Patent ID: 9633777
Date: 2017-04-25
CPC Classifications: H01F

Claim:
1. An air core reactor comprising a coil connected between a first terminal and a second terminal, the coil being made of at least two bundles of conductor connected in series along an axis between the first terminal and the second terminal, each bundle of conductor being made of a wire wound around said axis so as to form a multi-layer winding having a cross-section made of N winding layers in a direction perpendicular to the axis, from a winding layer of rank 1 which is the closest to the axis to a winding layer of rank N which is the furthest from the axis, for each bundle of conductor, each winding layer in the direction perpendicular to the axis comprising several windings in the direction of the axis, the number of windings in the direction of the axis of the winding layer of rank j in the direction perpendicular to the axis, j being taken between 2 to N, being equal or less than the number of windings in the direction of the axis of the winding layer of rank j−1 in the direction perpendicular to the axis, wherein all the bundles of conductor are made with a same wire in such a way that the air core reactor comprises only one wire, and wherein, for all the bundles of conductor of the air core reactor, the link between adjoining bundles of conductor being made by said same wire passing from the winding layer of rank N of a bundle of conductor to the winding layer of rank