公开(公告)号：US20230027862A1

公开(公告)日：2023-01-26

申请号：US17381649

申请日：2021-07-21

Applicant: ABB Schweiz AG

Inventor： William E. Martin ,  Robert F. McElveen, JR. ,  Nicolas W. Frank

IPC: H02K1/27

Abstract: An electric machine includes a stator defining a rotor chamber. A rotor is disposed within the chamber and is configured to rotate about a central axis. The rotor includes a plurality of stacked laminations to form a rotor core. The rotor core has an outer diameter and each of the laminations includes a plurality of magnet slots that are radially spaced apart from the outer diameter and angled inwardly with one end of each magnet slot adjacent to the outer diameter. Each magnet slot has a permanent magnet disposed therein, adjacent pairs of the ferrite permanent magnets defining poles for the rotor. Each magnet slot has two opposite ends that define inner and outer magnet free areas. The outer magnet free areas are adjacent the rotor outer diameter and the inner magnet free areas are radially inwardly positioned. Each outer magnet free area is provided with conductive material.

公开(公告)号：US12040660B2

公开(公告)日：2024-07-16

申请号：US17400970

申请日：2021-08-12

Applicant: ABB Schweiz AG

Inventor： William E. Martin ,  Robert McElveen ,  Nicolas Frank

IPC: H02K1/276 ,  H02K3/48 ,  H02K15/03 ,  H02K21/12

CPC classification number: H02K1/276 ,  H02K3/48 ,  H02K15/03 ,  H02K21/12

Abstract: The disclosed embodiments describe a partially caged rotor for use in an interior permanent magnet motor and techniques for fabricating thereof. In some embodiments, a caged rotor includes: a rotor core having a shaft; a rotor cage comprising a plurality of conductor bars; and a plurality of permanent magnets at least partially disposed inside a plurality of mounting holes of the core, the plurality of permanent magnets and the plurality of mounting holes forming a plurality of cavities inside the core; wherein each conductor bar is disposed at a respective cavity of the plurality of cavities such that the plurality of conductor bars is of a number greater or equal to 8 and less or equal to 64.

公开(公告)号：US11949287B2

公开(公告)日：2024-04-02

申请号：US17388811

申请日：2021-07-29

Applicant: ABB Schweiz AG

Inventor： William E. Martin ,  Stephen T. Evon ,  Jerry L. Martin ,  Barron D. Grant ,  John M. Zedek

IPC: H02K1/20 ,  H02K5/18 ,  H02K5/20 ,  H02K15/02 ,  H02K15/14

CPC classification number: H02K1/20 ,  H02K5/18 ,  H02K5/203 ,  H02K5/207 ,  H02K15/028 ,  H02K15/14

Abstract: This disclosure provides a consolidated electric motor stator lamination for multiple enclosure types such that a single stator assembly can be used for different classifications of an electric motor. Each layer of the stator lamination includes external features that, when combined with the external features of the other layers in the lamination, can be adapted to conform the electric motor to one of a plurality of enclosure types. The external features include retaining features for one or more covers, fins, and a profile configured to accept cooling tubes. In various embodiments, a single consolidated stator lamination assembly can be adapted to provide a motor having at least two of an open-drip proof (ODP), a totally enclosed fan cooled (TEFC), or a totally enclosed water cooled (TEWC) enclosure classification.

公开(公告)号：US20230034953A1

公开(公告)日：2023-02-02

申请号：US17388811

申请日：2021-07-29

Applicant: ABB Schweiz AG

Inventor： William E. Martin ,  Stephen T. Evon ,  Jerry L. Martin ,  Barron D. Grant ,  John M. Zedek

IPC: H02K1/20 ,  H02K5/18 ,  H02K5/20 ,  H02K15/02 ,  H02K15/14

Abstract: This disclosure provides a consolidated electric motor stator lamination for multiple enclosure types such that a single stator assembly can be used for different classifications of an electric motor. Each layer of the stator lamination includes external features that, when combined with the external features of the other layers in the lamination, can be adapted to conform the electric motor to one of a plurality of enclosure types. The external features include retaining features for one or more covers, fins, and a profile configured to accept cooling tubes. In various embodiments, a single consolidated stator lamination assembly can be adapted to provide a motor having at least two of an open-drip proof (ODP), a totally enclosed fan cooled (TEFC), or a totally enclosed water cooled (TEWC) enclosure classification.

公开(公告)号：US11418074B2

公开(公告)日：2022-08-16

申请号：US16035171

申请日：2018-07-13

Applicant: ABB Schweiz AG

Inventor： Ghanshyam Shrestha ,  Colin Tschida ,  William E. Martin ,  Paul Humphries

IPC: H02K1/28 ,  H02K1/27 ,  H02K1/276 ,  H02K15/03

Abstract: A rotor assembly includes a rotor member and a plurality of permanent magnets. The rotor member has a hub with a central axis and a plurality of spokes extending radially outward relative to the hub. Each spoke has a radially inward end and a radially outward end. Each spoke also has a body section, a mounting section, and a flux barrier section. The body section extends from the radially outward end towards the radially inward end. The mounting section is interconnected to the hub. The flux barrier section is disposed between the body section and the mounting section and has at least one flux restriction web extending between the body section and the mounting section. The flux restriction web magnetically isolates the body section from the mounting section. A permanent magnet is disposed within each magnet-receiving slot between pairs of adjacent spokes. A motor with the rotor assembly is also disclosed.