CN110415874A - A kind of anti-frequency converter insulated electric conductor - Google Patents
A kind of anti-frequency converter insulated electric conductor Download PDFInfo
- Publication number
- CN110415874A CN110415874A CN201910521774.1A CN201910521774A CN110415874A CN 110415874 A CN110415874 A CN 110415874A CN 201910521774 A CN201910521774 A CN 201910521774A CN 110415874 A CN110415874 A CN 110415874A
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- China
- Prior art keywords
- conductor
- insulated electric
- resin layer
- electric conductor
- frequency converter
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/026—Alloys based on copper
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/42—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes polyesters; polyethers; polyacetals
- H01B3/427—Polyethers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/0009—Details relating to the conductive cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
- H01B7/0275—Disposition of insulation comprising one or more extruded layers of insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/08—Flat or ribbon cables
Abstract
The invention discloses a kind of anti-frequency converter insulated electric conductor, aim to solve the problem that existing anti-frequency converter surge insulated electric conductor can only be thickened by physics to enhance product performance, thus the technical issues of making insulated electric conductor not meet partial electric device miniaturization and lightweight requirements；The insulated electric conductor has at least one layer of extrusion coated with resin layer in the periphery of conductor, and the conductor is alloy copper conductor, and the cross sectional shape of the conductor is rectangle or circle, and the length-width ratio of the rectangular section conductor is 1.5-8.0；The one-sided thickness for squeezing out coated with resin layer is 40-110 μm, and the extrusion coated with resin layer is greater than 200MPa in 23 DEG C of tensile modulus of elasticity, and the relative dielectric constant for squeezing out coated with resin layer is 2.0-5.0 at 25 DEG C.Its thickness can be reduced while guaranteeing insulated electric conductor performance by the technical solution, it is made to have the requirement such as the property taken and high availability.
Description
Technical field
The invention belongs to the technical fields of wire and cable production, and in particular to a kind of anti-frequency converter insulated electric conductor.
Background technique
Frequency converter is mounted on many electrical equipments extensively as effective variable velocity control device, and frequency converter is with number
KHz~tens of kHz are converted, these corresponding pulses can generate surge voltage, and there are following phenomenons for frequency converter surge, i.e.,
It is reflected at the beginning for the wiring that the discontinuity point of its transmission system internal impedance is for example connected or terminal etc., the result is that generating
It is applied with 2 times of voltage for being up to frequency converter output voltage.The output generated especially with the high speeds conversion element such as IGBT
The voltage gradient of pulse is high, so that even if connecting cable shortens, surge voltage is also high, and then the electricity as caused by the connecting cable
Pressure decaying is also small, as a result, generating nearly 2 times of the voltage of frequency converter output voltage.
In the electrical equipment coil of frequency converter relevant device such as high-speed transitions element, frequency converter motor, transformer etc.,
As magnetic wire mainly using the insulated electric conductor for being enameled wire.And as described above, in frequency converter relevant device, due to applying
There is nearly 2 times of the voltage of the frequency converter output voltage, therefore it is required that making as one of the material for constituting these electrical equipment coils
The frequency converter surge deterioration of enameled wire is minimum limit.
However, shelf depreciation deterioration is usually the phenomenon that electrical insulating material intricately generates following deteriorations: by the part
Caused by the deterioration of molecular chain scission caused by the collision of the charged particle of electric discharge and generation, sputtering deterioration, local temperature rise
Heat fusing or thermal decomposition deterioration, chemical deterioration caused by ozone etc. as caused by electric discharge.Therefore, because of actual part
Sometimes thickness can be reduced the electrical insulating material of discharge deterioration.
It is thought that the frequency converter surge deterioration of insulated electric conductor is also to deteriorate identical mechanism according to common shelf depreciation
And carry out.That is, the frequency converter surge deterioration of enameled wire is because the higher surge voltage of the peak value generated in frequency converter is insulating
The phenomenon that electric wire generates shelf depreciation, the film of insulated electric conductor is caused to deteriorate because of the shelf depreciation, i.e. high frequency partial discharge deterioration.
For nearest electrical equipment, it is desirable that insulated electric conductor as the surge voltage of hundreds of volt levels can be born.I.e.
The partial discharge inception voltage of insulated electric conductor must be above.Herein, so-called partial discharge inception voltage is using commercially available
The value that the device of referred to as partial discharge test device measures.Measuring temperature, the frequency of used alternating voltage, measurement sense
Degree etc. can change as needed, and above-mentioned value is measured at 23 DEG C, 50Hz, 10pC, and the voltage of shelf depreciation is generated.
The deterioration of the enamel-cover layer of the insulated electric conductor as caused by above-mentioned shelf depreciation in order to prevent, and not generated
The high insulated electric conductor of shelf depreciation, i.e. partial discharge inception voltage considers the tree for having low using relative dielectric constant in enamel-cover layer
Rouge and the method for increasing paint cladding thickness.However, for the resin of commonly used resin varnish, the phase of most of resin
It is between 3~5 to dielectric constant, there is no the especially low resins of relative dielectric constant.In addition, considering required by enamel-cover layer
In the case where other characteristics (heat resistance, solvent resistance, pliability etc.), actual conditions are may not can to select relative dielectric constant
Low resin.Therefore, to obtain higher partial discharge inception voltage, the thickness for increasing enamel-cover layer is indispensable.
However, in manufacturing process, increasing the number by sintering furnace, as conductor to increase the thickness of enamel-cover layer
The thickness of the overlay film being made of copper oxide on copper surface increase, the bonding force of conductor and enamel-cover layer thus can be caused to reduce.
For example, the number by sintering furnace is more than 12 times when the case where obtaining the enamel-cover layer of the thickness more than 60 μm.Pass through known to if
Sintering furnace is more than 12 times, then the bonding force of conductor and enamel-cover layer extremely reduces.
In order to improve the above problem, the Chinese invention patent of Patent No. ZL201380014979.1 discloses a kind of resistance
Frequency device surge insulated electric conductor, the insulated electric conductor is by the way that the enamel-cover sinter layer of certain specification and thickness is arranged in conductor periphery and squeezes out
Coated with resin layer makes insulating layer thickness membranization using additional at least 2 layers of structure, and makes it have higher shelf depreciation starting electricity
Pressure and excellent thermal aging resistance property.
Then currently, in today that electrical component is just developing towards miniaturization and lightweight, for electric product portability and
More stringent requirements are proposed for high availability etc., so that wherein element is also required to continuously improve, to adapt to its light weight
The requirement of change, in the electrical equipment of certain type, the insulated electric conductor for wherein anti-frequency converter is also in this way, some electrically set
Perhaps, anti-frequency converter insulated electric conductor in standby realizes certain lightweight；But the insulated electric conductor of anti-frequency converter surge is in guarantee property now
Can while still or with thicken be it is leading, this is runed counter to light-weighted requirement, therefore unrestrained for the anti-frequency converter in part now
The requirement for gushing insulated electric conductor needs to be improved while guaranteeing its performance.
Summary of the invention
(1) technical problems to be solved
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of anti-frequency converter insulated electric conductor, the insulated electros
Line aims to solve the problem that existing anti-frequency converter surge insulated electric conductor can only be thickened by physics to enhance product performance, to make insulated electro
Line does not meet the technical issues of partial electric device miniaturization and lightweight requirements；It can guarantee insulated electro by the technical solution
Linearly can while, reduce its thickness, make it have the property taken and high availability etc. requirement, i.e., guarantee shelf depreciation generate voltage,
High temperature insulation characteristic and resistant to heat aging high characteristic, and anti-frequency converter insulated electric conductor insulated electric conductor conductor or even its entirety can be reduced
Thickness.
(2) technical solution
In order to solve the above-mentioned technical problem, present inventor has performed further investigations to find, by the insulation outside conductor
Layer is thickened, and can improve the performance of anti-frequency converter surge insulated electric conductor really, and guarantee its stability, but this and current light weight
The trend of change is runed counter to, and by uniforming to the insulating layer outside conductor, makes outside it that only setting squeezes out coated with resin layer,
And material and cross sectional shape by limiting conductor in the special way, and coated with resin layer is squeezed out by limiting with determining digitization
Thickness and its tensile modulus of elasticity and relative dielectric constant at a certain temperature at 23 DEG C, thus can guarantee it
While performance, reduces anti-frequency converter insulated electric conductor insulated electric conductor conductor or even its whole thickness, make its miniaturization and light weight
Change, i.e. guarantee shelf depreciation generates voltage, high temperature insulation characteristic and resistant to heat aging high characteristic, and can reduce anti-frequency converter insulation
Wire insulation wire conductor or even its whole thickness, the present invention are based on this and complete, and by testing skill of the present invention
The specific implementation case of art scheme it can be concluded that, while reducing insulated electric conductor thickness, moreover it is possible to improve its resistance to pressure.
The present invention provides such a anti-frequency converter insulated electric conductors, in the periphery of conductor there is at least one layer of squeeze out to be coated
Resin layer, wherein
The conductor is alloy copper conductor, and the cross sectional shape of the conductor is rectangle or circle, the rectangular section conductor
Length-width ratio be 1.5-8.0；The one-sided thickness for squeezing out coated with resin layer is 40-110 μm, and the extrusion coated with resin layer exists
23 DEG C of tensile modulus of elasticity is greater than 200MPa, and the relative dielectric constant for squeezing out coated with resin layer is 2.0- at 25 DEG C
5.0。
Preferably, the extrusion coated with resin layer material is polyether-ether-ketone or PPS.
Preferably, the conductor is corronil conductor, and the cross sectional shape of the conductor is rectangle, and the rectangular section is led
The length-width ratio of body is 1.8.
Preferably, the one-sided thickness for squeezing out coated with resin layer is 45-75 μm, and the extrusion coated with resin layer is at 23 DEG C
Tensile modulus of elasticity be greater than 3.0GPa, it is described squeeze out coated with resin layer relative dielectric constant at 25 DEG C be 2.8-3.3.
Wherein, general to use unit for MPa and GPa for the tensile modulus of elasticity of respective material, and 1GPa=
1024MPa, in industrial application, the two is conventional unit.
(3) beneficial effect
Compared with prior art, the beneficial effects of the present invention are:
Technical solution of the present invention by uniforming the insulating layer outside conductor, makes only to set outside it breakthroughly
It sets and squeezes out coated with resin layer, and material and cross sectional shape by limiting conductor in the special way, and by limiting with determining digitization
Surely the thickness and tensile modulus of elasticity and relative dielectric constant at a certain temperature of coated with resin layer are squeezed out, thus
While guaranteeing its performance, reduces anti-frequency converter insulated electric conductor insulated electric conductor conductor or even its whole thickness, keep its small-sized
Change and lightweight, i.e. guarantee shelf depreciation generates voltage, high temperature insulation characteristic and resistant to heat aging high characteristic, and can reduce resistance
Frequency device insulated electric conductor insulated electric conductor conductor or even its whole thickness, and pass through the specific implementation case of test technical solution of the present invention
Example it can be concluded that, while reducing insulated electric conductor thickness, moreover it is possible to improve its resistance to pressure.
In general, technical solution of the present invention can reduce its thickness, make its tool while guaranteeing insulated electric conductor performance
The standby property taken and high availability etc. require, and by the case study on implementation of test technical solution of the present invention it can be concluded that, it is exhausted reducing
While edge wiring thickness, moreover it is possible to improve its resistance to pressure.
Detailed description of the invention
Illustrate the specific embodiment of the invention or technical solution in the prior art in order to clearer, it below will be to specific
Embodiment describes required attached drawing in the prior art and is briefly described, it should be apparent that, it is described below
Attached drawing is only one embodiment of the present invention, to those skilled in the art, is not being made the creative labor
Under the premise of, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of sectional view of embodiment of anti-frequency converter insulated electric conductor of the invention.
Fig. 2 is the sectional view of anti-frequency converter insulated electric conductor another embodiment of the invention
The label in accompanying drawing is: 1- conductor, 2- squeezes out coated with resin layer.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below to this
Technical solution in invention specific embodiment carries out clear, complete description, with the present invention is further explained, it is clear that retouched
The specific embodiment stated is only a part of embodiment of the invention, rather than whole patterns.
Embodiment 1
Present embodiment is anti-frequency converter insulated electric conductor, has two layers of extrusion coated with resin in the periphery of conductor
Layer, conductive material are corronil conductor, and the cross sectional shape of conductor is rectangle, and the length-width ratio of the rectangular section conductor is
1.5, when the conductor is as master core, it can make the most wide of its section that can make it when the conductor is as by-pass core having a size of 2.0mm
Section it is most wide having a size of 0.4mm；Its one-sided thickness for squeezing out coated with resin layer is 45 μm, and control squeezes out coated with resin layer 23
DEG C tensile modulus of elasticity be 200MPa, control squeeze out coated with resin layer relative dielectric constant at 25 DEG C be 2.0-2.3, should
Extrusion coated with resin layer is polyether-ether-ketone material.
Embodiment 2
Present embodiment is anti-frequency converter insulated electric conductor, has one layer of extrusion coated with resin in the periphery of conductor
Layer, conductive material are corronil conductor, and the cross sectional shape of conductor is rectangle, and the length-width ratio of the rectangular section conductor is
1.8, when the conductor is as master core, it can make the most wide of its section that can make it when the conductor is as by-pass core having a size of 2.0mm
Section it is most wide having a size of 0.4mm；Its one-sided thickness for squeezing out coated with resin layer is 70 μm, and control squeezes out coated with resin layer 23
DEG C tensile modulus of elasticity be 3.0GPa, control squeeze out coated with resin layer relative dielectric constant at 25 DEG C be 2.8-3.3, should
Extrusion coated with resin layer is PPS material.
Embodiment 3
Present embodiment is anti-frequency converter insulated electric conductor, has four layers of extrusion coated with resin in the periphery of conductor
Layer, conductive material are copper-tin alloy conductor, and the cross sectional shape of conductor is circle, when the conductor is as master core, can make its section
Face it is most wide having a size of 2.0mm, when the conductor is as by-pass core, the most wide having a size of 0.4mm of its section can be made；It squeezes out coating
The one-sided thickness of resin layer is 100 μm, and it is 1.0GPa that control, which squeezes out coated with resin layer in 23 DEG C of tensile modulus of elasticity, and control is squeezed
The relative dielectric constant of coated with resin layer is 4.6-5.0 at 25 DEG C out, which is polyether-ether-ketone material.
Above three scheme can reduce its thickness, it is made to have the property taken and Gao Ke while guaranteeing insulated electric conductor performance
It is required with property etc., therefore can be used as anti-frequency converter insulated electric conductor, the miniaturization and lightweight of electrical component can be improved.
The thickness that above three scheme squeezes out coated with resin layer is different, but from the point of view of the occupation rate relative to stator slot, In
There are the case where generation between slot and electric wire and in electric wire and electric wire for the shelf depreciation generated in the stator slot of motor etc.
Between generate the case where 2 kinds.Therefore, for insulated electric conductor, by using the extrusion coated with resin layer that flat surface is arranged in
Thickness squeeze out the different insulated electric conductor of the thickness of coated with resin layer from be arranged in edge surface, shelf depreciation thus can be maintained to rise
The value of beginning voltage, and improve ratio of the total sectional area of conductor relative to the total sectional area in the slot of motor.Herein, so-called flat
Face refers to that the section of flat wire is pair of long side in the pairs of opposite both sides of rectangle, and so-called edge surface refers in opposite both sides
Pair of short side.
It should be noted that in the inventive solutions, it is excellent when having the case where multilayer extrusion coated with resin layer
Selecting each interlayer is same resin；If resin is identical, the presence or absence of the additive of each interlayer in addition to resin, type, blend amount can
It is different；Wherein, squeezing out coated with resin layer is preferably 1 layer or 2 layers.
Contrast test
Respectively Example 1-3 three kinds of anti-frequency converter insulated electric conductors, respectively to its flexibility, adhesion, heat shock resistance,
Film integrity, elongation, breakdown voltage, shelf depreciation voltage are tested, and can observe its experimental result reach existing mark
The performance requirement of the quasi- anti-frequency converter surge insulated electric conductor of thickness, and obtain corresponding conclusion, specific performance test process and result with
And conclusion such as the following table 1.
The anti-frequency converter insulated electric conductor performance test process and result of 1,3 embodiment of table
Conclusion: technical solution of the present invention can reduce its thickness, have it and take while guaranteeing insulated electric conductor performance
Property and high availability etc. require, i.e., guarantee shelf depreciation generates voltage, high temperature insulation characteristic and resistant to heat aging high characteristic, and energy
Reduce anti-frequency converter insulated electric conductor insulated electric conductor conductor or even its whole thickness, and can also be obtained by this test,
While reducing insulated electric conductor thickness, moreover it is possible to improve its resistance to pressure.
