CN202168000U - Three-phase 48 pulse wave rectifier transformer - Google Patents
Three-phase 48 pulse wave rectifier transformer Download PDFInfo
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- CN202168000U CN202168000U CN2011202219636U CN201120221963U CN202168000U CN 202168000 U CN202168000 U CN 202168000U CN 2011202219636 U CN2011202219636 U CN 2011202219636U CN 201120221963 U CN201120221963 U CN 201120221963U CN 202168000 U CN202168000 U CN 202168000U
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Abstract
The utility model relates to a field of rectifier transformers and discloses a three-phase 48 pulse wave rectifier transformer. The three-phase 48 pulse-wave rectifier transformer is composed of two 24 pulse-wave rectifier transformers. One 24 pulse-wave rectifier transformer is equipped with two sets of net-side input winding and four sets of valve-side output winding. The utility model aims to realize a parallel 24 pulse-wave rectification of a single rectifier transformer and a 48 pulse-wave rectification of two rectifier transformers through a method of winding, phase-shifting, coupling, and turn number selecting. The utility model solves the technical problem of unbalanced current in the parallel rectifier transformers, thereby improving the loading capacity of a rectifier and reducing harmonic currents generated by the rectifier. On a net side, a 5th, a 7th, an 11th, a 13th, a 17th, a 19th, a 23rd and a 25th harmonic current of the parallel 48 pulse-wave rectifier system composed of the two 24 wave rectifier transformers can be cancelled out mutually.
Description
Technical field
The utility model relates to and alternating current is transformed to galvanic Semiconductor Converting Technology field, especially a kind of rectifier transformer that is used for unsteady flow.
Background technology
In application number was 201010526406.5 patent of invention " three-phase 48 pulse wave rectifier transformers ", three-phase 48 pulse wave rectifier transformers were made up of two three-phases, 24 pulse wave rectifier transformers.Three-phase 24 pulse wave rectifier transformers comprise two cover net side input windings and quadruplet valve side output winding; Two cover net side input winding parallel connections and axial split are arranged; Two sleeving valve sides output winding in the quadruplet valve side output winding and the corresponding layout that radially divides of a cover net side input winding; Two sleeving valve sides output winding and another set of net side are imported the also corresponding layout that radially divides of winding in addition; The two sleeving valve sides output winding of corresponding radially division is also arranged for axial split with the valve side output winding of the corresponding radially division of other two covers, and is as depicted in figs. 1 and 2; The principal character of these three-phase 24 pulse wave rectifier transformers is symmetrical each other phase shifts of two sleeving valve sides output winding that corresponding radially division is arranged, phase shifting angle is 7.5 ° each other, or is 15 °, or is 22.5 °.During this three-phase 48 pulse wave rectifier transformers operation, the rectified current of the valve side output winding that corresponding radially division is arranged is serious each other uneven, and the rectified current unbalance factor is greater than 50% sometimes; The unbalanced harm of rectified current mainly contains two: reduce the carrying load ability of commutation system, increase the harmonic current of commutation system to electrical network output; So must eliminate the rectified current unbalance factor, generally require the rectified current unbalance factor as far as possible less than 10%.
The leakage field coupling coefficient that radially divides between the arrangement of valves side output winding is big, and under the condition that each winding three-phase short-circuit impedance equates, each phase leakage inductance of each winding is relevant with winding conducting working condition with the phase shifting angle between the winding; In the phase shifting angle scope between 0 ° to 30 °, radially division arranges that each phase leakage inductance of two windings is unequal, adds two windings each ON time order and at interval different, causes the corresponding rectified current of two windings uneven; Only when 30 ° of phase shifting angles, each phase leakage inductance of two windings equates that the time sequencing that respectively is conducted is also identical with at interval, and radially division arranges that the corresponding rectified current of two windings is that balance equates.The two sleeving valve sides output winding that corresponding radially division is arranged in former patent phase shifting angle each other is 7.5 °, or is 15 °, or is 22.5 °, is to cause the uneven main cause that equates of rectified current.
Leakage field coupling coefficient between the axial split valve side output winding is little, between the axial split valve side output winding phase mutual interference little, each phase leakage inductance of each valve side output winding and rectified current are related little with the phase shifting angle that axial split valve side is exported between the winding; During different axial split phase shifting angle, each the phase leakage inductance and the rectified current of the valve side of axial split output winding are equal basically, and the rectified current unbalance factor can be less than 10%.
To three-phase 48 pulse wave rectifier transformers, the rectified current of eliminating between each winding is uneven, just can guarantee the carrying load ability of commutation system, reduces the harmonic current of commutation system to electrical network output.
