Method for winding an electric machine rotor

Patent metadata

Field	Value
Publication number	US-12003153-B2
Application number	US-202017791801-A
Country	US
Kind code	B2
Filing date	Nov 30, 2020
Priority date	Jan 10, 2020
Publication date	Jun 4, 2024
Grant date	Jun 4, 2024

Abstract

A wound rotor, such as a wound rotor for an electric machine, includes a shaft having a main axis. The shaft includes a manifold. The wound rotor also includes a winding wire and n poles wound and ordered with an ascending order number obtained by rotation about the main axis. The n wound poles can be distributed radially about the main axis. The n poles are wound with the wire in series in turn according to their ascending order numbers, the last pole, however, not being wound last.

First claim

The invention claimed is:

1. A wound rotor, comprising:
a shaft with main axis, the shaft comprising a slipring;
a winding wire; and
n wound poles ordered in ascending numerical order obtained by rotation about the main axis,
wherein the n wound poles are wound with the wire in series turn by turn according to their ascending numerical order, although a last pole of the n would poles is not the last to be wound.

2. The wound rotor as claimed in claim 1 , wherein the n wound poles are distributed radially about the main axis.

3. The wound rotor as claimed in claim 1 , wherein a penultimate pole of the n wound poles is wound after the last pole.

4. The wound rotor as claimed in claim 1 , wherein an antepenultimate pole of the n wound poles is wound after the last pole.

5. The wound rotor as claimed in claim 1 , wherein upstream of a first pole of the n wound poles, the wire rests against the shaft at a first non-zero angle about the main axis.

6. The wound rotor as claimed in claim 1 , wherein downstream of the last pole to be wound, the wire rests against the shaft at a second non-zero angle about the main axis.

7. The wound rotor as claimed in claim 1 , further comprising:
pins configured to facilitate the winding of the wire.

8. The wound rotor as claimed in claim 7 , wherein the pins run parallel or substantially parallel to the main axis.

9. The wound rotor as claimed in claim 1 , further comprising:
pins configured to facilitate the winding of the wire between two adjacent poles and/or between each pole and the shaft and/or the slipring.

10. The wound rotor as claimed in claim 9 , wherein the pins run parallel or substantially parallel to the main axis.

11. An electric machine, comprising:
the wound rotor as claimed in claim 10 .

12. A vehicle, comprising:
the electric machine as claimed in claim 11 .

13. The vehicle as claimed in claim 12 , wherein the vehicle is a motor vehicle.

14. A vehicle, comprising:
the wound rotor as claimed in claim 10 .

15. The vehicle as claimed in claim 14 , wherein the vehicle is a motor vehicle.

16. A method for obtaining the wound rotor as claimed in claim 1 , comprising:
winding the n poles with the wire in series turn by turn in their ascending numerical order, although the last pole is not the last to be wound.

Assignees

• Renault Sas
• Nissan Motor

Inventors

• Birolleau Damien
• Motte Emmanuel
• Vivas-Marquez Daniella

Classifications

• H02K19/12 Primary

  characterised by the arrangement of exciting windings, e.g. for self-excitation, compounding or pole-changing · CPC title

• H02K1/26 Primary

  Rotor cores with slots for windings · CPC title

• H02K3/28

  Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32) · CPC title

• H02K3/46

  Fastening of windings on the stator or rotor structure · CPC title

• H02K13/02 Primary

  Connections between slip-rings and windings · CPC title