CN106057431A - Magnetic integrated device and power conversion circuit - Google Patents
Magnetic integrated device and power conversion circuit Download PDFInfo
- Publication number
- CN106057431A CN106057431A CN201610087764.8A CN201610087764A CN106057431A CN 106057431 A CN106057431 A CN 106057431A CN 201610087764 A CN201610087764 A CN 201610087764A CN 106057431 A CN106057431 A CN 106057431A
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- Prior art keywords
- magnetic
- integrated device
- core
- coil
- circuit
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Classifications
-
- 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
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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
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
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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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0064—Magnetic structures combining different functions, e.g. storage, filtering or transformation
Abstract
The invention discloses a magnetic integrated device and a power conversion circuit. The magnetic integrated device comprises a magnetic core assembly, wherein N closed frames shaped like a Chinese character 'ri', which are closely arranged side by side, are formed on the magnetic core assembly; an air gap is arranged in a center post of each closed frame shaped like the Chinese character 'ri'; a coil is wound on each center post; phases of coil current on the center posts of the N closed frames shaped like the Chinese character 'ri' are gradually increased or reduced from head to tail; a phase difference between the coil current on the center posts of two adjacent closed frames shaped like the Chinese character 'ri' is 360/N degrees; and N is a natural number greater than 1. By the magnetic integrated device and the power conversion circuit, the volume of the magnetic integrated device can be reduced; and the magnetic core loss of the magnetic integrated device can be reduced.
Description
Technical field
The present invention relates to integrated magnetic field, particularly relate to a kind of magnetic integrated device and circuit for power conversion.
Background technology
Along with switching device and the development of soft switch technique, people generally use the way improving operating frequency
Realizing the miniaturization of Switching Power Supply, but be affected by the restriction of magnetic device characteristic, the method for high frequency has one
Settle finally sex-limited.Because raising operating frequency, the core loss of magnetic device can be made to dramatically increase, so
During high-frequency work, the magnetic core of magnetic device volume to be dropped uses, and the work magnetic of magnetic core is close saturated much smaller than it
Magnetic is close, limits the further reduction of magnetic device volume.In order to enable to reduce further the body of magnetic device
Long-pending, weight and loss, improve magnetic part performance, and people have studied integrated magnetic, and are applied to electricity
In the design of power electro-magnetic device.
The integrated two aspect implications that actually comprise of magnetic device: one is by integrated for multiple separate magnetic element
On a core structure, make full use of each magnetic part voltage in physical circuit topology, current relationship
And magnetic flux in Magnetic circuit topologies, magnetic potential relation, it is achieved multiple magnetic parts integrated, to reduce volume, carry
The power density of high Switching Power Supply, reduction loss, improvement output filter effect, such as by two or more
Inducer is wound on a magnetic core.Two is to be combined with wiring board by magnetics, such as directly by magnetic part
Winding manufactures in the circuit board, uses thick film technology by first-class at silicon chip to magnetic core and winding manufacture.
The integrated object of existing magnetic part mainly has transformator and transformator, inductance and an inductance, transformator with
Inductance.And it is presently mainly more with inductance with transformator, transformator for transformator, such as, will become
The secondary of depressor merges with inductance, reduces cost and copper loss.And for the integrated phase of magnetic part of inductance with inductance
To less, and usually use the magnetic cores such as EE, EFD to realize independent magnetic integrated device, be applied to many
Time in road parallel connection LLC circuit, multiple independent magnetic integrated device parallel connections can only be realized.Obviously, this collection
Device volume after one-tenth mode is integrated is the biggest, can take the biggest space, meanwhile, this structure
Magnetic integrated device, works alone in multi-channel parallel LLC circuit, it is difficult to reduce the core loss (ferrum of circuit
Damage).
Summary of the invention
Present invention is primarily targeted at a kind of magnetic integrated device of offer, it is intended to reduce the body of magnetic integrated device
Amass and reduce the core loss of magnetic integrated device.
