CN1037427A - The transformer of the self-regulated reactance of band air gap - Google Patents
The transformer of the self-regulated reactance of band air gap Download PDFInfo
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- CN1037427A CN1037427A CN 88103600 CN88103600A CN1037427A CN 1037427 A CN1037427 A CN 1037427A CN 88103600 CN88103600 CN 88103600 CN 88103600 A CN88103600 A CN 88103600A CN 1037427 A CN1037427 A CN 1037427A
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Abstract
This transformer comprises three post magnetic cores, and all there is air gap the centre of two column jackets; Two groups of windings, one group is AC Windings, one group is the direct current winding, they are all on column jacket separately, elementary winding and secondary winding are on newel, and elementary winding supplies alternating current, the outside electric of secondary winding by power supply, two AC Windings series connection supply alternating current by the additional winding on newel to the AC Windings of this series connection.Two direct current windings in series are supplied with the electric current in the AC Windings direct current winding of this series connection after the bridge circuit rectification.When supplying with external loading with the electric energy of power supply, also regulates by this transformer supply voltage and load voltage.
Description
The present invention relates to a kind of transformer, this transformer is realized voltage-regulation by the reactive power that automatic adjusting absorbed.
More particularly; the present invention relates to a kind of transformer of self-regulated reactance, this transformer is installed on the three adjustable post magnetic cores of inductance, and this variable inductor is the applicant's 4; illustrate in 620, No. 144 United States Patent (USP)s (authorization on October 28th, 1986 bulletin) and be protected.
In fact; the inventor has been found that; above-mentioned 4; 620; just can obtain a device of regulation voltage effectively and automatically around last additional winding on the magnetic core of the illustrated and variable inductor that is protected in No. 144 United States Patent (USP)s; perhaps obtain an energy with the ac current source transformer of capacitive source powering load for example, simultaneously effectively and automatically realize the adjusting of the voltage of supply voltage and its supply load.
According to the present invention, a kind of transformer is provided, this transformer comprises a magnetic core of being made up of first post, second post and the 3rd post, and first end and second end are all arranged on each post.First end of three posts connects together by first common point of magnetic core, and second common point of second end of three posts by magnetic core connects together.This transformer also comprises first winding (so-called elementary winding) and second winding, first winding is supplied with alternating current at least one core post and by power supply, second winding also produces alternating current at least one core post and by the source current induction.First winding and second winding so are arranged on the magnetic core, make that two alternating currents in first and second windings produce an exchange flux in each post of the second and the 3rd post.The control winding is passed to direct current, and so is arranged on the magnetic core, makes above-mentioned direct current all produce direct current flux in each post of the second and the 3rd post.When exchange flux and direct current flux second when identical with direction in the post of the 3rd post, then direction is opposite in another post of the second and the 3rd post.This transformer comprises that also the alternating current with second winding is converted to the device of direct current, and this direct current is used for supplying with the control winding.Therefore, the size of supplying with the direct current of control winding changes along with the changes in amplitude of alternating current in second winding, so that the density of line of magnetic force of the direct current flux in the second and the 3rd post is also changed and control the permeability of the second and the 3rd post for exchange flux thereupon.Secondary winding be subjected to second with the 3rd post in exchange flux induction and link to each other so that power with load to it.
More primely, have first air gap on second post, have interstice on the 3rd post, the magnetic line of force of the total magnetic flux that produces in the first air gap crosscut, second post, the magnetic line of force of the total magnetic flux in interstice crosscut the 3rd post.
According to a most preferred embodiment of the present invention, current transfer device is a diode-bridge circuit, this circuit is used for the alternating current rectification in second winding, and gives the electric current after the control winding provides rectification, and the electric current after this rectification is exactly a direct current of supplying with the control winding.This transformer may further include a fixed inductor in parallel with second winding, and/or D.C mutual-inductor in response to the alternating current of second winding, the two ends of the secondary winding of this AC current transformer link to each other with output with the input of diode-bridge circuit respectively, and its alternating current is supplied with diode-bridge circuit.
According to another most preferred embodiment of the present invention, elementary winding is on first post, and second winding comprises first and second AC coil.First and second AC coil are connected mutually, and respectively on second post and the 3rd post.And the control winding comprises first and second control coils, and they also are mutually series connection and respectively on the second and the 3rd post.Thereby, alternating current in first and second AC coil of the elementary winding and second winding produces first exchange flux by the determined closed magnetic circuit of first and second posts, and one along second exchange flux by the determined closed magnetic circuit of first and second posts.And the direct current in first and second control coils produces one along the direct current flux by the second and the 3rd determined closed magnetic circuit of post.
