CN105632712A - High-frequency, high-voltage and high-power rectification transformer - Google Patents

Abstract

The invention relates to a high-frequency, high-voltage and high-power rectification transformer. The high-frequency, high-voltage and high-power rectification transformer comprises a ultra-crystalline forming magnetic core, wherein primary frameworks sleeve both of two magnetic core arms, primary coils are wound around the primary frameworks, secondary frameworks sleeve outside the primary coils, an insulation layer is arranged between the secondary frameworks and the primary coils, secondary coils are wound around the secondary frameworks, press plates are arranged at the upper ends and the lower ends of the primary frameworks and the secondary frameworks, fixing structure units are arranged at the upper end and the lower end of the ultra-crystalline forming magnetic core, and a rectification plate is fixed outside the secondary coils through the fixing structure unit. With the adoption of the ultra-crystalline forming magnetic core, the magnetic core volume is greatly reduced, and the cost and the electromagnetic interference are reduced. Moreover, with the adoption of a modular and multi-combined design idea, the turns of the secondary coils are adjusted and the rectification mode is adjusted according to different levels of output voltage required by a transformer, and thus, the high-power, high-frequency and high-voltage rectification transformer with high voltage, positive or negative high voltage output and various combined powers is achieved.

Description

A kind of high-frequency and high-voltage high-power rectifier transformer

Technical field

The present invention relates to transformer technology field, especially a kind of high-frequency and high-voltage high-power rectifier transformer.

Background technology

Commonly using high-power high voltage power supply in present generation power supplies equipment, it is of many uses, has very important application in occasions such as manipulator, accelerator, laser, national defence. Existing high-power high-frequency high-voltage power supply, inverting has multiple classification, for different invertings, the requirement of high frequency transformer is also different. But, typically now think Switch Power Transformer should select soft magnetic ferrite be magnetic core to design high frequency high voltage transformer, be natural thing. Many discuss just for soft magnetic ferrite about the paper of high frequency high voltage transformer, monograph and teaching material, and to other soft magnetic materials sometimes illustratively, sometimes say nothing. But the shortcoming that this kind of transformator also has self, such as, operating frequency is relatively low, at below 50KHz, the high-frequency and high-voltage power supply this kind of transformator of selection that power is relatively larger, owing to soft magnetic ferrite magnetic flux density is low, the material needed during Design of Transformer is many, core volume is bigger, and this can cause processing difficulties, frangible and yield rate is low. Simultaneously because the magnetostriction of soft magnetic ferrite is big, can cause that this kind of high frequency high voltage transformer produces electromagnetic interference.

In recent years, design research and development find the soft magnetic characteristic that ultra-fine granule can also obtain, this is because when the diameter of granule is less than when can produce interactional length (about 30nm) between ferromagnetic particle, whole magnetic field would not change along with the change in individual particle direction. Then ultracrystallite shaped core arises at the historic moment, compare be Magnetic Core Design with soft magnetic ferrite high frequency high voltage transformer, ultracrystallite shaped core has the advantages such as low-down iron loss, very high saturation flux density, minimum magnetostriction, all be magnetic core with ultracrystallite high frequency high voltage transformer there is higher environment resistant interference performance, also can improve stability and the reliability of Switching Power Supply.

Summary of the invention

It is an object of the invention to provide a kind of employing ultracrystallite shaped core, the design cycle is short, cost is low, combined and instant, it is possible to realize high pressure, plus or minus High voltage output, the knockdown high-frequency and high-voltage high-power rectifier transformer of multiple power.

For achieving the above object, present invention employs techniques below scheme: a kind of high-frequency and high-voltage high-power rectifier transformer, including ultracrystallite shaped core, all sheathed primary skeleton on two magnetic core arm, primary skeleton is wound around primary line bag, secondary framework is set in the outside of primary line bag, between secondary framework and primary line bag, insulating barrier is set, secondary wire cladding winding is on secondary framework, primary skeleton and secondary framework upper, lower two ends are respectively provided with pressing plate, ultracrystallite shaped core upper, lower two ends arrange fixed structure unit, cowling panel is fixed on the outside of secondary wire bag by fixed structure unit.