For achieving the above object, the present invention proposes a kind of magnetic integrated device, and this magnetic integrated device includes being formed
There are the core assembly of N number of " day " font closure frame side by side and against setting, each described " day "
It is provided with air gap on the center pillar of font closure frame；Coil it is wound with on each described center pillar, described N number of
The phase place of the coil current on the center pillar of " day " font closure frame is confessed one's crime to tail and is incremented by or successively decreases, and
The phase contrast of the coil current on the center pillar of " day " font closure frame described in adjacent two is 360/N degree；Its
In, described N is the natural number more than 1.
Preferably, described core assembly includes N number of E type magnetic core and an I type magnetic core, opening court
N-1 E type magnetic core, one I type magnetic core and an opening to vertically top are towards vertically
The E type magnetic core of lower section is sequentially stacked, from bottom to top to constitute described N number of " day " font closure frame
Core assembly.
Preferably, described core assembly includes N number of E type magnetic core and an I type magnetic core, N number of opens
Mouth is sequentially stacked from bottom to top towards E type magnetic core and the one I type magnetic core of vertically top, with
Constitute the core assembly of described N number of " day " font closure frame.
Preferably, at described N more than 1, and during less than or equal to 3, the coil on center pillar described in adjacent two
Sense of current is contrary.
Preferably, when described N is more than or equal to 5, the direction phase of the coil current on each described center pillar
With.
Additionally, the present invention also provides for a kind of circuit for power conversion, this circuit for power conversion includes as mentioned above
Magnetic integrated device；Described magnetic integrated device includes being formed N number of side by side and against " day " word arranged
The core assembly of type closure frame, the center pillar of each described " day " font closure frame is provided with air gap；
Coil, the coil on the center pillar of described N number of " day " font closure frame it is wound with on each described center pillar
The phase place of electric current is confessed one's crime to tail and is incremented by or successively decreases, and in " day " font closure frame described in adjacent two
The phase contrast of the coil current on post is 360/N degree；Wherein, described N is the natural number more than 1.
Preferably, described circuit for power conversion also includes that N is in parallel circuit, described magnetic integrated device every
On center pillar described in, the power input of coil accesses the phase branch road that described N is in parallel in circuit, described
The current phase that N is in parallel in each phase branch road of circuit is identical with the current phase of the coil of corresponding connection.
The present invention by be provided be formed N number of side by side and against arrange " day " font closure frame
Core assembly, the center pillar of each described " day " font closure frame is provided with air gap；This magnetic core
Assembly formed N-1 common magnetic circuit, compared with existing stand-alone integrated device, realize same amount of
During inductance, decrease overall volume by shared magnetic circuit；Further, each described center pillar is wound with coil,
The phase place of the coil current on the center pillar of described N number of " day " font closure frame confess one's crime to tail be incremented by or
Successively decrease, and the phase contrast of the coil current on the center pillar of " day " font closure frame described in adjacent two is 360/N
Degree, it is identical or contrary for so can arranging the sense of current of adjacent two coils according to integrated number,
And then the magnetic flux in both common magnetic circuit is cut down, thus reduce core loss.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other according to the structure shown in these accompanying drawings
Accompanying drawing.
Fig. 1 is the structural representation of magnetic integrated device one embodiment of the present invention；
Fig. 2 is the structural representation of magnetic another embodiment of integrated device of the present invention；
Fig. 3 is the equivalent magnetic circuit figure of magnetic integrated device of the present invention；
Fig. 4 is the core loss simulation waveform figure of the magnetic integrated device shown in Fig. 1；
Fig. 5 is the core loss simulation waveform figure of independent magnet device；
Fig. 6 is the core loss simulation waveform figure of the magnetic integrated device shown in Fig. 2；
Fig. 7 is the three road crisscross parallel LLC electrical block diagrams realized based on magnetic integrated device of the present invention.
Drawing reference numeral illustrates:
| Label | Title |
| 10 | Core assembly |
| 11 | Center pillar |
| 12 | Coil |
| 13 | Air gap |
| 101 | E type magnetic core |
| 102 | I type magnetic core |
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, do referring to the drawings further
Explanation.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention,
Rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having
Make the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
It is to be appreciated that directional instruction in the embodiment of the present invention (such as upper and lower, left and right, front,
After ...) it is only used for explanation phase para-position under a certain particular pose (as shown in drawings) between each parts
Putting relation, motion conditions etc., if this particular pose changes, then directionality instruction is the most corresponding
Ground changes therewith.
