CN106229123A - A kind of stagewise high-power high-frequency high-voltage transformator and segmentation winding method thereof - Google Patents

Abstract

The invention discloses a kind of stagewise high-power high-frequency high-voltage transformator, including magnetic core, the outer wrap of magnetic core has insulation framework, insulation framework is wound with armature winding and secondary windings successively, is wound with insulating barrier between armature winding and secondary windings.The invention also discloses the segmentation winding method of a kind of stagewise high frequency high voltage transformer, on the basis of original primary and secondary winding hierarchical design, further reduce the voltage between layers of primary and secondary winding, thus reduce the insulation index of the interlayer of primary and secondary winding.It addition, the stagewise winding method of high frequency high voltage transformer can be effectively reduced the equivalent parasitic capacitances between the equivalent parasitic capacitances of primary and secondary winding and primary and secondary winding, thus reduce conducted EMI noise.Meanwhile, the invention allows for the segments design of a kind of high frequency high voltage transformer, contribute to reducing the volume of high frequency high voltage transformer, and reduce the leakage inductance of transformator.

Description

A kind of stagewise high-power high-frequency high-voltage transformator and segmentation winding method thereof

Technical field

The invention belongs to high-frequency high-voltage switch power source technical field, be specifically related to a kind of stagewise high-power high-frequency high-voltage and become Depressor, the invention still further relates to the segmentation winding method of above-mentioned high frequency high voltage transformer.

Background technology

High frequency high voltage transformer is the operating frequency power transformer more than 10kHz, and it includes magnetic core, armature winding, secondary Level winding and corresponding insulation configuration.The voltage of the secondary windings of high frequency high voltage transformer is general the biggest, so necessarily requires Secondary windings has higher insulation, and insulation is one of difficult problem in current high frequency high voltage transformer development process.Current solution Certainly secondary windings is mainly layered coiling by scheme, but owing to the voltage of secondary windings is relatively big, it is high that multi-segment can increase high frequency The volume of pressure transformer, increases the leakage inductance of transformator simultaneously.It addition, use multi-segment structure, high frequency high voltage transformer just, secondary The parasitic capacitance of level winding interlayer can increase, and this can provide coupling path for conducted EMI noise.

Summary of the invention

It is an object of the invention to provide a kind of stagewise high-power high-frequency high-voltage transformator, solve the layering of current transformator The problem that the volume that structure causes more increases, leakage inductance increases.

It is a further object of the present invention to provide the segmentation winding method of a kind of stagewise high-power high-frequency high-voltage transformator.

The first technical scheme of the present invention is, a kind of stagewise high-power high-frequency high-voltage transformator, including magnetic Core, the outer wrap of magnetic core has insulation framework, and insulation framework is wound with armature winding and secondary windings successively, armature winding and Insulating barrier it is wound with between secondary windings.

The feature of the first technical scheme of the present invention also resides in,

Wherein insulation framework includes completely identical in structure skeleton Part I and skeleton Part II, skeleton Part I With the structure of skeleton Part II it is: include sleeve a, sleeve b and the sleeve c of the most coaxial socket, the one of sleeve a End end face concordant with one end end face of one end end face of sleeve b, sleeve c respectively, the other end end face of sleeve a respectively with sleeve b Other end end face, sleeve c other end end face concordant, be provided with gear between one end end face and one end end face of sleeve b of sleeve c Plate, baffle plate simultaneously with this end end face of sleeve c, this concordant setting of end end face of sleeve b, and by this end end face of sleeve c and sleeve b Space between this end end face is blocked, and is provided with at least two segmentation bar a between sleeve b and sleeve a, and each segmentation bar a is equal Even being distributed between sleeve b and sleeve a, the outer wall of sleeve c is provided with at least two segmentation bar b, segmentation bar a and segmentation bar b number Measuring identical, each segmentation bar a is located along the same line with a segmentation bar b accordingly, and each segmentation bar a and each segmentation bar b all with Sleeve a, sleeve b and the central axis upright of sleeve c.

Magnetic core is arranged between sleeve b and sleeve c, and magnetic core is entered by skeleton Part I and skeleton Part II symmetry zoarium Row parcel, one end end face of magnetic core is covered by the baffle plate on skeleton Part I, and the other end end face of magnetic core is by second, skeleton Baffle plate on Fen covers, and insulation framework is as the insulation between magnetic core and armature winding.

Wherein armature winding and secondary windings all at least 1 layer, between adjacent two layers armature winding, adjacent two layers secondary around Insulating barrier it is equipped with between group.

The second technical scheme of the present invention is, the segmentation coiling side of a kind of stagewise high frequency high voltage transformer Method, specifically includes following steps:

Step 1, determines the coiling parameter of high frequency high voltage transformer；

Step 2, calculates the hierarchy number m of armature winding respectively_pHierarchy number m with secondary windings_s；

Step 3, calculates the segments n, segments n of high frequency high voltage transformer equal to segmentation bar a and the quantity of segmentation bar b；

Step 4, recalculates the hierarchy number of armature winding and secondary windings respectively according to the result of calculation of step 3 gained, And it is designated as m respectively_p' and m_s', respectively by m_p' and m_p、m_sWith m_s' compare, take smaller value as armature winding and secondary windings Hierarchy number；

Step 5, arranges segmentation bar a and the segmentation of respective numbers in insulation framework according to the result of calculation of step 3 gained Bar b；

Specifically, arrange the segmentation bar a identical with segments between sleeve a and sleeve b；Outside setting at sleeve c The segmentation bar b identical with segments；

Step 6, according to the primary of the less armature winding hierarchy number coiling high frequency high voltage transformer taken in step 4 around Group, the segmentation bar a and the segmentation bar b that arrange according to step 5 during coiling are that boundary carries out segmentation coiling；

Step 7, according to the primary of the less secondary windings hierarchy number coiling high frequency high voltage transformer taken in step 4 around Group, the segmentation bar a and the segmentation bar b that arrange according to step 5 during coiling are that boundary carries out segmentation coiling.

