CN105895328B - Three-phase five-limb iron core and stationary electromagnetic equipment - Google Patents
Three-phase five-limb iron core and stationary electromagnetic equipment Download PDFInfo
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- CN105895328B CN105895328B CN201610066154.XA CN201610066154A CN105895328B CN 105895328 B CN105895328 B CN 105895328B CN 201610066154 A CN201610066154 A CN 201610066154A CN 105895328 B CN105895328 B CN 105895328B
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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
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or 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
- H01F27/24—Magnetic cores
- H01F27/25—Magnetic cores made from strips or ribbons
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Abstract
The present invention provides a kind of three-phase five-limb iron core and stationary electromagnetic equipment, and it can relax the flux concentrating in the iron core in center, so as to prevent the iron core from overheating.4 Wound cores (1) for forming three-phase five-limb iron core (10) are arranged in a row in a manner of the peripheral part of mutually adjacent Wound core (1) is in contact with each other, in the core portion convolute coil that the peripheral part of the mutually adjacent Wound core (1) is in contact with each other, respectively constitute U phases, V phases, the magnetic pole of W phases, and, in the yoke portion as the part beyond these magnetic poles of 4 Wound cores (1), it is provided with the addition iron core (2) in the side in the yoke portion substantially rectangular ring-type as one week, Wound core (1) and additional iron core (2) are clamped and fixed by the strapping elements of rope form or adhesive tape-like (3).
Description
Technical field
Stationary electromagnetic equipment the present invention relates to three-phase five-limb iron core and using three-phase five-limb iron core.
Background technology
The iron core of stationary electromagnetic equipment (transformer, reactor etc.) is thin by having used in order to suppress to be vortexed caused loss
The Wound core of banding magnetic material is formed.Herein, thin ribbon shaped magnetic material is by very thin electromagnetic steel plate, amorphous, nanocrystalline conjunction
The low-loss magnetic material such as gold is formed as obtained from strip of the thickness below 100 μm.By such thin ribbon shaped magnetic material
Overlying multiple layers after being cut off by defined length, the iron core of the U-shaped with the open ends such as junction surface of splicing is formed, is inserted from open end
After entering coil, the open end is closed, thus forms the so-called Wound core of circular ring-type or substantially rectangular ring-type.
Three phase static electromagnetic equipment, it is multiple and structure by the way that Wound core as the above with three-phase coil is arranged
Into, its configure constructive method in, there is two kinds of three-phase three-limb and three-phase five-limb.There is lateral column in the both sides of three-phase coil
Three-phase five-limb iron core, compared with the three-phase three-limb without lateral column, although framework width become can suppress greatly
Highly.Therefore, three-phase five-limb iron core is intended especially for needing the purposes of framework step-down, in addition, because steady when setting
It is qualitative advantageous, so being used more in large-scale three phase static electromagnetic equipment.In addition, there is use disclosed in patent document 1
The example (Fig. 1~Figure 19 with reference to patent document 1 etc.) of the manufacture method of the transformer of Wound core.
In addition, three-phase five-limb iron core is not limited only to, in general stationary electromagnetic equipment, because the leakage field from coil
It is logical to be interlinked with periphery works such as the fixture class of iron core and containing boxs and produce stray loss, so disclosed in many documents
There is the technology suppressed to this.Such as " in the section iron of L-shaped in patent document 2, is recorded to reduce stray loss
The surface of core clamping element 17,18 sets the magnetic shield 20,21 of high magnetic permeability, in the table of flat iron core clamping element 19,19
Face sets the magnetic shield 22,22 of high magnetic permeability, and magnetic shield 20,22,21 is around inner side winding 15 and outside winding 16
Form closed magnetic circuit." (with reference to the paragraph 0020, Fig. 4 of patent document 2).
Using the stationary electromagnetic equipment of the three-phase alternating current of three-phase five-limb iron core, magnetic between U phases, W phase coils with both sides
The big feature of the magnetic resistance (reluctance) on road.Therefore, do not flowed between U phases, the magnetic pole of W phases by magnetic flux caused by these coils
Dynamic, its majority is flowed into the magnetic pole of the V phases in center.As a result, flux concentrating is produced in the magnetic pole of the V phases in center in the iron core
Raw loss (open circuit loss such as magnetic hystersis loss) increase.That is, in the existing stationary electromagnetic equipment using three-phase five-limb iron core,
The increase of the open circuit loss caused by flux concentrating, technology as the iron core hot-spot of particularly central V phases be present
Problem.
