CN2286337Y - Three-phase input single-phase output voltage transformer - Google Patents
Three-phase input single-phase output voltage transformer Download PDFInfo
- Publication number
- CN2286337Y CN2286337Y CN 96236465 CN96236465U CN2286337Y CN 2286337 Y CN2286337 Y CN 2286337Y CN 96236465 CN96236465 CN 96236465 CN 96236465 U CN96236465 U CN 96236465U CN 2286337 Y CN2286337 Y CN 2286337Y
- Authority
- CN
- China
- Prior art keywords
- phase
- alternating current
- phase alternating
- primary side
- magnetic field
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a three-phase input single-phase output voltage transformer, comprising an iron core, three primary side windings and an auxiliary side winding. The primary side windings and the auxiliary side winding are distributed in the corresponding groove of the iron core, the shaft line of the three primary side windings are successively form a 120 DEG electrical angle in space, and the primary side windings are switched on a three-phase alternating current. The utility model relates to a novel transformer, which adopts a rotational magnetic field as a primary magnetic field. Under the condition of the primary side three phase load balance, the three phase alternating current can be converted into a single phase alternating current in a same frequency, and the utility model is generally suitable for the situations where the power supply is a three phase alternating current and the load is a single phase alternating current.
Description
The utility model relates to a kind of transformer.
Common transformer all is the form of the single-phase or three phase transformation three-phases of single-phase change.The tractive power supply system of the electrified railway of industrial frequency AC, its power supply is a three-phase alternating current, load then is a single-phase alternating current, its essence of single-phase electricity that electric railway is used is that the phase-splitting segmentation of three-phase electricity is used, and during the electric locomotive operation, every mistake " electric phase-splitting " all will be moved back level in advance, then open main circuit breaker, slip over " electric phase-splitting " then, closed again main circuit breaker after treating over advances level again.Manual operation is very loaded down with trivial details, solution to this problem is: establish Pang on ground and complicated phase-splitting automatic transfer equipment or establish recognition device and automated operator and the related device of crossing phase-splitting automatically on locomotive, but investment is big, technical merit requires high, the reliability requirement height, need establish the professional and safeguard meticulously etc. to give thus and use, safeguard and bring many practical problems and inconvenience, be the technical barrier that presses for solution for a long time.
The purpose of this utility model is the transformer that a kind of three-phase of design is imported single-phase output, as the traction transformer of electrified railway power supply, fundamentally solves " electric phase-splitting " problem in the traction power supply.
Technical solution of the present utility model is: a kind of three-phase is imported the transformer of single-phase output, an iron core, three former limit windings are arranged, with a secondary winding, former limit winding and secondary winding are distributed in the corresponding groove of iron core, the axis plane of three the former limit windings 120 ° of electrical degrees of being separated by successively in the space, former limit winding is connected the three-phase alternating current of symmetry, and synthetic rotating magnetic field is the main field of transformer.
The utility model is a kind of novel transformer, and it is to be main field with the rotating magnetic field.Under the precondition of former limit three-phrase burden balance, three-phase alternating current is become the single-phase alternating current of same frequency, it generally is suitable for power supply be that three-phase alternating current loads then is the applications needs of single-phase alternating current, the utility model is as traction transformer, be transported on the contact line all is synchronous single-phase alternating current, " electric phase-splitting " cancelled naturally at tractive power supply system, and relevant issues are declared its own bankruptcy.Because it is static transformer, need not control, conversion is not safe and reliable to operation.Electric railway does not have " electric phase-splitting ", it is great benefiting thus, can improve average speed and directly increase transport benefits, can alleviate crew member's labour intensity, simplify the favourable safety in production of operation, can simplify the structure of traction substation and contact line, simplify design, make things convenient for operation maintenance, increase the benefit.
Describe the utility model principle in detail below in conjunction with accompanying drawing.
Accompanying drawing is the utility model structural principle schematic diagram
Three-phase is imported single-phase output transformer, an iron core 1 is arranged, three former limit windings 2 and a secondary winding 3, former limit winding 2 is distributed in the corresponding groove of iron core 1 with secondary winding 3, three former limit windings are by A-X, B-Y, the C-Z three-phase coil is formed, its axis 120 ° of electrical degrees of spatially being separated by successively, and press A, Z, B, X, C, the sequence arrangement of Y, three-phase coil can be Y connection or delta connection, when feeding symmetrical three-phase alternating current, promptly amplitude equates altogether, 120 ° of electrical degrees of mutual deviation on time phase, when the A phase current is positive maximum Im, B, the C phase current should be-0.5Im.If regulation: electric current is timing, electric current flows into from head end to be represented with , flows out from tail end and represents with Θ; Then direction was opposite when electric current was negative, according to right-hand screw rule as can be known, the resultant magnetic field direction that three phase windings produce is secondary magnetic field from top to bottom, three phase windings are made of three single-phase windings, A, B, the magnetic field pointwise addition that three single-phase windings of C produce just obtains the resultant magnetic field of three-phase winding, the magnetic field of single-phase winding is an impulsive magnetic field, the magnetic field of three phase windings but is rotating magnetic field, the three-phase resultant magnetic field is at any instantaneous constant amplitude that keeping, rotating magnetic field is cut single-phase winding, in single-phase winding, produce induced potential, the single-phase sine wave alternating current of secondary winding 3 outputs.
More than device can be regarded as the static single-phase alternator with the three-phase alternating current excitation.Owing to be static, so its version not only can be garden shape, also can be other form.
Claims (1)
1, a kind of three-phase is imported the transformer of single-phase output, an iron core (1), three former limit windings (2) and a secondary winding (3) are arranged, it is characterized in that: former limit winding (2) and secondary winding (3) are distributed in the corresponding groove of iron core (1), the axis of three former limit windings (2) the 120 ° of electrical degrees of being separated by successively in the space, former limit winding (2) is connected the three-phase alternating current of symmetry, and synthetic rotating magnetic field is the main field of transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96236465 CN2286337Y (en) | 1996-12-04 | 1996-12-04 | Three-phase input single-phase output voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96236465 CN2286337Y (en) | 1996-12-04 | 1996-12-04 | Three-phase input single-phase output voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2286337Y true CN2286337Y (en) | 1998-07-15 |
Family
ID=33912283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96236465 Expired - Fee Related CN2286337Y (en) | 1996-12-04 | 1996-12-04 | Three-phase input single-phase output voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2286337Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101083167B (en) * | 2006-05-31 | 2010-07-14 | 中山市华星电源科技有限公司 | Novel structure transformer |
| CN105914022A (en) * | 2016-06-22 | 2016-08-31 | 济宁学院 | Separating type transformer capable of transforming three phases into single phase |
| CN109391041A (en) * | 2018-12-06 | 2019-02-26 | 国网辽宁省电力有限公司鞍山供电公司 | Complete period alternation magnetic flux leakage reclaiming type power supply device applied to air reactor |
| CN113285651A (en) * | 2021-05-25 | 2021-08-20 | 哈尔滨理工大学 | Device and method for converting multi-phase power supply into single-phase power supply |
-
1996
- 1996-12-04 CN CN 96236465 patent/CN2286337Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101083167B (en) * | 2006-05-31 | 2010-07-14 | 中山市华星电源科技有限公司 | Novel structure transformer |
| CN105914022A (en) * | 2016-06-22 | 2016-08-31 | 济宁学院 | Separating type transformer capable of transforming three phases into single phase |
| CN105914022B (en) * | 2016-06-22 | 2018-06-05 | 济宁学院 | A kind of single-phase transformer of isolated three phase transformation |
| CN109391041A (en) * | 2018-12-06 | 2019-02-26 | 国网辽宁省电力有限公司鞍山供电公司 | Complete period alternation magnetic flux leakage reclaiming type power supply device applied to air reactor |
| CN109391041B (en) * | 2018-12-06 | 2023-10-20 | 国网辽宁省电力有限公司鞍山供电公司 | Full-period alternating leakage magnetic field recovery type power supply device applied to air-core reactor |
| CN113285651A (en) * | 2021-05-25 | 2021-08-20 | 哈尔滨理工大学 | Device and method for converting multi-phase power supply into single-phase power supply |
| CN113285651B (en) * | 2021-05-25 | 2023-04-25 | 哈尔滨理工大学 | Device and method for converting multiphase power supply into single-phase power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |