CN106300996A - Transformator electric energy two or three phase inversion process - Google Patents
Transformator electric energy two or three phase inversion process Download PDFInfo
- Publication number
- CN106300996A CN106300996A CN201610713247.7A CN201610713247A CN106300996A CN 106300996 A CN106300996 A CN 106300996A CN 201610713247 A CN201610713247 A CN 201610713247A CN 106300996 A CN106300996 A CN 106300996A
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- Prior art keywords
- phase
- electricity
- transformator
- transformer
- electric energy
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
- H02M5/14—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers for conversion between circuits of different phase number
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ac-Ac Conversion (AREA)
Abstract
The present invention relates to transformator electric energy two or three phase inversion process.By single-phase or two-phase electric energy is changed into three-phase electricity, present stage best mode is electronic power rectification inversion transformation technique, but rail traction power supply exists the feature that voltage pulsation is big, causes its dependability the highest.The biphase electricity of this kind of specific phase angular difference, by a road or two-way power supply, through over commutation and inversion, by controlling the biphase electricity that the equal phase angle difference of output amplitude is 60 ° or 90 °, through transformer action, is converted to the three-phase electricity of symmetry by the present invention.The present invention uses single-phase converter topological structure, controls complexity and is less than three-phase unsteady flow, and sampled signal also reduces, and is therefore more easily implemented control；Owing to adding power transformer in electrical energy form conversion process, therefore electrical isolation level is improved, and power transformer can also realize the effect of electric pressure conversion；Transformation and equal any two three-phase electric energies of amplitude that can realize single three-phase change.
Description
Technical field
The present invention relates to one and belong to transformator electric energy two-phase-three-phase converter technique scheme field, be specifically related to a kind of change
Depressor electric energy two-three phase inversion process.
Background technology
Existing power supply also exists a lot of single-phase electricity or biphase electricity, such as rail traction power supply etc., the most also
There is substantial amounts of threephase load, such as loads such as the communication of railway, signal, plumbing, ventilation, air-conditioning, maintenance.By single-phase or two
Phase electric energy is changed into three-phase electricity, and present stage best mode is electronic power rectification inversion transformation technique, but rail traction power supply is deposited
In the feature that voltage pulsation is big, cause its dependability the highest.Primary side is the transformator of star or delta connection,
Wherein during a phase ground connection, the most biphase access assignment is equal, the biphase electricity of 60 ° of phase angle time, or balancing transformer is at secondary side
Access the biphase electricity that phase angle difference is 90 °, it is possible to this two phase electricity is changed into three-phase electricity, improves the operation of conversion equipment simultaneously
Reliability, but the two phase electricity of special phase angle difference can only be changed into three-phase electricity by this technology, the most extensively by very during application
Big restriction.
Summary of the invention
It is an object of the invention to provide a kind of transformator electric energy two-three phase inversion process, solve in prior art and exist
Typical transformer two-three-phase be only used for the problem of two phase electricity of specific amplitude and phase angle, use this scheme can be by list
The biphase electricity of phase or arbitrarily phase angle is converted to the three-phase electric energy of symmetry.
The technical solution adopted in the present invention is:
Transformator electric energy two-three phase inversion process, it is characterised in that:
Realized by following steps:
By a road or two-way power supply, through over commutation and inversion, it it is 60 ° or 90 ° by controlling the equal phase angle difference of output amplitude
Biphase electricity, through transformer action, the biphase electricity of this kind of specific phase angular difference is converted to the three-phase electricity of symmetry.
For a road power supply, external power source forms the single phase poaer supply that two-way amplitude is equal, Qi Zhongyi by power taking transformator
Road connects single-phase rectifier inversion module, and an other road is connected directly to the input of two-three-phase transformer, and three-phase transformer exports
Termination threephase load.
For two-way power supply, external power source forms the single phase poaer supply that two-way amplitude is equal, warp simultaneously by power taking transformator
Cross single-phase rectifier inversion module, export the two-way single-phase electricity of corresponding phase angle, access the input of two-three-phase transformer, three phase transformations
Depressor output termination threephase load.
The invention have the advantages that
(1) using single-phase converter topological structure, control complexity and be less than three-phase unsteady flow, sampled signal also reduces, and is therefore more easy to
In realizing control；
(2) owing to adding power transformer in electrical energy form conversion process, therefore electrical isolation level is improved, and
Power transformer can also realize the effect of electric pressure conversion；
(3) transformation and the equal any two-three-phase electric energy of amplitude that can realize single-thee phase change.
