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US 11,028,834 B2Granted
Generator for a wind turbine
AssigneeSiemens Gamesa Renewable Energy A/S
InventorPeter Hessellund Soerensen
Life of this patent
Estimating the term…
Abstract
A generator for a wind turbine, a direct drive wind turbine, and a method for manufacturing a generator for a wind turbine is provided. The generator includes a rotor, and a stator, wherein the stator includes a first radial side and a second radial side which is opposite of the first radial side, and wherein the rotor is arranged adjacent to the first radial side. The generator further includes a flow distribution element which is arranged adjacent to the second radial side such that a circumferential flow channel is formed between the flow distribution element and the second radial side.
Claims12
A generator for a wind turbine, comprising:
- a rotor, wherein the rotor is an outer rotor;
- a stator comprising a plurality of stator laminations, wherein the stator comprises a first radial side and a second radial side which is opposite of the first radial side, wherein the rotor is arranged adjacent to the first radial side, wherein the stator is an inner stator, and in between two adjacently disposed stator laminations, a radial air duct is formed such that cooling fluid entering the rotor through a cooling opening flows along a radial inner side of the rotor and through the respective air ducts to an inside of the stator;
- and
- a flow distribution element which is arranged adjacent to the second radial side such that a circumferential flow channel is formed between the flow distribution element and the second radial side;
- wherein the flow distribution element comprises a base body which comprises a first axial end and a second axial end, the stator further comprising a first axial stator end and a second axial stator end, wherein the first axial stator end and the second axial stator end are arranged at opposite axial ends of the stator;
- wherein the flow distribution element further comprises a separation element which extends between the base body and the second radial side, and wherein the separation element separates a circumferential flow channel in two parts which are not in fluid communication over the separation element, wherein the two parts of the circumferential flow channel are a first part between the first axial end of the flow distribution element and the separation element and a second part between the separation element and the second axial end of the flow distribution element.
3 more elements
A method for manufacturing a generator for a wind turbine, comprising:
- providing a rotor, the rotor being an outer rotor;
- providing a stator comprising a plurality of stator laminations, wherein the stator comprises a first radial side and a second radial side which is opposite of the first radial side, wherein the rotor is arranged adjacent to the first radial side, wherein the stator is an inner stator, and in between two adjacently disposed stator laminations, a radial air duct is formed such that cooling fluid entering the rotor through a cooling opening flows along a radial inner side of the rotor and through the respective air ducts to an inside of the stator;
- and
- providing a flow distribution element adjacent to the second radial side such that a circumferential flow channel is formed between the flow distribution element and the second radial side;
- wherein the flow distribution element comprises a base body which comprises a first axial end and a second axial end, wherein the stator further comprises a first axial stator end and a second axial stator end, wherein the first axial stator end and the second axial stator end are arranged at opposite axial ends of the stator, wherein the method further comprises:
- determining a shape of an axial extension of the base body dependent on a fluid flow in the circumferential flow channel;
- wherein the flow distribution element further comprises a separation element and a base body which comprises a first axial end and a second axial end, wherein the stator further comprises a first axial stator end and a second axial stator end, wherein the first axial stator end and the second axial stator end are arranged at opposite axial ends of the stator;
- wherein the separation element separates a circumferential flow channel in two parts which are not in fluid communication over the separation element, wherein the two parts of the circumferential flow channel are a first part between the first axial end of the flow distribution element and the separation element and a second part between the separation element and the second axial end of the flow distribution element.
5 more elements
Dependencies are inferred from the claim text.