Flux shield having split structures and generator including the same

1. A flux shield mounted on either end of a generator and adapted to shield a magnetic flux introduced from an outside to an inside of the generator, the flux shield comprising:

a split structure formed by two or more separate pieces spaced apart from each other in a circumferential direction by a specific interval,

wherein each of the two or more separate pieces is discretely formed as an arc-shaped segment of an annulus corresponding to a surface area of one end of the generator, the arc-shaped segment of the annulus including a first surface perpendicular to an axis of the generator and a second surface formed at an inner diameter of the annulus,

wherein, for each of the two or more separate pieces, the first and second surfaces communicate with each other via a curved portion extending in the circumferential direction of the arc-shaped segment and corresponding to a structure of the one end of the generator, the curved portion including a stepped structure formed of a plurality of steps radially arranged between the first and second surfaces.

2. The flux shield of claim 1 , wherein the flux shield has a size and shape corresponding to the ends of the generator.

3. The flux shield of claim 2 , wherein the annulus has a shape of a circle whose diameter corresponds to a width of the ends of the generator.

4. The flux shield of claim 2 , wherein the curved portion includes a plurality of curvatures radially arranged between the first and second surfaces.

5. The flux shield of claim 1 , wherein the split structure exhibits radial point symmetry on a plane.

6. The flux shield of claim 1 , wherein the split structure exhibits left and right symmetry or top and bottom symmetry on a plane.

7. The flux shield of claim 1 , wherein the two or more separate pieces of the split structure include a first set of radially inwardly disposed separate pieces comprising the curved portion and at least one second set of radially outwardly disposed separate pieces respectively encircle the radially inwardly disposed separate pieces, the radially outwardly disposed separate pieces spaced apart from each other in the circumferential direction by the specific interval.

8. The flux shield of claim 1 , wherein the flux shield includes copper or aluminum.

9. The flux shield of claim 1 , wherein the specific interval is in the range of 1 to 100 mm.

10. The flux shield of claim 1 , wherein the two or more separate pieces of the split structure number between two and twelve.

11. A flux shield mounted on either end of a generator and adapted to shield a magnetic flux introduced from an outside to an inside of the generator, the flux shield comprising:

a first split structure formed by two or more first separate pieces spaced apart from each other in a circumferential direction by a specific interval, each of the two or more first separate pieces having an inner circumferential side and an outer circumferential side disposed radially outward from the inner circumferential side; and

a second split structure formed by two or more second separate pieces spaced apart from each other in the circumferential direction by the specific interval, the second split structure disposed radially outward from the first split structure so as to encircle the outer circumferential sides of the two or more first separate pieces.

12. The flux shield of claim 11 , wherein each of the first and second separate pieces is discretely formed as an arc-shaped segment of an annulus corresponding to a surface area of one end of the generator, the arc-shaped segment of the annulus including a first surface perpendicular to an axis of the generator and a second surface formed at an inner diameter of the annulus.

13. The flux shield of claim 11 , wherein the first and second surfaces of the first split structure communicate with each other via a curved portion extending in the circumferential direction of the arc-shaped segment and corresponding to a structure of the one end of the generator, the curved portion including a stepped structure formed of a plurality of steps radially arranged between the first and second surfaces.

14. A generator comprising a flux shield mounted on either end of the generator and adapted to shield a magnetic flux introduced from an outside to an inside of the generator, wherein the flux shield comprises:

a split structure formed by two or more separate pieces spaced apart from each other in a circumferential direction by a specific interval,

wherein each of the two or more separate pieces is discretely formed as an arc-shaped segment of an annulus corresponding to a surface area of one end of the generator, the arc-shaped segment of the annulus including a first surface perpendicular to an axis of the generator and a second surface formed at an inner diameter of the annulus, and

wherein, for each of the two or more separate pieces, the first and second surfaces communicate with each other via a curved portion extending in the circumferential direction of the arc-shaped segment and corresponding to a structure of the one end of the generator, the curved portion including a stepped structure formed of a plurality of steps radially arranged between the first and second surfaces.

15. The generator of claim 14 , wherein the flux shield has a size and shape corresponding to the ends of the generator.

16. The generator of claim 15 , wherein the annulus has a diameter corresponding to a width of the ends of the generator.

17. The flux shield of claim 14 , wherein the curved portion includes a plurality of curvatures radially arranged between the first and second surfaces.

18. The generator of claim 14 , wherein the split structure includes radial point symmetry on a plane.

19. The generator of claim 14 , wherein the split structure includes a left and right symmetry or a top and bottom symmetry on a plane.

20. The generator of claim 14 , wherein the two or more separate pieces of the split structure include a first set of radially inwardly disposed separate pieces comprising the curved portion and at least one second set of radially outwardly disposed separate pieces respectively encircle the radially inwardly disposed separate pieces, the radially outwardly disposed separate pieces spaced apart from each other in the circumferential direction by the specific interval.