And in patent document 1,2, for flux concentrating in center V phases magnetic pole iron core and due to open circuit loss and
Make the technical problem of iron core hot-spot, without any record.In addition, in patent document 2, as with the reality in the present invention
The inscape that the addition iron core 2 (reference picture 1 etc.) described in detail in mode is structurally similar is applied, discloses magnetic shield
20、22、21.But the magnetic shield 20,22,21 is to be used to reduce stray loss caused by leakage magnetic flux, prevents iron core clamping element
17th, the part of 18 etc. overheat, and be not intended to mitigation magnetic flux and concentrate and prevent to the central iron core of three-phase five-limb iron core
It is overheated.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2003-133141 publications
Patent document 2：Japanese Unexamined Patent Publication 2002-075752 publications
The content of the invention
The technical problems to be solved by the invention
In view of prior art problem as the above, it is an object of the present invention to provide can relax by three-phase alternating current
Magnetic flux caused by coil is concentrated to the iron core in center, so as to prevent from the three-phase five-limb iron core of iron core overheat and use to be somebody's turn to do
The stationary electromagnetic equipment of three-phase five-limb iron core.
Technical teaching for solving the problem was
The three-phase five-limb iron core of invention is characterised by, including：Wound core group, it is by thin ribbon shaped magnetic by 4
Overlapping material multilayer and the Wound core of substantially rectangular ring-type formed, are connect each other with the peripheral part of mutually adjacent Wound core
Tactile mode configures in a row and composition；With the second iron core, it is mounted on the side in yoke portion across insulating element
Face, wherein, above-mentioned yoke portion forms 3 to form removing in the core portion of each Wound core of above-mentioned Wound core group
Part beyond the core portion of magnetic pole, above-mentioned 3 magnetic poles are the peripheral part by above-mentioned mutually adjacent Wound core respectively
Be in contact with each other and convolute coil and form.
The effect of invention
In accordance with the invention it is possible to provide a kind of three-phase five-limb iron core and the stationary electromagnetic using the three-phase five-limb iron core
Equipment, it can relax the magnetic flux caused by the coil of three-phase alternating current and be concentrated to the iron core in center, so as to prevent the iron core
Overheat.
Brief description of the drawings
Fig. 1 is the example of the stereogram of the structure for the three-phase five-limb iron core for representing the first embodiment of the present invention.
Fig. 2 is the example using the stereogram of the stationary electromagnetic equipment of Fig. 1 three-phase five-limb iron core.
Fig. 3 is the Wound core for including additional iron core for the top edge for showing schematically the stationary electromagnetic equipment positioned at Fig. 2
Yoke portion cross section structure example figure.
Fig. 4 is that the example of the cross section structure in the yoke portion of the top edge of the stationary electromagnetic equipment according to Fig. 3 represents to clamp
The figure of other examples of fixing wound iron core and additional iron core.
Fig. 5 is the stationary electromagnetic equipment of the three-phase five-limb iron core used as the object of 3 D electromagnetic field simulation analysis
Top half longitudinal section example.
Fig. 6 is the figure of the example for the result for representing 3 D electromagnetic field simulation analysis.
Fig. 7 is the figure of the other examples for the result for representing 3 D electromagnetic field simulation analysis.
Fig. 8 is the example of the stereogram of the structure for the three-phase five-limb iron core for representing second embodiment of the present invention.
Fig. 9 is the example of the stereogram of the structure for the three-phase five-limb iron core for representing third embodiment of the present invention.
The explanation of reference
1 Wound core,
1a unit Wound cores,
2nd, 2a, 2b add iron core (the second iron core),
3 strapping elements,
4a high-tension coils,
4b low-voltage coils,
5a high-field electrodes,
5b low-field electrodes,
6th, 6a insulating elements,
7 fixtures,
8 studs,
10th, 10a, 10b three-phase five-limb iron core,
20 stationary electromagnetic equipment.
Embodiment
Hereinafter, embodiments of the present invention are described in detail referring to the drawings.In addition, to each accompanying drawing, to common structure
Identical reference is marked into key element, the repetitive description thereof will be omitted.
(first embodiment)
Fig. 1 is the example of the stereogram of the structure for the three-phase five-limb iron core 10 for representing the first embodiment of the present invention,
Fig. 2 is the example of the stereogram for the stationary electromagnetic equipment 20 for representing the three-phase five-limb iron core 10 using Fig. 1.In addition, in this reality
Apply in mode, for convenience of description, stationary electromagnetic equipment 20 is the transformer of three-phase alternating current, but can also be three-phase alternating current
Reactor etc..
As shown in figure 1, the three-phase five-limb iron core 10 of present embodiment is arranged by the Wound core 1 of substantially rectangular ring-type
Set 4 and be configured to ladder shape.Herein, Wound core 1 is will to be made up of very thin electromagnetic steel plate, amorphous, nanometer crystal alloy etc.