It addition, the description relating to " first ", " second " etc. in the present invention is only used for describing purpose, and can not
It is interpreted as instruction or implies its relative importance or the implicit quantity indicating indicated technical characteristic.By
This, define " first ", the feature of " second " can express or implicitly include at least one this feature.
It addition, the technical scheme between each embodiment can be combined with each other, but must be common with this area
Based on technical staff is capable of, when technical scheme combination occur conflicting maybe cannot realize time should
When thinking that the combination of this technical scheme does not exists, the most not within the protection domain of application claims.
The present invention proposes a kind of magnetic integrated device.
Referring to figs. 1 through Fig. 3, in embodiments of the present invention, this magnetic integrated device include being formed N number of also
Row and the core assembly 10 against " day " the font closure frame arranged, the core assembly 10 of this structure
There is N number of center pillar 11 and N-1 common magnetic circuit, such as magnetic circuit G1 and G2 in Fig. 1.Wherein, each
It is wound with on coil 12, and each described center pillar 11 on the center pillar 11 of described " day " font closure frame
Being additionally provided with air gap 13, air gap 13 magnetic resistance is big, is possible to prevent magnetic saturation, reduces pcrmeability, so not
Reach magnetic core saturated on the premise of, the most N number of independent inductance of coil 12 on N number of center pillar 11, its
Middle air gap 13 is with so that the inductance value of coil 12 on N number of center pillar 11 is equal.Obviously, this structure
Core assembly 10 when realizing same amount of inductance, decrease overall volume by shared magnetic circuit.
Additionally, in order to reduce core loss, on the center pillar 11 of described N number of " day " font closure frame
The phase place of coil 12 electric current is confessed one's crime to tail and is incremented by or successively decreases, and " day " font Guan Bi frame described in adjacent two
The phase contrast of coil 12 electric current on the center pillar 11 of frame is 360/N degree；Wherein, described N is more than 1
Natural number.Such as shown in Fig. 1, when " day " font closure frame is three, then first " day "
The phase place of coil 12 electric current on the center pillar 11 of font closure frame is 0 degree, and second is 120 degree,
3rd is 240 degree, or it is believed that line on the center pillar 11 of first " day " font closure frame
The phase place enclosing 12 electric currents is 360 degree, and second is 240 degree, and the 3rd is 120 degree.
It should be noted that the magnetic circuit that above-mentioned core assembly 10 is formed is low reluctance magnetic circuit, the magnetic in air gap
Resistance is much larger than the magnetic resistance in magnetic circuit, by providing low reluctance magnetic circuit to realize decoupled integration.As shown in Figure 3
The equivalent magnetic circuit of magnetic integrated device, the magnetic resistance R that the air gap 13 of center pillar 11 produces is much larger than the magnetic resistance of loop.
The excitation of input is sinusoidal variations, and magnetic potential Φ of generation is also in sinusoidal variations, and adjacent winding produces
There is superposition in raw magnetic flux in common magnetic circuit, affects core loss.When two adjacent windings generations
When magnetic direction is identical, decouple for forward；When the magnetic direction that two adjacent windings produce is contrary,
For reversely decoupling.When there is phase contrast in its coil current between two adjacent coils 12, the magnetic flux of generation
Superposition or reduction can occur in common magnetic circuit, and affect core loss, wherein magnetic flux then has when cutting down
It is beneficial to the reduction of core loss.And suitable phase contrast is set, then so that the electricity of adjacent two coils 12
Flow path direction is identical or contrary, and then the magnetic flux in both common magnetic circuit is cut down, i.e. by anti-
Realize reducing core loss to the mode of decoupling.
Wherein, " day " font closure frame of corresponding varying number can be passed through, relative set coil 12
Direction of winding, in order to when the power input of each coil 12 inputs the electric current of corresponding phase, it is possible to
Make the current and phase difference in adjacent two coils 12 suitable, to reduce core loss.
