Active part of an electrical machine having inclined coils in the winding head area

• US 9,276,446 B2
• Filed: 05/11/2011
• Issued: 03/01/2016
• Est. Priority Date: 08/27/2010
• Status: Active Grant

• Current Assignee: Flender GmbH (Siemens AG)
• Original Assignee: Siemens AG
• Inventors: Schnbauer, Norbert, Mhle, Axel
• Primary Examiner(s): Kim, John K
• Application Number:
  US13/819,160
• Publication Number:
  US 20130154429A1
• Time in Patent Office: 1,756 Days
• Field of Search: 310/194, 310/208, 310/260, 310/270, 310/198
• US Class Current: 1/1
• CPC Class Codes: H02K 1/145 having an annular coil, e.g. of the claw-pole type
• CPC Class Codes: H02K 15/0025 Shaping or compacting conductors or winding heads after the installation of the winding in the core or machine methods or apparatus for simultaneously twisting a plurality of hairpins prior to mounting H02K15/0428; Applying fastening means on winding heads
• CPC Class Codes: H02K 15/0037 Shaping or compacting winding heads H02K15/005, H02K15/0087 and H02K15/0428 take precedence
• CPC Class Codes: H02K 15/085 by laying conductors into slotted stators
• CPC Class Codes: H02K 3/04 Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
• CPC Class Codes: H02K 3/12 arranged in slots
• CPC Class Codes: H02K 3/28 Layout of windings or of connections between windings windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32
• CPC Class Codes: H02K 3/505 for large machine windings, e.g. bar windings H02K3/51 takes precedence

Abstract

An active part of an electrical machine has a carrier, a plurality of coils which are arranged on the carrier and which each include a plurality of sub-conductors and a winding head area, in which the coils project out of the carrier in a curved shape, respectively and are connected to one another. At least one of the plurality of coils has a coil arc in the winding head area, and the center line of the coil runs in one plane in the coil arc. The sub-conductors of one coil run parallel to the plane in the coil arc of the coil and themselves in each case form sub-conductor arcs. The vertices of the sub-conductor arcs of the coil form a line of inclination which runs at an angle to the plane.

Claims

1. An active part of an electrical machine, comprising:

a carrier having a front face and defining a main axis;

a winding head area; and

a plurality of coils arranged on the carrier and having each a plurality of sub-conductors, said coils projecting out from the front face of the carrier in an arced shape into the winding head area and being connected to one another, each of the coils having a coil arc in the winding head area and defining a center line which essentially runs in a plane in the coil arc, with the sub-conductors of the coil running parallel to the plane in the coil arc and configured to form sub-conductor arcs having vertices that define a line of inclination which extends at an angle to the front face of the carrier and at an angle to the main axis of the carrier,

wherein three adjacent ones of the coils define planes which are arranged at angles of 0°

, 45° and

90°

in relation to the front face of the carrier.

2. The active part of claim 1, constructed in the form of member selected of the group consisting of a stator and a rotor.

3. The active part of claim 1, further comprising a connecting element arranged on the line of inclination of the sub-conductor arcs of the coil.

4. The active part of claim 2, wherein the plurality of coils are arranged in spaced-apart relationship, with the planes of the adjacent coils arranged at an angle relative to one another in the winding head area.

5. The active part of claim 1, wherein the three adjacent coils are assigned the phases U, V and W of a three-phase system.

6. The active part of claim 1, wherein the three coils are of different lengths.

7. A motor or generator, comprising an active part which includes a carrier having a front face and defining a main axis, a winding head area, and a plurality of coils arranged on the carrier and having each a plurality of sub-conductors, said coils projecting out from the front face of the carrier in an arced shape into the winding head area and being connected to one another, each of the coils having a coil arc in the winding head area and defining a center line which essentially runs in a plane in the coil arc, with the sub-conductors of the coil running parallel to the plane in the coil arc and configured to form sub-conductor arcs having vertices that define a line of inclination which extends at an angle to the front face of the carrier and at an angle to the main axis of the carrier, wherein three adjacent ones of the coils define planes which are arranged at angles of 0°

, 45° and

90°

in relation to the front face of the carrier.

8. The motor or generator of claim 7, further comprising a member selected of the group consisting of a stator and a rotor.

9. The motor or generator of claim 7, wherein the active part has a connecting element arranged on the line of inclination of the sub-conductor arcs of the coil.

10. The motor or generator of claim 8, wherein the plurality of coils are arranged in spaced-apart relationship, with the planes of the adjacent coils arranged at an angle relative to one another in the winding head area.

11. The motor or generator of claim 7, wherein the three adjacent coils are assigned the phases U, V and W of a three-phase system.

12. The motor or generator of claim 7, wherein the three coils are of different lengths.