CN2446641Y - Inducer with each gas gap plane crossingly arranged along magnetic core rod - Google Patents
Inducer with each gas gap plane crossingly arranged along magnetic core rod Download PDFInfo
- Publication number
- CN2446641Y CN2446641Y CN 00221575 CN00221575U CN2446641Y CN 2446641 Y CN2446641 Y CN 2446641Y CN 00221575 CN00221575 CN 00221575 CN 00221575 U CN00221575 U CN 00221575U CN 2446641 Y CN2446641 Y CN 2446641Y
- Authority
- CN
- China
- Prior art keywords
- air gap
- magnetic core
- core
- post
- inductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses an inductor, which is simple in fabrication technology, and each air gap plane is in interlaced arrangement along adjacent magnetic core columns. The utility model is composed of two or more magnetic cores, two or more air gaps and one coil; the magnetic cores and the air gaps form a magnetic flux loop which is connected with the coil. The utility model adopts a special air gap arrangement method and a corresponding magnetic core structure, therefore, air gap planes of two adjacent magnetic core columns are not on the same plane in reference to the magnetic core columns, the air gaps adopts the interlaced arrangement along the magnetic core columns, and magnetic core columns are different in length and staggered by a finite distance. The utility model has the characteristics of effective reduction of coil attrition of the inductor, performance increase, etc.
Description
The utility model belongs to the essential electronic element field of magnetic element, specially refers to power electronic high-gradient magnetism element.
As everyone knows, the inductor element of existing band magnetic core, except the magnetic powder core that do not have gap structure by the magnetic core of single structure form, remaining inductor core all is made up of two or more core structures, and constituting the inductor of air gap by the end face of each magnetic core, this just makes inductor that two or more air gaps are arranged.To the inductor of existing band air gap, the end face plane of these air gaps generally is to be on the plane of sustained height of each core post (or long side direction of coil) in the consideration of principle.If each air gap length is identical, then the upper surface of each air gap is to be in same plane, and the lower surface also is to be in same plane.If each air gap length is incomplete same, then the center line of each air gap is to be in same plane, or the upper surface of each air gap or lower surface are to be in same plane.In a word, arrange that from air gap upward each air gap of inductor is on the same plane of each core post basically.The air gap arrangement of this inductor is not to help reducing very much the inductor coil loss.Existing inductor, its air gap on core post the position or be positioned at the middle part of core post, or be positioned at the top of core post.
Adopt the distributed air gaps structure though the inductor air gap that has is now arranged, be about to a bigger concentrated air gap and be separated into several less distributed air gaps, be beneficial to reduce the loss of coil.But this makes that the manufacturing of inductor is complicated a lot.
The air gap arrangement of inductor, coil loss to inductor has very big influence, this is because the arrangement of air gap can influence the magnetic flux that enters coil window, and the magnetic flux that enters coil window has very big influence to the eddy current loss of coil, thereby influenced coil loss, reduced the performance of inductor.Existing band is concentrated the air gap arrangement of the inductor of air gap, no matter be EI type, EE type, UU type, UI type or have other forms of gap structure, its each air gap is on the same plane basically, and this plane is middle part or the top that is positioned at core post.
The purpose of this utility model is: seek a kind of new air gap arrangement and corresponding simple core structure form of inductor, enter the magnetic flux of coil window with reduction, thereby reduce the eddy current loss of coil.
The realization the technical solution of the utility model is: inductor is by two or more magnetic cores, two or more air gaps and a coil are formed, magnetic core and air gap have been formed flux circuit, flux circuit and coil interlinkage, because special air gap arrangement and corresponding core structure, make that the air gap plane on adjacent two core post is being to be positioned on the Different Plane on the core post in the inductor, air gap adopts along the interlaced arrangement mode on the core post direction, the sample different in size of each core post, and certain distance that staggers.
Make air gap end face on adjacent two core post of inductor certain distance that on core post (or long limit of coil) direction, staggers, rather than be positioned on the same plane.If plural air gap is arranged on the core post, then each air gap adopts along the interlaced arrangement mode on core post (or long limit of the coil) direction.By to air gap position and the design of staggering distance, the magnetic field that enters in the coil window is reduced as far as possible.
