CN105990002A - Stereo full-symmetric iron core three-phase electric reactor - Google Patents

Abstract

A stereo full-symmetric iron core three-phase electric reactor is an important technical progress in the field of manufacturing of middle-and-large-sized electric reactors. A new magnetic circuit structure can effectively eliminate voltage and current unbalance caused by asymmetry of an electric reactor magnetic circuit. A zero-clearance magnetic circuit serves as a basic structure technology, an iron core and an iron yoke are manufactured independently, specific structures, technical processing and manufacturing methods of various lamination type, winding type even hybrid iron cores and iron yokes with lowest iron loss, shortest working time and manufacturing methods are obtained, the characteristic of combining creativity and practicality is achieved, the technology is mature, and the electric reactor can be used in the production field quickly.

Description

Three-dimensional holohedral symmetry iron core three-phase reactor

Invention field

The invention belongs to the reactor technical field in electricity, relate to magnetic structure and the manufacture of reactor Technique, specifically, is the three-phase reactor creating a big class solid new construction new technology.

Background technology

Reactor is a kind of important electric device, is often referred to be provided that the device of induction reactance in the narrow sense.? Power system, power electronic system, electronic circuit are extensively applied, be a class indispensable or electrician Device and electronic component.

The ultimate principle of reactor is by electromagnetic induction, alternating current presents a kind of impedance or plays limit Stream effect.When the alternating current of certain frequency enters reactor, reactor i.e. produces induced voltage, Induced voltage opposing faradic current, plays a part current limliting.The overwhelming majority making electric current is merely creating The conversion of electromagnetic energy, does not make useful work, so being a kind of reactive current, or claims inductance current. The part of work done is only the loss that winding resistance produces, referred to as copper loss, and magnet eddy current and magnetic hysteresis etc. The iron loss caused.

As a kind of electromagnetic induction device, in order to obtain bigger inductance value, it is made more compact, or is Making the winding magnetic flux be limited in certain space, it is often necessary to arrange iron core in winding, this just becomes Iron core reactor, the reactor adding iron core considerably reduces copper consumption and the copper loss of reactor, also drops Low manufacturing cost, therefore obtains extensively application.

The structure of typical high power plane three-phase reactor, the magnetic circuit of mesophase is short, gap is few, and The magnetic circuit of two limit phases is long, and gap is the most, causes three congenital asymmetric on magnetic structure, Causing the imbalance of three-phase excitation current, unbalanced three-phase current can cause again negative-sequence current, to electricity Net and electromotor produce harmful effect, become great restraining factors of normal electricity supply.

For reducing magnetic energy loss, reaching three-phase equilibrium, small three-phase transformator is changed by lamination plane Enter for three-dimensional R type wound core structure, solve the congenital asymmetric of magnetic structure.But reactor Generally requiring the magnetic circuit of anti-saturation, R type wound core structure exactly lacks this ability.And laminated type Still continue to use fine stacking technique and ensure the minimum clearance of magnetic circuit, but the man-haur efficiency of this technique is low, The artificial technological level of quality heavy dependence, cannot be protected very well, it is necessary to take new approaches, newly tie The solution of structure essence in addition.Apparently, how reactor is improved to solid type from plane, for thoroughly Solve the three-phase equilibrium problem of reactor, particularly in high-power, superpower application aspect, existing Product and technology still have suitable distance, shoulder heavy responsibilities.

Summary of the invention

The purpose of the present invention, is the reform by reactor magnetic structure, finds a more preferable approach, Solve magnetic circuit asymmetry problem；By new construction, the province solving reactor can potentiation problem；With Time simplify three-dimensional winding around reactor technique, reduce the manufacturing cost of reactor.The present invention relates to reactance The novelty of the significant improvement of the magnetic structure of device, lamination and winding process simplifies, and expands out a class New three-dimensional reactor holohedral symmetry mixed type magnetic circuit.

The present invention is on the basis of reforming multiple transformer magnetic circuit, the structure of transformer magnetic circuit is known Know the reactor applying to have similar magnetic structure.Its basic technology be zero clearance magnetic structure technology and Technique, the technological core of this technology is that magnetic circuit is divided into unshakable in one's determination and iron yoke two large divisions, makes traditional folding Flap-type magnetic circuit and convoluted magnetic circuit technique are simplified, and cost reduces, performance optimization；The most further Create the Three phase reactor solid magnetic circuit knot between laminated type magnetic circuit and convoluted magnetic circuit Structure and technique, will have the two produced new class more new construction core of reactor of having complementary advantages concurrently and be referred to as Mixed type magnetic circuit reactor.

The present invention is achieved in that and a kind of is mainly made up of winding, iron core and the big parts of iron yoke three Three-dimensional iron core three-phase reactor, is characterized in that, reactor has three-dimensional holosymmetric zero clearance magnetic circuit knot Structure；Unshakable in one's determination and iron yoke manufactures closed assemblies as two big separate unit splits.

In the present invention, no matter use lamination, winding-structure or mixed structure, can be at magnetic Obtain holohedral symmetry condition on line structure, make three-phase magnetic circuit reach three-dimensional, solve electric alternate balance Problem；Zero clearance magnetic structure while making reactor holohedral symmetry, have again easy to manufacture, With low cost, quality assurance, the feature of saving of work and time；Additionally, zero clearance magnetic structure also reduces Lamination air-gap quantity and magnetic resistance, reach energy-saving effect.Making novel solid structure iron core is reactor Open a brand-new road to high-power, superpower three-phase equilibrium development, create a collection of being prone to The multi-series new product kind of industrialization.

Accompanying drawing explanation

Fig. 1, existing conventional planar air-gap-free iron core three-phase reactor laminate shape figure.

Fig. 2, existing conventional planar air-gap-free iron core three-phase reactor Analysis of Magnetic Circuit figure.

Fig. 3, the zero clearance magnetic circuit plane iron core three-phase reactor lamination shape without air gap of the present invention Shape figure.

Fig. 4, existing conventional stereo R type three-phase transformer entirety magnetic structure sketch.

Fig. 5, existing conventional stereo R type three-phase transformer magnetic circuit split figure.

Fig. 6, existing conventional stereo R shaped iron core coiling directional diagram.

Fig. 7, the view unshakable in one's determination of three-dimensional laminated type reactor of the present invention.

Fig. 8, the square-section iron yoke view of three-dimensional laminated type reactor.

Fig. 9, three-dimensional laminated type reactor arc section iron yoke view.

Figure 10, core-lamination stack and the iron yoke lamination direction relations figure of the present invention.

Figure 11, rewinding material produce the analyzing chart for reason of vortex flow.

The rewinding material schematic diagram that Figure 12, the manufacture of the present invention complete.

The reactor top view of Figure 13, annular winding iron yoke.

The reactor top view of Figure 14, cylindrical annular inboard triangle winding iron yoke.

Figure 15, the top view with spill circular groove winding iron yoke of the present invention.

Figure 16, magnet partial longitudinal section with spill circular groove iron yoke.

Silicon strip magnetic current orientation and cutting wires relation schematic diagram in Figure 17, existing goods coiled strip.

Relation between Figure 18, the sawing sheet direction using sheet material and magnetic current orientation.

Outside the three-dimensional mixed type three-phase reactor magnet that Figure 19, " wound core+lamination iron yoke " form Shape figure.

Outside the three-dimensional mixed type three-phase reactor magnet that Figure 20, " laminated core+winding iron yoke " form Shape figure.

Figure 21, " upper lamination iron yoke+under wind iron yoke+wound core " three-dimensional mixed type three-phase reactor Device magnet outline drawing.

Detailed description of the invention

Iron core reactor and transformator have common point and similarity on magnetic circuit.Zero clearance magnetic circuit Being intended that of goal in research reduces transformer magnetic circuit gap, to reduce magnetic resistance, to improve transformer efficiency. But innovation more than a year it was verified that magnetic circuit is divided into the unshakable in one's determination and structural reform of iron yoke by such a And process program, the facilitation that transformer device structure, manufacturing process novel aspects are risen, the farthest Exceed well over it and efficiency is improved the contribution made.

