CN110010270B - Electromagnetic wire for high-power wind driven generator - Google Patents
Electromagnetic wire for high-power wind driven generator Download PDFInfo
- Publication number
- CN110010270B CN110010270B CN201910297884.4A CN201910297884A CN110010270B CN 110010270 B CN110010270 B CN 110010270B CN 201910297884 A CN201910297884 A CN 201910297884A CN 110010270 B CN110010270 B CN 110010270B
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- conductors
- insulating layer
- row
- electromagnetic wire
- conductor
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- 239000004020 conductor Substances 0.000 claims abstract description 77
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000010410 layer Substances 0.000 claims description 60
- 238000009413 insulation Methods 0.000 claims description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 17
- 239000010445 mica Substances 0.000 claims description 17
- 229910052618 mica group Inorganic materials 0.000 claims description 17
- 239000004962 Polyamide-imide Substances 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 229920002312 polyamide-imide Polymers 0.000 claims description 11
- 239000012790 adhesive layer Substances 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 description 6
- 238000004804 winding Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005253 cladding Methods 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 235000010678 Paulownia tomentosa Nutrition 0.000 description 1
- 240000002834 Paulownia tomentosa Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0216—Two layers
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The invention relates to an electromagnetic wire for a high-power wind driven generator, which comprises a conductor and an insulating layer attached to the outside of the conductor, wherein the conductor is provided with a plurality of conductors, the conductors are arranged and close together, the cross section of the conductors after the arrangement and close together is rectangular, and the insulating layer comprises a first insulating layer attached to each conductor respectively and a second insulating layer binding the conductors and attached to the outside of the first insulating layer; the electromagnetic wire for the high-power wind driven generator uses a plurality of conductors with small specifications to replace one conductor with large specification in the prior art, so that the overall strength and hardness of the electromagnetic wire are reduced, the electromagnetic wire is easy to process and shape, the shape of the drawn electromagnetic coil is regular and attractive, the electromagnetic wire is not easy to damage in the forming process, the condition that an insulating layer is lost due to deformation of the electromagnetic wire during processing is avoided, and a foundation is provided for the thinning design of the insulating layer.
Description
Technical Field
The invention belongs to the technical field of special winding wires, and particularly relates to an electromagnetic wire product suitable for a high-power wind driven generator.
Background
The electromagnetic wire product is mainly applied to high-power 7MW and above direct-drive wind driven generator stator coils, the electromagnetic wire size specification used in the prior art is usually 4mm multiplied by 16mm and above, when the electromagnetic wire is wound into a fusiform coil, 11 to 12 turns of single electromagnetic wires are stacked together, as the larger the specification of the single electromagnetic wire is, the higher the strength and the hardness of the single electromagnetic wire are, the larger the single electromagnetic wire needs to be drawn with great force to form the frame-shaped coil, the higher the requirement on drawing equipment is required during drawing, the shape of the drawn coil is not regular and perfect enough, the shape is difficult to correct in the subsequent baking and pressing process, and the electromagnetic wire is easy to damage in the forming process; in addition, the width of the electromagnetic wire is wider, so that the copper wire is easy to deform at the R-bend position to influence insulation. In addition, in order to avoid the condition of insulation damage in the processing process, the insulation thickness is generally set to be 0.70-0.75 mm, and the insulation thickness is thicker, so that the full rate of the motor groove is low, and the efficiency is relatively low.
Disclosure of Invention
The invention aims to provide an electromagnetic wire for a high-power wind driven generator.
In order to solve the technical problems, the invention adopts a technical scheme that:
the electromagnetic wire for the high-power wind driven generator comprises a conductor and an insulating layer attached to the outside of the conductor, wherein the conductor is provided with a plurality of conductors, the conductors are arranged and close to each other, the cross section of the conductors after being arranged and close to each other is rectangular, and the insulating layer comprises a first insulating layer attached to each conductor respectively and a second insulating layer binding the conductors and attached to the outside of the first insulating layer.
Preferably, the conductor is composed of rectangular flat copper wires, four corners of each rectangular flat copper wire are rounded corners, the thickness of each rectangular flat copper wire is 0.5 mm-3 mm, and the width of each rectangular flat copper wire is 2 mm-9 mm.
Preferably, the conductors have four conductors arranged and formed with a first row and a second row.