The present embodiment, need to further illustrate, due at the center pillar 11 of magnetic core added with air gap 13, both sides
Magnetic post be not added with air gap 13, the magnetic core magnetic circuit of formation is low reluctance magnetic circuit, and the magnetic resistance in air gap 13 is much larger than
Magnetic resistance in magnetic circuit, by providing low reluctance magnetic circuit to realize decoupled integration.It is illustrated in figure 3 multiple " day "
The equivalent magnetic circuit of the magnetic integrated device that the core assembly 10 of font closure frame is constituted, center pillar 11 air gap 13
The magnetic resistance (R1, R2 ... Rn) produced is much larger than the magnetic resistance of loop.When the excitation sinusoidal variations of input,
Magnetic potential Φ produced is also in sinusoidal variations, and the magnetic flux that adjacent coil 12 produces is sent out in common magnetic circuit
Raw superposition, due in opposite direction, magnetic flux is mutually cut down, then can reduce core loss.
It is noted that when N number of different coils 12 are integrated, when there is phase contrast in the excitation of input, magnetic
The flux change on road becomes complicated, by adjusting the flow direction of coil 12 electric current, can reduce largely
The core loss of common magnetic circuit.Specifically, at described N more than 1, and during less than or equal to 3, phase is set
Coil 12 sense of current on center pillar 11 described in adjacent two is contrary, can reach more preferable effect.Such as Fig. 1
Shown in, in Fig. 1, N is equal to 3, is formed with common magnetic circuit G1 and G2, it is assumed that this magnetic integrated device edge
Three coils 12 in G1 to G2 direction are divided into first coil the 12, second coil 12 and tertiary coil 12,
The then exciting current phase 120 degree between first coil 12 and the second coil 12, the second coil 12
And the exciting current phase 120 between tertiary coil 12, then tertiary coil 12 and first coil 12
Between exciting current phase place be equivalent to differ 240 degree.Owing in common magnetic circuit G1 and G2, magnetic flux is sent out
Raw superposition, result be to have influence on the loss of magnetic core.Simulation analysis is carried out by finite element software, it was demonstrated that
This embodiment to reducing the effect of core loss, the core loss of magnetic integrated device as shown in Figure 4
Meansigma methods is about about 1.75 million, and the core loss of the core loss of independent magnet device in Fig. 5
Meansigma methods is about about 1.50 million, it is clear that the core loss of the magnetic integrated device of application the present embodiment is bright
Aobvious minimizing.
Additionally, when described N is more than or equal to 5, arrange coil 12 electric current on each described center pillar 11
Direction identical, more preferable effect can be reached.As in figure 2 it is shown, be 5 " day " font closure frames
Core assembly 10.Become to have common magnetic circuit G1, G2, G3, G4, it is assumed that this magnetic integrated device is along G1
Five coils 12 to G4 direction be divided into first coil the 12, second coil 12, tertiary coil 12,
Four coil 12 and the 5th coils 12, then the exciting current phase place between the second coil 12 and first coil 12
Differ 72 degree, the exciting current phase 72 degree between tertiary coil 12 and the second coil 12, the
Exciting current phase between four coils 12 and tertiary coil 12 72 degree, the 5th coil 12 and
Exciting current phase between four coils 12 72 degree.Due to common magnetic circuit G1, G2, G3,
Magnetic flux generation superposition in G4, then influence whether the loss of magnetic core.Simulation analysis is carried out by finite element software,
Demonstrating the effect to reduction core loss of this embodiment, the magnetic core of magnetic integrated device as shown in Figure 6 damages
The meansigma methods of consumption is about about 2.00 million, and in Fig. 5, the magnetic core of the core loss of independent magnet device damages
The meansigma methods of consumption is about about 1.50 million, it is clear that the magnetic core of the magnetic integrated device of application the present embodiment damages
Consumption significantly reduces.
To sum up, compared with prior art, it is an advantage of the current invention that one side will be many by shared magnetic circuit
Individual magnetic device is combined, and reduces the overall volume of magnetic device, on the other hand passes through design lines
Circle 12 excitation input form, reduces core loss largely.
