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Coil structure of phase-shifting rectifier transformer and winding method of coil

A rectifier transformer and winding method technology, applied in the direction of transformer/inductor coil/winding/connection, transformer/inductor components, coil manufacturing, etc., can solve problems such as different load currents

Pending Publication Date: 2021-09-14
BEIBIAN TRANSFORMER SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the problem of different load currents caused by impedance imbalance in two single-cake groups of dry-type rectifier transformers for frequency conversion and speed regulation

Method used

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  • Coil structure of phase-shifting rectifier transformer and winding method of coil
  • Coil structure of phase-shifting rectifier transformer and winding method of coil
  • Coil structure of phase-shifting rectifier transformer and winding method of coil

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Embodiment 1

[0021] Such as image 3 As shown, the coil structure of the phase-shifting rectifier transformer in this embodiment is two single pie structures, which are respectively the first single pie 1 and the second single pie 2, and the wires of the first single pie 1 and the second single pie 2 The size, number of turns and length are the same. The first single pie 1 includes a basic winding and a phase-shift winding, and the second single pie 2 includes a basic winding and a phase-shift winding. The wires of the first single pie 1 and the second single pie 2 are crossed and wound twice, and the intersection point of the two cross windings is located at the half of the number of turns of the phase shifting winding of the first single pie 1 and the second single pie 2 and basically half of the number of turns in the winding.

[0022] When two single pies are wound, when the first single pie 1 and the second single pie 2 are wound to half of the number of turns of the phase-shifting ...

Embodiment 2

[0024] Such as Figure 4 As shown, the coil structure of the phase-shifting rectifier transformer in this embodiment is three single pie structures, including the first single pie 1, the second single pie 2 and the third single pie 3, the wire size and the number of turns of the three single pies , The length is the same, and each single cake has a phase-shifting winding + a basic winding. The wire of the first single pie 1 and the wire of the third single pie 3 are crossed and wound twice, and the intersection point of the two cross windings is located at the half of the number of turns of the phase-shifting winding of the first single pie 1 and the third single pie 3 and basically half of the number of turns in the winding.

[0025] When three single pies are wound, when the first single pie 1 and the third single pie 3 are wound to half the number of turns of the phase-shifting winding, perform cross transposition and continue winding to the first single pie 1 and the thir...

Embodiment 3

[0027] Such as Figure 4 As shown, the coil structure of the phase-shifting rectifier transformer in this embodiment is four single pie structures, including the first single pie 1, the second single pie 2, the third single pie 3 and the fourth single pie 4, and the four single pies The size, number of turns, and length of the wires are the same, and there are phase-shifting windings + basic windings in each single cake. The conductor of the first single cake 1 and the conductor of the second single cake 2 are crossed and wound twice, and the intersection of the two cross windings is located at the intersection of the first single cake 1 and the intersection of the two cross windings is located between the first single cake 1 and the first single cake 1. The second single pie 2 has half the number of turns of the phase-shifting winding and half the number of turns of the basic winding. The wire of the third single cake 3 crosses the wire of the fourth single cake 4 and is wou...

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Abstract

The invention discloses a coil structure of a phase-shifting rectifier transformer and a coil winding method, and the coil structure is characterized in that the coil structure comprises a first single cake and a second single cake, the first single cake comprises a basic winding and a phase-shifting winding, and the second single cake comprises a basic winding and a phase-shifting winding; the wire of the first single cake and the wire of the second single cake are wound twice in a crossed manner, and the crossed point of the twice crossed winding is located on a half of the number of turns of the phase-shifting windings of the first single cake and the second single cake and a half of the number of turns of the basic windings. The coil structure is simple and convenient to wind, the lengths of the two single cakes are consistent, the positions of the two single cakes in a magnetic field are also the same, and the problem of uneven load is avoided. And three or four single cakes are expanded in one group and can be executed according to the mode, so that the problem of unbalanced impedance in the same group of the dry-type rectifier transformer for frequency conversion and speed regulation is effectively solved.

Description

technical field [0001] The invention relates to a coil structure of a phase-shifting rectifier transformer and a coil winding method. Background technique [0002] In the case of a conventional phase-shifting rectifier transformer with a large transformer capacity, each group of low-voltage coils will be wound into two single cakes, that is, two single cake structures, such as figure 1 shown. The number of turns of these two single pies is exactly the same, and the same group is composed of two separate wire pies connected in parallel, such as figure 2 As shown, the design of large-capacity transformers can be realized in this way. [0003] Although the above scheme realizes the design of the large-capacity transformer coil structure, there is a problem. Although the size, number of turns, and length of the wires of the two single cakes are the same, the magnetic field positions in the axial height are different. Therefore, the impedance of these two groups is different,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/28H01F27/34H01F41/06
CPCH01F27/28H01F27/2823H01F27/34H01F41/06
Inventor 武加春施瑶杰
Owner BEIBIAN TRANSFORMER SHANGHAI