Preferably, the width values of the two conductors in the first row are not equal, the width values of the two conductors in the second row are not equal, and the total width value of the two conductors in the first row is set equal to the total width value of the two conductors in the second row. Therefore, the phenomenon that the internal conductors of the electromagnetic wire product are misplaced in the use process can be avoided, and the stability of the electromagnetic wire in use is improved.
Preferably, the width difference of the two conductors in the first row is 1mm to 2mm, and the width difference of the two conductors in the second row is 1mm to 2mm.
Preferably, the first insulating layer comprises a first wrapping layer wrapped around the periphery of the conductor, the first wrapping layer being composed of a strip-shaped polyamideimide film, and the first insulating layer further comprises an F-46 adhesive layer coated on the inner side surface of the first wrapping layer, or an F-46 adhesive layer coated on the inner side surface and the outer side surface of the first wrapping layer.
Preferably, the second insulating layer comprises a second cladding layer, the second cladding layer being constituted by a mica tape.
Preferably, the mica tape comprises a mica tape impregnated with an epoxy tung-gum, a glass cloth film and a polyamide imide film attached to the inner and outer sides of the mica tape, respectively.
Preferably, the insulation thickness of the first insulation layer is 0.08 mm-0.10 mm.
Preferably, the insulation thickness of the second insulation layer is 0.30 mm-0.40 mm.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
according to the electromagnetic wire for the high-power wind driven generator, a plurality of (4) conductors with small specification are used for replacing one conductor with large specification in the prior art, so that the overall strength and hardness of the electromagnetic wire are reduced, the electromagnetic wire is easy to process and shape, the shape of the drawn electromagnetic coil is regular and attractive, the electromagnetic wire is not easy to damage in the forming process, the condition that an insulating layer is lost due to deformation of the electromagnetic wire in the processing is avoided, and a foundation is provided for the thinning design of the insulating layer.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an electromagnetic wire according to the present invention;
FIG. 2 is a schematic illustration of a specific construction of a mica tape of the present invention;
wherein: 10. a conductor; p1, first row; p2, second row; j1, a first insulating layer, j2, a second insulating layer; 20. mica base band; 21. a glass cloth film; 22. a polyamide imide film.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings and the specific embodiments.
As shown in fig. 1 and 2, an electromagnetic wire for a high-power wind power generator includes a conductor 10 and an insulating layer attached to the outside of the conductor 10, wherein the conductor 10 has four conductors 10, the four conductors 10 are arranged and close together, the four conductors 10 are arranged and formed with a first row p1 and a second row p2, the cross-sectional shape of the four conductors 10 after the arrangement is rectangular, the width values of the two conductors 10 in the first row p1 are unequal, the width values of the two conductors 10 in the second row p2 are unequal, and the total width value of the two conductors 10 in the first row p1 is equal to the total width value of the two conductors 10 in the second row p2. The difference in width of the two conductors 10 in the first row p1 is 1mm to 2mm, and the difference in width of the two conductors 10 in the second row p2 is 1mm to 2mm. For example, in this example, the widths of the two conductors 10 of the first row p1 are set to 8.5mm and 7.5mm, the widths of the two conductors 10 of the second row p2 are set to 7.5mm and 8.5mm, and the thicknesses of all the conductors 10 are selected to be 2.8mm, i.e., one wide conductor 10 and one narrow conductor 10 are juxtaposed on a narrow side and arranged side by side to form the first row p1, and the other wide conductor 10 and the other narrow conductor 10 are juxtaposed in this manner to form the second row p2. Therefore, the phenomenon that the inner conductor 10 is misplaced in the use process of the electromagnetic wire product can be avoided, and the stability of the electromagnetic wire in use is improved.
In addition, the 4 conductors 10 are formed by rectangular flat copper wires, four corners of the rectangular flat copper wires are round corners, each rectangular flat copper wire is a continuous soft-state completely annealed flat copper wire, the Cu+Ag content is more than or equal to 99.90%, the oxygen content is less than or equal to 0.04%, and the volume resistivity is less than or equal to 0.017241 Ω & mm 2 M, elongation at break greater than or equal to 32%; the thickness of the rectangular copper flat wire is 0.5 mm-3 mm, the width of the rectangular copper flat wire is 2 mm-9 mm, and the fillet radius of the rectangular copper flat wire is 0.5 mm-1.00 mm.