The feature of the second technical scheme of the present invention also resides in,

The parameter that wherein determines in step 1 particularly as follows:

High frequency high voltage transformer magnetic core material, the armature winding number of turn, number of share of stock and wire gauge；Secondary winding turns, number of share of stock And wire gauge.

Wherein the detailed process of step 2 is:

Known: primary winding voltage U_p, the maximum pressure U of armature winding interlayer₁；

Secondary winding voltage U_s, the maximum pressure U of secondary windings interlayer₂；

The hierarchy number m of armature winding is calculated according to equation below (1)_p:

$m_p=\frac{U_p}{U_1}---\left(1\right);$

Wherein, as 0 ＜ m_pWhen≤1, m_p=1；

As a ＜ m_pDuring≤b, wherein b ＞ a >=1, b-a=2, and a, b are odd number, now,

As a ＜ m_pDuring≤a+2 × 15%, m_p=a；

As a+2 × 15% ＜ m_pDuring≤b, m_p=b；

The hierarchy number m of secondary windings is calculated according to equation below (2)_s:

$m_s=\frac{U_s}{U_2}---\left(2\right);$

Wherein, as 0 ＜ m_sWhen≤1, m_s=1；

As c ＜ m_sDuring≤d, wherein d ＞ c >=1, d-c=2, and c, d are odd number, now,

As c ＜ m_sDuring≤c+2 × 15%, m_s=c；

As c+2 × 15% ＜ m_sDuring≤d, m_s=d.

Wherein, the detailed process of step 3 is:

Segments n according to equation below (3) calculating high frequency high voltage transformer:

N=-15.38lgk₁-18.77 (3)；

Wherein, k₁=min{C_pn,C_sn,C_psn, k₁For target proportion coefficient；

C_pnParasitic capacitance proportionality coefficient for armature winding；

C_snParasitic capacitance proportionality coefficient for secondary windings；

C_psnFor the parasitic capacitance proportionality coefficient between primary and secondary winding；

C_pn、C_sn、C_psnSpan all exist

Wherein the detailed process of step 4 is:

The number of stories m of armature winding in high frequency high voltage transformer is recalculated according to equation below (4)_p':

m_p'=m_p×k₂(4)；

Wherein, k₂Segmented compensation coefficient for armature winding；

Work as m_p′≥m_pTime, the hierarchy number of armature winding is m_pOtherwise, the hierarchy number of armature winding is m_p′；

The number of stories m of secondary windings in high frequency high voltage transformer is recalculated according to equation below (5)_s':

m_s'=m_s×k₃(5)；

Wherein, k₃Segmented compensation coefficient for secondary windings；

Work as m_s′≥m_sTime, the hierarchy number of secondary windings is m_sOtherwise, the hierarchy number of secondary windings is m_s′。

Wherein the detailed process of step 6 is:

Step 6.1, the armature winding hierarchy number determined according to step 4, coiling ground floor armature winding in insulation framework, Concrete winding process is:

To be positioned at a collinear segmentation bar a and a segmentation bar b as a boundary group, adjacent two boundary groups Magnetic core is uniformly divided into n section, take wherein one section as the 1st section, start coiling armature winding, the 1st section of armature winding coiling completes After, from the outside of sleeve c, inside to sleeve a strides across boundary group and carries out the coiling of the 2nd section, according to from the 1st section to the 2nd section transition Time the coiling successively of cross-line mode residue hop count, until divided n section coiling is completed；

Step 6.2 is straight according to the armature winding of the winding process coiling residue number of plies of ground floor armature winding in step 6.1 To around complete；During coiling armature winding, coiling insulating barrier between adjacent two layers armature winding；

Step 6.3, coiling insulating barrier on the armature winding after step 6.2 coiling completes；

Step 6.4, carries out vacuum paint dipping process to high frequency high voltage transformer.

Wherein the detailed process of step 7 is:

Step 7.1, the secondary windings hierarchy number determined according to step 4, coiling on the insulating barrier of armature winding coiling One hierarchical level winding, concrete winding process is:

To be positioned at a collinear segmentation bar a and a segmentation bar b as a boundary group, adjacent two boundary groups Magnetic core is uniformly divided into n section, takes relative with armature winding inlet wire section as the 1st section, start coiling secondary windings, the 1st section After secondary windings coiling completes, from the outside of sleeve c, inside to sleeve a strides across boundary group and carries out the coiling of the 2nd section, according to from The 1st section of cross-line mode coiling successively residue hop count when the 2nd section of transition, until completing divided n section coiling；

Step 7.2 is straight according to the secondary windings of the winding process coiling residue number of plies of ground floor secondary windings in step 7.1 To around complete；During coiling secondary windings, coiling insulating barrier between adjacent two layers secondary windings；

Step 7.3, coiling insulating barrier on the secondary windings after step 7.2 coiling completes；

Step 7.4, carries out vacuum paint dipping process to high frequency high voltage transformer.

