CN106971815B - The power inverter of integrated inductor and the application integrated inductor - Google Patents
The power inverter of integrated inductor and the application integrated inductor Download PDFInfo
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- CN106971815B CN106971815B CN201610023991.4A CN201610023991A CN106971815B CN 106971815 B CN106971815 B CN 106971815B CN 201610023991 A CN201610023991 A CN 201610023991A CN 106971815 B CN106971815 B CN 106971815B
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- 238000004804 winding Methods 0.000 claims abstract description 81
- 230000004907 flux Effects 0.000 claims description 22
- 239000000696 magnetic material Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 7
- 239000011162 core material Substances 0.000 description 29
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002224 dissection Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- -1 iron aluminum silicon Chemical compound 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011863 silicon-based powder Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
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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
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/045—Fixed inductances of the signal type with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
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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
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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
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
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- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention provides a kind of integrated inductor, including magnetic core and N number of winding, and the magnetic core includes the first magnetic pole, N number of second magnetic pole and the first magnetic yoke and the second magnetic yoke that are set to second magnetic pole both ends；First magnetic pole and N number of second magnetic pole difference parallel interval setting, first magnetic pole are equal with the spacing of each second magnetic pole；One end of second magnetic pole is connect by first magnetic yoke with one end of first magnetic pole, and the other end of second magnetic pole is connect by second magnetic yoke with the other end of first magnetic pole；N number of winding is set to correspondingly in N number of second magnetic pole；Wherein, N is the integer more than or equal to 2.In addition, the present invention also provides a kind of power inverters using the integrated inductor.The integrated inductor can reduce the volume and weight of the power inverter, reduce magnetic loss, the efficiency of hoisting power converter.
Description
Technical field
The present invention relates to power conversion technology field more particularly to a kind of integrated inductor and the function of the application integrated inductor
Rate converter.
Background technique
In power inverter, ripple current can reduce using interleaving technique, only the lesser filter capacitor of need is
The ripple current requirement of power inverter can be met, can significantly reduce the cost of filter capacitor, and hoisting power converter
Efficiency.For example, smaller ripple current means smaller ripple voltage in photovoltaic DC-to-AC converter, maximum can be effectively improved
Power points tracks the voltage sample precision of (Maximum Power Point Tracking, MPPT) controller, promotes inverter
Efficiency.
Power inverter using staggeredly correlation technology includes multiple power bridge arms in parallel, multiple power bridge arms with it is multiple
Discrete inductance connects one to one, and runs in an interleaved manner.However, after carrying out crisscross parallel using discrete inductance, together
Required filter inductance number doubles under constant power, and the production cost of power inverter is caused to rise；Simultaneously as filter
The increase of wave inductance number causes production hour to increase so that the assembling procedure of power inverter is more complicated；Furthermore it is adopting
In the power inverter for carrying out crisscross parallel with discrete inductance, each inductance bears identical weber, so that the magnetic loss of inductance increases
Greatly, it is unfavorable for the efficiency of hoisting power converter.
Summary of the invention
The present invention provides a kind of integrated inductor, to reduce power inverter volume and weight, reduces the magnetic loss of inductance, is promoted
The efficiency of power inverter.
In addition, the present invention also provides a kind of power inverters using the integrated inductor.
First aspect present invention provides a kind of integrated inductor, including magnetic core and N number of winding, and the magnetic core includes the first magnetic
Column, N number of second magnetic pole and the first magnetic yoke and the second magnetic yoke that are set to second magnetic pole both ends；Wherein, N is to be greater than or wait
In 2 integer；
First magnetic pole and N number of second magnetic pole difference parallel interval setting, first magnetic pole with it is each described
The spacing of second magnetic pole is equal；
One end of second magnetic pole is connect by first magnetic yoke with one end of first magnetic pole, second magnetic
The other end of column is connect by second magnetic yoke with the other end of first magnetic pole；
N number of winding is set to correspondingly in N number of second magnetic pole.
The integrated inductor is by the way that N number of winding to be integrated on a secondary magnetic core, so as to effectively reduce inductance
Volume and weight；Meanwhile N number of winding shares first magnetic pole, so that the low frequency component in magnetic field is described
It cancels out each other in one magnetic pole, only there are radio-frequency components, so as to use low-loss core material, to reduce the integrated electricity
The magnetic loss of sense.
With reference to first aspect, it should be noted that first magnetic yoke is embedded in one end of first magnetic pole, and with it is described
The first contact surface is formed between first magnetic pole；Second magnetic yoke is embedded in the other end of first magnetic pole, and with described first
The second contact surface is formed between magnetic pole；Wherein, by the magnetic flux density of first contact surface with pass through second contact surface
Magnetic flux density it is identical.
