CN203721467U - Conjugated high-efficiency three-phase-to-single-phase transformer - Google Patents
Conjugated high-efficiency three-phase-to-single-phase transformer Download PDFInfo
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- CN203721467U CN203721467U CN201320643540.2U CN201320643540U CN203721467U CN 203721467 U CN203721467 U CN 203721467U CN 201320643540 U CN201320643540 U CN 201320643540U CN 203721467 U CN203721467 U CN 203721467U
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Abstract
The utility model relates to a conjugated high-efficiency three-phase-to-single-phase transformer which comprises a Theta-shaped core, wherein the Theta-shaped core is provided with a left core column and a right core column; the left core column is provided with a three-phase winding; the right core column is provided with a single-phase winding; an upper yoke, a lower yoke and an intermediate yoke are connected between the left and right core columns. According to the transformer, a Scott connecting mode is adopted for forming the three-phase-to-single-phase transformer, wherein the intermediate yoke connected between the left and right core columns is used as a common yoke for a teaser transformer and a main transformer, and most of magnetic fluxes of the teaser transformer and the main transformer are canceled at the intermediate yoke to reduce the section of the common yoke to be 1/3 of that of the upper or lower yoke, so that the size and the cost are reduced.
Description
Technical field
The utility model relates to transformer technology field, refers in particular to a kind of by conjugation-type high-efficiency three-phase change single-phase transformer.
Background technology
At present, in industry, such as plating, electric welding and electrolysis plant etc. all needs a large amount of single phase poaer supplies, therefore, industry just must consider how three-phase mains power conversion is become to single phase poaer supply, but in conversion operation process, can there is the asymmetric of load and will cause the imbalance of three phase mains, thereby can bring grievous injury to electrical network.Existing transformer changing from three phases to single phase has Vi connection transformer and Scott connection transformer, and Vi connection transformer is three-phase core type, and centre is not set with winding, and two side columns are placed respectively winding, and connection is comparatively complicated like this, and input current is also very uneven, Scott connection transformer principle figure is shown in Fig. 2, system can be transformed into three phase mains when these two single-phase load equal and opposite in directions, character is identical, phase difference is the power supply of 90 degree, simultaneously the three-phase current of transformer primary side is also comparatively symmetrical, so be with a single-phase load after the T of transformer becomes secondary side and the series connection of M change secondary side, can realize the object of three phase transformation single phase poaer supplies, the Scott connection transformer occurring in the market exists magnetic flux larger, cost is high, bulky problem, to use, make troubles, by this, for present situation industry, need further optimization transformer device structure badly, to be more suitable for environment now, use.
Utility model content
The utility model proposes a kind of conjugation-type high-efficiency three-phase for Scott connection transformer and becomes single-phase transformer, to reach reduction magnetic flux, improves operational efficiency, the effect reducing costs.
For realizing above-mentioned object, the utility model adopts following technical scheme:
A kind of conjugation-type high-efficiency three-phase becomes single-phase transformer, comprise one " day " shape iron core, should there is left stem stem and right stem stem by " day " shape iron core, this left stem stem is provided with three phase windings, this right stem stem is provided with single-phase winding, between described left stem stem and right stem stem, be connected with yoke, yoke in the middle of lower yoke and, this centre yoke is divided into the first stem stem and the second stem stem by left stem stem, and right stem stem is divided into the 3rd stem stem and four-limbed, this first stem stem, the 3rd stem stem, the common formation of middle yoke and upper yoke the first Ci Jiong road, this second stem stem, four-limbed, the common formation of middle yoke and lower yoke the second Ci Jiong road, described the first stem stem, the second stem stem correspondence is wound with the first coil, the second coil, this the first coil one end is connected in the second coil and forms three phase windings, described the 3rd stem stem and four-limbed correspondence are wound with tertiary coil, the 4th coil, this tertiary coil and the 4th coil are connected to form single-phase winding, the first coil and tertiary coil form Building T transformer, the magnetic flux of this Building T transformer is around the first Ci Jiong road, this second coil and the 4th coil form Building M transformer, the magnetic flux of this Building M transformer is around the second Ci Jiong road, and the magnetic flux flows direction of Building T transformer and Building M transformer is identical.
Described the first coil is identical with the second coil winding-direction, and tertiary coil is identical with the 4th coil winding-direction.
Described tertiary coil terminal is connected with the 4th coil initiating terminal.
Described both sides yoke width is identical, and yoke width in the middle of being greater than.
The utility model beneficial effect is to adopt " day " shape iron core middle left and right side column corresponding to three phase windings and single-phase winding respectively, adopt Scott connection to form transformer changing from three phases to single phase, wherein the middle yoke being connected between left and right side column is shared to yoke as Building T transformer and Building M transformer, magnetic flux is offset in middle yoke major part, thereby in can reducing, yoke cross section, to original 1/3, reduces costs greatly.
Accompanying drawing explanation
Fig. 1 is the utility model transformer device structure schematic diagram;
Fig. 2 is existing Scott connection transformer principle figure.
Drawing reference numeral explanation:
10, day shape iron core 11, left stem stem
111, the first stem stem 112, the second stem stem
12, right stem stem 121, the 3rd stem stem
122, four-limbed 13a, upper yoke 13b, lower yoke
14, middle yoke 15, the first Ci Jiong road
16, the second Ci Jiong road 20, three phase windings
21, the first coil 22, the second coil
30, single-phase winding 31, tertiary coil
32, the 4th coil Φ
1,Φ
2, magnetic flux flow to.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is further described.
As shown in Figure 1, a kind of conjugation-type high-efficiency three-phase becomes single-phase transformer, comprise one " day " shape iron core 10, should there is left stem stem 11 and right stem stem 12 by " day " shape iron core 10, this left stem stem 11 is provided with three phase windings 20, this right stem stem 12 is provided with single-phase winding 30, between described left stem stem 11 and right stem stem 12, be connected with yoke 13a, yoke 14 in the middle of lower yoke 13b and, this centre yoke 14 is divided into the first stem stem 111 and the second stem stem 112 by left stem stem 11, and right stem stem 12 is divided into the 3rd stem stem 121 and four-limbed 122, this first stem stem 111, the 3rd stem stem 121, middle yoke 14 and upper yoke 13a enclose the first Ci Jiong road 15 that forms sealing jointly, this second stem stem 112, four-limbed 122, middle yoke 14 and lower yoke 13b enclose the second Ci Jiong road 16 that forms sealing jointly, described the first stem stem 111, the second stem stem 112 correspondences are wound with the first coil 21, the second coil 22, these the first coil 21 one end are connected in the second coil 22 and form three phase windings 20, certainly the position of these the first coil 21 access the second coils 22 is to meet the requirement of Scott connection transformer, Scott connection transformer is existing mature technology, the input of the corresponding access of the present embodiment this first coil 21 initiating terminal R and the second coil 22 initiating terminal S, terminal w three phase mains.Described the 3rd stem stem 121 and four-limbed 122 correspondences are wound with tertiary coil 31, the 4th coil 32, this tertiary coil 31 and the 4th coil 32 can be contacted and be connected to form single-phase winding 30, as this tertiary coil 31 terminal b in figure are connected with the 4th coil 32 initiating terminal c, the N end of the 4th coil 32 terminal d access single phase poaer supply outputs.The first coil 21 forms Building T transformer with tertiary coil 31, and the magnetic flux of this Building T transformer flows around the first Ci Jiong road 15, and magnetic flux flow is to Φ as shown in FIG.
1flow clockwise, this second coil 22 and the 4th coil 32 form Building M transformer, and the magnetic flux of this Building M transformer flows around the second Ci Jiong road 16, and magnetic flux flow is to Φ as shown in FIG.
2flow clockwise, and the magnetic flux flows direction of Building M transformer and T transformer is identical, i.e. Φ
1and Φ
2identical flows clockwise, and magnetic flux can carry out partial offset at middle yoke 14 like this.Certainly, the counter clockwise direction that the two flow direction also can be identical flows, and at this, designs as required.
For guaranteeing that better magnetic flux flow is to identical, described the first coil 21 and the second coil 22 are around to identical, as the first coil 21, the second coil 22 in figure are clockwise coiling, this tertiary coil 31 and the 4th coil 32 are around to identical, as tertiary coil in figure 31, the 4th coil 32 are counterclockwise coiling.Further, guaranteeing that magnetic flux flow, under identical prerequisite, makes magnetic flux better at middle yoke 14 position partial offsets, described both sides yoke 13 width are identical, and yoke 14 width in the middle of being greater than.
The utility model design focal point adopts " day " shape iron core middle left and right side column corresponding to three phase windings and single-phase winding respectively, in conjunction with Scott connection, form transformer changing from three phases to single phase, wherein the middle yoke being connected between left and right side column is shared to yoke as Building T transformer and Building M transformer, magnetic flux is offset in middle yoke major part, thereby in can reducing, yoke cross section, to original 1/3, reduces costs greatly.
The above, it is only the preferred embodiment of the utility model structure, not technical scope of the present utility model is imposed any restrictions, therefore any trickle modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all still belong in the scope of technical solutions of the utility model.
Claims (4)
1. a conjugation-type high-efficiency three-phase becomes single-phase transformer, it is characterized in that: comprise one " day " shape iron core, should there is left stem stem and right stem stem by " day " shape iron core, this left stem stem is provided with three phase windings, this right stem stem is provided with single-phase winding, between described left stem stem and right stem stem, be connected with yoke, yoke in the middle of lower yoke and, this centre yoke is divided into the first stem stem and the second stem stem by left stem stem, and right stem stem is divided into the 3rd stem stem and four-limbed, this first stem stem, the 3rd stem stem, the common formation of middle yoke and upper yoke the first Ci Jiong road, this second stem stem, four-limbed, the common formation of middle yoke and lower yoke the second Ci Jiong road, described the first stem stem, the second stem stem correspondence is wound with the first coil, the second coil, this the first coil one end is connected in the second coil and forms three phase windings, described the 3rd stem stem and four-limbed correspondence are wound with tertiary coil, the 4th coil, this tertiary coil and the 4th coil are connected to form single-phase winding, the first coil and tertiary coil form Building T transformer, the magnetic flux of this Building T transformer is around the first Ci Jiong road, the second coil and the 4th coil form Building M transformer, the magnetic flux of this Building M transformer is around the second Ci Jiong road, and Building T transformer is identical with the flow direction of Building M transformer.
2. conjugation-type high-efficiency three-phase becomes single-phase transformer according to claim 1, it is characterized in that: described the first coil is identical with the second coil winding-direction, and tertiary coil is identical with the 4th coil winding-direction.
3. conjugation-type high-efficiency three-phase becomes single-phase transformer according to claim 1, and its feature is on ground: described tertiary coil terminal is connected with the 4th coil initiating terminal.
4. conjugation-type high-efficiency three-phase becomes single-phase transformer according to claim 1, it is characterized in that: both sides yoke width is identical, and yoke width in the middle of being greater than.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320643540.2U CN203721467U (en) | 2013-10-18 | 2013-10-18 | Conjugated high-efficiency three-phase-to-single-phase transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320643540.2U CN203721467U (en) | 2013-10-18 | 2013-10-18 | Conjugated high-efficiency three-phase-to-single-phase transformer |
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| Publication Number | Publication Date |
|---|---|
| CN203721467U true CN203721467U (en) | 2014-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320643540.2U Withdrawn - After Issue CN203721467U (en) | 2013-10-18 | 2013-10-18 | Conjugated high-efficiency three-phase-to-single-phase transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203721467U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103578716A (en) * | 2013-10-18 | 2014-02-12 | 东莞市光华实业有限公司 | Conjugate high-efficiency transformer for changing three-phase power supply into single-phase power supply |
-
2013
- 2013-10-18 CN CN201320643540.2U patent/CN203721467U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103578716A (en) * | 2013-10-18 | 2014-02-12 | 东莞市光华实业有限公司 | Conjugate high-efficiency transformer for changing three-phase power supply into single-phase power supply |
| CN103578716B (en) * | 2013-10-18 | 2016-03-02 | 东莞市光华实业有限公司 | Conjugation-type high-efficiency three-phase becomes single-phase transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151222 Address after: 523000 Guangdong province Dongguan meinengda new City Shilong Town Road No. 6-8 Patentee after: Dongguan Guangye Energy-Saving Technology Co., Ltd. Address before: 523000 Guangdong Province, Dongguan City Shilong Town, Huangzhou city new Minolta road Dongguan Guanghua Industry Co. Ltd. Patentee before: Dongguan Guanghua Industry Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140716 Effective date of abandoning: 20160302 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |