Device for establishing a multi-phase electric connection and an arrangement comprising corresponding devices

Patent metadata

Field	Value
Publication number	US-10193284-B2
Application number	US-201815892720-A
Country	US
Kind code	B2
Filing date	Feb 9, 2018
Priority date	Aug 10, 2015
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

Abstract

An apparatus for establishing a multi-phase electrical connection including at least one connecting element per phase, wherein each connecting element comprises two busbars and a number (N) of substantially identical, flexible conductors arranged in parallel with one another in a plane, said conductors electrically conductively connecting the two busbars. Further, a spacing (a) of geometric center points of cross sections of adjacent conductors from one another is at least twice as large as an equivalent diameter (d, dequiv) of one of the conductors, and each busbar respectively comprises a connection region for electrical and mechanical connection of the connecting element to an electrical device. In addition, the connecting elements are arranged in parallel with one another and the geometric center points of the cross sections of adjacent conductors of adjacent connecting elements, which are assigned to different phases, have a spacing (b) from one another that is in each case at most half the product of the number (N) of electrical conductors minus 1 multiplied by the spacing (a) of the conductors of a phase from one another.

First claim

What is claimed is:

1. An apparatus for establishing a multi-phase electrical connection, comprising:
at least one connecting element per phase,
wherein each connecting element comprises two busbars and a number (N) of substantially identical, flexible conductors arranged in parallel with one another in a plane, said conductors electrically conductively connecting the two busbars,
wherein a spacing (a) of geometric center points of cross sections of adjacent conductors from one another is at least twice as large as an equivalent diameter (d, d equiv ) of one of the conductors,
wherein each busbar respectively comprises a connection region for electrical and mechanical connection of the connecting element to an electrical device and wherein the connecting elements are arranged in parallel with one another and the geometric center points of the cross sections of adjacent conductors of adjacent connecting elements, which are assigned to different phases, have a spacing (b) from one another that is in each case at most half the product of the number (N) of electrical conductors minus 1 multiplied by the spacing (a) of the conductors of a phase from one another.

2. The apparatus as claimed in claim 1 , wherein the diameter d of the conductors is smaller than or equal to a penetration depth δ that results on account of the skin effect.

3. The apparatus as claimed in claim 1 , wherein the conductors are secured to the busbars with cable lugs.

4. The apparatus as claimed in claim 1 , wherein the conductors are pressed or cold-welded individually to the busbars for the purpose of electrical contact-connection.

5. The apparatus as claimed in claim 1 , further comprising electrically isolating spacers arranged between the conductors of a connecting element.

6. The apparatus as claimed in claim 1 , further comprising electrically isolating spacers arranged between adjacent connecting elements.

7. The apparatus as claimed in claim 1 , wherein the conductors of the connecting elements are molded.

8. The apparatus as claimed in claim 1 , wherein each of the conductors are provided with an electrically isolating sheath comprising rubber, PVC or TPE.

9. An arrangement of electrical busbars of electrical devices, which are connected by an apparatus for establishing a multi-phase electrical connection, the apparatus comprising:
at least one connecting element per phase,
wherein each connecting element comprises two busbars and a number (N) of substantially identical, flexible conductors arranged in parallel with one another in a plane, said conductors electrically conductively connecting the two busbars,
wherein a spacing (a) of geometric center points of cross sections of adjacent conductors from one another is at least twice as large as an equivalent diameter (d, d equiv ) of one of the conductors,
wherein each busbar respectively comprises a connection region for electrical and mechanical connection of the connecting element to an electrical device and wherein the connecting elements are arranged in parallel with one another and the geometric center points of the cross sections of adjacent conductors of adjacent connecting elements, which are assigned to different phases, have a spacing (b) from one another that is in each case at most half the product of the number (N) of electrical conductors minus 1 multiplied by the spacing (a) of the conductors of a phase from one another,
wherein the connecting elements are connected to the busbars of the electrical devices such that no adjacent connecting elements are assigned to the same phase.

10. The arrangement as claimed in claim 9 , wherein the connecting elements are arranged such that a deviation from a target phase difference between the current through two adjacent connecting elements of 180° is minimized.

Assignees

• Sma Solar Technology Ag

Inventors

• Falk Andreas
• Umlauf Sebastian

Classifications

• H02B1/20

  Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards (installations of bus-bars H02G5/00) · CPC title

• H02G5/02

  Open installations · CPC title

• H02G5/002 Primary

  Joints between bus-bars for compensating thermal expansion · CPC title

• H01R25/162 Primary

  Electrical connections between or with rails or bus-bars (rails having primarily a non electrical function H01R4/64) · CPC title