公开(公告)号：US20220140668A1

公开(公告)日：2022-05-05

申请号：US17088698

申请日：2020-11-04

Applicant: ABB Schweiz AG

Inventor： Colin Tschida ,  Graham L. Medlin ,  Md Ashfanoor Kabir

IPC: H02K1/18 ,  H02K1/16 ,  H02K1/26 ,  H02K1/28 ,  H02K15/02

Abstract: An electric machine includes a core comprising a plurality of core segments extending in a longitudinal direction and a plurality of slots being equally spaced peripherally around the core and formed between cutouts in adjacent segments. A plurality of windings is disposed on the core and includes straight portions disposed in the plurality of slots and turn portions extending past at least one axial end of the core along the longitudinal direction. The core and windings are assembled together in an unrolled condition, where the mat is placed in an unrolled core, and then rolled together to form a stator or rotor.

公开(公告)号：US20230129960A1

公开(公告)日：2023-04-27

申请号：US17509967

申请日：2021-10-25

Applicant: ABB Schweiz AG

Inventor： Elio Alberto Perigo ,  Darren D. Tremelling ,  Graham L. Medlin ,  Stefan Rakuff

IPC: H02K1/24 ,  H02K1/02 ,  H02K19/10 ,  H02K15/02

Abstract: A rotor of a synchronous reluctance motor may include: a plurality of laminations forming a stack, each lamination including: two parallel surfaces and a perimeter that define the lamination and a direction of stacking the laminations that is perpendicular to the parallel surfaces, the lamination at least partially filled with a magnetically soft electrical conductor and at least one cavity encircled by the conductor and extending from a first to a second surface of the two parallel surfaces, the conductor forming at least one bridge at the perimeter of the lamination from one side of the at least one cavity to another side of the at least one cavity. A value of a magnetic property and a value of a mechanical property of the at least one bridge differs from a value of the magnetic property and a value of the mechanical property of the conductor material.