CN105448490A - High-efficiency ultra-high frequency electronic transformer with coaxial structure - Google Patents
High-efficiency ultra-high frequency electronic transformer with coaxial structure Download PDFInfo
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- CN105448490A CN105448490A CN201410722882.2A CN201410722882A CN105448490A CN 105448490 A CN105448490 A CN 105448490A CN 201410722882 A CN201410722882 A CN 201410722882A CN 105448490 A CN105448490 A CN 105448490A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F19/00—Fixed transformers or mutual inductances of the signal type
- H01F19/04—Transformers or mutual inductances suitable for handling frequencies considerably beyond the audio range
- H01F19/08—Transformers having magnetic bias, e.g. for handling pulses
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Multimedia (AREA)
- Coils Of Transformers For General Uses (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The invention relates to a high-efficiency ultra-high frequency electronic transformer with a coaxial structure. The key of the high-efficiency ultra-high frequency electronic transformer is that relative positions of a primary winding and a secondary winding are redistributed; the current direction of each turn of wire in the primary winding is controlled; the mode that energy is transmitted to the secondary winding by a traditional transformer through an external synthetic magnetic flux of the primary winding is changed; the energy is transmitted to the secondary winding by an interturn magnetic flux of the primary winding, namely energy transmission of the primary winding and the secondary winding is carried out between the magnetic fluxes in the windings while the external synthetic magnetic flux generating electromagnetic interference does not participate in energy transmission, so that complete stripping of the two magnetic fluxes for energy transmission and electromagnetic interference is achieved; and the electromagnetic interference is greatly weakened and suppressed while the transmission efficiency and the power density of the transformer are effectively improved.
Description
Technical field
The present invention relates to high-frequency electronic transformer technology.Particularly relate to the high-effect UHF electronic transformer of coaxial configuration.
Background technology
Along with the continuous progress of power technology, the application of the secondary power supply of switching technique is adopted almost to permeate every field, one of core devices of Switching Power Supply is high-frequency electronic transformer, and the technical bottleneck of high-frequency electronic transformer limits the progress of Switching Power Supply, that can not exaggerate says---the performance of high-frequency electronic transformer determines the overall performance of Switching Power Supply.Up to the present, traditional high-frequency electronic transformer has been difficult to meet needs that are high-effect, high power conversion power supply.The technical bottleneck of its key is:
1, the power capacity of high-frequency electronic transformer is directly proportional to the volume of transformer, under the condition of given volume, wants the power capacity strengthening transformer, can only be realized by the operating frequency promoting conversion electric power.And the raising of frequency can strengthen skin effect and the approach effect of wire, meanwhile, the loss of magnetic core also can strengthen thereupon, for traditional transformer, the lifting of frequency be have circumscribed;
2, the efficiency of transmission of high-frequency electronic transformer limits its power density, the conversion efficiency of traditional high-power high-frequency electronic transformer is difficult to breakthrough 90%, so not only cause energy waste, add manufacturing cost, and constrain the reduction of volume;
3, the Energy Transfer of high-frequency electronic transformer is coupled to secondary winding to carry out by the resultant flux of armature winding, and this magnetic flux also can produce electromagnetic interference simultaneously, the magnetic flux carrying out Energy Transfer is same magnetic flux with the magnetic flux producing electromagnetic interference, and the electromagnetic interference of the larger generation of power of transmission is also stronger;
4, switching mode power supply transformer transmission is that front and back are along precipitous pulse signal, its high-frequency harmonic is very abundant, while transmission effective energy, the stray electromagnetic irradiation that produces can cause very strong electromagnetic interference, and strengthens in geometric progression along with the increasing interference of power.
Summary of the invention
The winding of transformer is made up of some circle wires, and during winding energising, the surrounding of each wire all can produce magnetic field, and the intensity in magnetic field is directly proportional to electric current, and right fist rule is followed in the direction of magnetic flux.