Iron core reactor is to reducing the less demanding of magnetic circuit gap, for limiting iron core reactor in practice Entering saturated, iron core reactor also tends to need to set up certain magnetic circuit gap, but zero clearance magnetic circuit The thinking three-dimensional to iron core reactor, but has and the technical meaning of transformator no less important.

To this end, the reactor magnetic structure definition of the present invention is different from conventional reactor, mixed for not producing Confuse, it is necessary to separately make specified below.

In the present invention:

(1) unshakable in one's determination: only refer to the magnetic device being in winding.

Winding (2): refer to the current source of transformator, is the device of reactor alternating current entrance.

Iron yoke (3): refer to make in reactor the magnetic current in iron core to be interconnected, complete the magnetic in loop Device.

Magnetic circuit: refer to the magnetic linkage of reactor, is the reactor whole magnet that includes iron core, iron yoke General name.

In conventional reactor:

Heart portion: also referred to as core, stem, stem stem, is equivalent to the iron core (1) of the present invention.

Yoke portion: also referred to as yoke, refers to the device making iron core complete magnetic linkage in reactor, including upper yoke, under Yoke, may also have return yoke, is equivalent to the iron yoke (3) of the present invention.

Iron core: also referred to as iron core, refers to the magnetic linkage of reactor, whole including reactor core and yoke portion The assembly of magnet, is equivalent to the magnetic circuit of the present invention.

Winding (2): also referred to as coil, defines identical with the winding of the present invention (2).

For adapting to insider's custom, the title of the present invention is still continued to use " iron core " printed words, by this The definition of invention, actually refers to magnetic circuit.

Employing redefines in order to circle of good definition another edition of a book inventive structure is conceptive and prior art Difference, prevent from obscuring.Winding (2) definition in the present invention is identical with conventional reactor, but ferrum The title of the heart is far from each other with tradition, and traditional iron core refers to whole magnetic device, include heart portion and Yoke portion.Traditional three-phase reactor, although the same also like transformator, is formed by many lamination closed assemblies, But heart portion and yoke portion are linked to be common flux path, indivisible, thus iron core also become reactor heart portion and The general name in yoke portion.And the definition of iron core only refers to the magnetic device being in winding in the present invention, quite Why heart portion in traditional definition, redefine, it is therefore an objective to be diverse technique Thinking, becomes the iron core in this definition because being split by the iron core in traditional definition to add upper yoke two big Parts, it is possible to the closed assembly process being combined in heart portion and the yoke portion of original conventional reactor, change Enter iron core and iron yoke split for the present invention and manufacture closed assembly, thus by the difficulty in traditional handicraft operation, Drawback big with cannot ensure precision in quality two, can be transferred through so-called zero clearance magnetic circuit in the present invention Structure technology is overcome improvement.So the reactor technique of the present invention and structure, it is belonging to start Property innovation and creation, therefore must define with different structure to show difference.

In the stacked reactor in widely used, conventional thought always considers reactor heart portion Link together consideration with yoke portion, mutually can be made up by the coordinated transposition closed assembly of lamination aspect Gaping of joints reduces magnetic resistance.But in concrete practice, this idea both can not be greatly decreased gap Magnetic resistance, causes again the very complicated of stacking technique, time-consuming.

By as a example by the miniature transformer that practice confirms, small-sized E type shell type transformer is between having Gap magnetic circuit, to the evolution of the zero clearance magnetic circuit of c-type core type transformer, its essence is cut-parts and closed assembly During uncontrollable magnetic circuit gap, to the conversion of magnetic circuit faying face polish, be typical zero Gap magnetic circuit, represents the direction of new technique structure and technological development, enlightens large-scale reactor also Equally from artificial hand work closed assembly to the improvement of zero clearance magnetic circuit.In order to make iron core and iron yoke Faying face zero clearance closely cooperates, in addition to faying face polish is processed by needs, and how could be Unshakable in one's determination magnetic circuit gap with iron yoke faying face is decreased or even eliminated in actual reactor, how to utilize zero The peculiar structure of gap magnetic circuit, the new construction that cannot use with original lamination combines, should Simple and reasonable, easy construction is easy again, the most prior and final result, is also intended to Reach the more high-tech performance of reactor and reduce material, the target of assembly cost.

Fig. 1 is existing conventional planar air-gap-free iron core three-phase reactor laminate shape figure.

In Fig. 1, the cut-parts of three kinds of specifications, it is combined into a lamination sheets, first folds with two of the left side, Then folding with two of the right, until being laminated to the thickness of regulation, certain this iron core is square-section, Required winding is also rectangle.But, the copper consumption of rectangle winding is more than circular winding, the most uneconomical, Copper consumption is many more means that winding resistance increases, so load loss is big.Add lamination gap Greatly, magnetic resistance is high, and no-load current increases, so open circuit loss is also big, the efficiency of reactor reduces, So core does not the most use rectangle and most uses circle.It is crucial that circular core unshakable in one's determination needs The sizes cut-parts using width different fold, and such cutting and closed assembly will be greatly increased man-hour, The biggest manyfold of difficulty of closed assembly.

In the manufacturing process of circular section core, relating to core-lamination stack closed assembly, to cross range request the highest, First it is to improve assembly precision, to ensure that product has the magnetic circuit gap of minimum, secondly, also to protect Card core builds up one accurately like circular section.In order to prevent deformation, the sending out of the situation such as crooked Raw, often fold one layer, the most each folded be required for carrying out lamination position correction, repair, measure. During closed assembly, in order to ensure certain closed assembly speed, it is necessary to have lamination people and pass sheet people, extremely Many people are wanted jointly to participate in the closed assembly work of an iron core, guarantee work efficiency, labour force's wave less Take very big, finally, also colligation, stand up, inserted sheet, dry, anneal, insulate, sealing etc. Process, takes a lot of work time-consuming the most very much.

Traditional three-phase reactor, although formed by many lamination closed assemblies, but core is linked to be with yoke portion Common flux path, together closed assembly are indivisible, so iron core also becomes reactor core and yoke portion General name, the two closed assembly together, it is big much that difficulty separates independent closed assembly than the two certainly.

Above three stem stem is installed three windings, just becomes a three-phase core type reactor, it Magnetic circuit material is saved, so obtaining in the three-phase voltage system of the whole world than three single-phase reactors of congenerous Obtain and extensively apply.

Fig. 2 is existing conventional planar air-gap-free iron core three-phase reactor Analysis of Magnetic Circuit figure.In figure, Three iron cores (1) are square-section, after being inserted in winding (2) above, by iron yoke (3) by three Core limb is connected to become closed magnetic path.

For convenience, in Fig. 2, analysis conventional three-phase electricity just as a example by simplest rectangular core, is carried out The characteristic of the magnetic circuit of anti-device.First finding, on magnetic circuit, every lamination sheets has the air gap of 7 more than, All there is magnetic resistance in these magnetic circuit gaps, for reducing magnetic resistance, schemes right one layer except levels being used Lamination, in the way of staggered closed assembly, reduces the magnetic resistance of gap location, still must be as far as possible with fine folded Filling clearance control in addition, one has how many lamination sheets, and magnetic circuit gap is just multiplied by how many times, and obtaining is many Big energy is placed on fine closed assembly.

If putting tri-windings of A, B, C in three stem stems from left to right respectively into produce magnetic current, It is found that flow to the magnetic current of B post from A post need to cross 4 gaps, and flow to C post from A post Magnetic current need to cross 6 gaps, and length of magnetic path of its flowing is also big than B phase magnetic current one times, So at the resistance of AC intercolumniation magnetic current apparently higher than AB post, simultaneously it is also seen that, the resistance of B post magnetic current Power is minimum, and path is the shortest.Thus, existing conventional planar iron-core three-phase transformer/reactor magnetic circuit It is congenital asymmetric, then the inductive voltage and current of three-phase windings is also unbalanced.