Secondary winding is preferably on first post, and comprise (a) winding that links to each other with external loading, (b) one with second winding in the winding that is in parallel of first and second AC coil that are connected in series each other, first and second AC coil of serial connection provide alternating current so that give each other, (c) have not only comprised first winding that links to each other with external loading but also have comprised second winding with two coils from parallel connection of coils of second winding.
Can form elementary winding and secondary winding by band tap in the middle of the simplex winding.
Below having read, after the specifying of the most preferred embodiment of the transformer of this self-regulated reactance, just can be well understood to purpose of the present invention, advantage and other feature more, only the present invention be specified below with reference to accompanying drawing.
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Fig. 2 represents the winding lap wound situation on three core post of transformer shown in Figure 1.
Fig. 3 represents second embodiment of transformer of the regulative reactance of band air gap of the present invention.
Fig. 4 represents the equivalent electric circuit of the 3rd embodiment of the transformer of regulative reactance of the present invention.
Fig. 5 represents the equivalent electric circuit with the transformer of the regulative reactance of air gap, is used for illustrating its operation principle.
Fig. 6 represents the characteristic curve according to the transformer of the present invention that circuit obtained shown in Figure 5.
Fig. 7 represents several the representational characteristic curves of transformer of the present invention under different loads.
Should illustrate that at first in different accompanying drawings, identical component is represented with same reference number.
As shown in Figure 1, the transformer of self-regulated reactance of band air gap comprises one three post magnetic core 1, and it comprises a newel 2 and two column jackets 3 and 4. Post 2,3 and 4 upper end connect together by first common point 5 of magnetic core 1, and second common point 6 of the lower end of post 2,3 and 4 by magnetic core 1 connects together.
Should be noted that in the present disclosure and claims afterwards in, " post " this term is meant each magnetic circuit in three magnetic circuits of two common points 5 connecting magnetic core 1 and 6.
Three posts 2,3 are identical with 4 best cross sections.Though two column jackets 3 are identical with 4 cross section to be important, the cross section of newel can equal also can be greater than the cross section of column jacket 3 and 4.
Full wave bridge rectifier 11 comprises several diodes, and constitute by common mode, full-wave rectifier 11 makes the coil 9a and the 9b of series connection be connected in series with the coil 10a and the 10b that connect, alternating current by coil 9a and 9b is by rectification, and resupply winding 10a and 10b through the electric current after such rectification, for simplicity, claim supply winding 10a after this rectification and the electric current of 10b to be " direct current ".
The structure of above-mentioned transformer with reference to the described self-regulated reactance that has an air gap of Fig. 1 is equivalent to the applicant 4,620, the structure chart of variable inductor illustrated and that be protected in No. 144 United States Patent (USP)s (authorization on October 28th, 1986 bulletin).
One end of winding 16 is connected with the free end of coil 9a, and the other end is connected with the ac output end 19 of diode-bridge circuit 11, thereby, the alternating current that produces in the secondary winding 16 is supplied with the coil 9a and the 9b of series connection, and supplies with the control winding 10a and the 10b of series connection after diode-bridge circuit 11 rectifications.
By the turn ratio of suitably selecting winding 12 and 16 voltage of supply line circle 9a and 9b is reduced on request.Thereby do not need outside step-down transformer can reduce voltage.
As shown in Figure 3, when the supply voltage size to fit, coil 9a and 9b can directly supply with alternating current by power supply 13, under concrete condition, one end of power supply 13 links to each other with the free end of coil 9a, and the other end of power supply 13 links to each other with the alternating current output 19 of diode-bridge circuit 11.In addition, the alternating current of being supplied with coil 9a and 9b by power supply 13 passes through diode-bridge circuit 11 rectifications, provides direct current to supply with control coil 10a and 10b.
As shown in figures 1 and 3, coil 10a and 10b are so respectively on column jacket 3 and 4, and so couple together, make to supply with direct current flux FC that their direct current (electric current after the rectification) produced by by two column jackets 3 and 4 determined closed magnetic circuits (path that comprises air gap 7 and air gap 8 certainly), and do not have direct current flux to pass through newel 2.
Equally as shown in figures 1 and 3, winding 12, coil 9a and 9b and presumable winding 16 have identical polarity.Therefore, the alternating current in winding 12, coil 9a and 9b and the presumable secondary winding 16 produces first exchange flux in post 2 and 3 determined closed magnetic circuits, and produces second exchange flux in post 2 and 4 determined closed magnetic circuits.First and second exchange flux each other in the same way in newel 2.
During each positive half cycle of power supply alternating current, correspondingly also be between each positive half period of the alternating current of elementary winding 12, coil 9a and 9b and presumable winding 16, the direct current flux and first exchange flux are reverse mutually in column jacket 3, therefore, direct current flux makes the permeability of 3 pairs of exchange flux of post increase.On the contrary, each other in the same way, therefore, direct current flux makes the permeability of 4 pairs of exchange flux of post reduce in column jacket 4 for direct current flux and exchange flux.