The utlity model has following characteristics:
1, each air gap on the adjacent core post of inductor is not to be positioned on the same plane along on the direction on core post (or long limit of coil window), but certain distance that staggers is arranged.
2, design the position of each air gap on core post and the distance that staggers, the magnetic pressure between adjacent core post is reduced as far as possible, thereby reduce the loss of coil, improve the performance of inductor.
3, with the new corresponding new core structure form of air gap arrangement, it is obvious that the length of each adjacent core post differs.
4, with simple core structure and air gap arrangement, under the situation that does not increase manufacturing and process complexity, reduced the coil loss of inductor, improved the performance of inductor.
Now further structure situation of the present utility model is illustrated in conjunction with the accompanying drawings and by embodiment:
Fig. 2 is the air gap and the core structure of existing inductor.Each air gap length is identical, and the upper surface of each air gap is to be in same plane, and the lower surface also is to be in same plane.
Fig. 3 is the air gap and the core structure of existing inductor.Though each air gap length is slightly different, the central plane of each air gap is to be positioned on the same plane.
Fig. 4 is existing air gap and core structure.The upper surface of air gap is positioned at same plane, but gas length is slightly different.
Fig. 5 is existing inductor structure with distributed air gaps.Though each air gap is not to be positioned on the same plane, be to be positioned on the same core post.
Fig. 6 is an inductor core structure of the present utility model.Be made up of two difform magnetic cores, the air gap arrangement is formed structural representation by center pillar air gap and side column air gap.
Fig. 7 is an inductor core structure of the present utility model.Form by two identical shaped magnetic cores.The air gap arrangement is formed structural representation by center pillar air gap and side column air gap.
Fig. 8 is an inductor of the present utility model.Magnetic core is low cross section plate armature, the structural representation of being made up of a plurality of magnetic cores.
Fig. 9 is an inductor of the present utility model.The structural representation that magnetic core is made up of two identical shaped magnetic cores.
Figure 10 is that the art of this patent is applied to the situation with distributed air gaps inductor.
Figure 11 is that the utility model is used the schematic diagram that the Ampere circuit law in the Theory of Electromagnetic Field is analyzed.
Figure 12 is the magnetic pressure distribution map between adjacent core post under the utility model air gap arrangement
Figure 13 is the magnetic pressure distribution map between adjacent core post under the utility model air gap arrangement
Figure 14 is the magnetic pressure distribution map of the flat inductor in low cross section under the utility model air gap arrangement
Figure 15 is the magnetic pressure distribution map of the tool distributed air gaps inductor under the utility model air gap arrangement.
Figure 16 is under the existing air gap arrangement of EI structured core, the magnetic pressure distribution map between core post
Figure 17 is under the existing air gap arrangement of EE structured core, the magnetic pressure distribution map between core post
In the drawings, 1 is the magnetic core left side, top post; 2 is top magnetic core yoke; 3 is top magnetic core center pillar; 4 is middle intercolumniation air gap; 5 is coil; 6 is magnetic core the right, top post; 7 is the right post air gap; 8 is magnetic core the right, bottom post; 9 is bottom magnetic core yoke; 10 is bottom magnetic core center pillar; 11 is the magnetic core left side, bottom post; 12 is left side post air gap; 13 is flux circuit in the magnetic core; 14 top distributed air gaps; Core post between 15 distributed air gaps; 16 bottom distributed air gaps
Fig. 2, Fig. 3 and Figure 4 shows that the figure that background technology part in front is mentioned, in Fig. 2, if each air gap length is identical, then the upper surface of each air gap is to be in same plane, and the lower surface also is to be in same plane.In Fig. 3, if each air gap length is incomplete same, then the center line of each air gap is to be in same plane.In Fig. 4, the upper surface of each air gap or lower surface are to be in same plane.
Arrange that from air gap upward each air gap of inductor is on the same plane of each core post basically.The air gap arrangement of this inductor also is unfavorable for the reduction of inductor coil loss.
Figure 5 shows that inductor structure with distributed air gaps.Its two air gaps all are positioned on the magnetic core center pillar also parallel.
The explanation of structure shown in Figure 6: this inductor core structure is made up of two difform magnetic cores, and the left and right sides side column height of magnetic core equates that the air gap arrangement is made up of center pillar air gap and side column air gap.H1 and h2 represent two air gaps respectively respectively apart from the distance of yoke, and hc is the height of coil window.And h1 ≠ h2.If make the layout of air gap, should approximately make h1=(1/4) to the minimum that influences of coil loss
*Hc, h2=(3/4)
*Hc.
The explanation of structure shown in Figure 7: this inductor core structure is made up of two identical shaped magnetic cores, and the air gap arrangement is made up of a center pillar air gap and two side column air gaps.H1 and h2 represent two air gaps respectively respectively apart from the distance of yoke, and hc is the height of coil window.And h1 ≠ h2.If make the layout of air gap, should approximately make h1=(1/4) to the minimum that influences of coil loss
*Hc, h2=(2/4)
*Hc.
The explanation of structure shown in Figure 8: this inductor core is made up of three magnetic cores for low cross section plate armature.H1 and h2 represent the distance of air gap apart from yoke respectively, and hc is the width of coil window.And h1 ≠ h2.If make the layout of air gap, should approximately make h1=(1/4) to the minimum that influences of coil loss
*Hc, h2=(3/4)
*Hc.
The explanation of structure shown in Figure 9: this inductor core is made up of two identical shaped magnetic cores.H1 and h2 represent the distance of air gap apart from yoke respectively, and hc is the height of coil window.And h1 ≠ h2.If make the layout of air gap, should approximately make h1=(1/4) to the minimum that influences of coil loss
*Hc, h2=(2/4)
*Hc.
The explanation of structure shown in Figure 10: this inductor has two distributed air gaps on the magnetic core center pillar, has an air gap on the side column.Air gap on the side column and any air gap on the center pillar are not to be positioned on the plane, but with each all interleaved certain distance in center pillar air gap plane.
Figure 11 is the Ampere circuit law schematic diagram in the Theory of Electromagnetic Field.Because the magnetic permeability in the FERRITE CORE is very high, magnetic field intensity H ≈ 0, it is zero substantially that the magnetic pressure in the magnetic core is fallen.Fall with the magnetic pressure of coil ampere-turn equilibrium and mainly to concentrate in air gap and the coil window.If the magnetic pressure of ab point-to-point transmission is reduced to U, then according to Ampere circuit law, select path of integration as shown in the figure, can get U (h)+Ugi=IN/hc
*(h is that the ab point is from the height of yoke in the integration loop to h, and hc is the coil window height.Ugi is that the magnetic pressure of air gap i is fallen, substantially by Ugi=(IN/ Σ lgi)
*The lgi decision, wherein Σ lgi is each air gap length summation on the path that surrounds whole winding, lgi is an air gap i length.
According to Ampere circuit law, the magnetic pressure that can obtain between core post is fallen along the distribution map on the coil window height.If the total excitatory ampere-turn on the coil window is IN, and each air gap length is identical.Along with height h begins to increase from yoke, magnetic pressure between core post rises gradually by zero under excitatory magnetic potential effect, when arriving first air gap, because falling in the magnetic pressure of this air gap, the magnetic pressure that makes between core post reduces, after highly continuing to rise, magnetic pressure between core post continues to rise under excitatory magnetic potential effect, when arriving second air gap, the magnetic pressure of second air gap is fallen and is made the magnetic pressure between core post reduce, then along with rising highly, magnetic pressure between core post continues to rise, and arrives zero at last.
For different air gap arrangements, the magnetic pressure between core post is along the distribution difference of coil height, thus the feasible magnetic field intensity difference that enters coil window.Magnetic pressure between core post is big more, and the magnetic flux that enters coil window is also big more, thereby makes this part loss of coil increase.
Figure 12 is the magnetic pressure distribution map between core post under this patent air gap arrangement.This shows that the maximum of magnetic pressure is IN/4 between core post, the absolute average of magnetic pressure is IN/8.
Figure 13 is the magnetic pressure distribution map between core post under this patent air gap arrangement.Maximum between core post is pressed and is IN/2, and the absolute average of magnetic pressure is IN
*(3/16).
Figure 14 is for hanging down the version after the cross section magnetic core is used the art of this patent.Its magnetic pressure maximum is IN/4, and the absolute average of magnetic pressure is IN/8.
Figure 15 uses version and magnetic pressure distribution map after the art of this patent for the distributed air gaps inductor.Magnetic pressure maximum between adjacent core post is IN/4.
Figure 16 is under the existing air gap arrangement of EI structured core, the magnetic pressure distribution map between core post.The maximum of magnetic pressure is IN between core post, and the absolute average of magnetic pressure is IN/2.
Figure 17 is under the existing air gap arrangement of EE structured core, the magnetic pressure distribution map between core post.The maximum of magnetic pressure is IN/2 between core post, and the absolute average of magnetic pressure is IN/4.
Magnetic core is made up of magnetic core yoke and core post, is made of each air gap of inductor between the end face of the core post of the correspondence of each magnetic core low permeability and non-conductive material.
The height h1 of adjacent core post on the magnetic core, h2 does not wait, and the air gap of being made up of adjacent core post end face is to be positioned at along on the Different Plane of core post short transverse.
The utility model proposes a kind of make and technology on foolproof, be applicable to the new air gap arrangement of inductor of air gap and magnetic core and the core structure form of correspondence.Make each air gap on the adjacent core post along on the direction on core post (or long limit of coil window), certain distance staggers.And, the magnetic pressure between adjacent core post is reduced as far as possible by designing the position of each air gap on core post and the distance that staggers, thus the loss of inductor is reduced, performance improves.The utility model can be used for the design and the manufacturing of common purposes inductor, is more suitable for design and manufacturing in the power electronic inductor, by to air gap position and the design of staggering distance, the magnetic field that enters in the coil window is reduced as far as possible.
A kind of new air gap arrangement and corresponding core structure form that is applicable to inductor.By designing the position of each air gap, make each air gap on the adjacent core post along on the direction on core post (or long limit of coil), not as existing air gap arrangement, be positioned on the same plane, but make each air gap on the adjacent core post certain distance that staggers, no longer be positioned on the same plane.By designing the position of each air gap on core post and the distance that staggers, can reduce the loss of inductor coil effectively, thereby improve the performance of inductor.
Effect of the present utility model is verified by theoretical analysis and calculation and magnetic element electromagnetic field numerical value emulation method and experiment.When the inductor operating frequency is 100 KHz, if coil loss of the present utility model is made as 1 unit (is example with Figure 12 structure), then the coil loss of conventional cores structure and air gap arrangement thereof (as the EI shape structure of Figure 16 and the EE shape structure of Figure 17) is respectively 3.29 and 1.98 times of coil loss of the present utility model.
Claims (3)
1. each air gap plane is along the inductor of adjacent core post interlaced arrangement, it is characterized in that: inductor is by the magnetic core left side, top post (1), top magnetic core yoke (2), magnetic core that top magnetic core center pillar (3) and top magnetic core the right post (6) are formed and post (8) on the right of the magnetic core of bottom, bottom magnetic core yoke (9), the magnetic core that bottom magnetic core center pillar (10) and the magnetic core left side, bottom post are formed, middle intercolumniation air gap (4), two or more cracks that the right post air gap (7) and left side post air gap (12) are formed, and a coil (5) is formed, wherein magnetic core and air gap have been formed flux circuit (13), flux circuit (13) and coil (5) interlinkage, because special air gap arrangement and corresponding core structure, make that the air gap plane on adjacent two core post be not to be positioned on the same plane on the core post in the inductor, air gap adopts along the interlaced arrangement mode on the core post direction, the sample different in size of each core post, and certain distance that staggers.
2. a kind of each air gap plane according to claim 1 is along the inductor of adjacent core post interlaced arrangement, it is characterized in that: a magnetic core in two or more magnetic cores is formed by magnetic core yoke (2) with by the magnetic core left side, top post (1), top magnetic core center pillar (3) and top magnetic core center pillar (6), by low permeability and non-conductive material, form middle intercolumniation air gap (4), the right post air gap (7) and the left side post air gap (12) of inductor between the end face of the core post of the correspondence of each magnetic core.
3. a kind of each air gap plane according to claim 1 and 2 is characterized in that along the inductor of adjacent core post interlaced arrangement: the height h1 of adjacent core post on the magnetic core, h2 does not wait.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00221575 CN2446641Y (en) | 2000-08-26 | 2000-08-26 | Inducer with each gas gap plane crossingly arranged along magnetic core rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00221575 CN2446641Y (en) | 2000-08-26 | 2000-08-26 | Inducer with each gas gap plane crossingly arranged along magnetic core rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2446641Y true CN2446641Y (en) | 2001-09-05 |
Family
ID=33586448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00221575 Expired - Fee Related CN2446641Y (en) | 2000-08-26 | 2000-08-26 | Inducer with each gas gap plane crossingly arranged along magnetic core rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2446641Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789304A (en) * | 2010-03-22 | 2010-07-28 | 福州大学 | Magnetic element with permanent magnetic bias |
| CN101853729A (en) * | 2010-07-06 | 2010-10-06 | 福州大学 | Magnetic element with permanent magnetic bias |
| CN105869853A (en) * | 2015-01-23 | 2016-08-17 | 台达电子工业股份有限公司 | Magnetic core element and transformer |
| CN106920648A (en) * | 2015-12-28 | 2017-07-04 | 杨玉岗 | A kind of multi-phase coupling inductor |
-
2000
- 2000-08-26 CN CN 00221575 patent/CN2446641Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789304A (en) * | 2010-03-22 | 2010-07-28 | 福州大学 | Magnetic element with permanent magnetic bias |
| CN101853729A (en) * | 2010-07-06 | 2010-10-06 | 福州大学 | Magnetic element with permanent magnetic bias |
| CN105869853A (en) * | 2015-01-23 | 2016-08-17 | 台达电子工业股份有限公司 | Magnetic core element and transformer |
| US9887032B2 (en) | 2015-01-23 | 2018-02-06 | Delta Electronics, Inc. | Magnetic component and transformer |
| CN105869853B (en) * | 2015-01-23 | 2018-09-04 | 台达电子工业股份有限公司 | A kind of magnetic core element and transformer |
| CN106920648A (en) * | 2015-12-28 | 2017-07-04 | 杨玉岗 | A kind of multi-phase coupling inductor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100458990C (en) | Multilayer ceramic electronic device | |
| CN103928218A (en) | Magnetic Device With High Saturation Current And Low Core Loss | |
| CN1235361A (en) | Method of manufacturing the inductors | |
| CN1577647A (en) | Power inductor with reduced DC current saturation | |
| CN2446641Y (en) | Inducer with each gas gap plane crossingly arranged along magnetic core rod | |
| CN101789304A (en) | Magnetic element with permanent magnetic bias | |
| CN201181621Y (en) | Low-loss iron core reactor | |
| CN1391698A (en) | Split inductor with fractional turn of each winding and PCB including same | |
| CN113451711B (en) | Separation energy-saving storage battery tab forward and reverse tab pinching integrated mechanism | |
| CN201812661U (en) | Inductance ballast for high-intensity gas discharge lamp | |
| CN109935435B (en) | Multi-turn E-shaped coil applied to electromagnetic pulse flat plate forming | |
| Mao et al. | Winding loss mechanism analysis and design for new structure high-frequency gapped inductor | |
| CN207053358U (en) | A kind of pressed power-generating device based on soft magnetic bodies | |
| CN210325447U (en) | Thin type large-current inductor | |
| KR20100010765A (en) | Punched grid for lead-acid battery | |
| CN2906862Y (en) | Inductor structure that can improve installation efficiency | |
| CN201796686U (en) | Ferrite core for flat transformer | |
| CN213460032U (en) | Small eddy current high-speed magnetic circuit | |
| CN202084398U (en) | Dry type transformer with integrated coil structure | |
| CN206312708U (en) | Transformer core structure | |
| CN2491224Y (en) | Platform for silkcovered screen printing | |
| CN2641781Y (en) | Silicon steel core interval structure | |
| CN212209165U (en) | Low eddy current magnetic circuit of gyromagnetic filter | |
| CN2720590Y (en) | Ballast for high-voltage sodium lamp | |
| CN213070768U (en) | Combined magnetic core, three-phase reactor inductance magnetic core and three-phase reactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |