CN206516456U - A kind of three parallel reactors and current transformer - Google Patents
A kind of three parallel reactors and current transformer Download PDFInfo
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- CN206516456U CN206516456U CN201720143949.6U CN201720143949U CN206516456U CN 206516456 U CN206516456 U CN 206516456U CN 201720143949 U CN201720143949 U CN 201720143949U CN 206516456 U CN206516456 U CN 206516456U
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Abstract
The utility model discloses a kind of three parallel reactors and current transformer, the three parallel reactor includes 3*N iron core column, the first iron yoke, the second iron yoke and 3*N winding, wherein N >=2；Wherein, the first iron yoke and second iron yoke be arranged in parallel；3*N iron core column is disposed side by side between the first iron yoke and the second iron yoke；A winding is all arranged with each iron core column.Three parallel reactor and current transformer disclosed in the utility model, compared with the inductance of five post schemes, single winding differential mode sensibility reciprocal and common mode sensibility reciprocal do not change, but the iron core column and iron yoke of reactor are reduced, and can be saved installing space, can be effectively reduced cost.
Description
Technical field
The utility model is related to converter topology field, more particularly to a kind of three parallel reactors and current transformer.
Background technology
In wind electric converter, existing scheme generally reduces mains by harmonics electric current using LC or LCL filter, but should
Scheme easily causes the generation of wind field resonance accident.
For wind field resonance problems, offset by phase-shifting carrier wave shunt chopper mains by harmonics, reduce and even take
Disappear ac filter electric capacity, so as to fundamentally solve the problem.
However, phase-shifting carrier wave can produce common-mode voltage between shunt chopper, and existing three-phase three-column reactor without
Common mode inhibition capacity, easily causes great circulation, therefore, more than prior art using three-phase and five-pole reactance or three-phase and four-pole reactance come
Common code impedance needed for providing, so as to reduce circulation.But not only volume is big for the reactor of the use program, cost is also higher.
Utility model content
Main purpose of the present utility model is to propose a kind of three parallel reactors and current transformer, it is intended to solve existing skill
The technical problem that art is present.
To achieve the above object, the utility model embodiment first aspect provides a kind of three parallel reactors, described three
Parallel reactor includes 3*N iron core column, the first iron yoke, the second iron yoke and 3*N winding, wherein N >=2；
Wherein, first iron yoke and second iron yoke be arranged in parallel；The 3*N iron core column is disposed side by side on described
Between first iron yoke and second iron yoke；
A winding is all arranged with each iron core column.
Further, the iron core column is provided with air gap.
Further, the material of the iron core column, first iron yoke and second iron yoke is free of air gap for inside
Magnetic material.
Further, magnetic material of the inside without air gap is specially silicon steel sheet, ferrite, non-crystalline material or crystallite
Material.
In addition, to achieve the above object, the utility model embodiment second aspect provides a kind of current transformer, including it is N number of simultaneously
The power model of connection, the current transformer also includes the three parallel reactors for being concatenated into the output end of the power model；Described three
Parallel reactor includes 3*N iron core column, the first iron yoke, the second iron yoke and 3*N winding, wherein N >=2；
Wherein, first iron yoke and second iron yoke be arranged in parallel；The 3*N iron core column is disposed side by side on described
Between first iron yoke and second iron yoke；
A winding is all arranged with each iron core column.
Further, the iron core column is provided with air gap.
Further, the material of the iron core column, first iron yoke and second iron yoke is free of air gap for inside
Magnetic material.
Further, magnetic material of the inside without air gap is specially silicon steel sheet, ferrite, non-crystalline material or crystallite
Material.
The three parallel reactors and current transformer that the utility model embodiment is provided, it is single compared with the inductance of five post schemes
Individual winding differential mode sensibility reciprocal and common mode sensibility reciprocal do not change, but the iron core column and iron yoke of reactor are reduced, and can save installation empty
Between, cost can be effectively reduced.
Brief description of the drawings
Fig. 1 is three parallel reactor schematic diagrames of the utility model embodiment；
Fig. 2 is the converter structure schematic diagram of the utility model embodiment；
Fig. 3 is the magnetic field structure schematic diagram of three parallel reactors of the utility model embodiment；
Fig. 4 is another magnetic field structure schematic diagram of three parallel reactors of the utility model embodiment.
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that specific embodiment described herein is not used to limit this only to explain the utility model
Utility model.
Each embodiment of the utility model is realized referring now to accompanying drawing description.In follow-up description, using for
The suffix of such as " module ", " part " or " unit " of element is represented only for being conducive to explanation of the present utility model, itself
Not specific meaning.
The description for being related to " first ", " second " etc. in the utility model is only used for describing purpose, and it is not intended that referring to
Show or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " are defined
At least one this feature can be expressed or be implicitly included to two " feature.In addition, the technical scheme between each embodiment can
To be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical scheme occurs
It is conflicting or when can not realize it will be understood that the combination of this technical scheme is not present, also not in the guarantor of the utility model requirement
Within the scope of shield.
As shown in figure 1, the utility model first embodiment proposes a kind of three parallel reactors, the three parallel reactor
Including six iron core columns 10, the first iron yoke 11, the second iron yoke and six windings.
Wherein the first iron yoke 11 and the second iron yoke 12 be arranged in parallel；Six iron core columns 10 are disposed side by side on the He of the first iron yoke 11
Between second iron yoke 12.
In the present embodiment, iron core column 10 is provided with air gap.
In the present embodiment, the material of iron core column 10, the first iron yoke 11 and the second iron yoke 12 is the internal magnetic for being free of air gap
Property material.Magnetic material concretely silicon steel sheet, ferrite, non-crystalline material or micro crystal material of the inside without air gap.