Thin ribbon shaped magnetic material overlying multiple layers and form.Now, 4 Wound cores 1 are with the side surface part of the ring of each Wound core 1
The mode contacted with roughly the same face is arranged in a row, and with the outer of Wound core 1 mutually adjacent in the lateral direction
The mode that all portions are in contact with each other configures.That is, 4 Wound cores 1 are laterally configured in a face to a row in ladder shape.In addition,
In this manual, as the term for representing direction, use is upper and lower, front, rear, left and right, and these directions for example refer in Fig. 1
In the direction of arrow that lower-left represents.In addition, in the present embodiment, three-phase five-limb iron core 10 is characterised by also including conduct
The addition iron core 2 of second iron core, on the details of additional iron core 2, illustrated afterwards.
In addition, in Fig. 1, each Wound core 1 is shown as, 2 unit Wound core 1a side surface part relative to each other
Across insulating element 6 engage and formed it is integrated after structure.So, in the present embodiment, Wound core 1 can serve as reasons
Structure obtained from multiple unit Wound core 1a are engaged in a manner of side surface part relative to each other is across insulating element 6, or
It can also be the structure being only made up of a unit Wound core 1a.
Herein, in the core portion of 4 Wound cores 1 being arranged in a row, the peripheral part of mutually adjacent Wound core 1
The core portion (part that U phases, V phases and W phases are expressed as in Fig. 1) being in contact with each other, as shown in Figure 2, wind low-voltage line
Enclose 4b and high-tension coil 4a, therefore referred to as magnetic pole.On the other hand, in the core portion of 4 Wound cores 1 being arranged in a row not
It is that the part of magnetic pole is referred to as yoke portion.
In the present embodiment, as illustrated in figures 1 and 2, in the yoke portion of 4 Wound cores being arranged in a row 1
Side surface part be provided with the addition iron core 2 of substantially rectangular ring-type.That is, additional iron core 2 is arranged in the top of 4 Wound cores 1
The yoke portion on the left side and the right of edge and the Wound core 1 in the yoke portion of lower edge and 2 ends was around one week.
Herein, additional iron core 2 is in the same manner as Wound core 1, by will be by very thin electromagnetic steel plate, amorphous, nanometer crystal alloy
Formed etc. the thin ribbon shaped magnetic material overlying multiple layers of composition.Moreover, form the thin ribbon shaped magnetic material in the yoke portion of Wound core 1
The strip of material, and formation are arranged on the thin of the thin ribbon shaped magnetic material of the addition iron core 2 of the side in the yoke portion of the Wound core 1
Band, the direction of respective strip is identical and the face of strip is almost parallel.In this way, then the magnetic flux in Wound core 1 easily flows into
In additional iron core 2.
Further, in the gap of additional iron core 2 with the side in the yoke portion of Wound core 1 across insulating element 6a (references
Fig. 3, diagram is omitted in fig. 1 and 2), Wound core 1, insulating element 6a and additional iron core 2 are tied up by rope form or adhesive tape-like
Part 3 is fixedly clamped and is formed and be integrated (in Fig. 1 etc., strapping elements 3 is shown as rope form).The tie part being fixedly clamped
Part 3 is made up of nonmagnetic metal, resin, plastics, glass fibre etc..
In addition, in fig. 1 and 2, strapping elements 3 is total to be shown at 12, as long as in fact according to stationary electromagnetic equipment
The strapping elements that 20 size and the weight of Wound core 1 are kept appropriate intensity, fixed with appropriate quantity, its material
Do not limited with quantity.In addition, insulating element 6a is set to suppress the vortex between Wound core 1 and additional iron core 2
, can also there is no insulating element 6a.
Further, as shown in Fig. 2 stationary electromagnetic equipment 20 is rolled up by being expressed as the magnetic pole of U phases, V phases and W phases in Fig. 1
Formed around low-voltage coil 4b and high-tension coil 4a.Moreover, it is respectively arranged with electricity in these low-voltage coils 4b and high-tension coil 4a
Piezoelectricity pole 5b and high-field electrode 5a.But, in the perspective view of fig. 2, high-field electrode 5a configurations are in three-phase five-limb iron core 10
Inboard, do not see therefore without display (reference picture 3).
In addition, stationary electromagnetic equipment 20 for example makes in the following way：By the winding with the junction surface such as splice/dock
Iron core 1 arranges 4, from the open end of Wound core 1 corresponding with U phases, V phases and the respective magnetic pole of W phases insertion low-voltage coil 4b
With high-tension coil 4a, each Wound core 1 of rear enclosed open end (with reference to patent document 1 etc.).Thus, three-phase five-limb iron
Core 10 and stationary electromagnetic equipment 20 almost are completed to make simultaneously.
