公开(公告)号：US20230208255A1

公开(公告)日：2023-06-29

申请号：US17559894

申请日：2021-12-22

Applicant: ABB Schweiz AG

Inventor： Ghanshyam Shrestha ,  Wei Xing ,  Graham Medlin ,  Rajib Mikail

IPC: H02K9/197 ,  H02K1/20

CPC classification number: H02K9/197 ,  H02K1/20

Abstract: The present disclosure relates to electrical machines, such as liquid-cooled motors. The liquid-cooled motors can include a stator with cooling tube channels (e.g., corrugated channels) having tubes inserted and expanded. Lamination holes for each lamination in the lamination stack of the stator can have varying diameter along the axial direction to achieve a corrugated internal feature. The tubes for cooling liquid can be fitted in the lamination holes of the stator. In some embodiments, hydraulic expansion expands and plastically deforms the tubes to the contour of the corrugated internal feature of the corrugated channel. In some embodiments, the tube can also be inserted in the corrugated channel and a stator head plate, thereby helping create a compact stator by removing the need for tube connections to connect the corrugated channels.

公开(公告)号：US20200244114A1

公开(公告)日：2020-07-30

申请号：US16262544

申请日：2019-01-30

Applicant: ABB Schweiz AG

Inventor： Colin Tschida ,  Rajib Mikail ,  Elio Alberto Perigo

IPC: H02K1/18 ,  H02K15/03 ,  H01F1/03 ,  H01F1/057 ,  H02K29/08

Abstract: The rotor of a rotor assembly for an electric machine includes first magnetic structures utilized for torque production in the electric machine. Second magnetic structures including second magnetic poles not utilized for torque production in the electric machine are polymer-bonded to at least one of the rotor and the rotor shaft.

公开(公告)号：US20190068036A1

公开(公告)日：2019-02-28

申请号：US15683035

申请日：2017-08-22

Applicant: ABB Schweiz AG

Inventor： Lorenzo Mazza ,  Rajib Mikail

IPC: H02K19/10 ,  H02K1/16 ,  H02K1/26 ,  H02K1/24 ,  H02K1/14 ,  H02K3/18

CPC classification number: H02K19/10 ,  H02K1/146 ,  H02K1/16 ,  H02K1/165 ,  H02K1/246 ,  H02K1/26 ,  H02K1/2766 ,  H02K3/18 ,  H02K19/103

Abstract: An electrical motor is provided to reduce torque ripple. Torque ripple is a variation in torque output as the rotor rotates. The motor has a stator and a rotor. The stator slots are used for windings. The rotor slots define a plurality of poles. The number of slots in the stator are equal to the number of slots in the rotor.

公开(公告)号：US20180277993A1

公开(公告)日：2018-09-27

申请号：US15762107

申请日：2015-09-24

Applicant: ABB Schweiz AG

Inventor： Zhiguo Pan ,  Yu Du ,  Emanuele Borla ,  Rajib Mikail ,  Hongrae Kim

IPC: H01R13/635 ,  H01R13/14

CPC classification number: H01R13/635 ,  H01R13/14 ,  H01R13/502 ,  H01R13/6633 ,  H01R24/28 ,  H01R24/76 ,  H01R24/78 ,  H01R2103/00

Abstract: A sliding contact assembly for a DC electrical outlet receives plug contacts of an electrical plug. The assembly includes sliding contact structure having a base and a plurality of electrical sliding contacts fixed to the base. A housing includes a first end wall having an internal top surface and second end wall opposing the first end wall. The second end wall has an internal bottom surface. The housing has a side wall structure defining an internal chamber between the top surface and the bottom surface. The sliding contact structure is disposed in the housing to be movable linearly within the chamber. A spring is disposed between the top surface of the housing and a surface of the base so that when the plug contacts are completely disconnected from the associated sliding contacts, the spring rapidly forces the sliding contacts away from the plug contacts, reducing arcing energy there-between.

公开(公告)号：US09666977B2

公开(公告)日：2017-05-30

申请号：US14812648

申请日：2015-07-29

Applicant: ABB Schweiz AG

Inventor： Yu Du ,  Emanuele Borla ,  Rajib Mikail ,  Hongrae Kim ,  Patrick Schneider

IPC: H01R13/53 ,  H01F27/00 ,  H01R13/66

CPC classification number: H01R13/53 ,  H01F27/00 ,  H01R13/6633

Abstract: Technologies for providing DC arc protection in a DC socket include an electromagnet positioned in the DC socket configured to produce a magnetic field. The electromagnet is positioned to be adjacent to a contact region between one or more supply terminals of a DC socket and one or more prongs of a DC plug. As the DC plug is disconnected from the DC socket, a DC arc might form between one or more of the supply terminals and one or more of the prongs. The magnetic field produced by the electromagnet reduces the energy of the DC arc and reduces the time duration of the DC arc.