CN215451143U - Three-phase LLC high-frequency transformer with three-phase LLC resonant inductor - Google Patents
Three-phase LLC high-frequency transformer with three-phase LLC resonant inductor Download PDFInfo
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- CN215451143U CN215451143U CN202121329526.6U CN202121329526U CN215451143U CN 215451143 U CN215451143 U CN 215451143U CN 202121329526 U CN202121329526 U CN 202121329526U CN 215451143 U CN215451143 U CN 215451143U
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Abstract
The utility model provides a three-phase LLC high-frequency transformer with a three-phase LLC resonant inductor, wherein the three-phase LLC high-frequency transformer with the three-phase LLC resonant inductor integrates an excitation inductor, an inductor winding is formed by conjugating with a primary winding and a secondary winding, so that a magnetic material of the three-phase LLC high-frequency transformer with the three-phase LLC resonant inductor can select a larger B value, the inductor winding can take a smaller B value, and the effect of dispersing an air gap is achieved by adjusting the distance between a first winding and a first mounting column, the distance between a second winding and a second mounting column and the distance between a third winding and the second mounting column, so that the overall scattered magnetic flux is smaller, the smaller coil eddy current loss is obtained, and the overall power transmission efficiency and the power density are improved.
Description
Technical Field
The utility model relates to the field of transformers, in particular to a three-phase LLC high-frequency transformer with a three-phase LLC resonant inductor.
Background
In the prior art of an aviation system, a power supply requires high input, high power density, high reliability, soft switching and low ripple, a DCDC converter with high voltage input generally adopts a resonant converter technology, low output ripple is required for low-voltage and high-current output, a three-phase LLC isolation converter technology is generally adopted at present, an isolation transformer of a three-phase LLC adopts an EE type magnetic core combined three-phase five-column high-frequency isolation transformer, in order to further improve the power density of a magnetic device through magnetic integration, a resonant inductor is obtained through winding separation, but longer gaps need to be cut or ground on three center columns, scattered magnetic flux can be generated at the gaps, the scattered magnetic flux can generate eddy current loss on nearby coils, the larger the B value of the magnetic core is, the larger the scattered magnetic flux is, the eddy current loss is increased, and in order to reduce the eddy current loss, the current common method is to select a smaller B value or increase the distance between the coils and the air gap of the magnetic core, however, the transformer needs a larger magnetic core for transmitting the same power, thereby being not beneficial to improving the power density.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention provides a three-phase LLC high-frequency transformer with three-phase LLC resonant inductors.
The utility model is realized by the following technical scheme:
the utility model provides a three-phase LLC high-frequency transformer with a three-phase LLC resonant inductor, which comprises: first magnetic core, second magnetic core, inductance winding, primary winding, secondary winding, first magnetic core with second magnetic core fixed connection, a plurality of first erection columns of first magnetic core, the second magnetic core is equipped with a plurality of second erection columns, inductance winding includes a plurality of first windings, primary winding includes a plurality of second windings, secondary winding includes a plurality of third windings, first winding second winding third winding first erection column, the quantity of second erection column equals, first winding cover is established on first erection column, the second winding third winding all establish on the second erection column, the second winding with there is the clearance between the third winding.
Furthermore, a plurality of first grooves are formed in the first magnetic core, the single first mounting column is located between two adjacent first grooves, and two sides of the first winding are respectively accommodated in the two adjacent first grooves.
Furthermore, the second magnetic core is provided with a plurality of second grooves, the single second mounting post is located between two adjacent second grooves, and two sides of the second winding and the third winding are respectively accommodated in the two adjacent second grooves.
Further, the second magnetic core divide into first installed part, second installed part, be equipped with first installation department on the first installed part, the second winding cover is established on the first installation department, be equipped with the second installation department on the second installed part, the third winding cover is established on the second installation department.
Furthermore, two first side columns are arranged on the first magnetic core, and the first mounting columns are located between the two first side columns.
Furthermore, two second side columns are arranged on the second magnetic core, the single second side column is aligned with the single first side column, and the plurality of second mounting columns are located between the two second side columns.
Furthermore, the first mounting columns correspond to the second mounting columns one to one.
