CN103871716A - Integrated magnetic structure - Google Patents
Integrated magnetic structure Download PDFInfo
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- CN103871716A CN103871716A CN201410054938.1A CN201410054938A CN103871716A CN 103871716 A CN103871716 A CN 103871716A CN 201410054938 A CN201410054938 A CN 201410054938A CN 103871716 A CN103871716 A CN 103871716A
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Abstract
The invention discloses an integrated magnetic structure, and belongs to the technical field of electromagnetism. The integrated magnetic structure comprises a horizontal magnetic core shaped like a Chinese character Ri, first and second side column windings wound on a left side column, third and fourth side column windings wound on a right side column and a middle column winding wound on a middle column, wherein the first and third side column windings are connected and forwards coupled; the second and fourth side column windings are connected and forwards coupled. When the integrated magnetic structure is applied to the integration of a transformer and an inductor, magnetic flux generated by a winding of the inductor passes through a magnetic circuit of the transformer, so that a magnetic core material can be fully utilized, and the size of a magnetic core can be reduced; when the integrated magnetic structure is applied to the integration of a common mode choke and a differential mode choke, magnetic flux generated by a winding of the differential mode choke passes through the common mode choke part, so that the whole magnetic core is fully utilized, and the size of a filter is reduced; moreover, the common mode choke and the differential mode choke are decoupled, and can be independently regulated without influence.
Description
Technical field
The invention belongs to electromagnetic technology field, relate to a kind of magnet integrate construction.
Background technology
In the numerous areas such as Aero-Space, electric automobile, photovoltaic generation, the high-power power electronic converter parts that are absolutely necessary.How effectively to reduce the volume of magnetic element, bring to power density, improve conversion efficiency, improve electromagnetic interference (EMI) situation, not only be related to the normal work of converter itself, and be related to optimization, the raising of efficiency of energy utilization and the reliable and stable operation of control section of entire system performance.By transformer in converter and inductor integrate, differential mode and common mode inductance integrate in filter, can reduce the overall volume of magnetic element, improve the power density of converters.
Figure 1 shows that in prior art the structural representation of typical transformer and inductor magnet integrate construction.This structure is made up of two E type magnetic cores 31,32 conventionally, and transformer primary side winding 34 and secondary winding 35, on magnetic core side column, are wound around inductor winding 33 on another one side column.The inductive part of magnetic core and transformer portion can have air gap 36,37, and magnetic core center pillar is without air gap.It is integrated that this structure can realize the decoupling zero of inductance and transformer, its shortcoming is: in actual use, the transformer portion of magnetic core is not conventionally containing direct current flux component, but have larger exchange flux component, for control transformer loss, exchange flux component can limit to some extent, and limits value is conventionally far below the saturation value of core material, thereby it is insufficient to cause transformer portion magnetic core to use; And inductive part contains larger direct current flux component, saturated in order to prevent the magnetic core of this part, need to add air gaps 36 or increase the magnetic core sectional area of inductive part, in high-power applications occasion, the loss of this structure and volume increase obviously.
Summary of the invention
The object of the present invention is to provide one can make full use of core material, be conducive to reduce the magnet integrate construction of magnetic element volume.
In order to achieve the above object, solution of the present invention is:
A kind of magnet integrate construction, comprise " day " shaped magnetic core of lying low, be wound in the first side column winding and the second side column winding on the side column of described " day " shaped magnetic core left side, be wound in the 3rd side column winding and the 4th side column winding on side column on the right of described " day " shaped magnetic core and be wound in described in center pillar winding on " day " shaped magnetic core center pillar; One end of the first side column winding is connected with one end of the 3rd side column winding, and forward coupling; One end of the second side column winding is connected with one end of the 4th side column winding, and forward coupling.
On described left side side column and described left side side column, the equivalent magnetic resistance of winding equals the equivalent magnetic resistance of winding on described the right side column and described the right side column.
The number of turn of the first winding equals the number of turn of the tertiary winding; The number of turn of the second winding equals the number of turn of the 4th winding.
Left side side column, center pillar and the right side column of described magnetic core has the first air gap, interstice and the 3rd air gap.
The first air gap, interstice and the 3rd air gap equal zero.
Described " day " shaped magnetic core lying low comprises the E type magnetic core that Open Side Down and the I type magnetic core lying low.
