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公开(公告)号：US12126219B2
公开(公告)日：2024-10-22
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
CPC classification number: H02K1/276
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.
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公开(公告)号：US20240339888A1
公开(公告)日：2024-10-10
申请号：US18297878
申请日：2023-04-10
Applicant: ABB Schweiz AG
Inventor： William E. Martin , John M. Zedek
Abstract: A cooling frame for cooling an electric motor is provided. The cooling frame includes a header and a plurality of fluid conduits configured to carry a fluid and facilitate an exchange of heat between the fluid and the electric motor. The header includes at least one header port for exchanging fluid into or out from the header; a first plate comprising a central opening; and a plurality of conduit ports on the first plate positioned around the central opening, wherein each conduit port is fluidly connectable to a respective fluid conduit of the plurality of fluid conduits. The header also includes a first channel fluidly connecting the at least one header port and a first conduit port of the plurality of conduit ports, and a second channel fluidly connecting a second conduit port and the at least one header port.
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公开(公告)号：US20230060549A1
公开(公告)日：2023-03-02
申请号：US17461429
申请日：2021-08-30
Applicant: ABB Schweiz AG
Inventor： Robert F. McElveen , William E. Martin
Abstract: The disclosed embodiments describe a tapped winding stator for use in an electric motor. In some embodiments, the electric motor includes a stator body. In some embodiments, a plurality of teeth that are adjacent in a circumferential direction. In some embodiments, a plurality of slots are formed between the plurality of teeth. In some embodiments, a plurality of coils are mounted in each of the plurality of slots. In some embodiments, the plurality of coils are tapped in a configuration that allows the stator to selectively bypass one or more of the plurality of coils in operation. A plurality of switches are electrically coupled between the configuration and a respective phase supply to the electric motor, each of the switches having at least a first position and a second position.
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公开(公告)号：US20230018320A1
公开(公告)日：2023-01-19
申请号：US17378932
申请日：2021-07-19
Applicant: ABB Schweiz AG
Inventor： William E. Martin , Robert F. McElveen, JR. , Nicolas W. Frank
Abstract: An electric machine includes a stator and a rotor. The rotor includes stacked laminations forming a rotor core. The rotor rotates relative to the stator about a central axis. The rotor core has an outer diameter. Each lamination includes a plurality of magnet slots. Each magnet slot includes a ferrite permanent magnet located therein, adjacent pairs of the ferrite permanent magnets defining a number of poles. Each of the laminations includes a plurality of non-circular rotor bar apertures spaced about the central axis of the rotor and disposed adjacent to and radially inward of the rotor outer diameter. A non-cylindrical rotor bar is disposed in each respective of the plurality of rotor bar apertures. The rotor bars are formed of a conductive material, wherein at least some of the plurality of rotor bars collectively form a rotor bar cage.
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公开(公告)号：US11742734B2
公开(公告)日：2023-08-29
申请号：US17378932
申请日：2021-07-19
Applicant: ABB Schweiz AG
Inventor： William E. Martin , Robert F. McElveen, Jr. , Nicolas W. Frank
CPC classification number: H02K21/16 , H02K1/27 , H02K21/04 , H02K17/16 , H02K17/165 , H02K21/46 , H02K1/276
Abstract: An electric machine includes a stator and a rotor. The rotor includes stacked laminations forming a rotor core. The rotor rotates relative to the stator about a central axis. The rotor core has an outer diameter. Each lamination includes a plurality of magnet slots. Each magnet slot includes a ferrite permanent magnet located therein, adjacent pairs of the ferrite permanent magnets defining a number of poles. Each of the laminations includes a plurality of non-circular rotor bar apertures spaced about the central axis of the rotor and disposed adjacent to and radially inward of the rotor outer diameter. A non-cylindrical rotor bar is disposed in each respective of the plurality of rotor bar apertures. The rotor bars are formed of a conductive material, wherein at least some of the plurality of rotor bars collectively form a rotor bar cage.
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Patent Agency Ranking
公开(公告)号：US20230050994A1
公开(公告)日：2023-02-16
申请号：US17400970
申请日：2021-08-12
Applicant: ABB Schweiz AG
Inventor： William E. Martin , Robert McElveen , Nicolas Frank
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.
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7.发明公开公开(公告)号：US20240339875A1
公开(公告)日：2024-10-10
申请号：US18297855
申请日：2023-04-10
Applicant: ABB Schweiz AG
Inventor： William E. Martin , John M. Zedek , Stephen T. Evon
Abstract: A lamination for a stator of an electric motor includes: a material sheet having a generally circular shape with a center and a radial direction, an outer contour, and an inner contour, the outer and inner contours being generally concentric with the center. The inner contour is defined by an arrangement of a plurality of teeth and a plurality of stator slots, each tooth of the plurality of teeth having one stator slot of the plurality of stator slots to a first side of the tooth and one stator slot of the plurality of stator slots to a second side of the tooth, the inner contour defining a rotor hole for receiving a rotor of the electric motor. The material sheet has a plurality of internal cooling holes arranged around the rotor hole.
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公开(公告)号：US20200021154A1
公开(公告)日：2020-01-16
申请号：US16035171
申请日：2018-07-13
Applicant: ABB Schweiz AG
Inventor： Ghanshyam Shrestha , Colin Tschida , William E. Martin , Paul Humphries
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.
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公开(公告)号：US12170459B2
公开(公告)日：2024-12-17
申请号：US17461429
申请日：2021-08-30
Applicant: ABB Schweiz AG
Inventor： Robert F. McElveen , William E. Martin
Abstract: The disclosed embodiments describe a tapped winding stator for use in an electric motor. In some embodiments, the electric motor includes a stator body. In some embodiments, a plurality of teeth that are adjacent in a circumferential direction. In some embodiments, a plurality of slots are formed between the plurality of teeth. In some embodiments, a plurality of coils are mounted in each of the plurality of slots. In some embodiments, the plurality of coils are tapped in a configuration that allows the stator to selectively bypass one or more of the plurality of coils in operation. A plurality of switches are electrically coupled between the configuration and a respective phase supply to the electric motor, each of the switches having at least a first position and a second position.
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公开(公告)号：US20240313607A1
公开(公告)日：2024-09-19
申请号：US18185965
申请日：2023-03-17
Applicant: ABB Schweiz AG
Inventor： William E. Martin , John M. Zedek
IPC: H02K5/04
CPC classification number: H02K5/04
Abstract: An electric machine includes: a stator with an outer and an inner surface; a rotor disposed inside the inner surface of the stator and configured to rotate about an axis of rotation; a shaft oriented along and configured to rotate about the axis of rotation of the rotor and operably connected to the rotor; a frame integrated with the stator such that an outer surface of the frame is identical to the outer surface of the stator or a frame disposed outside the stator; and at least one fastenerless cover fixed to the outer surface of the frame without the use of fasteners.
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