The utility model has the beneficial effects that:
the utility model provides a three-phase LLC high-frequency transformer with a three-phase LLC resonant inductor, wherein the three-phase LLC high-frequency transformer with the three-phase LLC resonant inductor integrates an excitation inductor, an inductor winding is formed by conjugating with a primary winding and a secondary winding, so that a magnetic material of the three-phase LLC high-frequency transformer with the three-phase LLC resonant inductor can select a larger B value, the inductor winding can take a smaller B value, and the effect of dispersing an air gap is achieved by adjusting the distance between a first winding and a first mounting column, the distance between a second winding and a second mounting column and the distance between a third winding and the second mounting column, so that the overall scattered magnetic flux is smaller, the smaller coil eddy current loss is obtained, and the overall power transmission efficiency and the power density are improved.
Drawings
FIG. 1 is an exploded view of a three-phase LLC high-frequency transformer with a three-phase LLC resonant inductor according to the utility model;
fig. 2 is a perspective view of a three-phase LLC high-frequency transformer with three-phase LLC resonant inductor according to the present invention.
Detailed Description
In order to more clearly and completely explain the technical scheme of the utility model, the utility model is further explained with reference to the attached drawings.
Referring to fig. 1 to fig. 2, the present invention provides a three-phase LLC high-frequency transformer with three-phase LLC resonant inductor, where the three-phase LLC high-frequency transformer with three-phase LLC resonant inductor includes: the first magnetic core 10 is fixedly connected with the second magnetic core 20, the first magnetic core 10 includes a plurality of first mounting posts 11, the second magnetic core 20 is provided with a plurality of second mounting posts 21, the inductive winding 30 includes a plurality of first windings 31, the first magnetic core 40 includes a plurality of second windings 41, the secondary winding 50 includes a plurality of third windings 51, the number of the first windings 31, the number of the second windings 41, the number of the third windings 51, the number of the first mounting posts 11, the number of the second mounting posts 21 are equal, the number of the first windings 31 are sleeved on the first mounting posts 11, the number of the second windings 41 and the number of the third windings 51 are sleeved on the second mounting posts 21, and a gap exists between the second windings 41 and the third windings 51.
In this embodiment, a common EE-type or EI ferrite core is adopted to combine a three-phase five-limb isolation transformer, so as to meet different power requirements, the three-phase LLC high-frequency transformer with three-phase LLC resonant inductance integrates an excitation inductance, and the inductance winding 30 is formed by conjugating with the primary winding 40 and the secondary winding 50, so that a larger B value can be selected for the magnetic material of the three-phase LLC high-frequency transformer with three-phase LLC resonant inductance, and a smaller B value can be selected for the inductance winding 30, and by adjusting the distance between the first winding 31 and the first mounting limb 11, the distance between the second winding 41 and the second mounting limb 21, and the distance between the third winding 51 and the second mounting limb 21, the effect of dispersing air gaps is achieved, so that the overall stray magnetic flux is smaller, and thus smaller eddy current loss is obtained, thereby improving the overall power transmission efficiency and power density.
The inductor winding 30 is conjugated with the primary winding 40 and the secondary winding 50, so that compared with a resonant inductor which is completely externally arranged, magnetic materials are saved, and power density is improved.
And secondly, by configuring different heights of the magnetic core used by the resonant inductor, the capacity and the inductance of the magnetic core of the resonant inductor can be conveniently adjusted, and the debugging and the rectification in the product development are facilitated.
Further, a plurality of first grooves 12 are formed in the first magnetic core 10, a single first mounting post 11 is located between two adjacent first grooves 12, and two sides of the first winding 31 are respectively accommodated in two adjacent first grooves 12.
Further, the second magnetic core 20 is provided with a plurality of second grooves 22, a single second mounting post 21 is located between two adjacent second grooves 22, and two sides of the second winding 41 and the third winding 51 are respectively accommodated in two adjacent second grooves 22.
Further, the second magnetic core 20 is divided into a first mounting part 23 and a second mounting part 24, the first mounting part 23 is provided with a first mounting part 25, the second winding 41 is sleeved on the first mounting part 25, the second mounting part 26 is provided on the second mounting part 24, and the third winding 51 is sleeved on the second mounting part 26.
Furthermore, two first side columns 13 are arranged on the first magnetic core 10, and the plurality of first mounting columns 11 are located between the two first side columns 13.
