Current limiter arrangement and method for manufacturing a current limiter arrangement

Patent metadata

Field	Value
Publication number	US-2017237252-A1
Application number	US-201415502657-A
Country	US
Kind code	A1
Filing date	Aug 8, 2014
Priority date	Aug 8, 2014
Publication date	Aug 17, 2017
Grant date	—

Abstract

A current limiter arrangement limiting an electric current between a first and a second terminal includes a first current limiting device and a second current limiting device arranged between the first and the second terminal. The first and the second current limiting device each include a substrate having a substrate surface area and a substrate thickness, and include a superconducting section arranged on the substrate and thermally coupled to the substrate thereby covering a coupling surface area on the substrate. Each of the superconducting sections has a critical current value and the substrate surface areas, the substrate thicknesses and or the coupling surface areas are implemented as a function of the critical current values.

First claim

1 - 17 . (canceled)

18 . A current limiter arrangement for limiting an electric current between a first and a second terminal comprising:
a first current limiting device and a second current limiting device arranged between the first and the second terminal; the first and the second current limiting device each include a substrate having a substrate surface area and a substrate thickness, and include a superconducting section arranged on the substrate and thermally coupled to the substrate thereby covering a coupling surface area on the substrate; wherein each of the superconducting sections has a critical current value, and the substrate surface areas, the substrate thicknesses, and or the coupling surface areas are implemented as a function of the critical current values.

19 . The current limiter arrangement of claim 18 , wherein the substrate surface areas, the substrate thicknesses, and/or the coupling surface areas are implemented such that the recovery times of the first and the second current limiting device are within a predetermined range.

20 . The current limiter arrangement of claim 18 , wherein in at least one of the first or second current limiting device the substrate surface area is larger than the coupling surface area.

21 . The current limiter arrangement of claim 18 , wherein in at least one of the first or second current limiting device the substrate comprises at least two substrate sections that are at least section-wise separated from one another by a gap, and wherein the superconducting section and/or a third substrate section partially bridges the gap.

22 . The current limiter arrangement of claim 18 , wherein in at least one of the first or second current limiting device the substrate has a width that is larger than a width of coupling surface area.

23 . The current limiter arrangement of claim 18 , wherein the superconducting sections have essentially a same width.

24 . The current limiter arrangement of claim 18 , wherein in at least one of the first or second current limiting device the substrate thickness varies between the first and the second terminal.

25 . The current limiter arrangement of claim 18 , further comprising current limiting devices arranged between the first and the second terminal,
wherein each current limiting device includes a substrate having a substrate surface area and a substrate thickness, and a superconducting section arranged on the substrate and thermally coupled to the substrate thereby covering a coupling surface area on the substrate, wherein each of the superconducting sections has a critical current value, and the substrate surface areas, the substrate thicknesses, and/or the coupling surface areas are implemented as a function of the critical current values.

26 . The current limiter arrangement of claim 18 , further comprising a housing for a coolant liquid, wherein the coolant fluid pass around the current limiting devices.

27 . The current limiter arrangement of claim 18 , wherein in at least one of the current limiting devices the substrate and the superconducting section is a layered structure.

28 . The current limiter arrangement of claim 18 , wherein in at least one of the current limiting devices the superconducting section comprises a buffer layer, a superconducting layer, and/or a protective layer.

29 . The current limiter arrangement of claim 18 , wherein the substrate comprises an electrically isolating material to dissipate heat from the superconducting section into a cooling liquid.

30 . A method for manufacturing a current limiter arrangement, comprising:
arranging a plurality of current limiting devices between a first and a second terminal, wherein the current limiting devices each include a substrate having a substrate surface area and a substrate thickness, and a superconducting section arranged on the substrate and thermally coupled to the substrate thereby covering a coupling surface area on the substrate; electrically coupling the superconducting sections between the first and the second terminal, wherein each of the superconducting sections has a critical current value; adapting the substrate surface areas, the substrate thicknesses, and/or the coupling surface areas as a function of the critical current values.

31 . The method of claim 30 , further comprising:
compensating a difference in recovery times of the current limiting devices by varying the substrate surface areas, the substrate thicknesses, and/or the coupling surface areas when the current limiter arrangement is operated with predetermined operational parameters.

32 . The method of claim 30 , wherein the current limiter arrangement is the current limiter arrangement including:
a first current limiting device and a second current limiting device arranged between the first and the second terminal; the first and the second current limiting device each include a substrate having a substrate surface area and a substrate thickness, and include a superconducting section arranged on the substrate and thermally coupled to the substrate thereby covering a coupling surface area on the substrate; wherein each of the superconducting sections has a critical current value, and the substrate surface areas, the substrate thicknesses, and/or the coupling surface areas are implemented as a function of the critical current values.

33 . A current limiting device for limiting an electric current between a first and a second terminal comprising:
a substrate having a substrate surface area and a substrate thickness; a superconducting section arranged on the substrate and thermally coupled to the substrate thereby covering a coupling surface area on the substrate; wherein the substrate longitudinally extends between the first and the second terminal, and wherein a width of the substrate extends beyond the coupling surface area and varies at least piecewise between the first and the second terminal.

34 . The current limiting device of claim 33 , wherein the substrate comprises at least two substrate sections that are at least section-wise separated from one another by a gap, and wherein the superconducting section and/or a third substrate section partially bridges the gap.

Assignees

• Furukawa Electric Co Ltd

Inventors

• Mihálffy Tamás
• Yokoyama Shinji
• Matsui Masakazu
• Varga Gábor
• Hernádi Zoltán
• Kasahara Hajime

Classifications

• H02H9/023 Primary

  Current limitation using superconducting elements · CPC title

• H01L39/16

  Electricity · mapped topic

• H01L39/24

  Electricity · mapped topic

• H10N60/30 Primary

  Devices switchable between superconducting and normal states · CPC title

• H10N60/01

  Manufacture or treatment · CPC title