Choke for a multi-conductor system
In an embodiment a choke includes a core assembly and a winding block having a predetermined number of turns for each conductor of a multi-conductor system, wherein the core assembly comprises at least one stacking unit comprising a closed ring and a separation unit, wherein the separation unit comprises a separation segment for each conductor, the separation segments being arranged on a first surface of the ring in a pre-determined spaced-apart relationship along a circumferential line of the ring such that a gap is present between each of the adjacent separation segments, wherein each separation segment comprises a ferromagnetic material and/or the closed ring is formed as a closed magnetic toroidal core, wherein the core assembly has an inner opening enclosed by the ring and at least partially by the separation unit, and wherein the winding blocks are arranged in correspondence with the separation segments so that windings of respective winding blocks extend through the inner opening of the core assembly and enclose the ring and the corresponding separation segment.
1 . A choke for a multi-conductor system comprising:
a core assembly; and
a plurality of winding blocks, each winding block having a number of turns for each conductor of the multi-conductor system,
wherein the core assembly comprises at least one stacking unit comprising a closed ring and a separation unit,
wherein the separation unit comprises a separation segment for each conductor, the separation segments being arranged on a first surface of the closed ring in a pre-determined spaced-apart relationship along a circumferential line of the closed ring such that a gap is present between each of adjacent separation segments,
wherein each separation segment comprises a ferromagnetic material,
wherein the core assembly has an inner opening enclosed by the closed ring and enclosed at least partially by the separation unit,
wherein each winding block of the winding blocks extends through the inner opening and surrounds the closed ring and a corresponding separation segment, and
wherein each winding of the winding blocks encloses all closed rings and all separation units of the stacking unit.
2 . The choke according to claim 1 , wherein each winding block has an identical number of turns and/or an identical winding direction.
3 . The choke according to claim 1 , wherein the winding blocks are arranged along the circumferential line of the closed ring such that respective distances between immediately adjacent winding blocks are equal.
4 . The choke according to claim 1 , wherein respective distances between adjacent separation segments are equal.
5 . The choke according to claim 1 , wherein each winding block has only turns in a region of the respective corresponding separation segment.
6 . The choke according to claim 1 , further comprising a non-magnetic filling material arranged at least in a part of the gaps.
7 . The choke according to claim 6 , wherein the filling material is also arranged outside the gaps such that it forms separating bars which separate the winding blocks.
8 . The choke according to claim 6 ,
wherein an air gap is located between the respective filling material and the adjacently arranged separation segment, and/or
wherein a joining part, which comprises the filling material and is arranged in the gaps, comprises one or more air slots.
9 . The choke according to claim 1 , wherein the closed ring of the at least one stacking unit comprises a single closed ferromagnetic circular toroidal core element or a stack of a plurality of closed ferromagnetic circular toroidal core elements.
10 . The choke according to claim 1 , wherein at least one of the separation segments of the at least one stacking unit comprises a section or sector of a ring comprising a single closed ferromagnetic circular toroidal core element or a stack of a plurality of closed ferromagnetic circular toroidal core elements.
11 . The choke according to claim 1 , wherein at least one of the separation segments of the at least one stacking unit comprises a single I-core or a plurality of I-cores stacked parallel to the first surface or standing vertically on the first surface.
12 . The choke according to claim 1 , wherein the core assembly comprises a plurality of the stacking units arranged along a longitudinal axis of the choke and each of the windings of the winding blocks encloses all rings and the separation units of the stacking units together.
13 . The choke according to claim 1 , further comprising a non-magnetic filling material arranged at least in a part of the gaps.
14 . The choke according to claim 13 ,
wherein the filling material is also arranged outside the gaps such that it forms separating bars which separate the winding blocks, or
wherein an air gap is located between the respective filling material and the adjacently arranged separation segment, and/or wherein a joining part, which comprises the filling material and is arranged in the gaps, comprises one or more air slots.
15 . A choke for a multi-conductor system comprising:
a core assembly; and
a plurality of winding blocks, each winding block having a number of turns for each conductor of the multi-conductor system,
wherein the core assembly comprises at least one stacking unit comprising a closed ring and a separation unit,
wherein the separation unit comprises a separation segment for each conductor, the separation segments being arranged on a first surface of the closed ring in a pre-determined spaced-apart relationship along a circumferential line of the closed ring such that a gap is present between each of adjacent separation segments,
wherein the closed ring is formed as a closed magnetic toroidal core,
wherein the core assembly has an inner opening enclosed by the closed ring and enclosed at least partially by the separation unit,
wherein each winding block of the winding blocks extends through the inner opening and surrounds the closed ring and a corresponding separation segment, and
wherein each winding of the winding blocks encloses all closed rings and all separation units of the stacking unit.
16 . The choke according to claim 15 , wherein each winding block has an identical number of turns and/or an identical winding direction.
17 . The choke according to claim 15 , wherein the winding blocks are arranged along the circumferential line of the closed ring such that respective distances between immediately adjacent winding blocks are equal.
18 . The choke according to claim 15 , wherein respective distances between adjacent separation segments are equal.
19 . The choke according to claim 15 , wherein each winding block has only turns in a region of the respective corresponding separation segment.
20 . The choke according to claim 15 , wherein the closed ring of the at least one stacking unit comprises a single closed ferromagnetic circular toroidal core element or a stack of a plurality of closed ferromagnetic circular toroidal core elements.
21 . The choke according to claim 15 , wherein at least one of the separation segments of the at least one stacking unit comprises a section or sector of a ring comprising a single closed ferromagnetic circular toroidal core element or a stack of a plurality of closed ferromagnetic circular toroidal core elements.
22 . A choke for a multi-conductor system comprising:
a core assembly; and
a plurality of winding blocks, each winding block having a number of turns for each conductor of the multi-conductor system,
wherein the core assembly comprises at least one stacking unit comprising a closed ring and a separation unit,
wherein the separation unit comprises a separation segment for each conductor, the separation segments being arranged on a first surface of the closed ring in a pre-determined spaced-apart relationship along a circumferential line of the closed ring such that a gap is present between each of adjacent separation segments,
wherein each separation segment comprises a ferromagnetic material and the closed ring is formed as a closed magnetic toroidal core,
wherein the core assembly has an inner opening enclosed by the closed ring and enclosed at least partially by the separation unit,
wherein each winding block of the winding blocks extends through the inner opening and surrounds the closed ring and a corresponding separation segment, and
wherein each winding of the winding blocks encloses all closed rings and all separation units of the stacking unit.