Fig. 3 is the Wound core 1 for including additional iron core 2 of the top edge for the stationary electromagnetic equipment 20 for showing schematically Fig. 2
Yoke portion cross section structure example figure, such as represent to be expressed as position near A strapping elements 3 in Fig. 2 is set
Cross section structure example.In figure 3, strapping elements 3 is represented with chain-dotted line, and positioned at the front or behind of the sectional position
Low-voltage coil 4b and high-tension coil 4a cross sectional shape represent that voltage electrode 5b and high-field electrode 5a are with thick with long dotted line
Dotted line represents.
Unit Wound core 1a by width W2 thin ribbon shaped magnetic material in a manner of as thickness C2 overlapping winding
And form, 2 unit Wound core 1a are mutually close to across the ground of insulating element 6 of thickness G 2.Further, by the thin of width W
The addition iron core 2 that banding magnetic material is overlapping in a manner of as thickness C and is formed, across thickness G insulating element 6a it is tight
It is attached to by 2 sides of this 2 unit Wound core 1a Wound cores 1 formed.In addition, the strapping elements of rope form or adhesive tape-like
3 are arranged to surround Wound core 1 and additional iron core 2, and these Wound cores 1 and additional iron core 2 are fixedly clamped.
Herein, as long as exceeding from Wound core 1 of the width W than low-voltage coil 4b and high-tension coil 4a of additional iron core 2
Amount D is small, and the framework volume of stationary electromagnetic equipment 20 does not just increase.In addition, in figure 3, although the thickness C of additional iron core 2 is represented
Situation about being equal to each other for the rolling thickness C2 with Wound core 1, as long as but can rightly ensure with low-field electrode 5b's
Insulation distance, can also be smaller than rolling thickness C2, in the case where the size of framework has surplus, compares winding with may be reversed
Thickness C2 is big.
In addition, as shown in figure 3, a pair of low-field electrode 5b being connected with low-voltage coil 4b are in order to ensure with adding iron core 2
Insulation distance and by carry out warpage processing, drawn compared with being provided with the yoke portion of Wound core 1 of additional iron core 2 to upside.
In addition, herein, in order to reduce Joule heat caused by high current, low-voltage coil 4b is set to be rolled up compared with high voltage coil 4a in inner side
Around.
Fig. 4 is that the example of the cross section structure in the yoke portion of the top edge of the stationary electromagnetic equipment 20 according to Fig. 3 represents to roll up
Around iron core 1 and the figure of the other examples being fixedly clamped of additional iron core 2.In this embodiment, Wound core 1 and chased after as being fixedly clamped
Add the part of iron core 2, the fixture 7 and stud 8 of tabular are used without using strapping elements 3.
As shown in figure 4, in 2 additional iron cores 2 of 2 side surface parts that 2 Wound cores 1 are arranged on across insulating element 6a
Outside side surface part, be provided with a pair of fixtures 7.Moreover, a pair of fixtures 7 are connected at least through 2 studs 8
Connect.Thus, by clamping stud 8, so as to press additional iron core 2, the additional quilt of iron core 2 from outside as a pair of fixtures 7
It is fixedly clamped in Wound core 1.
Then, the effect of present embodiment is illustrated using the result of 3 D electromagnetic field simulation analysis.Fig. 5 is conduct
The vertical of the top half of the stationary electromagnetic equipment 20 for the three-phase five-limb iron core that the object of 3 D electromagnetic field simulation analysis uses cuts
The example of face figure.In addition, so-called three-phase five-limb iron core 20 is transformer herein.Moreover, in 3 D electromagnetic field emulation point
In analysis, the up-down symmetry of the shape of the stationary electromagnetic equipment 20 of three-phase five-limb iron core is considered, to from the center of magnetic pole
Only model implementation electromagnetic field analysis calculating is splitted in the 1/2 of top half.In addition, in electromagnetic field analysis calculating, calculate in Fig. 5
The stray field for each point on line segment B-B ' drawn, its result are aftermentioned.
In the 3 D electromagnetic field simulation analysis, it is assumed that the material for forming Wound core 1 and additional iron core 2 has saturation magnetic
Flux density is the characteristic of 1.63T non-crystaline amorphous metal (specifically, Hitachi Metal Co., Ltd. 2605HB1M types non-crystaline amorphous metal).
In addition, it is specified that for example following table of the various sizes for forming the Wound core 1 of stationary electromagnetic equipment 20 and size of additional iron core 2 etc.
Shown in 1.
[table 1]
| Reference | Size (mm) | Reference | Size (mm) |
| C | 104 | L | 216 |
| C2 | 104 | G2 | 25 |
| W | 50 | G3 | 8 |
| W2 | 171 | S | 1,790 |
| H | 532 | E1 | 284 |
| H2 | 397 | E2 | 183 |
Table 1 and Fig. 5 more than, represent that the reference H of size represents the half value of the thickness of Wound core 1, accompanying drawing mark
Remember that H2 represents the placement of the height of the low-voltage coil 4b and high-tension coil 4a wound on 3 magnetic poles.In addition, reference E1 is represented
The inside dimension of the orientation of 2 Wound cores 1 in inner side, reference E2 along above-mentioned 4 Wound cores 1 shown in Fig. 5
Represent the inside dimension of the orientation along the Wound core 1 of outside 2 (right-hand member and left end).In addition, in the magnetic pole of inner side 3,
Since it is desired that winding low-voltage coil 4b and high-tension coil 4a, so size E1 is bigger than size E2.