Further, the area equation of the first contact surface described in any two, and the second contact surface described in any two
Area equation.
Further, the central axes of first magnetic yoke are perpendicular to first magnetic pole, the area of first contact surface
Greater than first magnetic yoke perpendicular to the cross-sectional area of the central axes；The central axes of second magnetic yoke are perpendicular to described
One magnetic pole, the area of second contact surface are greater than second magnetic yoke perpendicular to the cross-sectional area of the central axes.
By the way that each first magnetic yoke and each second magnetic yoke to be embedded into first magnetic pole, insertion is realized
Connection, can effectively increase the contact surface between each first magnetic yoke and each second magnetic yoke and first magnetic pole
Area, so as to promote the magnetic of the contact surface between every one first magnetic yoke or every one second magnetic yoke and first magnetic pole
Logical capacity reduces by first magnetic pole and magnetically saturated risk occurs.
Further, the central symmetry of first contact surface and second contact surface relative to first magnetic pole.
By the center that corresponding first contact surface of every one second magnetic pole and the second contact surface are arranged with respect to first magnetic pole
Symmetrically, the magnetic flux density by first contact surface and the magnetic flux density phase by second contact surface be thereby may be ensured that
Together.
Further, it first contact surface and is deposited across first magnetic yoke and the magnetic line of force of first magnetic pole
In certain angle；Second contact surface and there are one across second magnetic yoke and the magnetic line of force of first magnetic pole
Fixed angle.
Further, first contact surface and second contact surface are L shape curved surface.
Optionally, first contact surface and second contact surface are arc-shaped curved surface.
With reference to first aspect, it should be noted that one end of first magnetic pole is by the first magnetic yoke phase described in any two
Mutually isolation, the other end of first magnetic pole are mutually isolated by the second magnetic yoke described in any two.
By the way that each first magnetic yoke individually to be connect with one end of first magnetic pole, so that described in any two
There is no directly contacts between one magnetic yoke, and each second magnetic yoke is individually connect with the other end of first magnetic pole,
So that also there is no directly contacting between the second magnetic yoke described in any two, so as to realize the solution between N number of winding
Coupling, therefore can adjust respectively the inductance of N number of winding according to the demand of practical application, further, it is also possible to load compared with
Hour, dormant state is set by least one winding in N number of winding, to reduce the power consumption of power inverter.
With reference to first aspect, it should be noted that first magnetic pole is made of the magnetic material of no internal air gap, described
Second magnetic pole, the first magnetic yoke and the second magnetic yoke are by there is the magnetic material of internal air gap to be made；The magnetic conductivity of first magnetic pole is big
In the magnetic conductivity of second magnetic pole, the first magnetic yoke and the second magnetic yoke.
Further, first magnetic pole is made of amorphous, ferrite or silicon steel；Second magnetic pole, the first magnetic yoke and
Second magnetic yoke is made of iron aluminum silicon powder or non-crystalline flour.
Since first magnetic pole is made from the magnetic material that different magnetic conductivities are respectively adopted in second magnetic pole, meanwhile,
First magnetic yoke, the second magnetic yoke are identical as the second magnetic pole material, and the magnetic conductivity of first magnetic pole is greater than described the
The magnetic conductivity of two magnetic poles, the first magnetic yoke and the second magnetic yoke is equivalent to magnetic circuit short circuit, it is hereby achieved that preferably decoupling effect
Fruit.
With reference to first aspect, it should be noted that the magnetic field that the N number of winding generates include low-frequency component and high frequency at
Point, the low-frequency component in the magnetic field is cancelled out each other in first magnetic pole, and the radio-frequency component in the magnetic field retains.
Second aspect of the present invention provides a kind of power inverter, including integrated inductor and N number of switch bridge arm, the integrated electricity
Sense includes magnetic core and N number of winding, and the magnetic core is including the first magnetic pole, N number of second magnetic pole and is set to second magnetic pole two
First magnetic yoke and the second magnetic yoke at end；Wherein, N is the integer more than or equal to 2；
First magnetic pole and N number of second magnetic pole difference parallel interval setting, first magnetic pole with it is each described
The spacing of second magnetic pole is equal；
One end of second magnetic pole is connect by first magnetic yoke with one end of first magnetic pole, second magnetic
The other end of column is connect by second magnetic yoke with the other end of first magnetic pole
；N number of winding is set to correspondingly in N number of second magnetic pole；N number of winding respectively with the N
A switch bridge arm connects one to one.
In conjunction with second aspect, it should be noted that the integrated inductor is to integrate as provided by first aspect present invention
Inductance, the power inverter include underloading operating mode, under the underloading operating mode, in N number of winding at least
One winding is arranged to dormant state.
