Stator arrangement
View Patent ↗A stator arrangement for an electric machine is provided. The stator arrangement includes a stator having a stator yoke with a number of stator slots, with each stator slot accommodating at least one set of stator windings and at least one cooling device in the shape of a duct-like pipe. The duct-like pipe is divided in two or more separate cooling channels.
1. A stator arrangement for an electric machine, comprising:
a stator having a stator yoke with a plurality of stator slots, with each stator slot accommodating at least one set of stator windings, and
at least one cooling device in the shape of a duct-like pipe, wherein the duct-like pipe is divided into a plurality of separate cooling channels,
wherein the inlet and outlet of the duct-like pipe is disposed on the same axial face side of the stator yoke.
2. The stator arrangement according to claim 1 ,
wherein each of the plurality of separate cooling channels has the same cross-sectional shape.
3. The stator arrangement according to claim 1 ,
wherein the plurality of separate cooling channels are integrally formed in the duct-like pipe.
4. The stator arrangement according to claim 1 ,
wherein the duct-like pipe is built of an aluminium profile.
5. The stator arrangement according to claim 1 ,
wherein the plurality of separate cooling channels are symmetrically disposed with respect to a centre axis of the stator.
6. The stator arrangement according to claim 1 ,
wherein the duct-like pipe and/or at least one of the plurality of separate cooling channels has a rectangular cross section.
7. The stator arrangement according to claim 1 ,
wherein the duct-like pipe is connected to a cooling manifold.
8. The stator arrangement according to claim 1 ,
wherein the course of the duct-like pipe at least partially follows the course of the at least one set of stator windings.
9. The stator arrangement according to claim 8 ,
wherein the course of the duct-like pipe entirely follows the course of the at least one set of stator windings.
10. The stator arrangement according to claim 1 ,
wherein the stator is segmented in at least two stator segments adapted to build the stator.
11. An electric machine, comprising a stator arrangement according to claim 1 .
12. The electric machine of claim 11 ,
wherein the electric machine is generator for a wind turbine.
13. The stator arrangement according to claim 1 ,
wherein the plurality of separate cooling channels includes a first cooling channel and a second cooling channel and the first cooling channel has different cross-sectional shape than the second cooling channel.
14. The stator arrangement according to claim 1 ,
wherein each of the plurality of separate cooling channels has the same length.
15. The stator arrangement according to claim 1 ,
wherein the plurality of separate cooling channels includes a first cooling channel and a second cooling channel and the first cooling channel has different length than the second cooling channel.
16. The stator arrangement according to claim 1 ,
wherein each of the plurality of separate cooling channels has the cross sectional area.
17. The stator arrangement according to claim 1 ,
wherein the plurality of separate cooling channels includes a first cooling channel and a second cooling channel and the first cooling channel has different cross sectional area than the second cooling channel.