CN107731481A - A kind of Magnetic circuit topologies integrate magnet - Google Patents
A kind of Magnetic circuit topologies integrate magnet Download PDFInfo
- Publication number
- CN107731481A CN107731481A CN201710729518.2A CN201710729518A CN107731481A CN 107731481 A CN107731481 A CN 107731481A CN 201710729518 A CN201710729518 A CN 201710729518A CN 107731481 A CN107731481 A CN 107731481A
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- Prior art keywords
- magnet
- magnetic pole
- magnetic
- pole body
- flux
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Classifications
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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
- H01F27/24—Magnetic cores
-
- 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
- H01F27/08—Cooling; Ventilating
Abstract
The invention discloses a kind of Magnetic circuit topologies to integrate magnet, it is characterized in that：Include the integrated magnet of two mirror image docking, the integrated magnet is provided with magnetic recording level face, and magnetic recording level face upper and lower part is provided with relative center magnetic pole body, side magnetic pole body is provided with left and right sides of the magnetic recording level face.In the present invention, the magnetizing coil that original two correlations still separate can be arranged on same integrated magnet, original two respective magnetic flux paths are also arranged on same integrated magnet, simultaneously because two magnetizing flux characteristics that timesharing is alternately present in the common magnetic circuit arranged, so that the flux of the public magnetic flux designs flux summation when can be less than original split, so as to reduce the overall volume of integrated magnet and cost, the maximization of stock utilization and power density is realized.
Description
Technical field
The present invention relates to a kind of Magnetic circuit topologies to integrate magnet.
Background technology
High-gradient magnetism element in high frequency switch power is one of main element of Switching Power Supply cost, is to determine switch electricity
The principal element of volume source.
The filter inductance configuration used in some existing Switching Power Supplies is as shown in figure 1, such as two-phase alternating expression power factor
Inductance 101 and 102 in correction switch, or output rectification filter inductance 101 and 102, electromagnetic compatibility input filter inductance are flowed again
111 and 112, wherein every kind of on-off circuit has used the magnetic inductives of two splits to realize its function, due to magnet respectively
Separation, two circuit timesharing alternately caused magnetizing flux, simply flows in respective magnet, and can not more reasonably
Mutually share the resource of magnet, realize the maximization of stock utilization, and the maximization of power density.
The power conversion transformer also used in some Switching Power Supplies is as shown in Fig. 2 as PFC adds DC/DC
The transformer 201 and 202 of the two-stage Switching Power Supply structure of power output conversion, or the conversion of two-way parallel connection DC/DC power outputs
The transformer 201 and 202 of two-stage Switching Power Supply structure, every kind of on-off circuit in its two-stage construction of switch have used two respectively
The transformer of split realizes its function, due to the separation of magnet, the respective caused magnetizing flux of two circuits, simply respective
Magnet in flow, and more reasonably can not mutually share the resource of magnet, realize the maximization of stock utilization, and power
The maximization of density.
The content of the invention
In view of the deficiency of background technology, the technical problems to be solved by the invention are to provide a kind of stock utilization and power
The higher Magnetic circuit topologies of density integrate magnet.
Therefore, the present invention is adopted the following technical scheme that to realize：
A kind of Magnetic circuit topologies integrate magnet, it is characterized in that：Include the integrated magnet of two mirror image docking, the integrated magnet
Magnetic recording level face is provided with, magnetic recording level face upper and lower part is provided with relative center magnetic pole body, is provided with left and right sides of the magnetic recording level face
Side magnetic pole body.
The center magnetic pole body cross section is triangular in shape, and the side magnetic pole body cross section is in class is square or similar round.
Magnetic recording level face between the two centers magnetic pole body is provided with through hole.
The side magnetic pole body is provided with magnetizing coil.
The docking contact surface of described two integrated magnets can centered on magnetic pole body, band between the relative side magnetic pole body
There is air gap.
The docking contact surface of described two integrated magnets can centered on magnetic pole body, can between the relative side magnetic pole body
Part is with air gap or without air gap.
The docking contact surface of described two integrated magnets can be side magnetic pole body, band between the relative center magnetic pole body
There is air gap.
After adopting the above technical scheme, the magnetizing coil that original two correlations still separate, it now is possible to installed in same
On one integrated magnet, original two respective magnetic flux paths are also arranged on same integrated magnet, simultaneously because two
The individual magnetizing flux characteristic that timesharing is alternately present in the common magnetic circuit arranged so that the flux design of the public magnetic flux can be with
Flux summation during less than original split, so as to reduce the overall volume of integrated magnet and cost, realize stock utilization and
The maximization of power density.