Accompanying drawing explanation
Fig. 1 is single phase shift two-three-phase converter technique scheme elementary diagram；
Fig. 2 is two-track two-three-phase converter technique scheme elementary diagram mutually.
Fig. 3 is that transformator primary side delta windings two-three-phase electric energy converts connection principle.
Fig. 4 is that transformator primary side star winding two-three-phase electric energy converts connection principle.
Fig. 5 is inverse Scott Transformer two-three-phase variation wiring
In figure, 1. power taking single-phase transformer, 2. single-phase rectifier inversion module, 3. wave filter, 4. two or three phase inversion wiring commonly become
Depressor or inverse Scott Transformer, 5. threephase load, 6. measure and control loop, 7. ground connection, 8. Transformer Winding.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention will be described in detail.
Transformator electric energy two-three phase inversion process that the present invention relates to, is mainly used in rail traction power supply, utilizes electric power
Electronics single-phase rectifier inversion transformation technique, Jiang Yilu (scheme one) or two-way (scheme two) power supply, through over commutation and inversion, by control
The equal phase angle difference of output amplitude processed is the biphase electricity of 60 ° or 90 °, through transformer action, and biphase by this kind of specific phase angular difference
Electricity is converted to the three-phase electricity of symmetry.
Scheme one: as it is shown in figure 1, for a road power supply, it is equal that external power source forms two-way amplitude by power taking transformator
Single phase poaer supply, wherein one tunnel connect single-phase rectifier inversion module, an other road is connected directly to the input of two-three-phase transformer
End, three-phase transformer output termination threephase load.With in biphase one as reference, another phase utilizes hands over orthogonal commutation inversion module
Carrying out phase shift unsteady flow is 60 ° of specific phase angle or the single-phase electricity of 90 °, in input tranformer.
Scheme two: as in figure 2 it is shown, for two-way power supply, it is equal that external power source forms two-way amplitude by power taking transformator
Single phase poaer supply, simultaneously through single-phase rectifier inversion module, export the two-way single-phase electricity of corresponding phase angle, access two-three phase-change pressure
The input of device, three-phase transformer output termination threephase load.Commutation inversion is all carried out, the biphase quality of power supply of output by biphase
More preferably, phase angle difference is more accurate,
Fig. 3, Fig. 4, Fig. 5 are connection type and the principle that each transformator carries out two-three phase inversion respectively, for triangle or star
Shape wiring, wherein a phase ground connection.For inverse Scott Transformer, in Fig. 5, being made up of two single-phase transformers, one is two
Ground connection is needed at secondary side winding 1/3.
Main two technology of technical solution of the present invention are determination and transformator two-three phase inversion of biphase voltage phase difference
Principle.
Biphase voltage phase difference is realized by single-phase rectifier inversion module, and this module is permissible by the effect controlled
Export the alternating current of any amplitude, phase and frequency.In scheme one, inversion module controls the phase place of reference signal by gathering
Carry out phase shift on the phase basis of another road voltage signal thus obtain, thus realize the control to output phase place；Scheme two
Middle two-way single-phase rectifier and inversion realize the phase difference value of two-way voltage by setting the phase contrast of the reference signal of two-way.
Transformator two-three phase change wiring has three kinds of forms, and being respectively directed to primary side is triangle, star and this section inverse
Special structure transformer.
The principle of technical solution of the present invention is to utilize to hand over orthogonal Technics of Power Electronic Conversion to carry out voltage phase shift, thus carries out transformation
Device two-three phase inversion.It is that the voltage that equivalence applies on each winding of transformator is that transformator carries out the mechanism of two-three phase inversion
Symmetrical three-phase electricity.
For delta windings connection type, B phase ground connection, order,, the most each winding voltage
For:
On each winding, equivalence is applied for three-phase symmetric voltage.Being in like manner the transformator of star-star connection for primary side, B phase ground connection makes,, the most each winding voltage is:
Can obtain, on each winding of star, equivalence is applied for three-phase symmetric voltage (note: when using star-star connection, primary side neutral point is not
Energy ground connection).
Inverse Scott is the inverse transformation of Scott Transformer, and the condition that it uses is to input biphase quadrature voltage, and voltage
Amplitude is equal, and the reference point of outlet side is at the 1/3 of winding.
Present disclosure is not limited to cited by embodiment, and those of ordinary skill in the art are by reading description of the invention
And the conversion of any equivalence that technical solution of the present invention is taked, the claim being the present invention is contained.