Furthermore, two second side columns 27 are arranged on the second magnetic core 20, a single second side column 27 is aligned with a single first side column 13, and a plurality of second mounting columns 21 are arranged between the two second side columns 27.
Further, the first mounting posts 11 correspond to the second mounting posts 21 one to one.
In this embodiment, the first and second mounting elements 23 and 24 facilitate assembly of the second and third coils 41 and 51, so that the second and third coils 41 and 51 are mounted on the second core 20, and a general EE or EI type sendust or ferrite magnetic material is used as a core material to manufacture a low magnetic integrated three-phase planar transformer, thereby effectively improving power density and reducing cost.
In the embodiment, the universal EE magnetic core is adopted as the magnetic material for magnetic integration, the mold opening is not needed, the type, the width and the thickness of the magnetic material of the resonant inductor are the same as those of a transformer, and the three-phase LLC high-frequency transformer with the three-phase LLC resonant inductor can be assembled just by cutting or grinding according to the required magnetic material capacity, so that the three-phase LLC high-frequency transformer is convenient to process in production and processing, the magnetic core material is saved compared with the process of independently manufacturing the resonant inductor, and the production cost is saved.
Of course, the present invention may have other embodiments, and based on the embodiments, those skilled in the art can obtain other embodiments without any creative effort, and all of them are within the protection scope of the present invention.
Claims (7)
1. The utility model provides a take three-phase LLC high frequency transformer of three-phase LLC resonant inductance which characterized in that, take three-phase LLC high frequency transformer of three-phase LLC resonant inductance includes: first magnetic core, second magnetic core, inductance winding, primary winding, secondary winding, first magnetic core with second magnetic core fixed connection, a plurality of first erection columns of first magnetic core, the second magnetic core is equipped with a plurality of second erection columns, inductance winding includes a plurality of first windings, primary winding includes a plurality of second windings, secondary winding includes a plurality of third windings, first winding second winding third winding first erection column, the quantity of second erection column equals, first winding cover is established on first erection column, the second winding third winding all establish on the second erection column, the second winding with there is the clearance between the third winding.
2. The three-phase LLC high-frequency transformer with three-phase LLC resonant inductor as claimed in claim 1, wherein said first magnetic core is provided with a plurality of first recesses, a single said first mounting post is located between two adjacent said first recesses, and two sides of said first winding are respectively received in two adjacent said first recesses.
3. The three-phase LLC high-frequency transformer with three-phase LLC resonant inductor as claimed in claim 1, wherein said second core is provided with a plurality of second recesses, a single said second mounting post is located between two adjacent said second recesses, and two sides of said second winding and said third winding are respectively received in two adjacent said second recesses.
4. The three-phase LLC high-frequency transformer of claim 1, wherein said second magnetic core is divided into a first mounting portion and a second mounting portion, said first mounting portion is provided with a first winding, said second winding is sleeved on said first mounting portion, said second mounting portion is provided with a second winding, and said third winding is sleeved on said second mounting portion.
5. The three-phase LLC high-frequency transformer according to claim 1, wherein said first magnetic core is provided with two first side legs, and a plurality of said first mounting legs are located between said two first side legs.
6. The three-phase LLC high frequency transformer with three-phase LLC resonant inductance of claim 5, wherein said second core is provided with two second side legs, a single said second side leg being aligned with a single said first side leg, a plurality of said second mounting legs being located between two said second side legs.
7. The three-phase LLC high-frequency transformer with three-phase LLC resonant inductance of claim 1, wherein said first mounting posts are in one-to-one correspondence with said second mounting posts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121329526.6U CN215451143U (en) | 2021-06-15 | 2021-06-15 | Three-phase LLC high-frequency transformer with three-phase LLC resonant inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121329526.6U CN215451143U (en) | 2021-06-15 | 2021-06-15 | Three-phase LLC high-frequency transformer with three-phase LLC resonant inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215451143U true CN215451143U (en) | 2022-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121329526.6U Active CN215451143U (en) | 2021-06-15 | 2021-06-15 | Three-phase LLC high-frequency transformer with three-phase LLC resonant inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215451143U (en) |
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2021
- 2021-06-15 CN CN202121329526.6U patent/CN215451143U/en active Active
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