公开(公告)号：US20220142015A1

公开(公告)日：2022-05-05

申请号：US17434546

申请日：2020-02-25

Applicant: AUDI AG ,  ABB POWER GRIDS SWITZERLAND AG

Inventor： Thomas GRADINGER ,  Jürgen SCHUDERER ,  Felix TRAUB ,  Chunlei LUI ,  Fabian MOHN ,  Daniele TORRESIN

IPC: H05K7/20 ,  H01L23/473

Abstract: An electric power converter device includes a first power semiconductor module and a frame for a closed cooler. The first power semiconductor module includes a first base plate having a first main side, a second main side opposite the first main side and a lateral side surface extending along a circumferential edge of the first base plate and connecting the first and the second main side. The frame is attached to the second main side of the first base plate. The first base plate has a first step on the second main side along the circumferential edge of the first base plate to form a first recess along the circumferential edge of the first base plate, in which first recess a first portion of the frame is received.

公开(公告)号：US20220005643A1

公开(公告)日：2022-01-06

申请号：US17289927

申请日：2019-10-30

Applicant: ABB POWER GRIDS SWITZERLAND AG

Inventor： Thomas GRADINGER ,  Uwe Drofenik

IPC: H01F27/28 ,  H01F27/34 ,  H01F41/066

Abstract: A transformer includes a first winding arranged around an axis, and a second winding arranged around the axis. The second winding includes a litz wire having an end portion located at an axial end position of the second winding and a middle portion located at an axial middle position of the second winding. The litz wire has a first cross section at the end portion and a second cross section at the middle portion, the cross sections each including in a quadrant between the axial outward direction and the direction pointing towards the first winding a curvature extending between the axial outward direction and the direction pointing towards the first winding. The curvature of the first cross section is smaller than the curvature of the second cross section thereby reducing the peak magnitude of the electrical field between the end portion of the second winding and the first winding.

公开(公告)号：US20220142016A1

公开(公告)日：2022-05-05

申请号：US17435489

申请日：2020-02-27

Applicant: AUDI AG ,  ABB POWER GRIDS SWITZERLAND AG

Inventor： Thomas GRADINGER ,  Andreas APELSMEIER ,  Benjamin SÖHNLE ,  Daniele TORRESIN

IPC: H05K7/20 ,  H01L23/473

Abstract: A power converter including a semiconductor module having a base plate and a cooling housing. The cooling housing includes a receptacle plate and a cover. The receptacle plate has an opening. The receptacle plate is connected to the base plate of the semiconductor module around the opening. The cover is connected to the receptacle plate along a closure path around the opening, and either the receptacle plate or the cover is formed as a stamped or deep-drawn plate.

公开(公告)号：US20210398741A1

公开(公告)日：2021-12-23

申请号：US17278914

申请日：2019-09-18

Applicant: ABB Power Grids Switzerland AG

Inventor： Uwe DROFENIK ,  Thomas GRADINGER ,  Bernhard WUNSCH

IPC: H01F27/32 ,  H01F27/06

Abstract: A transformer includes a transformer core having a first core leg having a first longitudinal axis and second core leg having a second longitudinal axis; a first low voltage (LV) winding arranged around the first core leg, a first high voltage (HV) winding arranged around the first LV winding; a second low voltage (LV) winding arranged around the second core leg; and a second high voltage winding arranged around the second LV winding, wherein the first HV winding is provided with a first HV connector and a second HV connector each extending substantially perpendicular away from the first longitudinal axis, and wherein the second HV winding is provided with a third HV connector and a fourth HV connector each extending substantially perpendicular away from the second longitudinal axis.