초록 ▼

The invention relates to an annular rotor having a hollow shaft for an electric machine. In order to allow transport of such a machine, particularly for a very large model, the rotor is divided in the circumferential direction into a plurality of partial annular rotor segments (1). The rotor further

The invention relates to an annular rotor having a hollow shaft for an electric machine. In order to allow transport of such a machine, particularly for a very large model, the rotor is divided in the circumferential direction into a plurality of partial annular rotor segments (1). The rotor further comprises a hollow shaft, wherein the closed ring shape of the rotor can be broken by separating the rotor segments (1) from each other.

대표청구항 ▼

1. A generator of a gearless wind-power plant, said generator comprising: an annular rotor subdivided circumferentially into a plurality of partially annular rotor segments and having a hollow shaft, said rotor having a closed ring shape which can be dissolved by separating the rotor segments from e

1. A generator of a gearless wind-power plant, said generator comprising: an annular rotor subdivided circumferentially into a plurality of partially annular rotor segments and having a hollow shaft, said rotor having a closed ring shape which can be dissolved by separating the rotor segments from each other; anda stator subdivided circumferentially into a plurality of partially annular stator segments, with a number of stator segments being the same as a number of rotor segments,wherein the rotor segments and the stator segments are placed in one-to-one correspondence with arc-shaped circumferences defined by a substantially identical central angle around an axis of the rotor and the stator,wherein the rotor has two front sides having two front faces spaced from one another in an axial direction,wherein two annular flanges extend along the two front faces of the front sides of the rotor for connection of the rotor segments,wherein the rotor segments include partially annular magnetic steel sheets stacked in an axial direction of the rotor. 2. The generator of claim 1, wherein the rotor constitutes an external rotor of the wind-power plant. 3. The generator of claim 1, wherein each rotor segment has at least one permanent magnet. 4. The generator of claim 3, wherein each rotor segment has a magnet pouch for receiving the permanent magnet. 5. A wind-power plant, comprising a generator including an annular rotor subdivided circumferentially into a plurality of partially annular rotor segments and having a hollow shaft, said rotor having a closed ring shape which can be dissolved by separating the rotor segments from each other, and a stator subdivided circumferentially into a plurality of partially annular stator segments, with a number of stator segments being the same as a number of rotor segments, wherein the rotor segments and the stator segments are placed in one-to-one correspondence and have arc-shaped circumferences defined by a substantially identical central angle around an axis of the rotor and the stator, wherein the rotor has two front sides having two front faces spaced from one another in an axial direction, wherein two annular flanges extend along the two front faces of the front sides of the rotor for connection of the rotor segments, wherein the rotor segments include partially annular magnetic steel sheets stacked in an axial direction of the rotor. 6. The wind-power plant of claim 5, wherein the rotor constitutes an external rotor of the wind-power plant. 7. The wind-power plant of claim 5, wherein each rotor segment has at least one permanent magnet. 8. The wind-power plant of claim 7, wherein each rotor segment has a magnet pouch for receiving the permanent magnet. 9. A method for producing a generator, comprising: fitting a plurality of partially annular rotor segments with permanent magnets;fitting a plurality of partially annular stator segments with coils;joining the partially annular rotor segments to the partially annular stator segments in one-to-one correspondence to form a partially annular machine element around an axis of the rotor and the stator;joining annular flanges to two front faces of opposite front sides of the rotor spaced from one another in an axial direction so that the annular flanges extend along the two front faces of the front sides of the rotor and connecting the rotor segments; andjoining a plurality of said machine element to form a closed ring. 10. The method of claim 9, further comprising mounting the machine element directly onto a flange of a turbine of a wind-power plant and mounting the plurality of joined machine elements on said flange. 11. The method of claim 9, wherein the rotor segments are produced by punching partially annular magnetic steel sheets and stacking the punched magnetic steel sheets in an axial direction of the rotor. 12. The generator of claim 1, wherein the stator has two front sides spaced from one another in the axial direction and each including a further annular flange for connection of the stator segments. 13. The wind-power plant of claim 5, wherein the stator has two front sides spaced from one another in the axial direction and each including a further annular flange for connection of the stator segments. 14. The method of claim 9, further comprising joining annular flanges to opposite front sides of the stator spaced from one another in the axial direction for connection of the stator segments. 15. The generator of claim 1, wherein the annular flanges are placed directly on the front faces of the rotor so that the annular flanges are in contact with the front faces of the rotor. 16. The wind power plant of claim 5, wherein the annular flanges are placed directly on the front faces of the rotor so that the annular flanges are in contact with the front faces of the rotor. 17. The method of claim 9, wherein the joining of the annular flanges includes placing of the annular flanges on the front faces of the rotor so that the annular flanges are in contact with the from faces of the rotor. 18. The generator of claim 1, wherein the stator has two front sides having two front faces spaced from one another in an axial direction, wherein further annular flanges extend along the front faces of the stator for connection of the stator segments, wherein at each front side of the rotor and the stator the annular flange and the further annular flange extend in a circumferential direction as a continuation of each other, and at each side of the rotor and the stator the annular flange and the further annular flange are in contact with each other. 19. The wind power plant of claim 5, wherein the stator has two front sides having two front faces spaced from one another in an axial direction, wherein further annular flanges extend along the front faces of the stator for connection of the stator segments, wherein at each front side of the rotor and the stator the annular flange and the further annular flange extend in a circumferential direction as a continuation of each other, and wherein at each side of the rotor and the stator the annular flange and the further annular flange are in contact with each other. 20. The method of claim 9, further comprising extending further annular flanges along two front faces of two front sides of the stator which are spaced from one another in an axial direction for connection of the stator segments, extending the annular flanges and the further annular flange in a circumferential direction as a continuation of each other at each front side of the rotor and the stator and also in contact with each other.