The invention has the beneficial effects as follows, the stagewise winding method of high frequency high voltage transformer that the present invention proposes and existing Method is compared advantage and is, on the basis of original primary and secondary winding hierarchical design, further reduces primary and secondary winding Voltage between layers, thus reduce the insulation index of the interlayer of primary and secondary winding.It addition, the stagewise of high frequency high voltage transformer The equivalent parasitic electricity that winding method can be effectively reduced between the equivalent parasitic capacitances of primary and secondary winding and primary and secondary winding Hold, thus reduce conducted EMI noise.Meanwhile, the invention allows for the segments design side of a kind of high frequency high voltage transformer Case, contributes to reducing the volume of high frequency high voltage transformer, and reduces the leakage inductance of transformator.

Accompanying drawing explanation

Fig. 1 is the transverse sectional view of the present invention a kind of stagewise high-power high-frequency high-voltage transformator；

Fig. 2 is the Electric Field Distribution curve between the transformer secondary output winding two-layer of unsegmented layer winding；

Fig. 3 be the segmentation winding method of a kind of stagewise high frequency high voltage transformer embodiment in the transformation of point four sections of windings Electric Field Distribution curve between device secondary windings two-layer.

In figure, 1. magnetic core, 2. armature winding, 3. secondary windings, 4. insulating barrier, 5. sleeve a, 6. sleeve b, 7. sleeve c, 8. Segmentation bar a, 9. segmentation bar b.

Detailed description of the invention

The present invention is described in detail with detailed description of the invention below in conjunction with the accompanying drawings.

One stagewise high-power high-frequency high-voltage transformator of the present invention, structure as it is shown in figure 1, include magnetic core 1, magnetic core 1 Outer wrap has insulation framework, and insulation framework is wound with armature winding 2 and secondary windings 3 successively, armature winding 2 and secondary around It is wound with insulating barrier 4 between group 3.

Insulation framework includes completely identical in structure skeleton Part I and skeleton Part II, skeleton Part I and bone The structure of frame Part II is: include sleeve a5, sleeve b6 and the sleeve c7 of the most coaxial socket, the one of sleeve a5 End end face concordant with one end end face of one end end face of sleeve b6, sleeve c7 respectively, the other end end face of sleeve a5 respectively with set The cylinder other end end face of b6, sleeve c7 other end end face concordant, one end end face of sleeve c7 and one end end face of sleeve b6 it Between be provided with baffle plate, baffle plate is annular, and baffle plate simultaneously this end (one end) end face with sleeve c7 this end (one end) end face, sleeve b6 is put down Neat setting, and the space between this end end face of sleeve c7 and this end end face of sleeve b6 is blocked, sleeve b6 and sleeve It is provided with at least two segmentation bar a8, each segmentation bar a8 between a5 to be evenly distributed between sleeve b6 and sleeve a5, outside sleeve c7 It is identical with segmentation bar b9 quantity that wall is provided with at least two segmentation bar b9, segmentation bar a8, each segmentation bar a8 corresponding with one point Section bar b9 be located along the same line, and each segmentation bar a8 and each segmentation bar b9 all with sleeve a5, sleeve b6 and the center of sleeve c7 Axis is vertical.

Magnetic core 1 is arranged between sleeve b6 and sleeve c7, and skeleton Part I and skeleton Part II symmetry are fit by magnetic Core 1 wraps up, and one end end face of magnetic core 1 is covered by the baffle plate on skeleton Part I, and the other end end face of magnetic core 1 is by skeleton Baffle plate on Part II covers, and insulation framework is as the insulation between magnetic core 1 and armature winding 2.

Wherein armature winding 2 and secondary windings 3 all at least 1 layer, between adjacent two layers armature winding 2, adjacent two layers It is equipped with insulating barrier 4 between level winding 3.

The segmentation winding method of the present invention a kind of stagewise high frequency high voltage transformer, specifically includes following steps:

Step 1, determines the coiling parameter of high frequency high voltage transformer；

The parameter that determines particularly as follows: high frequency high voltage transformer magnetic core 1 material and shape, armature winding 2 number of turn, number of share of stock and lead Line specification；Secondary windings 3 number of turn, number of share of stock and wire gauge；Between armature winding 2 interlayer, armature winding 2 and secondary windings 3, secondary Insulation index outside level winding 3 interlayer and secondary windings 3, and the specification of insulating paper is determined according to insulation index；Armature winding Voltage U_p, armature winding interlayer is pressure U₁；Secondary winding voltage U_s, secondary windings interlayer is pressure U₂；

Step 2, calculates the hierarchy number m of armature winding 2 respectively_pHierarchy number m with secondary windings 3_s；

The detailed process of step 2 is:

Known: armature winding 2 voltage U_p, the maximum pressure U of armature winding 2 interlayer₁；

Secondary windings 3 voltage U_s, the maximum pressure U of secondary windings 3 interlayer₂；

U herein₁And U₂It is to determine according to the insulating process can accomplished in Practical Project, with primary and secondary winding electricity Press unrelated；

The hierarchy number m of armature winding is calculated according to equation below (1)_p:

$m_p=\frac{U_p}{U_1}---\left(1\right);$

For result of calculation m in above formula (1)_pSelection, it is contemplated that hierarchy number is that odd number can facilitate transformator around primary The coiling into and out of line of winding 2, specific as follows:

As 0 ＜ m_pWhen≤1, m_p=1；

As a ＜ m_pDuring≤b, wherein b ＞ a >=1, b-a=2, and a, b are odd number, now,

As a ＜ m_pDuring≤a+2 × 15%, m_p=a；

As a+2 × 15% ＜ m_pDuring≤b, m_p=b；

The hierarchy number m of secondary windings is calculated according to equation below (2)_s:

$m_s=\frac{U_s}{U_2}---\left(2\right);$

For result of calculation m in above formula (2)_sSelection, it is contemplated that hierarchy number is that odd number can facilitate transformator around secondary The coiling into and out of line of winding 3, specific as follows:

As 0 ＜ m_sWhen≤1, m_s=1；

As c ＜ m_sDuring≤d, wherein d ＞ c >=1, d-c=2, and c, d are odd number, now,

As c ＜ m_sDuring≤c+2 × 15%, m_s=c；

As c+2 × 15% ＜ m_sDuring≤d, m_s=d.