The power inverter, which passes through, applies the integrated inductor, so as to effectively reduce the body of the power inverter
Long-pending and weight；Simultaneously as being decoupling conjunction state between N number of winding of the integrated inductor, therefore can be according to practical application
Demand adjusts the inductance of N number of winding respectively；Further, it is also possible to which the power inverter is switched when loading smaller
To be lightly loaded operating mode, i.e., dormant state is set by least one winding in N number of winding, described in reducing
The power consumption of power inverter, and the power inverter is promoted in working efficiency at light load.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the structural schematic diagram of integrated inductor provided by one embodiment of the present invention；
Fig. 2 is the waveform diagram of magnetic flux in the magnetic core of integrated inductor shown in Fig. 1；
Fig. 3 is the structural schematic diagram of integrated inductor provided by one embodiment of the present invention；
Fig. 4 is the structural schematic diagram of magnetic core provided by one embodiment of the present invention；
Fig. 5 is the structural schematic diagram of magnetic core provided by one embodiment of the present invention；
Fig. 6 is the structural schematic diagram of integrated inductor provided by one embodiment of the present invention；
Fig. 7 is the structural schematic diagram of integrated inductor provided by one embodiment of the present invention；
The structural schematic diagram of Fig. 8 power inverter provided by one embodiment of the present invention.
Specific embodiment
Below in conjunction with attached drawing, the embodiment of the present invention is described.
In power conversion technology field, it usually needs supply voltage is transformed to what another was needed from a voltage class
Voltage class makes it in function using the power inverter of interleaving technique because of transfer efficiency with higher and power density
Rate converter technique field is widely used.Power inverter using interleaving technique includes parallel with one another multiple
Power-switch arm, the multiple power-switch arm are intercoupled by multiple discrete inductor windings, and with staggeredly side
Formula operation.Currently, in the power inverter using interleaving technique, due to more to realize using multiple discrete inductance windings
The crisscross parallel of a power-switch arm, when power-switch arm increases, required discrete inductance number, which synchronizes, to be increased, and is made
The volume for obtaining power inverter increases, and the magnetic loss of inductance increases, and is unfavorable for the efficiency of hoisting power converter.
The embodiment of the present invention provides a kind of integrated inductor, can be applied to the power inverter using staggeredly correlation technology
In, the integrated inductor is by being arranged two or more discrete windings on a secondary magnetic core, to reduce power inverter
Volume and weight；Meanwhile two or more winding common sparing magnetic cores can reduce so that low-frequency magnetic component is cancelled out each other
The magnetic loss of inductance, the efficiency of hoisting power converter.
The integrated inductor includes magnetic core and N number of winding, and the magnetic core includes the first magnetic pole, N number of second magnetic pole and sets
It is placed in first magnetic yoke and the second magnetic yoke at second magnetic pole both ends；Between first magnetic pole is parallel with N number of second magnetic pole
Every setting, first magnetic pole is equal with the spacing of second magnetic pole；One end of second magnetic pole passes through first magnetic
Yoke is connect with one end of first magnetic pole, and the other end of second magnetic pole passes through second magnetic yoke and first magnetic pole
The other end connection；N number of winding is set to correspondingly in N number of second magnetic pole；Wherein, N is more than or equal to 2
Integer.Wherein, first magnetic pole is made of the magnetic material of no internal air gap, such as amorphous, ferrite, silicon steel etc.；Institute
The second magnetic pole, the first magnetic yoke and the second magnetic yoke are stated by there is the magnetic material of internal air gap to be made, such as iron aluminum silicon powder, non-crystalline flour
Deng；The magnetic conductivity of first magnetic pole is greater than the magnetic conductivity of each second magnetic pole, the first magnetic yoke and the second magnetic yoke.
N number of winding shares first magnetic pole, so that the low frequency component in magnetic field is in first magnetic pole
It cancels out each other, only there are radio-frequency components.Simultaneously as first magnetic pole be the magnetic material without internal air gap, be equivalent to by
Magnetic circuit short circuit；And one end between the first magnetic yoke described in any two by first magnetic pole is mutually isolated, i.e., it is each described
First magnetic yoke is individually connect with one end of first magnetic pole；Pass through first magnetic pole between second magnetic yoke described in any two
The other end it is mutually isolated, i.e., each second magnetic yoke is individually connect with the other end of first magnetic pole；To realize institute
State magnetic loss that is decoupling between N number of winding, and can reduce the integrated inductor.Due to being between N number of winding
Conjunction state is decoupled, therefore the inductance of N number of winding can be adjusted respectively according to the demand of practical application.In addition, actually answering
Used time can also adjust the operating mode of the integrated inductor according to payload size, for example, when loading smaller, it can be by institute
At least one winding stated in N number of winding is set as dormant state, to reduce the power consumption of power inverter.
Referring to Fig. 1, in an embodiment of the invention, providing a kind of integrated inductor 100, including magnetic core 110 and two
Winding 130, the magnetic core 110 include 111, two the second magnetic poles 113 of the first magnetic pole and are set to 113 liang of second magnetic pole
First magnetic yoke 1131 and the second magnetic yoke 1133 at end；First magnetic pole 111 is set with two 113 parallel intervals of the second magnetic pole
It sets, first magnetic pole 111 is equal with the spacing of second magnetic pole 113；One end of second magnetic pole 113 passes through described the
One magnetic yoke 1131 is connect with one end of first magnetic pole 111, and the other end of second magnetic pole 113 passes through second magnetic yoke
1133 connect with the other end of first magnetic pole 111；Two windings 130 are set to two described second correspondingly
In magnetic pole 113.
One first contact surface 1135 is formed between each first magnetic yoke 1131 and one end of first magnetic pole 111,
The area equation of first contact surface 1135 described in any two；Each second magnetic yoke 1133 and first magnetic pole 111
One second contact surface 1137, the area equation of the second contact surface 1137 described in any two are formed between the other end；By each
Corresponding first contact surface 1135 of second magnetic pole 113 is identical with the magnetic flux density of the second contact surface 1137.Wherein, described
Perpendicular to first magnetic pole 111, first contact surface 1135 is first magnetic yoke 1131 for the central axes of one magnetic yoke 1131
Perpendicular to the cross section of the central axes in place of being connect with first magnetic pole 111；The central axes of second magnetic yoke 1133
Perpendicular to first magnetic pole 111, second contact surface 1137 be second magnetic yoke 1133 with first magnetic pole 111
Cross section of the connection place perpendicular to the central axes.
In an embodiment of the invention, described two windings 130 are respectively labeled as the first winding 131 and the second winding
133.Assuming that electric current in first winding 131 is i1, the electric current in second winding 133 is i2, and the electric current i1
It is contrary with electric current i2's, as shown by the arrows in Figure 1, then the magnetic direction and described second that first winding 131 generates
The magnetic direction that winding 133 generates is also opposite.Assuming that passing through corresponding second magnetic pole 113 of first winding 131 and its both ends
The first magnetic yoke 1131 and the second magnetic yoke 1133 magnetic flux be Φ 1, pass through corresponding second magnetic pole of second winding 133
113 and its both ends the first magnetic yoke 1131 and the second magnetic yoke 1133 magnetic flux be Φ 2, then pass through first magnetic pole 111
Magnetic flux is Φ 1- Φ 2.The magnetic direction that is generated due to first winding 131 and second winding 133 is on the contrary, described the
Low frequency in the low-frequency component in magnetic flux phi 1 that one winding 131 generates and the magnetic flux phi 2 of second winding 133 generation
Ingredient is cancelled out each other in first magnetic pole 111, only reserved high-frequency ingredient, as shown in Figure 2.
Referring to Fig. 3, in an embodiment of the invention, the integrated inductor 100 can be set to single channel Working mould
Formula.For example, first winding 131 is accessed electric current i1, and keep second winding 133 hanging, i.e., described second winding
Electric current in 133 is zero.Under single channel operating mode, since only one winding has electric current access, another winding is hanging, from
And the power consumption of the integrated inductor 100 can be reduced.Moreover, it is assumed that passing through corresponding second magnetic pole 113 of first winding 131
And its both ends the first magnetic yoke 1131 and the second magnetic yoke 1133 magnetic flux be Φ 1, then pass through the magnetic flux of first magnetic pole 111
Amount is also Φ 1, is worked at the same time under state relative to multichannel winding, the magnetic flux in first magnetic pole 111 declines to a great extent.Comparison
Fig. 3 and Fig. 1 passes through the magnetic flux of first magnetic pole 111 when single channel operating mode it can also be seen that under identical core cross section
Amount is declined to a great extent when working at the same time relative to multichannel winding by the magnetic flux of first magnetic pole 111.Therefore, first magnetic
Column 111 can use the material of the low saturation flux densities such as ferrite, so that the core loss of the integrated inductor 100 is reduced,
Save cost.
Referring to Fig. 4, in an embodiment of the invention, providing a kind of magnetic core 210, including the first magnetic pole 211, two
Two magnetic poles 213 and the first magnetic yoke 2131 and the second magnetic yoke 2133 for being set to 213 both ends of the second magnetic pole.The magnetic core
210 relative to magnetic core 110 shown in FIG. 1, and difference is: first magnetic yoke 2131 is embedded in one end of first magnetic pole 211,
And the first contact surface 2135 of a L shape curved surface is formed between first magnetic pole 211；Second magnetic yoke 2133 is embedded in described
The other end of first magnetic pole 211, and form between first magnetic pole 211 second contact surface 2137 of a L shape curved surface.It is described
The central symmetry of first contact surface 2135 and second contact surface 2137 relative to first magnetic pole 211.
The central axes of first magnetic yoke 2131 are perpendicular to first magnetic pole 211, the face of first contact surface 2135
Product is greater than first magnetic yoke 2131 perpendicular to the cross-sectional area of the central axes；It hangs down the central axes of second magnetic yoke 2133
Directly in first magnetic pole 211, the area of second contact surface 2137 is greater than second magnetic yoke 2133 perpendicular in described
The cross-sectional area of axis；Pass through corresponding first contact surface 2135 of each second magnetic pole 213 and the second contact surface 2137
Magnetic flux density it is identical.
By the way that first magnetic yoke 2131 and the second magnetic yoke 2133 are embedded into first magnetic pole 211, and respectively with
The first contact surface 2135 and the second contact surface 2137 of the at L-shaped curved surface of shape, can effectively increase institute between first magnetic pole 211
The contact area between the first magnetic pole 211 and first magnetic yoke 2131 and the second magnetic yoke 2133 is stated, to increase described first
The magnetic flux capacity of contact surface 2135 and the second contact surface 2137 reduces by first magnetic pole 211 and magnetically saturated risk occurs.
Referring to Fig. 5, in an embodiment of the invention, providing a kind of magnetic core 310, including the first magnetic pole 311, two
Two magnetic poles 313 and the first magnetic yoke 3131 and the second magnetic yoke 3133 for being set to 313 both ends of the second magnetic pole.The magnetic core
310 are with the difference of magnetic core 210 shown in Fig. 4: one end insertion of first magnetic yoke 3131 and first magnetic pole 311 connects
It connects, and forms the first contact surface 3135 of an arc-shaped curved surface between first magnetic pole 311；Second magnetic yoke 3133 and institute
The other end insertion connection of the first magnetic pole 311 is stated, and forms the second of an arc-shaped curved surface between first magnetic pole 311 and contacts
Face 3137.
By the way that first magnetic yoke 3131 and the second magnetic yoke 3133 are embedded into first magnetic pole 311, and respectively with
The first contact surface 3135 and the second contact surface 3137 that arc-shaped curved surface is formed between first magnetic pole 311, can effectively increase
Contact area between first magnetic pole 311 and first magnetic yoke 3131 and the second magnetic yoke 3133, to increase described
The magnetic flux capacity of one contact surface 3135 and the second contact surface 3137 reduces by first magnetic pole 311 and magnetically saturated risk occurs.
It is appreciated that first magnetic yoke is when insertion is with first magnetic pole and second magnetic yoke is in insertion institute
When stating the first magnetic pole, however it is not limited to two kinds of embedded modes shown in Fig. 4 and Fig. 5, correspondingly, first contact surface and the second contact
Face is also not limited to L shape curved surface and arc-shaped curved surface, can also be hemispherical curved surface, concave surface or wedge surface etc., need to only guarantee described
The area of first contact surface be greater than first magnetic yoke perpendicular to the central axes cross-sectional area, second contact surface
Area is greater than second magnetic yoke perpendicular to the cross-sectional area of the central axes.
It is appreciated that the area of first contact surface includes first magnetic yoke when being embedded in first magnetic pole and institute
State the contact to there is dissection with the magnetic line of force of first magnetic pole across first magnetic yoke formed between the first magnetic pole
Face area, i.e., described first contact surface and exist certain across first magnetic yoke and the magnetic line of force of first magnetic pole
Angle；The area of second contact surface include second magnetic yoke when being embedded in first magnetic pole with first magnetic pole it
Between the contact surface area for having dissection to the magnetic line of force for passing through second magnetic yoke and first magnetic pole that is formed, i.e., it is described
Second contact surface and there are certain angles across second magnetic yoke and the magnetic line of force of first magnetic pole.
Referring to Fig. 6, in an embodiment of the invention, providing a kind of integrated inductor 400, Fig. 6 show described integrated
The top view of inductance 400.The integrated inductor 400 includes magnetic core 410 and three windings 430, and the magnetic core 410 includes the first magnetic
411, three the second magnetic poles 413 of column and the first magnetic yoke 4131 and the second magnetic yoke for being set to 413 both ends of the second magnetic pole
4133 (in Fig. 6, second magnetic yoke 4133 is blocked by first magnetic yoke 4131, therefore is indicated with parantheses)；First magnetic pole
411 and three second magnetic poles 413 distinguish parallel intervals setting, between first magnetic pole 411 and second magnetic pole 413
Away from equal；One end of second magnetic pole 413 is connect by first magnetic yoke 4131 with one end of first magnetic pole 411,
The other end of second magnetic pole 413 is connect by second magnetic yoke 4133 with the other end of first magnetic pole 411；Three
The winding 430 is set to correspondingly in three second magnetic poles 413.
It is appreciated that three second magnetic poles 413 triangular in shape can be distributed, each second magnetic pole 413 is distinguished
It is set to the position where a vertex of triangle, first magnetic pole 411 is set to the position where circumcentre of a triangle,
So that first magnetic pole 411 is equal with the spacing of each second magnetic pole 413.Each first magnetic yoke 4131 with
The connection type of the connection type of first magnetic pole 411 and each second magnetic yoke 4133 and first magnetic pole 411
The description being referred in Fig. 4 or embodiment illustrated in fig. 5, details are not described herein again.
Referring to Fig. 7, in an embodiment of the invention, providing a kind of integrated inductor 500, Fig. 7 show described integrated
The top view of inductance 500.The integrated inductor 500 includes magnetic core 510 and four windings 530, and the magnetic core 510 includes the first magnetic
511, four the second magnetic poles 513 of column and the first magnetic yoke 5131 and the second magnetic yoke for being set to 513 both ends of the second magnetic pole
5133 (in Fig. 7, second magnetic yoke 5133 is blocked by first magnetic yoke 5131, therefore is indicated with parantheses)；First magnetic pole
511 and four 513 parallel intervals of the second magnetic pole be arranged, the spacing phase of first magnetic pole 511 and second magnetic pole 513
Deng；One end of second magnetic pole 513 is connect by first magnetic yoke 5131 with one end of first magnetic pole 511, described
The other end of second magnetic pole 513 is connect by second magnetic yoke 5133 with the other end of first magnetic pole 511；Described in four
Winding 530 is set to correspondingly in four second magnetic poles 513.
It is appreciated that four second magnetic poles 513 can be distributed in matrix, each second magnetic pole 513 is set respectively
It is placed in the position where one jiao of matrix, first magnetic pole 511 is set to the center of matrix, so that described first
Magnetic pole 511 is equal with the spacing of each second magnetic pole 513.Each first magnetic yoke 5131 and first magnetic pole 511
Connection type and the connection type of each second magnetic yoke 5133 and first magnetic pole 511 be referred to Fig. 4 or figure
Description in 5 illustrated embodiments, details are not described herein again.
Referring to Fig. 8, in an embodiment of the invention, providing a kind of power inverter 10, including embodiment illustrated in fig. 1
Integrated inductor 100 and two switch bridge arms 1,2, wherein the structure of the integrated inductor 100 can refer to embodiment illustrated in fig. 1
In associated description, the first winding 131 and the second winding 133 of the integrated inductor 100 respectively with described two switch bridge arms
1, it 2 connects one to one.Specifically, the switch bridge arm 1 includes the upper switch pipe S1 that is serially connected and lower switch pipe S2, described
Switch bridge arm 2 includes the upper switch pipe S3 and lower switch pipe S4 being serially connected, the switch bridge arm 1 and 2 phase of switch bridge arm
Mutually in parallel, one end of first winding 131 and second winding 133 is connected with each other, the other end of first winding 131
It is connect with the bridge arm midpoint of the switch bridge arm 1, in the bridge arm of the other end of second winding 133 and the switch bridge arm 2
Point connection.
It is appreciated that due to being decoupling shape between the first winding 131 and the second winding 133 of the integrated inductor 100
State, therefore, in practical application, not only can individually adjust the inductance of first winding 131 and the second winding 133, also
The operating mode of the power inverter 10 can be adjusted according to payload size, for example, when loading smaller, it can be by described the
One winding 131 or the second winding 133 are set as dormant state, i.e., set underloading operating mode for the power inverter 10,
So as to reduce the power consumption of the power inverter 10.