The strap of winding on the whole of described ultracrystallite shaped core and Du Pont's paper, described primary skeleton is positioned at strap and the outside of Du Pont's paper.

Described primary skeleton is made up of structure the first primary skeleton identical and positioned opposite and the second primary skeleton, first primary skeleton and the second primary skeleton are respectively provided with for left and right spacing boss and groove, boss and groove are positioned opposite, on first primary skeleton and the second primary skeleton all on offer primary line bag crossed beam trunking, the length of described primary skeleton is consistent with the monolateral winding length of ultracrystallite shaped core.

Described secondary framework is made up of structure the first secondary framework identical and positioned opposite and second subprime skeleton, louvre is all offered in the centre position of the first secondary framework and second subprime skeleton, the both sides of the first secondary framework and second subprime skeleton are respectively provided with the winding slot for being wound around secondary wire bag, first secondary framework and second subprime skeleton are respectively provided with positive stop lug boss, the first secondary framework and all set out the fixing spacing hole of wire casing and outlet on second subprime skeleton.

Described fixed structure unit is formed by fixing steel lid, the fixing bakelite of PCB, PCB support bakelite, the extraction spacing clamping plate of copper bar, bakelite briquetting, bakelite limited support block and transformator lower supporter, described cowling panel is supported bakelite be fixed on before secondary wire bag by the fixing bakelite of PCB, PCB, and steel lid, transformator lower supporter are jointly fixing to be supported by fixing for described ultracrystallite shaped core, primary skeleton, primary line bag, secondary framework, secondary wire bag.

Safe distance d is left between both sides and the both sides of ultracrystallite shaped core of described secondary framework, the length of described secondary framework is the monolateral winding length difference with the safe distance d of twice of ultracrystallite shaped core, and wherein safe distance d is the electrical safety distance of transformator ceiling voltage outfan and die cast ultracrystalline magnetic core; The total number of turns N2 of described secondary wire bag is the transformator output ceiling voltage U2 number of turn N being multiplied by primary line bag divided by primary voltage U again, it may be assumed that

$N2=\frac{U2}{U}*N.$

Welding rectifier circuit on described cowling panel, described rectification circuit is bridge rectifier.

Described bakelite briquetting is positioned at the top of primary skeleton and secondary framework, described bakelite limited support block is positioned at the lower section of primary skeleton and secondary framework, bakelite briquetting and bakelite limited support block are positioned opposite, and the two is respectively provided with positive stop lug boss, primary skeleton and secondary framework are compressed by described bakelite briquetting, bakelite limited support block and pressing plate jointly; Described fixing steel lid is installed on bakelite briquetting, described bakelite limited support block is installed on transformator lower supporter, described cowling panel is installed on the fixing bakelite of PCB, the fixing bakelite of PCB is installed in PCB and supports on bakelite, PCB supports bakelite, the extraction spacing clamping plate of copper bar are all installed on fixing steel lid, and described fixing steel lid, bakelite briquetting, bakelite limited support block and transformator lower supporter are all offered the nylon screw hole for nylon screw rod traverse.

The computing formula of the number of turn N of described primary line bag is:

$N=\frac{U}{4.44\×f\×Ae\×Bm}$

Wherein, N is the number of turn of primary line bag, and U is transformer primary voltage, and f is transformator operating frequency, and Bm is the peak value of ultracrystallite shaped core, and the effective cross section that Ae is ultracrystallite shaped core is amassed.

As shown from the above technical solution, the present invention adopts ultracrystallite shaped core, substantially reduces core volume, reduces cost and electromagnetic interference; In addition, the present invention adopts modularity, multi-composite type mentality of designing, according to required transformer output voltage different brackets, adjusting the secondary wire bag number of turn, adjusting rectifier system, thus realizing high pressure, plus or minus High voltage output, multiple power combined high-power high-frequency and high-voltage rectifier transformer.

