Multiple parallel conductor for electrical machines and devices

• US 6,563,413 B1
• Filed: 08/11/2000
• Issued: 05/13/2003
• Est. Priority Date: 02/24/1998
• Status: Expired due to Term

• Current Assignee: ASTA Elektrodraht GmbH (Michael Tojner, PhD, LLD)
• Original Assignee: ASTA Elektrodraht GmbH (Michael Tojner, PhD, LLD)
• Inventors: Schnaubelt, Gernot, Ponweiser, Johann
• Primary Examiner(s): Donovan, Lincoln
• Assistant Examiner(s): Nguyen, Tuyen T.
• Application Number:
  US09/600,877
• Time in Patent Office: 1,005 Days
• Field of Search: 336/61, 336/180, 336/186, 174/120.R
• US Class Current: 336/186
• CPC Class Codes: H01F 27/323 Insulation between winding turns, between winding layers

Abstract

Multiple parallel conductor for an electrical machine and process. The conductor includes a plurality of adjacent subconductors combined to form a subconductor bundle having an outer surface with a plurality of contiguous surface sections arranged in a longitudinal direction, and a flat protective insulation covering at least one of the plurality of surface sections. At least one of the plurality of surface sections remains uncovered by the flat protective insulation covering. A mesh sheathing further covers the plurality of surface sections.

Claims

1. A multiple parallel conductor for an electrical machine comprising:

a plurality of adjacent subconductors arranged in plural adjacent layers to form a subconductor bundle, said bundle having an outer peripheral surface including a plurality of contiguous surface sections;

a flat protective insulation extending over a portion of the outer peripheral surface of said bundle and covering at least one of the plurality of contiguous surface sections, wherein at least one of the plurality of contiguous surface sections remains uncovered by the flat protective insulation; and

a mesh sheathing covering the plurality of contiguous surface sections and the flat protective insulation,

wherein the mesh sheathing facilitates adequate cooling of the adjacent subconductors.

2. The multiple parallel conductor according to claim 1, wherein the multiple parallel conductor is adapted for use in a transformer.

3. The multiple parallel conductor according to claim 1, wherein each of the plurality of subconductors is covered with a separate insulation covering.

4. The multiple parallel conductor according to claim 1, wherein each of the plurality of contiguous surface sections includes a planar portion.

5. The multiple parallel conductor according to claim 1, wherein the mesh sheathing comprises one of meshed ribbon or filament braiding.

6. The multiple parallel conductor according to claim 1, wherein the flat protective insulation covers plural adjacent surface sections of the plurality of contiguous surface sections.

7. The multiple parallel conductor according to claim 1, wherein the flat protective insulation comprises an insulation material impregnated with oil.

8. The multiple parallel conductor according to claim 7, wherein the insulation material comprises paper insulation.

9. The multiple parallel conductor according to claim 1, wherein each of the plurality of subconductors is covered with enamel insulation.

10. A winding for an electrical machine comprising:

a plurality of multiple parallel conductors, each of the multiple parallel conductors including a plurality of adjacent subconductors arranged in plural adjacent layers to form a subconductor bundle, said bundle having an outer peripheral surface including a plurality of contiguous surface sections;

a flat protective insulation extending over a portion of the outer peripheral surface of said bundle and covering at least one of the plurality of contiguous surface sections, wherein at least one of the plurality of contiguous surface sections remains uncovered by the flat protective insulation; and

a mesh sheathing covering the plurality of contiguous surface sections and the flat protective insulation;

wherein said plurality of multiple parallel conductors are arranged adjacent to one another, such that at least one side face of a multiple parallel conductor which faces an adjacent multiple parallel conductor is covered with the flat protective insulation, and

wherein the mesh sheathing facilitates adequate cooling of the multiple parallel conductors.

11. The winding according to claim 10, wherein each side face of adjacent multiple parallel conductors which face one another are covered with the flat protective insulation.

12. Windings for a transformer which includes a higher voltage winding and a lower voltage winding, said windings each comprising:

a plurality of multiple parallel conductors, each of the multiple parallel conductors including a plurality of adjacent subconductors arranged in plural adjacent layers to form a subconductor bundle, said bundle having an outer peripheral surface including a plurality of contiguous surface sections;

a flat protective insulation extending over a portion of the outer peripheral surface of said bundle and covering at least one of the plurality of contiguous surface sections, wherein at least one of the plurality of contiguous surface sections remains uncovered by the flat protective insulation; and

a mesh sheathing covering the plurality of contiguous surface sections and the flat protective insulation;

wherein said plurality of multiple parallel conductors are arranged adjacent to one another, such that surfaces of the multiple parallel conductors of the lower voltage winding which face the multiple parallel conductors of the higher voltage winding are covered with the flat protective insulation, and

wherein the mesh sheathing facilitates adequate cooling of the multiple parallel conductors.

13. A multiple parallel conductor for an electrical machine comprising:

at least two subconductor bundles positioned adjacent to one another, wherein each of said at least two subconductor bundles includes a plurality of adjacent insulated subconductors arranged in plural adjacent layers, a plurality of contiguous flat sides defining an outer perimeter of each bundle, and a mesh sheathing covering the outer perimeter of each bundle; and

a flat protective insulation sheet positioned outside of said outer perimeter of at least one of said bundles to insulate a flat side of the at least one of said bundles from an adjacent flat side of an adjacent bundle,

wherein the mesh sheathing facilitates adequate cooling of the adjacent insulated subconductors.

14. The multiple parallel conductor according to claim 13, wherein said plurality of subconductors have rectangular-shaped cross-sections.

15. The multiple parallel conductor according to claim 13, wherein said plurality of subconductors are positioned within said bundles adjacent to one another and stacked upon one another in layers to form a matrix.

16. A winding for an electrical machine comprising:

a plurality of multiple parallel conductors, each multiple parallel conductor including at least two subconductor bundles positioned adjacent to one another, wherein each of said at least two subconductor bundles includes a plurality of adjacent insulated subconductors arranged in plural adjacent layers, a plurality of contiguous flat sides defining an outer perimeter of each bundle, and a mesh sheathing covering the outer perimeter of each bundle; and

a flat protective insulation sheet positioned outside of said outer perimeter of at least one of said bundles to insulate a flat side of the at least one of said bundles from an adjacent flat side of an adjacent bundle;

wherein said plurality of multiple parallel conductors are positioned adjacent to one another and stacked upon one another to form an matrix, and

wherein the mesh sheathing facilitates adequate cooling of the multiple parallel conductors.

17. The winding for an electrical machine according to claim 16, wherein said flat protective insulation sheet is arranged to be positioned on said flat sides of said bundles which face adjacent multiple parallel conductors of the matrix.

18. A multiple parallel conductor for an electrical machine comprising:

at least two subconductor bundles positioned adjacent to one another, wherein each of said at least two subconductor bundles includes a plurality of adjacent insulated subconductors arranged in plural adjacent layers, a plurality of contiguous flat sides defining an outer perimeter of each bundle, and a mesh sheathing covering the outer perimeter of each bundle; and

a flat protective insulation sheet positioned outside of said outer perimeter of at least one of said bundles to insulate a flat side of the at least one of said bundles from an adjacent flat side of an adjacent bundle;

wherein said plurality of subconductors are positioned within said bundles in a matrix comprising plural rows and plural columns, each of the rows including at least two subconductors adjacent to one another, and each of the columns including at least two subconductors stacked upon one another;

the matrix further including a top row that includes at least one subconductor offset with respect to half a width of each subconductor, so that said at least one subconductor is positioned on top of an interface between the columns of the matrix,

wherein the mesh sheathing facilitates adequate cooling of the adjacent insulated subconductors.

19. A multiple parallel conductor for an electrical machine comprising:

a plurality of adjacent subconductors arranged to form a subconductor bundle, said bundle having an outer peripheral surface including a plurality of contiguous surface sections arranged in a longitudinal direction; and

a flat protective insulation covering at least one of the plurality of contiguous surface sections;

said multiple parallel conductor including plural side faces;

said flat protective insulation extending over at least one of (a) an entire side face of at least one of the plural side faces of the multiple parallel conductor and (b) over edge regions of adjacent side faces of the multiple parallel conductor, wherein at least one of the plurality of contiguous surface sections remains uncovered by the flat protective insulation; and

a mesh sheathing covering said bundle,

wherein the mesh sheathing facilitates adequate cooling of the adjacent subconductors.

20. The multiple parallel conductor according to claim 19, wherein the mesh sheathing covers the plurality of contiguous surface sections and the flat protective insulation.

21. The multiple parallel conductor according to claim 19, wherein the flat protective insulation extends over at least two of the plural side faces of the multiple parallel conductor.