公开(公告)号：EP3567621A1

公开(公告)日：2019-11-13

申请号：EP19167882.0

申请日：2019-04-08

Applicant: ABB Schweiz AG

Inventor： Garcia-Ferre, Francisco ,  Schmoelzer, Thomas ,  Jacimovic, Jacim ,  Herrmann, Lorenz ,  Korbel, Jakub ,  Erford, Tobias ,  Saxl, David

IPC: H01H1/36 ,  H01H3/22 ,  H01H9/40 ,  H01H33/14 ,  H01H33/28 ,  H01H33/38

Abstract: An electrical switch assembly (10) comprises a contact element (14, 18) to be moved towards a further contact element (14, 18) for generating an electrical connection; and a drive (16) for moving the contact element (14, 18); wherein the drive (16) comprises a plunger (26) with a connection member (30) interconnected with the contact element (14); wherein the plunger (26) comprises a mechanical structure (34) with a top side (36) to which the connection member (30) is connected, and a bottom side (38) opposite to the top side (36); wherein the drive (16) comprises a Thomson coil (52) for moving the plunger (26) via an electrically conducting top face (48), which is provided on the top side (36) and an electrically conducting bottom face (50), which is provided on the bottom side (38). The mechanical structure (34) comprises at least one channel between the top side (36) and the bottom side (38), the at least one channel extending transverse to a movement direction (D) of the plunger (26). Furthermore, the mechanical structure (34) fills less than 50% of a volume between the top side (36) and the bottom side (38).

公开(公告)号：EP3703086A1

公开(公告)日：2020-09-02

申请号：EP19160069.1

申请日：2019-02-28

Applicant: ABB Schweiz AG

Inventor： Jacimovic, Jacim ,  Christen, Thomas ,  Scherf, Lavinia ,  Kessler, Reto ,  Herrmann, Lorenz ,  Denervaud, Eric

IPC: H01F41/02 ,  B22F3/105

Abstract: Embodiments of permanent magnets and to methods of producing permanent magnets are provided herein. Further, embodiments of electrical machines comprising permanent magnets are provided herein. The method of producing a permanent magnet 200 comprising forming a magnetisable workpiece 100 by additive manufacturing (step A)) and forming the permanent magnet 200 by partitioning the magnetisable workpiece 100, wherein an exposed surface 150 of the permanent magnet 200 formed by the partitioning is non-parallel to the first workpiece layer.

公开(公告)号：EP3570299A1

公开(公告)日：2019-11-20

申请号：EP18173212.4

申请日：2018-05-18

Applicant: ABB Schweiz AG

Inventor： Donzel, Lise ,  Hemrle, Jaroslav ,  Strassel, Thorsten ,  Herrmann, Lorenz ,  Kaufmann, Lilian

IPC: H01C1/082 ,  H01C7/12 ,  F28D15/04 ,  H05K7/20 ,  H01T1/14 ,  H01T4/04

Abstract: An energy absorption device (1) for a circuit breaker, in particular a solid-state or a hybrid circuit breaker, includes an energy absorber (20) arranged within an enclosure (10) and a two-phase cooling arrangement. The two-phase cooling arrangement has one or more fluid distribution units (110) configured to direct a cooling fluid in a liquid state toward the energy absorber (20), the energy absorber (20) being cooled due to evaporation of the cooling fluid.
A circuit breaker, in particular solid-state or hybrid circuit breaker, includes one or more energy absorption devices (2, 3, 4).
A method for two-phase cooling of an energy absorber (20) of a circuit breaker, in particular a solid-state or hybrid circuit breaker, includes: after a switching operation of the circuit breaker, directing a cooling fluid in a liquid state toward the energy absorber (20). Thereby, the energy absorber (20) is cooled due to evaporation of the cooling fluid.