Brief description of the drawings
The present invention has drawings described below：
Fig. 1 is the structural representation that filter inductance configures in background technology；
Fig. 2 is the structural representation of power conversion transformer in background technology；
Fig. 3 is the Split type structure schematic diagram of the present invention；
Fig. 4 is structural representation of the present invention in two-phase alternating expression integrated filter inductance pattern；
Fig. 5 is the structural representation that magnet is integrated in Fig. 4；
Fig. 6 is structural representation of the present invention when two-phase alternating expression integrates flyback transformer pattern；
Fig. 7 is the structural representation that magnet is integrated in Fig. 6；
Fig. 8 is structural representation of the present invention in two-stage isomery inductance or transformer intergration model；
Fig. 9 is the structural representation that magnet is integrated in Fig. 8；
Figure 10 is structural representation of the present invention in single-phase common mode, differential mode integrated inductor pattern；
Figure 11 is the structural representation that magnet is integrated in Figure 10；
Figure 12 is structural representation of the present invention in three-phase common mode, differential mode integrated inductor pattern；
Figure 13 is the structural representation that magnet is integrated in Figure 12.
Embodiment
Shown in reference picture 3, a kind of Magnetic circuit topologies provided by the invention integrate magnet, it is characterized in that：Including two mirror images pair
The integrated magnet 301 connect, the integrated magnet 301 are provided with magnetic recording level face 302, and the upper and lower part of magnetic recording level face 302 is provided with phase
To center magnetic pole body 303, the left and right sides of the magnetic recording level face 302 is provided with side magnetic pole body 304, the horizontal stroke of center magnetic pole body 303
Section is triangular in shape, and the cross section of side magnetic pole body 304 is in class is square or similar round, between the two centers magnetic pole body 303
Magnetic recording level face 302 be provided with through hole 305, the side magnetic pole body 304 is provided with magnetizing coil, described two integrated magnets 301
Docking contact surface can centered on magnetic pole body 303, carry air gap between the relative side magnetic pole body 304；Described two collection
Into magnet 301 docking contact surface can centered on magnetic pole body 303, can partly carry between the relative side magnetic pole body 304
Air gap or without air gap；The docking contact surface of described two integrated magnets 301 can be side magnetic pole body 304, described relative
Air gap is carried between the body of center magnetic pole 303.
A kind of Magnetic circuit topologies provided by the invention integrate magnet and are positioned over two magnetizing coils in switching power circuit
Among integrated magnet 301, and the staggeredly time-sharing characteristic of two magnetic fluxs is make use of, the two magnetic fluxs are directed to center magnetic pole body
303, therefore the volume of integrated magnet 301 is reduced on the whole；Because the cross section for integrating the center magnetic pole body 303 of magnet 301 is in
Triangle, when two side magnetic pole bodies 304 are all provided with air gap, center magnetic pole body 303 can reliably support integrated magnet 301
Entirety, and also help and design larger differential mode inductance amount, embody reliable differential mode effect；In addition, two center magnetic
Magnetic flux flux between cylinder 303 is relatively small, and the through hole 305 in magnetic recording level face 301 does not interfere with the overall flux of magnetic flux not only, instead
And integrated magnet 301 is caused to be easier to radiate.
A kind of Magnetic circuit topologies provided by the invention, which integrate magnet, following five kinds of mode of operations：
(1) two-phase alternating expression integrated filter inductance pattern
As shown in Figure 4 and Figure 5, two side magnetic pole bodies for integrating magnet are provided with air gap 404,414, and its center magnetic pole body does not have
There is out air gap, magnetizing flux 411 caused by magnetizing coil 401, magnetizing flux 412 caused by another magnetizing coil 402, two
For magnetizing flux on time interval, mutual reverse type flows through center column, and now, the magnetic flux for flowing through two side magnetic pole bodies produces
Magnetic direction be unidirectional, and magnetic direction caused by the magnetic flux of center magnetic pole body is flowed through to be two-way, the result is that significantly carrying
The magnetic field utilization rate of integrated magnet center magnetic pole body has been risen, and then has reduced the overall volume of integrated filter inductance.