In above-described embodiment, core assembly 10 can be by any " day " font closure frame of can make up
Sub-magnetic core realizes, and in the present embodiment, core assembly 10 may be accomplished by, with reference to Fig. 1 and Tu
2, core assembly 10 includes N number of E type magnetic core 101 and an I type magnetic core 102, opening towards
Vertically N-1 E type magnetic core 101 of top, one I type magnetic core 102 and opening towards
Vertically the E type magnetic core 101 of lower section is sequentially stacked, from bottom to top to constitute described N number of " day " font
The core assembly 10 of closure frame.
As it is shown in figure 1, two openings are towards 101, I type magnetic core of E type magnetic core of vertically top
102 be sequentially stacked from bottom to top towards the E type magnetic core 101 of vertically lower section with an opening together with, shape
Becoming the core assembly 10 of three " day " font closure frames, the side column of E type magnetic core 101 does not open air gap
13, form the magnetic circuit of closed-loop path more than.Only on the center pillar 11 of three " day " font closure frames
Arranging air gap 13, the inductance value making three coils 12 is equal.The most preferably it is adjacent at center pillar 11
One end of another sub-magnetic core arranges air gap 13, in order to be wound around coil 12.It is understood that utilize many
Individual E type magnetic core 101 and I type magnetic core 102 cooperation realize adjacent two inductance coils 12 and share
One magnetic circuit, decreases the overall volume of core assembly 10.When needs arrange more, the most further
Setting up the opening E type magnetic core 101 towards vertically top, such as, magnetic as shown in Figure 2 is integrated
In device, by four openings towards 101, I type magnetic core 102 and of E type magnetic core of vertically top
One opening is sequentially stacked together from bottom to top towards the E type magnetic core 101 below vertically, forms five
The core assembly 10 of individual " day " font closure frame.
In this embodiment, it should be noted that its core assembly 10 can also replace reality in the following manner
Existing, specifically, described core assembly 10 includes N number of E type magnetic core 101 and an I type magnetic core
102, N number of opening towards the E type magnetic core 101 of vertically top and one I type magnetic core 102 from
Lower and on be sequentially stacked, to constitute the core assembly 10 of described N number of " day " font closure frame.This
Mode is basically identical with the implementation of above-mentioned core assembly 10, is all by E type magnetic core 101 and
Individual I type magnetic core 102 coordinates realization, and except for the difference that, in the present embodiment, I type magnetic core 102 is arranged on
Outermost.
It should be noted that this magnetic integrated device of above two structure is by N number of E type magnetic core 101 He
One sub-magnetic core of I shape integrates independent magnet device (the independent magnetic with equal number by shared magnetic circuit
Property device be usually that an E type magnetic core 101 and an I type magnetic core 102 is stacked to be constituted) compare,
N-1 I type magnetic core 102 can be decreased.
The present invention also proposes a kind of circuit for power conversion, and in conjunction with Fig. 1 to Fig. 7, this circuit for power conversion includes
Above-mentioned magnetic integrated device, the concrete structure of this circuit for power conversion is with reference to above-described embodiment, due to the present invention
Circuit for power conversion have employed whole technical schemes of above-mentioned all embodiments, the most at least has above-mentioned reality
Executing all beneficial effects that the technical scheme of example is brought, this is no longer going to repeat them.
Further, above-mentioned circuit for power conversion also includes that N is in parallel circuit, described magnetic integrated device
The phase that on each described center pillar 11, the power input described N of access of coil 12 is in parallel in circuit is propped up
Road, the electricity of the current phase that described N is in parallel in each phase branch road of circuit and the coil 12 of corresponding connection
Stream phase place is identical.Further, the outfan of the coil 12 on each described center pillar 11 is connected to transformator pair
The input answered.
Specifically, as it is shown in fig. 7, be three-phase crisscross parallel LLC circuit, each phase branch road is to having one
Input power, respectively Vin1, Vin2, Vin3, is carried out through metal-oxide-semiconductor, diode and electric capacity accordingly
After process, output is to the power input of corresponding coil 12, need to ensure, three-phase crisscross parallel LLC
The electric current of the current phase in each phase branch road of circuit and three coils Lr1, Lr2, Lr3 of corresponding connection
Phase place is identical, and wherein, the sense of current in the adjacent legs of three-phase crisscross parallel LLC circuit is contrary, magnetic
The outfan of integrated device respectively with primary coil Lr1, Lr2, Lr3 one_to_one corresponding of three transformator T1
Connect, export from public output V0 after the parallel connection of secondary windings of three transformator T1.