The winding of conventional highfrequency electronic transformer adopts cluster type coiling, the magnetic flux 1-2 that single wire produces synthesizes rear formation resultant flux 1-3 mutually, the armature winding turn-to-turn resultant flux 1-2 of tradition boundling coiling cancels out each other and does not participate in Energy Transfer, and outside resultant flux 1-3 passes through the coupling of magnetic core to secondary winding transmitting energy; The outside resultant flux 1-3 of armature winding of transmitting energy is while transmitting energy, and also can produce electromagnetic interference, that is: transmitting energy is same magnetic flux with producing electromagnetic interference.
By simply analyzing and can finding out, traditional transformer efficiency is low, disturb large basic reason to be: the magnetic flux carrying out Energy Transfer between primary and secondary is same magnetic flux with the magnetic flux producing electromagnetic interference; And only have the wire accounting for the little winding periphery of primary coil total number of turns ratio to participate in the synthesis of this magnetic flux, and the magnetic flux of the winding inner lead of the overwhelming majority is cancelled out each other and is not participated in Energy Transfer.Therefore the energy transmission efficiency of transformer is low, and power density cannot improve, more seriously along with the increasing of transformer efficiency, companion's and electromagnetic interference also strengthen thereupon.
Key of the present invention is: the relative position of redistribution armature winding and secondary winding, and control the direction of each circle current in wire in armature winding, overturn traditional transformer by the resultant flux of the armature winding pattern to secondary winding transmitting energy, utilize the turn-to-turn magnetic flux of armature winding to secondary winding transmitting energy---namely, the transmission of secondary winding energy carries out between the magnetic flux of winding inside, and the outside resultant flux producing electromagnetic interference does not participate in Energy Transfer completely, achieve Energy Transfer and electromagnetic interference two magnetic fluxs are peeled off completely, while effectively promoting transformer efficiency of transmission and power density, fundamentally weaken and suppress electromagnetic interference.
Coaxial configuration can be adopted to make high-frequency electronic transformer, and the inner wire 3-1 of concentric conductor is the armature winding of transformer, and outer conductor 3-2 is the secondary winding of transformer, parallel distribution between wire; Control the wiring of armature winding, make the anti-phase of adjacent wires, just can ensure that between every circle wire, inner resultant flux 3-4 strengthens mutually, outside magnetic flux is cancelled out each other; Due to secondary winding be coaxially distributed in outside armature winding with armature winding close coupling, utilize the inside resultant flux 3-4 transmitting energy of wire, outside magnetic flux and Energy Transfer are irrelevant and cancel out each other.The electromagnetic interference significantly weakened more effectively can be suppressed at the intercalation screen 4-1 of winding assembly; Screen is designed with Insulating gap 4-2, prevents closed eddy current; Screen is designed with electrical terminal, ground connection or unsettled as the case may be during practical application.
Accompanying drawing explanation
Fig. 1: traditional transformer primary winding structure and magnetic flux distribution schematic diagram
1-1---primary wires;
1-2---single turn wire magnetic flux;
1-3---winding resultant flux.
Fig. 2: the magnetic flux distribution schematic diagram of interlayer anti-phase winding
1-1---primary wires;
1-2---single turn wire magnetic flux;
1-3---winding resultant flux;
14---interlayer resultant flux.
Fig. 3: the magnetic flux distribution schematic diagram of turn-to-turn anti-phase winding
2-1---single turn wire;
2-2---single turn wire magnetic flux;
2-3---resultant flux between wire.
Fig. 4: adopt coaxial configuration and the magnetic flux distribution schematic diagram of armature winding turn-to-turn anti-phase
3-1---concentric conductor inner wire (armature winding);
3-2---concentric conductor outer conductor (secondary winding);
3-3---single turn wire magnetic flux;
3-4---resultant flux between wire.
Fig. 5: primary and secondary winding is the high-frequency electronic transformer structural representation of coaxial configuration
3-1---concentric conductor inner wire (armature winding);
3-2---concentric conductor outer conductor (secondary winding).