Further, the peripheral part of 4 Wound cores 1 is not in direct contact with one another herein, but across a little gap size
It is connected G3.Thus, along the orientation of the Wound core 1 of winding low-voltage coil 4b and high-tension coil 4a 3 magnetic poles
Size L be expressed as L=2 × C2+G3.Moreover, it is expressed as S=3 × L+ along the total length S of 4 Wound cores 1 of orientation
2×(C2+E1+E2)。
It is and attached shown in Fig. 3 in addition, in reference shown in table 3, represent the reference of not illustrated size in Fig. 5
Icon note is identical.That is, reference number C represents the thickness of additional iron core 2, and reference W represents the width of additional iron core 2, accompanying drawing
W2 is marked to represent unit Wound core 1a width, reference G2 represents the insulation being clipped between 2 unit Wound core 1a
The thickness of part 6.
In addition, carry out the high-tension coil 4a and low-voltage coil 4b set during the 3 D electromagnetic field simulation analysis excitation condition
As shown in following table 2.
[table 2]
| Project | High pressure (once) coil | Low pressure (secondary) coil |
| Voltage | 6,600V | 240V |
| Electric current | 50.5A | 1,391A |
| The number of turns | 358 | 13 |
| Resistance | 0.48Ω | 0.0005Ω |
Fig. 6 is the figure of the example for the result for representing 3 D electromagnetic field simulation analysis.In Fig. 6,3 D electromagnetic field simulation analysis
Result as represent center magnetic pole (magnetic pole that V phases are expressed as in Fig. 1) top setting vertical direction line segment B-
B ' (length 400mm：Reference picture 5) on the chart of change of size of stray field of each position represent.That is, Fig. 6 chart
Transverse axis represent center magnetic pole above line segment B-B ' on position, the longitudinal axis represent stray field intensity H.
In Fig. 6 chart, the insulating element 6a clipped by Wound core 1 and additional iron core 2 thickness W becomes as the 3rd
Dynamic parameter uses.That is, broken line 50 shown in Fig. 6 represent to be not provided with to add iron core 2 as comparative example in the case of stray field
Change, broken line 50a, 50b, 50c represent that insulating element 6a thickness G is respectively in the case where being provided with additional iron core 2
The change of stray field when 6.5mm, 1mm, 0.2mm.
It was found from the result of 3 D electromagnetic field simulation analysis shown in Fig. 6 more than, stray field is near Wound core 1
B points it is maximum, reduced with Wound core 1 is left.In addition understand, in the case where being provided with additional iron core 2, with being not provided with
The situation of additional iron core 2 is compared, and stray field is reduced to less than half.It is further known that pressed from both sides by Wound core 1 and additional iron core 2
The insulating element 6a the smaller stray field of thickness G is with regard to smaller.
The big iron core for representing to use in the stationary electromagnetic equipment of stray field typically in the stationary electromagnetic equipment such as transformer
Generation flux concentrating.That is, when increasing the magnetic flux density in iron core due to flux concentrating, close to during magnetic saturation, magnetic susceptibility drops
It is low.As a result, magnetic flux is easily leaked to outside iron core, the stray field of the neighboring area of iron core becomes big.That is, the knot shown in Fig. 6
Fruit is necessarily represented by setting additional iron core 2 so that the flux concentrating in central magnetic pole for being expressed as V phases in Fig. 1 is alleviated.
In addition, the mitigation in the flux concentrating of the magnetic pole of the V phases in center can also illustrate as described below.That is, by setting
Additional iron core 2 is put, the magnetic resistance (reluctance) being expressed as in Fig. 1 between the magnetic pole of U phases and W phases reduces.Therefore, in U phases and W phases
Magnetic flux caused by respective magnetic pole not only to center V phases magnetic pole and also the W phases of opposite side and the magnetic pole of U phases are also held to each other
Easily flowing.Thus, relaxed in the flux concentrating of the magnetic pole of the V phases in center.
In addition, by Wound core 1 and the smaller stray field of thickness G for adding the insulating element 6a that iron core 2 clips with regard to smaller, this
Because the smaller Wound core 1 of insulating element 6a thickness G is with the additional increased magnetic resistance (reluctance) of iron core 2 with regard to smaller, institute
Can easily understand that.Thus, insulating element 6a thickness G is smaller, relaxes the flux concentrating in the magnetic pole of the V phases in center
Effect is bigger.
