CN202034208U - Photovoltaic phase shifting rectification transformer - Google Patents
Photovoltaic phase shifting rectification transformer Download PDFInfo
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- CN202034208U CN202034208U CN2011200472521U CN201120047252U CN202034208U CN 202034208 U CN202034208 U CN 202034208U CN 2011200472521 U CN2011200472521 U CN 2011200472521U CN 201120047252 U CN201120047252 U CN 201120047252U CN 202034208 U CN202034208 U CN 202034208U
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- rectifier transformer
- photovoltaic
- iron core
- pressure winding
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Abstract
The utility model discloses a photovoltaic phase shifting rectification transformer, which comprises an iron core (3), and a high tension winding (1) and a high tension winding (2) both winded on the iron core (3); wherein the head and the end of the high tension winding (1) are both disposed on the positions convenient for an operator to connect wires, to enable that the high tension winding (1) can be connected in a triangle connection or a star connection based on needs. In the transformer of the utility model, the high tension winding can be switched freely between a triangle connection and a star connection, thereby can be connected into two types of voltage system for receiving power at different periods.
Description
Technical field
The utility model belongs to technical field of transformer manufacturing, is specifically related to a kind of photovoltaic phase-shifting rectifier transformer.
Background technology
In industrial production, the photovoltaic power supply system is except that for the photovoltaic electrical network provides the voltage source,
Also need luminous intensity distribution volt product testing usefulness, and the photovoltaic electrical network during with the photovoltaic product testing voltage different, thereby require transformer high-voltage side energy be connected to two kinds of electrical voltage systems the non-same period to be subjected to electricity, and will satisfy the requirement of line voltage equalization stable.The transformer that photovoltaic power supply system output is equipped with in the industrial production all is common three-phase transformer at present, the problem of its existence is: first, common three-phase transformer is made of jointly two above voltage regulating transformers, to realize the being connected to purpose that two kinds of electrical voltage systems the are subjected to electricity non-same period, reliability is low so the project occupation of land area is big, cost is high; The second, most transformers are the oil immersed type structure, and this structure easily produces the seepage greasy dirt and dyes problem of environment, and blast easily and cause fire safety evaluating hidden danger; The 3rd, there are repeatedly 24 following odd harmonics in the photovoltaic power supply net, causes the voltage fluctuation of photovoltaic power supply net serious, can not provide the voltage of equalization stable to the electric equipment in the electrical network, and infringements such as phenomenon impact.
The utility model content
The technical problems to be solved in the utility model is at the above-mentioned deficiency of existing in prior technology, provides a kind of and can be connected to the photovoltaic phase-shifting rectifier transformer that two kinds of electrical voltage systems are subjected to electricity the non-same period.
The technical scheme that solution the utility model technical problem is taked is that this photovoltaic phase-shifting rectifier transformer adopts three-phase transformer, it comprises iron core, is wound on high pressure winding and low pressure winding on the iron core, the head end of described high pressure winding and tail end all are arranged on the position of being convenient to operator's wiring, and triangle connects or star connects so that the high pressure winding can carry out as required.
Preferably, the head end of described high pressure winding and tail end all are arranged on the top of himself.Because the head end of high pressure winding and the top that tail end all is located at transformer, be convenient to the operator and carry out wiring, can carry out triangle connection (D) during use as required and obtain a kind of voltage, can carry out star connection (Y) again and obtain another kind of voltage, so just make transformer be connected to two kinds of electrical voltage systems the non-same period and be subjected to electricity, operation is simple.
Preferably, every phase winding all has shunting tap more than three or three in the described high pressure winding.
Further preferably, described low pressure winding can comprise a plurality of division phase shift groups, and described a plurality of division phase shift groups are arranged along axis of winding.Adopt division phase shift group to influence by harmonic carcellation, make output waveform not have harmonic wave.The quantity that group is shifted in preferred described division is 3-9.That is to say, can accomplish to be divided into tripartition (18 pulse wave), quadripartion (24 pulse wave), five divisions (30 pulse wave), six divisions (36 pulse wave), seven divisions (42 pulse wave), eight divisions (48 pulse wave), nine divisions (54 pulse wave) according to customer requirements in the actual production, division number is many more, and then the harmonic carcellation effect is good more.
Adopt insulating material to isolate between preferred described each division phase shift group.
More preferably, described each division phase shift group can comprise several little windings of arranging along axis of winding, described several little windings are connected into the lengthened triangular connection respectively, and the high pressure that the sinusoidal rule that makes system obtain regulating continuously changes is exported and made and respectively divides the coil capacity equilibrium.
Preferably, the utility model rectifier transformer adopts dry-type transformer, thereby is difficult for producing the seepage greasy dirt and dyes problem of environment, thereby can not cause fire safety evaluating hidden danger because of blasting.
Preferably, described iron core adopts high magnetic conduction cold-rolled orientation silicon steel sheet to laminate and makes, and iron core adopts three grades of seam modes of 45 to carry out lamination.This lamination mode can make iron core magnetic conduction sectional area the best, reduces the no-load loss and the exciting curent of transformer simultaneously.
Preferably, described iron core adopts does not have perforation screw rod iron core, and by arm-tie and atresia binding structure iron core is fixed, thereby has reduced no-load current effectively, loss and noise.
The beneficial effects of the utility model are: make transformer realize being connected to the non-same period two kinds of electrical voltage systems and be subjected to; There is a phase difference because the secondary coil of photovoltaic phase-shifting rectifier transformer of the present invention is the low pressure winding between mutually, realized multipleization of output, can realize that thus output waveform do not have harmonic wave, reduce pollution the photovoltaic electrical network; No-load current, exciting curent, magnetic hysteresis loss and noise have been reduced; Thereby having solved common three-phase transformer produces the seepage greasy dirt and dyes environment or blast and cause the problem of fire safety evaluating hidden danger, and, the utility model rectifier transformer is equivalent to many voltage regulating transformers are integrated, so can reduce the project occupation of land area, and it is easier for installation, move more reliably, cost is cheaper.
Description of drawings
Fig. 1 is the schematic diagram of the utility model photovoltaic phase-shifting rectifier transformer;
Fig. 2 is the structural representation of the utility model photovoltaic phase-shifting rectifier transformer;
Fig. 3 is that the utility model photovoltaic phase-shifting rectifier transformer high-pressure side triangle connects the connection schematic diagram of (D);
Fig. 4 is that the utility model photovoltaic phase-shifting rectifier transformer high-pressure side star connects the connection schematic diagram of (Y).
Among the figure: 1-high pressure winding; 2-low pressure winding; The 3-iron core.
Embodiment
For making those skilled in the art understand the technical solution of the utility model better, the utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 2, the utility model photovoltaic phase-shifting rectifier transformer is a three-phase transformer, and in the present embodiment, this rectifier transformer adopts dry-type transformer, and it comprises iron core 3, high pressure winding 1 and low pressure winding 2.Wherein, high pressure winding 1 and low pressure winding 2 are wound on the iron core 3 successively according to from inside to outside arrangement.
The head end of described high pressure winding 1 and tail end all are arranged on the position of being convenient to operator's wiring, and triangle connects or star connects (shown in Fig. 3,4) so that the operator can be set to high pressure winding 1 as required.In the present embodiment, the head end of high pressure winding 1 and tail end all are arranged on the top of high pressure winding self.Like this, by changing the relative connection of high pressure winding 1 outside line end simply, obtain a kind of voltage as adopting triangle to connect, thereby provide power supply for the photovoltaic electrical network, adopt star to connect (Y) and obtain another kind of voltage and can supply photovoltaic product testing usefulness, or use when connecing frequency converter, induction voltage regulator.And the every phase winding in the high pressure winding 1 all can have the shunting tap (as shown in Figure 1) more than three.
Low pressure winding 2 comprises a plurality of division phase shift groups, and described a plurality of division phase shift groups are arranged along axis of winding.As shown in Figure 1, in the present embodiment, low pressure winding 2 adopts to five division phase shift groups (being that the quantity that group is shifted in described division is 5), simultaneously, adopts insulating material to isolate respectively between five division phase shift groups.The voltage stack that each divides the phase shift group can suppress the odd harmonic of electrical network below 24 times, makes axial phase shifting angle more accurate.
In the present embodiment, in the low pressure winding 2, each division phase shift group comprises several little windings of arranging along axis of winding, and described several little windings are connected into the lengthened triangular connection respectively.The high pressure output that the sinusoidal rule that makes system obtain regulating continuously changes and respectively divide the coil capacity equilibrium.
In the present embodiment, iron core adopts high magnetic conduction cold-rolled orientation silicon steel sheet to be overrided to form, and described iron core 3 laminations adopt three grades of seam laminations of 45 mode, and this lamination mode can make iron core magnetic conduction sectional area the best, reduces the no-load loss and the exciting curent of transformer simultaneously.Simultaneously, iron core 3 adopts does not have perforation screw rod iron cores, and adopts arm-tie and atresia binding structure that it is fixed, thereby has reduced no-load current effectively, loss and noise.By analyzing the magnetic potential relation, determine respectively to organize the capacity allocation of coil, accurately calculate the number of turn of phase shift coil, realize any adjustment of phase shifting angle.Its compact conformation, the outside that the lead-out wire of low pressure winding 2 can be arranged on power transformer product is more to help terminal block.
The utility model photovoltaic phase-shifting rectifier transformer can effectively suppress following odd harmonic 24 times, and the photovoltaic electrical network is purified more.
Below be the example of technical parameter that adopts the transformer of present embodiment structure:
Rated capacity: 360kVA; The specified input line voltage of high pressure winding 1: corner connection 390V, star meets 675V; Low pressure winding 2 specified output line voltage: 5 * 104V (5 groups); Rated frequency: 50Hz; The rated current of high pressure winding 1: corner connection 560A, star meets 323A; The rated current of low pressure winding 2: 400A; The phase shift angle of low pressure winding 2: 24 °, 12 °, 0 ° ,-12 ° ,-24 °; Impedance voltage Ud%:4.5%; Overload capacity: 1.2 times of 60 seconds (60 minutes cycles), 1.1 times 5 minutes; Body office puts :≤10pC; The class of insulation: H level.
Be understandable that above execution mode only is the illustrative embodiments that adopts for principle of the present utility model is described, yet the utility model is not limited thereto.For those skilled in the art, under the situation that does not break away from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement also are considered as protection range of the present utility model.
Claims (10)
1. photovoltaic phase-shifting rectifier transformer, comprise iron core (3), be wound on high pressure winding (1) and low pressure winding (2) on the iron core (3), it is characterized in that, the head end and the tail end of described high pressure winding (1) all are arranged on the position of being convenient to operator's wiring, and triangle connects or star connects so that high pressure winding (1) can carry out as required.
2. photovoltaic phase-shifting rectifier transformer according to claim 1 is characterized in that, the head end of described high pressure winding (1) and tail end all are arranged on the high pressure winding from the body.
3. photovoltaic phase-shifting rectifier transformer according to claim 1 is characterized in that, every phase winding all has the shunting tap more than three or three in the described high pressure winding (1).
4. photovoltaic phase-shifting rectifier transformer according to claim 1 is characterized in that, described low pressure winding (2) comprises a plurality of division phase shift groups, and described a plurality of division phase shift groups are arranged along axis of winding.
5. photovoltaic phase-shifting rectifier transformer according to claim 4 is characterized in that, the quantity that group is shifted in described division is 3-9.
6. photovoltaic phase-shifting rectifier transformer according to claim 4 is characterized in that, adopts insulating material to isolate between described each division phase shift group.
7. photovoltaic phase-shifting rectifier transformer according to claim 4 is characterized in that, described each division phase shift group comprises several little windings of arranging along axis of winding, and described several little windings are connected into the lengthened triangular connection respectively.
8. according to the described photovoltaic phase-shifting rectifier transformer of one of claim 1-7, it is characterized in that this rectifier transformer adopts dry-type transformer.
9. according to the described photovoltaic phase-shifting rectifier transformer of one of claim 1-7, it is characterized in that described iron core (3) adopts high magnetic conduction cold-rolled orientation silicon steel sheet to laminate and makes, iron core (3) adopts three grades of seam modes of 45 to carry out lamination.
10. according to the described photovoltaic phase-shifting rectifier transformer of one of claim 1-7, it is characterized in that described iron core (3) adopts does not have perforation screw rod iron core, and iron core (3) is fixed by arm-tie and atresia binding structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200472521U CN202034208U (en) | 2011-02-24 | 2011-02-24 | Photovoltaic phase shifting rectification transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200472521U CN202034208U (en) | 2011-02-24 | 2011-02-24 | Photovoltaic phase shifting rectification transformer |
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| Publication Number | Publication Date |
|---|---|
| CN202034208U true CN202034208U (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200472521U Expired - Fee Related CN202034208U (en) | 2011-02-24 | 2011-02-24 | Photovoltaic phase shifting rectification transformer |
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| CN (1) | CN202034208U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151153A (en) * | 2013-04-03 | 2013-06-12 | 株洲市科达电机技术有限公司 | Concentric type axial four-division traction transformer and realization method thereof |
| CN105742039A (en) * | 2016-05-03 | 2016-07-06 | 江西变压器科技股份有限公司 | Coil structure of single-set single-transformer-body 18-pulsewave rectifier transformer |
-
2011
- 2011-02-24 CN CN2011200472521U patent/CN202034208U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151153A (en) * | 2013-04-03 | 2013-06-12 | 株洲市科达电机技术有限公司 | Concentric type axial four-division traction transformer and realization method thereof |
| CN103151153B (en) * | 2013-04-03 | 2014-09-10 | 株洲市科达电机技术有限公司 | Concentric type axial four-division traction transformer and realization method thereof |
| CN105742039A (en) * | 2016-05-03 | 2016-07-06 | 江西变压器科技股份有限公司 | Coil structure of single-set single-transformer-body 18-pulsewave rectifier transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20140224 |