Fig. 6: the coaxial configuration high-power high-frequency electronic transformer radial section schematic diagram of band screen
3-1---concentric conductor inner wire (armature winding);
3-2---concentric conductor outer conductor (secondary winding);
3-3---single turn wire magnetic flux;
3-4---resultant flux between wire;
4-1---interlayer screen;
4-2---screen Insulating gap.
Embodiment
Primary and secondary winding is coaxial configuration and the ultralow EMI high-power high-frequency electronic transformer of armature winding turn-to-turn anti-phase.
Concentric conductor is adopted to make high-power high-frequency electronic transformer, its structure is cylindric---the radial section of concentric conductor distribution is circular, and the embedded screen of the interlayer of winding, screen has through gap vertically, prevent the induced current of screen from forming circulation, screen is single-ended has wire to pick out, and supply used time ground connection uses.
Utilize the armature winding of heart yearn as transformer of concentric conductor, using the secondary winding of the outer conductor of concentric conductor as transformer, take the suitable mode of connection, ensure adjacent wires anti-phase in armature winding, the performance that the turn-to-turn magnetic flux that just can make full use of armature winding strengthens mutually improves the efficiency of Energy Transfer between primary and secondary winding to greatest extent.
Now the turn-to-turn magnetic flux of armature winding inside strengthens mutually, cancels out each other almost nil at the outside resultant flux of cylindrical radial, and the effect of screen ensures that its stray radiation is almost nil in addition, and therefore electromagnetic interference can drop to minimum.
Claims (6)
1. the high-effect UHF electronic transformer of coaxial configuration.It is characterized in that: according to Ampere's law and associated solenoid principle, the flow direction of electric current in the primary and secondary winding of reasonable layout electronic transformer and setting armature winding, the turn-to-turn resultant flux of electronic transformer armature winding inside is strengthened mutually, and outside resultant flux is cancelled out each other, traditional transformer is carried out the pattern of Energy Transfer by the resultant flux of armature winding to secondary winding, change to and utilize the interior flux of armature winding to secondary winding transmitting energy.While effectively promoting transformer efficiency of transmission and power density, significantly reduce the electromagnetic interference that transformer produces because of outside resultant flux.Suitable embedded screen can reduce the electromagnetic radiation that residual outside resultant flux produces more effectively.
2., according to the primary and secondary winding of reasonable layout electronic transformer according to claim 1, adopt concentric conductor to make primary and secondary winding.It is characterized in that: the wire of primary and secondary winding is coaxial configuration, the inner wire of concentric conductor is armature winding, and outer conductor is secondary winding, and the distribution of Transformer Winding is 3D stereochemical structure.
3. according to the flow direction of electric current in setting armature winding according to claim 1, there is distinguishing feature.It is characterized in that: the transformer of concentric conductor structure, adjacent concentric conductor inner wire (armature winding) anti-phase.
4. mutually strengthen according to the turn-to-turn resultant flux of coaxial electronics primary winding inside according to claim 1, and outside resultant flux is cancelled out each other.It is characterized in that: the coaxial configuration transformer that turn-to-turn is coupled is due to the anti-phase of adjacent wires, and its turn-to-turn resultant flux mutually strengthens, and the resultant flux of outside is cancelled out each other.The secondary wire coaxially distributed with primary wires takes full advantage of the magnetic flux that armature winding turn-to-turn strengthens mutually, improves energy transmission efficiency, increases power density.
5. peel off completely with the magnetic flux producing electromagnetic interference according to the magnetic flux of transmitting energy in coaxial electronic transformer according to claim 1.It is characterized in that: the Energy Transfer of coaxial configuration electronic transformer carries out between the single turn wire of primary and secondary winding, and the outside resultant flux producing electromagnetic interference is significantly cut down because cancelling out each other, and this part magnetic flux does not participate in power conversion, so in the electronic transformer of coaxial configuration, the magnetic flux of transmitting energy is thoroughly peeled away with the magnetic flux producing electromagnetic interference.
