CN206516457U - A kind of photovoltaic inversion double division boosting dry-type transformers of conjugation-type - Google Patents
A kind of photovoltaic inversion double division boosting dry-type transformers of conjugation-type Download PDFInfo
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- CN206516457U CN206516457U CN201720083374.3U CN201720083374U CN206516457U CN 206516457 U CN206516457 U CN 206516457U CN 201720083374 U CN201720083374 U CN 201720083374U CN 206516457 U CN206516457 U CN 206516457U
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- 238000004804 winding Methods 0.000 claims abstract description 152
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 230000004907 flux Effects 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 2
- 210000002683 foot Anatomy 0.000 description 5
- 230000002411 adverse Effects 0.000 description 4
- 229910000976 Electrical steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 210000004899 c-terminal region Anatomy 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
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Abstract
The utility model provides a kind of photovoltaic inversion double division boosting dry-type transformers of conjugation-type, it is unshakable in one's determination that the transformer includes three-phase three-column conjugation-type, it includes iron yoke and three-phase stem, the iron yoke includes upper yoke, middle yoke and lower yoke, and the upper yoke and lower yoke are separately positioned on the top and bottom of three-phase stem, the middle yoke is arranged on the middle part of three-phase stem, low pressure winding and high pressure winding are wound with per phase stem, the high voltage winding group be split into above and below two high pressure winding portion, the low pressure winding be split into above and below two low pressure winding portions, and the middle yoke is respectively by two high pressure winding portion up and down, and two low pressure winding portions are separated up and down, and high frequency flux paths are provided.The utility model can effectively suppress the grid voltage waveform excessive distortion caused during invertor operation and suppress to inject excessive harmonic current to power network, and generation circulation is avoided that again.
Description
Technical field
The utility model is related to technical field of photovoltaic power generation, and in particular to a kind of double divisions of conjugation-type of photovoltaic inversion are boosted
Dry-type transformer.
Background technology
With the enhancing of the increasingly exhausted and mankind's environmental consciousness of the worldwide petrochemical energy, sent out using photovoltaic as the solar energy of core
Electric cause has a development advanced by leaps and bounds in recent years, and by the Main Means as world energy supplies.
At present, photovoltaic plant is investment reduction, saves installing space, many to share a boosting transformation from two inverters
The mode of device.However, there is the high fdrequency component of 3kHz or so frequencies in the output current of inverter in actual motion, compare power frequency
50Hz is much larger, if dealt with improperly, and inverter can be caused to occur abnormal conditions so that inverter operationally causes power network electricity
Corrugating excessive distortion, and to the excessive harmonic current of power network injection, the other equipment that power network is connected to inverter is caused
Adverse effect.And have circulation between two inverters, when abnormal conditions occur for inverter, it there is serious quality thing
Therefore hidden danger, or even immeasurable economic loss can be caused.
Utility model content
Technical problem to be solved in the utility model is that there is provided one kind for the drawbacks described above in the presence of prior art
The photovoltaic inversion double division boosting dry-type transformers of conjugation-type, can effectively suppress the line voltage ripple caused during invertor operation
Shape excessive distortion and suppress to inject excessive harmonic current to power network, generation circulation is avoided that again.
Solving the technical scheme that is used of the utility model technical problem is：
The utility model provides a kind of photovoltaic inversion double division boosting dry-type transformers of conjugation-type, and the transformer includes
Three-phase three-column conjugation-type is unshakable in one's determination, and it includes iron yoke and three-phase stem, and the iron yoke includes upper yoke, middle yoke and lower yoke, and it is described on
Yoke and lower yoke are separately positioned on the top and bottom of three-phase stem, and the middle yoke is arranged on the middle part of three-phase stem, per phase stem
On be wound with low pressure winding and high pressure winding, the high voltage winding group be split into above and below two high pressure winding portion, the low pressure around
Group be split into above and below two low pressure winding portions, and the middle yoke respectively will two high pressure winding portion up and down, it is and two low up and down
Pressure winding portion is separated, and provides high frequency flux paths.
Alternatively, the transformer also includes upper clamping piece, middle part folder and lower clamping piece, and the upper clamping piece is used to consolidate upper yoke
The top of three-phase stem is scheduled on, the middle part folder is used for the middle part that middle yoke is fixed on to three-phase stem, and the lower clamping piece is used for
Lower yoke is fixed on to the bottom of three-phase stem.