Step 3, calculates the segments n, segments n of high frequency high voltage transformer equal to segmentation bar a8 and the number of segmentation bar b9 Amount；Concrete calculating process is as follows:

Segments n according to equation below (3) calculating high frequency high voltage transformer:

N=-15.38lgk₁-18.77 (3)；

Wherein, k₁=min{C_pn,C_sn,C_psn, k₁For target proportion coefficient；

C_pnParasitic capacitance proportionality coefficient for armature winding 2；C_pnFor high frequency high voltage transformer armature winding 2 during unsegmented Equivalent parasitic capacitances and segmentation after the ratio of preferable equivalent parasitic capacitances of high frequency high voltage transformer armature winding 2；

C_snParasitic capacitance proportionality coefficient for secondary windings 3；C_snFor high frequency high voltage transformer secondary windings 3 during unsegmented Equivalent parasitic capacitances and segmentation after the ratio of preferable equivalent parasitic capacitances of high frequency high voltage transformer secondary windings 3；

C_psnFor the parasitic capacitance proportionality coefficient between armature winding 2 and secondary windings 3；C_psnFor high-frequency and high-voltage during unsegmented Between primary winding 2 and secondary windings 3 equivalent parasitic capacitances and segmentation after high frequency high voltage transformer armature winding 2 And the ratio of the preferable equivalent parasitic capacitances between secondary windings 3；

C_pnSpan beC_snSpan existC_psnSpan exist

Step 4, recalculates armature winding 2 and the layering of secondary windings 3 respectively according to the result of calculation of step 3 gained Number, and it is designated as m respectively_p' and m_s', by m_p' and m_p, compare, take the layering as armature winding 2 of the smaller value therebetween Number；By m_sWith m_s' compare, take the hierarchy number as secondary windings 3 of the smaller value therebetween；

The detailed process of step 4 is:

The number of stories m of armature winding 2 in high frequency high voltage transformer is recalculated according to equation below (4)_p':

m_p'=m_p×k₂(4)；

Wherein, k₂Segmented compensation coefficient for armature winding 2；k₂The segments n of size and high frequency high voltage transformer have Close, table look-up generally according to practical experience value and obtain, shown in table 1 specific as follows；

Table 1

n	1	2	3	4	5	6
							k2	1	0.95	0.9	0.85	0.8	0.75
n	7	8	9	10	11	12
							k2	0.68	0.61	0.53	0.44	0.34	0.24

Table 1 is k₂Table is contrasted with the experience of segments n；

Work as m_p′≥m_pTime, the hierarchy number of armature winding 2 is m_p, work as m_p' m_pTime, the hierarchy number of armature winding 2 is m_p′；

The number of stories m of secondary windings in high frequency high voltage transformer is recalculated according to equation below (5)_s':

m_s'=m_s×k₃(5)；

Wherein, k₃Segmented compensation coefficient for secondary windings；k₃Size relevant with the segments n of high frequency high voltage transformer, Table look-up generally according to practical experience value and obtain, shown in table 2 specific as follows:

Table 2

n	1	2	3	4	5	6
							k3	1	0.88	0.76	0.65	0.55	0.47
n	7	8	9	10	11	12
							k3	0.41	0.36	0.33	0.30	0.27	0.25

Work as m_s′≥m_sTime, the hierarchy number of secondary windings is m_s, work as m_s' m_sTime, the hierarchy number of secondary windings is m_s′；

Step 5, arranges segmentation bar a8 and the segmentation of respective numbers in insulation framework according to the result of calculation of step 3 gained Bar b9；Specifically, arrange the segmentation bar a8 identical with segments between sleeve a5 and sleeve b6；Outside setting at sleeve c7 The segmentation bar b9 identical with segments；

Step 6, according to the primary of the less armature winding hierarchy number coiling high frequency high voltage transformer taken in step 4 around Group 2, the segmentation bar a8 and the segmentation bar b9 that arrange according to step 5 during coiling are that boundary carries out segmentation coiling；

The detailed process of step 6 is:

Step 6.1, the armature winding hierarchy number determined according to step 4, coiling ground floor armature winding in insulation framework 2, concrete winding process is:

To be positioned at a collinear segmentation bar a8 and a segmentation bar b9 as a boundary group, adjacent two boundary Magnetic core 1 is uniformly divided into n section by group, take wherein one section as the 1st section, start coiling armature winding 2, the 1st section of armature winding coiling After completing, from the outside of sleeve c7, inside to sleeve a5 strides across boundary group and carries out the coiling of the 2nd section of armature winding, according to from 1 section of cross-line mode coiling successively residue hop count when the 2nd section of transition, until completing divided n section coiling；

Step 6.2, according to the armature winding 2 of the winding process coiling residue number of plies of ground floor armature winding 2 in step 6.1 Until till complete；During coiling armature winding 2, coiling insulating barrier 4 between adjacent two layers armature winding；Insulating barrier 4 when coiling, and the insulation winding structure of odd-level is: strip insulation band longitudinal tape around；The winding structure of even level insulation is: whole The horizontal face of insulating paper around；Often insulate around two-layer and high frequency high voltage transformer is carried out a vacuum paint dipping；

Step 6.3, coiling insulating barrier 4 on the armature winding 2 after step 6.2 coiling completes；During insulating barrier 4 coiling, very The insulation winding structure of several layers is: strip insulation band longitudinal tape around；The winding structure of even level insulation is: whole insulating paper is horizontal Face around；Often insulate around two-layer and high frequency high voltage transformer is carried out a vacuum paint dipping；

Step 6.4, carries out vacuum paint dipping process to high frequency high voltage transformer.

Step 7, according to the secondary of the less secondary windings hierarchy number coiling high frequency high voltage transformer taken in step 4 around Group 3, the segmentation bar a8 and the segmentation bar b9 that arrange according to step 5 during coiling are that boundary carries out segmentation coiling.

The detailed process of step 7 is:

Step 7.1, the secondary windings hierarchy number determined according to step 4, coiling on the insulating barrier 4 of armature winding 2 coiling Ground floor secondary windings 3, concrete winding process is:

Secondary windings 3 determines in step 6.1 and carries out coiling in decomposition group, i.e. to be positioned at a collinear segmentation bar Magnetic core is uniformly divided into n section as a boundary group, adjacent two boundary groups, takes and armature winding 2 by an a8 and segmentation bar b9 Relative one section of inlet wire, as the 1st section, starts coiling secondary windings 3, after the 1st section of secondary windings coiling completes, from sleeve c7's Outside stride across boundary group to the inside of sleeve a5 and carry out the coiling of the 2nd section, according to from the 1st section to cross-line side during the 2nd section of transition Formula coiling successively residue hop count, until completing divided n section coiling；

Step 7.2, according to the secondary windings of the winding process coiling residue number of plies of ground floor secondary windings 3 in step 7.1 Until till complete；During coiling secondary windings 3, coiling insulating barrier 4 between adjacent two layers secondary windings 3；Insulation Layer 4 coiling time, the insulation winding structure of odd-level is: strip insulation band longitudinal tape around；The winding structure of even level insulation is: whole The horizontal face of insulating paper around；Often insulate around two-layer and high frequency high voltage transformer is carried out a vacuum paint dipping；

Step 7.3, coiling insulating barrier 4 on the secondary windings 3 after step 7.2 coiling completes；During insulating barrier 4 coiling, very The insulation winding structure of several layers is: strip insulation band longitudinal tape around；The winding structure of even level insulation is: whole insulating paper is horizontal Face around；Often insulate around two-layer and high frequency high voltage transformer is carried out a vacuum paint dipping；

Step 7.4, carries out vacuum paint dipping process to high frequency high voltage transformer.

Embodiment 1

Determine that high frequency high voltage transformer magnetic core 1 structure is circle the ribbon shape iron core；Armature winding 2 number of turn is 9 circles, and number of share of stock is 190 strands；Secondary windings 3 number of turn is 120 circles, and number of share of stock is 12 strands, wire be line footpath be 0.63mm, the pressure enamel-covered wire for 1.3kV； The insulation index of armature winding 2 interlayer is 20kV, and insulating paper used is the white composite-insulating paper of pressure 6.0kV, armature winding 2 And the insulation index between secondary windings 3 is 36kV, insulating paper used is the white composite-insulating paper of pressure 6.0kV, secondary around Organizing 3 layer insulation indexs is 20kV, and insulating paper used is the white composite-insulating paper of pressure 6.0kV, and secondary windings 3 is outside i.e. to be become Depressor external protection insulation index is 10kV, and insulating paper used is the mylar of pressure 3.0kV；

Known: primary winding voltage U_p=500V, armature winding interlayer is pressure U₁=1500V；

Secondary winding voltage U_s=6000V, secondary windings interlayer is pressure U₂=1500V；

The hierarchy number computing formula of armature winding 2 is as follows:

$m_p=\frac{U_p}{U_1}$

According to above formula, the armature winding hierarchy number that can calculate high frequency high voltage transformer is:

$m_p=\frac{U_p}{U_1}=\frac{500}{1500}=0.33$

Due to 0 ＜ m_p=0.33≤1, therefore m_p=1；

The hierarchy number computing formula of secondary windings 3 is as follows:

$m_s=\frac{U_s}{U_2}$

According to above formula, the secondary windings hierarchy number that can obtain high frequency high voltage transformer is:

$m_s=\frac{U_s}{U_2}=\frac{6000}{1500}=4$

Due to 3 ＜ m_s=4≤5, i.e. c=3, d=5；And 3+2 × 15% ＜ m_s=4≤5, therefore m_s=d=5；

In sum, determining that armature winding 2 hierarchy number of high frequency high voltage transformer is 1 layer, secondary windings 3 hierarchy number is 5 Layer.

Determine the segments n (i.e. armature winding 2 and the segments of secondary windings 3) of high frequency high voltage transformer；Concrete calculating As follows:

By C_pn,C_sn,C_psnAll take according to representative valueI.e. determine

Then the segments of high frequency high voltage transformer is:

Here taking n is 4, i.e. segments is 4 sections.