The foregoing is only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention,
Every under the inventive concept of the present invention, utilize the equivalent structure that description of the invention and accompanying drawing content are made
Conversion, or directly/be indirectly used in other relevant technical fields and be included in the patent protection model of the present invention
In enclosing.
Claims (7)
1. a magnetic integrated device, it is characterised in that include being formed N number of side by side and against arranging
The core assembly of " day " font closure frame, the center pillar of each described " day " font closure frame sets
It is equipped with air gap；Coil it is wound with, in described N number of " day " font closure frame on each described center pillar
The phase place of the coil current on post is confessed one's crime to tail and is incremented by or successively decreases, and described in adjacent two, " day " font is closed
The phase contrast closing the coil current on the center pillar of framework is 360/N degree；Wherein, described N is more than 1
Natural number.
2. magnetic integrated device as claimed in claim 1, it is characterised in that described core assembly includes N
Individual E type magnetic core and an I type magnetic core, opening towards vertically top N-1 E type magnetic core,
One I type magnetic core and an opening are folded the most successively towards the E type magnetic core below vertically
Put, to constitute the core assembly of described N number of " day " font closure frame.
3. magnetic integrated device as claimed in claim 1, it is characterised in that described core assembly includes N
Individual E type magnetic core and an I type magnetic core, N number of opening is towards the E type magnetic core of vertically top and institute
State an I type magnetic core to be sequentially stacked from bottom to top, to constitute described N number of " day " font closure frame
Core assembly.
4. the magnetic integrated device as described in any one of claims 1 to 3, it is characterised in that at described N
More than 1, and during less than or equal to 3, the coil current on center pillar described in adjacent two in opposite direction.
5. magnetic integrated device as claimed in claim 4, it is characterised in that at described N more than or equal to 5
Time, the direction of the coil current on each described center pillar is identical.
6. a circuit for power conversion, it is characterised in that include as described in any one of claim 1 to 5
Magnetic integrated device.
7. circuit for power conversion as claimed in claim 6, it is characterised in that described circuit for power conversion
Also include that N is in parallel circuit, the power input of coil on each described center pillar of described magnetic integrated device
Accessing the phase branch road that described N is in parallel in circuit, described N is in parallel in each phase branch road of circuit
Current phase is identical with the current phase of the coil of corresponding connection.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610087764.8A CN106057431A (en) | 2016-02-16 | 2016-02-16 | Magnetic integrated device and power conversion circuit |
| PCT/CN2017/073145 WO2017140225A1 (en) | 2016-02-16 | 2017-02-09 | Magnetic integrated device and power conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610087764.8A CN106057431A (en) | 2016-02-16 | 2016-02-16 | Magnetic integrated device and power conversion circuit |
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| CN106057431A true CN106057431A (en) | 2016-10-26 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610087764.8A Pending CN106057431A (en) | 2016-02-16 | 2016-02-16 | Magnetic integrated device and power conversion circuit |
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| CN (1) | CN106057431A (en) |
| WO (1) | WO2017140225A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017140225A1 (en) * | 2016-02-16 | 2017-08-24 | 中兴通讯股份有限公司 | Magnetic integrated device and power conversion circuit |
| CN108364761A (en) * | 2017-01-12 | 2018-08-03 | Det 国际控股有限公司 | Integrated magnet assembly and switch mode power converter |
| CN112927901A (en) * | 2021-03-05 | 2021-06-08 | 深圳市航嘉驰源电气股份有限公司 | Magnetic core structure and device |
| CN113972057A (en) * | 2021-12-13 | 2022-01-25 | 潜润电子科技(苏州)有限公司 | Multi-layer board transformer for series resonance circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110995229B (en) * | 2019-11-15 | 2023-04-25 | 山东航天电子技术研究所 | Hall proximity switch structure |
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| WO2017140225A1 (en) * | 2016-02-16 | 2017-08-24 | 中兴通讯股份有限公司 | Magnetic integrated device and power conversion circuit |
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| WO2017140225A1 (en) | 2017-08-24 |
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