Connection arrangement for windings of electric machines

• US 9,059,617 B2
• Filed: 09/12/2012
• Issued: 06/16/2015
• Est. Priority Date: 09/13/2011
• Status: Active Grant

• Current Assignee: General Electric Technology GmbH (GE Aerospace)
• Original Assignee: Alstom Technology Ltd. (Alstom SA)
• Inventors: Safari Zadeh, Hossein, Haldemann, Johann, Stallone, Francesco, Ballos, Konstantinos
• Primary Examiner(s): Mok, Alex W
• Application Number:
  US13/612,670
• Publication Number:
  US 20130069458A1
• Time in Patent Office: 1,007 Days
• Field of Search: 310/71, 310/179
• US Class Current: 1/1
• CPC Class Codes: H02K 2203/09 Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
• CPC Class Codes: H02K 3/505 for large machine windings, e.g. bar windings H02K3/51 takes precedence

Abstract

A connection arrangement is provided for the windings of an electric machine and includes a plurality of phase connections, each phase connection including conductors, each conductor having an annular or annular sector shape and includes a plurality of connecting ends. The conductors of each phase connection are radially shifted.

Claims

1. A connection arrangement for windings of an electric machine, the connection arrangement comprising:

a plurality of phase connections,

each phase connection including a plurality of spaced apart conductors,

wherein the spaced apart conductors of each phase connection are radially shifted, each of the spaced apart conductors has an annular or annular sector shape and comprises connecting ends, and at least a support for the conductors, each support including a plurality of yokes each having seats for the conductors projecting through the rectangular support lengthwise, and different seats of each yoke are arranged to house conductors of different phase connections, and

wherein the connecting ends pass through and project from seats of the support.

2. The connection arrangement according to claim 1, wherein the spaced apart conductors are electrically parallel conductors.

3. The connection arrangement according to claim 1, wherein the radially shifted conductors are radially stacked.

4. The connection arrangement according to claim 1, wherein the conductors of different phase connections are axially adjacent to one another.

5. The connection arrangement according to claim 1, wherein the plurality of connecting ends comprises:

inside connecting ends for windings of the electric machine, and

outside connecting ends for bushings of the electric machine.

6. An electric machine comprising a stator and a rotor, wherein:

the stator has a plurality of phases,

each phase has a plurality of windings, the windings are connected to a connection arrangement, the connection arrangement comprising;

a plurality of phase connections, each phase connection including a plurality of spaced apart conductors,

wherein the spaced apart conductors of each phase connection are radially shifted, each of the spaced apart conductors has an annular or annular sector shape and comprises connecting ends, and at least a support for the conductors, each support including a plurality of yokes each having seats for the conductors projecting through the rectangular support lengthwise, and different seats of each yoke are arranged to house conductors of different phase connections, and

wherein the connecting ends pass through and project from seats of the support.

7. The electric machine according to claim 6, wherein the connecting ends have a tubular shape and have apertures for cooling.

8. The electric machine according to claim 6, wherein the electric machine is an electric generator.