Electric connection for a rotor winding of an electrical generator

Patent metadata

Field	Value
Publication number	US-12308709-B2
Application number	US-202118268368-A
Country	US
Kind code	B2
Filing date	Dec 1, 2021
Priority date	Dec 23, 2020
Publication date	May 20, 2025
Grant date	May 20, 2025

Abstract

An electrical connector is provided for electrically connecting a rotor of an electric generator to a slip ring and includes: a first support cartridge, the first support cartridge being electrically isolated, at least a second support cartridge distanced from the first support cartridge along a longitudinal axis of the electrical connector, the second support cartridge being electrically isolated, at least one conductive bar extending along the longitudinal axis, the conductive bar being fixed to the first support cartridge and the second support cartridge, and a winding connector for electrically connecting the at least one conductive bar to a rotor winding of the rotor.

First claim

The invention claimed is:

1. An electrical connector for electrically connecting a rotor of an electric generator to a slip ring, the electrical connector comprising:
a first support cartridge, the first support cartridge being electrically isolated,
at least a second support cartridge distanced from the first support cartridge along a longitudinal axis of the electrical connector, the second support cartridge being electrically isolated,
at least one conductive bar extending along the longitudinal axis, the at least one conductive bar being fixed to the first support cartridge and the second support cartridge, and
a winding connector for electrically connecting the at least one conductive bar to a rotor winding of the rotor,
wherein the electrical connector comprises a hollow housing, and wherein the electrical connector comprises an insulating filler provided between the hollow housing and the at least one conductive bar, and
wherein the electrical connector is configured to be housed within an axial cavity of a rotor shaft of the rotor.

2. The electrical connector as claimed in claim 1 , wherein the electrical connector comprises a plurality of conductive bars, each conductive bar extending along the longitudinal axis and being fixed to the first support cartridge and the second support cartridge, the plurality of conductive bars being distributed about the longitudinal axis.

3. The electrical connector as claimed in claim 1 , wherein the electrical connector comprises a slip ring connector for electrically connecting the at least one conductive bar to an external surface of the slip ring.

4. The electrical connector as claimed in claim 3 , wherein the winding connector and the slip ring connector are provided at longitudinally opposite ends of the electrical connector.

5. A rotor for an electric generator comprising a rotor winding, a rotor shaft, and an electrical connector,
the electrical connector being attached to the rotor shaft and having a first support cartridge, the first support cartridge being electrically isolated, at least a second support cartridge distanced from the first support cartridge along a longitudinal axis of the electrical connector, the second support cartridge being electrically isolated, at least one conductive bar extending along the longitudinal axis, the at least one conductive bar being fixed to the first support cartridge and the second support cartridge, and a winding connector for electrically connecting the at least one conductive bar to the rotor winding,
wherein the electrical connector comprises a hollow housing, and wherein the electrical connector comprises an insulating filler provided between the hollow housing and the at least one conductive bar, and
wherein the rotor shaft comprises an axial cavity for housing the electrical connector.

6. An electric generator comprising a rotor having a rotor winding, a rotor shaft, a slip ring, and an electrical connector,
the electrical connector being attached to the rotor shaft and providing an electrical connection between the rotor winding and the slip ring, the electrical connector having a first support cartridge,
the first support cartridge being electrically isolated,
at least a second support cartridge distanced from the first support cartridge along a longitudinal axis of the electrical connector, the second support cartridge being electrically isolated,
at least one conductive bar extending along the longitudinal axis, the at least one conductive bar being fixed to the first support cartridge and the second support cartridge, and a winding connector for electrically connecting the at least one conductive bar to the rotor winding of the rotor,
wherein the rotor shaft comprises an axial cavity for housing the electrical connector,
wherein the electrical connector comprises a hollow housing, and wherein the electrical connector comprises an insulating filler provided between the hollow housing and the at least one conductive bar.

7. A wind turbine comprising the electric generator according to claim 6 .

Assignees

• Siemens Gamesa Renewable Energy Innovation & Technology SL

Inventors

• Sacristan San Martin Juan Manuel
• Sedano Perez Ibon
• Cueto Diaz Lucas
• Fojtikova Ivana
• Mericka Frantisek

Classifications

• H02K7/183

  wherein the turbine is a wind turbine (adaptation of a wind turbine to an electric generator F03D9/25) · CPC title

• F05B2220/706

  an electrical generator · CPC title

• F03D9/25

  the apparatus being an electrical generator (F03D9/22 takes precedence) · CPC title

• Y02E10/72

  Wind turbines with rotation axis in wind direction · CPC title

• H01R39/34

  Connections of conductor to slip-ring · CPC title