The utility model content
The technical problem that the utility model will solve is: propose a kind ofly through new winding phase shift, connect and the number of turn choosing method three-phase 48 pulse wave rectifier transformers of the balance of realization rectified current.
The technical scheme that the utility model adopted is: a kind of three-phase 48 pulse wave rectifier transformers; 24 pulse wave rectifier transformers by the phase shift of two deck valve sides output winding are formed; Described separate unit 24 pulse wave rectifier transformers have two cover net side input windings and quadruplet valve side output winding; Two cover net side input winding parallel connections and axial split are arranged; Two sleeving valve sides output winding in the quadruplet valve side output winding and the corresponding layout that radially divides of a cover net side input winding; Two sleeving valve sides output winding and another set of net side are imported the also corresponding layout that radially divides of winding in addition, and the corresponding valve side output winding that radially divides with other two covers of the two sleeving valve sides output winding of corresponding radially division also is that axial split is arranged; The two sleeving valve sides output winding that described correspondence radially divides layout phase shifting angle each other is 30 °; The valve side winding that the corresponding radially division of other two covers is arranged phase shifting angle each other also is 30 °; Axial split arranges that the phase shifting angle between the winding is 15 ° or 7.5 °, and quadruplet valve side output umber of turn no-load voltage ratio (the equivalent number of turn) differs less than 0.5%; The net side input winding phase shift each other of described two 24 pulse wave rectifier transformers; Make evenly to differ 7.5 ° between the voltage of eight sleeving valve sides output winding of two 24 pulse wave rectifier transformers that the eight sleeving valve sides output winding of two 24 pulse wave rectifier transformers is corresponding with rectifier to be connected to form even 48 pulse wave rectifiers.
When the phase shifting angle between the axial split valve side output winding was 15 °, the quadruplet valve side output winding of separate unit 24 pulse wave rectifier transformers phase shifting angle each other is respectively: 15 °, 15 °, 15 ° and 15 ° was evenly to equate; In 7.5 ° or 22.5 ° of the phase shifts each other of the net side winding of two rectifier transformers, make between the voltage of eight sleeving valve sides output winding of two rectifier transformers and evenly differ 7.5 °.
Correspondence radially divides arranges that two sleeving valve sides output winding is phase shift and connects, phase shift respectively, and two sleeving valve sides output winding phase angle difference is 30 ° after the phase shift; The output of the two sleeving valve sides in addition winding that corresponding radially division is arranged is phase shift and connects; Phase shift respectively; Two sleeving valve sides output winding phase angle difference is 30 ° after the phase shift; Be specially: correspondence radially divides arranges that two sleeving valve sides output winding is respectively delta connection and star connection, Y connection, and phase angle difference is 30 ° each other; The output of the two sleeving valve sides in addition winding that corresponding radially division is arranged is extend-triangle and connects, respectively phase shift+15 ° with-15 °, phase angle difference is 30 ° each other.
When the phase shifting angle between the axial split valve side output winding was 7.5 °, quadruplet valve side output winding phase shifting angle each other is respectively: 22.5 °, 7.5 °, 22.5 ° and 7.5 °, right and wrong evenly equated; In 15 ° of the phase shifts each other of the net side winding of two rectifier transformers, make between the voltage of eight sleeving valve sides output winding of two rectifier transformers and evenly differ 7.5 °.
Correspondence radially divides arranges that two sleeving valve sides output winding is extend-triangle and connects, respectively phase shift+11.25 ° with-18.75 °; The output of the two sleeving valve sides in addition winding that corresponding radially division is arranged is extend-triangle and connects; Respectively phase shift-11.25 ° with+18.75 °; Be specially: correspondence radially divides arranges that two sleeving valve sides output winding is extend-triangle and connects, respectively phase shift+3.75 ° with-26.25 °; The output of the two sleeving valve sides in addition winding that corresponding radially division is arranged is extend-triangle and connects, respectively phase shift-3.75 ° with+26.25 °.
The beneficial effect of the utility model is: the rectified current balance that realizes three-phase 48 pulse wave rectifier rectifier transformers equates, has improved the defective of former method, can improve the rectifier carrying load ability, reduces the harmonic current that rectifier produces; The parallel connection 48 pulse wave rectifier systems that two rectifier transformers are formed, 5 times of net side, 7 times, 11 times, 13 times, 17 times, 19 times, 23 times and 25 subharmonic currents can be cancelled out each other, and have improved the quality of electrical network.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is that the quadruplet valve side output winding of prior art 24 pulse wave rectifier transformers is arranged;
Fig. 2 is that the another kind of quadruplet valve side output winding of prior art 24 pulse wave rectifier transformers is arranged;
Fig. 3 is a kind of even phase shift connecting method of the valve side output winding of the utility model;
Fig. 4 is another even phase shift connecting method of the valve side output winding of the utility model;
Fig. 5 is a kind of non-homogeneous phase shift connecting method of the valve side output winding of the utility model;
Fig. 6 is another non-homogeneous phase shift connecting method of the valve side output winding of the utility model;
Fig. 7 is a kind of winding coupling method of the three-phase 48 pulse wave rectifier transformers of the utility model;
Fig. 8 is another winding coupling method of the three-phase 48 pulse wave rectifier transformers of the utility model.
Embodiment
Combine accompanying drawing and preferred embodiment that the utility model is done further detailed explanation now.These accompanying drawings are the sketch map of simplification, the basic structure of the utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
A Fig. 1 or a transformer shown in Figure 2, the axial split net side input winding H and the quadruplet valve side that contain parallel connection are exported winding (be illustrated as mutually, show unshakable in one's determination), and every sleeving valve side output winding comprises main winding L and phase shift winding S; Quadruplet valve side output winding is respectively: L1S1, L2S2, L3S3 and L4S4.L1S1 radially divides layout mutually each other with L2S2; L3S3 radially divides layout mutually each other with L4S4; L1S1 and L2S2 and L3S3 and L4S4 arrange for axial split each other.
Fig. 3 of the utility model or phase shift connecting method and phase shift angle shown in Figure 4; All realize radially dividing 30 ° of arrangement of valves side output winding phase shift angles each other; Be that phase shifting angle between L1S1 and the L2S2 is 30 °, the phase shifting angle between L3S3 and the L4S4 is 30 °.Selecting radially to divide 30 ° of arrangement of valves side output winding phase shift angles each other, is that the time sequencing that respectively is conducted is also identical with at interval because each phase leakage inductance of two windings equates at this moment, can realize radially dividing and arrange that the corresponding rectified current balance of winding is equal.
Adopt Fig. 3 or phase shift connecting method and phase shift angle shown in Figure 4, winding (L1S1 and L2S2) and (L3S3 and the L4S4) that also makes axial split 15 ° of phase shifts each other; At this moment; Phase angle difference between L1S1 and the L3S3 is 15 °; Phase angle difference between L3S3 and the L2S2 is 15 °, and the phase angle difference between L2S2 and the L4S4 is 15 °, and the phase angle difference between L4S4 and the L1S1 is 45 °, and (60 ° are rectification equivalence cycle period; 45 ° of phase angles and 15 ° of phase angle equivalences), phase angle difference is evenly to equate between the quadruplet valve side winding.Following table provides the parameters such as the number of turn and phase shifting angle of a kind of quadruplet valve side winding of corresponding diagram 3, and quadruplet winding equivalence number of turn deviation is less than 0.03%, in the table among phase shifting angle and the figure regulation phase shifting angle also have certain deviation.
| The winding code name | The main winding number of turn | The phase shift number of turn | The equivalence number of turn | Connecting method | Phase |
| L1S1 | |||||
| 30 | 6 | 39.345 | Just prolonging the limit triangle | +7.59° | |
| L2S2 | 9 | 17 | 39.357 | The anti-limit triangle that prolongs | -22.52° |
| |
30 | 6 | 39.345 | The anti-limit triangle that prolongs | -7.59° |
| L4S4 | 9 | 17 | 39.357 | Just prolonging the limit triangle | +22.52° |
Fig. 5 or Fig. 6 are non-homogeneous phase shift connecting method of valve side winding and phase shift angle, and the corresponding phase shifting angle that radially divides between the arrangement of valves side winding is 30 ° among the figure, and promptly the phase angle difference between L1S1 and the L2S2 is 30 °, and the phase angle difference between L3S3 and the L4S4 is 30 °; The winding (L1S1 and L2S2) of corresponding axial split and (L3S3 and L4S4) 7.5 ° of phase shifts each other.With Fig. 5 is example; Phase angle difference between L1S1 and the L3S3 is 22.5 °; Phase angle difference between L3S3 and the L2S2 is 7.5 °; Phase angle difference between L2S2 and the L4S4 is 37.5 ° (37.5 ° equivalence 22.5 °), and the phase angle difference between L4S4 and the L1S1 is 7.5 °, and the phase angle difference right and wrong evenly equate between the quadruplet valve side winding.Adopt non-homogeneous equal phase shifting angle between the quadruplet valve side winding, can be main winding and phase shift umber of turn and select more scheme is provided, can form even 48 pulse wave rectifier transformers equally; Following table provides the parameters such as the number of turn and phase shifting angle of a kind of quadruplet valve side winding of corresponding diagram 5, and quadruplet winding equivalence number of turn deviation is less than 0.21%, in the table among phase shifting angle and the figure regulation phase shifting angle also have certain deviation.
| The winding code name | The main winding number of turn | The phase shift number of turn | The equivalence number of turn | Connecting method | Phase shifting angle |
| L1S1 | 17 | 6 | 26.514 | Just prolonging the limit triangle | +11.30° |
| L2S2 | 10 | 10 | 26.458 | The anti-limit triangle that prolongs | -19.10° |
| L3S3 | 17 | 6 | 26.514 | The anti-limit triangle that prolongs | -11.30° |
| L4S4 | 10 | 10 | 26.458 | Just prolonging the limit triangle | +19.10° |
Shown in Figure 7 is the three-phase 48 pulse wave rectifier transformers that the rectifier transformer of the even phase shift of two connecting methods shown in Figure 3 is formed; Two rectifier transformer net side windings adopt and prolong limit triangle phase shift connecting method; Respectively phase shift+3.75 ° with-3.75 °, 7.5 ° of the phase shifts each other of net side winding; Two rectifier transformer eight sleeving valve side windings are evenly at interval 7.5 ° in phase angle each other, i.e. interval 7.5 ° of the single ripple electric angle of 48 pulse wave rectifier voltages.In addition, if 22.5 ° of the phase shifts each other of net side winding, two rectifier transformer eight sleeving valve side windings phase angle each other also are evenly at interval 7.5 °, but in the net side, can better offset 5 times and 7 subharmonic currents that the rectified current imbalance causes.
Shown in Figure 8 is the three-phase 48 pulse wave rectifier transformers that the rectifier transformer of the non-homogeneous phase shift of two connecting methods shown in Figure 5 is formed; Two rectifier transformer net side windings adopt and prolong limit triangle phase shift connecting method; Respectively phase shift+7.5 ° with-7.5 °, 15 ° of the phase shifts each other of net side winding; Two rectifier transformer eight sleeving valve side windings are evenly at interval 7.5 ° in phase angle each other, i.e. interval 7.5 ° of the single ripple electric angle of 48 pulse wave rectifier voltages.
The just embodiment of describing in the above specification of the utility model; The various fleshes and bloods that illustrate not the utility model constitute restriction; Under the those of ordinary skill of technical field after having read specification can to before described embodiment make an amendment or be out of shape, and do not deviate from the essence and the scope of utility model.
Claims (7)
1. three-phase 48 pulse wave rectifier transformers; 24 pulse wave rectifier transformers by the phase shift of two deck valve sides output winding are formed; It is characterized in that: described separate unit 24 pulse wave rectifier transformers have two cover net side input windings and quadruplet valve side output winding; Two cover net side input winding parallel connections and axial split are arranged; Two sleeving valve sides output winding and in the quadruplet valve side output winding overlaps the corresponding layout that radially divides of net side input winding, and two sleeving valve sides output winding and another set of net side are imported the also corresponding layout that radially divides of winding in addition, and the corresponding valve side output winding that radially divides with other two covers of the two sleeving valve sides output winding of corresponding radially division also is that axial split is arranged; The two sleeving valve sides output winding that described correspondence radially divides layout phase shifting angle each other is 30 °; The valve side winding that the corresponding radially division of other two covers is arranged phase shifting angle each other also is 30 °; Axial split arranges that the phase shifting angle between the winding is 15 ° or 7.5 °, and the voltage value of quadruplet valve side output winding differs less than 0.5%; The net side input winding phase shift each other of described two 24 pulse wave rectifier transformers; Make evenly to differ 7.5 ° between the voltage of 8 sleeving valve sides output winding of two 24 pulse wave rectifier transformers that the 8 sleeving valve sides output winding of two 24 pulse wave rectifier transformers is corresponding with rectifier to be connected to form even 48 pulse wave rectifiers.
2. a kind of three-phase 48 pulse wave rectifier transformers as claimed in claim 1; It is characterized in that: described separate unit 24 pulse wave rectifier transformers; Axial split arranges when the phase shifting angle between the winding is 15 ° that quadruplet valve side output winding phase shifting angle each other is respectively 15 °, 15 °; 15 ° and 15 ° is evenly to equate; 7.5 ° or 22.5 ° of the phase shifts each other of the net side of described two 24 pulse wave rectifier transformers input winding.
3. a kind of three-phase 48 pulse wave rectifier transformers as claimed in claim 2 is characterized in that: correspondence radially divides arranges that two sleeving valve sides output winding is phase shift and connects, phase shift respectively, and two sleeving valve sides output winding phase angle difference is 30 ° after the phase shift; The output of the two sleeving valve sides in addition winding that corresponding radially division is arranged is phase shift and connects, phase shift respectively, and two sleeving valve sides output winding phase angle difference is 30 ° after the phase shift.
4. a kind of three-phase 48 pulse wave rectifier transformers as claimed in claim 2 is characterized in that: correspondence radially divides arranges that two sleeving valve sides output winding is respectively delta connection and star connection, Y connection, and phase angle difference is 30 ° each other; The output of the two sleeving valve sides in addition winding that corresponding radially division is arranged is extend-triangle and connects, respectively phase shift+15 ° with-15 °, phase angle difference is 30 ° each other.
5. a kind of three-phase 48 pulse wave rectifier transformers as claimed in claim 1; It is characterized in that: described separate unit 24 pulse wave rectifier transformers; Axial split is arranged when the phase shifting angle between the winding is 7.5 °; Quadruplet valve side output winding phase shifting angle each other is respectively 22.5 °, 7.5 °, 22.5 ° and 7.5 °, and right and wrong evenly equate; 15 ° of the phase shifts each other of the net side of described two 24 pulse wave rectifier transformers input winding.
6. a kind of three-phase 48 pulse wave rectifier transformers as claimed in claim 5 is characterized in that: correspondence radially divides arranges that two sleeving valve sides output winding is extend-triangle and connects, respectively phase shift+11.25 ° with-18.75 °; The output of the two sleeving valve sides in addition winding that corresponding radially division is arranged is extend-triangle and connects, respectively phase shift-11.25 ° with+18.75 °.
7. a kind of three-phase 48 pulse wave rectifier transformers as claimed in claim 5 is characterized in that: correspondence radially divides arranges that two sleeving valve sides output winding is extend-triangle and connects, respectively phase shift+3.75 ° with-26.25 °; The output of the two sleeving valve sides in addition winding that corresponding radially division is arranged is extend-triangle and connects, respectively phase shift-3.75 ° with+26.25 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202219636U CN202168000U (en) | 2011-06-28 | 2011-06-28 | Three-phase 48 pulse wave rectifier transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202219636U CN202168000U (en) | 2011-06-28 | 2011-06-28 | Three-phase 48 pulse wave rectifier transformer |
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| CN202168000U true CN202168000U (en) | 2012-03-14 |
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| CN2011202219636U Expired - Lifetime CN202168000U (en) | 2011-06-28 | 2011-06-28 | Three-phase 48 pulse wave rectifier transformer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102201749A (en) * | 2011-06-28 | 2011-09-28 | 江苏华鹏变压器有限公司 | Three-phase 48-pulse rectifying transformer |
| CN102857124A (en) * | 2012-04-09 | 2013-01-02 | 江苏华鹏变压器有限公司 | Method for dephasing and linking three-phase 48-pulsewave rectification transformer |
| CN105655105A (en) * | 2016-03-30 | 2016-06-08 | 常州东芝舒电变压器有限公司 | Winding structure of high-power oil-immersed type high voltage variable frequency transformer |
-
2011
- 2011-06-28 CN CN2011202219636U patent/CN202168000U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012129980A1 (en) * | 2011-03-29 | 2012-10-04 | 江苏华鹏变压器有限公司 | Three-phase 48-pulse rectifier transformer |
| CN102201749A (en) * | 2011-06-28 | 2011-09-28 | 江苏华鹏变压器有限公司 | Three-phase 48-pulse rectifying transformer |
| CN102857124A (en) * | 2012-04-09 | 2013-01-02 | 江苏华鹏变压器有限公司 | Method for dephasing and linking three-phase 48-pulsewave rectification transformer |
| CN105655105A (en) * | 2016-03-30 | 2016-06-08 | 常州东芝舒电变压器有限公司 | Winding structure of high-power oil-immersed type high voltage variable frequency transformer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zeng Qinggan Inventor after: Cao Bin Inventor after: Ma Zhaowei Inventor after: Wang Yingping Inventor before: Zeng Qinggan |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CENG QINGGAN TO: CENG QINGGAN CAO BIN MA ZHAOWEI WANG YINGPING |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120314 |