Fig. 7 is the figure of the other examples for the result for representing 3 D electromagnetic field simulation analysis.In Fig. 7, the transverse axis table of chart
Show the insulating element 6a clipped by Wound core 1 with additional iron core 2 thickness G, the longitudinal axis represents the stationary electromagnetic of present embodiment
The open circuit loss Wi of equipment 20 (transformer).Herein, open circuit loss Wi is complete based on being obtained by 3 D electromagnetic field simulation analysis
Excitation condition shown in the loss characteristic and table 2 of magnetic flux distribution, the core material (above-mentioned non-crystaline amorphous metal) in iron core
(wherein, the frequency of coil current is 50Hz) is calculated obtained from open circuit loss caused by whole iron core.But, Fig. 7
The open circuit loss Wi of the longitudinal axis of chart value is to regard the open circuit loss of the transformer of the comparative example of no additional iron core 2 as 100
In the case of relative value represent.
The stationary electromagnetic equipment 20 (transformer) for possessing additional iron core 2 of present embodiment, with showing for no additional iron core 2
Some transformers are compared to weight increase, but as shown in fig. 7, open circuit loss Wi is reduced.Moreover, in insulating element 6a thickness G
For 0.2mm when, open circuit loss Wi also reduces about 10%.
But coil current frequency in the case of certain, open circuit loss Wi's is square proportional to magnetic flux
Part is big.Thus, the open circuit loss Wi for the whole iron core for possessing additional iron core 2 and realizing reduction alternatively means one
The flux concentrating of part magnetic pole has been alleviated.In addition, so-called a part of magnetic pole is V phases are expressed as in Fig. 1 central herein
Magnetic pole, this point can also understand from explanation before.
As described above, according to present embodiment, the flux concentrating in the magnetic pole of the V phases in center can be relaxed.Therefore, it is possible to
Prevent due to flux concentrating and the overheat of the magnetic pole of the caused central V phases.
(second embodiment)
Fig. 8 is the example of the stereogram of the structure for the three-phase five-limb iron core 10a for representing second embodiment of the present invention.
As shown in figure 8, the three-phase five-limb iron core 10a of present embodiment is in addition to additional iron core 2a structure difference, shown in Fig. 1
First embodiment three-phase five-limb iron core 10 it is identical.That is, as first embodiment, three-phase five-limb iron core 10a
By spread configuration, 4 form thin ribbon shaped magnetic material overlying multiple layers to be configured to the Wound core 1 of substantially rectangular ring-type.
On the other hand, additional iron core 2a is by the way that thin ribbon shaped magnetic material overlying multiple layers are formed, but it is shaped as in thin ribbon shaped magnetic
Property material with square rod shape long on direction.
In the present embodiment, using addition the iron core 2a, each additional iron core 2a of square rod shape long as more than 4
It is arranged in the yoke portion of the Wound core 1 for the magnetic pole for forming U phases, V phases and W phases, the magnetic of the top edge of the magnetic pole and lower edge
2 sides in yoke portion.Now, in the gap of Wound core 1 and additional iron core 2a, pressed from both sides in the same manner as the situation of first embodiment
The insulating element 6a (reference picture 3, in fig. 8 omit diagram) of thickness G, Wound core 1 and additional iron core 2a by rope form or
The non magnetic strapping elements 3 of adhesive tape-like is clamped and fixed.In addition, in fig. 8, strapping elements 3 is total to be shown at 8, but in fact
As long as keep suitable according to the size of the stationary electromagnetic equipment using three-phase five-limb iron core 10a and the weight of Wound core 1
When intensity come with the strapping elements of appropriate quantity fixation, its material and quantity do not limit.
In the three-phase five-limb iron core 10a formed like that more than having used stationary electromagnetic equipment, even if degree be present
On difference, the magnetic resistance (reluctance) that additional iron core 2a makes to be expressed as between the magnetic pole of U phases and W phases reduces this point also not
Become.That is, because additional iron core 2a makes the magnetic flux of the magnetic pole of the V phases in inflow center be dispersed to other magnetic poles, in this embodiment party
Also the effect of the overheat of the magnetic pole for the V phases for preventing center can be obtained in formula.
In addition, in the present embodiment, additional iron core 2a weight is lighter than the addition iron core 2 in first embodiment.Cause
And set in the case that present embodiment is suitable for the weight of stationary electromagnetic equipment to be suppressed with the stationary electromagnetic large-scale to Large Copacity
It is standby.
(the 3rd embodiment)
Fig. 9 is the example of the stereogram of the structure for the three-phase five-limb iron core 10b for representing third embodiment of the present invention.