In an embodiment of the invention, the power inverter may include integrated inductor and N number of switch bridge arm, the collection
It may include magnetic core and N number of winding at inductance, the magnetic core includes the first magnetic pole, N number of second magnetic pole and is set to described second
First magnetic yoke and the second magnetic yoke at magnetic pole both ends；First magnetic pole and N number of second magnetic pole difference parallel interval setting, institute
It is equal with the spacing of second magnetic pole to state the first magnetic pole；One end of second magnetic pole passes through first magnetic yoke and described the
One end of one magnetic pole connects, and the other end of second magnetic pole is connected by the other end of second magnetic yoke and first magnetic pole
It connects；N number of winding is set to correspondingly in N number of second magnetic pole；N number of winding respectively with N number of switch
Bridge arm connects one to one；Wherein, N is the integer more than or equal to 2.The integrated inductor can be but not limited to Fig. 1, Fig. 6
Or the integrated inductor in embodiment illustrated in fig. 7, the associated description being specifically referred in Fig. 1, Fig. 6 or embodiment illustrated in fig. 7, this
Place repeats no more.It is appreciated that the power inverter can be by least one of described N number of winding when loading smaller
Winding is set as dormant state, i.e., underloading operating mode is set by the power inverter, so as to reduce the power
The power consumption of converter, and the power inverter is promoted in working efficiency at light load.
It is appreciated that the embodiment of the present invention is not construed as limiting the level grade of the power inverter, for example, the power
Converter can be two level power converters, three level power converter or four level power converters etc.；In addition, of the invention
Embodiment the type of the power inverter is also not construed as limiting, for example, the power inverter can be diode clamp
Type multi-level power converter is also possible to capacitor-clamped type multi-level power converter etc..
The above disclosure is only a preferred embodiment of the invention, cannot limit the right of the present invention with this certainly
Range, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and according to right of the present invention
Equivalent variations made by it is required that, still belongs to the scope covered by the invention.
Claims (17)
1. a kind of integrated inductor, which is characterized in that the integrated inductor includes magnetic core and N number of winding, and the magnetic core includes first
Magnetic pole, N number of second magnetic pole and the first magnetic yoke and the second magnetic yoke that are set to second magnetic pole both ends；Wherein, N be greater than or
Integer equal to 2；
First magnetic pole and N number of second magnetic pole difference parallel interval setting, first magnetic pole and second magnetic pole
Spacing it is equal；
One end of second magnetic pole is connect by first magnetic yoke with one end of first magnetic pole, second magnetic pole
The other end is connect by second magnetic yoke with the other end of first magnetic pole；
N number of winding is set to correspondingly in N number of second magnetic pole；
Wherein, first magnetic yoke is embedded in one end of first magnetic pole, and forms first between first magnetic pole and contact
Face；Second magnetic yoke is embedded in the other end of first magnetic pole, and forms the second contact surface between first magnetic pole；Its
In, it is identical as the magnetic flux density by second contact surface by the magnetic flux density of first contact surface.
2. integrated inductor as described in claim 1, which is characterized in that the central axes of first magnetic yoke are perpendicular to described first
Magnetic pole, the area of first contact surface are greater than first magnetic yoke perpendicular to the cross-sectional area of the central axes；Described
The central axes of two magnetic yokes are greater than second magnetic yoke perpendicular to institute perpendicular to first magnetic pole, the area of second contact surface
State the cross-sectional area of central axes.
3. integrated inductor as described in claim 1, which is characterized in that first contact surface and second contact surface are opposite
In the central symmetry of first magnetic pole.
4. integrated inductor as claimed in claim 2, which is characterized in that first contact surface and second contact surface are opposite
In the central symmetry of first magnetic pole.
5. the integrated inductor as described in claim 1-4 any one, which is characterized in that first contact surface and described second
Contact surface is L shape curved surface.
6. the integrated inductor as described in claim 1-4 any one, which is characterized in that first contact surface and described second
Contact surface is arc-shaped curved surface.
7. the integrated inductor as described in claim 1-4 any one, which is characterized in that one end of first magnetic pole will be any
Two first magnetic yokes are mutually isolated, and the other end of first magnetic pole is mutually isolated by the second magnetic yoke described in any two.
8. integrated inductor as claimed in claim 5, which is characterized in that one end of first magnetic pole is by described in any two
One magnetic yoke is mutually isolated, and the other end of first magnetic pole is mutually isolated by the second magnetic yoke described in any two.
9. integrated inductor as claimed in claim 6, which is characterized in that one end of first magnetic pole is by described in any two
One magnetic yoke is mutually isolated, and the other end of first magnetic pole is mutually isolated by the second magnetic yoke described in any two.
10. the integrated inductor as described in claim 1-4 any one, which is characterized in that first magnetic pole is by without internal gas
The magnetic material of gap is made, and second magnetic pole, the first magnetic yoke and the second magnetic yoke are by there is the magnetic material of internal air gap to be made；Institute
The magnetic conductivity for stating the first magnetic pole is greater than the magnetic conductivity of second magnetic pole, the first magnetic yoke and the second magnetic yoke.
11. integrated inductor as claimed in claim 5, which is characterized in that first magnetic pole by no internal air gap magnetic material
Material is made, and second magnetic pole, the first magnetic yoke and the second magnetic yoke are by there is the magnetic material of internal air gap to be made；First magnetic pole
Magnetic conductivity be greater than second magnetic pole, the first magnetic yoke and the second magnetic yoke magnetic conductivity.
12. integrated inductor as claimed in claim 6, which is characterized in that first magnetic pole by no internal air gap magnetic material
Material is made, and second magnetic pole, the first magnetic yoke and the second magnetic yoke are by there is the magnetic material of internal air gap to be made；First magnetic pole
Magnetic conductivity be greater than second magnetic pole, the first magnetic yoke and the second magnetic yoke magnetic conductivity.
13. integrated inductor as claimed in claim 7, which is characterized in that first magnetic pole by no internal air gap magnetic material
Material is made, and second magnetic pole, the first magnetic yoke and the second magnetic yoke are by there is the magnetic material of internal air gap to be made；First magnetic pole
Magnetic conductivity be greater than second magnetic pole, the first magnetic yoke and the second magnetic yoke magnetic conductivity.
14. integrated inductor as claimed in claim 8, which is characterized in that first magnetic pole by no internal air gap magnetic material
Material is made, and second magnetic pole, the first magnetic yoke and the second magnetic yoke are by there is the magnetic material of internal air gap to be made；First magnetic pole
Magnetic conductivity be greater than second magnetic pole, the first magnetic yoke and the second magnetic yoke magnetic conductivity.
15. integrated inductor as claimed in claim 9, which is characterized in that first magnetic pole by no internal air gap magnetic material
Material is made, and second magnetic pole, the first magnetic yoke and the second magnetic yoke are by there is the magnetic material of internal air gap to be made；First magnetic pole
Magnetic conductivity be greater than second magnetic pole, the first magnetic yoke and the second magnetic yoke magnetic conductivity.
16. a kind of power inverter, including integrated inductor and N number of switch bridge arm, which is characterized in that the integrated inductor is as weighed
N number of winding that benefit requires integrated inductor described in the integrated inductor described in 1 to 15 any one to include N number of is opened with described respectively
Bridge arm is closed to connect one to one.
17. power inverter as claimed in claim 16, which is characterized in that the power inverter includes underloading Working mould
Formula, under the underloading operating mode, at least one winding in N number of winding is arranged to dormant state.
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| CN107610880A (en) * | 2017-10-19 | 2018-01-19 | 安徽大学 | A kind of differential mode common mode magnetic integrated inductor |
| CN109889054B (en) * | 2019-01-24 | 2021-11-05 | 深圳市禾望电气股份有限公司 | Converter topology |
| JP7105855B2 (en) | 2019-12-18 | 2022-07-25 | インダストリアル テクノロジー リサーチ インスティチュート | Electromagnetic property measuring device, electromagnetic property measuring system, and electromagnetic property measuring method |
| CN113161122A (en) * | 2020-01-22 | 2021-07-23 | 株式会社村田制作所 | Inductance structure |
| WO2021248340A1 (en) * | 2020-06-10 | 2021-12-16 | 华为数字能源技术有限公司 | Inductor and related apparatus |
| CN113593849B (en) * | 2021-07-21 | 2023-09-29 | Oppo广东移动通信有限公司 | Transformer and charging device |
| CN115313822B (en) * | 2022-10-10 | 2023-11-07 | 深圳市首航新能源股份有限公司 | Magnetic integrated inductor and inverter |
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| CN102208242A (en) * | 2011-03-18 | 2011-10-05 | 华为技术有限公司 | Magnetic integration inductor and manufacturing method thereof, and bridgeless power factor correct (PFC) circuit |
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| CN203552913U (en) * | 2013-11-21 | 2014-04-16 | 艾默生网络能源有限公司 | Three-phase reactor and inverter grid-connecting system |
| CN104021920A (en) * | 2014-05-27 | 2014-09-03 | 华为技术有限公司 | Coupling inductor and power converter |
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| JP5622784B2 (en) * | 2012-04-17 | 2014-11-12 | 株式会社タムラ製作所 | Magnetic core and inductor |
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| DE3526195A1 (en) * | 1985-07-23 | 1987-01-29 | Ant Nachrichtentech | Inductive component |
| CN102208242A (en) * | 2011-03-18 | 2011-10-05 | 华为技术有限公司 | Magnetic integration inductor and manufacturing method thereof, and bridgeless power factor correct (PFC) circuit |
| CN102594107A (en) * | 2012-03-15 | 2012-07-18 | 华中科技大学 | LCL filter utilizing integrated inductors |
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