Claims (3)
1. transformator electric energy two-three phase inversion process, it is characterised in that:
Realized by following steps:
By a road or two-way power supply, through over commutation and inversion, it it is 60 ° or 90 ° by controlling the equal phase angle difference of output amplitude
Biphase electricity, through transformer action, the biphase electricity of this kind of specific phase angular difference is converted to the three-phase electricity of symmetry.
Transformator electric energy two-three phase inversion process the most according to claim 1, it is characterised in that:
For a road power supply, external power source forms, by power taking transformator, the single phase poaer supply that two-way amplitude is equal, and wherein a road is even
Order commutating phase inversion module, an other road is connected directly to the input of two-three-phase transformer, three-phase transformer output termination
Threephase load.
Transformator electric energy two-three phase inversion process the most according to claim 1, it is characterised in that:
For two-way power supply, external power source forms, by power taking transformator, the single phase poaer supply that two-way amplitude is equal, simultaneously through single
Commutating phase inversion module, exports the two-way single-phase electricity of corresponding phase angle, accesses the input of two-three-phase transformer, three-phase transformer
Output termination threephase load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610713247.7A CN106300996A (en) | 2016-08-24 | 2016-08-24 | Transformator electric energy two or three phase inversion process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610713247.7A CN106300996A (en) | 2016-08-24 | 2016-08-24 | Transformator electric energy two or three phase inversion process |
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| CN201610713247.7A Pending CN106300996A (en) | 2016-08-24 | 2016-08-24 | Transformator electric energy two or three phase inversion process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109637791A (en) * | 2019-01-29 | 2019-04-16 | 重庆科新电气有限公司 | A kind of inverse Scott Transformer |
| WO2019212257A1 (en) * | 2018-05-02 | 2019-11-07 | 현대일렉트릭앤에너지시스템(주) | Power conversion apparatus having scott transformer |
| KR20190126718A (en) * | 2018-05-02 | 2019-11-12 | 현대일렉트릭앤에너지시스템(주) | Power converting apparatus having scott transformer |
| CN110649608A (en) * | 2019-11-08 | 2020-01-03 | 成都尚华电气有限公司 | System for converting single-phase power into three-phase power based on dual-power converter and three-phase transformer |
| CN114974839A (en) * | 2022-05-30 | 2022-08-30 | 重庆科新电气有限公司 | Special 27.5kV dry-type inverse Scott transformer for railway with increased angle ring |
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| US5109327A (en) * | 1990-04-10 | 1992-04-28 | Griffin Anthony J | Electronic system and method for supplying power to single-phase loads using a three-phase power supply |
| CN201528279U (en) * | 2009-10-13 | 2010-07-14 | 青岛经济技术开发区创统科技发展有限公司 | Alternating-current power unit changing single phase into three phases |
| CN105527517A (en) * | 2015-12-09 | 2016-04-27 | 浪潮电子信息产业股份有限公司 | EMC (electro magnetic compatibility) test method for power supply of high-power server |
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| US5109327A (en) * | 1990-04-10 | 1992-04-28 | Griffin Anthony J | Electronic system and method for supplying power to single-phase loads using a three-phase power supply |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019212257A1 (en) * | 2018-05-02 | 2019-11-07 | 현대일렉트릭앤에너지시스템(주) | Power conversion apparatus having scott transformer |
| KR20190126718A (en) * | 2018-05-02 | 2019-11-12 | 현대일렉트릭앤에너지시스템(주) | Power converting apparatus having scott transformer |
| CN111052588A (en) * | 2018-05-02 | 2020-04-21 | 现代电力与能源***株式会社 | Power conversion device with Scott transformer |
| KR102235397B1 (en) * | 2018-05-02 | 2021-04-05 | 현대일렉트릭앤에너지시스템(주) | Power converting apparatus having scott transformer |
| US11025171B2 (en) | 2018-05-02 | 2021-06-01 | Hyundai Electric & Energy Systems Co., Ltd. | Power conversion apparatus having Scott-T transformer |
| CN111052588B (en) * | 2018-05-02 | 2023-08-08 | 现代电力与能源***株式会社 | Power conversion device with Scott transformer |
| CN109637791A (en) * | 2019-01-29 | 2019-04-16 | 重庆科新电气有限公司 | A kind of inverse Scott Transformer |
| CN110649608A (en) * | 2019-11-08 | 2020-01-03 | 成都尚华电气有限公司 | System for converting single-phase power into three-phase power based on dual-power converter and three-phase transformer |
| CN114974839A (en) * | 2022-05-30 | 2022-08-30 | 重庆科新电气有限公司 | Special 27.5kV dry-type inverse Scott transformer for railway with increased angle ring |
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Application publication date: 20170104 |