Alternatively, the upper clamping piece with each phase stem between the upper high pressure winding portion of coiling, upper low pressure winding portion, it is described
Middle part folder with each phase stem between the upper high pressure winding portion of coiling, upper low pressure winding portion, the middle part folder and each phase heart
On post between the lower high pressure winding portion of coiling, lower low pressure winding portion, and lower clamping piece and the lower high voltage winding of coiling on each phase stem
Between group portion, lower low pressure winding portion, device body briquetting is provided with.
Alternatively, the high pressure winding accesses power network by top leading-out terminal, and the low pressure winding is entered by top respectively
Line end and bottom inlet wire are connected to two inverters.
Alternatively, the upper high pressure winding portion of coiling and lower high pressure winding portion coupled in series on each phase stem, and each phase stem
The first end of the upper high pressure winding portion of upper coiling is top leading-out terminal, the second end of the lower high pressure winding portion of coiling on every phase stem
First end with the upper high pressure winding portion of coiling on another phase stem is connected, so as to form triangle connected mode.
Alternatively, the second end of the upper high pressure winding portion of coiling and the first end of lower high pressure winding portion pass through on each phase stem
Copper sheet is connected；On per phase stem the second end of the lower high pressure winding portion of coiling by angle knot be coupled copper pipe with another phase stem
The first end connection of the upper high pressure winding portion of coiling.
Alternatively, the first end in the upper low pressure winding portion of coiling is top end of incoming cables on each phase stem, on each phase stem around
Second end in the upper low pressure winding portion of system is connected in parallel；Second end in the lower low pressure winding portion of coiling is bottom on each phase stem
The first end in the lower low pressure winding portion of coiling is connected in parallel on end of incoming cables, each phase stem.
Alternatively, the cross section of each phase stem, upper yoke and lower yoke is the multistage stairstepping of circumscribed circle；The cross section of middle yoke
For rectangle.
Alternatively, the transformer also includes the feet for being arranged on its bottom.
Alternatively, the transformer also includes six cooling blowers being fixed in feet, wherein three cooling blowers are set
Put in the side unshakable in one's determination and close to each phase stem, its excess-three platform cooling blower is arranged on the opposite side unshakable in one's determination and close
Each phase stem.
Beneficial effect：
Photovoltaic inversion described in the utility model is boosted with the double divisions of conjugation-type in dry-type transformers, three-phase three-column conjugation-type iron
The middle yoke of the heart is respectively by two high pressure winding portion, and two low pressure winding portions are separated up and down up and down, and it is logical to provide high frequency magnetic flux
Road, so as to the grid voltage waveform excessive distortion that causes and suppress to inject excessive humorous to power network when effectively suppressing invertor operation
Ripple electric current, to avoid adversely affecting the other equipment for being connected to power network.Moreover, the transformer is a kind of environmental protection and energy saving
Type product, with heat-shock ability is strong, overload capacity is big, strong without flammable resin, fire retardant and urgent overload capability, is repaiied
Reason is easy to maintenance, insensitive to humidity, dust, does not ftracture, the characteristics of performance safety is reliable.
Brief description of the drawings
The main views for the photovoltaic inversion conjugation-type pair division boosting dry-type transformers that Fig. 1 provides for the utility model embodiment
Figure；
The side views for the photovoltaic inversion conjugation-type pair division boosting dry-type transformers that Fig. 2 provides for the utility model embodiment
Figure；
The front view for the three-phase three-column conjugation-type iron core that Fig. 3 provides for the utility model embodiment；
Fig. 4 is the Section A-A figure in Fig. 3；
Fig. 5 is the section B-B figure in Fig. 3；
High-low pressure winding and the structure diagram of iron yoke that Fig. 6 provides for the utility model embodiment；
The high pressure winding coupling schematic diagram that Fig. 7 provides for the utility model embodiment；
Fig. 8 is coupled schematic diagram for the low pressure winding that the utility model embodiment is provided.
In figure：1- upper yokes；2- upper clamping pieces；3- tops end of incoming cables；The upper high pressure winding portion of 4A-；High pressure winding under 4B-
Portion；The upper low pressure winding portions of 5A-；Low pressure winding portion under 5B-；Folder in the middle part of 6-；Yoke in 7-；8- bottoms end of incoming cables；Under 9-
Folder；Yoke under 10-；11- cooling blowers；12- feets；13- device body briquettings；14- copper sheets；15- angles knot is coupled copper pipe.
Embodiment
To make those skilled in the art more fully understand the technical solution of the utility model, with reference to the accompanying drawings and examples
The utility model is described in further detail.
The utility model embodiment provides a kind of photovoltaic inversion double division boosting dry-type transformers of conjugation-type.
As depicted in figs. 1 and 2, the transformer includes three-phase three-column conjugation-type iron core, described unshakable in one's determination including iron yoke and three
Phase stem, the iron yoke includes upper yoke 1, middle yoke 7 and lower yoke 10, and the upper yoke 1 and lower yoke 10 are separately positioned on three-phase stem
Top and bottom, the middle yoke 7 is arranged on the middle part of three-phase stem, so that it is (as shown in Figure 3) unshakable in one's determination to form matrix pattern.
Low pressure winding and high pressure winding are wound with per phase stem, as shown in Figure 2 and Figure 6, the high voltage winding component is split
For two high pressure winding portion up and down, that is, the upper high pressure winding portion 4A and lower high pressure winding portion 4B being vertically arranged are split into, it is described low
Pressure winding be split into above and below two low pressure winding portions, that is, be split into the upper low pressure winding portion 5A that is vertically arranged and lower low pressure winding portion
5B, and upper low pressure winding portion 5A and lower low pressure winding portion 5B be wrapped in outside stem, upper high pressure winding portion 4A is wrapped in low pressure
Outside winding portion 5A, lower high pressure winding portion 4B is wrapped in outside lower low pressure winding portion 5B；The middle yoke 7 is respectively by two high voltage windings up and down
Group portion, and two low pressure winding portions are separated up and down, in other words, middle yoke 7 is both by upper high pressure winding portion 4A and lower high pressure winding portion
4B is separated, and also separates lower high pressure winding portion 5A and lower low pressure winding portion 5B, and provides high frequency flux paths, thus suppresses high frequency
The effect of frequency is more notable.The scope of the high frequency is 1500~3500Hz.
In the utility model, middle yoke 7 respectively will up and down two high pressure winding portion, and up and down two low pressure winding portions every
Open, two groups of windings will separate up and down, and high frequency flux paths are provided, the transformer of this structure can effectively suppress inverter
The grid voltage waveform excessive distortion caused during operation, and effectively suppress grid-connected system in reversals because DC component is drawn
The harmonic pollution risen, and prevent harmonic wave from flowing into public network system and (prevent from injecting excessive harmonic current to power network), it is to avoid it is right
The other equipment for being connected to power network is adversely affected, while will not also produce circulation.The utility model is not only met well
Specific demand of the photovoltaic plant to the dry-type transformer that boosts, while also having the characteristics of manufacturing cost is low, installing space is saved.
As shown in Fig. 2 the transformer also includes upper clamping piece 2, middle part folder 6 and lower clamping piece 9, the upper clamping piece 2 is used for
Upper yoke 1 is fixed on to the top of three-phase stem, the middle part folder 6 is used for the middle part that middle yoke 7 is fixed on to three-phase stem, described
Lower clamping piece 9 is used for the bottom that lower yoke 10 is fixed on to three-phase stem.
As shown in figure 1, the upper clamping piece 1 and upper high pressure winding portion 4A, the upper low pressure winding portion 5A of coiling on each phase stem
Between, between the middle part folder 6 and upper high pressure winding portion 4A, the upper low pressure winding portion 5A of coiling on each phase stem, it is described in
Between portion's folder 6 and lower high pressure winding portion 4B, the lower low pressure winding portion 5B of coiling on each phase stem, and lower clamping piece 9 and each phase
On stem between lower high pressure winding portion 4B, the lower low pressure winding portion 5B of coiling, device body briquetting 13 is provided with, to support height
Press winding.Set moreover, device body briquetting 13 is preferably close to corresponding high-low pressure winding.
As shown in Fig. 2 the transformer also includes the feet 12 for being arranged on its bottom, support transformer is played and levelling
Effect.The transformer also includes six cooling blowers 11 being fixed in feet 12, wherein three cooling blowers 11 are arranged on
The side unshakable in one's determination and close each phase stem, its excess-three platform cooling blower 11 are arranged on the opposite side unshakable in one's determination and close to each
Phase stem, for giving the cooling of high-low pressure winding.
In addition, the high pressure winding accesses power network by top leading-out terminal 16, the low pressure winding is entered by top respectively
Line end 3 and bottom end of incoming cables 8 are connected to two inverters.In other words, low-pressure side two-way is inputted, and high-pressure side is exported all the way.
Specifically, as shown in fig. 7, the upper high pressure winding portion 4A of coiling connects connection with lower high pressure winding portion 4B on each phase stem
Connect；And the upper high pressure winding portion 4A of coiling first end is (namely the A in Fig. 1 and Fig. 7 of top leading-out terminal 16 on each phase stem
End, B ends and C-terminal), per phase stem on coiling lower high pressure winding portion 4B the second end (X ends, Y ends and Z i.e. in Fig. 1 and Fig. 7
End) first end with the upper high pressure winding portion 4A of coiling on another phase stem be connected, i.e. high pressure winding use " D " connection.Example
Such as, in Fig. 1 and Fig. 7, the lower high pressure winding portion 4B of coiling the second end (i.e. X ends) is with being located at centre on the stem in left side
Stem on coiling upper high pressure winding portion 4A first end (i.e. B ends) connection, the lower high pressure of coiling on middle stem
Winding portion 4B the second end (i.e. Y ends) and the first end (i.e. C-terminal) of the upper high pressure winding portion 4A of coiling on the stem on right side
Connection, positioned at the second end (i.e. Z ends) of the lower high pressure winding portion 4B of coiling on the stem on right side be located at left side stem on around
The upper high pressure winding portion 4A of system first end (i.e. A ends) connection, so as to form triangle connected mode.
In the utility model, due to high pressure winding using up and down cascaded structure so that high voltage winding component split each
High pressure winding portion is subjected only to the voltage of half, so the number of turn of each high pressure winding portion is only the half of prior art, meets
Photovoltaic power generation transformer low-pressure side requires dual output requirement, overcomes traditional high pressure winding because using up and down and being coupled
Structure and be subjected to full voltage, and high etc. the shortcoming of complicated, manufacturing cost, so as to effectively reduce unshakable in one's determination and whole transformer
The height (decline about 20~30%) and weight (alleviating about 20~30%) of device body, and high-low pressure winding width to size
(reducing about 20~30%)；Substantial amounts of production cost is saved.
Further, the upper high pressure winding portion 4A of coiling the second end and the first of lower high pressure winding portion 4B on each phase stem
End is connected by copper sheet 14；On per phase stem the lower high pressure winding portion 4B of coiling the second end by angle knot be coupled copper pipe 15 with
The upper high pressure winding portion 4A of coiling first end connection on another phase stem.
Specifically, as shown in figure 8, the upper low pressure winding portion 5A of coiling first end is top end of incoming cables on each phase stem
The upper low pressure winding portion 5A of coiling the second end is connected in parallel on (i.e. a1 ends, b1 ends and c1 ends in Fig. 8), each phase stem；
The lower low pressure winding portion 5B of coiling the second end is bottom end of incoming cables (i.e. a2 end, b2 ends and c2 ends in Fig. 8) on each phase stem,
The lower low pressure winding portion 5B of coiling first end is connected in parallel on each phase stem, i.e., low pressure winding uses " y " connection.Low-pressure side
Neutral point can be drawn, and can also be not brought up.More preferably, upper low pressure winding portion 5A and lower low pressure winding portion 5B using line around or paper tinsel
Around structure.
In the utility model, because low pressure winding splits into two low pressure winding portions up and down of longitudinal arrangement, can according to
Family demand is designed to have larger division impedance between two low pressure winding portions above and below causing, so that in transformer station high-voltage side bus
When, if short circuit occurs for a low pressure winding portion of low-pressure side, another low pressure winding portion remains to maintain higher voltage, it is ensured that
Each branch current in low-pressure side can independently be imported and is independent of each other, and can protect the even running of system public network seized with terror.Wherein divide
Splitting the specific scope of impedance can according to the actual requirements be set by those skilled in the art.
In addition, iron yoke and three-phase stem are made of the silicon steel sheet stacking successively, every grade of silicon steel sheet is rectangular strip
Structure.More preferably, the cross section of each phase stem, upper yoke 1 and lower yoke 10 is the multistage stairstepping (as shown in Figure 4) of circumscribed circle,
And left and right all axial symmetry are descended in the cross section of silicon steel sheets at different levels in the circumscribed circle of each phase stem, upper yoke 1 and lower yoke 10；Middle yoke 7
Cross section be rectangle (as shown in Figure 5), be easy to inserted sheet and fixation, and the sectional area of middle yoke 7 can be set by actual demand.
In summary, the photovoltaic inversion that the utility model the is provided double division boosting dry-type transformers of conjugation-type and existing skill
Art is compared, change core construction that the similar transformer in conventional photovoltaic power station used and high pressure winding up and down and be coupled
Structure, conjugation-type is used by iron core, and middle yoke separates upper and lower two groups of windings, and provides higher-frequency flux paths, is effectively suppressed
The grid voltage waveform excessive distortion that causes during invertor operation and suppress to inject excessive harmonic current to power network, to avoid
The other equipment for being connected to power network is adversely affected；Moreover, the weight of transformer itself have dropped about 20~30%；Together
When, the transformer device structure is simple, and easy to use, a dry-type transformer can connect two inverters simultaneously, meets well
Specific demand of the photovoltaic plant to the dry-type transformer that boosts, and will not produce circulation, installing space is also saved, is reduced into
This, it is ensured that the safe operation of power network.
The rated capacity of transformer described in the utility model should be depending on the capacity according to matched somebody with somebody inverter, high side voltage etc.
Level is generally 10kV, 35kV, and the rated voltage in two-way low pressure winding portion is identical, and voltage swing is also different with contravarianter voltage grade
And it is different.
It is understood that embodiment of above be merely to illustrate that principle of the present utility model and use it is exemplary
Embodiment, but the utility model is not limited thereto.For those skilled in the art, this is not being departed from
In the case of the spirit and essence of utility model, various changes and modifications can be made therein, and these variations and modifications are also considered as this reality
With new protection domain.
Claims (10)
1. a kind of photovoltaic inversion double division boosting dry-type transformers of conjugation-type, it is characterised in that the transformer includes three-phase
Three post conjugation-types are unshakable in one's determination, and it includes iron yoke and three-phase stem, and the iron yoke includes upper yoke, middle yoke and lower yoke, and the upper yoke with
Lower yoke is separately positioned on the top and bottom of three-phase stem, and the middle yoke is arranged on the middle part of three-phase stem, on every phase stem
Be wound with low pressure winding and high pressure winding, the high voltage winding group be split into above and below two high pressure winding portion, the low pressure winding point
Split for up and down two low pressure winding portions, and the middle yoke respectively will up and down two high pressure winding portion, and up and down two low pressure around
Group portion is separated, and provides high frequency flux paths.
2. transformer according to claim 1, it is characterised in that the transformer also include upper clamping piece, middle part folder and
Lower clamping piece, the upper clamping piece is used for the top that upper yoke is fixed on to three-phase stem, and the middle part folder is used to middle yoke being fixed on
The middle part of three-phase stem, the lower clamping piece is used for the bottom that lower yoke is fixed on to three-phase stem.
3. transformer according to claim 2, it is characterised in that the upper clamping piece and the upper high pressure of coiling on each phase stem
Between winding portion, upper low pressure winding portion, the middle part folder and upper high pressure winding portion, the upper low pressure winding of coiling on each phase stem
Between portion, the middle part folder with each phase stem between the lower high pressure winding portion of coiling, lower low pressure winding portion, and lower clamping piece
With between the lower high pressure winding portion of coiling, lower low pressure winding portion, being provided with device body briquetting on each phase stem.
4. transformer according to claim 1, it is characterised in that the high pressure winding accesses electricity by top leading-out terminal
Net, the low pressure winding is connected to two inverters by top end of incoming cables and bottom inlet wire respectively.
5. transformer according to claim 4, it is characterised in that the upper high pressure winding portion of coiling and lower height on each phase stem
The first end for pressing the upper high pressure winding portion of coiling in winding portion coupled in series, and each phase stem is top leading-out terminal, per phase stem
First end of second end of the lower high pressure winding portion of upper coiling with the upper high pressure winding portion of coiling on another phase stem is connected, from
And form triangle connected mode.
6. transformer according to claim 5, it is characterised in that the second of the upper high pressure winding portion of coiling on each phase stem
End is connected with the first end of lower high pressure winding portion by copper sheet；The second end of the lower high pressure winding portion of coiling leads on per phase stem
Angle knot connection copper pipe is crossed to be connected with the first end of the upper high pressure winding portion of coiling on another phase stem.
7. transformer according to claim 4, it is characterised in that the first of the upper low pressure winding portion of coiling on each phase stem
End is top end of incoming cables, and second end in the upper low pressure winding portion of coiling is connected in parallel on each phase stem；Coiling on each phase stem
Second end in lower low pressure winding portion be bottom end of incoming cables, the first end in the lower low pressure winding portion of coiling is connected in parallel on each phase stem
Together.
8. transformer according to claim 1, it is characterised in that the cross section of each phase stem, upper yoke and lower yoke is outer
Connect round multistage stairstepping；The cross section of middle yoke is rectangle.
9. the transformer according to any one of claim 1-8, it is characterised in that the transformer also includes being arranged on it
The feet of bottom.
10. transformer according to claim 9, it is characterised in that the transformer also includes six be fixed in feet
Platform cooling blower, wherein three cooling blowers are arranged on the side unshakable in one's determination and close to each phase stem, its excess-three platform cooling wind
Machine is arranged on the opposite side unshakable in one's determination and close to each phase stem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720083374.3U CN206516457U (en) | 2017-01-20 | 2017-01-20 | A kind of photovoltaic inversion double division boosting dry-type transformers of conjugation-type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720083374.3U CN206516457U (en) | 2017-01-20 | 2017-01-20 | A kind of photovoltaic inversion double division boosting dry-type transformers of conjugation-type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206516457U true CN206516457U (en) | 2017-09-22 |
Family
ID=59866489
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720083374.3U Withdrawn - After Issue CN206516457U (en) | 2017-01-20 | 2017-01-20 | A kind of photovoltaic inversion double division boosting dry-type transformers of conjugation-type |
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| Country | Link |
|---|---|
| CN (1) | CN206516457U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107808760A (en) * | 2017-12-12 | 2018-03-16 | 保定天威集团特变电气有限公司 | Quadripartion combined transformer |
| CN108257771A (en) * | 2018-01-16 | 2018-07-06 | 江西赣电电气有限公司 | A kind of double division dry-type transformers of photovoltaic |
| CN108335867A (en) * | 2017-01-20 | 2018-07-27 | 特变电工智能电气有限责任公司 | A kind of photovoltaic inversion double division boosting dry-type transformers of conjugation-type |
| CN111933424A (en) * | 2020-07-13 | 2020-11-13 | 山东电工电气集团智能电气有限公司 | Transformer coil winding structure and double-split dry-type transformer |
-
2017
- 2017-01-20 CN CN201720083374.3U patent/CN206516457U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108335867A (en) * | 2017-01-20 | 2018-07-27 | 特变电工智能电气有限责任公司 | A kind of photovoltaic inversion double division boosting dry-type transformers of conjugation-type |
| CN108335867B (en) * | 2017-01-20 | 2024-01-23 | 特变电工智能电气有限责任公司 | Conjugated double-split boosting dry-type transformer for photovoltaic inversion |
| CN107808760A (en) * | 2017-12-12 | 2018-03-16 | 保定天威集团特变电气有限公司 | Quadripartion combined transformer |
| CN107808760B (en) * | 2017-12-12 | 2024-05-17 | 保定天威集团特变电气有限公司 | Four-split combined transformer |
| CN108257771A (en) * | 2018-01-16 | 2018-07-06 | 江西赣电电气有限公司 | A kind of double division dry-type transformers of photovoltaic |
| CN108257771B (en) * | 2018-01-16 | 2020-11-13 | 江西赣电电气有限公司 | Photovoltaic double-split dry-type transformer |
| CN111933424A (en) * | 2020-07-13 | 2020-11-13 | 山东电工电气集团智能电气有限公司 | Transformer coil winding structure and double-split dry-type transformer |
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