A winding 13 is all arranged with each iron core column 10.
Go out the situation of the parallel reactor of the post of three-phase six it should be noted that Fig. 1 is example, it is envisaged that ground, three-phase nine
The parallel reactor of post, the parallel reactor of the post of three-phase 12 structure similarly.
Reference picture 2, a kind of current transformer that Fig. 2 proposes for the utility model second embodiment, including N number of power mould in parallel
Block 20.In the present embodiment, power model 20 can be three-phase inverter.
The current transformer also includes the three parallel reactors 21 for being concatenated into the output end of power model 20；Three parallel reactors
21 include 3*N iron core column, the first iron yoke, the second iron yoke and 3*N winding, wherein N >=2.
First iron yoke and the second iron yoke be arranged in parallel；3*N iron core column be disposed side by side on the first iron yoke and the second iron yoke it
Between.
A winding is all arranged with each iron core column.
In the present embodiment, iron core column is provided with air gap.
In the present embodiment, the material of iron core column, the first iron yoke and the second iron yoke is the internal magnetic material for being free of air gap.
Magnetic material concretely silicon steel sheet, ferrite, non-crystalline material or micro crystal material of the inside without air gap.
It please check shown in Fig. 3 and Fig. 4, by taking N=2 as an example, shunt chopper phase-shifting carrier wave angle is 360/N=180 °, right
For every group of inverter, inverter current is divided into two parts：Differential-mode current and common mode circulation.
Because every group of inverter differential-mode current three-phase sum is zero, corresponding iron yoke magnetic field sum is zero, now three-phase six
The parallel reactance of post is equal to the three-phase three-column reactance of two parallel connections, compared with three-phase and five-pole reactance, single winding differential mode sense
Amount does not change, as shown in Figure 3.
Common mode circulation between shunt chopper always flows into another place's outflow at one, flow into where winding three of electric current
The magnetic direction that the magnetic direction that iron core column is produced is produced with three iron core columns where electric current outflow winding is on the contrary, so that electricity
It is anti-to be provided with common mode inhibition capacity.Compared with three-phase and five-pole reactance, common mode sensibility reciprocal does not change, as shown in Figure 4.
The parallel reactance of the post of three-phase six reduces four iron core columns and part iron yoke compared with two three-phase and five-pole reactance, and saves
Part installing space, therefore, it is possible to effectively reducing cost.
The three parallel reactors and current transformer that the utility model embodiment is provided, it is single compared with the inductance of five post schemes
Individual winding differential mode sensibility reciprocal and common mode sensibility reciprocal do not change, but the iron core column and iron yoke of reactor are reduced, and can save installation empty
Between, cost can be effectively reduced.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row
His property is included, so that process, method, article or device including a series of key elements not only include those key elements, and
And also including other key elements being not expressly set out, or also include for this process, method, article or device institute inherently
Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including this
Also there is other identical element in process, method, article or the device of key element.
Preferred embodiment of the present utility model is these are only, the scope of the claims of the present utility model is not thereby limited, it is every
The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical fields, are similarly included in scope of patent protection of the present utility model.
Claims (8)
1. a kind of three parallel reactors, it is characterised in that the three parallel reactor includes 3*N iron core column, the first iron
Yoke, the second iron yoke and 3*N winding, wherein N >=2；
Wherein, first iron yoke and second iron yoke be arranged in parallel；The 3*N iron core column is disposed side by side on described first
Between iron yoke and second iron yoke；
A winding is all arranged with each iron core column.
2. a kind of three parallel reactor according to claim 1, it is characterised in that the iron core column is provided with air gap.
3. a kind of three parallel reactor according to claim 1 or 2, it is characterised in that the iron core column, described first
The material of iron yoke and second iron yoke is the internal magnetic material for being free of air gap.
4. a kind of three parallel reactor according to claim 3, it is characterised in that the inside is free of the magnetic of air gap
Material is specially silicon steel sheet, ferrite, non-crystalline material or micro crystal material.
5. a kind of current transformer, including N number of power model in parallel, it is characterised in that：The current transformer also includes being concatenated into the work(
Three parallel reactors of rate module output end；The three parallel reactor includes 3*N iron core column, the first iron yoke, second
Iron yoke and 3*N winding, wherein N >=2；
Wherein, first iron yoke and second iron yoke be arranged in parallel；The 3*N iron core column is disposed side by side on described first
Between iron yoke and second iron yoke；
A winding is all arranged with each iron core column.
6. a kind of current transformer according to claim 5, it is characterised in that the iron core column is provided with air gap.
7. a kind of current transformer according to claim 5 or 6, it is characterised in that the iron core column, first iron yoke and institute
It is the internal magnetic material for being free of air gap to state the material of the second iron yoke.
8. a kind of current transformer according to claim 7, it is characterised in that magnetic material of the inside without air gap is specific
For silicon steel sheet, ferrite, non-crystalline material or micro crystal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720143949.6U CN206516456U (en) | 2017-02-17 | 2017-02-17 | A kind of three parallel reactors and current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720143949.6U CN206516456U (en) | 2017-02-17 | 2017-02-17 | A kind of three parallel reactors and current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206516456U true CN206516456U (en) | 2017-09-22 |
Family
ID=59866587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720143949.6U Active CN206516456U (en) | 2017-02-17 | 2017-02-17 | A kind of three parallel reactors and current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206516456U (en) |
-
2017
- 2017-02-17 CN CN201720143949.6U patent/CN206516456U/en active Active
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