US 12,390,852 B2
Method and apparatus for production of a multiphase electromagnetic mat for forming current carrying components of a power conversion system
Oddvin Agnalt Østmo, Trondheim (NO); Halvard Berge, Trondheim (NO); and Jørgen Selnes, Trondheim (NO)
Assigned to Alva Industries AS, Trondheim (NO)
Appl. No. 17/922,512
Filed by ALVA Industries AS, Trondheim (NO)
PCT Filed May 7, 2021, PCT No. PCT/NO2021/050117
§ 371(c)(1), (2) Date Oct. 31, 2022,
PCT Pub. No. WO2021/225453, PCT Pub. Date Nov. 11, 2021.
Claims priority of application No. 20200543 (NO), filed on May 8, 2020.
Prior Publication US 2023/0166320 A1, Jun. 1, 2023
Int. Cl. H01F 7/06 (2006.01); B21F 27/02 (2006.01); H01F 41/064 (2016.01)
CPC B21F 27/02 (2013.01) [H01F 41/064 (2016.01)] 20 Claims
OG exemplary drawing
 
1. A method for production of a multiphase electromagnetic mat for forming current carrying components of a power conversion system, the electromagnetic mat having structural fiber lengths and a plurality of winding fiber lengths, wherein the winding fiber lengths form a winding fiber that is in a winding pattern for forming one or more windings of the power conversion system, and the winding fiber lengths are divided into several groups, comprising:
dividing the structural fiber lengths into at least a first group and a second group;
dividing the winding fiber lengths into the several groups corresponding to a number of phases and a number of parallel branches of each phase; and
winding the winding fiber lengths on a number of storages accommodated in at least two movable magazines, at least one movable magazine of the at least two movable magazines being located at respective opposite sides of the electromagnetic mat being produced along a plane defined by the electromagnetic mat, wherein the winding further comprising:
moving the first group of the structural fiber lengths in a first direction substantially perpendicular to the plane defined by the electromagnetic mat being produced;
moving the second group of the structural fiber lengths in a second direction opposite from the first direction, to have the structural fiber lengths of the first and the second groups at a predetermined angle to the plane defined by the electromagnetic mat being produced;
inserting a selected number of winding fiber lengths into an opening formed between the structural fiber lengths of the first group and the second group so that the winding fiber lengths inserted extend across the structural fiber lengths; and
retaining the winding fiber lengths in a position by moving the first group and the second group of the structural fiber lengths so that the first and the second groups swap positions at least once, or by using at least one additional other group of the structural fiber lengths in a comparable manner, thereby forming various patterns of structural fiber lengths and winding fiber lengths overlaps.