Fig. 3 is zero clearance magnetic circuit plane iron core three-phase reactor laminate shape figure.

The magnetic circuit of zero clearance magnetic circuit three-phase reactor is in fact simpler than conventional reactor, first It is by iron core and iron yoke closed assembly respectively, heart GUIXIN, and yoke returns yoke, respective closed assembly, and is points 3 5 pieces of unshakable in one's determination and 2 iron yokes separately closed assembly, compared with 5 pieces, the existing technique of closed assembly is held certainly together It is easy to get many.Secondly, its unshakable in one's determination and iron yoke faying face through polish, realize zero clearance magnetic circuit, its Magnetic resistance, exciting current and magnetic loss the most just ratio is relatively low, can reach higher product efficiency.

Compared to common plane type three-phase reactor, comparing from symmetry, zero clearance magnetic circuit is each It is all gaps, equal 4 that phase post flows to its phase post, more outstanding than conventional reactor in symmetry, though So magnetic circuit between AC or long, but at least from magnetic circuit gap, this angle equal is weighed, they Between magnetic resistance difference still little than tradition laminated type structure, symmetrical degree improves, and balance is preferable. This advantage can not be obliterated, and the reasonability of these superior improvement derives from zero clearance magnetic circuit, thus, Zero clearance magnetic circuit is the technical foundation of present configuration.

Although the magnetic circuit gap that reactor is not necessarily increase is worried about, because itself is accomplished by by magnetic circuit The saturated of iron core is avoided in gap, but the symmetry improving iron core reactor has been contributed by zero clearance magnetic circuit Through embodying in the above description.

The zero clearance magnetic circuit reactor of air-gap-free, at some not by magnetic field in the saturated reactor affected, Part in parallel reactor such as still has the energy-saving effect reducing magnetic resistance, increasing inductance value.If Need to increase width of air gap, as long as padding the epoxy insulating board of desired thickness between iron yoke unshakable in one's determination Have been resolved as what is desired, be light as easily lifted.

But the above-mentioned structure to balance, is not the most holosymmetric magnetic structure, simply between zero The good effect that gap magnetic circuit is brought.

Need below to further illustrate expansion, be how to produce one by zero clearance magnetic circuit scheme to lead to Shortcut to holohedral symmetry reactor.In order to more preferably introduce this shortcut, first with existing three-dimensional winding around The magnetic circuit of formula R type three-phase transformer is illustrated expansion as lead-in wire.

Fig. 4 is existing conventional stereo R type three-phase transformer entirety magnetic structure sketch.

Fig. 5 is existing conventional stereo R type three-phase transformer magnetic circuit split figure.

The R type transformer magnetic circuit of plane, i.e. R type single-phase transformer magnet, be equivalent to a circle Tee section, profile are the symmetrical structure magnet of square frame, and the winding less from width is wide to circular diameter Winding, then it is returned to the winding that width is less, cross section is circular, geometric figure simple, intuitive, volume Around algorithm the simplest.

But, it is found that the magnetic circuit build of three-dimensional R type three-phase transformer and structure from Fig. 5 Remarkable, it has three block-shaped sizes identical, with half of complicated three-dimensional shape The iron core of circular section surrounds and forms.Its single iron core is a solid asymmetric geometry figure, Stem stem is the iron core of two semi-circular sections, semi circular surface the most in the same plane, between semi-circle plane Angle is 120 °.Upper and lower two iron yokes should also be an oblique semicircle, and its sectional area and half iron core Sectional area is equal.Such iron core seemingly should be made by the winding method of Fig. 6, is more difficult design and system Make.

Fig. 6 is existing conventional stereo R iron-core coiling directional diagram.Coiling is by being perpendicular to iron yoke level The core section vertical direction design of line, starts with a point of inner terminal, by the half of 30 ° of overturning angles Justify to outermost end around z, and lower end forms semi-circular cross-section in upper end formation plane.

Since it is to say, existing ready-made three-dimensional R type three-phase transformer achieves industrialization, just It is referred to this planform, uses other the most easy structure the most right to realize same solid Claim the target of reactor magnetic circuit, the common trait bag of this holohedral symmetry new construction solid reactor magnetic circuit Include:

1, three iron cores of reactor three-dimensional distribution triangular in shape, alternate iron yoke is equidistant；

2, the one during magnetic circuit is lamination, winding-structure or mixed structure；

3, the magnetic knot with iron yoke unshakable in one's determination closes plane and takes special magnetic structure and attachment structure.

R type three-phase transformer magnet figure according to Fig. 5, Fig. 6, if by zero clearance of the present invention magnetic circuit Unshakable in one's determination and that iron yoke is separately manufactured method, uses lamination to manufacture iron core and iron yoke respectively, and that is just Simple easy in the extreme.I.e. press Fig. 4 and Fig. 5 magnetic structure, magnetic circuit is decomposed into unshakable in one's determination and The big parts of iron yoke two, are total up to 9 pieces, and i.e. 3 iron cores, the thinkings of 6 iron yoke blocks go to make cut-parts, Closed assembly respectively, last assembly becomes the magnetic circuit of a three-dimensional holohedral symmetry laminated type three-phase reactor.

Fig. 7 is the view unshakable in one's determination of three-dimensional laminated type reactor.In figure, according to existing traditional round cross section Cut-parts mode unshakable in one's determination, cuts out that length is identical, width one group of cut-parts not etc., cuts according to circle The outer shape in face folds, and generally uses horizontal closed assembly mode closed assembly.For the cut-parts that amount of deflection is higher, Even can use vertical closed assembly.During vertical closed assembly, cut-parts action of gravity on mounting platform, school Just moving the most very convenient, it is clear that this technique is than existing transformer core iron yoke entirety together Closed assembly is much easier.Three iron cores can be mutually incoherent with split independence closed assembly；And conventional three-phase is electric Three iron cores of anti-device must be together with iron yoke cooperatively closed assembly.

Fig. 8 is the square-section iron yoke view of three-dimensional laminated type reactor.Upper and lower two iron yokes are also divided into 3 Section, 6 sections of monolithic iron yokes manufacture closed assembly respectively altogether, and the geomery of each iron yoke is just the same.

Fig. 9 is three-dimensional laminated type reactor arc section iron yoke view.In Fig. 9, top half is ferrum Yoke top view, it can be seen that the monolithic in legend is by 11 kinds of lamination structures that width is identical, length is different Become and can couple and cover two just for one piece of iron yoke unit of semicircle iron core.Iron yoke must be complete Portion covers arc surface unshakable in one's determination, with prevent leakage field unshakable in one's determination to space divergence, but at half diameter of a circle, More than the lamination of half circular diameter, conflict producing with another half of iron yoke, so folding also After solid, it is necessary to machining removes redundance, become semicircle.The bottom of Fig. 9 is iron yoke Side view, this point of how many levels, the width of each classification is how many, should depending on specific product, Classification is the most, and the semicircle built up is the most accurate, it is also possible to need not reprocessing cutting.Shown in Fig. 9 Iron yoke is rectangular cross section structure, covers half iron core, and iron yoke cross section also corresponds to half core section Long-pending.

Owing to, in the iron yoke of rectangular cross section structure, the width of every yoke lamination is equal, and it Chord length in present unshakable in one's determination semicircle be, the most in the example shown by semicircle at them The chord length minute mark of part is shown as b1-b11 11 grades altogether, and b11 is the shortest and b4 is the longest.Assume by around The magnetic current of group electric current generation in core limb is uniform, then be transmitted to iron yoke b4 layer by iron core In magnetic current necessarily more than the magnetic current that is transmitted in b11, but Figure 10 square equal cross-section iron yoke structure In the width including b4 to b11 all iron yokes lamination be identical, magnetic resistance is identical, different magnetic Flow this and will produce magnetic potential difference, under the promotion of this magnetic potential difference, part between iron yoke different layers lamination Magnetic current can reach relative equilibrium in the transfer of lamination interlayer, and certain interlayer magnetic current can produce extra magnetic Damage.For that purpose it is necessary to use the arc section structure of Figure 10, use different length and the iron yoke of width Cut-parts, make the width of every iron yoke cut-parts equal to the core-lamination stack being in contact with it arc length in semicircle, Thus can reach the balance of nature of magnetic potential, magnetic current, eliminate laminar flow, reduce magnetic loss, improve reactance Device efficiency.Top in Fig. 9 is iron yoke lamination top view, and bottom is the side view of iron yoke.