As shown in figure 9, the three-phase five-limb iron core 10b of present embodiment is in addition to additional iron core 2b structure difference, shown in Fig. 1
First embodiment three-phase five-limb iron core 10 it is identical.That is, as first embodiment, three-phase five-limb iron core 10b
By spread configuration, 8 form thin ribbon shaped magnetic material overlying multiple layers to be configured to the Wound core 1 of substantially rectangular ring-type.
On the other hand, additional iron core 2b is by the way that thin ribbon shaped magnetic material overlying multiple layers are formed, but it is shaped as rectangular-shape.
In the present embodiment, using the addition iron core 2b of 12 rectangular-shapes.Moreover, each additional iron core 2b is arranged to
Forming U phases, V phases and the mutual adjacent top edge of 2 Wound cores 1 of the respective magnetic pole of W phases and the yoke portion of lower edge
Side, 2 Wound cores 1 are connected with each other.Now, in the gap of Wound core 1 and additional iron core 2b, implement with first
The situation of mode similarly clips the insulating element 6a (reference picture 3, in fig.9 omit diagram) of thickness G, Wound core 1 and chases after
Iron core 2b is added to be clamped and fixed by the non magnetic strapping elements 3 of rope form or adhesive tape-like.It is in addition, total in Fig. 9, strapping elements 3
Show at 12, as long as in fact according to the size of the stationary electromagnetic equipment using three-phase five-limb iron core 10b and winding iron
The weight of core 1 keeps appropriate intensity with the strapping elements of appropriate quantity fixation, and its material and quantity just do not limit
It is fixed.
The three-phase five-limb iron core 10b formed like that more than use stationary electromagnetic equipment, even if existing in degree
Difference, it is also constant that the magnetic resistance (reluctance) that additional iron core 2b makes to be expressed as between the magnetic pole of U phases and W phases reduces this point.That is,
Because additional iron core 2b makes the magnetic flux of the magnetic pole of the V phases in inflow center be dispersed to other magnetic poles, in the present embodiment
The effect of the overheat of the magnetic pole for the V phases for preventing center can be obtained.
In addition, in the present embodiment, additional iron core 2b weight not only than the addition iron core 2 in first embodiment and
It is and also lighter than the addition iron core 2a in second embodiment.Thus, present embodiment is suitable for stationary electromagnetic equipment to be suppressed
The situation of weight and the stationary electromagnetic equipment large-scale to Large Copacity.
In addition, the present invention is not limited to embodiments described above and variation, also comprising various deformations
Example.For example, above-mentioned embodiment and variation is described in detail to illustrate to be readily apparent that the present invention, but
It is to be not necessarily limited to include illustrated all structures.Furthermore it is possible to one by the structure of an embodiment/variation
Partial replacement is the structure of another embodiment/variation, additionally it is possible in the structure of an embodiment/variation
The middle structure for adding another embodiment/variation.A furthermore it is possible to part for the structure to each embodiment/variation
The addition of structure contained in other embodiment/variation is carried out, eliminates, replace.
Claims (6)
- A kind of 1. three-phase five-limb iron core, it is characterised in that including：Wound core group, it is the winding iron for the substantially rectangular ring-type for being made up of 4 thin ribbon shaped magnetic material overlying multiple layers Core, configure in a manner of the peripheral part of mutually adjacent Wound core is in contact with each other in a row and formed；WithSecond iron core, it is mounted on the side surface part in yoke portion across insulating element, wherein, the yoke portion is composition The part in addition to the core portion for forming 3 magnetic poles in the core portion of each Wound core of the Wound core group, 3 magnetic poles are to be in contact with each other by the peripheral part of the mutually adjacent Wound core and convolute coil is formed respectively ,Second iron core is the iron core of rectangular-shape, will be mutually adjacent in the upper portion of 3 magnetic poles and lower section The mode that the yoke portion of the Wound core is connected to each other two-by-two, the side surface part in these yoke portions have been disposed separately 12 each other It is individual.
- 2. three-phase five-limb iron core as claimed in claim 1, it is characterised in that：Second iron core is fixed on the Wound core using the nonmagnetic strapping elements of rope form or adhesive tape-like Side surface part.
- 3. three-phase five-limb iron core as claimed in claim 1, it is characterised in that：The second iron core utilization is respectively arranged at the outer of second iron core of 2 side surface parts of the configuration in the Wound core The fixture of 2 side surface parts of side, and by the fixture for being arranged at 2 side surface parts of second iron core connects and clamps double Hook bolt, it is fixed on the side surface part of the Wound core.
- 4. three-phase five-limb iron core as claimed in claim 1, it is characterised in that：Second iron core is the iron core for forming thin ribbon shaped magnetic material overlying multiple layers.
- 5. three-phase five-limb iron core as claimed in claim 4, it is characterised in that：Form the direction of strip and the direction in face of the thin ribbon shaped magnetic material of second iron core, with composition be mounted with this second The direction of the strip of the thin ribbon shaped magnetic material of the Wound core of the near sites of iron core and the direction in face are roughly the same.
- A kind of 6. stationary electromagnetic equipment, it is characterised in that：The line of three-phase alternating current is wound in 3 magnetic poles of three-phase five-limb iron core according to any one of claims 1 to 5 Enclose and form.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015027379A JP6397349B2 (en) | 2015-02-16 | 2015-02-16 | Three-phase five-legged iron core and stationary electromagnetic equipment |
| JP2015-027379 | 2015-02-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105895328A CN105895328A (en) | 2016-08-24 |
| CN105895328B true CN105895328B (en) | 2017-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610066154.XA Expired - Fee Related CN105895328B (en) | 2015-02-16 | 2016-01-29 | Three-phase five-limb iron core and stationary electromagnetic equipment |
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| Country | Link |
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| JP (1) | JP6397349B2 (en) |
| CN (1) | CN105895328B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6836359B2 (en) * | 2016-08-30 | 2021-03-03 | 東芝産業機器システム株式会社 | Transformers, transformer manufacturing methods |
| JP2018117061A (en) | 2017-01-19 | 2018-07-26 | 株式会社日立製作所 | Iron core for stationary induction electric appliance |
| JP7300270B2 (en) * | 2019-01-18 | 2023-06-29 | 株式会社日立製作所 | Iron core for stationary induction electric machine |
| JP7149908B2 (en) * | 2019-09-06 | 2022-10-07 | 株式会社日立産機システム | Static induction device |
| JP7356852B2 (en) * | 2019-09-25 | 2023-10-05 | 株式会社日立製作所 | Iron core for stationary induction appliances |
| CN111411930B (en) * | 2020-03-26 | 2020-10-16 | 中国石油大学(北京) | Visual dynamic filtration and drainage simulation device and simulation method for tight gas reservoir fracturing fluid |
| CN112285431B (en) * | 2020-10-14 | 2023-06-23 | 武汉钢铁有限公司 | Single-frame iron core loss measuring device and method for three-dimensional wound iron core transformer |
| CN117334433B (en) * | 2023-12-01 | 2024-03-01 | 保定市恒光电气机械有限公司 | Miniaturized high-frequency high-voltage transformer |
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| JP2002075752A (en) * | 2000-08-25 | 2002-03-15 | Hitachi Ltd | Stationary induction apparatus |
| JP2003133141A (en) * | 2001-10-22 | 2003-05-09 | Aichi Electric Co Ltd | Wound core transformer and its manufacturing method |
| CN201066611Y (en) * | 2007-04-13 | 2008-05-28 | 佛山市伊戈尔电业制造股份有限公司 | A non crystal alloy transformer |
| CN103093942A (en) * | 2011-11-01 | 2013-05-08 | 株式会社日立产机系统 | Amorphous core transformer |
| CN103794340A (en) * | 2013-12-03 | 2014-05-14 | 柳州市五环水暖器材经营部 | Three-phase and five-column planar rolled iron core and manufacturing method for same |
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| JPS50157422U (en) * | 1974-06-13 | 1975-12-26 | ||
| JPS56126908A (en) * | 1980-03-12 | 1981-10-05 | Meidensha Electric Mfg Co Ltd | Core for transformer |
| JPS59121809A (en) * | 1982-12-27 | 1984-07-14 | Mitsubishi Electric Corp | Core supporting method |
| JPH05234783A (en) * | 1991-12-06 | 1993-09-10 | Toshiba Corp | Three-phase transformer |
| JP2005333057A (en) * | 2004-05-21 | 2005-12-02 | Toshiba Corp | Transformer iron core and three-phase transformer |
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- 2016-01-29 CN CN201610066154.XA patent/CN105895328B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB693288A (en) * | 1950-05-04 | 1953-06-24 | British Thomson Houston Co Ltd | Improvements in and relating to electric induction apparatus |
| JP2002075752A (en) * | 2000-08-25 | 2002-03-15 | Hitachi Ltd | Stationary induction apparatus |
| JP2003133141A (en) * | 2001-10-22 | 2003-05-09 | Aichi Electric Co Ltd | Wound core transformer and its manufacturing method |
| CN201066611Y (en) * | 2007-04-13 | 2008-05-28 | 佛山市伊戈尔电业制造股份有限公司 | A non crystal alloy transformer |
| CN103093942A (en) * | 2011-11-01 | 2013-05-08 | 株式会社日立产机系统 | Amorphous core transformer |
| CN103794340A (en) * | 2013-12-03 | 2014-05-14 | 柳州市五环水暖器材经营部 | Three-phase and five-column planar rolled iron core and manufacturing method for same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6397349B2 (en) | 2018-09-26 |
| JP2016152248A (en) | 2016-08-22 |
| CN105895328A (en) | 2016-08-24 |
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