(2) two-phase alternating expression integrates flyback transformer pattern
As shown in Figure 6 and Figure 7, two side magnetic pole bodies for integrating magnet are provided with air gap 504,514；Its center magnetic pole body does not have
There is out air gap.Magnetizing flux 511 caused by magnetizing coil 501, magnetizing flux 512 caused by another magnetizing coil 502, two
For magnetizing flux on time interval, mutual reverse type flows through center magnetic pole body, now, flows through the magnetic flux production of two side magnetic pole bodies
Raw magnetic direction is unidirectional, and flows through magnetic direction caused by the magnetic flux of center magnetic pole body to be two-way, the result is that significantly
The magnetic field utilization rate of integrated magnet center magnetic pole body is improved, and then reduces the overall volume of integrated flyback transformer.
(3) two-stage isomery inductance or transformer intergration model
As shown in Figure 8 and Figure 9, the joining place 604,614 of two side magnetic pole bodies of magnet is integrated, is opened according to selected
Close the demand of circuit topology, using or without using air gap, and its center magnetic pole body does not open air gap necessarily, circuit it is excitatory
Magnetizing flux 611 caused by coil 601, magnetizing flux 612 caused by the magnetizing coil 602 of another circuit, two excitatory magnetic
Lead on time interval, and on the direction for flowing through center magnetic pole body, can simultaneously equidirectional or different directions simultaneously, now,
Center magnetic pole body carries the general traffic of two magnetic fluxs.
(4) single-phase common mode, differential mode integrated inductor pattern
As shown in Figure 10 and Figure 11, the joining place for integrating two side magnetic pole bodies of magnet does not open air gap, and center magnetic
Cylinder is provided with air gap 705, the inflow current of live wire incoming end 703 of single-phase alternating current to magnetizing coil 701, caused magnetic flux side
To for 722, another zero line incoming end 713 of single-phase alternating current flows out electric current from magnetizing coil 702, and caused flow direction is
723；When the disengaging electric current of single-phase alternating current is equal, that is, pass in and out the two magnetizing coils electric current it is equal when, the two magnetic fluxs
722,723 is equal in magnitude, but in the opposite direction, flows through the total amount of magnetic flux 722,723 of two side magnetic pole bodies, referred to as zero sequence fluxes,
Equal to zero, now two magnetizing coils show as the function of common mode filtering inductance；When there is impact electricity the end of incoming cables of one-way communication electricity
Flow into fashionable, or when on-off circuit itself has cycle imbalance pulse current, flow through the magnetic flux 722,723 of two side posts
Total amount is no longer equal to zero, generates zero sequence fluxes, and due to integrating the peculiar structure of magnet, this zero sequence fluxes, which is directed into, to be flowed through
Center magnetic pole body, two inductance coils now show as the function of differential mode filter inductance.
(5) three-phase common mode, differential mode integrated inductor pattern
As shown in Figure 12 and Figure 13, the joining place for integrating two side magnetic pole bodies of magnet does not also open air gap, and center
Magnetic pole body is provided with air gap 805, and the three-phase inlet wire incoming end 803 of three-phase alternating current accesses magnetizing coil 801, caused zero sequence magnetic
Logical direction is 822, and the three-phase leading-out terminal 813 of three-phase alternating current is drawn from magnetizing coil 802, its caused zero sequence fluxes direction
For 823；When the disengaging current three-phase balance of three-phase alternating current, the two zero sequence fluxes 822 are equal to zero.Now two inductor wires
Circle shows as the function of three-phase common mode filtering inductance；When certain phase end of incoming cables of three-phase alternating current, to have dash current to enter fashionable, or opens
When a certain phase on powered-down road itself has cycle imbalance pulse current, the magnetic flux 822 of two side magnetic pole bodies, zero sequence are flowed through
The total amount of flow direction 823 is no longer equal to zero, zero sequence fluxes occurs；Due to integrating the peculiar structure of magnet, this zero sequence fluxes
It is directed into and flows through center magnetic pole body, two inductance coils now shows as the function of three-phase differential mode filter inductance.
Claims (7)
1. a kind of Magnetic circuit topologies integrate magnet, it is characterized in that：Include the integrated magnet of two mirror images docking, on the integrated magnet
Provided with magnetic recording level face, magnetic recording level face upper and lower part is provided with relative center magnetic pole body, and side is provided with left and right sides of the magnetic recording level face
Side magnetic pole body.
2. a kind of Magnetic circuit topologies according to claim 1 integrate magnet, it is characterized in that：The center magnetic pole body cross section is in
Triangle, the side magnetic pole body cross section is in class is square or similar round.
3. a kind of Magnetic circuit topologies according to claim 1 integrate magnet, it is characterized in that：Between the two centers magnetic pole body
Magnetic recording level face is provided with through hole.
4. a kind of Magnetic circuit topologies according to claim 1 integrate magnet, it is characterized in that：The side magnetic pole body, which is provided with, to swash
Magnetic coil.
5. a kind of Magnetic circuit topologies according to claim 1 integrate magnet, it is characterized in that：The docking of described two integrated magnets
Contact surface can centered on magnetic pole body, carry air gap between the relative side magnetic pole body.
6. a kind of Magnetic circuit topologies according to claim 1 integrate magnet, it is characterized in that：The docking of described two integrated magnets
Contact surface can centered on magnetic pole body, can be partly with air gap or without air gap between the relative side magnetic pole body.
7. a kind of Magnetic circuit topologies according to claim 1 integrate magnet, it is characterized in that：The docking of described two integrated magnets
Contact surface can be side magnetic pole body, and air gap is carried between the relative center magnetic pole body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710729518.2A CN107731481A (en) | 2017-08-23 | 2017-08-23 | A kind of Magnetic circuit topologies integrate magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710729518.2A CN107731481A (en) | 2017-08-23 | 2017-08-23 | A kind of Magnetic circuit topologies integrate magnet |
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| Publication Number | Publication Date |
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| CN107731481A true CN107731481A (en) | 2018-02-23 |
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Family Applications (1)
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| CN201710729518.2A Pending CN107731481A (en) | 2017-08-23 | 2017-08-23 | A kind of Magnetic circuit topologies integrate magnet |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08115825A (en) * | 1994-10-18 | 1996-05-07 | Matsushita Electric Ind Co Ltd | Coil component |
| CN103762853A (en) * | 2010-01-19 | 2014-04-30 | 华为技术有限公司 | Magnetic integrated double-end converter |
| CN203721415U (en) * | 2014-01-06 | 2014-07-16 | 伍尔特电子(深圳)有限公司 | Differential mode and common mode integrated inductor |
| CN104025217A (en) * | 2014-03-05 | 2014-09-03 | 深圳市欣锐特科技有限公司 | Magnetic core, integrated magnetic element, active clamp forward-flyback circuit and switch power supply |
| US20140266535A1 (en) * | 2013-03-14 | 2014-09-18 | Hiq Solar, Inc. | Low loss inductor with offset gap and windings |
| CN205016341U (en) * | 2015-07-22 | 2016-02-03 | 上海正泰电源系统有限公司 | Magnetism coupling inductance ware of crisscross parallelly connected converter and magnetic core thereof |
| CN205069301U (en) * | 2015-10-30 | 2016-03-02 | 厦门南磁电子有限公司 | Telescopic combination center pillar magnetic core |
| CN205122344U (en) * | 2015-11-06 | 2016-03-30 | 江西尚朋电子科技有限公司 | EE type magnetic element |
-
2017
- 2017-08-23 CN CN201710729518.2A patent/CN107731481A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08115825A (en) * | 1994-10-18 | 1996-05-07 | Matsushita Electric Ind Co Ltd | Coil component |
| CN103762853A (en) * | 2010-01-19 | 2014-04-30 | 华为技术有限公司 | Magnetic integrated double-end converter |
| US20140266535A1 (en) * | 2013-03-14 | 2014-09-18 | Hiq Solar, Inc. | Low loss inductor with offset gap and windings |
| CN203721415U (en) * | 2014-01-06 | 2014-07-16 | 伍尔特电子(深圳)有限公司 | Differential mode and common mode integrated inductor |
| CN104025217A (en) * | 2014-03-05 | 2014-09-03 | 深圳市欣锐特科技有限公司 | Magnetic core, integrated magnetic element, active clamp forward-flyback circuit and switch power supply |
| CN205016341U (en) * | 2015-07-22 | 2016-02-03 | 上海正泰电源系统有限公司 | Magnetism coupling inductance ware of crisscross parallelly connected converter and magnetic core thereof |
| CN205069301U (en) * | 2015-10-30 | 2016-03-02 | 厦门南磁电子有限公司 | Telescopic combination center pillar magnetic core |
| CN205122344U (en) * | 2015-11-06 | 2016-03-30 | 江西尚朋电子科技有限公司 | EE type magnetic element |
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Application publication date: 20180223 |
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