The three-dimensional laminated type three-phase reactor of the present invention can use upper and lower iron yoke to be all arc section Structure, it is contemplated that general assembly and installation from now on can be had a negative impact by the arc of lower yoke injustice, Arc section structure can also be used in upper yoke, and lower yoke still uses the square-section that stability is higher Structure.In view of Fig. 9 rectangular iron yoke laminar flow effect, can suitably amplify sectional area.Whether go up Iron yoke or lower yoke, cambered surface can be placed upward, it is also possible to places down.

During the iron yoke lamination sawing sheet of square-section, obtain several various sizes of iron yoke by cutting device and cut out Sheet, iron yoke cut-parts are same width but the one of different length group of stalloy, can after closed assembly colligation molding Become the iron yoke of square-section；If desired for the iron yoke of arc section, cut-parts are different in width and difference One group of stalloy of length；Due to the independent closed assembly of iron yoke, closed assembly more common than traditional iron core and iron yoke Simple and convenient much.

Tradition is stacked as horizontal closed assembly, and cut-parts are horizontal positioned, layer upon layer of, under press against above Face, even if finding closed assembly deviation, it is also difficult to adjust, and severe deviation does not has other in addition to doing over again Means are corrected.

The closed assembly of the present invention the most easily uses vertical closed assembly, particularly iron yoke, the action of gravity of cut-parts On platform, will not press against each other, as long as assembly platform is sequentially inserted in the cut-parts of different length On iron yoke assembled frame in, the yardstick of frame is more than cut-parts width, is very easy to so inserting, and treats complete After portion's cut-parts are inserted, it is possible to arranged adjustment.Then the vertical push plate level of assembled frame is advanced, Progressively pushing to cut-parts, as found, cut-parts have irregular situation about stacking, and can unclamp adjustment at any time, Until reaching the shape that design is wanted, so the iron yoke closed assembly of the present invention can reach to fold than tradition Fill more accurate and fine and close degree.

Finally, iron yoke cut-parts closely overlap that to become a two be the solid that circular arc adds that straight line is tangent Geometrical body, and colligation bonding sealing.The method of colligation is similar to tradition, is not described herein, bonding Having multiple method, one of them example is to use hot-setting adhesive or claim thermosetting paint, terminates molding at closed assembly After, make glue be melted into sticky shape by heating, after cooling, iron yoke is solidified.

Three iron yoke unit (as shown in Fig. 5～Fig. 9) are spliced into a triangle iron yoke (as Shown in Fig. 4), a transformator needs two iron yoke upper yokes and lower yoke, two iron yokes Size, profile can be the same or different.

Figure 10 show core-lamination stack and iron yoke lamination direction relations figure.

For making the magnetic current equilibrium in core-lamination stack flow in adjacent two blocks of iron yoke laminations, the lamination of the two The principle of direction relations is: make every core-lamination stack can be connected with arbitrary iron yoke lamination, it is simple to The magnetic current produced in each lamination unshakable in one's determination is made easily directly to transfer to another phase mutually from one.As Direction relations shown in Figure 11 is: core-lamination stack aspect keeps with arbitrary alternate iron yoke lamination aspect 60 ° of angles of cut.

For reducing magnetic resistance, increasing magnetic current circulation, it is respectively formed between zero between two iron yoke unit faying faces Gap magnetic structure, makes to keep low magnetic resistance to connect between three pieces of iron yoke unit, and the magnetic current of arbitrary iron core both may be used A phase unshakable in one's determination is entered, it is possible to cross the iron yoke on third phase and enter neighbouring phase by direct-connected iron yoke Unshakable in one's determination.

Can from the laminated type solid holohedral symmetry three-phase reactor structural framing described above Going out, after using the structure of zero clearance magnetic circuit, laminated type technique can realize three-dimensional equally, is not Have to take convoluted can not.It is thus possible in the ripe technique of traditional large-scale lamination, work On the basis of industry, start out the new knot of the holohedral symmetry magnetic circuit of reactor large-scale, super-huge, three-phase equilibrium The product on design road.

Inquire into below in three-dimensional holohedral symmetry three-phase reactor, use the simpler of Winding iron core and iron yoke Single structure, certainly, the premise of this discussion remains zero clearance magnetic structure.

First existing wound core is introduced.

According to producer's data, coiled iron core has the following advantages for middle-size and small-size reactor:

1) in the case of condition is identical, coiled iron core is compared with tradition closed assembly iron core, and zero load is damaged Consumption declines 7%～10%；No-load current can decline 50%～75%；

2) Wound core can use the thinnest high magnetic conduction cold-reduced silicon sheet, can produce more low-loss Transformator；

3) Wound core good manufacturability, does not shear waste material, and utilization rate is almost 100%；Also can adopt With do mechanization operation, eliminating closed assembly operation, production efficiency improves 5～10 times than closed assembly iron core；

4) coiled iron core self is an entirety, is not required to supporter and is fixedly clamped, again neither one Seam, therefore with under closed assembly iron core similarity condition, reactor noise can reduce by 5～10dB.

The present invention is it would be possible to use rewinding material structure in more capacity reactor.

Certainly, the rewinding material of the coiled iron core used and the present invention had both had points of resemblance and had also had Difference, something in common is that stock is the same, all uses orientation strip to take winding process； And be a difference in that the Wound core being in tradition often makes closed magnetic path, iron yoke unshakable in one's determination together around, So winding is difficult to put into iron core, and the rewinding material in the present invention, iron yoke coiling manufacture respectively unshakable in one's determination, The magnetic circuit do not closed, only plays the single effect of iron core of present invention definition, it is necessary to be equipped with iron yoke, Just can complete magnetic link.

Additionally, three-phase reactor of the present invention, power can be much larger than original use takeup type The middle-size and small-size reactor of iron core.

It can however not ignore, there is a defect the biggest in the rewinding material of the present invention, that is, Eddy current problems in iron core.So it may first have to solve the eddy current problems of rewinding material, ability Rewinding material is made to reach practical requirement.

Figure 11 is the analyzing chart for reason that rewinding material produces vortex flow.It can be seen that have gold The rewinding material of attribute also corresponds to winding and is wrapped on iron core, and magnetic field is just at its internal ferrum enclosed Heart part, iron core at this moment not only allows for magnetic current and flows up and down, and itself is also a kind of " winding " Conductor, the magnetic current that " winding " is coupled is exactly the magnetic current closed in this circle " winding " circle, get over to Outer layer, the magnetic current of closing is the most, and the voltage of sensing is the highest.For that circle rewinding material outermost, The one turn voltage of 1MVA three-phase reactor wound core is likely to be breached even more than 10V, due to series connection Connecting, if using thickness is the stalloy of 0.20mm, the voltage of outer layer 2mm interlayer unshakable in one's determination just may be used Can up to go up hectovolt, and the induced voltage of whole continuous print rewinding material layer from the inside to surface is it is possible to be up to Volts up to ten thousand, the highest voltage, the layer insulation of roll film unshakable in one's determination all must be leaned on to be intercepted, just in case layer Between insulation not form electrical connection, a large amount of vortex flow will be produced, make iron core of electric reactor itself Heat waste is ruined.So eddy current problems is rewinding material structure must solve in advance the great restriction that overcomes because of Element.