Certainly, as mentioned above, between each positive half period of power supply 13, the mutual superposition of direct current flux and exchange flux.Can be readily seen that between each negative half-cycle of the alternating current of power supply 13, situation is just opposite, because the direction of first and second exchange flux this moment in column jacket 3 and 4 is opposite.
The effect of direct current flux FC is to make that magnetic core 1 is dark saturated or shallow saturated so that control the permeability of magnetic core 1 for the 1st and the 2nd exchange flux.Direct current flux FC enhancing can cause that the reactance of coil 9a, 9b and winding 12 reduces, and causes that the alternating current in these three coils increases, and the size of the reactive power that is absorbed by the transformer of self-regulated reactance just changes along with the change of direct current flux FC.Because direct current (electric current after the rectification) among coil 10a and the 10b and corresponding direct current flux FC change with the size of alternating current among coil 9a and the 9b automatically pro rata, thereby just can control the magnetic permeability of 1 pair of exchange flux of magnetic core automatically, thereby just can control the absorption of the reactive power of transformer of the present invention automatically.
As following will specify, in given source current scope, transformer makes the alternating voltage on series connection winding 9a and the 9b and the alternating voltage of corresponding power supply 13 can be adjusted on the specified value to the automatic control of the reactive power that absorbed, and this specified value can be adjusted by the parameter of the self-regulated reactance transformer of accommodation zone air gap suitably.
Total exchange flux in another secondary winding 14 acceptor center posts 2 on newel 2 is responded to and load 15 outside the supply of generation alternating current, load 15 links to each other with two end points of secondary winding 14, and the voltage swing of supply load 15 is recently determined by the number of turn of elementary winding 12 and 14 certainly.Because the alternating voltage of power supply 13 is conditioned, therefore, the voltage of winding 14 two ends supply loads 15 is also regulated automatically.
As shown in Figure 2, coil 9a and 10a have around the centre on the column jacket 3 of air gap 7, and accordingly, coil 9b and 10b also have on the column jacket 4 of air gap 8 around the centre.Bank winding 9a, 9b, 10a and 10b have an advantage like this on post 3 and 4, promptly can reduce the leakage flux at air gap 7 and 8 places greatly.
Winding 12,14,16 on newel 2 also adopts above-mentioned this superior changing around mode, as shown in Figure 2.
In one embodiment, the winding on the newel 2 12,14 and can with the band tap 220 to 224 simplex winding 21 replace.In Fig. 4 equivalent electric circuit showed, winding 21 is on newel 2, and power supply 13 provides alternating voltage and electric current for winding 21 by its tap 220 and 224. Tap 222 and 224 by winding 21 provides alternating voltage and electric current for winding 9a and 9b.Said above that the electric current among winding 9a and the 9b was by diode-bridge circuit 11 rectifications, so that supply with control winding 10a and 10b.Winding 21 provides alternating current for load 15 by tap 222 and 224.Therefore transformer shown in Figure 4 is just as an autotransformer job.
The application of simplex winding 21 has significantly reduced the needed lead of formation transformer.In addition, in some circuit, the diameter of lead also can reduce.
Narrate some operating characteristic of the regulative reactance transformer of band air gap now by means of characteristic curve shown in Figure 6, these curves are to draw according to the result that circuit shown in Figure 5 is measured.
Under situation shown in Figure 4, circuit shown in Figure 5 comprises one on newel 2 and have the winding 21 of tap 220 to 224, and power supply 13 links to each other with 224 with the tap 221 of winding 21.Winding 9a and 9b directly obtain alternating current from power supply 13.Say that further an end of power supply 13 links to each other with the free end of coil 9a, and the other end links to each other with the ac output end 19 of diode-bridge circuit 11.
At first, should illustrate that transformer of the present invention is a single magnetic core device with three kinds of functions:
-as above-mentioned 4; 620; illustrated and the protected automatic control variable inductor that has air gap in No. 144 United States Patent (USP)s, it can absorb a large amount of reactive powers from power supply, so (see figure 7) as long as supply voltage raises a bit on the basis of default a certain voltage a little.The size of the reactive power that is absorbed is proportional with the increase of voltage basically, and can change and regulate the voltage of power supply 13.
-when being used as transformer, it can supply with desired voltage as 15 for external loading by secondary winding 14 or 21.When the voltage of power supply 13 was regulated by absorbing reactive power, as mentioned above, the voltage of supply load was also regulated.And
-when having secondary winding 16, perhaps when using the autotransformer circuit, can be by the internal load that winding 9a and 9b constitute by a power voltage supply lower than the voltage of power supply 13.From the angle of economy, this supply power mode is very desirable, because the price of the high-voltage diode of the expense of High-Voltage Insulation and bridge rectifier 11 is very high.
Yet; must be pointed out; its course of work of self-regulated reactance transformer that the present invention has an air gap is different from traditional its secondary winding that passes through and gives the transformer of self-excitation variable inductor power supply of band air gap (at above-mentioned United States Patent (USP) 4; 620; in 144 the explanation and be protected); in fact; for example elementary winding 12 of transformer portion and secondary winding 14; and presumable secondary winding 16; with variable reactor partly be winding 9a; 9b; 10a; 10b is installed on the same magnetic core 1; thereby they influence each other by first and second exchange flux in the magnetic core 1, thereby the mathematic(al) representation of transformer operating characteristic also will be revised.
At first, the operating voltage V of transformer
0(marking among Fig. 5) is under situation shown in Figure 1, depend on each winding among winding 9a and the 9b and the turn ratio of secondary winding 16, under situation shown in Figure 13, depend on each winding among winding 9a and the 9b and the turn ratio of elementary winding 12.Under situation shown in Figure 4, depend on the turn ratio of each winding and this part winding of winding 21 between tap 221 and tap 224 of winding 9a and 9b.In addition, the relation between operational voltage value and the above-mentioned turn ratio is non-linear.
Fig. 6 shows some characteristic curves, operating voltage V when these characteristic curves represent that above-mentioned turn ratio is got different value
0Concrete situation of change.Should be noted that the curve representation operating voltage V of Fig. 6
0With source current i
0The variation relation of (see figure 5).
Table 1 has been listed the number of turn N of winding 21 between tap 221 and 224 among Fig. 5
21, the number of turn N of each coil of winding 9a and 9b
9, and the number of turn N of each coil of winding 10a and 10b
10, each group data is all corresponding to a corresponding curve.
Can be readily seen that by table 1 and curve shown in Figure 6, by changing number of turn N
9With number of turn N
21Ratio can adjust the operating voltage V of regulative reactance transformer of band air gap
0, in fact, under the situation of all curves, number of turn N
21Keep constant (60 circle), and number of turn N
9In curve A
1, A
2And A
3Situation under be 60 circles, in curve B
1And B
2Situation under be 50 circles, be 40 circles under the situation of curve C.In addition, can clearly be seen that operating voltage V from Fig. 6
0With turn ratio N
9/ N
21Variation be non-linear.
Two sets of curves among Fig. 6 are (promptly by A
1, A
2And A
3One group and B forming
1, B
2Another group of forming) and table 1 illustrate: as number of turn N
21And N
9When keeping constant, in the voltage-regulation scope, number of turn N
10Variation cause operating voltage V
0And current i
0The slope variation of relation curve, and can be readily seen that slope is to turn ratio N
10/ N
9Variation very responsive.
Although this also can be proved theoretically, however curve shown in Figure 6 clearly illustrate that fully, in the voltage-regulation scope, operating voltage V
0Be ratio N
9/ N
21
Function, V
0And i
0The slope of relation curve be ratio N
10/ N
9Function.Because elementary winding 21 and AC Windings 9a and 9b be on same magnetic core 1, thereby they interact, so ratio N
9/ N
2To operating voltage V
0Influential.
By suitable adjustment ratio N
9/ N
21And N
10/ N
9, can be so that V
0With i
0The slope of relation curve be zero in the voltage-regulation scope, and in this voltage-regulation scope, also can be adjusted in operating voltage on the desired value.
For the newel 2 that prevents magnetic core 1 is saturated, have been found that the sectional area S of post 2
2, number of turn N
21, column jacket 3 and 4 sectional area S
3,4, and number of turn N
9Must satisfy following relationship:
N
21·S
2≥N
9·N
3，4
Therefore, when post 2,3 is identical with 4 cross section, ratio N
9/ N
21Must be less than or equal to 1.
So the course of work of the self-regulated reactance transformer of band air gap is different from the applicant at United States Patent (USP) 4,620, the course of work of the automatic control variable inductor of band air gap illustrated and that be protected in No. 144 (authorization on October 28th, 1986 bulletin).
Yet, holding together the legendary venomous insect fasten hide or leather on of urinating in the situation of Regulatable reactor declares mirror sodium and 8 and makes that the operating characteristic of all transformers constituted according to the present invention is identical, because air gap 7 and 8 has reduced its operating characteristic susceptibility different to these magnetic core of transformers greatly, and reduced greatly its operating characteristic to other undesirable phenomenon (at United States Patent (USP) 4, set forth in 620,144) susceptibility.
Certainly, can carry out the adjusting of required operating characteristic to transformer of the present invention, this is at United States Patent (USP) 4,620, and 144(1986 October 28 authorized bulletin) in describe in detail.
Yet the present invention has further proposed following additional adjusting device, and these adjusting devices are used for the operating characteristic of self-regulated reactance transformer of accommodation zone air gap.
