CN215377167U - Coil structure of phase-shifting rectifier transformer - Google Patents
Coil structure of phase-shifting rectifier transformer Download PDFInfo
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- CN215377167U CN215377167U CN202121531999.4U CN202121531999U CN215377167U CN 215377167 U CN215377167 U CN 215377167U CN 202121531999 U CN202121531999 U CN 202121531999U CN 215377167 U CN215377167 U CN 215377167U
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Abstract
The utility model discloses a coil structure of a phase-shifting rectifier transformer, which is characterized in that: the single-phase winding single-cake phase-shifting winding comprises a first single cake and a second single cake, wherein 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; and the conducting wire of the first single cake and the conducting wire of the second single cake are wound twice in a crossed mode, and the crossed point of the two crossed winding modes is positioned at half of the number of turns of the phase-shifting winding of the first single cake and the second single cake and half of the number of turns of the basic winding. The utility model has simple structure and convenient winding, 2 single cakes have consistent length and the same position in a magnetic field, and the problem of uneven load is avoided. The method is expanded into 3 or 4 single cakes in one group, and the single cakes can be executed according to the method, so that the problem of unbalanced impedance in the same group of the dry-type rectifier transformer for variable frequency speed regulation is effectively solved.
Description
Technical Field
The utility model relates to a coil structure of a phase-shifting rectifier transformer.
Background
Under the condition of large transformer capacity, each small group of low-voltage coils of the conventional phase-shifting rectifier transformer can be wound into 2 single-cakes, namely 2 single-cake structures, as shown in fig. 1. The 2 single-pancake turns are identical, and the same group is formed by connecting 2 independent wire cakes in parallel, as shown in fig. 2, so that the design of a large-capacity transformer can be realized.
Although the coil structure of the high-capacity transformer realized by the scheme has the design, the problem exists that although the sizes, the turns and the lengths of the 2 single-cake wires are all consistent, the impedance of the 2 small groups is different because the positions of the magnetic fields in the axial height are different, and the load is not uniform when the two groups are operated in parallel.
Disclosure of Invention
The technical problem to be solved by the utility model is as follows: the problem of different load currents caused by unbalanced impedance in 2 single-cake groups of the dry-type rectifier transformer for variable frequency speed regulation is solved.
In order to solve the above problems, the technical solution of the present invention is to provide a coil structure of a phase-shifting rectifier transformer, which is characterized in that: the single-phase winding single-cake phase-shifting winding comprises a first single cake and a second single cake, wherein 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; and the conducting wire of the first single cake and the conducting wire of the second single cake are wound twice in a crossed mode, and the crossed point of the two crossed winding modes is positioned at half of the number of turns of the phase-shifting winding of the first single cake and the second single cake and half of the number of turns of the basic winding.
Preferably, the wire of the first single cake and the wire of the second single cake are identical in size, number of turns and length.
The utility model also provides a coil structure of the phase-shifting rectifier transformer, which is characterized in that: the phase-shifting winding comprises a first single cake, a second single cake and a third single cake, wherein a lead of the first single cake and a lead of the third single cake are crossed and wound twice, and a cross point of the two crossed and wound times is positioned at half of the number of turns of a phase-shifting winding of the first single cake and the third single cake and half of the number of turns of a basic winding.
The utility model also provides a coil structure of the phase-shifting rectifier transformer, which is characterized in that: the phase-shifting winding comprises a first single cake, a second single cake, a third single cake and a fourth single cake, wherein a lead of the first single cake is crossed with a lead of the second single cake for twice winding, and a cross point of the twice crossed winding is positioned at half of the number of turns of a phase-shifting winding of the first single cake and the second single cake and half of the number of turns of a basic winding; and the conducting wire of the third single cake and the conducting wire of the fourth single cake are wound twice in a crossed mode, and the crossed point of the two crossed winding modes is positioned at half of the number of turns of the phase-shifting winding of the third single cake and the fourth single cake and half of the number of turns of the basic winding.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model has simple structure and convenient winding, 2 single cakes have consistent length and the same position in a magnetic field, and the problem of uneven load is avoided. The method is expanded into 3 or 4 single cakes in one group, and the single cakes can be executed according to the method, so that the problem of unbalanced impedance in the same group of the dry-type rectifier transformer for variable frequency speed regulation is effectively solved.
Drawings
FIG. 1 is a schematic structural diagram of a conventional phase-shifting rectifier transformer with a coil structure of 2 single-pancake coils;
FIG. 2 is a schematic diagram of a small group of phase-shifting rectifier transformers;
FIG. 3 is a schematic structural diagram of a phase-shifting rectifier transformer according to the present invention, in which the number of windings is 2;
FIG. 4 is a schematic structural diagram of a 3-single-pancake phase-shifting rectifier transformer according to the present invention, in which the number of coils is 3;
FIG. 5 is a schematic structural diagram of a 4-single-pancake phase-shifting rectifier transformer according to the present invention, in which the number of coils is 4.
Detailed Description
In order to make the utility model more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
Example one
As shown in fig. 3, the coil structure of the phase-shifting rectifier transformer in this embodiment is 2 single-pancake structures, which are respectively a first single-pancake 1 and a second single-pancake 2, and the size, the number of turns, and the length of the wire of the first single-pancake 1 are the same as those of the wire of the second single-pancake 2. The first single cake 1 comprises a basic winding and a phase-shift winding, and the second single cake 2 comprises a basic winding and a phase-shift winding. And the conducting wire of the first single cake 1 and the conducting wire of the second single cake 2 are wound twice in a crossed mode, and the crossed point of the two crossed windings is positioned at half of the number of turns of the phase-shifting winding of the first single cake 1 and the second single cake 2 and at half of the number of turns of the basic winding.
When the two single cakes are wound, when the first single cake 1 and the second single cake 2 are wound to half of the turn number of the phase-shifting winding, the cross transposition is carried out, when the first single cake 1 and the second single cake 2 are continuously wound to half of the turn number of the basic winding, the cross transposition is carried out again until the winding is finished. Therefore, the lengths are consistent, the positions of 2 single cakes in the magnetic field are the same, and the problem of uneven load is solved.
Example two
As shown in fig. 4, the coil structure of the phase-shifting rectifier transformer in this embodiment is a 3-single-cake structure, including a first single cake 1, a second single cake 2, and a third single cake 3, the size, the number of turns, and the length of the wires of the three single cakes are the same, and each single cake has a phase-shifting winding + a basic winding inside. And the conducting wire of the first single cake 1 and the conducting wire of the third single cake 3 are wound twice in a crossed mode, and the crossed point of the two crossed windings is positioned at half of the number of turns of the phase-shifting winding of the first single cake 1 and the third single cake 3 and at half of the number of turns of the basic winding.
When the three single cakes are wound, when the first single cake 1 and the third single cake 3 are wound to half of the turn number of the phase-shifting winding, the cross transposition is carried out, when the first single cake 1 and the third single cake 3 are continuously wound to half of the turn number of the basic winding, the cross transposition is carried out again until the winding is finished.
EXAMPLE III
As shown in fig. 4, the coil structure of the phase-shifting rectifier transformer in this embodiment is 4 single-pancake structures, including a first single-pancake 1, a second single-pancake 2, a third single-pancake 3, and a fourth single-pancake 4, where the sizes, the turns, and the lengths of the wires of the four single-cakes are the same, and each single-pancake has a phase-shifting winding + a basic winding inside. The conducting wire of the first single cake 1 and the conducting wire of the second single cake 2 are wound twice in a crossed mode, and the crossed point of the two crossed windings is located at the crossed point of the two crossed windings of the first single cake 1 and the second single cake 2 and is located at half of the number of turns of the phase-shifting winding of the first single cake 1 and the second single cake 2 and half of the number of turns of the basic winding. And the conducting wire of the third single cake 3 and the conducting wire of the fourth single cake 4 are wound twice in a crossed mode, and the crossed point of the two crossed windings is positioned at the crossed point of the two crossed windings of the third single cake 3 and the fourth single cake 4 and is positioned at half of the number of turns of the phase-shifting winding of the third single cake 3 and the fourth single cake 4 and half of the number of turns of the basic winding. When the four single cakes are wound, when the first single cake 1 and the second single cake 2 are wound to half of the turn number of the phase-shifting winding, the cross transposition is carried out, when the winding is continued to be wound to half of the turn number of the basic winding of the first single cake 1 and the second single cake 2, the cross transposition is carried out again until the winding is finished. And when the third single cake 3 and the fourth single cake 4 are wound to half of the number of turns of the phase-shifting winding, performing cross transposition, and when the third single cake 3 and the fourth single cake 4 are continuously wound to half of the number of turns of the basic winding, performing cross transposition again until the winding is finished.
Claims (4)
1. A coil structure of a phase-shifting rectifier transformer is characterized in that: the single-phase-locked loop comprises a first single cake (1) and a second single cake (2), wherein the first single cake (1) comprises a basic winding and a phase-shifting winding, and the second single cake (2) comprises a basic winding and a phase-shifting winding; and the conducting wire of the first single cake (1) and the conducting wire of the second single cake (2) are wound twice in a crossed manner, and the crossed point of the two crossed windings is positioned at half of the number of turns of the phase-shifting winding of the first single cake (1) and the second single cake (2) and half of the number of turns of the basic winding.
2. The coil structure of a phase-shifting rectifier transformer according to claim 1, wherein: the size, the number of turns and the length of the conducting wire of the first single cake (1) are consistent with those of the conducting wire of the second single cake (2).
3. A coil structure of a phase-shifting rectifier transformer is characterized in that: the phase-shifting winding comprises a first single cake (1), a second single cake (2) and a third single cake (3), wherein a lead of the first single cake (1) and a lead of the third single cake (3) are wound twice in a crossed mode, and a cross point of the twice wound cross points is located in half of the number of turns of a phase-shifting winding of the first single cake (1) and the third single cake (3) and half of the number of turns of a basic winding.
4. A coil structure of a phase-shifting rectifier transformer is characterized in that: the phase-shifting winding comprises a first single cake (1), a second single cake (2), a third single cake (3) and a fourth single cake (4), wherein a lead of the first single cake (1) and a lead of the second single cake (2) are wound twice in a crossed manner, and a cross point of the twice crossed winding is positioned in half of the number of turns of a phase-shifting winding of the first single cake (1) and the second single cake (2) and in half of the number of turns of a basic winding; and the conducting wire of the third single cake (3) and the conducting wire of the fourth single cake (4) are wound twice in a crossed manner, and the crossed point of the two crossed windings is positioned at half of the number of turns of the phase-shifting winding of the third single cake (3) and the fourth single cake (4) and half of the number of turns of the basic winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121531999.4U CN215377167U (en) | 2021-07-06 | 2021-07-06 | Coil structure of phase-shifting rectifier transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121531999.4U CN215377167U (en) | 2021-07-06 | 2021-07-06 | Coil structure of phase-shifting rectifier transformer |
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| Publication Number | Publication Date |
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| CN215377167U true CN215377167U (en) | 2021-12-31 |
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| CN202121531999.4U Active CN215377167U (en) | 2021-07-06 | 2021-07-06 | Coil structure of phase-shifting rectifier transformer |
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| CN (1) | CN215377167U (en) |
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- 2021-07-06 CN CN202121531999.4U patent/CN215377167U/en active Active
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