The present invention is for overcoming the solution of vortex flow, it is simply that open in the appearance unshakable in one's determination rolled into Axial groove, axial groove reaches insulation mandrel always, is equivalent to cut off the wire turn all connected, Induced voltage just has no way of connecting to accumulate increasing, thus eliminates the voltage source producing vortex flow.

For more powerful large-scale iron core, it is also possible to by different radial positions, output a plurality of axially Groove, axial groove is that divergent shape is uniformly distributed, and makes every section of induced voltage be less than 10V, even lower. So, the probability producing vortex flow will be the least.Axial groove is equidirectional with magnetic current, does not hinders Hinder the flowing of magnetic current.The area of core section lost due to fluting is limited, can ignore or suitably increase Big core-diameter, to compensate because of the loss of the caused net sectional area of fluting.

Figure 12 is the rewinding material schematic diagram manufactured.Its profile is divergent shape, is similar to selenium rectifier Flos Chrysanthemi sheet used in device, the size of certain rewinding material is more much bigger than Flos Chrysanthemi sheet, and shape is cylinder The bodily form, this is difference.Generally speaking, it is possible to find it is characterized in that of rewinding material of the present invention, at volume ferrum There is in the heart one or several axial groove, to eliminate the vortex flow of rewinding material.

In order to strengthen the heat radiation of large-scale reactor, it is possible to insulation tank is retained the steam as ventilation and heat Stream or deep fat circulation road.It is characterized in that there is one or several in the minds of transformer fe by axial dielectric groove structure The heat dissipation channel become.

The most then the iron yoke of convoluted reactor is illustrated.

Figure 13 is the reactor top view of annular winding iron yoke.This iron yoke is the simple of annulus profile Geometry shape, is similar to the iron core of single-phase annular reactor.The inner circle of iron yoke is circumscribed with iron core circle, The cylindrical of iron yoke and iron core circle inscribe, cross section is rectangle.In figure, big circular portion is visible, is The iron yoke (3) of annular；Little circular portion is the most invisible, is the cylindrical iron core (1) of dotted line sign； Middle circular portion, then be partially visible, the sightless winding of part (2).

Each volume iron yoke once winds knot and can make, and the simple efficiency of technique is high, it is not necessary to as laminated type Need like that by three cell cube splits.

In the rewinding material of the present invention, the magnetic line of force is by axially flowing, i.e. vertical direction in figure. And in the iron yoke of the present invention, the magnetic line of force is circumferentially direction flowing, i.e. horizontal direction in figure, So occurring the serious eddy current problems in iron core to be not present in iron yoke.As by cylindrical shape Design iron core, by toroidal design volume iron yoke, convolute manufacture respectively, becomes compared to three-dimensional R type For the overall magnet coiling of depressor, it is the most maneuverable technique.

Iron yoke in Figure 13 uses pure circle, makes that each alternate iron yoke length is big, magnetic circuit is long, magnetic loss Increasing, material usage is saved the most not to the utmost simultaneously.To this end, the way of triangular inner hole can be attempted using instead Start winding, to reduce magnetic material consumption and to reduce magnetic circuit loss.

Figure 14 is the transformator top view of cylindrical annular inboard triangle winding iron yoke.First, be The drift angle of Triangle ID changes circular arc into, the most just meets the requirement of winding Internal core mould.Due to corner The thickness of place's iron yoke must reach core-diameter, and iron yoke just can be made all to cover magnet unshakable in one's determination, and If iron yoke periphery also becomes straight line, then its corner thickness is certainly less than core-diameter, That is impossible.By the rule of coiling square coil, the thickness of corner coil is necessarily smaller than directly The thickness of coil at line, starts coiling from inner circle unshakable in one's determination, always at cylindrical unshakable in one's determination. By winding rule, at acute angle always than obtuse angle place around tightr, so while start around time Wait major part and also have the straightway close to triangle, but around outside, reform into camber line, followed by Continuous around going down, will become round.This rule is modal in the rectangle winding of reactor The wire frame of phenomenon, inner lane or rectangle, around outermost, reforms into round wire bag.Namely Say, be that straight line portion should be more than at low-angle to external pelivimetry to the thickness of external pelivimetry from interior wire frame Thickness.Thus can produce the phenomenon that the expansion between the yoke piece of non-position unshakable in one's determination is loose, cause iron yoke Produce critical noisy.To this end, heat radiation conduit (30) can be set up in this straightway inside casing part iron yoke, To solve to expand loose problem.The number of heat radiation conduit, can determine, at least according to design calculating Three, six at most, nine, or more, anyway as long as the multiple of three, can, purpose Being symmetrical, heat radiation is uniformly.Figure is the design belonging to nine heat radiation conduits (only draws in figure Three, six at another two do not mark).Increase after heat radiation conduit, both can economization magnetic material consumption, again Loss and the heat of iron yoke part can be reduced, be killing three birds with one stone.

Cylindrical is winding iron yoke annular, that inner side is triangle, may be used in upper yoke and lower yoke, or Person is used for one of upper yoke or lower yoke.It is characterized by, use in the iron yoke of circular arc Triangle ID, permissible Set up heat radiation conduit (30).

The difform convoluted iron yoke of above two is all square-section, and the advantage of square-section is Coiling is easier, and magnetic material utilization rate is high, is highly suitable for as lower yoke, because lower yoke bears The gravity of whole transformator, bottom is that the square-section iron yoke weight capacity of plane is strong, good stability.

But owing to, in the iron yoke of rectangular cross section structure, in every synusia, the width of conductive magnetic yoke sheet is phase Deng, and the chord length in circle position unshakable in one's determination at them is, the arc that centre position is longer The magnetic flow that section flows into from iron core is big, and both sides magnetic flow is much smaller.Assume to be existed by winding current In core limb, produced magnetic current is uniform, then be transmitted to the magnetic current one in iron yoke stage casing by iron core Fixed more than the magnetic flow being transmitted in iron yoke both sides, but owning in square equal cross-section iron yoke structure The width of iron yoke magnetic sheet is identical, and magnetic resistance is essentially identical, and different magnetic currents will be different in iron yoke Interlayer produces magnetic potential difference, and under this magnetic potential difference effect, part magnetic current can reach in the transfer of sheet interlayer Relative equilibrium, interlayer magnetic current transfer can produce extra magnetic loss.For that purpose it is necessary to employing arc section The iron yoke of structure, the mid portion of iron yoke ring swells and both sides are recessed, shape such as crater.Arc cuts Face iron yoke is the most extensively applied in traditional large-scale reactor of lamination plane, is easier to understand. Use arc section iron yoke, so that it may reach iron yoke water conservancy diversion interlayer magnetic potential, the balance of nature of magnetic current, fall Low or eliminate laminar flow, reduce magnetic loss, improve reactor efficiency.

Arc section iron yoke is also suitable for upper and lower iron yoke, particularly upper yoke.But arc is supine The stability of lower yoke is the best, and the more conducively heat loss through convection of hot-fluid between winding.

In sum, winding iron yoke is divided into pure circle and two kinds of profile knots of cylindrical annular inboard triangle Structure；And rectangle and two kinds of cross section structures of arc；Can be used for upper yoke and/or lower yoke, add cambered surface court To difference, altogether there are about up to 32 kinds structural groupings, it is seen that the multiformity of product variety of the present invention.

Material for rewinding material has high permeability ultra-thin cold rolled silicon steel band, permalloy soft magnetic strip The soft magnetic materials such as material and amorphous core band.

The thickness of silicon strip is 0.18～0.30；The thickness of permalloy tape is 0.03～0.10mm；Non- Brilliant tape thickness unshakable in one's determination is 0.03mm.

Amorphous core can be by Fe-based amorphous alloy, ferrum ni-based amorphous alloy, cobalt base amorphous alloy or receive The materials such as rice non-crystaline amorphous metal are constituted, and wherein Fe-based amorphous alloy price is low, yield is high, is relatively suitable for Industrial Frequency Transformer uses.

Fe-based amorphous alloy is to be made up of 80%Fe and 20%Si, B metalloid element, and it has height Saturation induction density (1.54T), the everyway such as pcrmeability, exciting current and iron loss is better than silicon The feature of steel disc, particularly iron loss low (for the 1/3-1/5 of grain-oriented Si steel sheet), replace silicon steel to do and join Piezoelectric transformer can save energy 60-70%.The thickness of strip of Fe-based amorphous alloy is about 0.03mm, extensively General it is applied to distribution transformer, high power switching power supply, pulse transformer, magnetic amplifier, intermediate frequency Transformator and inverter iron core, be suitable for 10kHz frequencies below and use.

Owing to super chilling solidifies, during alloy graining, atom has little time ordered arrangement crystallization, and obtain consolidates State alloy is longrange disorder structure, does not has the crystal grain of crystal alloy, crystal boundary, referred to as amorphous Alloy, a revolution of metallurgical material of being known as.This non-crystaline amorphous metal has many uniquenesses Performance, such as excellent magnetic property, corrosion resistance, wearability, high intensity, hardness and toughness, height Resistivity and mechanical-electric coupling performance etc..Due to it excellent performance, technique simple, from the eighties Start to become the research and development emphasis of domestic and international material supply section educational circles.

Amorphous core generally also by metallurgical material factory strip coil around forming, with the manufacture of convoluted iron core Method is identical.A large amount of productions from now on are likely by the dimensions of transformer factory's requirement, by metallurgical material Material factory directly takes powder compression or powder metallurgy mode to manufacture.

Magnetic material used by the present invention be ferrum Si system alloy, ferrum aluminum series alloy, ferrum silicon aluminum series alloy, Nickel iron-based alloy, ferrum Co-based alloy, carbonyl iron, soft magnetic ferrite, amorphous soft magnetic alloy, super Microcrystalline soft magnetic alloy, Fe-based amorphous alloy, amorphous nano-crystalline alloy soft magnetic composite.

Carried vortex flow be the zero clearance magnetic circuit solid reactor of the present invention required solve the One technical problem, and rigidity of structure intensity second concrete technology that to be the present invention need solves is asked Topic.Such as, the easy horizontal sliding of core limb in the present invention, rigidity is also not as good as R type transformator.

One of method strengthening reactance depressor rigidity of the present invention is to use the iron yoke with spill circular groove.

Figure 15 is the top view with spill circular groove winding iron yoke.

So-called spill circular groove, it is simply that in the iron yoke part contacted with iron core, digging out one section of bottom is The cylindrical groove of plane, the diameter of groove is more than core-diameter, in order to allows in embedded groove unshakable in one's determination, prevents ferrum The heart moves horizontally, and fills appropriate adhesive solidification glue in groove, also plays reinforcing magnet structure intensity The effect of rigidity.

It can be seen that the diameter of the circular groove in iron yoke should be greater than the cross section circle chi of iron core Very little, iron core just can be made to put in groove.Bonding can just be accommodated solid in such a trickle circular rings Change glue and magnetic-particle.Simultaneously it is found that the design width with the iron yoke of spill circular groove is inevitable big In interferric width, just can cover iron core, form circular groove type little Chi, the adhesive solidification in ability holding tank Glue and magnetic-particle, be difficult to overflow.As such, it is possible to reduce magnetic resistance and leakage field more.Upper and lower two Iron yoke, width is more than iron core, just like medicated cap and shoes, covers three three-dimensional iron cores, and profile also compares Attractive in appearance.But, such design need to increase certain iron yoke width, thus increases cost, so, Whether use spill circular groove iron yoke, and the projected depth of spill circular groove iron yoke, width, should be according to tool The cost performance of body product is weighed the advantages and disadvantages, and makes appropriate judgement.The feature of iron yoke of the present invention is, in iron yoke Hold concurrently magnetic conduction construction with the reinforcing of spill circular groove.

The method strengthening reactor rigidity of the present invention two is to use to use between upper yoke clamping plate and lower yoke clamping plate The component of long bolt tension, clamping plate and screw rod must and magnetic circuit between take electric insulation and magnetic every From, prevent the eddy current that leakage field and stray magnetic field effect produce.

The present invention needs the 3rd concrete technical problems solved, it is simply that orientation magnetic material uses Middle brought new problem.

It is known that the permeability of oriented electrical steel or volume part is high, magnetic loss is less than non-oriented Stalloy.In conventional three-phase reactor, in order to increase the permeability of magnetic circuit, reduce magnetic resistance and magnetic Damage, to improve the efficiency of reactance depressor, commonly used oriented electrical steel.Such as, lamination plane The iron core of type and iron yoke use the lamination of 45 ° of mitereds, and the overall magnetic circuit that R type solid becomes presses roll film Bending makes magnetic current and then turn to, and has the most solved magnetic current Steering in orientation magnetic material.

But in iron yoke unshakable in one's determination in the present invention, in iron core, high magnetic conduction direction and the magnetic line of force flow to be Axially, i.e. vertical direction；And the magnetic current in iron yoke is horizontal direction.As both pressed between above-mentioned zero If gap magnetic structure directly uses orientation magnetic material, at above-mentioned laminated type iron core iron yoke or winding sections Heart iron yoke junction, it will run into extra magnetic loss problem when magnetic current turns to.

Owing to magnetic current is vertically oriented flowing in iron core, and horizontal direction can be become in iron yoke Flowing, say, that magnetic current, when transferring to iron yoke flowing from iron core, flows to change, Intergranular flow loss can be produced when oriented electrical steel magnetic current turns to.

For solving this problem, the present invention selects an employing non-oriented in both between iron core and iron yoke Property magnetic material, say, that or unshakable in one's determination use orientation magnetic material and iron yoke uses non-oriented magnetic material, or Person's iron core uses non-oriented magnetic material and iron yoke to use orientation magnetic material, can only give up what fish and Pedis Ursus got both Target, makes iron core and iron yoke, selects an employing non-oriented magnetic material, will no longer be present magnetic current and turn in both To time turn to magnetic loss problem.It is characterized in that, unshakable in one's determination one of them is orientation magnetic with iron yoke Material, another is non-oriented magnetic material.

Its implementation is, for reducing the magnetic loss of whole reactor, can use longer orientation ferrum The heart, winding thickness diminishes, and iron yoke shortens the scheme reducing iron yoke loss；Otherwise or, iron core is adopted By non-oriented, iron yoke uses orientation magnetic material, the most no longer there is magnetic loss big asking when magnetic current turns to Topic, for reducing the magnetic loss of whole reactor, can use shorter major diameter winding unshakable in one's determination, increase Add the scheme of iron yoke size.The target of these schemes is to try to reduce the usage amount of non-oriented magnetic material, To reduce magnetic loss.

Another solves the structure of magnetic current turning losses between iron core and iron yoke than more thoroughly, is at iron core And increase by one layer of magnetic current transition zone between iron yoke, it is also possible to reduce the excess loss produced when magnetic current turns to. Magnetic current transition zone is non-oriented magnetic material, and its diameter can be identical with iron core or slightly larger, first makes The magnetic current diffusion that iron core is flowed into by it turns to, and then it extends with the contact surface ovalisation of iron yoke, Make magnetic current be easier to multi-angle and penetrate into iron yoke, reduce loss when magnetic current turns to, at this moment, this Bright iron core and iron yoke just can use orientation magnetic material.

Magnetic current transition zone not BITAI thickness just can reach the purpose that magnetic current turns to, so in transition zone Additional magnetic loss is little.After using magnetic current transition zone, if transition zone is rigidity magnetic material, then transition Layer respectively with iron yoke iron core junction all must polish, as transition zone is flexible magnetic material, then because of transition The existence of layer, the most all need not make processed to iron yoke faying face unshakable in one's determination, because coarse combination Face had both added the contact area of magnetic current and had reduced magnetic resistance, beneficially magnetic current diffusion transfer, overcame magnetic Resistance, is additionally favorable for increasing the integrally-built stiffness and strength of reactor by adhesive solidification agent, is one Lift two to obtain.And do not make processed and also can save the manufacturing cost of magnet.

