CN203397879U

CN203397879U - Extended edge and triangular self-coupling transformer

Info

Publication number: CN203397879U
Application number: CN201320540675.6U
Authority: CN
Inventors: 黎明
Original assignee: KUNSHAN POWEREX POWER TECHNOLOGY Co Ltd
Current assignee: KUNSHAN POWEREX POWER TECHNOLOGY Co Ltd
Priority date: 2013-09-02
Filing date: 2013-09-02
Publication date: 2014-01-15
Anticipated expiration: 2023-09-02

Abstract

The utility model discloses an extended edge and triangular self-coupling transformer which comprises an iron core, a low-voltage side triangular winding and a high-voltage side extended edge winding, wherein the low-voltage side triangular winding is provided with a triangular circuit layout; a first end (a), a second end (b) and a third end (c) of the low-voltage side triangular winding are connected with a first extended edge winding (A), a second extended edge winding (B) and a third extended edge winding (C) of the high-voltage side extended edge winding respectively; further, the high-voltage side extended edge winding is provided with a star-shaped circuit layout. The extended edge and triangular self-coupling transformer is simple in structure and easy to manufacture and maintain; the problems of harmonic suppression of a self-coupling transformer and manufacturing and running costs of an isolation transformer can be solved.

Description

Extend-triangle autotransformer

Technical field

The utility model relates to a kind of three-phase transformer, and particularly a kind of winding is the three-phase transformer of extend-triangle connection, can be widely used in electrical network for power transformation, import equipment power supply coupling, new forms of energy power supply etc. field.

Background technology

All the time, autotransformer is with advantages such as its low cost of manufacture, running wastage are low, in mains supply conversion, import and export the places such as device power supply (DPS) coupling and play an important role.But, consult Fig. 1 a-Fig. 1 b, the winding of traditional 3-phase autotransformer adopts wye connection, from tapped mode, has limited it in the use that mains by harmonics is had to the place that suppresses requirement.

Along with popularizing of Switching Power Supply, frequency conversion, being widely used of rectifying installation, to mains by harmonics, disturb more and more serious, in order to solve harmonic pollution problem, people have to adopt another isolating transformer, consult Fig. 2 a-Fig. 2 b, this transformer adopting delta-delta connection or star-like-delta connection, can make electrical network cause 3 of main harm, 5, 7 inferior low-order harmonics are effectively controlled, but himself loss is large, increased operating cost, the energy day by day in short supply is caused to waste, and manufacturing cost is high, increased user's equipment investment burden.

Utility model content

In view of the deficiencies in the prior art, the purpose of this utility model is to provide a kind of extend-triangle autotransformer, and its harmonic wave that can effectively solve autotransformer suppresses problem, can also solve manufacture and the operating cost problem of isolating transformer simultaneously.

For realizing above-mentioned utility model object, the utility model has adopted following technical scheme:

A kind of extend-triangle autotransformer, comprise iron core, low-pressure side delta windings and prolongation limit, high-pressure side winding, described low-pressure side delta windings has delta network layout, and the first end of described low-pressure side delta windings, the second end and the 3rd end extend with first of prolongation limit, high-pressure side winding respectively, and limit winding, second extends limit winding and the 3rd prolongation limit winding is connected.

Further, prolongation limit, described high-pressure side winding has star circuit layout.

Further, described iron core comprises the iron core that three-phase three-limb silicon steel sheet, pentastyle silicon steel sheet or non-crystaline amorphous metal form.

Further, described low-pressure side delta windings and prolongation limit, high-pressure side winding are arranged in order from inside to outside on iron core.

Further, the first end of described low-pressure side delta windings, the second end and the 3rd end extend limit winding end with first of prolongation limit, high-pressure side winding respectively, the second prolongation limit winding end and the 3rd extends limit winding end and is connected.

Compared with prior art, the utility model at least tool has the following advantages: this extend-triangle autotransformer is simple in structure, be easy to manufacture and safeguard, and can effectively solve the harmonic wave inhibition problem of autotransformer, manufacture and the operating cost problem that the while can also solve isolating transformer.

Accompanying drawing explanation

Fig. 1 a is the structural representation of traditional 3-phase autotransformer;

Fig. 1 b is the equivalent circuit diagram of traditional 3-phase autotransformer;

Fig. 2 a is the structural representation of existing a kind of isolating transformer;

Fig. 2 b is the equivalent circuit diagram of existing a kind of isolating transformer;

Fig. 3 a is the structural representation of the utility model one preferred embodiment;

Fig. 3 b is the equivalent circuit diagram of the utility model one preferred embodiment;

Description of reference numerals: a1-low-pressure side delta windings first end, b1-low-pressure side delta windings the second end, c1-low-pressure side delta windings the 3rd end, first of prolongation limit, A1-high-pressure side winding extends limit winding, first of prolongation limit, B1-high-pressure side winding extends limit winding, first of prolongation limit, C1-high-pressure side winding extends limit winding, a2-low-pressure side delta windings first end, b2-low-pressure side delta windings the second end, c2-low-pressure side delta windings the 3rd end, first of prolongation limit, A2-high-pressure side winding extends limit winding, first of prolongation limit, B2-high-pressure side winding extends limit winding, first of prolongation limit, C2-high-pressure side winding extends limit winding, a-low-pressure side delta windings first end, b-low-pressure side delta windings the second end, c-low-pressure side delta windings the 3rd end, first of prolongation limit, A-high-pressure side winding extends limit winding, first of prolongation limit, B-high-pressure side winding extends limit winding, first of prolongation limit, C-high-pressure side winding extends limit winding.

Embodiment

Below in conjunction with accompanying drawing and a preferred embodiment, the technical solution of the utility model is further described.

What the present embodiment was related is a kind of extend-triangle autotransformer that extends connection based on triangle, and its low-pressure side inputing or outputing is delta connection, and high-pressure side is star connection.

Further, refer to Fig. 3 a-Fig. 3 b, this extend-triangle autotransformer comprises iron core, low-pressure side delta windings and prolongation limit, high-pressure side winding, wherein, described low-pressure side delta windings has delta network layout, and the first end a of described low-pressure side delta windings, the second end b extend with first of prolongation limit, high-pressure side winding respectively with the 3rd end c, and limit winding A, second extends limit winding B and the 3rd prolongation limit winding C is connected.

Further, the iron core that described iron core can select three-phase three-limb silicon steel sheet, pentastyle silicon steel sheet or non-crystaline amorphous metal to form, and be not limited to this.

Or, more intuitively, please again consult Fig. 3 b, the first end a of described low-pressure side delta windings, the second end b and the 3rd end c correspond respectively to the San Ge summit of delta network, and first of prolongation limit, described high-pressure side winding extends limit winding A end, the second prolongation limit winding B end and the 3rd extends limit winding C end and is connected with San Ge summit a, b, the c of this delta network respectively.

The harmonic wave that this extend-triangle autotransformer can effectively solve autotransformer suppresses problem, can also solve manufacture and the operating cost problem of isolating transformer simultaneously, has wide range of applications.

It is pointed out that above embodiment is only for illustrating content of the present utility model, in addition, the utility model also has other execution modes.But all employings are equal to replaces or technical scheme that equivalent deformation mode forms all drops in protection range of the present utility model.

Claims

1. an extend-triangle autotransformer, comprise iron core, low-pressure side delta windings and prolongation limit, high-pressure side winding, it is characterized in that, described low-pressure side delta windings has delta network layout, and the first end of described low-pressure side delta windings (a), the second end (b) and the 3rd end (c) extend with first of prolongation limit, high-pressure side winding respectively, and limit winding (A), second extends limit winding (B) and the 3rd prolongation limit winding (C) is connected.

2. extend-triangle autotransformer according to claim 1, is characterized in that, prolongation limit, described high-pressure side winding has star circuit layout.

3. extend-triangle autotransformer according to claim 1, is characterized in that, described iron core comprises the iron core that three-phase three-limb silicon steel sheet, pentastyle silicon steel sheet or non-crystaline amorphous metal form.

4. according to the extend-triangle autotransformer described in claim 1 or 3, it is characterized in that, described low-pressure side delta windings and prolongation limit, high-pressure side winding are arranged in order from inside to outside on iron core.

5. extend-triangle autotransformer according to claim 1, it is characterized in that, the first end of described low-pressure side delta windings (a), the second end (b) and the 3rd end (c) extend limit winding (A) end with first of prolongation limit, high-pressure side winding respectively, the second prolongation limit winding (B) end and the 3rd extends limit winding (C) end and is connected.