6. the electromagnetic radiation of residual outside resultant flux generation more effectively can be reduced according to suitable embedded screen according to claim 1.It is characterized in that: the flat surface transformer of layer coupling embeds electro-magnetic screen layer at its most top layer and the bottom, and has Insulating gap on the shielding layer, and prevent the induced current of screen from forming circulation, screen is single-ended has wire to pick out, can for ground connection.
The concentric conductor transformer of turn-to-turn coupling, for reaching minimum electromagnetic radiation effect, adopts cylindrical-shaped structure usually.Armature winding can Multi-layers distributing from inside to outside, and now the number of turn of every one deck should be the anti-phase that even number just can ensure adjacent wires.Minimum for making electromagnetic interference be down to, can at concentrically ringed intercalation screen.Screen has through gap vertically, and prevent the induced current of screen from forming circulation, screen is single-ended has wire to pick out, can for ground connection.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410722882.2A CN105448490A (en) | 2014-12-04 | 2014-12-04 | High-efficiency ultra-high frequency electronic transformer with coaxial structure |
| PCT/CN2015/096286 WO2016086873A1 (en) | 2014-12-04 | 2015-12-03 | Coaxial structure high efficiency ultrahigh frequency electronic transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410722882.2A CN105448490A (en) | 2014-12-04 | 2014-12-04 | High-efficiency ultra-high frequency electronic transformer with coaxial structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105448490A true CN105448490A (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410722882.2A Pending CN105448490A (en) | 2014-12-04 | 2014-12-04 | High-efficiency ultra-high frequency electronic transformer with coaxial structure |
Country Status (2)
| Country | Link |
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| CN (1) | CN105448490A (en) |
| WO (1) | WO2016086873A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841398A (en) * | 2019-02-19 | 2019-06-04 | 南京航空航天大学 | A kind of DC converting system based on integrated planar matrix transformer |
| WO2020147853A1 (en) * | 2018-12-03 | 2020-07-23 | 邢益涛 | Wireless energy transmission device with noise reduction design |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065778A (en) * | 2012-12-29 | 2013-04-24 | 深圳市澳磁电源科技有限公司 | Method for adjusting leakage inductance of high-frequency transformer and high-frequency transformer |
| JP2014093378A (en) * | 2012-11-01 | 2014-05-19 | Shimazu Co Ltd | Electric power transformer and manufacturing method therefor |
| CN104064322A (en) * | 2013-03-22 | 2014-09-24 | 王勇 | Novel high-effect and high-frequency impulse transformer with low stray electromagnetic radiation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064332A (en) * | 2013-03-22 | 2014-09-24 | 王勇 | High-effect power transformer with low stray radiation |
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2014
- 2014-12-04 CN CN201410722882.2A patent/CN105448490A/en active Pending
-
2015
- 2015-12-03 WO PCT/CN2015/096286 patent/WO2016086873A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014093378A (en) * | 2012-11-01 | 2014-05-19 | Shimazu Co Ltd | Electric power transformer and manufacturing method therefor |
| CN103065778A (en) * | 2012-12-29 | 2013-04-24 | 深圳市澳磁电源科技有限公司 | Method for adjusting leakage inductance of high-frequency transformer and high-frequency transformer |
| CN104064322A (en) * | 2013-03-22 | 2014-09-24 | 王勇 | Novel high-effect and high-frequency impulse transformer with low stray electromagnetic radiation |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020147853A1 (en) * | 2018-12-03 | 2020-07-23 | 邢益涛 | Wireless energy transmission device with noise reduction design |
| US11750035B2 (en) | 2018-12-03 | 2023-09-05 | Shenzhen Qitian Taiyi Technology Co., Ltd. | Wireless power transfer device with electromagnetic interference (EMI) suppression |
| CN109841398A (en) * | 2019-02-19 | 2019-06-04 | 南京航空航天大学 | A kind of DC converting system based on integrated planar matrix transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016086873A1 (en) | 2016-06-09 |
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Addressee: SHENZHEN GAOLING TECHNOLOGY CO., LTD. Document name: Notification of Passing Preliminary Examination of the Application for Invention |
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Application publication date: 20160330 |