A wind turbine of the horizontal axis, direct-drive type, comprises a hub provided with one or more blades, a generator with a centerline that is technically horizontal, the generator comprising an inner rotor which is driven by the hub and an outer stator, the stator comprising a front plate, a bac
A wind turbine of the horizontal axis, direct-drive type, comprises a hub provided with one or more blades, a generator with a centerline that is technically horizontal, the generator comprising an inner rotor which is driven by the hub and an outer stator, the stator comprising a front plate, a back plate and stacked, arcuate laminates. The front plate and the back plate are connected by tension rods so as to form a stator unit with the stacked, arcuate laminates being sandwiched between the back plate and the front-plate under compression, the arcuate laminates having protrusions over the circumference of the stator for dissipating heat to the atmosphere. The invention also relates to a direct-drive generator.
대표청구항▼
1. A wind turbine of the horizontal axis, direct-drive type, wherein the wind turbine comprises: a hub provided with one or more blades, anda generator configured to mount to a tower with a centerline that makes an angle with the horizontal of up to +15° , the generator comprising an inner rotor whi
1. A wind turbine of the horizontal axis, direct-drive type, wherein the wind turbine comprises: a hub provided with one or more blades, anda generator configured to mount to a tower with a centerline that makes an angle with the horizontal of up to +15° , the generator comprising an inner rotor which is driven by the hub and an outer stator, the stator comprising a front plate, a back plate and stacked, arcuate laminate layers, each arcuate laminate layer comprising a plurality of arcuate laminate segments arranged end-to-end, wherein the arucate laminate segments of each arcaute laminate layer are independently of a size of 360°/n where n is an integer>=2, wherein each arcuate laminate layer includes a plurity of ribs, each rib being disposed to cover end-to-end regions of a pair of associated arcuate laminate segments, each rib configured to inhibit moisture from entering the generator through the end-to-end arrangement of the associated arcuate laminate segments, wherein the end-to-end arrangement of arcuate laminate segments of one arcuate laminate layer is staggered with respect to the end-to-end arrangement of arcuate laminate segments of other arcuate laminate layers about a centreline of the generator, and wherein the front plate and the back plate are connected by tension rods so as to form a stator unit with the stacked, arcuate laminate segments being sandwiched between the back plate and the front-plate under compression, the arcuate laminate segments having protrusions over the circumference of the stator for dissipating heat to the atmosphere. 2. The wind turbine according to claim 1, wherein protrusions of stacked adjacent arcuate laminate segments along the centreline are in register, forming ribs. 3. The wind turbine according to claim 1, wherein each arcuate laminate segment has at least one through-hole, and the tension rods pass through the through-holes. 4. The wind turbine according to claim 1, wherein the back plate has a sandwich structure. 5. The wind turbine according to claim 4, wherein the sandwich structure has a nose. 6. The wind turbine according to claim 1, wherein the centerline of the generator is at an angle of >2° to the horizontal. 7. A direct-drive generator comprising an inner rotor and an outer stator about a centerline, the stator comprising a front plate, a back plate and stacked arcuate laminate layers, wherein each arcuate laminate layer comprises a plurality of arcuate laminate segments arranged end-to-end about the centerline, wherein each arcuate laminate layer includes a plurality of ribs, each rib being disposed to cover end-to-end regions of a pair of associated arcuate laminate segments, each rib configured to inhibit moisture from entering the generator through the end-to-end arrangement of the associated arcuate laminate segments, wherein the front plate and the back plate are connected by tension rods so as to form a stator unit with the stacked arcuate laminate segments being sandwiched between the back plate and the front-plate under compression, the arcuate laminate segments having protrusions over the circumference of the stator for dissipating heat. 8. The direct-drive generator according to claim 7, wherein protrusions of stacked adjacent arcuate laminate segments along the centerline are in register, forming ribs. 9. The direct-drive generator according to claim 7, wherein each arcuate laminate segment has at least one through-hole, and the tension rods pass through the through-holes. 10. The direct-drive generator according to any of claim 7, wherein the back plate has a sandwich structure. 11. The direct-drive generator according to claim 7, wherein the sandwich structure has a nose. 12. The direct-drive generator according to claim 7, wherein the centerline of the generator is at an angle of >2° to the horizontal. 13. The direct-drive generator according to claim 7 wherein the end-to-end arrangement of arcuate laminate segments about the centreline of one arcuate laminate layer is staggered with respect to the end-to-end arrangement of arcuate laminate segments about the centreline of another arcuate laminate layer. 14. The wind turbine according to claim 1 wherein the end-to-end arrangement of arcuate laminate segments about the centreline of one arcuate laminate layer is staggered with respect to the end-to-end arrangement of arcuate laminate segments about the centreline of another arcuate laminate layer such that the end-to-end arrangement of arcuate laminate segments of said one arcuate laminate layer do not align with the end-to-end arrangement of arcuate laminate segments of an adjacent arcuate laminate layer. 15. The direct-drive generator according to claim 13 wherein each rib is joined to arcuate laminate segments of a plurality of arcuate laminate layers extending along a length of the stator. 16. The direct drive generator according to claim 15 wherein each rib is fixedly joined to a plurality of arcuate laminate segments over a plurality of arcuate laminate layers. 17. The wind turbine according to claim 1 wherein arcuate laminate segments of said one arcuate laminate layer cover end-to-end arrangements of arcuate laminate segments of an arcuate laminate layer adjacent to said one arcuate laminate layer.
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이 특허에 인용된 특허 (3)
Jeffrey Ronald Coles GB; Marc Holme GB; James Patrick Doyle GB, Electrical generator an aero-engine including such a generator, and an aircraft including such a generator.
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