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Machine translation
1. (WO2015040213) STATIC ELECTRIC INDUCTION SYSTEM
Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

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CLAIMS

1. A static electric induction system comprising:

- cooling fluid,

- an outer shell (12) and an inner shell (14),

- a coil assembly (6) comprising a plurality of coil units (16), stacked on top of one another and positioned in between the outer and inner shells (12, 14), and a plurality of coil unit spacers (20) configured to form a plurality of intermediate fluid ducts (32) between the coil units (16),

- a first and an adjacent second sector (2, 2'), each sector (2, 2') comprising a fluid guide arrangement (A, B) having a plurality of fluid guides (24, 26), wherein

the vertical distance, as counted in coil units (16), between one pair of two subsequent fluid guides (24, 26) of a sector (2, 2') differs from a vertical distance, as counted in coil units (16), between another pair of two subsequent fluid guides (24, 26) of the same sector (2, 2') and wherein the first fluid guide arrangement (A) of the first sector (2) differs from the second fluid guide arrangement (B) of the second sector (2').

2. The static electric induction system according to claim 1, wherein the first and second fluid guide arrangements (A, B) comprise inner fluid guides (24) arranged next to the inner shell (14) and outer fluid guides (26) arranged next to the outer shell (12).

3. The static electric induction system according to claim 2, wherein the vertical distance, as counted in coil units (16), between an inner fluid guide (24) and a subsequent outer fluid guide (26) of a sector (2, 2') differs from a vertical distance, as counted in coil units (16), between the inner fluid (24) and a precedent outer fluid guide (26) of the same sector (2, 2').

4. The static electric induction system according to claim 2, wherein the vertical distance, as counted in coil units (16), between an outer fluid guide (26) and a subsequent inner fluid guide (24) of a sector (2, 2') differs from a vertical distance, as counted in coil units (16), between the outer fluid (26) and a precedent inner fluid guide (24) of the same sector (2, 2').

5. The static electric induction system according to any of the previous claims, wherein the inner and outer fluid guides (24, 26) are arranged in a non-periodical manner across at least two sectors (2, 2').

6. The static electric induction system according to any of the previous claims, comprising inner vertical fluid ducts (28) and outer vertical fluid ducts (30).

7. The static electric induction system according to the previous claim, wherein the inner and outer fluid guides (24, 26) are configured to substantially block a vertical cooling fluid flow in the inner and outer vertical fluid ducts (30, 28), respectively.

8. The static electric induction system according to any of the previous claims, wherein the first fluid guide arrangement (A) of the first sector (2) is not congruent with the second fluid guide arrangement (B) of the second sector (2').

9. The static electric induction system according to the previous claim, wherein the cooling fluid defines a fluid flow pattern (10, 10', 10") and wherein the different fluid guide arrangements (A, B, C) result in different fluid flow patterns (10, 10', 10").

10. The static electric induction system according to any of the previous claims, comprising inner and outer coil unit spacer ribs (21, 22), wherein the coil unit spacers (20) are arranged in between the inner and outer coil unit spacer ribs (21, 22).

11. The static electric induction system according to any of the previous claims, comprising a third sector (2") adjacent the second sector (2'), wherein the third sector (2") comprises a third fluid guide arrangement (C) that is different from the first and second fluid guide arrangements (A, B) of the first and second sector (2, 2').

12. The static electric induction system according to any of the previous claims, wherein a density of inner and outer fluid guides (24, 26) is higher in a top region of the coil assembly (6) than in a bottom region of the coil assembly.

13. The static electric induction system according to any of the previous claims, wherein the cooling fluid is driven by natural convection.

14. The static electric induction system according to any of the previous claims, comprising a pump drive configured to drive the cooling fluid in the static electric induction system.

15. The static electric induction system according to any of the previous claims, wherein the amount of inner and outer fluid guides (24, 26) in the first or second fluid guide arrangement (A, B) differs from the amount of inner and outer fluid guides in the third fluid guide arrangement (C).