Accompanying drawing explanation

Fig. 1,2 structural representations being the present invention;

Fig. 3 is the structural representation of the first primary skeleton;

Fig. 4 is the mounting structure schematic diagram of primary skeleton, secondary framework and ultracrystallite shaped core;

Fig. 5,6 structural representations being secondary framework.

Detailed description of the invention

Such as Fig. 1, shown in 2, a kind of high-frequency and high-voltage high-power rectifier transformer, including ultracrystallite shaped core 1, all sheathed primary skeleton 2 on two magnetic core arm, primary skeleton 2 is wound around primary line bag, secondary framework 3 is set in the outside of primary line bag, between secondary framework 3 and primary line bag, insulating barrier 14 is set, secondary wire cladding winding is on secondary framework 3, primary skeleton 2 and secondary framework 3 upper, lower two ends are respectively provided with pressing plate 4, ultracrystallite shaped core 1 upper, lower two ends arrange fixed structure unit, cowling panel 5 is fixed on the outside of secondary wire bag by fixed structure unit. the strap of winding on the whole of described ultracrystallite shaped core 1 and Du Pont's paper, described primary skeleton 2 is positioned at strap and the outside of Du Pont's paper. welding rectifier circuit on described cowling panel 5, described rectification circuit is bridge rectifier.

Such as Fig. 3, shown in 4, described primary skeleton 2 is made up of the first primary skeleton 2b of primary skeleton 2a and the second that structure is identical and positioned opposite, the first primary skeleton 2b of primary skeleton 2a and the second is respectively provided with for a left side, the boss 2c and groove 2d of right limit, boss 2c and groove 2d is positioned opposite, that is, the groove arrangement of the primary skeleton 2b of boss alignment second of the first primary skeleton 2a, the boss of the primary skeleton 2b of groove alignment second of the first primary skeleton 2a is arranged, on the first primary skeleton 2b of primary skeleton 2a and the second all on offer primary line bag crossed beam trunking 2e, the length of described primary skeleton 2 is consistent with the monolateral winding length of ultracrystallite shaped core 1.

As shown in Figure 5,6, described secondary framework 3 is made up of structure the first secondary framework 3a identical and positioned opposite and second subprime skeleton 3b, louvre 3c is all offered in the centre position of the first secondary framework 3a and second subprime skeleton 3b, the both sides of the first secondary framework 3a and second subprime skeleton 3b are respectively provided with the winding slot 3d for being wound around secondary wire bag, first secondary framework 3a and second subprime skeleton 3b is respectively provided with positive stop lug boss 3e, the first secondary framework 3a and all set out the fixing spacing hole 3g of wire casing 3f and outlet on second subprime skeleton 3b.

As shown in Figure 1, 2, described fixed structure unit is formed by fixing steel lid 6, the fixing bakelite 7 of PCB, PCB support bakelite 8, the extraction spacing clamping plate 9 of copper bar, bakelite briquetting 10, bakelite limited support block 11 and transformator lower supporter 12, described cowling panel 5 is supported bakelite 8 be fixed on before secondary wire bag by the fixing bakelite 7 of PCB, PCB, and steel lid 6, transformator lower supporter 12 are jointly fixing to be supported by fixing for described ultracrystallite shaped core 1, primary skeleton 2, primary line bag, secondary framework 3, secondary wire bag. Described bakelite briquetting 10 is positioned at the top of primary skeleton 2 and secondary framework 3, described bakelite limited support block 11 is positioned at the lower section of primary skeleton 2 and secondary framework 3, bakelite briquetting 10 and bakelite limited support block 11 are positioned opposite, and the two is respectively provided with positive stop lug boss, primary skeleton 2 and secondary framework 3 are compressed by described bakelite briquetting 10, bakelite limited support block 11 and pressing plate 4 jointly; Described fixing steel lid 6 is installed on bakelite briquetting 10, described bakelite limited support block 11 is installed on transformator lower supporter 12, described cowling panel 5 is installed on the fixing bakelite 7 of PCB, the fixing bakelite 7 of PCB is installed in PCB and supports on bakelite 8, PCB supports bakelite 8, the extraction spacing clamping plate of copper bar 9 are all installed on fixing steel lid 6, and described fixing steel lid 6, bakelite briquetting 10, bakelite limited support block 11 and transformator lower supporter 12 are all offered the nylon screw hole 13 for nylon screw rod traverse.

As shown in Figure 1, 2, safe distance d is left between both sides and the both sides of ultracrystallite shaped core 1 of described secondary framework 3, the length of described secondary framework 3 is the monolateral winding length difference with the safe distance d of twice of ultracrystallite shaped core 1, and wherein safe distance d is the electrical safety distance of transformator ceiling voltage outfan and die cast ultracrystalline magnetic core; The total number of turns N2 of described secondary wire bag is the transformator output ceiling voltage U2 number of turn N being multiplied by primary line bag divided by primary voltage U again, it may be assumed that

$N2=\frac{U2}{U}*N.$

The computing formula of the number of turn N of described primary line bag is:

$N=\frac{U}{4.44\×f\×Ae\×Bm}$

Wherein, N is the number of turn of primary line bag, and U is transformer primary voltage, and f is transformator operating frequency, and Bm is the peak value of ultracrystallite shaped core 1, and the effective cross section that Ae is ultracrystallite shaped core 1 is amassed.

Below in conjunction with Fig. 1 to 6, the present invention is further illustrated.

The die cast ultracrystalline magnetic core of ultracrystallite shaped core 1 is VITROPERM500F, primary skeleton 2 is set on the magnetic core arm of the left and right sides of ultracrystallite shaped core 1, two-layer Du Pont paper is wrapped on its surface, the line bag of coiling primary from inside to outside, after coiling completes, copper strips is drawn from rectangular channel on the left of bakelite briquetting 10, fixes through drawing the spacing clamping plate 9 of copper bar;

Secondary framework 3 is set in the periphery of primary line bag, and leave certain distance with primary line bag, it is insulating barrier 14, secondary wire wrapping in the winding slot 3d of secondary framework 3 on, after coiling completes, warp is drawn the end of a thread by the fixing spacing hole 3g of outlet, secondary framework about 3 two ends pressing plate 4 is fixed, and then descends two ends bakelite briquetting 10 and bakelite limited support block 11 to fix thereon, does not allow it arbitrarily move;

The last upper surface at bakelite briquetting 10 is placed fixing steel lid 6, is drawn the spacing clamping plate 9 of copper bar, place transformator lower supporter 12 at bakelite limited support block 11 lower surface and use 4 nylon screw rods to carry out overall fixing through nylon screw hole 13, use nylon nut screws, and cowling panel 5 is fixed on after assembling PCB and supports on bakelite 8 and the fixing bakelite 7 of PCB.

Embodiment one

Ultracrystallite shaped core 1 adopts VITROPERM500F, the sectional area Ae of ultracrystallite shaped core 1 is 6.0cm2, monolateral winding length is 265mm, the effective area of its window coiling is 437.25cm2, primary skeleton 2 adopts epoxy bucket to process, and the sheet copper of primary line bag is wound on primary skeleton 2, and primary is totally 2 line bags, each around two the same line bags (noting Same Name of Ends during coiling, facilitate the series connection nearby of two bags) on two of magnetic core primary skeletons 2 respectively. Each line bag 0.5*200 (100mm²) sheet copper coiling 5 circle, divide 5 layers. During coiling, the copper strips of copper sheet section start welding 2*40*390 is drawn, and interlayer insulating film uses 2 layers of 0.25mm insulating paper, and outermost layer is with 8 layers of insulating paper and tightly wraps with cloth, and ending place is welded the copper strips of 2*40*390 equally and drawn; Weld Glabrous stings. The copper strips short circuit (screw of short circuit place M10 is fixed) of inter-stage 2*40*270 at the beginning of two, finally constitutes 1 primary. Insulating barrier adopts oil immersed type insulation, controls the two ends of secondary wire bag unit group and the distance of ultracrystallite shaped core 1 simultaneously.

