RU2641312C1 - Multi-layer cylindrical winding - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: multilayer cylindrical winding contains m series-connected layers, each of which represents one turn located in the radial direction in such a way that the first layer is closest of the layers to the axis of winding, and m-th layer is the furthest from the axis. Two additional turns of p parallel wires are connected top wires of the m-th layer. Each of them is placed on the corresponding end face in the radial direction as follows: the first and n-th wires are located in the first layer closest to the axis of the winding at its respective ends. The second and (n-1)-th wires are placed on their respective end faces of the second, following the first layer, layer, the third and (n-2)-th wires are placed in the third from the axis layer of winding, etc. so that the p-th and (n-p+1) wires are placed in p-th layer at the respective end faces of where n is any integer greater than two; m is any valid integer greater than one; p is integer chosen from the ratio of 1<p<n.

EFFECT: alignment of the axial component of the scattering magnetic field.

1 dwg

Description

The invention relates to electrical engineering, in particular to transformer construction, and may find application in the manufacture of transformer and reactor windings.

A multilayer cylindrical winding of a transformer (reactor) is known, containing m series-connected layers, each of which is one turn, arranged in series in the radial direction so that the first layer is located closer to other layers to the axis of the winding, and the m-th layer is farthest from axis, with each layer made of n parallel wires arranged sequentially in the axial direction so that the first wire is placed at one end of the winding, and the nth wire is at its other end [L. one].

Described in [L. 1] a multilayer cylindrical winding is characterized by uneven division of current along parallel wires located in the axial direction, due to the different magnitude of the emf of the turns of wires located along the height of the winding, depending on the configuration of the scattering magnetic field, due to the fact that the axial magnetic field deviates from the axial at the ends of the winding directions, as the so-called "edge effect" takes place.

The invention solves the problem of creating a multilayer cylindrical winding, devoid of the disadvantages noted above and characterized by the ability to align the axial component of the scattering magnetic field, i.e. providing the ability to align the axial component of the scattering magnetic field along the entire height of the winding both at its ends and in the middle part along its height.

To solve the problem in a multilayer cylindrical winding, containing m series-connected layers, each of which is one turn, located in the radial direction so that the first layer is located closer than the other layers to the axis of the winding, and the m-th layer is farthest from the axis wherein each layer is made of n parallel wires arranged sequentially in the axial direction so that the first wire is placed at one end of the winding and the nth wire is at its other end, it is proposed, according to to the present invention, introduce two additional turns of p parallel wires connected to p wires of the mth layer, with each of the additional turns placed on the corresponding end in the radial direction as follows: place the first and nth wires in the first, closest to to the axis of the winding, the layer, at its respective ends, to place the second and (n-1) -th wires on the respective ends in the second, next to the first layer, layer, the third and (n-2) -th wires to be placed in the third from the axis of the winding layer, etc. so that the pth and (n-p + 1) wires are placed in the pth layer at the corresponding ends,

where n is any integer greater than two;

m is any integer greater than one;

p is an integer selected from the relation 1 <p <n.

The invention is illustrated in the drawing (Fig. 1), which schematically depicts the inventive multilayer cylindrical winding of the reactor, its circuit diagram.

A multilayer cylindrical winding contains m series-connected layers, each of which is one turn, indicated in the drawing by Roman numerals, respectively: I, II, III, ..., (m-I), m. The winding layers forming the coils are located in the radial direction so that the first layer I is located closer than the other layers to the axis of the winding, the second layer II is located next to the first layer I as it moves away from the axis of the winding, the third layer III is located next to the second layer II as you move away from the axis of the winding, etc. the most distant layer from the axis of the winding is layer m, next to which, closer to the axis of the winding, is layer m-I.

Each layer is made of parallel wires 1, 2, 3, ..., etc., n-1, n, placed in the axial direction so that the wire 1 is located at one end of the winding, followed by the wire 2 in the axial direction, wire 3 is followed by wire 3, etc., and wire n is located at the other end of the winding, next to it in the axial direction is wire n-1, etc.

The winding also contains two additional turns w _d made of wires 1, 2, ..., p, which are a continuation of the extreme wires of the last m-th layer, each of which is placed at the end of the winding closest to this turn in the radial direction. In particular, in the embodiment shown in the drawing, the number of additional parallel wires p is two. They are connected to wires 1, 2, ... n, forming layers I, II, III, ... m, and are located respectively: wires 1, 2 at the end on which wires 1 are located, forming n parallel wires, and wires ... are placed on the end on which the wires are located ..., forming n parallel wires. In this case, the first wire 1 and the nth wire are placed in the first layer, the second wire is also located in the first layer.

Due to the arrangement of wires described above in a multilayer cylindrical winding, the axial scattering field is aligned over the entire height of the winding, the emf of the parallel connected turns is aligned, and, therefore, the currents in the parallel connected wires are aligned.

In accordance with the claimed decision, the technical documentation of the transformer winding was developed, which will be manufactured at one of the enterprises in Yekaterinburg.

Literature

1. Tikhomirov P.M. “Calculation of transformers”, “Energy”, Moscow, 1976, p. 239.

Claims (4)

A multilayer cylindrical winding containing m series-connected layers, each of which is one turn, located in the radial direction so that the first layer is located closer than the other layers to the axis of the winding, and the mth layer is farthest from the axis, with each layer made of n parallel wires arranged sequentially in the axial direction so that the first wire is placed at one end of the winding, and the nth wire is at its other end, characterized in that it contains two additional a fabric of p parallel wires connected to p wires of the mth layer, with each of the additional turns placed at the corresponding end in the radial direction so that the first and nth wires are placed in the first layer closest to the axis of the winding, on its respective ends, the second and (n-1) -th wires are placed on the respective ends in the second, next to the first layer, layer, the third and (n-2) -th wires are located in the third layer from the winding axis, etc. . so that the rth and (n-p + 1) wires are located in the pth layer at the corresponding ends, where n is any integer greater than two; m is any integer greater than one; p is an integer selected from the relation 1 <p <n.

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