Redefine the hierarchy number m of the armature winding of high frequency high voltage transformer_p' and secondary windings hierarchy number m_s',

Look into table 1 and obtain n=4, determine k₂=0.85；

Then

m_p'=m_p×k₂=1 × 0.85=0.85；

Due to 0 ＜ m_p'=0.85≤1, therefore m_p'=1；

m_p'=m_p=1；

The i.e. hierarchy number of high frequency high voltage transformer armature winding 2 is 1 layer；

Look into table 2 and obtain n=4, determine k₃=0.65；

Then

m_s'=m_s×k₃=5 × 0.65=3.25；

Due to 3 ＜ m_s'=3.25≤5, i.e. c=3, d=5；And 3 ＜ m_s=3.25≤3+2 × 15%, therefore m_s'=c= 3；

Due to m_s'=c=3 < m_s=5,

Therefore, the hierarchy number of high frequency high voltage transformer secondary windings 3 is 3 layers；

In sum,

The hierarchy number of the high frequency high voltage transformer finally determined is:

Armature winding hierarchy number is 1 layer, and secondary windings hierarchy number is 3 layers；

The segments of the high frequency high voltage transformer finally determined is 4 sections.

The segmentation bar a8 and segmentation bar b9 of respective numbers are set in insulation framework according to segments 4 obtained above；Tool Body is, arranges 4 segmentation bar a8 between sleeve a5 and sleeve b6；4 segmentation bar b9 are set in the outside of sleeve c7；

1 layer of armature winding of winding in insulation framework, concrete winding process is:

To be positioned at a collinear segmentation bar a8 and a segmentation bar b9 as a boundary group, adjacent two boundary Magnetic core 1 is uniformly divided into 4 sections by group, take wherein one section as the 1st section, start coiling armature winding 2, the 1st section of armature winding coiling After completing, from the outside of sleeve c7, inside to sleeve a5 strides across boundary group and carries out the coiling of the 2nd section of armature winding, according to from 1 section of cross-line mode coiling successively residue hop count when the 2nd section of transition, until completing 4 sections of divided coilings；Complete in coiling Armature winding 2 on coiling insulating barrier 4, during insulating barrier 4 coiling, the insulation winding structure of odd-level is: strip insulation band is longitudinally Band around；The winding structure of even level insulation is: whole horizontal face of insulating paper around；Often around two-layer insulation, high frequency high voltage transformer is entered Vacuum paint dipping of row；Armature winding 2 after insulating barrier 4 winding being completed, carry out a vacuum to high frequency high voltage transformer Dipping lacquer；

Then coiling secondary windings 3 in the boundary group determined when coiling armature winding 2, secondary windings 3 winding 3 layers altogether, During the ground floor of coiling secondary windings 3, take a section relative with armature winding 2 inlet wire as the 1st section, start coiling secondary windings After 3, the 1st section of secondary windings coiling completes, from inside from the outside of sleeve c7 to sleeve a5 stride across boundary group carry out the 2nd section around System, remains hop count according to from the 1st section to the cross-line mode coiling successively during the 2nd section of transition, until by complete for divided 4 sections of coilings Become；The secondary windings of 2 numbers of plies is remained until till complete according to the winding process coiling of ground floor secondary windings 3；In coiling time During level winding 3, coiling insulating barrier 4 between adjacent two layers secondary windings 3；During insulating barrier 4 coiling, the insulation of odd-level Winding structure is: strip insulation band longitudinal tape around；The winding structure of even level insulation is: whole horizontal face of insulating paper around；Often around Two-layer insulation carries out a vacuum paint dipping to high frequency high voltage transformer；On last secondary windings 3 after coiling completes, coiling is exhausted Edge layer 4, during insulating barrier 4 coiling, the insulation winding structure of odd-level is: strip insulation band longitudinal tape around；Even level insulation around Structure processed is: whole horizontal face of insulating paper around；Often insulate around two-layer and high frequency high voltage transformer is carried out a vacuum paint dipping；Will be secondary Insulating barrier 4 coiling on level winding 3 carries out vacuum paint dipping process to high frequency high voltage transformer after completing.

After Electric Field Distribution curve and the above-mentioned segmentation of the transformer secondary output winding interlayer contrasting unsegmented layer winding around The Electric Field Distribution curve of the secondary windings interlayer of the high frequency high voltage transformer of system, as shown in Figures 2 and 3, uses unsegmented point The electric field ratio of the transformer secondary output winding interlayer of layer winding uses the transformer secondary output winding interlayer electric field of point four sections of windings Intensity is big, it was demonstrated that the stagewise winding method of high frequency high voltage transformer that the present invention proposes can be effectively reduced primary and secondary around The insulation index of the interlayer of group.

Claims (10)

1. a stagewise high-power high-frequency high-voltage transformator, it is characterised in that: include magnetic core (1), the outer wrap of magnetic core (1) There is insulation framework, described insulation framework is wound with armature winding (2) and secondary windings (3), armature winding (2) and secondary successively Insulating barrier (4) it is wound with between winding (3).

A kind of stagewise high-power high-frequency high-voltage transformator the most according to claim 1, it is characterised in that: described insulation bone Frame includes completely identical in structure skeleton Part I and skeleton Part II, described skeleton Part I and skeleton Part II Structure be: include sleeve a (5), sleeve b (6) and the sleeve c (7) of the most coaxial socket, one end of sleeve a (5) End face is concordant with one end end face of one end end face of sleeve b (6), sleeve c (7) respectively, and the other end end face of sleeve a (5) is respectively Concordant with the other end end face of the other end end face of sleeve b (6), sleeve c (7), one end end face of sleeve c (7) and sleeve b (6) One end end face between be provided with baffle plate, described baffle plate simultaneously with this end end face of sleeve c (7), sleeve b6 this end end face is concordant sets Put, and the space between this end end face of sleeve c (7) and this end end face of sleeve b (6) is blocked, sleeve b (6) and set Be provided with at least two segmentation bar a (8) between cylinder a (5), each segmentation bar a (8) be evenly distributed on sleeve b (6) and sleeve a (5) it Between, the outer wall of sleeve c (7) is provided with at least two segmentation bar b (9), and segmentation bar a (8) is identical with segmentation bar b (9) quantity, each Segmentation bar a (8) is located along the same line with segmentation bar b (9) accordingly, and each segmentation bar a (8) and each segmentation bar b (9) all with Sleeve a (5), sleeve b (6) and the central axis upright of sleeve c (7)；

Described magnetic core (1) is arranged between sleeve b (6) and sleeve c (7), described skeleton Part I and skeleton Part II pair Claiming zoarium to be wrapped up by magnetic core (1), one end end face of magnetic core (1) is covered by the described baffle plate on skeleton Part I, magnetic core 1 Other end end face covered by the described baffle plate on skeleton Part II, described insulation framework is as magnetic core (1) and armature winding (2) insulation between.

A kind of stagewise high-power high-frequency high-voltage transformator the most according to claim 2, it is characterised in that: described primary around Group (2) and secondary windings (3) all at least 1 layer, between adjacent two layers armature winding (2), between adjacent two layers secondary windings (3) It is equipped with insulating barrier (4).

4. the segmentation winding method of a stagewise high frequency high voltage transformer, it is characterised in that: use a kind of stagewise high-power High frequency high voltage transformer, including magnetic core (1), the outer wrap of magnetic core (1) has insulation framework, coiling successively in described insulation framework There are armature winding (2) and secondary windings (3), between armature winding (2) and secondary windings (3), are wound with insulating barrier (4)；

Described insulation framework includes completely identical in structure skeleton Part I and skeleton Part II, described skeleton Part I With the structure of skeleton Part II it is: include sleeve a (5), sleeve b (6) and the sleeve c (7) of the most coaxial socket, One end end face of sleeve a (5) one end end face of sleeve b (6) respectively, sleeve c (7) one end end face concordant, sleeve a's (5) is another One end end face is concordant with the other end end face of the other end end face of sleeve b (6), sleeve c (7) respectively, one end end of sleeve c (7) Be provided with baffle plate between one end end face of face and sleeve b (6), described baffle plate simultaneously with this end end face of sleeve c (7), sleeve b6 should The end concordant setting of end face, and the space between this end end face of sleeve c (7) and this end end face of sleeve b (6) is blocked, Be provided with at least two segmentation bar a (8) between sleeve b (6) and sleeve a (5), each segmentation bar a (8) be evenly distributed on sleeve b (6) and Between sleeve a (5), the outer wall of sleeve c (7) is provided with at least two segmentation bar b (9), segmentation bar a (8) and segmentation bar b (9) number Measuring identical, each segmentation bar a (8) is located along the same line with segmentation bar b (9) accordingly, and each segmentation bar a (8) and each point Section bar b (9) all with sleeve a (5), sleeve b (6) and the central axis upright of sleeve c (7)；

Described magnetic core (1) is arranged between sleeve b (6) and sleeve c (7), described skeleton Part I and skeleton Part II pair Claiming zoarium to be wrapped up by magnetic core (1), one end end face of magnetic core (1) is covered by the described baffle plate on skeleton Part I, magnetic core 1 Other end end face covered by the described baffle plate on skeleton Part II, described insulation framework is as magnetic core (1) and armature winding (2) insulation between；

Described armature winding (2) and secondary windings (3) all at least 1 layer, between adjacent two layers armature winding (2), adjacent two layers Insulating barrier (4) it is equipped with between secondary windings (3)；

Specifically include following steps:

Step 1, determines the coiling parameter of high frequency high voltage transformer；

Step 2, calculates the hierarchy number m of armature winding (2) respectively_pHierarchy number m with secondary windings (3)_s；

Step 3, calculates the segments n, segments n of high frequency high voltage transformer equal to segmentation bar a (8) and the number of segmentation bar b (9) Amount；

Step 4, recalculates armature winding (2) and the layering of secondary windings (3) respectively according to the result of calculation of step 3 gained Number, and it is designated as m respectively_p' and m_s', respectively by m_p' and m_p、m_sWith m_s' compare, take smaller value as armature winding (2) and time The hierarchy number of level winding (3)；

Step 5, arranges segmentation bar a (8) and the segmentation bar of respective numbers in insulation framework according to the result of calculation of step 3 gained b(9)；

Particularly as follows: arrange segmentation bar a (8) identical with segments between sleeve a (5) and sleeve b (6)；Sleeve c's (7) Segmentation bar b (9) that outside setting is identical with segments；

Step 6, according to the armature winding of the less armature winding hierarchy number coiling high frequency high voltage transformer taken in step 4 (2) segmentation bar a (8) and segmentation bar b (9) that, arrange according to step 5 during coiling are that boundary carries out segmentation coiling；

Step 7, according to the secondary windings of the less secondary windings hierarchy number coiling high frequency high voltage transformer taken in step 4 (3) segmentation bar a (8) and segmentation bar b (9) that, arrange according to step 5 during coiling are that boundary carries out segmentation coiling.

A kind of stagewise high-power high-frequency high-voltage transformator the most according to claim 4, it is characterised in that: in step 1 really Fixed parameter particularly as follows:

High frequency high voltage transformer magnetic core (1) material, armature winding (2) number of turn, number of share of stock and wire gauge；Secondary windings (3) number of turn, Number of share of stock and wire gauge.