Secondary framework 3 adopts epoxy bucket to process, and it is peripheral that secondary framework 3 is set in primary line bag, and leaves certain distance with primary line bag, is insulating barrier 14. Then each coiling 10 bag on two secondary frameworks 3 of magnetic core respectively. Start and the end head of each bag are determined by skeleton size. Draw length near 200mm, and with primary outlet across magnetic core (in other words in the other side of magnetic core). Each bag 66 circle, diameter 1.2mm wire coiling; Each bag divides 10 layers of coiling, every layer of coiling 7 circle, and coiling width is near 11mm, and height is within 18mm. And note, secondary layer insulation designs according to minimum 600V. Two terminal consolidation process of every section of secondary wire bag unit group, draw through the fixing spacing hole of outlet, it is simple to connect cowling panel.

Alternating current power supply connected by primary line bag, in winding, flow through alternating flow electricity produce magnetic induction electromotive force, then in closed magnetic core, just there is alternating flux, just, secondary windings cutting magnetic line, the alternating current of identical frequency just can be sensed in secondary, at the beginning of transformator, the turn ratio of secondary windings is equal to voltage ratio, just multiple output voltage can be produced when transformator has multiple secondary windings and tap, by required DC voltage can be obtained after bridge rectifier, therefore, at the beginning of increasing or reducing, secondary wire wire diameter, secondary wire holds group number and changes rectifier system, the high pressure thus realizing floating, positive or negative high voltage exports, multiple power combined high-power high-frequency and high-voltage rectification.

In sum, the present invention adopts modularity, multi-composite type mentality of designing, according to required transformer output voltage different brackets, adjusting the secondary wire bag number of turn, adjusting rectifier system, thus realizing high pressure, plus or minus High voltage output, multiple power combined high-power high-frequency and high-voltage rectifier transformer.

Claims (9)

1. a high-frequency and high-voltage high-power rectifier transformer, it is characterized in that: include ultracrystallite shaped core (1), all sheathed primary skeleton (2) on two magnetic core arm, primary skeleton (2) is upper is wound around primary line bag, secondary framework (3) is set in the outside of primary line bag, between secondary framework (3) and primary line bag, insulating barrier (14) is set, secondary wire cladding winding is on secondary framework (3), primary skeleton (2) and secondary framework (3) upper, lower two ends are respectively provided with pressing plate (4), ultracrystallite shaped core (1) upper, lower two ends arrange fixed structure unit, cowling panel (5) is fixed on the outside of secondary wire bag by fixed structure unit.

2. high-frequency and high-voltage high-power rectifier transformer according to claim 1, it is characterized in that: the strap of winding on the whole of described ultracrystallite shaped core (1) and Du Pont's paper, described primary skeleton (2) is positioned at strap and the outside of Du Pont's paper.

3. high-frequency and high-voltage high-power rectifier transformer according to claim 1, it is characterized in that: described primary skeleton (2) is made up of structure the first primary skeleton (2a) identical and positioned opposite and the second primary skeleton (2b), first primary skeleton (2a) and the second primary skeleton (2b) are respectively provided with for a left side, the boss (2c) of right limit and groove (2d), boss (2c) and groove (2d) are positioned opposite, on first primary skeleton (2a) and the second primary skeleton (2b) all on offer primary line bag crossed beam trunking (2e), the length of described primary skeleton (2) is consistent with the monolateral winding length of ultracrystallite shaped core (1).

4. high-frequency and high-voltage high-power rectifier transformer according to claim 1, it is characterized in that: described secondary framework (3) is made up of structure the first secondary framework (3a) identical and positioned opposite and second subprime skeleton (3b), louvre (3c) is all offered in the centre position of the first secondary framework (3a) and second subprime skeleton (3b), the both sides of the first secondary framework (3a) and second subprime skeleton (3b) are respectively provided with the winding slot (3d) for being wound around secondary wire bag, first secondary framework (3a) and second subprime skeleton (3b) are respectively provided with positive stop lug boss (3e), first secondary framework (3a) and second subprime skeleton (3b) all set out wire casing (3f) and the fixing spacing hole (3g) of outlet.

5. high-frequency and high-voltage high-power rectifier transformer according to claim 1, it is characterized in that: described fixed structure unit is by fixing steel lid (6), PCB fixes bakelite (7), PCB supports bakelite (8), draw the spacing clamping plate of copper bar (9), bakelite briquetting (10), bakelite limited support block (11) and transformator lower supporter (12) composition, described cowling panel (5) is by the fixing bakelite (7) of PCB, PCB supports bakelite (8) and is fixed on before secondary wire bag, described ultracrystallite shaped core (1), primary skeleton (2), primary line bag, secondary framework (3), secondary wire bag is by fixing steel lid (6), transformator lower supporter (12) is jointly fixing to be supported.

6. high-frequency and high-voltage high-power rectifier transformer according to claim 1, it is characterized in that: between both sides and the both sides of ultracrystallite shaped core (1) of described secondary framework (3), leave safe distance d, the length of described secondary framework (3) is the monolateral winding length difference with the safe distance d of twice of ultracrystallite shaped core (1), and wherein safe distance d is the electrical safety distance of transformator ceiling voltage outfan and die cast ultracrystalline magnetic core; The total number of turns N2 of described secondary wire bag is the transformator output ceiling voltage U2 number of turn N being multiplied by primary line bag divided by primary voltage U again, it may be assumed that

$N2=\frac{U2}{U}*N.$

7. high-frequency and high-voltage high-power rectifier transformer according to claim 1, it is characterised in that: the upper welding rectifier circuit of described cowling panel (5), described rectification circuit is bridge rectifier.

8. high-frequency and high-voltage high-power rectifier transformer according to claim 5, it is characterized in that: described bakelite briquetting (10) is positioned at the top of primary skeleton (2) and secondary framework (3), described bakelite limited support block (11) is positioned at the lower section of primary skeleton (2) and secondary framework (3), bakelite briquetting (10) and bakelite limited support block (11) are positioned opposite, and the two is respectively provided with positive stop lug boss, described bakelite briquetting (10), primary skeleton (2) and secondary framework (3) are compressed by bakelite limited support block (11) and pressing plate (4) jointly, described fixing steel lid (6) is installed on bakelite briquetting (10), described bakelite limited support block (11) is installed on transformator lower supporter (12), described cowling panel (5) is installed on the fixing bakelite (7) of PCB, PCB fixes bakelite (7) and is installed on PCB support bakelite (8), PCB supports bakelite (8), draw the spacing clamping plate of copper bar (9) and be all installed on fixing steel lid (6), described fixing steel lid (6), bakelite briquetting (10), bakelite limited support block (11) and transformator lower supporter (12) are all offered the nylon screw hole (13) for nylon screw rod traverse.

9. a kind of high-frequency and high-voltage high-power rectifier transformer according to claim 6, it is characterised in that: the computing formula of the number of turn N of described primary line bag is:

$N=\frac{U}{4.44\×f\×Ae\×Bm}$

Wherein, N is the number of turn of primary line bag, and U is transformer primary voltage, and f is transformator operating frequency, and Bm is the peak value of ultracrystallite shaped core (1), and the effective cross section that Ae is ultracrystallite shaped core (1) is amassed.