According to first method, fixed inductor 20 and winding 9a that connects and 9b parallel connection (Fig. 1 and Fig. 3), the alternating current of responding to generation owing to power supply 13 flows through inductor 20, and the size of this electric current depends on the inductance value of inductor 20.This alternating current flows among winding 10a and the 10b after rectification.Thereby produced additional direct current flux, this magnetic flux passes through by column jacket 3 and 4 determined closed magnetic circuits, and the direct current flux that electric current produced of alternating current after rectification of this magnetic flux and winding 9a and 9b mutually in the same way.By changing the inductance value of inductor 20, can accurately regulate operating voltage V
0(in the voltage-regulation scope).Inductor 20 linear works or mistake magnetization (is over excited) (allowing saturated).
Another kind method is with a current transformer 17(Fig. 1 and Fig. 3), this current transformer 17 comprises a secondary winding, the one end links to each other with the ac input end 18 of diode-bridge circuit 11, and the other end links to each other with the ac output end 19 of diode-bridge circuit 11.Current transformer 17 is responded to alternating current of generation by the alternating current among its secondary winding response winding 9a and the 9b, this alternating current that secondary winding produced by current transformer 17 is supplied with coil 10a and 10b after diode-bridge circuit 11 rectifications, thereby produce an additional direct current flux, this magnetic flux is by identical with the direction of the direct current flux that electric current produced of alternating current after rectification of winding 9a and 9b with 4 its directions of determined closed magnetic circuit by column jacket 3.When the size of the electric current that is produced when instrument transformer 17 changed with the electric current among winding 9a and the 9b, additional direct current flux also changed thereupon.By the characteristic of suitable selection transformer, can in the voltage-regulation scope, change V
0And i
0The slope of relation curve.
Certainly, in order to adjust the operating characteristic of the self-regulated reactance transformer of being with air gap, when needing, can adopt inductor 20 and instrument transformer 17 simultaneously.
Operating characteristic when Fig. 7 represents transformer of the present invention level (as winding 14) connects different loads secondarily.
More particularly, the V during bringing onto load (zero load) not of the curve G indication transformer among Fig. 7
0And i
0Relation curve.Curve D, E and F indication transformer are the operating characteristic under the situation of the electric energy supply load of power supply, and the pairing load of curve F is greater than the pairing load of curve E, and the pairing load of curve E is greater than the pairing load of curve D.In the voltage-regulation scope, when load variations, even when no-load transformer (curve G), voltage V
0Keep relative stability.
Those of ordinary skill in the art can recognize that the self-regulated reactance transformer of band air gap has constituted a simple ac voltage regulator.This voltage-regulation is that the absorption by automatic control reactive power realizes.
A significant application of the self-regulated reactance transformer of band air gap is (above-mentioned 4,620, under the situation of the variable inductor in No. 144 United States Patent (USP)s) alternating voltage of load to be regulated, its alternating voltage is with power line or more generally supplied with by capacitive source (capacitive coupling).
In this application, the capacitive source has constituted power supply 13, load be ohmic, reactive or be ohmic be again reactive.As shown in Figure 7, transformer of the present invention provides desired electric energy to load, and makes voltage V
0Keep relative stability, thereby make the voltage of supply load keep relative stability.
When being used for making capacitive source (passing through capacitive coupling) powering load, the internal electrical loss of the self-regulated reactance transformer of band air gap can not increase along with the increase of the alternating current of supplying with this load.In fact, when the electric current of transformer supply load of the present invention increased, alternating current among winding 9a and the 9b and the winding 10a that is obtained by the alternating current rectification and the direct current among the 10b all reduced.
Although the most preferred embodiment of self-regulated reactance transformer by the band air gap illustrates the present invention, but should be noted that, can be improved to these embodiment and to the application of this transformer within the scope of the appended claims, and do not changed or conversion purpose of the present invention and flesh and blood.
Claims (25)
1, a kind of transformer comprises:
A magnetic core of forming by first post, second post and the 3rd post, each post all has first end and second end, three first ends by the male show off of magnetic mirror also refute the humorous of the yellow reap bucktooth of austere show off and send ü to declare the male humorous of mirror to refute the yellow reap of austere show off
First winding, promptly so-called elementary winding, this winding and are supplied with alternating current by power supply at least one post of magnetic core,
Second winding, this winding are also at least one post of magnetic core, and the alternating current of being responded to generation by source current supplies with this winding,
Said first and second windings so are arranged in two alternating currents that make on the magnetic core in first and second windings and produce an exchange flux in each posts of second post and the 3rd post,
The control winding, this winding is supplied to direct current, and so is arranged on the magnetic core, makes direct current produce a direct current flux in each post of second post and the 3rd post,
When said exchange flux when direction is identical in a post of second post and the 3rd post with direct current flux, then direction is opposite in another post of second post and the 3rd post,
Conversion equipment, this conversion equipment is converted to direct current with the alternating current in second winding, so that supply with the control winding, the size of supplying with the direct current of control winding changes along with the size variation of the alternating current in second winding, thereby the density of line of magnetic force of the direct current flux in said second post and the 3rd post is also changed thereupon, and control the magnetic permeability of the second and the 3rd post for exchange flux, and:
Secondary winding, this winding are subjected to the induction of the exchange flux in the second and the 3rd post, link to each other with an electric loading so that give this electric.
2, transformer according to claim 1, have air gap on wherein said second post, the magnetic line of force of the total magnetic flux that produces in this air gap crosscut second post, and also have air gap on the 3rd post, the magnetic line of force of the total magnetic flux that produces in this air gap crosscut the 3rd post.
3, transformer according to claim 1, wherein, current transfer device is a diode-bridge circuit, the alternating current that this diode-bridge circuit will be supplied with second winding carries out rectification, and the electric current supply control winding after such rectification, the electric current after this rectification is exactly the direct current of said supply control winding.
4, transformer according to claim 3, further comprise one with said second winding inductor in parallel.
5, transformer according to claim 3, wherein said diode-bridge circuit comprises an input and output that the alternating current by said second winding passes through, and, said transformer further comprises a current transformer, this current transformer is responded to the alternating current in second winding, and comprise a secondary winding with first end and second end, said first end links to each other with output with the input of diode-bridge circuit respectively with second end.
6, transformer according to claim 1, wherein said elementary winding and secondary winding are that the simplex winding of and band tap on said first post by forms.
7, transformer according to claim 1, wherein said elementary winding is on said the 1st post, and its number of turn is Np, said second winding comprises first coil and second coil, first coil and second coil are connected on second post and the 3rd post and mutually respectively, and their numbers of turn separately are Ns, and the sectional area of first post is S
1, and the sectional area of second post and the 3rd post is S
23, parameter N p, Ns, S
1And S
23Satisfy following relationship:
Np·S
1≥Ns·S
23
8, transformer according to claim 2, wherein elementary winding is on first post, and its number of turn is Np, second winding comprises first coil and second coil, first coil and second coil are connected on second post and on the 3rd post and mutually respectively, and their numbers of turn separately are Ns, and the sectional area of first post is S
1, and the sectional area of second post and the 3rd post is S
23, parameter N p, Ns, S
1And S
23Satisfy following relationship:
Np·S
1≥Ns·S
23
9, a kind of transformer comprises:
A magnetic core of forming by first post, second post and the 3rd post, each said post all has first end and second end, three said first ends connect together by first common point of magnetic core, and three said second ends, second common point by magnetic core connects together
First winding, promptly so-called elementary winding, this winding and are supplied with alternating current by power supply on said first post,
Second winding, this winding are at least one said post of magnetic core, and the alternating current of being responded to generation by source current supplies with this winding,
Alternating current in said first and second windings produces first exchange flux in by said first post and the determined closed magnetic circuit of second post, and in by said first post and the determined closed magnetic circuit of the 3rd post, produce second exchange flux, first exchange flux and second exchange flux in said first post mutually in the same way
First control coil and second control coil on said second post and the 3rd post respectively, they are so connected and pass to direct current, make this direct current produce a direct current flux in the said second and the 3rd post,
Conversion equipment, this conversion equipment is converted to direct current with the alternating current in said second winding arrangement, so that supply with said first and second control coils, the size of supplying with the direct current of control winding changes along with the size variation of the alternating current in second winding, thereby the density of line of magnetic force of the direct current flux in the said second and the 3rd post is also changed thereupon, and control the second and the 3rd post respectively with respect to the magnetic permeability of said first and second exchange flux, and
Secondary winding, this winding and are responded in mutual in the same way first and second exchange flux in first and second posts on said first post, and link to each other with a load, so that to this electric.
10, according to the said transformer of claim 9, wherein have first air gap on second post, the magnetic line of force of the total magnetic flux that this air gap crosscut second post produces, and have interstice on the 3rd post, the magnetic line of force of the total magnetic flux that produces in interstice crosscut the 3rd post.
11, according to the said transformer of claim 10, wherein second winding comprises first AC coil and second AC coil, and these two AC coil are connected and mutually respectively on said second post and the 3rd post.
12, according to the said transformer of claim 11, wherein said load is outer load, and transformer further comprises the additional secondary winding on first post, its two ends connect first AC coil and second AC coil of connecting mutually in second winding, and said additional secondary winding responds the total magnetic flux in first post and responds to first and second AC coil that the generation alternating current is supplied with second winding.
13, according to the said transformer of claim 10, wherein said current transfer device comprises a diode-bridge circuit, the alternating current that this circuit will be supplied with second winding carries out rectification, and electric current supply first and second control coils after such rectification, the electric current after this rectification is exactly the direct current of said supply control winding.
14, according to the said transformer of claim 13, further comprise one with said second winding inductor in parallel.
15, according to the said transformer of claim 13, wherein diode-bridge circuit comprises an input and output that is passed through by the alternating current of supplying with said second winding, and, said transformer further comprises a current transformer, this current transformer is responded to the alternating current in second winding, and comprise a secondary winding with first end and second end, said first end links to each other with output with the input of diode-bridge circuit respectively with second end.
16, according to the said transformer of claim 11, wherein said current transfer device comprises a diode-bridge circuit, the alternating current that this bridge circuit will be supplied with said second winding carries out rectification, and the first and second control windings of the electric current supply after such rectification, the electric current after this rectification is exactly a direct current of supplying with the control winding.
17,, further comprise an inductor, mutual first coil of connecting and second coils from parallel connection of coils in this inductor and said second winding according to the said transformer of claim 16.
18, according to the said transformer of claim 16, wherein said diode-bridge circuit comprises an input and output of supplying with the first and second AC coil alternating currents in said second winding, and said transformer further comprises a current transformer, this current transformer is responded to the alternating current in first and second AC coil in said second winding, and comprise a secondary winding with first end and second end, said first end links to each other with output with the input of said diode-bridge circuit respectively with second end.
19, transformer according to claim 11, first AC coil and said first control coil are so repeatedly on said second post in wherein said second winding, make said first air gap be positioned at the center of first AC coil of second winding and the center of said first control coil, and second AC coil of said second winding and said second control coil are so repeatedly on said the 3rd post, make said interstice be arranged in the center of said second winding, second AC coil and the center of said second control coil, and said primary and secondary winding is repeatedly on said first post.
20, according to the said transformer of claim 10, wherein said primary and secondary winding is to form by on said first post an and simplex winding that have tap.
21, transformer according to claim 12, wherein said elementary winding and said two secondary winding are that the simplex winding of and band tap on said first post by forms.
22, transformer according to claim 12, its number of turn of additional secondary winding of alternating current being provided wherein for first and second AC coil of said second winding is Ns, the number of turn of first and second AC coil of said second winding is N
A, the sectional area of said first post is S
1, the sectional area of said second post and the 3rd post is S
23, they satisfy following relationship:
Ns·S
1≥N
A·S
23
23, a kind of transformer comprises:
A magnetic core of forming by first post, second post and the 3rd post, each post all has first end and second end, and three first ends connect together by first common point of magnetic core, and three second ends, second common point by magnetic core connects together,
An elementary winding, this elementary winding are supplied with alternating current on said first post and by power supply,
One first AC Windings and one second AC Windings, these two windings are respectively on said second post and the 3rd post, and series connection mutually, and are powered to these two windings by the alternating current that the source current induction produces,
Alternating current in said elementary winding and said first and second AC Windings produces first exchange flux in by said first post and the determined closed magnetic circuit of second post, and in by said first post and the determined closed magnetic circuit of the 3rd post, produce second exchange flux, first and second exchange flux in first post mutually in the same way
The first control winding and the second control winding, these two control windings are respectively on said second post and the 3rd post, and series connection mutually, direct current is supplied with the said first and second control windings so that produce a D.C. magnetic field in by second post and the determined closed magnetic circuit of the 3rd post
Conversion equipment, this device is converted to direct current to the alternating current of supplying with said first and second AC Windings so that supply with the said first and second control windings, the size of supplying with the direct current of control winding changes along with the size variation of the alternating current in first and second AC Windings, thereby the density of line of magnetic force of said direct current flux is also changed thereupon, and control the second and the 3rd post respectively with respect to the permeability of said first and second exchange flux, and
A secondary winding, this winding is on said first post, thereby responded to mutual first and second exchange flux in the same way in first post, said secondary winding has two end points, between these two end points, connect two first and second AC Windings of series connection mutually, thereby with the alternating current in the secondary winding by these two end points, supply with said first and second AC Windings.
24, according to the transformer of claim 23, wherein said second post comprises the air gap of the total magnetic flux magnetic line of force in crosscut second post, and said the 3rd post comprises the air gap of the total magnetic flux magnetic line of force in crosscut the 3rd post.
