公开(公告)号：EP2101395A2

公开(公告)日：2009-09-16

申请号：EP09002436.5

申请日：2009-02-20

申请人： Hitachi Ltd.

发明人： Kamiya, Akinori ,  Hino, Noriaki ,  Tajima, Fumio ,  Miyoshi, Tsutomu ,  Nihei, Hideki

IPC分类号： H02K1/27 ,  H02K21/14

CPC分类号： H02K1/2766 ,  B60L7/14 ,  B60L11/123 ,  B60L11/14 ,  B60L15/2009 ,  B60L2210/40 ,  B60L2240/12 ,  B60L2240/423 ,  B60L2260/28 ,  B60L2270/145 ,  H02K1/246 ,  H02K1/276 ,  H02K21/14 ,  H02K29/03 ,  Y02T10/6217 ,  Y02T10/641 ,  Y02T10/645 ,  Y02T10/7077 ,  Y02T10/7241 ,  Y02T10/7275

摘要： The present invention comprises a stator, and a rotor which is disposed oppositely to the stator with a gap interposed. The stator comprises a stator core, and a distributed stator winding mounted to the stator core. The stator core comprises a ring-like yoke core, and a plurality of teeth cores which protrude from the yoke core in the radial direction. The rotor comprises a rotor core, and a plurality of permanent magnets embedded in the rotor core. A pair of non-magnetic portions is created inside the rotor core and on both sides of the circumferential width of a permanent magnet for one magnetic pole. In the rotor core located on the stator side of the pair of non-magnetic portions, a pair of magnetic paths is created as the result of the creation of the pair of non-magnetic portions. Furthermore, a groove or hole is created on the outer circumferential portion of the rotor core and between the adjacent magnetic poles.

摘要翻译： 本发明包括定子和与定子相对设置的转子，间隔开。 定子包括定子芯和安装在定子芯上的分布式定子绕组。 定子铁心包括环形轭铁芯和从偏转铁芯沿径向突出的多个齿芯。 转子包括转子芯和嵌入转子芯中的多个永磁体。 在转子铁芯的内侧和用于一个磁极的永磁体的周向宽度的两侧上形成一对非磁性部分。 在位于一对非磁性部分的定子侧的转子芯中，由于一对非磁性部分的产生，产生一对磁路。 此外，在转子铁芯的外周部分和相邻的磁极之间产生槽或孔。