公开(公告)号：US10389190B2

公开(公告)日：2019-08-20

申请号：US15128839

申请日：2015-03-24

Applicant: ABB Schweiz AG

Inventor： Joonas Helander ,  Moritz Grün ,  Ari Vartiainen

IPC: H02K1/18 ,  H02K5/02 ,  H02K5/04 ,  H02K5/26

Abstract: The electric machine comprises a rotor, a stator surrounding the rotor and a support structure. The stator has a longitudinal center axis and is supported on the support structure with support elements. The stator comprises a cylindrical stator core having a laminated structure and slots for a stator winding and a stator frame surrounding the stator core. The stator frame comprises two opposite end constructions and at least one frame plate located between the end constructions. A support element is located between each end construction and the adjacent frame plate and between adjacent frame plates. The support element is made of cast iron and attached to the end constructions, the frame plate and the support structure with fastening means based on a compression joint, whereby the stator frame becomes attached to the support structure via the support elements.

公开(公告)号：US10547220B2

公开(公告)日：2020-01-28

申请号：US15559128

申请日：2016-03-11

Applicant: ABB Schweiz AG

Inventor： Joonas Helander ,  Moritz Grün ,  Ilkka Vainio

IPC: H02K1/18 ,  F02B63/04 ,  H02K7/18 ,  H02K5/16 ,  H02K7/08 ,  F02B3/06

Abstract: The electric machine comprises a rotor, a stator and a support structure. The stator comprises a stator core and a stator frame. The stator frame has axial (X-X) ends and longitudinal sides. The rotor is supported with bearings on the support structure. An end support structure of cast iron is provided at each end of the stator frame. The end support structure is formed of a longitudinal middle portion and two upwards directed end portions. The end support structure extends in a traverse direction between outer edges of the axial (X-X) end of the stator frame. The end support structure is attached with compression joints to the support structure and to the axial (X-X) end of the stator frame.

公开(公告)号：US10110087B2

公开(公告)日：2018-10-23

申请号：US15128979

申请日：2015-03-24

Applicant: ABB Schweiz AG

Inventor： Joonas Helander ,  Moritz Grün ,  Ari Vartiainen ,  Risto Pulkkinen

IPC: H02K5/24 ,  H02K5/04 ,  H02K1/18 ,  H02K5/26

Abstract: Electric machine comprises a rotor and a stator surrounding the rotor. The stator comprises a cylindrical stator core having a laminated structure and slots for a stator winding and a stator frame surrounding the stator core. The stator core is attached with fastening brackets by means of fastening means based on a compression joint to the stator frame. The stator frame comprises two opposite end constructions and a frame plate located between the end constructions. Back beams extending in the axial direction of the stator are attached to an outer surface of the stator core. Each fastening bracket comprises two perpendicular branches, a first branch attached to the stator frame plate and a second branch attached to the back beam by fastening means based on a compression joint. The fastening means passes through openings in each branch. The openings are allow a small movement of the fastening means in the openings so that the stator core can be centralized in a radial direction and in an axial direction in relation to the stator frame before the fastening means are tightened in order to lock the stator core to the stator frame.