Magnetic current transition zone is more suitable for combining with spill circular groove, is suitably opened by spill circular groove and deeply opens greatly, even It is split into ellipse, magnetic current transition zone is padded in groove, be aided with the adhering and solidifying containing the thin magnetic powder of nanometer or non-nano Agent pours in groove, and magnetic current transition zone extends along yoke piece direction, and magnetic current turning efficiency is more preferable, thus can solve The problem that magnetic current turning losses encountered in the present invention increases.It is characterized in that, unshakable in one's determination and both iron yokes It it is all the magnetic current transition zone having rigidity or flexibility in orientation magnetic material, and spill circular groove.

Figure 16 is the magnet partial longitudinal section with spill circular groove iron yoke.

In figure, the depth and width of spill circular groove (31) substantially increase, and first pour into a small amount of in groove Adhesive solidification glue (33) containing magnetic powder, then put one layer of magnetic current transition zone (32), the chi of transition zone Very little less than groove diameter more than core-diameter, again pour into the adhesive solidification glue containing magnetic powder, until Overflow, be allowed to overflow to winding direction along iron yoke.

Figure 16 shows, spill circular groove iron yoke has two big functions: first, it is as a structural tenon Hole, is tightly inserted into iron core in hole, prevents horizontal direction unshakable in one's determination from moving, accommodates adhesive solidification glue It is deposited in groove, reaches the strong bonded with iron yoke unshakable in one's determination, make up zero clearance magnetic circuit intensity and toughness Deficiency, this is its structural function.

Secondly, second function of spill circular groove is magnetic conduction function, shows: on the one hand, even if Accomplish that, at zero clearance magnetic circuit macroscopically, gap will exist and directly influence faying face magnetic resistance Size.Even with face grind as minute surface smooth, if observed with microscope, it would still be possible to meeting Seeing some out-of-flatness gaps that surface stays, pit can block magnetic current, increases magnetic resistance and iron loss.

In order to preferably reduce the magnetic resistance of faying face, magnetic conductivity can be added in bonding firming agent micro- Grain, these magnetic conduction microgranules are probably inorganic magnetic conductor, it is also possible to organic magnetic conductor, particularly receive Rice magnetic conductor, performance is more preferable, and nanometer magnetic conductor is small due to granule, can only coagulate at bonding firming agent Gu flowing into pit before, increase magnetic conductance, the magnetic resistance making faying face is less, it is impossible to embedding increase in the planes Add gap width.

Second aspect, can accommodate magnetic current transition zone, magnetic current transition zone in spill circular groove deeper relatively greatly For non-oriented magnetic conductor, it is in the magnetic Medium Position of iron core, iron yoke, through magnetic current transition zone Transition, the level that magnetic current is smoothly transitted in iron yoke by flowing vertically in iron core flows to, decreases again Turn to magnetic loss.It is characterized in that, unshakable in one's determination and iron yoke both of which is orientation magnetic material, and spill circle Magnetic current transition zone is had in groove.

This structure is improved, and makes the stalloy used in iron core iron yoke of the present invention, silicon strip all may be used Use the orientation soft magnetic materials that magnetic loss is less.

The original purpose that zero clearance magnetic structure proposes, for reducing reactor magnetic circuit air gap Magnetic resistance, reduces magnetic loss, improves the efficiency of reactor, reaches energy-conservation target.And this structure proposes Technical progress after time more than a year shows, the innovation that zero clearance magnetic structure is bigger, is by iron core The structure brought with iron yoke lock out operation, the potential of innovation of process.Such as, have employed zero Gap magnetic structure, is just easily manufactured three-dimensional holosymmetric three-phase reactor, as this specification Convoluted iron core that previous section is introduced and iron yoke, the most easily manufacture, no longer there is any work A skill difficult problem or operating difficulties.Meanwhile, compared to R type transformator, the utilization rate of magnetic material is also carried High.

When cutting or punching orientation material, it should be noted that the orientation characteristic of material should be with transformator portion Magnetic current direction in part is consistent.In iron core, magnetic current is perpendicular flow, and in iron yoke, magnetic Stream is bottom horizontal flow sheet.

Especially it should be noted that existing finished silicon steel band is mainly for the manufacture of ring-shaped transformer, c-type transformator With the needs of R type transformator etc., so magnetic current orientation with exhibition band direction consistent, can along open up band side To using all pointss winding, as shown in figure 18, but in the iron core of the present invention, such commodity coiled material Must use and horizontal cut band.

Figure 17 is silicon strip magnetic current orientation and cutting wires relation schematic diagram in existing goods coiled strip.

Iron core in the present invention, for ensureing that magnetic current flows by axial in iron core, as used existing business Product orientation silicon steel winding, should use and horizontal cut into segment, then splicing growth section winding, in splicing Time, before and after's section material strip can be made to make electrical isolation and to connect, the most not allow before and after's metal tape contact, quite In increasing insulation between material strip, then be conducive to eliminating vortex flow, in this case, if also need to Fluting insulation, then can be determined on a case-by-case basis.

Or using along the silicon strip perpendicular with exhibition band direction, this most equally takes all pointss system Feeding band, it is not necessary to splicing, but the iron core so made must open insulation tank.

Figure 18 is to use the relation between the sawing sheet direction of sheet material and magnetic current orientation.It can be seen that Cutting wires is total and magnetic current direction keeps vertical relation.

After using zero clearance magnetic structure, just it is easily manufactured three-dimensional holosymmetric three-phase reactor, As the present invention is explained before, no matter using laminated type or convoluted, geometric figure is simple Carefully and neatly, the most easily manufacture, no longer there is any process difficulties or operating difficulties.

It is found that owing to zero clearance magnetic structure has liberated reactor in superincumbent analytic explanation For the structure constraint of iron yoke unshakable in one's determination, so iron yoke unshakable in one's determination can use different version, example As convoluted iron yoke joins laminated type iron core, or convoluted iron core joins laminated type iron yoke, becomes this The third-largest class in bright is referred to as the reactor magnetic circuit new construction of mixed type.

If feeling the silicon strip large usage quantity of the three-dimensional convoluted iron yoke of holohedral symmetry, Master Cost is higher, That just can use laminated type iron yoke to replace convoluted iron yoke, becomes convoluted iron core and joins lamination sections The three-dimensional holohedral symmetry three-phase reactor of the hybrid architecture of yoke.Certainly, it is contemplated that convoluted iron core Manufacture difficulty is unshakable in one's determination higher than laminated type, it would however also be possible to employ convoluted iron yoke joins the mixing that laminated type is unshakable in one's determination Type reactor, the advantage of convoluted iron yoke is that a magnetic current unshakable in one's determination can be from two sides of winding ring To being passed to neighbouring iron core, be equivalent to two parallel resistances and can reduce all-in resistance in circuit Value, advantageously reduces magnetic resistance.Even descend the convoluted and upper yoke laminated type of yoke, can be real Existing.Any mixed type product can be easily manufactured out by the special requirement of difference in functionality, The present invention can not enumerate all dissimilar, can only introduce several typical structure typically.

The feature of laminated type reactor is that product is many and wide, and the big voltage of power is high, mature technology. Convoluted feature is that time cost is low, and energy efficiency indexes is high, and volume weight is little.But, Liang Zhe Three-dimensional reactor aspect the most not bery improves maturation, so the two is in reactor three-dimensional process, The advantage of zero clearance magnetic circuit can be used for reference, it is achieved mutual tolerance is through, have complementary advantages, become generation system Row new product.The most so saying, because if there is no the basic technology of zero clearance magnetic circuit, just can not Combination can be manufactured unshakable in one's determination respectively with iron yoke, or iron yoke unshakable in one's determination is all the structure of laminated type, or Being all that winding type structure, structure and kind are single, the change of basic magnetic circuit is little.Only at this In bright, just exist and the structure of two kinds of big classes of difference is mixed apolegamy, the space having complementary advantages.

