CN209357573U - The inductance balance magnetic core and three-phase reactor of three-phase reactor - Google Patents
The inductance balance magnetic core and three-phase reactor of three-phase reactor Download PDFInfo
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- CN209357573U CN209357573U CN201821881312.8U CN201821881312U CN209357573U CN 209357573 U CN209357573 U CN 209357573U CN 201821881312 U CN201821881312 U CN 201821881312U CN 209357573 U CN209357573 U CN 209357573U
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Abstract
The utility model relates to reactor technical fields, and in particular to a kind of the inductance balance magnetic core and three-phase reactor of three-phase reactor.A kind of inductance balance magnetic core of three-phase reactor, transverse direction " day " shaped magnetic core being mainly made of upper yoke portion, lower yoke portion and three magnetic poles, is located in the middle between the upper and lower ends of magnetic pole and upper yoke portion and lower yoke portion and is equipped with air gap gasket.Air gap by being arranged in the upper and lower ends of magnetic pole by the magnetic core of the utility model, avoid coil, when so that the inductance of three groups of coils reaching equilibrium state, there is no dispersing flux phenomenon, eddy-current loss is not caused to coil, to which the raising of coil local temperature will not be caused, for solving the problem of since coil temperature is excessively high and reduce reactor service life at reactor core air gap.
Description
Technical field
The utility model relates to reactor technical fields, and in particular to a kind of inductance balance magnetic core and three of three-phase reactor
Phase reactor.
Background technique
Reactor is also inductor, when a conductor is powered will the certain space range occupied by it generate magnetic field,
So the electric conductor of all energy current-carrying has inductive in general sense.However the inductance for the long straight conductor that is powered is smaller, is produced
Raw magnetic field is not strong, therefore actual reactor is that conducting wire is coiled into helical form of tubes, claims air reactor；Sometimes for allowing this
Solenoid has bigger inductance, and magnetic core is just inserted into solenoid.Reactance is divided into induction reactance and capacitive reactance, and more scientific classification is
Impedor (inductor) and capacitive reactance device (capacitor) are referred to as reactor, however since first there is inductor in the past, and claimed
For reactor, so capacitor described in people is exactly capacitive reactance device now, and reactor refers exclusively to inductor.
Three-phase alternating current is a kind of most commonly seen transporting pattern of China's electrical energy transportation, referred to as three-phase electricity.Three-phase alternating current
Power supply, frequency is identical, amplitude is equal by three, the phase power supply that successively 120 ° of mutual deviation of exchange potential forms.Phase and phase it
Between voltage be known as line voltage, appoint two-phase between voltage be all 380V.Mutually the voltage between neutral point is known as phase voltage, appoints
The voltage of one opposite neutral point is all 220V.The power supply that generator issues all is three-phase, each phase of three phase mains with wherein
Property point can constitute a single-phase circuit and provide 220V electric power energy for user.
In the industrial system of general high power applications, three-phase alternating current is preferable in energy use efficiency and stability
A kind of selection is common in motor, compressor, frequency converter, inverter, charging pile and communication power supply etc..Power factor correct,
Electromagnetic noise inhibits and the just common trace to three-phase reactor on factors dictates such as current ripples control.In three-phase reactor
In design specification, the inductance value of three groups of coils must be controlled in certain disparity range.The three-phase reactor of conventional prior art
Magnetic structure be E+E type core combination mode, through intermediate magnetic pole centre open air gap or three joint surfaces with gasket every
The mode of air gap adjusts the phenomenon higher positioned at intermediate coil inductance out.This intermediate coil inductance can higher phenomenon be by
In the inspired magnetic flux of magnetomotive force of two coils of magnetic circuit and outside that the inspired magnetic flux of the magnetomotive force of intermediate coil is walked
The magnetic circuit walked is different, and the magneto resistive ratio outer coil of the walked magnetic circuit of intermediate coil excitation is lower, and the low then inductance of magnetic resistance is just
Height, therefore center pillar air gap is in order to which the magnetic resistance of the walked magnetic circuit of intermediate coil excitation is turned up to reach the purpose for downgrading inductance.However,
Air gap edge flux can extend to the outside, i.e. dispersing flux (such as Fig. 9).This part magnetic flux is generated due to magnetic potential of air gap, it
Occur in magnetic core window, the conductor in high frequency in meeting cutting window near air gap causes eddy-current loss, and then leads to this
The temperature rise of area conductors is excessively high, has shortened the service life of reactor.
Utility model content
In view of the above technical problems, the purpose of this utility model is to provide a kind of inductance balance magnetic cores of three-phase reactor
And three-phase reactor, for solving since coil temperature is excessively high at reactor core air gap, and reduce reactor service life
Problem.
To achieve the above object, technical solution adopted in the utility model is:
A kind of inductance balance magnetic core of three-phase reactor, the transverse direction being mainly made of upper yoke portion, lower yoke portion and three magnetic poles
" day " shaped magnetic core, it is characterised in that: be located in the middle between the upper and lower ends of magnetic pole and upper yoke portion and lower yoke portion and be equipped with gas
Gap gasket.
Further, the magnetic pole is that several magnetic patch stack.
Further, the magnetic pole is vertically divided into multilayer, and every layer is that multiple magnetic patch are arranged in array.
Further, the upper yoke portion and lower yoke portion are that several magnetic patch stack.
Further, the upper yoke portion and lower yoke portion are equipped with three groups of magnetic patch groups, three groups of magnetic patch groups along its length
It is located at corresponding three magnetic poles；Every group of magnetic patch group includes vertical multilayer, and every layer is arranged in juxtaposition for multiple magnetic patch.
Further, it is located in the middle magnetic patch group and is equipped with air gap gasket towards the side of magnetic pole, the magnetic patch group positioned at both sides
Air gap gasket is equipped with backwards to the side of magnetic pole.
Further, the magnetic patch is that soft magnetic metal alloy powder core or amorphous nano-crystalline powder core or ferrite are made
Rectangular parallelepiped structure.
A kind of three-phase reactor, the inductance balance magnetic core including any of the above-described three-phase reactor.
Further, coil, the three-phase are equipped in each magnetic pole of the inductance balance magnetic core of the three-phase reactor
The upper and lower ends of the inductance balance magnetic core of reactor are respectively provided with a fixed frame, are fixed between two fixed frames by fixed screw
Connection.
The utility model has the following beneficial effects: the magnetic core of the utility model is by being arranged in up and down the two of magnetic pole for air gap
End, avoids coil, when so that the inductance of three groups of coils reaching equilibrium state, does not have dispersing flux phenomenon, does not cause whirlpool to coil
Stream loss, so that the raising of coil local temperature will not be caused, for solving due to coil temperature mistake at reactor core air gap
Height, and the problem of reduce reactor service life.
Detailed description of the invention
Fig. 1 is the front schematic view one of the inductance balance magnetic core of three-phase reactor.
Fig. 2 is the side schematic view one of the inductance balance magnetic core of three-phase reactor.
Fig. 3 is the magnetic pole schematic cross-section one of the inductance balance magnetic core of three-phase reactor.
Fig. 4 is the front schematic view of three-phase reactor.
Fig. 5 is the side schematic view of three-phase reactor.
Fig. 6 is the front schematic view two of the inductance balance magnetic core of three-phase reactor.
Fig. 7 is the side schematic view two of the inductance balance magnetic core of three-phase reactor.
Fig. 8 is the magnetic pole schematic cross-section two of the inductance balance magnetic core of three-phase reactor.
Fig. 9 is through FEMM (Finite Element Method Magnetics magnetics FInite Element) software to magnetic circuit
Structure is the structure for the core combination mode progress magnetic field simulation gained that E+E type center pillar is provided with air gap, shows air gap edge
Dispersing flux phenomenon.
In figure: 1, upper yoke portion, 2, lower yoke portion, 3, magnetic pole, 4, air gap gasket, 5, coil, 6, magnetic patch, 7, fixed frame, 8, solid
Determine screw.20, E+E type magnetic core, 21, intermediate coil, 22, center pillar air gap, 23, magnetic flux, 24, dispersing flux.
Specific embodiment
The utility model in order to better understand does the technical solution of the utility model below with reference to embodiment and attached drawing
Further instruction (as shown in figs 1-9).
A kind of inductance balance magnetic core of three-phase reactor, the cross being mainly made of upper yoke portion 1, lower yoke portion 2 and three magnetic poles 3
To " day " shaped magnetic core；The upper yoke portion 1, lower yoke portion 2 and magnetic pole 3 are that several magnetic patch 6 stack, and the magnetic pole 3 is vertical
It is divided into multilayer, every layer is multiple 6 rectangular array of magnetic patch arrangements, and the upper yoke portion 1 and lower yoke portion 2 are equipped with along its length
Three groups of magnetic patch groups, three groups of magnetic patch groups are located at corresponding three magnetic poles 3；Every group of magnetic patch group includes vertical multilayer, and every layer is
Multiple magnetic patch 6 are arranged in juxtaposition；It is located in the middle magnetic patch group and (is located in the middle towards the side of magnetic pole 3 equipped with air gap gasket 4
Air gap gasket 4 is equipped between the upper and lower ends of magnetic pole 3 and upper yoke portion 1 and lower yoke portion 2, the air gap gasket 4 is non-magnetic
Material), the magnetic patch group and intermediate magnetic patch group that will cause both sides form specific offset, and the magnetic patch group positioned at both sides is backwards to magnetic pole 3
Side be equipped with air gap gasket 4 so that the cross section formed by 4 surface of air gap gasket it is coplanar.The magnetic patch 6 is soft magnetism gold
Belong to alloy powder core, such as iron sial, iron silicon, iron nickel, iron tantnickel；Or amorphous nano-crystalline powder core: or ferrite, such as manganese-zinc ferrite
Body；The rectangular parallelepiped structure being made.
A kind of three-phase reactor, the inductance balance magnetic core including three-phase reactor, the inductance balance of the three-phase reactor
Coil 5 is equipped in each magnetic pole 3 of magnetic core, the upper and lower ends of the inductance balance magnetic core of the three-phase reactor are respectively provided with one
Fixed frame 7 is fixedly connected between two fixed frames 7 by fixed screw 8.The fixed frame 7 can be moderately accommodated by two
Yoke portion 1, lower yoke portion 2 metal material mechanism member manufacture, and on the fixed frame 7 be equipped with multiple screw preformed holes.
The manufacturing process of three-phase reactor: (1) first small magnetic patch in upper yoke portion 1, lower yoke portion 2 and three magnetic poles 3 is carried out
It is glued.Wherein upper yoke portion 1, lower yoke portion 2 is located in the middle magnetic patch group gluing operation must consider offset, therefore can first be cut before gluing
The non-permeable material air gap gasket 4 of good proper area, thickness is attached at magnetic patch group corresponding position, by three magnetic patch
Group is laid flat whole, can carry out upper yoke portion 1, the glued operation in lower yoke portion 2.(2) to each component production after, can first by upper yoke portion 1,
Lower yoke portion 2 is respectively implanted in fixed frame 7, and gives glued fixation.(3) it is inserted in by magnetic pole 3 around the coil 5 made, then sets
Between upper yoke portion 1, lower yoke portion 2.(4) last again to be connected upper and lower two fixed frames 7 by fixed screw 8.
As shown in Fig. 1,2,3,6,7,8, upper yoke portion 1, lower yoke portion 2 and magnetic pole 3 in the application, by different sizes from it is different
The magnetic patch 6 of quantity is piled up, and wherein the arrangement of air gap gasket 4 is identical.Therefore, the three-phase electricity required for different capacity
For the design of anti-device, the application can be in such a way that the magnetic patch 6 of different sizes and different number be piled up, and gas of corresponding size of arranging in pairs or groups
Gap gasket 4, to complete three-phase reactor design.Be therefore, another advantage of the application is, have high flexible and elasticity come in response to
The three-phase reactor design requirement that different capacity requires.The selection of 6 material of magnetic patch, vertical mode, size and the quantity stacked of group etc.
Design be to be assessed according to the working frequency in application conditions, maximum load current and required inductance to do.In magnetic patch material
In the selection of material, based on soft magnetic metal alloy powder core, such as iron silicon powder core, iron Si-Al Magnetic Powder Core, iron nickel powder core, such as working frequency
More than 100KHz then manganese-zinc ferrite core also can be one another kind of magnetic patch material selection.It has each section magnetic patch only and stacks a group design
It completes, and after size verdict, other components could be designed according to the size organized needed for standing above.
The principle of three-phase reactor: air gap gasket 4 is equipped in intermediate 3 upper and lower ends of magnetic pole and makes the inductance of three groups of coils can
Up to equilibrium state；Air gap gasket 4 is located at the outside of conductor coils 5, therefore the dispersing flux effect at air gap edge is to conductor coils 5
Influence can minimize, so that unnecessary eddy-current loss on conductor coils 5 be effectively reduced, increase the service life of reactor.
It is described above be only the utility model Application Example, certainly cannot with this come limit the utility model it
Interest field, therefore equivalence changes made according to the patent scope of the utility model, still belong to the protection scope of the utility model.
Claims (9)
1. a kind of inductance balance magnetic core of three-phase reactor is mainly made of upper yoke portion (1), lower yoke portion (2) and three magnetic poles (3)
Transverse direction " day " shaped magnetic core, it is characterised in that: be located in the middle magnetic pole (3) upper and lower ends and upper yoke portion (1) and lower yoke portion
(2) air gap gasket (4) are equipped between.
2. the inductance balance magnetic core of three-phase reactor according to claim 1, it is characterised in that: the magnetic pole (3) is if be
Dry magnetic patch (6) stacks.
3. the inductance balance magnetic core of three-phase reactor according to claim 2, it is characterised in that: the magnetic pole (3) is vertical
It is divided into multilayer, every layer is that multiple magnetic patch (6) are arranged in array.
4. the inductance balance magnetic core of three-phase reactor according to claim 1, it is characterised in that: the upper yoke portion (1) and
Lower yoke portion (2) is that several magnetic patch (6) stack.
5. the inductance balance magnetic core of three-phase reactor according to claim 4, it is characterised in that: the upper yoke portion (1) and
Lower yoke portion (2) is equipped with three groups of magnetic patch groups along its length, and three groups of magnetic patch groups are located at corresponding three magnetic poles (3)；Often
Group magnetic patch group includes vertical multilayer, and every layer is arranged in juxtaposition for multiple magnetic patch (6).
6. the inductance balance magnetic core of three-phase reactor according to claim 5, it is characterised in that: be located in the middle magnetic patch group
Air gap gasket (4) are equipped with towards the side of magnetic pole (3), the magnetic patch group positioned at both sides is equipped with air gap pad backwards to the side of magnetic pole (3)
Piece (4).
7. the inductance balance magnetic core of three-phase reactor according to claim 2, it is characterised in that: the magnetic patch (6) is soft
The rectangular parallelepiped structure that magnetic metal alloy powder core or amorphous nano-crystalline powder core or ferrite are made.
8. a kind of three-phase reactor, it is characterised in that: the inductance including the described in any item three-phase reactors of claim 1-7 is flat
Weigh magnetic core.
9. three-phase reactor according to claim 8, it is characterised in that: the inductance balance magnetic core of the three-phase reactor
It is equipped with coil (5) on each magnetic pole (3), the upper and lower ends of the inductance balance magnetic core of the three-phase reactor are respectively provided with one admittedly
Determine frame (7), is fixedly connected between two fixed frames (7) by fixed screw (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821881312.8U CN209357573U (en) | 2018-11-15 | 2018-11-15 | The inductance balance magnetic core and three-phase reactor of three-phase reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821881312.8U CN209357573U (en) | 2018-11-15 | 2018-11-15 | The inductance balance magnetic core and three-phase reactor of three-phase reactor |
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| Publication Number | Publication Date |
|---|---|
| CN209357573U true CN209357573U (en) | 2019-09-06 |
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| CN201821881312.8U Active CN209357573U (en) | 2018-11-15 | 2018-11-15 | The inductance balance magnetic core and three-phase reactor of three-phase reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109326420A (en) * | 2018-11-15 | 2019-02-12 | 山西中磁尚善科技有限公司 | The inductance balance magnetic core and three-phase reactor of three-phase reactor |
-
2018
- 2018-11-15 CN CN201821881312.8U patent/CN209357573U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109326420A (en) * | 2018-11-15 | 2019-02-12 | 山西中磁尚善科技有限公司 | The inductance balance magnetic core and three-phase reactor of three-phase reactor |
| CN109326420B (en) * | 2018-11-15 | 2023-12-26 | 山西中磁尚善科技有限公司 | Inductance balance magnetic core of three-phase reactor and three-phase reactor |
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