CN103000349A - Three-phase miniature transformer - Google Patents
Three-phase miniature transformer Download PDFInfo
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- CN103000349A CN103000349A CN 201210468935 CN201210468935A CN103000349A CN 103000349 A CN103000349 A CN 103000349A CN 201210468935 CN201210468935 CN 201210468935 CN 201210468935 A CN201210468935 A CN 201210468935A CN 103000349 A CN103000349 A CN 103000349A
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- winding
- phase windings
- miniature transformer
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Abstract
The invention discloses a three-phase miniature transformer. The three-phase miniature transformer comprises a primary winding, a secondary winding and an iron core, wherein the primary winding comprises three-phase windings which are connected with one another in a star form or are independent from one another, and each phase line in the three-phase windings is connected with a neutral line by a winding; when the neutral lines of the three-phase windings are not connected together, the three-phase windings are independent from one other; when the neutral lines of the three-phase windings are connected together, the three-phase windings are connected in the star form; and the secondary winding comprises three-phase windings which are connected with one another in a star form or are independent from one another, and the connecting mode of output lines of the secondary winding is same as that of the primary winding. The three-phase miniature transformer is small in size and simple in structure, can realize multi-voltage output and single-phase output, and is convenient to use.
Description
Technical field
The present invention relates to a kind of transformer, relate in particular to a kind of three-phase miniature transformer.
Background technology
Large-scale three-phase transformer is widely used in the alternating current steady voltage plug of electronic computer, precision machine tool, computer body-layer scanning photograph, precision instrument, experimental provision, elevator, import equipment and the production line of the departments such as industrial and mining enterprises, post and telecommunications, weaving, railway, construction site, school, hospital, hotel, national defence, scientific research, also is applicable to the low-voltage distribution that supply voltage is low, fluctuating range is large simultaneously.But traditional three-phase transformer volume is very large, can not use on some miniature PCB wiring boards.And traditional buck transformer only has single-phase, when a plurality of voltage requirements is arranged, needs several independently single-phase transformers.
Summary of the invention
For above-mentioned technical problem, the object of the present invention is to provide a kind of three-phase miniature transformer, its armature winding adopt star-like or independent connection simple in structure, be convenient to terminal block, secondary winding equally also can be realized the single-phase independently-powered or star-like power supply of three-phase, and volume is little, and is practical and convenient.
For reaching this purpose, the present invention by the following technical solutions:
A kind of three-phase miniature transformer, it comprises armature winding, secondary winding and iron core; Described armature winding is Y-connection or three phase windings independently, each phase line is connected with the neutral line through winding in this three phase winding, when the neutral line of described three phase windings does not link together, three phase windings are separate, when the neutral line of described three phase windings linked together, three phase windings consisted of star-like connection; Described secondary winding is Y-connection or three phase windings independently, and the connected mode of its output line is identical with armature winding.
Especially, described iron core assembly adopts cold-reduced silicon sheet.
Among the present invention armature winding adopt star-like or independent connection simple in structure, be convenient to terminal block, secondary winding equally also can be realized the single-phase independently-powered or star-like power supply of three-phase, and volume is little, and is practical and convenient.
Description of drawings
Fig. 1 is the three-phase miniature transformer cut-away view that the embodiment of the invention one provides;
Fig. 2 is the three-phase miniature transformer cut-away view that the embodiment of the invention two provides;
Fig. 3 is the three-phase miniature transformer overall structure figure that the embodiment of the invention provides;
Fig. 4 is the structure chart of the three-phase miniature transformer core that provides of the embodiment of the invention;
Fig. 5 is the structure chart of the three-phase miniature transformer integrated coil that provides of the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the invention will be further described below in conjunction with drawings and Examples.
Please refer to shown in Figure 1ly, Fig. 1 is the three-phase miniature transformer cut-away view that the embodiment of the invention one provides.The three-phase miniature transformer comprises primary of high voltage winding, low-voltage secondary winding and iron core in the present embodiment.Described primary of high voltage winding is three phase windings independently, and each phase line is connected with the neutral line through winding in this three phase winding, and the neutral line of described three phase windings does not link together, and three phase windings are separate.Three phase windings of described primary of high voltage winding are respectively: G1 phase winding, G2 phase winding, G3 phase winding, described G1 phase winding, G2 phase winding, G3 phase winding all are that phase line independently links to each other with the neutral line.Described low-voltage secondary winding is three phase windings independently, and it is respectively: D1 phase winding, D2 phase winding, D3 phase winding, the connected mode of its output line is identical with the primary of high voltage winding.Described low-voltage secondary winding is recently finished high voltage to the step-down conversion of low-voltage by the number of turn of primary of high voltage coil and low-voltage secondary coil.
As shown in Figure 2, when three road neutral lines of the G1 of primary of high voltage winding phase winding, G2 phase winding, G3 phase winding link together, namely realized the star-like connection of G1 phase winding, G2 phase winding and G3 phase winding; When the low-voltage secondary winding is the same with the primary of high voltage winding, when three road neutral lines of D1 phase winding, D2 phase winding, D3 phase winding are linked together, namely realized the star-like connection of D1 phase winding, D2 phase winding and D3 phase winding.
In actual applications, as shown in Figure 3, Fig. 3 is the three-phase miniature transformer overall structure figure that the embodiment of the invention provides.301 is the iron core of three-phase miniature transformer among the figure, and 302 is the integrated coil of three-phase miniature transformer, and integrated coil 302 has consisted of primary of high voltage winding and the low-voltage secondary winding of three-phase miniature transformer.The concrete structure figure of the iron core 301 of three-phase miniature transformer as shown in Figure 4, the concrete structure figure of the integrated coil 302 of three-phase miniature transformer is as shown in Figure 5.
Need to prove that iron core assembly described in the present embodiment adopts cold-reduced silicon sheet, can reduce like this coercive force, core loss (iron loss) and magnetic aging.
In the technical scheme of the present invention armature winding adopt star-like or independent connection simple in structure, be convenient to terminal block, secondary winding equally also can be realized the single-phase independently-powered or star-like power supply of three-phase, and volume is little, and is simple in structure, practical and convenient.
Above-mentioned only is preferred embodiment of the present invention and institute's application technology principle, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses, and the variation that can expect easily or replacement all should be encompassed in protection scope of the present invention.
Claims (2)
1. a three-phase miniature transformer is characterized in that, comprises armature winding, secondary winding and iron core; Described armature winding is Y-connection or three phase windings independently, each phase line is connected with the neutral line through winding in this three phase winding, when the neutral line of described three phase windings does not link together, three phase windings are separate, when the neutral line of described three phase windings linked together, three phase windings consisted of star-like connection; Described secondary winding is Y-connection or three phase windings independently, and the connected mode of its output line is identical with armature winding.
2. three-phase transformer according to claim 1 is characterized in that, described iron core assembly adopts cold-reduced silicon sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210468935 CN103000349A (en) | 2012-11-19 | 2012-11-19 | Three-phase miniature transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210468935 CN103000349A (en) | 2012-11-19 | 2012-11-19 | Three-phase miniature transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103000349A true CN103000349A (en) | 2013-03-27 |
Family
ID=47928807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210468935 Pending CN103000349A (en) | 2012-11-19 | 2012-11-19 | Three-phase miniature transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103000349A (en) |
-
2012
- 2012-11-19 CN CN 201210468935 patent/CN103000349A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130327 |