Described magnet integrate construction also comprises the n group winding being wound on the side column of the described left side and is wound in the n group winding on the side column of described the right; Described n is more than or equal to 1; Described be wound in n on the side column of left side group winding with described in to be wound in n group winding on the side column of the right corresponding one by one, one end of winding connection described in corresponding two groups, and forward is coupled.
On described left side side column and described left side side column, the equivalent magnetic resistance of winding equals the equivalent magnetic resistance of winding on described the right side column and described the right side column.
The equal turn numbers of winding described in two groups of described correspondence.
Described " day " shaped magnetic core lying low comprises two E type magnetic cores that opening is relative.
Owing to adopting such scheme, the invention has the beneficial effects as follows: magnet integrate construction of the present invention can be saved the overall volume of magnetic element greatly, improve the power density of converters.For example, in the time being applied to integrated transformer and inductor, the magnetic flux that inductor winding produces can, through the magnetic circuit of transformer, can make full use of core material, reduces core volume; Being applied to integrated common mode inductance and poor while touching inductance, the magnetic flux that differential mode inductance winding produces can pass through common mode inductance part, thereby whole magnetic core is fully used, reduce the volume of filter, and common-mode inductor and the decoupling zero of differential mode inductance device, both can adjust separately, are independent of each other.
Accompanying drawing explanation
Fig. 1 is the structural representation of typical transformer and inductor magnet integrate construction in prior art;
Fig. 2 a is the structural representation of magnet integrate construction in first embodiment of the invention;
Fig. 2 b is the equivalent magnetic circuit figure of Fig. 2 a;
Fig. 2 c is the equivalent circuit diagram of Fig. 2 a;
Fig. 3 is the structural representation of magnet integrate construction in second embodiment of the invention;
Fig. 4 is the structural representation of magnet integrate construction in third embodiment of the invention.
In accompanying drawing: the equivalent resistance of winding on R11, left side side column and left side side column; The equivalent resistance of winding on R12, the right side column and the right side column; 10, center pillar winding; 11, the first side column winding; 12, the second side column winding; 13, the 3rd side column winding; 14, the 4th side column winding; 16, the first air gap; 17, interstice; 18, the 3rd air gap; 21, I type magnetic core; 22, E type magnetic core; 1001, center pillar winding; 1101, the first side column winding; 1201, the second side column winding; 1301, the 3rd side column winding; 1401, the 4th side column winding; 1501, the 5th side column winding; 1901, hexagonal column winding; 1601, the first air gap; 1701, interstice; 1801, the 3rd air gap; 2101, I type magnetic core; 2201, E type magnetic core; 1002, center pillar winding; 1102, the first side column winding; 1202, the second side column winding; 1302, the 3rd side column winding; 1402, the 4th side column winding; 1502, the 5th side column winding; 1902, hexagonal column winding; 1602, the first air gap; 1702, interstice; 1802, the 3rd air gap; 2102, E type magnetic core; 2202, E type magnetic core; 31, E type magnetic core; 32, E type magnetic core; 33, inductor winding; 34, transformer primary side winding; 35, transformer secondary winding; 36, air gap; 37, air gap.
Embodiment
Below in conjunction with accompanying drawing illustrated embodiment, the present invention is further illustrated.
In order to reduce the overall volume of magnetic element, improve the power density of converters, the present invention proposes one and can make full use of core material, be conducive to reduce the magnet integrate construction of magnetic element volume.
Be the structural representation of magnet integrate construction in first embodiment of the invention as shown in Figure 2 a.In the present embodiment take this magnet integrate construction as transformer and inductor magnet integrate construction describe as example.This magnet integrate construction comprises " day " the font magnetic core lying low, by E shape magnetic core 22 with I type magnetic core 21 is overlapped forms.On the center pillar of " day " font magnetic core that this lies low, to be wound around inductor winding be center pillar winding 10, on its left side side column, be wound around i.e. the first side column winding 11 and i.e. the second side column winding 12 of some transformers secondary winding of part transformer primary side winding, and the transformer primary side winding of remainder i.e. the 3rd side column winding 13 and transformer secondary winding the 4th side column winding 14 is wrapped on its right side column.One end of one end of the first side column winding 11 and the 3rd side column winding 13 interconnects, and makes both form forward coupled relation; One end of one end of the second side column winding 12 and the 4th side column winding 14 interconnects, and also makes both form forward coupled relation.On side column and center pillar, from left to right have the first air gap 16, interstice 17 and the 3rd air gap 18.Fig. 2 b is the equivalent magnetic circuit figure of Fig. 2 a; Fig. 2 c is the equivalent circuit diagram of Fig. 2 a.
In the present embodiment, the number of turn of side column winding and air gap meet following formula:
N
P1=N
P2；
N
S1=N
S2；
R11=R12；
Wherein, N
p1for the number of turn of former limit winding on the side column of the left side; N
p2for the number of turn of former limit winding on the side column of the right; N
s1for the number of turn of secondary winding on the side column of the left side; N
s2for the number of turn of secondary winding on the side column of the right; R11 is the equivalent resistance of winding on left side side column and left side side column; R12 is the equivalent resistance of winding on the right side column and the right side column.
Therefore, the exchange flux that center pillar winding 10 produces is identical with the electromotive force size inducing on the 3rd side column winding 13 at the first side column winding 11, opposite direction.Due to the first side column winding 11 with the 3rd side column winding 13 interconnects and forward coupling, so on the winding of whole former limit, because the induced electromotive force that center pillar winding 10 produces is cancelled out each other.In like manner, transformer secondary winding is also cancelled out each other because of the induced electromotive force that center pillar winding 10 produces, so inductor has no effect.Thereby transformer and inductor have been realized decoupling zero.
The first side column winding 11, the second side column winding 12, the 3rd side column winding 13 and the 4th side column winding 14 have formed former limit winding and the secondary winding of transformer, and center pillar winding 10 is inductor winding.Because inductor winding is positioned on center pillar, the part winding of transformer primary, secondary is wrapped on a side column, remaining former and deputy limit winding is wrapped on another side column, the magnetic flux that inductor winding produces can be through the magnetic circuit of transformer, thereby core material is fully used, reduces core volume.
This magnet integrate construction also can integrated differential mode and common-mode inductor.Now, the first side column winding 11, the second side column winding 12, the 3rd side column winding 13 and the 4th side column winding 14 are common-mode inductor winding, and center pillar winding 10 is differential mode inductance device windings.Under common application scenario, common mode inductance winding does not produce direct current biasing magnetic flux substantially, and can there is certain direct current biasing magnetic flux in differential mode inductance winding, the invention has the advantages that, the magnetic flux that differential mode inductance winding produces can pass through common mode inductance part, thereby whole magnetic core is fully used, reduce the volume of filter, and common-mode inductor and the decoupling zero of differential mode inductance device, both can adjust separately, are independent of each other.
In the present embodiment, the first air gap 16, interstice 17 and the 3rd air gap 18 also can equal zero.
Fig. 3 is the structural representation of the magnet integrate construction of second embodiment of the invention, same take it as transformer and the magnet integrate construction of inductor describe as example.This magnet integrate construction also comprises " day " font closed magnetic core of lying low identical with the first embodiment, and " day " font closed magnetic core that this lies low is by E type magnetic core 2201 and I type magnetic core 2101 is overlapped forms.
On the center pillar of " day " shaped magnetic core, being wound around inductor winding is center pillar winding 1001, on a side column of " day " font, be wound around i.e. the first side column winding 1101 and i.e. the second side column winding 1201 and the hexagonal column winding 1501 of some transformers secondary winding of part transformer primary side winding, the transformer primary of remainder, secondary winding i.e. the 3rd side column winding 1301, the 4th side column winding 1401 and hexagonal column winding 1901 are wrapped on the another one side column of " day " shaped magnetic core, one end of one end of the first side column winding 1101 and the 3rd side column winding 1301 interconnects, make two windings become forward coupled relation, the first side column winding 1101 and the 3rd side column winding 1301 form transformer primary side winding, one end of one end of the second side column winding 1201 and the 4th side column winding 1401 interconnects, and makes two windings also become forward coupled relation, and the second side column winding 1201 and the 4th side column winding 1401 form first secondary winding of transformer, the 5th one end of side column winding 1501 and one end of hexagonal column winding 1901 interconnect, and make two windings become forward coupled relation, and the 5th side column winding 1501 and hexagonal column winding 1901 form second secondary winding of transformer.
