Magnetic pole for magnetic levitation vehicles

• US 20090021335A1
• Filed: 02/05/2005
• Published: 01/22/2009
• Est. Priority Date: 03/09/2004
• Status: Active Grant

• Current Assignee: thyssenkrupp Transrapid GmbH (Thyssenkrupp AG)
• Original Assignee: thyssenkrupp Transrapid GmbH (Thyssenkrupp AG)
• Inventors: Hahn, Wolfgang, Pfannkuch, Harald
• Granted Patent: US 7,724,120 B2
• Time in Patent Office: Days
• US Class Current: 335/297
• CPC Class Codes: B60L 13/04 Magnetic suspension or levitation for vehicles
• CPC Class Codes: B60L 2200/26 Rail vehicles

Abstract

A magnetic pole for magnetically levitation vehicles is described comprising a core and a winding applied on said core. According to the present invention, the winding has two spaced disks formed of conductor strip sections (21a, 21b) wound in opposite winding sense and in several layers around said core and conductively connected to each other at ends near said core by a connection section (21c) which defines the axial distance of said two disks (11, 12) and the winding sense of the two conductor strip sections (21a, 21b).

Claims

1. A magnetic pole for magnetic levitation vehicles comprising of a core (1) having a center axis (5) and a winding (10, 35, 36) applied on said core (1), characterized in that said winding (10, 35, 36) has two disks (11,12) spaced in the direction of the center axis (5), said disks being formed of conductor strip sections (21a, 21b, 29, 30) coiled in an opposite winding sense and in several layers around said core (1) and conductively connected to each other at ends near said core (1) by a central connection section (21c, 31) which defines the axial distance (a) of said two disks (11,12) and the winding sense of the two conductor strip sections (21a, 21b, 29, 30).

2. A magnetic pole according to claim 1, characterized in that said winding (10) is made of a continuous, one-piece conductor strip (21) basically having the same width (b) throughout, wherein the axial distance (a) of the two disks (11, 12) is defined by folding in the area of the connection section (21c).

3. A magnetic pole according to claim 2, characterized in that the conductor strip (21) is folded along two folding lines (22, 23) which are arranged in parallel to each other and obliquely to a longitudinal axis (24) of the conductor strip (21).

4. A magnetic pole according to claim 1, characterized in that said winding (35, 36) is made of a continuous conductor strip (28) in which the connection section (31) is configured as a planar formed part which has two connecting terminals (31a, 31b) that define the axial distance (a) of the two disks and are connected to one conductor strip section (29, 30) each.

5. A magnetic pole according to claim 4, characterized in that the two conductor strips (29, 30) are connected by welding to the connection section (31).

6. A magnetic pole according to claim 1, characterized in that at least one conductor strip section (29, 30) is properly cut at one outer longitudinal rim (29a, 30a) so that its width (e) continuously increases from the connection section (31) in longitudinal direction up to a maximum value (e1).

7. A magnetic pole according to claim 6, characterized in that the maximum value (e1) of width, viewed in longitudinal direction, is reached after a length that corresponds to a number of layers (34) which is smaller than the total number of layers (34) of the pertaining disk.

8. A magnetic pole according to claim 7 characterized in that the maximum value (e1) of the width is reached after a length of the conductor strip (29, 30) that corresponds to approximately ten layers (34).

9. A magnetic pole according to claim 6, characterized in that the longitudinal rims (29a, 30a) of conductor strip sections (29, 30) are symmetrically tailor-cut with respect to a longitudinal axis (32) extending vertically to the center axis (5) of said conductor strip (28), but with some offset formed by the connection section (31).

10. A magnetic pole according to claim 6, characterized in that the longitudinal rims (29a, 30a) are tailor-cut along straight lines or continuous curves.

11. A magnetic pole according to claim 4, characterized in that the connection section (31) is so configured that it forms the first layer of the two disks wound around said core (1) and covers a slot formed by the distance (a) of the two disks.

12. A magnetic pole according to claim 1, characterized in that said core (1) at its shell surface is wrapped by an insulation layer (3) and that a partially conductive foil is located between said insulation layer (3) and the layer (14, 34a) of said disk (11, 12) bordering it, said conductive foil resting against steps formed by tailor-cutting of said conductor strip (21, 28).