The foregoing describe technical characteristics of the invention and basic principle and associated advantages, for those skilled in the art
For, it is clear that the present invention is not limited to the details of above-mentioned exemplary embodiment, and without departing substantially from design of the invention or
In the case where essential characteristic, the present invention can be realized in other specific forms.Therefore, in all respects, should all incite somebody to action
Above-mentioned specific embodiment regards exemplary as, and is non-limiting, the scope of the present invention by appended claims and
It is not that above description limits, it is intended that all changes that come within the meaning and range of equivalency of the claims are included
In the present invention.
Although not each embodiment is only in addition, it should be understood that this specification is described according to each embodiment
It contains an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art answer
When considering the specification as a whole, the technical solution in each embodiment may also be suitably combined to form art technology
The other embodiments that personnel are understood that.
Claims (4)
1. a kind of anti-frequency converter insulated electric conductor, which is characterized in that there is at least one layer of extrusion coated with resin layer in the periphery of conductor,
Wherein,
The conductor is alloy copper conductor, and the cross sectional shape of the conductor is rectangle or circle, the length of the rectangular section conductor
Width is than being 1.5-8.0；The one-sided thickness for squeezing out coated with resin layer is 40-110 μm, and the extrusion coated with resin layer is at 23 DEG C
Tensile modulus of elasticity be greater than 200MPa, it is described squeeze out coated with resin layer relative dielectric constant at 25 DEG C be 2.0-5.0.
2. a kind of anti-frequency converter insulated electric conductor according to claim 1, which is characterized in that the extrusion coated with resin layer material
Matter is polyether-ether-ketone or PPS.
3. a kind of anti-frequency converter insulated electric conductor according to claim 1, which is characterized in that the conductor is led for corronil
Body, the cross sectional shape of the conductor are rectangle, and the length-width ratio of the rectangular section conductor is 1.8.
4. a kind of anti-frequency converter insulated electric conductor according to claim 1, which is characterized in that the extrusion coated with resin layer
One-sided thickness is 45-75 μm, and the extrusion coated with resin layer is greater than 3.0GPa, the extrusion quilt in 23 DEG C of tensile modulus of elasticity
The relative dielectric constant for covering resin layer is 2.8-3.3 at 25 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910521774.1A CN110415874A (en) | 2019-06-17 | 2019-06-17 | A kind of anti-frequency converter insulated electric conductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910521774.1A CN110415874A (en) | 2019-06-17 | 2019-06-17 | A kind of anti-frequency converter insulated electric conductor |
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| CN110415874A true CN110415874A (en) | 2019-11-05 |
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| CN201910521774.1A Pending CN110415874A (en) | 2019-06-17 | 2019-06-17 | A kind of anti-frequency converter insulated electric conductor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200035407A1 (en) * | 2017-03-22 | 2020-01-30 | Mitsubishi Materials Corporation | Insulated electric wire, production method therefor, coil and coil production method using same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104170025A (en) * | 2012-11-30 | 2014-11-26 | 古河电气工业株式会社 | Inverter surge-resistant insulated wire and method for producing same |
| CN106489183A (en) * | 2014-06-03 | 2017-03-08 | 古河电气工业株式会社 | Insulated electric conductor and its manufacture method |
| CN109074909A (en) * | 2016-04-06 | 2018-12-21 | 古河电气工业株式会社 | Insulated electric conductor, coil and electric/electronic |
-
2019
- 2019-06-17 CN CN201910521774.1A patent/CN110415874A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104170025A (en) * | 2012-11-30 | 2014-11-26 | 古河电气工业株式会社 | Inverter surge-resistant insulated wire and method for producing same |
| CN106489183A (en) * | 2014-06-03 | 2017-03-08 | 古河电气工业株式会社 | Insulated electric conductor and its manufacture method |
| CN109074909A (en) * | 2016-04-06 | 2018-12-21 | 古河电气工业株式会社 | Insulated electric conductor, coil and electric/electronic |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200035407A1 (en) * | 2017-03-22 | 2020-01-30 | Mitsubishi Materials Corporation | Insulated electric wire, production method therefor, coil and coil production method using same |
| US11581127B2 (en) * | 2017-03-22 | 2023-02-14 | Mitsubishi Materials Corporation | Insulated electric wire, production method therefor, coil and coil production method using same |
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Application publication date: 20191105 |