As its name suggests, so-called three-dimensional mixed type reactor, it is simply that in reactor magnet, existing lamination Type structure, also has winding type structure, and this is again a big type magnetic circuit new construction of reactor of the present invention. Attempt several typical case's case row as follows.

One of hybrid scheme wound core+lamination iron yoke

It is high that wound core has Mechanized Processing production efficiency, and the processing quality of winding is folded higher than artificial The advantage of dress, and lamination iron yoke has the shortest magnetic circuit path, the highest stock utilization, both Combine, by wound core be designed with the lamination iron yoke structure of band magnetic current transition zone in spill circular groove The mixed type reactor being bonded, fills adhesive solidification agent band nano-magnetic powder in using spill circular groove Structure and technique after, make iron yoke strong bonded unshakable in one's determination, both of which can use orientation magnetic material, be A kind of easy to manufacture, three-phase reactor of high-efficient solid mixed type magnetic circuit that structure is excellent.

The three-dimensional mixed type three-phase reactor magnet that Figure 19 forms for " wound core+lamination iron yoke " Outline drawing.In figure, upper yoke is arc section laminated type, without spill circular groove, between iron yoke and iron core Leave the air-gap determined by resin plate thickness.Lower yoke is square-section laminated type, band spill circle Groove (31), is inserted for 3 iron cores.3 iron cores are convoluted, above have 6 axial grooves.

Spill circular groove (31) is opened deep bigger, uses by non-oriented magnetic powder metallurgical The rigidity alms bowl shape magnetic current transition zone that sintering or adhesives are made, lower yoke polish is to coordinate iron yoke Composition zero clearance unshakable in one's determination magnetic structure part.

During installation, the lower yoke that will be equipped with clamping plate clamp insulation plate lies on reactor seat stand, Spill circular groove upward, first smears the bonding containing magnetic powder with magnetic current transition zone outer surface in spill circular groove Firming agent, then magnetic current transition alms bowl is put into spill circular groove.

Then, the adhesive solidification agent containing magnetic powder is poured in magnetic current transition alms bowl, iron core is inserted magnetic current In transition alms bowl, the measurement and positioning accurate successor adhesive solidification agent containing magnetic powder overflows to alms bowl periphery and waits Solidification.

The most each step is: installs winding on iron core and fastens and the installation of lower yoke similar approach Upper yoke, clamping, auxiliary member installation etc..

The two of hybrid plan

After combining zero clearance magnetic circuit technology due to laminated core by traditional handicraft, it is only necessary to cutting is grown up Spending one group of cut-parts equal, that width is different, single closed assembly unshakable in one's determination is the most more convenient, compares wound core Technical maturity.On the contrary, the processing of winding iron yoke is the most eaily, the iron yoke work of winding Skill is only equivalent to the making of ring transformer cores, and the coiling that the most there is not toroidal transformer difficulty is asked Topic.So, both are combined, has complementary advantages, be combined into the mixed of " laminated core+winding iron yoke " Conjunction scheme.

The three-dimensional mixed type three-phase reactor magnet that Figure 20 forms for " laminated core+winding iron yoke " Outline drawing.

In figure, 3 iron cores (1) are for being formed by the solidification of orientation lamination closed assembly.Iron yoke is orientation Winding coiling, upper yoke is arc section, the winding iron yoke of cylindrical annular inboard triangle, lower yoke For square-section, annular winding iron yoke.

Lower yoke can also use arc section, and cambered surface places beneficially structure stability upward, is also beneficial to dissipate Hot fluid enters winding, is taken out of rapidly by winding heat, lower yoke has 3 spill circular grooves (31).

This programme uses the flexible magnetic modulated by the non-oriented magnetic powder of comparatively dense flow through to cross Layer.Having two schemes, one is to use using flexible organic material as carrier, by intensive high magnetic conduction Magnetic powder participates in wherein, makes tangible flexible transition body by spill circular groove and core dimensions, pad in In groove；Another program is the invisible side being impregnated in adhesive solidification agent by intensive high magnetic conduction dispersed-powder Case, forms magnetic conduction transition zone after adhesive solidification agent solidification.In this programme, unshakable in one's determination, iron yoke and recessed Shape circular groove all need not be processed or polish.

Lamination iron yoke on the three of hybrid plan+under wind iron yoke+wound core

This programme is the mutation of one of scheme, it is simply that change the lower yoke in one of hybrid plan into volume Around iron yoke.

Winding iron yoke one winding makes, and particularly has the iron yoke of increment magnetic conduction square-section, makees Having firm basis for lower yoke, reactor stiffness and strength is the most more satisfactory, and fluting also compares appearance Easily.And upper yoke uses the laminated type that magnetic circuit is the shortest, magnetic loss is minimum, magnetic material utilization rate is the highest, also It it is a light-weighted improvement.

Figure 21 is " upper lamination iron yoke+under wind iron yoke+wound core " three-dimensional mixed type three-phase electricity Anti-device magnet outline drawing.

Or, magnet can also " lower lamination iron yoke+above wind iron yoke+wound core " form Three-dimensional mixed type.

According to example provided above it appeared that the present invention has by various different configuration parts groups The three-dimensional mixed type holohedral symmetry three-phase reactor that conjunction scheme is constituted.Different schemes differs from one another, suitable For different occasions, form the three-phase reactor of varied miscellaneous three-dimensional holohedral symmetry magnetic circuit, To quickly enter the product manufacturing field of industrialization.

Claims (10)

1. the three-dimensional tri-phase iron core reactor being mainly made up of winding, iron core and the big parts of yoke three, It is characterized in that, reactor has three-dimensional holosymmetric zero clearance magnetic structure；Iron core and iron yoke are as two Big separate unit split manufactures closed assembly.

Three-dimensional tri-phase iron core reactor the most according to claim 1, is characterized in that, reactor The three-dimensional distribution triangular in shape of three iron cores, alternate iron yoke is equidistant；Magnetic circuit is lamination, winding One in structure or mixed structure.

3. according to the three-dimensional tri-phase iron core reactor described in claim 1 or claim 2, its feature It is that unshakable in one's determination and iron yoke is laminated type structure or winding type structure；Iron core is circular section, and iron yoke is rectangle Cross section or arc section.

4. according to the three-dimensional tri-phase iron core reactor described in claim 1 or claim 2, its feature It is that unshakable in one's determination and iron yoke is winding type structure；One or several axial groove is had in rewinding material.

5., according to the three-dimensional tri-phase iron core reactor described in claim 1 or claim 2, it is special Levying and be, in iron yoke, reinforcing with spill circular groove is held concurrently magnetic conduction construction.

6., according to the three-dimensional tri-phase iron core reactor described in claim 1 or claim 2, it is special Levying and be, unshakable in one's determination one of them is orientation magnetic material with iron yoke, and another is non-oriented magnetic material.

7., according to the three-dimensional tri-phase iron core reactor described in claim 1 or claim 2, it is special Levying and be, unshakable in one's determination and iron yoke both of which is to have rigidity or flexibility in orientation magnetic material, and spill circular groove Magnetic current transition zone.

8. according to the three-dimensional tri-phase iron core reactor described in claim 1 or claim 2, its feature It is that magnet is the three-dimensional mixed type that " wound core+lamination iron yoke " forms.

9. according to the three-dimensional tri-phase iron core reactor described in claim 1 or claim 2, its feature It is that magnet is the three-dimensional mixed type that " laminated core+winding iron yoke " forms.

10. according to the three-dimensional tri-phase iron core reactor described in claim 1 or claim 2, its feature It is that magnet is the three-dimensional mixed type that " upper lamination iron yoke+under wind iron yoke+wound core " forms；Or The three-dimensional mixed type that person forms for " lower lamination iron yoke+above wind iron yoke+wound core ".