CN208889452U - A kind of energy-efficient auto-transformer of Low ESR AT - Google Patents

Abstract

The utility model discloses a kind of energy-efficient auto-transformers of Low ESR AT, A1 winding, B2 winding, A3 winding and B4 winding are arranged on its first column, B1 winding, A2 winding, B3 winding and A4 winding are covered on second column, one end concatenation coil, which is drawn, on B4 winding is used as output end B, a terminal connecting zero line on B1 winding；One end common winding, which is drawn, on A4 winding is used as output terminals A, and one flanks zero curve on A1 winding.The size of current that the utility model is utilized in auto-transformer series coil and public coil is equal, contrary and auto-transformer low impedance characteristic, it forces locomotive to return electric current and flows back to traction substation by just presenting conducting wire, the symmetry of power supply system current distribution is improved, mitigating the magnetic induction on communication line influences；Using contact net and positive feedback conducting wire voltage-to-ground polarity on the contrary, improving power supply system voltage's distribiuting symmetry, inhibit to influence the electric induction of communication line.

Description

A kind of energy-efficient auto-transformer of Low ESR AT

Technical field

The utility model relates to transformer technology field more particularly to a kind of energy-efficient self coupling transformations of Low ESR AT Device.

Background technique

Conventional auto-transformer is used primarily in high-voltage electric power system, it is connected to two little power grids of voltage phase difference Together, it can be used as general buck or boost transformer.But conventional auto-transformer is not able to satisfy in rail traction route The railway operation condition of the short-circuit frequency of its high overload, height, low-impedance requirement and " harshness ".

Utility model content

In view of the above deficiencies, the technical problem to be solved by the utility model is to provide a kind of impedance more low transmission efficiency Higher AT can meet the capability of overload requirement of railway traction transformer, resistance to shorting with energy saving auto-transformer, the transformer Capability Requirement and special resistance requirements, unique structure, superior performance.

In order to solve the above technical problems, the technical solution of the utility model is:

The energy-efficient auto-transformer of a kind of Low ESR AT, comprising: concatenation coil, the concatenation coil are divided into four Point, it is wound in B1 winding, B2 winding, B3 winding and B4 winding respectively；It is described concatenation coil serial connection sequence be B4 winding, B2 around Group, B3 winding and B1 winding, wherein concatenation coil described in the other end draws the output end B as the transformer on B4 winding, Concatenation coil described in the other end connects zero curve on B1 winding；Common winding, the common winding are divided into four parts, are wound in A1 respectively Winding, A2 winding, A3 winding and A4 winding；The serial connection sequence of the common winding be A4 winding, A2 group, A3 winding and A1 around Group, wherein common winding described in the other end draws the output terminals A as the transformer, other side institute on A1 winding on A4 winding It states common winding and connects zero curve；The iron core of single frame dual beam configuration, the iron core are in hollow；The iron core includes the first column and second Column, is successively arranged A1 winding, B2 winding, A3 winding and B4 winding on first column from outside to inside, from outer on second column B1 winding, A2 winding, B3 winding and A4 winding are successively arranged to interior.

Preferred embodiment is B1 winding and A2 winding, B3 winding and A4 winding, B4 winding and A3 winding and B2 winding and A1 Winding forms four leakage field groups；By adjusting coil width to leakage field airway distance between thickness and leakage field group, keep four sets of coils whole Suit, packaging clearance 1mm.

Preferred embodiment is that the concatenation coil and/or the common winding are led using the combination transposition of HQQN-0.6 type self-adhesion Line.

Preferred embodiment is that the concatenation coil and/or the common winding are in such a way that single-screw and end are evened up Winding.

After adopting the above technical scheme, the beneficial effects of the utility model are:

Due to the energy-efficient auto-transformer of Low ESR AT of the utility model, including concatenation coil, common winding and The iron core of single frame dual beam configuration, wherein iron core includes the first column and the second column, be successively arranged on the first column from outside to inside A1 winding, B2 winding, A3 winding and B4 winding are successively arranged B1 winding, A2 winding, B3 winding and A4 winding on the second column from outside to inside；Its The serial connection sequence of middle concatenation coil is B4 winding, B2 winding, B3 winding and B1 winding, and other end concatenation coil is drawn on B4 winding Zero curve is connect as other end concatenation coil on output end B, the B1 winding of transformer；Wherein the serial connection sequence of common winding be A4 around Group, A2 group, A3 winding and A1 winding, other end common winding draws the output terminals A as transformer on A4 winding, on A1 winding Other side common winding connects zero curve.As it can be seen that the electricity in auto-transformer series coil and public coil is utilized in the utility model Equal in magnitude, contrary and auto-transformer low impedance characteristic is flowed, forces locomotive to return electric current and is flowed back to by just presenting conducting wire Traction substation, so that the symmetry of power supply system current distribution is improved, to mitigate the magnetic induction influence on communication line；It utilizes Contact net and the positive feedback opposite polarity feature of conducting wire voltage-to-ground, improve the symmetry of power supply system voltage's distribiuting, inhibit to logical Believe that the electric induction of route influences, to realize anti-tampering effect.

Due to B1 winding and A2 winding, B3 winding and A4 winding, B4 winding and A3 winding and B2 winding and A1 winding shape At four leakage field groups；By adjusting coil width to leakage field airway distance between thickness and leakage field group, make four sets of coils integral assembling, covers Fill gap 1mm, it is ensured that transformer impedance is lower, more efficient；Low ESR requirement is met, the auxiliary phase size of coil is small；Each pair of leakage In magnetic group, equal turn numbers, electric current reduces supplementary transformer loss, improves coil on the contrary, ampere-turn equilibrium, leakage field are cancelled out each other Anti-short circuit capability.

Since concatenation coil and/or common winding use HQQN-0.6 type self-adhesion combined shifting lead；Conducting wire is at high temperature Multiple conducting wires are from sticking to one, and mechanical strength is big, and solid conductor width-thickness ratio is small, and yield strength is greater than 180, impact resistance.

Since concatenation coil and/or common winding are wound in such a way that single-screw and end are evened up；Make coil consolidation Degree is strong, non-loosening, and insulating element is dried by densification process, shrinks small, every column coil integral assembling technique.

Detailed description of the invention

Fig. 1 is the coil distribution schematic diagram of the energy-efficient auto-transformer of the utility model Low ESR AT；

Fig. 2 is the coil connection schematic diagram of the energy-efficient auto-transformer of the utility model Low ESR AT；

In figure: the first column of 1-, the second column of 2-.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

Related A, B, first and second below are for convenient for distinguishing, and description is convenient, without substantive significance.

As Fig. 1 and Fig. 2 jointly shown in, a kind of energy-efficient auto-transformer of Low ESR AT, comprising:

Coil is concatenated, preferably uses HQQN-0.6 type self-adhesion combined shifting lead in this example, more at high temperature, the conducting wire Conducting wire is from sticking to one, and mechanical strength is big, and solid conductor width-thickness ratio is small, and yield strength is greater than 180, impact resistance；Concatenate coil point At four parts, it is wound in B1 winding, B2 winding, B3 winding and B4 winding respectively, it is preferred to use what single-screw and end were evened up Mode is wound, and keeps the coil degree of packing strong, non-loosening, and insulating element is dried by densification process, and contraction is small, and every column coil integrally covers Dress technique.The serial connection sequence for concatenating coil is B4 winding, B2 winding, B3 winding and B1 winding, wherein other end string on B4 winding Wiring circle, which is drawn, meets zero curve O as other end concatenation coil on output end B, the B1 winding of transformer.

Common winding preferably uses HQQN-0.6 type self-adhesion combined shifting lead in this example, and ibid, the conducting wire is at high temperature Multiple conducting wires are from sticking to one, and mechanical strength is big, and solid conductor width-thickness ratio is small, and yield strength is greatly with 180, impact resistance；Common wire Circle is divided into four parts, is wound in A1 winding, A2 winding, A3 winding and A4 winding respectively and single-screw and end is preferably used to even up The mode of side is wound in, and keeps the coil degree of packing strong, non-loosening, and insulating element is dried by densification process, shrinks small, every column coil Integral assembling technique.The serial connection sequence of common winding be A4 winding, A2 group, A3 winding and A1 winding, it is wherein another on A4 winding Common winding is held to draw the output terminals A as transformer, other side common winding meets zero curve O on A1 winding.

The iron core of single frame dual beam configuration, iron core are in hollow, and iron core includes the first column 1 and the second column 2, on the first column 1 from It is outer to be successively arranged A1 winding, B2 winding, A3 winding and B4 winding in, it is successively arranged B1 winding, A2 from outside to inside on the second column 2 Winding, B3 winding and A4 winding.

In the utility model: B1 winding and A2 winding, B3 winding and A4 winding, B4 winding and A3 winding and B2 winding and A1 winding forms four leakage field groups, and by adjusting coil width to leakage field airway distance between thickness and leakage field group, four sets of coils are whole Suit, packaging clearance 1mm, it is ensured that transformer impedance is lower, more efficient；Meet Low ESR requirement, the auxiliary phase size of coil is small；Often To in leakage field group, equal turn numbers, electric current reduces supplementary transformer loss, improves on the contrary, ampere-turn equilibrium, leakage field are cancelled out each other Coil anti-short circuit capability, transformer are energy-efficient.

As Fig. 1 and Fig. 2 jointly shown in, the electricity in auto-transformer series coil and public coil is utilized in the utility model Equal in magnitude, contrary and auto-transformer low impedance characteristic is flowed, forces locomotive to return electric current and is flowed back to by just presenting conducting wire Traction substation, so that the symmetry of power supply system current distribution is improved, to mitigate the magnetic induction influence on communication line；It utilizes Contact net and the positive feedback opposite polarity feature of conducting wire voltage-to-ground, improve the symmetry of power supply system voltage's distribiuting, inhibit to logical Believe that the electric induction of route influences, to realize anti-tampering effect.

In order to clearer, beneficial effect acquired by the utility model provides following table:

Following table is that the utility model declines 28.5% compared with standard TB/T2888-2010 no-load loss, under load loss Drop 23.5%, no-load current decline 73%, impedance reduces by 48%, improves transformer efficiency of transmission.

The preferred embodiment of the utility model described above, is not intended to limit the utility model, all practical at this Made any modification within novel spirit and principle, etc. the energy-efficient auto-transformer configuration of same Low ESR AT Improve etc., it should be included within the scope of protection of this utility model.

Claims (4)

1. a kind of energy-efficient auto-transformer of Low ESR AT characterized by comprising

Coil is concatenated, the concatenation coil is divided into four parts, is wound in B1 winding, B2 winding, B3 winding and B4 winding respectively；Institute The serial connection sequence for stating concatenation coil is B4 winding, B2 winding, B3 winding and B1 winding, is wherein concatenated described in the other end on B4 winding Coil, which is drawn, connects zero curve as concatenation coil described in the other end on output end B, the B1 winding of the transformer；

Common winding, the common winding are divided into four parts, are wound in A1 winding, A2 winding, A3 winding and A4 winding respectively；Institute The serial connection sequence for stating common winding is A4 winding, A2 group, A3 winding and A1 winding, wherein common wire described in the other end on A4 winding Circle draws the output terminals A as the transformer, and common winding described in the other side connects zero curve on A1 winding；

The iron core of single frame dual beam configuration, the iron core are in hollow；The iron core includes the first column and the second column, first column On be successively arranged A1 winding, B2 winding, A3 winding and B4 winding from outside to inside, be successively arranged B1 from outside to inside on second column Winding, A2 winding, B3 winding and A4 winding.

2. the energy-efficient auto-transformer of Low ESR AT according to claim 1, which is characterized in that B1 winding and A2 around Group, B3 winding and A4 winding, B4 winding and A3 winding and B2 winding and A1 winding form four leakage field groups；By adjusting coil Width makes four sets of coils integral assembling, packaging clearance 1mm to leakage field airway distance between thickness and leakage field group.

3. the energy-efficient auto-transformer of Low ESR AT according to claim 1, which is characterized in that the concatenation coil And/or the common winding uses HQQN-0.6 type self-adhesion combined shifting lead.

4. the energy-efficient auto-transformer of Low ESR AT according to claim 1, which is characterized in that the concatenation coil And/or the common winding is wound in such a way that single-screw and end are evened up.