Further, the insulating layers include a first insulating layer j1 attached to each conductor 10, respectively, and a second insulating layer j2 binding and attaching the four conductors 10 to the outer side of the first insulating layer j 1;
the first insulating layer j1 includes a first wrapping layer wrapped around the outer periphery of the conductor 10, the first wrapping layer being made of a band-shaped polyamideimide film 22, and the first insulating layer j1 further includes an F-46 glue layer coated on the inner side surface of the first wrapping layer, or may be an F-46 glue layer coated on the inner side surface and the outer side surface of the first wrapping layer. The thickness of the material of the strip-shaped polyamide-imide film 22 coated with the F-46 adhesive layer is 0.036 mm-0.038 mm, in this example, the width of the strip-shaped polyamide-imide film 22 is 8-15 mm, and the wrapping mode of the strip-shaped polyamide-imide film 22 is that a layer is wrapped by overlapping 3-4 mm. The insulation thickness of the whole first insulation layer j1 is 0.08-0.10 mm (the thickness after wrapping compression molding). The process flow of the first insulating layer j1 attached to the conductor 10 is as follows: paying off, film wrapping (film coated with F-46 glue on one side, wherein the glue is adhered to the copper conductor 10 in an inward facing manner), high-frequency induction heating at 380-400 ℃, silica gel pinch roller compacting, oven radiation heating at 350-400 ℃, water cooling, air cooling and drying, and wire winding.
The second insulating layer j2 includes a second clad layer composed of a mica tape. The mica tape comprises a mica tape 20, a glass cloth film 21 and a polyamide-imide film 22 which are respectively attached to the inner side surface and the outer side surface of the mica tape 20, and the mica tape 20 is impregnated with epoxy tung-gum. The thickness of the whole mica tape material is 0.14mm, the width is 25mm, the wrapping mode is 45% -50% overlapping one layer, and the insulation thickness of the whole second insulation layer j2 is 0.30 mm-0.40 mm (the thickness after wrapping compression molding).
In summary, the electromagnetic wire for the high-power wind driven generator uses a plurality of (4) small-sized conductors 10 to replace one large-sized conductor 10 in the prior art, so that the overall strength and hardness of the electromagnetic wire are reduced, the electromagnetic wire is easy to process and form, the shape of the drawn electromagnetic coil is regular and attractive, the electromagnetic wire is not easy to damage in the forming process, the situation that an insulating layer is lost due to deformation of the electromagnetic wire during processing is avoided, and a foundation is provided for the thinning design of the insulating layer.
The electromagnetic wire disclosed by the invention is thin in insulation thickness, the insulation thickness of 0.70-0.75 mm in the prior art is thinned to be lower than 0.40mm (namely the insulation thickness of the second insulation layer j 2), the improvement of the groove filling rate after being applied to a wind power stator is facilitated, and the efficiency of the motor is higher under the same volume condition. In addition, the electromagnetic wire product can break through the limitation of the specification of the electromagnetic wire in the prior art, so that the size of the single wire can be set larger, the number of turns of coil winding is reduced under the condition of the same volume limitation, and the slot filling rate of the motor is further improved.
Furthermore, the electromagnetic wire can improve the work rate of the next winding process, the second insulating layer j2 can overflow glue (epoxy tung gum) in the baking, pressing and heating process, and can be solidified after cooling, so that the coil inter-turn bonding and shaping effects are achieved, and the situation that the prior art needs to be used for brushing glue or filling a gel material is avoided.
The present invention has been described in detail with the purpose of enabling those skilled in the art to understand and practice the present invention, but not to limit the scope of the present invention, and the present invention is not limited to the above-described embodiments, and all equivalent changes or modifications according to the spirit of the present invention should be covered in the scope of the present invention.