Air gap on winding center pillar and side column is from left to right respectively the first air gap 1601, the 3rd air gap 1801 and interstice 1701, and these three air gaps can equal zero.Regulate side column umber of turn and air gap etc., make transformer and inductor realize decoupling zero.
What the present embodiment was different from the first embodiment is that transformer has had more one group of secondary winding, within the scope of the invention, can also have the secondary winding of more groups.Equally, the present embodiment also can be for structure common mode inductance and the poor magnet integrate construction of touching inductance.
Fig. 4 is the structural representation of the magnet integrate construction of third embodiment of the invention, same take it as transformer and the magnet integrate construction of inductor describe as example.This magnet integrate construction has " day " font closed magnetic core equally, and different is that this magnetic core is that an E type magnetic core 2202 forms in the relative mode of opening with the 2nd E shape magnetic core 2302 by two E shape magnetic cores.
On the center pillar of " day " shaped magnetic core, being wound around inductor winding is center pillar winding 1002, on a side column of " day " font, be wound around i.e. the first side column winding 1102 and i.e. the second side column winding 1202 and the 5th side column winding 1502 of some transformers secondary winding of part transformer primary side winding, the transformer primary of remainder, secondary winding i.e. the 3rd side column winding 1302, the 4th side column winding 1402 and hexagonal column winding 1902 are wrapped on the another one side column of " day " shaped magnetic core, one end of one end of the first side column winding 1102 and the 3rd side column winding 1302 interconnects, make two windings become forward coupled relation, the first side column winding 1102 and the 3rd side column 1302 form transformer primary side winding, one end of one end of the second side column winding 1202 and the 4th side column winding 1402 interconnects, and makes two windings also become forward coupled relation, and the second side column winding 1202 and the 4th side column winding 1402 form first secondary winding of transformer, the 5th one end of side column winding 1502 and one end of hexagonal column winding 1902 interconnect, and make two windings become forward coupled relation, and the 5th side column winding 1502 and hexagonal column winding 1902 form second secondary winding of transformer.
Air gap on winding side column and center pillar is from left to right respectively the first air gap 1602, the 3rd air gap 1802 and interstice 1702, and these three air gaps can equal zero.Regulate side column umber of turn and air gap etc., make transformer and inductor realize decoupling zero.
The present embodiment has had more one group of secondary winding than the transformer of the first embodiment, within the scope of the invention, can also have the secondary winding of more groups.Equally, the present embodiment also can be for structure common mode inductance and the poor magnet integrate construction of touching inductance.
Magnet integrate construction of the present invention has different structures or distortion within the scope of the invention, and in the time being applied to integrated transformer and inductor, the magnetic flux that inductor winding produces can, through the magnetic circuit of transformer, can make full use of core material, reduces core volume.When being applied to integrated common mode inductance and poor while touching inductance, the magnetic flux that differential mode inductance winding produces can pass through common mode inductance part, thereby whole magnetic core is fully used, reduce the volume of filter, and common-mode inductor and the decoupling zero of differential mode inductance device, both can adjust separately, are independent of each other.
The above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.Person skilled in the art obviously can easily make various modifications to these embodiment, and General Principle described herein is applied in other embodiment and needn't passes through performing creative labour.Therefore, the invention is not restricted to the embodiment here, those skilled in the art are according to announcement of the present invention, and not departing from the improvement that category of the present invention makes and revise all should be within protection scope of the present invention.
Claims (10)
1. a magnet integrate construction, is characterized in that: comprise " day " shaped magnetic core of lying low, be wound in the first side column winding and the second side column winding on the side column of described " day " shaped magnetic core left side, be wound in the 3rd side column winding and the 4th side column winding on side column on the right of described " day " shaped magnetic core and be wound in described in center pillar winding on " day " shaped magnetic core center pillar;
One end of the first side column winding is connected with one end of the 3rd side column winding, and forward coupling; One end of the second side column winding is connected with one end of the 4th side column winding, and forward coupling.
2. magnet integrate construction according to claim 1, is characterized in that: on described left side side column and described left side side column, the equivalent magnetic resistance of winding equals the equivalent magnetic resistance of winding on described the right side column and described the right side column.
3. magnet integrate construction according to claim 1, is characterized in that: the number of turn of the first winding equals the number of turn of the tertiary winding; The number of turn of the second winding equals the number of turn of the 4th winding.
