CN101305428A - Multi-conductor cable for transmitting rectangular wave-shaped alternating current - Google Patents
Multi-conductor cable for transmitting rectangular wave-shaped alternating current Download PDFInfo
- Publication number
- CN101305428A CN101305428A CNA2006800418798A CN200680041879A CN101305428A CN 101305428 A CN101305428 A CN 101305428A CN A2006800418798 A CNA2006800418798 A CN A2006800418798A CN 200680041879 A CN200680041879 A CN 200680041879A CN 101305428 A CN101305428 A CN 101305428A
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- China
- Prior art keywords
- conductor
- cable
- aforementioned
- multiconductor cable
- described multiconductor
- 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.)
- Granted
Links
- 239000004020 conductor Substances 0.000 title claims abstract description 62
- 238000009413 insulation Methods 0.000 claims abstract description 14
- 239000004065 semiconductor Substances 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 230000005684 electric field Effects 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229920002457 flexible plastic Polymers 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 230000005855 radiation Effects 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000002500 effect on skin Effects 0.000 description 8
- 229920003023 plastic Polymers 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000005534 acoustic noise Effects 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/04—Concentric cables
Abstract
A multiconductor cable for transmitting alternating currents having an at least approximately rectangular waveform comprises a single-conductor cable (9) stranded into a two-conductor cable or a four-conductor cable. The single-conductor cable (9) has a thin, flexible inner conductor (1) and a thin, individual conductor-forming counter-conductor (4) which is arranged concentrically around the inner conductor (1). An insulation system (2, 3; 6, 7) is arranged between the inner conductor (1) and the counter conductor (4) or around the counter conductor. The advantage is thereby obtained from the coaxial structure of the multiconductor cable, wherein the respective inner conductor and the counter-conductor advantageously have exactly the same conductance. This achieves the best possible compensation of the radiation field.
Description
The present invention relates to a kind of multiconductor cable that is used to transmit the alternating current of square waveform according to claim 1 as described in the preamble.
The cable that carries out power transfer by the alternating current that has square waveform and have a high proportion of high order harmonic component thus also is applicable to the big monophase current of frequency of delivery greater than 50HZ.The target of this structure is the application under high current density, magnetic field and disagreeable noise that it can produce the heating of big heat and also can produce strong interference.
Must generation almost be to need this cable under the electric current of rectangle and the applicable cases that this electric current is flowed to the user for fear of conversion loss.For example this cable can be advantageously used for the connection between single-phase inverter and transformer.
The standard cable that is used for the known shielding of these applicable cases is generally used for conducting the electric current of 50 or 60Hz sine-shaped and that calculate according to known chart.When transmission rectangle electric current, current capacity must reduce with modifying factor, and is overheated to avoid cable.In most cases use the multicore cable have or do not have public shielding and public oversheath, as they usually use as motor terminals cable.
It is only helpful under the current conditions of lower frequency to use bigger cross section to dissipate with the compensation thermal power, because skin effect reduces physical cross-section widely under high order harmonic component and/or higher frequency.Utilize four conductor cable directed parallel phase conductors of standard to allow the restriction skin effect.The improvement that but this expense in the mill is big and the problem of EMV (electromagnetic compatibility) is brought is very little.The rectangle degree of current waveform is high more, and the EMV interference potential is just high more.This moment, spacing between power supply conductor (Vorleiter) and return conductors (Rueckleiter) and stranded number of times were conclusive for the intensity of magnetic radiation and to its compensation as well as possible, though with conductor apart under the very little measurement spacing.Normal cable with conventional stranded power supply conductor and return conductors is disadvantageous in the performance aspect the noise release in the high-frequency current zone.Opposite electric current by each single heart yearn causes that the repulsion of pulsation of twisted wire and this cause the acoustic jamming noise.
Task of the present invention provides a kind of conductor cable that starts described type, and it has low value and the highest possible heat loss through radiation aspect electromagnetic radiation, acoustic jamming, the skin effect.
Solve according to the feature of this task of the present invention according to claim 1.
Conclusive advantage is by producing according to the coaxial configuration of multiconductor cable of the present invention, and wherein each inner wire and pairing conductor advantageously have accurate identical electricity and lead.Realized the possible best compensation of radiation field like this.The restriction of the maximum cross section of inner wire is given by skin effect.Total cross section is realized by the directed parallel phase conductor.
Use has four stranded coaxial single conductor cables and is not favourable with the structure of public outer protection sheath, because be used for the design that the ratio of the surface of heat loss through radiation and conductors cross is more optimized thus.
Below the contrast accompanying drawing is described embodiments of the invention and other advantage in detail.Shown in the accompanying drawing:
Fig. 1 be according to the viewgraph of cross-section of a kind of four conductor cables of the present invention and
Fig. 2 is a kind of part viewgraph of cross-section of modification of a single single conductor cable of this two-conductor cable or four conductor cables.
Cable shown in Figure 1 is to design for transmitting the alternating current with approximate rectangular waveform specially.This private cable is used for the connection between DC chopper and transformer in the field of rail vehicle in the application of polymorphic type current system and they are to start the described basis that is characterized as.
This four conductor cables 10 have four cables that twist together mutually 9, reel around the stave 11 of central authorities in their spiralitys ground.This stave 11 supports and is advantageously made by heat resistant plastice as the centering of this cable 9.
Four single conductor cables 9 of this multiconductor cable 10 are same configuration.They respectively have fine rule that the inner wire 1 of flexibility of a fine rule and one arranges around inner wire 1 with one heart, by the pairing conductor 4 of some single conductors 4 ' form.Make conductor cable 10 have certain flexible by inner wire 1 and the pairing conductor 4 that uses this fine rule.If because high frequency makes that the center of inner wire can and be configured to hollow conductor with inner wire thus by the non electrically conductive material structure when conductor of inner most fine rule did not produce contribution owing to skin effect and to conductivity.
Be provided with double-deck insulation system between inner wire 1 and pairing conductor 4, it is made up of a heat-resisting flexible plastic layer 2 of extruding and a second layer 3.Both are cross-linking radiation ground structure advantageously in addition, that is their no longer fusings under higher temperature, as the situation under the thermoplasticity state.Thus electric insulation, may the time electric field filtering (passing through semiconductor), chemical stability, acoustic characteristic aspect or aspect mechanical strength, realize the surplus or the improvement of performance.
The single conductor 4 of the return conductors 4 of antipole ' surrounding layer 3 is arranged in parallel to each other equably.Their each copper twisted wire or analog and the conventional plastic insulation thing 4 that surrounds this copper twisted wire " formations by fine rule.This applies another insulation system that is made of a plastic layer 6 and another layer 7 above plastic insulation thing.These layers itself are sealed with the shielding 8 of a metal.Each uniconductor can be encapsulated in an oversheath 29 that is used for protecting uniconductor in addition.Common oversheath 12 that advantageously is made of wear-resistant plastic of four cable 9 usefulness keeps together in addition.
As already described, this multiconductor cable 10 is particularly useful for this transmission of rectangle electric current, because the acoustic noise that adopts this cable to produce is minimum and in addition skin effect is had best response, thereby be under the load condition at cable and under the situation of identical environment and load parameter, can keep lower temperature, this has effectively improved ageing properties, perhaps can select compact more cable under identical power delivery situation.
Fig. 2 shows a kind of cable 20 of the multiconductor cable that is not shown specifically, and wherein this multiconductor cable can be configured to four conductor cables with the cable among Fig. 1 similarly or also can only be configured to the two-conductor cable.Insulation system between inner wire 1 and pairing conductor 4 is by an inner semiconductor layer 22a herein, and a dielectric 22 and this dielectric semiconductor layer 23 of encirclement form.25, one dielectrics 26 of an inner semiconductor layer and an outer semiconductor layer 27 form exterior﹠insulation﹠finish﹠systems.These semiconductor layers can be made of semiconductive belt, graphite linings or extruded material respectively.
Around this external insulation or the conductive layer that is made of wire or belt that also applies a copper cash braid 28 or arrange around inner wire 1 with one heart around semiconductor layer 27 or rather, it is used for electric field shielding.On this screen, also apply a sheath of sealing separately 29.
Two this cables 20 can twist together and allow approximately to carry double electric current now mutually, under the situation of rectangle current waveform skin effect are reduced thus.If adopted four this stranded cables 20 could further improve conductive surface and cooling surface and this external given circular diameter situation under also improve transmission capacity.
As described, thisly can also make with additional layer, also can under higher voltage, use guaranteeing according to conductor cable of the present invention.On the outer conductor on the conductor, in the arranged concentric of antipole and the semiconductor layer in shielding can allow to form distributing more uniformly of electric field.
This is correspondingly realized by semiconductor layer of extruding or the semiconductive belt that applies.
In addition, external shield can realize to the control of protection electromotive force with to the shielding of electric field.The structure that forms has big conductive surface, although electric current still is distributed on a plurality of sub-conductors; This has reduced the skin effect of high order harmonic component.Concentric structure also makes the outside radiation in magnetic field be reduced to open stranded of minimum level and cable, that is does not have oversheath 12, for thermal radiation provides bigger surface and littler transition resistance.
Another advantage is to launch by the concentric power that this structure realizes, it is owing to bigger surface obtains best support.Especially, the minimum force of unit mass also produces minimum acceleration and minimum displacement amplitude, and this appears it conversely again and is under the lower noise level.Acoustic characteristic is extremely conclusive under the situation of rectangle electric current, because high order harmonic component causes the exciting of noise emission of interference.
In addition, this the coaxial two-conductor cable by being used for single phase system or the geometry of four conductor cables, formed the electromagnetic field of reverse symmetry, they compensate in fact mutually and therefore just can disturb under the situation that does not have shielding and are deployed into tinily in the environment nearby.It is not the position that clearly limits that the geometry of four stranded cables produces a kind of of this structure, and it can advantageously solve and guarantee the symmetry of this geometry by a central member.
Claims (11)
1. be used to transmit the multiconductor cable of alternating current with approximate rectangular at least waveform, comprise the single conductor cable (9) that twists together mutually, it is characterized in that, single conductor cable (9) is twisted into two-conductor cable or four conductor cables and has the inner wire (1) of the flexibility of a fine rule respectively and pairing conductor (4) fine rule that one is arranged around inner wire (1) with one heart, that formed by some single conductors, and between inner wire (1) and pairing conductor (4) or surround latter ground and respectively be provided with an insulation system (2,3; 6,7).
2. according to the described multiconductor cable of claim 1, it is characterized in that insulation system (2,3; 6,7) respectively has a heat-resisting flexible plastic layer (2,6) of extruding.
3. according to claim 1 or 2 described multiconductor cables, it is characterized in that inner wire (1) and pairing conductor (4) design to lead by the approximately uniform electricity of electric current.
4. according to described multiconductor cable one of in the aforementioned claim 1 to 3, it is characterized in that, the stave (11) that has central authorities in the situation of using four conductor cables is used for centering around the stranded single conductor cable (9) of this stave, and wherein this stave (11) is made by heat-resisting flexible plastic.
5. according to described multiconductor cable one of in the aforementioned claim 1 to 4, it is characterized in that insulation system (2,3; 6,7) be double-layer structural.
6. according to described multiconductor cable one of in the aforementioned claim 1 to 4, it is characterized in that insulation system respectively is provided with an inner semiconductor layer (22a), a dielectric (22) and an outer semiconductor layer (23).
7. according to described multiconductor cable one of in the aforementioned claim 1 to 6, it is characterized in that, at exterior﹠insulation﹠finish﹠systems (25,26,27) outside applies the concentric conductive layer that is made of wire or metal tape of a copper cash braid (28) or and inner wire (1), and it is used for electric field shielding.
8. according to described multiconductor cable one of in the aforementioned claim 1 to 7, it is characterized in that each cable is sealed by oversheath (29).
9. according to described multiconductor cable one of in the aforementioned claim 1 to 8, it is characterized in that, apply around stranded many conductors by the copper cash braid or by the public shielding (13) that wire or belt constitute.
10. according to described multiconductor cable one of in the aforementioned claim 1 to 8, it is characterized in that, not only apply a single conductor screen (8) but also apply a public shielding (13).
11. according to described multiconductor cable one of in the aforementioned claim 1 to 9,, it is characterized in that apply a public oversheath (10), it keeps together two or four cables.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH01812/05 | 2005-11-11 | ||
| CH01812/05A CH698074B1 (en) | 2005-11-11 | 2005-11-11 | Multi-conductor cable for transmitting rectangular extending alternating currents. |
| PCT/EP2006/010775 WO2007054325A1 (en) | 2005-11-11 | 2006-11-10 | Multi-conductor cable for the transmission of alternating currents with a square-wave profile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101305428A true CN101305428A (en) | 2008-11-12 |
| CN101305428B CN101305428B (en) | 2013-04-24 |
Family
ID=37648389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800418798A Expired - Fee Related CN101305428B (en) | 2005-11-11 | 2006-11-10 | Multi-conductor cable for transmitting rectangular wave-shaped alternating current |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1946334A1 (en) |
| KR (1) | KR20080066034A (en) |
| CN (1) | CN101305428B (en) |
| CH (1) | CH698074B1 (en) |
| WO (1) | WO2007054325A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107808711A (en) * | 2017-11-13 | 2018-03-16 | 国网湖南省电力有限公司 | A kind of transformer synthesis tests special test cable |
| CN110475721A (en) * | 2017-03-08 | 2019-11-19 | 赛峰航空器发动机 | The electric assembly of spaceship is pushed on the periastral track with magnetic field |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101251980B1 (en) * | 2011-04-20 | 2013-04-08 | 엘에스전선 주식회사 | Complex coaxial cable having united plural coaxial cable |
| WO2013052611A1 (en) * | 2011-10-04 | 2013-04-11 | Lake Region Manufacturing, Inc. D/B/A | Multiconductor or multipolar guidewire |
| CH709972B1 (en) | 2014-08-11 | 2018-12-14 | Studer Christoph | Electrical cable. |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2067451U (en) * | 1990-06-27 | 1990-12-12 | 王松田 | Control cable for explosive environment |
| US5122622A (en) * | 1990-02-13 | 1992-06-16 | Siemens Aktiengesellschaft | Electrical cable having a bearing part and two concentrically arranged conductors |
| CN1108789A (en) * | 1993-09-21 | 1995-09-20 | 阿尔卡塔尔电缆公司 | Cable insulation structure |
| CN2416574Y (en) * | 2000-03-28 | 2001-01-24 | 国营扬州市曙光电缆厂 | Non-halogen low-smoke flameproof electric cable |
| CN1571075A (en) * | 2003-07-23 | 2005-01-26 | 新疆特变电工股份有限公司 | A double winding cable for electromagnetic induction device |
| CN1643623A (en) * | 2002-04-03 | 2005-07-20 | 斯塔德电信电缆股份公司 | Three-conductor cable |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE471379A (en) * | 1941-02-27 |
-
2005
- 2005-11-11 CH CH01812/05A patent/CH698074B1/en unknown
-
2006
- 2006-11-10 WO PCT/EP2006/010775 patent/WO2007054325A1/en active Application Filing
- 2006-11-10 CN CN2006800418798A patent/CN101305428B/en not_active Expired - Fee Related
- 2006-11-10 KR KR1020087011359A patent/KR20080066034A/en not_active Application Discontinuation
- 2006-11-10 EP EP06818452A patent/EP1946334A1/en not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5122622A (en) * | 1990-02-13 | 1992-06-16 | Siemens Aktiengesellschaft | Electrical cable having a bearing part and two concentrically arranged conductors |
| CN2067451U (en) * | 1990-06-27 | 1990-12-12 | 王松田 | Control cable for explosive environment |
| CN1108789A (en) * | 1993-09-21 | 1995-09-20 | 阿尔卡塔尔电缆公司 | Cable insulation structure |
| CN2416574Y (en) * | 2000-03-28 | 2001-01-24 | 国营扬州市曙光电缆厂 | Non-halogen low-smoke flameproof electric cable |
| CN1643623A (en) * | 2002-04-03 | 2005-07-20 | 斯塔德电信电缆股份公司 | Three-conductor cable |
| CN1571075A (en) * | 2003-07-23 | 2005-01-26 | 新疆特变电工股份有限公司 | A double winding cable for electromagnetic induction device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110475721A (en) * | 2017-03-08 | 2019-11-19 | 赛峰航空器发动机 | The electric assembly of spaceship is pushed on the periastral track with magnetic field |
| CN107808711A (en) * | 2017-11-13 | 2018-03-16 | 国网湖南省电力有限公司 | A kind of transformer synthesis tests special test cable |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20080066034A (en) | 2008-07-15 |
| EP1946334A1 (en) | 2008-07-23 |
| CN101305428B (en) | 2013-04-24 |
| CH698074B1 (en) | 2009-05-15 |
| WO2007054325A1 (en) | 2007-05-18 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20161110 |