CN208444720U - A kind of high frequency transformer - Google Patents
A kind of high frequency transformer Download PDFInfo
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- CN208444720U CN208444720U CN201820818828.1U CN201820818828U CN208444720U CN 208444720 U CN208444720 U CN 208444720U CN 201820818828 U CN201820818828 U CN 201820818828U CN 208444720 U CN208444720 U CN 208444720U
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- side winding
- iron core
- high frequency
- primary side
- frequency transformer
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- 238000004804 winding Methods 0.000 claims abstract description 87
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 64
- 239000000463 material Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000011889 copper foil Substances 0.000 claims description 4
- 230000009466 transformation Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Coils Of Transformers For General Uses (AREA)
Abstract
The utility model embodiment provides a kind of high frequency transformer, the high frequency transformer includes: iron core, primary side winding and vice-side winding, iron core is the equilateral structure of triangle of integral type, primary side winding and vice-side winding are uniformly around on three sides of iron core, and primary side winding three-phase magnetic circuit is symmetrical, the fundametal compoment for avoiding high frequency transformer primary side be transmitted to secondary side and caused by loss, and due to only with a transformer, so that the loss of high frequency transformer is small, wiring is simple and small in size.
Description
Technical field
The utility model relates to transformer technology fields, and in particular to a kind of high frequency transformer.
Background technique
High frequency transformer is the core equipment that alternating current-direct current mixing power distribution network realizes AC/AC, DC/DC power conversion, plays height
The key effects such as electrical isolation, voltage transformation, power transmission between low-pressure system.
When the input terminal magnetic circuit asymmetry of three-phase high frequency transformer, the fundametal compoment of primary side can not be offset, and can be transmitted to
Secondary side, and then increase the loss of high frequency transformer.
Existing high frequency transformer is generally phase structure, and iron core mainly uses rectangle or c-type iron core to be spliced, can not
Three-phase transformer is realized on single iron core.If realizing three-phase structure, three-phase input need to be realized using three single-phase transformers,
Tri-phase iron core is mutually indepedent, and it is symmetrical to can be realized three-phase high frequency transformer primary side three-phase magnetic circuit, however due to needing to use three
Single-phase transformer causes three-phase high frequency transformer wiring complicated, and loss is big, and volume is big.
Utility model content
In view of above-mentioned analysis, the utility model embodiment proposes a kind of high frequency transformer, to solve existing three
The transformer loss that phase high frequency transformer uses is big, iron core quantity is more, wiring is complicated and bulky problem.
To achieve the above objectives, the present invention adopts the following technical solutions:
For the utility model in a first aspect, providing a kind of high frequency transformer, which includes: iron core, primary side winding
And vice-side winding；The iron core is the equilateral structure of triangle of integral type；The primary side winding and vice-side winding are uniformly around being set to
On three sides of the iron core, and primary side winding three-phase magnetic circuit is symmetrical.
With reference to first aspect, in first aspect first embodiment, the vice-side winding and the primary side winding are concentric
It is set around on the iron core, the primary side winding is set to the outside of the vice-side winding.
With reference to first aspect, in first aspect second embodiment, three angles of the iron core are arc-shaped structure.
First embodiment with reference to first aspect is set around the three of the iron core in first aspect third embodiment
The primary side winding on side is respectively used to three-phase input；The vice-side winding being set around on three sides of the iron core is
Serial or parallel connection structure is used for single-phase output.
With reference to first aspect, first aspect first embodiment, first aspect second embodiment or first aspect third
Embodiment, in the 4th embodiment of first aspect, the iron core includes: at least one second iron core.
4th embodiment with reference to first aspect, in the 5th embodiment of first aspect, when the iron core includes two
When the second iron core described above, closed assembly between each second iron core.
First embodiment, first aspect second embodiment or first aspect third embodiment with reference to first aspect,
In first aspect sixth embodiment, the material of the primary side winding and vice-side winding is copper foil or litz wire.
Technical solutions of the utility model at least have the advantages that compared with prior art
The utility model embodiment provides a kind of high frequency transformer, the high frequency transformer include: iron core, primary side winding and
Vice-side winding, iron core are the equilateral structure of triangle of integral type, and primary side winding and vice-side winding are uniformly around being set to three of iron core
Bian Shang, and primary side winding three-phase magnetic circuit is symmetrical, the fundametal compoment for avoiding high frequency transformer primary side be transmitted to secondary side and caused by
Loss, and due to only with a transformer, so that the loss of high frequency transformer is small, wiring is simple and small in size.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of a specific example of the utility model embodiment medium/high frequency transformer；
Fig. 2 is the structural schematic diagram of another specific example of the utility model embodiment medium/high frequency transformer；
Fig. 3 is the side view of a specific example of the utility model embodiment medium/high frequency transformer；
Fig. 4 A is that one of three phase transformation single-phase high frequency transformer secondaries series connection output in the utility model embodiment specifically shows
The structural schematic diagram of example；
Fig. 4 B is that one of three phase transformation single-phase high frequency transformer secondary parallel outputs in the utility model embodiment specifically shows
The structural schematic diagram of example.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
As long as it should be noted that technical characteristic involved in the utility model different embodiments disclosed below
Not constituting a conflict with each other can be combined with each other.
The utility model embodiment provides a kind of high frequency transformer, as shown in Figure 1, the high frequency transformer includes: iron core
7, primary side winding 1, primary side winding 3, primary side winding 5, vice-side winding 2, vice-side winding 4 and vice-side winding 6；Iron core 7 is integral type
The equilateral structure of triangle；Primary side winding 1, primary side winding 3, primary side winding 5, vice-side winding 2, vice-side winding 4 and vice-side winding 6
Uniformly around being set on three sides of iron core 7, and primary side winding 1, primary side winding 3,5 three-phase magnetic circuit of primary side winding are symmetrical.
I.e. to realize primary side three-phase defeated only with a transformer for high frequency transformer provided by the embodiment of the utility model
It is symmetrical to enter magnetic circuit, three-phase shares a stem, and fluctuating power can flow between high frequency transformer primary side three-phase, and primary side three-phase is complete
Unity couping, fundametal compoment are completely counterbalanced by, and are avoided and are passed to the loss that secondary side causes high frequency transformer, wiring is simple, and small in size.
Meanwhile the iron core of high frequency transformer provided by the embodiment of the utility model uses integral structure, avoids use
Splice the air gap that iron core generates, reduces the leakage inductance and core loss of high frequency transformer, reduce the hot spot temperature of high frequency transformer
Degree, improves the operational efficiency and service life of high frequency transformer.
As shown in Figure 1, above-mentioned vice-side winding 2, vice-side winding 4, vice-side winding 6 respectively with above-mentioned primary side winding 1, primary side around
Group 3, primary side winding 5 be set around on iron core 7 with one heart, primary side winding 1, primary side winding 3, primary side winding 5 be respectively arranged at secondary side around
The outside of group 2, vice-side winding 4, vice-side winding 6.Primary side winding 1, primary side winding 3, primary side winding 5 respectively with vice-side winding 2, secondary
Side winding 4, the concentric winding of vice-side winding 6, increase the coefficient of coup between former vice-side winding, effectively reduce high frequency transformer
Leakage reactance between former pair side.Due to u=Ldi/dt, high frequency transformer provided by the embodiment of the utility model is accessed into current transformer,
Because the leakage reactance L between former pair side is reduced, it can reduce voltage spikes excessively high under access circuit medium-high frequency.
As depicted in figs. 1 and 2, three angles of above-mentioned iron core 7 are arc-shaped structure, on the one hand avoid 60 degree of angle needs
On the other hand the assembly used prevents iron core from embrittlement occurs；In addition, the straight length L on three side of iron core, core interior triangle circle
Angular radius R2, iron core external triangular radius of corner R1 need to be according between three windings of width and primary side of former vice-side winding
Insulating requirements etc. are comprehensive to be determined.
Reference data when as fabrication of iron core, as shown in Fig. 2, φ 1 is the straight of circle 8 where three-legged structure outside iron core
Diameter, φ 2 are the diameter of circle 9 where core interior three-legged structure.
As shown in figure 3, above-mentioned iron core 7 includes: at least one second iron core, when iron core includes more than two second iron cores
When, the strip width of each second iron core is h, and closed assembly between each second iron core avoids the air gap of iron core assembly generation, can
The leakage magnetic flux of high frequency transformer iron core is reduced, core loss is reduced.The determination of the overall height H of iron core need to comprehensively consider flux density, iron
The factors such as core loss, transformer temperature rise.
Optionally, in some embodiments of the utility model, above-mentioned iron core 7 be can be iron core band by iron core winder
Material rolls, and by annealing, iron core band can select different materials according to the difference of working frequency, such as can be with
It is ferrite, amorphous alloy, ultra-thin silicon steel or the magnetic materials such as nanocrystalline.
Optionally, in some embodiments of the utility model, as shown in Figure 4 A and 4 B shown in FIG., three of iron core 7 are set around
Primary side winding 1, primary side winding 3, primary side winding 5 on side can be respectively used to three-phase input, and every phase input includes that two terminals are (former
1 corresponding two terminal of side winding be A and X, 3 corresponding two terminals of primary side winding be B and Y, primary side winding 5 corresponding two
Terminal is C and Z)；As shown in Figure 4 A and 4 B shown in FIG., vice-side winding 2 (a1-x1), the vice-side winding being set around on three sides of iron core 7
4 (a2-x2), vice-side winding 6 (a3-x3) can be serial or parallel connection structure, draw two terminals (two ends drawn when series connection
Son is respectively a and z, and two terminals drawn when in parallel are respectively a and x), realizes single-phase output.For high frequency square wave, three-phase phase
Position is consistent, senses the single-phase square wave of low-pressure side same-phase, realizes three-phase to single-phase transformation.Using the utility model embodiment
The high frequency transformer of offer simplifies wiring, while reducing required high frequency transformer during realizing that three phase transformations are single-phase
Quantity.
In a preferred embodiment, be the kelvin effect reduced under high frequency operating condition, using copper foil as above-mentioned primary side winding and
The material of vice-side winding, the material using copper foil as winding winding, reduces the difficulty of winding technique.
Optionally, in the other embodiments of the utility model, above-mentioned primary side winding and vice-side winding are also possible to Ritz
Line.
Optionally, it in some embodiments of the utility model, can be real using insulating paper, insulating oil or epoxy resin
Electrical isolation between existing former secondary side.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes among the protection scope created still in the utility model.
Claims (7)
1. a kind of high frequency transformer characterized by comprising iron core, primary side winding and vice-side winding；
The iron core is the equilateral structure of triangle of integral type；
The primary side winding and vice-side winding are uniformly around being set on three sides of the iron core, and primary side winding three-phase magnetic circuit pair
Claim.
2. high frequency transformer according to claim 1, which is characterized in that the vice-side winding and the primary side winding are concentric
It is set around on the iron core, the primary side winding is set to the outside of the vice-side winding.
3. high frequency transformer according to claim 1, which is characterized in that three angles of the iron core are arc-shaped knot
Structure.
4. high frequency transformer according to claim 2, which is characterized in that be set around described on three sides of the iron core
Primary side winding is respectively used to three-phase input；The vice-side winding being set around on three sides of the iron core is serial or parallel connection knot
Structure is used for single-phase output.
5. high frequency transformer according to claim 1-4, which is characterized in that the iron core includes: at least one
Second iron core.
6. high frequency transformer according to claim 5, which is characterized in that when the iron core includes two or more described second
When iron core, closed assembly between each second iron core.
7. according to the described in any item high frequency transformers of claim 2-4, which is characterized in that the primary side winding and vice-side winding
Material be copper foil or litz wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820818828.1U CN208444720U (en) | 2018-05-30 | 2018-05-30 | A kind of high frequency transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820818828.1U CN208444720U (en) | 2018-05-30 | 2018-05-30 | A kind of high frequency transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208444720U true CN208444720U (en) | 2019-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820818828.1U Active CN208444720U (en) | 2018-05-30 | 2018-05-30 | A kind of high frequency transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN208444720U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108962561A (en) * | 2018-05-30 | 2018-12-07 | 全球能源互联网研究院有限公司 | A kind of high frequency transformer |
-
2018
- 2018-05-30 CN CN201820818828.1U patent/CN208444720U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108962561A (en) * | 2018-05-30 | 2018-12-07 | 全球能源互联网研究院有限公司 | A kind of high frequency transformer |
| CN108962561B (en) * | 2018-05-30 | 2020-05-29 | 全球能源互联网研究院有限公司 | High-frequency transformer |
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Address after: 102209 18 Riverside Avenue, Changping District science and Technology City, Beijing Co-patentee after: State Grid Corporation of China Patentee after: Global energy Internet Institute, Inc. Co-patentee after: State Grid Shanghai Municipal Electric Power Company Address before: 102209 18 Riverside Avenue, Changping District science and Technology City, Beijing Co-patentee before: State Grid Corporation of China Patentee before: Global energy Internet Institute, Inc. Co-patentee before: State Grid Shanghai Municipal Electric Power Company |