Claims (5)
1. An electromagnetic wire for a high-power wind power generator, comprising:
the conductors are formed by rectangular copper flat wires, four corners of each rectangular copper flat wire are rounded corners, four conductors are arranged and close to each other to form a first row and a second row, the cross section appearance of the plurality of conductors after the conductors are close to each other is rectangular, and the total width value of the two conductors in the first row is equal to the total width value of the two conductors in the second row;
the insulating layers are attached to the outside of the conductors, each insulating layer comprises a first insulating layer attached to each conductor, and a second insulating layer binding a plurality of the conductors and attached to the outer side of the first insulating layer, each first insulating layer comprises a first wrapping layer wrapped around the periphery of each conductor, each first wrapping layer is composed of a strip-shaped polyamide imide film, and each first insulating layer further comprises an F-46 adhesive layer coated on the inner side surface of each first wrapping layer or an F-46 adhesive layer coated on the inner side surface and the outer side surface of each first wrapping layer;
the method is characterized in that:
the width values of the two conductors in the first row are unequal, the width values of the two conductors in the second row are unequal, and the gaps between the two conductors in the first row and the gaps between the two conductors in the second row are staggered;
the second insulating layer comprises a second wrapping layer, the second wrapping layer is composed of a mica tape, the mica tape comprises a mica base tape, glass cloth films and polyamide imide films, the glass cloth films and the polyamide imide films are respectively attached to the inner side face and the outer side face of the mica base tape, and the mica base tape is impregnated with epoxy tung-Martin.
2. The magnet wire for a high-power wind turbine of claim 1, wherein: the thickness of the rectangular copper flat wire is 0.5-3 mm, and the width of the rectangular copper flat wire is 2-9 mm.
3. The magnet wire for a high-power wind turbine of claim 1, wherein: the width difference of the two conductors in the first row is 1-2 mm, and the width difference of the two conductors in the second row is 1-2 mm.
4. The magnet wire for a high-power wind turbine according to claim 2, wherein: the insulation thickness of the first insulation layer is 0.08 mm-0.10 mm.
5. The magnet wire for a high-power wind turbine according to claim 2, wherein: the insulation thickness of the second insulation layer is 0.30 mm-0.40 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910297884.4A CN110010270B (en) | 2019-04-15 | 2019-04-15 | Electromagnetic wire for high-power wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910297884.4A CN110010270B (en) | 2019-04-15 | 2019-04-15 | Electromagnetic wire for high-power wind driven generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110010270A CN110010270A (en) | 2019-07-12 |
| CN110010270B true CN110010270B (en) | 2024-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910297884.4A Active CN110010270B (en) | 2019-04-15 | 2019-04-15 | Electromagnetic wire for high-power wind driven generator |
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| Country | Link |
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| CN (1) | CN110010270B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364305B (en) * | 2019-07-29 | 2024-03-29 | 湖州师范学院 | Double-roller enamelled flat wire conductor forming device |
| CN112491183A (en) * | 2020-11-27 | 2021-03-12 | 苏州贯龙电磁线有限公司 | Winding wire for offshore wind power stator block and preparation method thereof |
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| CN101552110A (en) * | 2008-12-18 | 2009-10-07 | 保定天威集团有限公司 | Copper film shielded and transposed conductor and producing method thereof |
| CN103051093A (en) * | 2012-12-03 | 2013-04-17 | 江苏航天动力机电有限公司 | Safety-increased type motor anticorona structure |
| CN103490543A (en) * | 2013-09-25 | 2014-01-01 | 苏州贯龙电磁线股份有限公司 | Electromagnetic wire for motor coil winding |
| CN203480876U (en) * | 2013-08-02 | 2014-03-12 | 四川金瑞电工有限责任公司 | Paper-wrapped film composite wire |
| CN207338008U (en) * | 2017-11-08 | 2018-05-08 | 川叶电子科技（上海）股份有限公司 | A kind of power cord |
| CN109378143A (en) * | 2018-11-12 | 2019-02-22 | 四川自胜机电设备有限责任公司 | A kind of motor basalt fiber cloth major insulation band and preparation method thereof |
| CN209515225U (en) * | 2019-04-15 | 2019-10-18 | 苏州贯龙电磁线有限公司 | A kind of high-power wind-driven generator electromagnetic wire |
-
2019
- 2019-04-15 CN CN201910297884.4A patent/CN110010270B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552110A (en) * | 2008-12-18 | 2009-10-07 | 保定天威集团有限公司 | Copper film shielded and transposed conductor and producing method thereof |
| CN103051093A (en) * | 2012-12-03 | 2013-04-17 | 江苏航天动力机电有限公司 | Safety-increased type motor anticorona structure |
| CN203480876U (en) * | 2013-08-02 | 2014-03-12 | 四川金瑞电工有限责任公司 | Paper-wrapped film composite wire |
| CN103490543A (en) * | 2013-09-25 | 2014-01-01 | 苏州贯龙电磁线股份有限公司 | Electromagnetic wire for motor coil winding |
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| Publication number | Publication date |
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| CN110010270A (en) | 2019-07-12 |
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