A kind of stagewise high-power high-frequency high-voltage transformator the most according to claim 4, it is characterised in that: the tool of step 2 Body process is:

Known: armature winding (2) voltage U_p, the maximum pressure U of armature winding (2) interlayer₁；

Secondary windings (3) voltage U_s, the maximum pressure U of secondary windings (3) interlayer₂；

The hierarchy number m of armature winding (2) is calculated according to equation below (1)_p:

$m_p=\frac{U_p}{U_1}---\left(1\right);$

Wherein, as 0 ＜ m_pWhen≤1, m_p=1；

As a ＜ m_pDuring≤b, wherein b ＞ a >=1, b-a=2, and a, b are odd number, now,

As a ＜ m_pDuring≤a+2 × 15%, m_p=a；

As a+2 × 15% ＜ m_pDuring≤b, m_p=b；

The hierarchy number m of secondary windings (3) is calculated according to equation below (2)_s:

$m_s=\frac{U_s}{U_2}---\left(2\right);$

As 0 ＜ m_sWhen≤1, m_s=1；

Wherein,

As c ＜ m_sDuring≤d, wherein d ＞ c >=1, d-c=2, and c, d are odd number, now,

As c ＜ m_sDuring≤c+2 × 15%, m_s=c；

As c+2 × 15% ＜ m_sDuring≤d, m_s=d.

A kind of stagewise high-power high-frequency high-voltage transformator the most according to claim 4, it is characterised in that: the tool of step 3 Body process is:

Segments n according to equation below (3) calculating high frequency high voltage transformer:

N=-15.38lgk₁-18.77 (3)；

Wherein, k₁=min{C_pn,C_sn,C_psn, k₁For target proportion coefficient；

C_pnParasitic capacitance proportionality coefficient for armature winding (2)；

C_snParasitic capacitance proportionality coefficient for secondary windings (3)；

C_psnFor the parasitic capacitance proportionality coefficient between armature winding (2) and secondary windings (3)；

C_pn、C_sn、C_psnSpan all exist

A kind of stagewise high-power high-frequency high-voltage transformator the most according to claim 4, it is characterised in that: described step 4 Detailed process be:

The number of stories m of armature winding in high frequency high voltage transformer is recalculated according to equation below (4)_p':

m_p'=m_p×k₂(4)；

k₂Segmented compensation coefficient for armature winding；

Wherein,

Work as m_p'≥m_pTime, the hierarchy number of armature winding is m_pOtherwise, the hierarchy number of armature winding is m_p′；

The number of stories m of secondary windings in high frequency high voltage transformer is recalculated according to equation below (5)_s':

m_s'=m_s×k₃(5)；

Wherein, k₃Segmented compensation coefficient for secondary windings；

Work as m_s'≥m_sTime, the hierarchy number of secondary windings is m_sOtherwise, the hierarchy number of secondary windings is m_s′。

A kind of stagewise high-power high-frequency high-voltage transformator the most according to claim 4, it is characterised in that: described step 6 Detailed process be:

Step 6.1, armature winding (2) hierarchy number determined according to step 4, coiling ground floor armature winding in insulation framework, Concrete winding process is:

To be positioned at collinear segmentation bar a (8) and segmentation bar b (9) as a boundary group, described in adjacent two Magnetic core (1) is uniformly divided into n section by boundary group, take wherein one section as the 1st section, start coiling armature winding (2), the 1st section of primary After winding technique completes, from the outside of sleeve c (7), inside to sleeve a (5) strides across boundary group and carries out the coiling of the 2nd section, according to Hop count is remained to the cross-line mode coiling successively during the 2nd section of transition, until divided n section coiling being completed from the 1st section；

Step 6.2 is straight according to the armature winding (2) of the winding process coiling residue number of plies of ground floor armature winding in step 6.1 To around complete；During coiling armature winding (2), coiling insulating barrier (4) between adjacent two layers armature winding (2)；

Step 6.3, the upper coiling insulating barrier (4) of the armature winding (2) after step 6.2 coiling completes；

Step 6.4, carries out vacuum paint dipping process to high frequency high voltage transformer.

A kind of stagewise high-power high-frequency high-voltage transformator the most according to claim 9, it is characterised in that: the tool of step 7 Body process is:

Step 7.1, secondary windings (3) hierarchy number determined according to step 4, on the insulating barrier (4) of armature winding (2) coiling around Ground floor secondary windings (3) processed, concrete winding process is:

To be positioned at collinear segmentation bar a (8) and segmentation bar b (9) as a boundary group, described in adjacent two Magnetic core (1) is uniformly divided into n section by boundary group, takes a section relative with armature winding (2) inlet wire as the 1st section, starts coiling time Level winding (3), after the 1st section of secondary windings coiling completes, from the outside of sleeve c (7), the inside to sleeve a (5) strides across boundary group Carry out the coiling of the 2nd section, remain hop count according to from the 1st section to the cross-line mode coiling successively during the 2nd section of transition, until will be divided N section coiling complete；

Step 7.2, according in step 7.1 the 1st hierarchical level winding winding process coiling residue the number of plies secondary windings until around Till complete；During coiling secondary windings (3), coiling insulating barrier (4) between adjacent two layers secondary windings；

Step 7.3, the upper coiling insulating barrier (4) of the secondary windings (3) after step 7.2 coiling completes；

Step 7.4, carries out vacuum paint dipping process to high frequency high voltage transformer.