CN104766707A - Winding structure of single rectifier transformer - Google Patents
Winding structure of single rectifier transformer Download PDFInfo
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- CN104766707A CN104766707A CN201510141715.3A CN201510141715A CN104766707A CN 104766707 A CN104766707 A CN 104766707A CN 201510141715 A CN201510141715 A CN 201510141715A CN 104766707 A CN104766707 A CN 104766707A
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Abstract
The invention provides a winding structure of a single rectifier transformer. The winding structure is that net side windings are connected in parallel and provided with two phase-shift angles, and an axial double split or four-split manner is performed; each net side winding is uniform in capacity distribution; the valve side is provided with four windings which can respectively generate two groups of magnetic flux at different phases; four windings at the valve side are in a form of axial four-split or the combination of axial double-split and radial three-split; an iron core compensating magnetic spoke for compensating unbalanced magnetic flux caused by different phase-shift angles at the top and bottom of the net side is arranged between the upper part and the lower part of an iron core. According to the improved winding structure, the net side phase shift of single 24-pulse transformer is effectively achieved; the winding structure has the characteristics of being simple and reasonable in structure, reliable in performance, small in cost, small in space used, balanced in rectifier current, small in phase-shift angle deviation, small in unbalance degree of no-load voltage of the net side winding, and balanced in commutating reactance.
Description
Technical field
The present invention relates to a kind of winding construction of separate unit rectifier transformer.
Background technology
Separate unit rectifier transformer and separate unit rectifier form a set of 12 pulse wave rectifier units, and two cover 12 pulse wave rectifier units parallel runnings after coupling form equivalent 24 pulse wave rectifiers.This is the rectifier system that current track communication project generally adopts, and which not only floor space is large, and cost is also expensive.
Chinese patent literature number is that CN102201749A discloses a kind of Three-phase 48-pulse rectifier transformer on September 28th, 2011, and single transformer is 24 pulse waves, and the phase shift system of employing is the equal phase shift of displaceable valve phase or net side valve side.Because the valve side number of turn is few, voltage is low, and Phase shift winding voltage and main winding voltage usually all can have with theoretical value and departs from more greatly, cause synthesis phase shifting angle and regulation to shift to angular displacement comparatively greatly, and four valve side floating voltage unbalance factors is also high.By requirement in GB1094.11 and JB/T 10639-2007, need to meet following 3 conditions then concept feasible simultaneously:
1) each valve side winding floating voltage and rated voltage phase ratio error are in ± 0.5% scope;
2) between four valve side windings, floating voltage degree of unbalance is not more than 0.3%;
3) phase shift angular error is within the scope of ± 0.225 °.
In order to meet this 3 conditions, only have and obtain very high by the valve side number of turn, therefore transformer capacity is limited to, and the highlyest can only accomplish separate unit 1250kVA, can not meet the requirement that subway rectification becomes Conventional mass.Therefore, further improvement is necessary.
Summary of the invention
Object of the present invention aims to provide a kind of simple and reasonable, dependable performance, with low cost, take up room little, rectified current balances, and phase shift angular deviation is little, and valve side winding floating voltage degree of unbalance is little, the winding construction of the separate unit rectifier transformer of commutation reactive balance, to overcome weak point of the prior art.
The winding construction of a kind of separate unit rectifier transformer designed by this object, is characterized in that: adopt net sidesway phase, and source side winding is in parallel and have two phase shift angles; Valve side has four windings and produces the magnetic flux of two groups of outs of phase respectively, makes four sleeving valve side winding output voltage phase places differ 15 ° or 7.5 ° between the two up and down; Described separate unit docks formation 24 pulse wave rectifier with rectifier, two dock formation 48 pulse wave rectifier with rectifier.
Described net side adopts axial direction double bundle or quadripartion, wherein each source side winding capacity uniform distribution; The mode that four, valve side winding adopts axial direction double bundle to combine with radial three apportions or axial quadripartion.
Described net side adopts extend-triangle to connect, and phase shift+7.5 ° or-7.5 ° ,+3.75 ° or+11.25 ° ,-3.75 ° or-11.25 ° are distinguished in upper and lower part; Four, valve side winding is linked to be two corner connections respectively and two stars connect.
The iron core causing magnetic flux imbalance to compensate to the upper and lower different phase shift angle in net side that is provided with between two parts up and down of the iron core of described rectifier transformer compensates magnetic and divides yoke.
The present invention is by the improvement of said structure, adopt new winding coupling, arrangement method and new core construction, separate unit docks formation 24 pulse wave rectifier with rectifier, two dock formation 48 pulse wave rectifier with rectifier, because voltage on line side is high, the number of turn is many, Phase shift winding and main winding voltage and theoretical calculation degree high, thus it is less to make synthesis phase shifting angle and regulation shift to angular displacement, and valve side umber of turn has more more options, the suitable number of turn can be chosen, make floating voltage degree of unbalance less, effectively realize separate unit 24 pulse wave transformer net sidesway phase.The features such as it has simple and reasonable, dependable performance, with low cost, takes up room little, and rectified current balances, and phase shift angular deviation is little, and valve side winding floating voltage degree of unbalance is little, commutation reactive balance.
Its performance parameter meets:
1) each valve side winding floating voltage and rated voltage phase ratio error are in ± 0.5% scope;
2) between four valve side windings, floating voltage degree of unbalance is not more than 0.3%;
3) phase shift angular error is within the scope of ± 0.225 °.
Accompanying drawing explanation
Fig. 1 is the present invention first winding construction schematic diagram.
Fig. 2 is the present invention second winding construction schematic diagram.
Fig. 3 is tertiary winding structural representation of the present invention.
Fig. 4 is that the present invention connects group and vector structure schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
See Fig. 1-Fig. 4, the winding construction of this separate unit rectifier transformer, adopts net sidesway phase, and source side winding is in parallel and have two phase shift angles; Valve side has four windings and produces the magnetic flux of two groups of outs of phase respectively, makes four sleeving valve side winding output voltages differ 15 ° or 7.5 ° between the two up and down; Described separate unit docks formation 24 pulse wave rectifier with rectifier, two dock formation 48 pulse wave rectifier with rectifier.
Specifically, the winding construction of this separate unit rectifier transformer: source side winding is in parallel and have two phase shift angles, valve side has four windings and produces the magnetic flux of two groups of outs of phase respectively.
Net side adopts axial direction double bundle or quadripartion, wherein each source side winding capacity uniform distribution; The mode that four, valve side winding adopts axial direction double bundle to combine with radial tripartition or axial quadripartion.
Net side adopts extend-triangle to connect, and phase shift+7.5 ° or-7.5 ° ,+3.75 ° or+11.25 ° ,-3.75 ° or-11.25 ° are distinguished in upper and lower part; Four, valve side winding is linked to be two corner connections respectively and two stars connect.
More particularly, net side adopts extend-triangle to connect, upper and lower two parts distinguish phase shifts+7.5 ° or-7.5 °, four, valve side winding is linked to be 2 corner connections respectively and 2 stars connect, make four sleeving valve side winding output voltages differ 15 ° between any two up and down, dock formation 24 pulse wave rectifier with rectifier.As adopted the form of one group, two transformers, wherein net upper and lower two the part difference phase shifts+3.75 ° in side or+11.25 ° for one, another nets upper and lower two the part difference phase shifts-3.75 ° in side or-11.25 °, 8 sleeving valve side winding output voltages of such correspondence differ 7.5 ° between any two, thus can form 48 pulse wave rectifiers.
Because voltage on line side is high, the number of turn is many, Phase shift winding and main winding voltage and theoretical calculation degree high, thus it is less to make synthesis phase shifting angle and regulation shift to angular displacement, and valve side umber of turn has more more options, can choose the suitable number of turn, make floating voltage degree of unbalance less.
More particularly, winding is placed with following 3 kinds of modes:
1) net side adopts axial direction double bundle, and valve side adopts by a winding width to being divided into equal two sections, then another winding is placed in two sections of centres, then the structure of upper and lower symmetrical axial split.As shown in Figure 1.
Wherein, source side winding H1, H2 and four sleeving valve sides export winding L 1, L2, L3, L4, and wherein L1, L3 are originally as radial direction division, and L1 and L3, L2 and L4 are axial split.
2) net side adopts axial direction double bundle, and valve side adopts axially quadrifid structure.As shown in Figure 2.
3) net side adopts axial quadripartion, and valve side adopts axially quadrifid structure.As shown in Figure 3.
Owing to netting upper and lower two part difference phase shifts+7.5 ° or-7.5 ° of pressing two division, + 3.75 ° or+11.25 °,-3.75 ° or-11.25 ° can cause upper and lower flux vectors uneven, therefore need increase the magnetic that compensates unshakable in one's determination and divide yoke to compensate phase shift angles different up and down between the upper and lower two parts of iron core.
In said structure, this separate unit rectifier transformer the iron core causing magnetic flux imbalance to compensate to net side upper and lower different phase shift angle that is provided with between two parts up and down of iron core compensate magnetic and divide yoke.
Connection group shown in Fig. 4, source side winding H1, H2 distinguish phase shift+7.5 ° and-7.5 °, and mutual phasing 15 ° between source side winding, the winding L 1 of valve side axial split and the phase angle difference between L3, L2 and L4 are also 15 degree.The parameter index of what following table 1-table 6 provided is various valve sides winding combination.
Table 1
Table 2
Table 3
Table 4
Table 5
Table 6
When net sidesway be respectively mutually+7.5 ° with-7.5 ° ,+3.75 ° with+11.25 ° or-3.75 ° with-11.25 ° time, upper and lower two parts magnetic flux is uneven, need increase magnetic shunt to balance upper and lower magnetic flux.
The winding of the separate unit rectifier transformer of this structure, its performance parameter meets:
1) each valve side winding floating voltage and rated voltage phase ratio error are in ± 0.5% scope;
2) between four valve side windings, floating voltage degree of unbalance is not more than 0.3%;
3) phase shift angular error is within the scope of ± 0.225 °.
Above-mentioned is preferred version of the present invention, and those of ordinary skill in the art, to its simple modification or transformation, all drop within protection scope of the present invention.
Claims (4)
1. a winding construction for separate unit rectifier transformer, is characterized in that: adopt net sidesway phase, and source side winding is in parallel and have two phase shift angles; Valve side has four windings and produces the magnetic flux of two groups of outs of phase respectively, makes four sleeving valve side winding output voltage phase places differ 15 ° or 7.5 ° between the two up and down; Described separate unit docks formation 24 pulse wave rectifier with rectifier, two dock formation 48 pulse wave rectifier with rectifier.
2. the winding construction of separate unit rectifier transformer according to claim 1, is characterized in that described net side adopts axial direction double bundle or quadripartion, wherein each source side winding capacity uniform distribution; The mode that four, valve side winding adopts axial direction double bundle to combine with radial three apportions or axial quadripartion.
3. the winding construction of separate unit rectifier transformer according to claim 2, is characterized in that described net side adopts extend-triangle to connect, upper and lower part phase shift+7.5 ° or-7.5 ° ,+3.75 ° or+11.25 ° ,-3.75 ° or-11.25 ° respectively; Four, valve side winding is linked to be two corner connections respectively and two stars connect.
4. the winding construction of separate unit rectifier transformer according to claim 3, is characterized in that the iron core causing magnetic flux imbalance to compensate to the upper and lower different phase shift angle in net side that is provided with between two parts up and down of the iron core of described rectifier transformer compensates magnetic and divides yoke.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510141715.3A CN104766707A (en) | 2015-03-27 | 2015-03-27 | Winding structure of single rectifier transformer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510141715.3A CN104766707A (en) | 2015-03-27 | 2015-03-27 | Winding structure of single rectifier transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107257200A (en) * | 2017-07-25 | 2017-10-17 | 顺特电气设备有限公司 | The many pulse wave resin-cast phase-shifting commutation transformation systems of Large Copacity |
| CN109545527A (en) * | 2018-11-30 | 2019-03-29 | 合肥华威自动化有限公司 | A kind of stepless capacity regulation division phase-shifting transformer |
-
2015
- 2015-03-27 CN CN201510141715.3A patent/CN104766707A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107257200A (en) * | 2017-07-25 | 2017-10-17 | 顺特电气设备有限公司 | The many pulse wave resin-cast phase-shifting commutation transformation systems of Large Copacity |
| CN109545527A (en) * | 2018-11-30 | 2019-03-29 | 合肥华威自动化有限公司 | A kind of stepless capacity regulation division phase-shifting transformer |
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Application publication date: 20150708 |
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