25, according to the said transformer of claim 24, wherein said on first post and to be responded in its number of turn of secondary winding of first and second exchange flux be Ns, the number of turn of first and second AC Windings is N
A, the sectional area of first post is S
1, the sectional area of second post and the 3rd post is S
23, they satisfy following relationship:
Ns·S
1≥N
A·S
23
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103600 CN1037427A (en) | 1988-05-05 | 1988-05-05 | The transformer of the self-regulated reactance of band air gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103600 CN1037427A (en) | 1988-05-05 | 1988-05-05 | The transformer of the self-regulated reactance of band air gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1037427A true CN1037427A (en) | 1989-11-22 |
Family
ID=4832676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88103600 Pending CN1037427A (en) | 1988-05-05 | 1988-05-05 | The transformer of the self-regulated reactance of band air gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1037427A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093682C (en) * | 1999-06-28 | 2002-10-30 | 邓忠宪 | Magnetic core with continuously adjustable air gap |
| CN101308724B (en) * | 2007-02-17 | 2010-04-14 | 浙江大学 | Magnet integrate construction of transformer and inductor |
| CN102197446A (en) * | 2008-10-29 | 2011-09-21 | 通用电气公司 | Inductive and capacitive components integration structure |
| CN101572163B (en) * | 2008-03-14 | 2012-01-25 | Abb有限公司 | A reactor arrangement |
| CN102360863A (en) * | 2011-11-08 | 2012-02-22 | 田村（中国）企业管理有限公司 | Magnetic integrated double inductor |
| CN102891001A (en) * | 2012-09-11 | 2013-01-23 | 沈阳昊诚电气股份有限公司 | Three-phase transformer system and power grid with same |
| WO2016110013A1 (en) * | 2015-01-08 | 2016-07-14 | 山东大学 | Magnetically-controlled isolated multifunctional transformer |
| CN107005167A (en) * | 2014-12-16 | 2017-08-01 | 三菱电机株式会社 | Insulated type buck converter |
| CN108648899A (en) * | 2018-03-27 | 2018-10-12 | 华为技术有限公司 | A kind of magnetic integrated device, converter, circuit of power factor correction and method |
| CN111105925A (en) * | 2018-10-27 | 2020-05-05 | 杨勇 | High-voltage direct-current transmission line induction energy-taking device and method based on demagnetizing inductor filtering magnetic circuit |
| CN115841916A (en) * | 2022-12-29 | 2023-03-24 | 清华四川能源互联网研究院 | On-load tap changer based on magnetic amplifier principle and voltage regulation method |
-
1988
- 1988-05-05 CN CN 88103600 patent/CN1037427A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093682C (en) * | 1999-06-28 | 2002-10-30 | 邓忠宪 | Magnetic core with continuously adjustable air gap |
| CN101308724B (en) * | 2007-02-17 | 2010-04-14 | 浙江大学 | Magnet integrate construction of transformer and inductor |
| CN101572163B (en) * | 2008-03-14 | 2012-01-25 | Abb有限公司 | A reactor arrangement |
| CN102197446A (en) * | 2008-10-29 | 2011-09-21 | 通用电气公司 | Inductive and capacitive components integration structure |
| CN102197446B (en) * | 2008-10-29 | 2013-09-25 | 通用电气公司 | Inductive and capacitive components integration structure |
| CN102360863A (en) * | 2011-11-08 | 2012-02-22 | 田村（中国）企业管理有限公司 | Magnetic integrated double inductor |
| CN102891001A (en) * | 2012-09-11 | 2013-01-23 | 沈阳昊诚电气股份有限公司 | Three-phase transformer system and power grid with same |
| CN102891001B (en) * | 2012-09-11 | 2016-03-30 | 沈阳昊诚电气有限公司 | Three-phase transformer system and there is its electrical network |
| CN107005167B (en) * | 2014-12-16 | 2019-05-10 | 三菱电机株式会社 | Insulated type buck converter |
| CN107005167A (en) * | 2014-12-16 | 2017-08-01 | 三菱电机株式会社 | Insulated type buck converter |
| WO2016110013A1 (en) * | 2015-01-08 | 2016-07-14 | 山东大学 | Magnetically-controlled isolated multifunctional transformer |
| CN108648899A (en) * | 2018-03-27 | 2018-10-12 | 华为技术有限公司 | A kind of magnetic integrated device, converter, circuit of power factor correction and method |
| CN108648899B (en) * | 2018-03-27 | 2022-02-11 | 华为数字能源技术有限公司 | Magnetic integrated device, converter, power factor correction circuit and method |
| CN111105925A (en) * | 2018-10-27 | 2020-05-05 | 杨勇 | High-voltage direct-current transmission line induction energy-taking device and method based on demagnetizing inductor filtering magnetic circuit |
| CN111105925B (en) * | 2018-10-27 | 2021-12-28 | 杨勇 | High-voltage direct-current transmission line induction energy-taking device and method based on demagnetizing inductor filtering magnetic circuit |
| CN115841916A (en) * | 2022-12-29 | 2023-03-24 | 清华四川能源互联网研究院 | On-load tap changer based on magnetic amplifier principle and voltage regulation method |
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