.

Abstract translation: 电动机可以包括定子，转子框架和磁极装置，其具有：周向地设置并紧固在转子架上的多个分段件; 永磁体片位于每个片段的倾斜侧边缘上; 以及设置在转子架周围的多个极片，并且与片段交替地设置。 磁片被压在极片的倾斜侧边缘和片段的倾斜侧边缘之间。 片段，永磁体片和极片在转子架的外表面周围形成闭环，多个这样的环沿轴向彼此排列。 轴向空气通道可以穿过环，以及环之间的至少一个径向空气管道（R1，R2）。