4. magnet integrate construction according to claim 1, is characterized in that: left side side column, center pillar and the right side column of described magnetic core has the first air gap, interstice and the 3rd air gap.
5. magnet integrate construction according to claim 4, is characterized in that: the first air gap, interstice and the 3rd air gap equal zero.
6. magnet integrate construction according to claim 1, is characterized in that: described in " day " shaped magnetic core of lying low comprise the E type magnetic core that Open Side Down and the I type magnetic core lying low.
7. magnet integrate construction according to claim 1, is characterized in that: described magnet integrate construction also comprises the n group winding being wound on the side column of the described left side and is wound in the n group winding on the side column of described the right; Described n is more than or equal to 1;
Described be wound in n on the side column of left side group winding with described in to be wound in n group winding on the side column of the right corresponding one by one, one end of winding connection described in corresponding two groups, and forward is coupled.
8. magnet integrate construction according to claim 7, is characterized in that: on described left side side column and described left side side column, the equivalent magnetic resistance of winding equals the equivalent magnetic resistance of winding on described the right side column and described the right side column.
9. magnet integrate construction according to claim 7, is characterized in that: the equal turn numbers of winding described in two groups of described correspondence.
10. magnet integrate construction according to claim 1, is characterized in that: described in " day " shaped magnetic core of lying low comprise two E type magnetic cores that opening is relative.
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| CN104300802A (en) * | 2014-07-14 | 2015-01-21 | 南京航空航天大学 | Single-stage boost inverter with magnetic integration transformer |
| CN107134358A (en) * | 2016-02-26 | 2017-09-05 | 艾默生网络能源有限公司 | A kind of inductance winding method and device |
| CN107424766A (en) * | 2017-05-12 | 2017-12-01 | 广东美信科技股份有限公司 | A kind of integrated form network filtering device |
| CN107887147A (en) * | 2017-12-26 | 2018-04-06 | 天津光电润达电子有限公司 | A kind of magnetic integrated transformer and processing method |
| CN107946046A (en) * | 2017-12-19 | 2018-04-20 | 东莞铭普光磁股份有限公司 | A kind of two-phase coupling inductor and power supply |
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| CN110581003A (en) * | 2019-09-12 | 2019-12-17 | 南京航空航天大学 | Transformer and inductance magnetism integrated configuration |
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| US11742139B2 (en) | 2017-11-25 | 2023-08-29 | Huawei Technologies Co., Ltd. | Current transformer |
| CN108039267A (en) * | 2017-11-25 | 2018-05-15 | 华为数字技术（苏州）有限公司 | Current transformer |
| CN108039267B (en) * | 2017-11-25 | 2019-10-25 | 华为数字技术（苏州）有限公司 | Current transformer |
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| US11621254B2 (en) | 2020-01-08 | 2023-04-04 | Delta Electronics (Shanghai) Co., Ltd. | Power supply system |
| US11812545B2 (en) | 2020-01-08 | 2023-11-07 | Delta Electronics (Shanghai) Co., Ltd | Power supply system and electronic device |
| US11876084B2 (en) | 2020-01-08 | 2024-01-16 | Delta Electronics (Shanghai) Co., Ltd. | Power supply system |
| CN111508686A (en) * | 2020-04-14 | 2020-08-07 | 北京动力源新能源科技有限责任公司 | Filter inductor, filter and method for sampling current based on filter inductor |
| CN111430139A (en) * | 2020-05-12 | 2020-07-17 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Inductance array structure capable of being effectively integrated and mounted and implementation method |
| CN111430139B (en) * | 2020-05-12 | 2024-05-24 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Inductance array structure capable of being effectively integrated and installed and implementation method |
| WO2022088178A1 (en) * | 2020-11-02 | 2022-05-05 | Telefonaktiebolaget Lm Ericsson (Publ) | Integrated magnetic device and filter circuit |
| CN113809904A (en) * | 2021-09-28 | 2021-12-17 | 天津大学 | Matrix transformer based on LLC resonant converter topology magnetic integration |
| CN113809904B (en) * | 2021-09-28 | 2024-03-29 | 天津大学 | Matrix transformer based on LLC resonant converter topology magnetic integration |
| CN115360922A (en) * | 2022-08-08 | 2022-11-18 | 威胜电气有限公司 | Magnetic integration design method of push-pull converter |
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Application publication date: 20140618 |