WO2015135719A2 - Isolationsband, dessen verwendung als elektrische isolation für elektrische maschinen, die elektrische isolation und verfahren zur herstellung des isolationsbandes - Google Patents
Isolationsband, dessen verwendung als elektrische isolation für elektrische maschinen, die elektrische isolation und verfahren zur herstellung des isolationsbandes Download PDFInfo
- Publication number
- WO2015135719A2 WO2015135719A2 PCT/EP2015/053084 EP2015053084W WO2015135719A2 WO 2015135719 A2 WO2015135719 A2 WO 2015135719A2 EP 2015053084 W EP2015053084 W EP 2015053084W WO 2015135719 A2 WO2015135719 A2 WO 2015135719A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tape
- insulating
- insulation
- insulating tape
- winding
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/30—Windings characterised by the insulating material
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/10—Applying solid insulation to windings, stators or rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/10—Applying solid insulation to windings, stators or rotors
- H02K15/105—Applying solid insulation to windings, stators or rotors to the windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
-
- 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
- H02K3/40—Windings characterised by the shape, form or construction of the insulation for high voltage, e.g. affording protection against corona discharges
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
- H02K2203/09—Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
Definitions
- Insulation tape its use as electrical insulation for electrical machines, electrical insulation and methods for making the insulation tape
- the invention relates to an insulation tape according to the Oberbe ⁇ handle of the main claim, its use as electrical insulation for electrical, in particular rotating, machines, the electrical insulation and a method for producing the insulation tape.
- the Iso ⁇ liersystem has the task, electrical conductors, namely wires, coils, rods, sub-conductors, etc., permanently against each other and against the stator core or the environment to iso ⁇ lines.
- electrical conductors namely wires, coils, rods, sub-conductors, etc.
- the particles may be oriented to one another and thus attach tight so that a mechanically stressable mica paper forms.
- the bonding forces resulting from this interaction of the surfaces are directly related to the contact surfaces of adjacent particles. This results thermodynamically due to the interaction of the primary particles by van der Waals forces or hydrogen bonds.
- a flexible paper which is impregnable by electrical conductors easy to wind and by means of a reaction ⁇ resin, and at the same time has a good barrier to Treeing channels.
- the particles must have a high resistance to partial discharges, which occur incessantly during operation of the rotating machine. Due to the inorganic structure of the mica, it has inherently a high partial discharge resistance.
- the mica paper is applied to a further improvement of the mechanical strength on a support made of glass or polyester fabric and finally converted into a composite ⁇ material.
- This is achieved by the defined Pa ⁇ pier by means of a liquid and the reactive polymer impregnation and curing in a subsequent step.
- So far Iso ⁇ lierb are known which comprise, for example, a fabric or a mica material, wherein an adhesive connects the two compo ⁇ nents so that a so-called corona protection tape is formed. It is used, among other things, to electrically insulate electrical conductors in high-voltage machines and high-voltage generators.
- the thermal conductivity of commonly used impregnated with epoxy resins mica paper on glass or polyester fabric as a support material is about 0.2-0.25 W / mK at room temperature.
- the consequent erge- bende insulating material thus has thermally insulating properties in addition to good electrical characteristics sheep ⁇ th. In operation, therefore, creates a heat accumulation in large rotating machines. Due to the low thermal conductivity of the glazing merisoltechnik the resulting heat in the copper conductor can be given only conditionally to the steel of the stator. This accumulation of heat is especially serious ⁇ imprinted in the generator midsection. In addition, due to inhomogeneities and imperfections in the main insulation local sectionentladungs memorize
- planar alumina is used as a direct mica replacement.
- thermally conductive particles in the impregnating resin or in the mica, but all do not get along without the use of mica and therefore always allow only a small increase in the thermal conductivity.
- Resin mixture are present and penetrate the composite tape.
- WO 2007/114876 describes a method for producing a strip with highly conductive particles. These are used to back-impregnate a composite tape so that at least 1% of the thermally conductive particles contained in the resin penetrate into the fabric.
- WO 2008/091489 describes an insulating tape with a multi-layered platelet structure.
- the insulation here consists of a mixture of mica and Bohrnitrid platelets.
- US 2012/0009408 describes a pre-impregnated highly heat-conductive mica paper in which a meso-micro-mixture of highly heat-conductive platelets, preferably of boron nitride, are preferably arranged between the fabric and the mica layer.
- an insulating tape is struck forward in the form ei ⁇ nes composite particles for the electric insulating tape, said electrically insulating plate-like
- Particles are connected by means of an electrically insulating binder ei ⁇ nem electrical insulation material in the form of an at least partially porous insulating tape and the insulating tape is wound in a trained under tensile force on a winding conductor structure.
- a winding the insulation strip is carried out by the direct application to the conductor structure.
- an electrical insulation in particular a main insulation for an electrical machine, in particular a rotating machine, is provided, wherein an inventive insulation tape according to an inventive
- a method for producing an insulating tape according to the invention is proposed in which the platelet-shaped particles are metal oxide platelets or mica platelets.
- An inventive isolation band thus consists essentially of the
- platelet-shaped particles and a binder but is at least partially porous and thus impregnable.
- an effective increase in the overall thermal conductivity of the electrical insulation is possible, which may be a main insulation in particular. This is due to the serial connection of thermal resistances, particularly in a radial direction, which states that the total thermal conductivity of a main insulation relationship ⁇ as insulation by the largest is located in series thermal resistance is determined.
- the thermal conductivity is determined exclusively by the plastic layer with the plate-like particles. It can result in a multiple higher thermal conductivity of the total insulation system.
- the insulating tape for winding already without heat-insulating additives sufficient tensile strength and flexibility have on ⁇ .
- an insulating paper and from it a tape of the insulating paper as insulating tape can be produced from the electrical insulating material first.
- the insulating tape can be releasably secured to the winding on a temporary carrier tape.
- from the electrical insulating material first an insulating paper, from which a band of the insulation paper are produced and this are releasably secured as an insulating tape on the temporary carrier tape.
- the temporary carrier tape can be separated from the insulation tape after application.
- the temporary carrier tape can be separated from the isolati ⁇ onsband before application, in particular immediately before application.
- the temporary carrier tape can be removed continuously during application of the insulation ⁇ band.
- the insulating tape can be wound offset overlapping on the conductor structure. That is, the insulating tape covered during winding only a portion of the already applied insulation tape.
- the binder can be removed after the winding of the insulating tape.
- the insulating tape can be impregnated after winding.
- the platelet-shaped particles may be metal oxide platelets or mica platelets.
- the metal oxide platelets may be aluminum oxide platelets.
- the binder may be polymer-based.
- the binder may be an epoxidized novolac system.
- an insulation paper and from this a tape of the insulation paper as the insulation ⁇ band can be generated from the electrical insulating material first.
- the insulation tape can be placed on a temporary carrier tape ⁇ and releasably secured.
- the insulation tape may foil cast film drawn as an organic or aqueous slurry ⁇ system to the temporary carrier tape or and dried thereafter.
- the insulation tape may be prior to winding to a winding tape kon Stammio ⁇ defined.
- Figure 1 shows an embodiment of a conventional main insulation
- Figure 2 is another view of the conventional main insulation;
- Figure 3 shows an embodiment of an inventive
- Figure 4 shows an embodiment of a Wickeins invention
- Figure 5 shows an embodiment of an inventive
- Figure 1 shows an embodiment of a conventional main insulation or main insulation. Between an inner electrode 9 and an outer electrode 11, the forth ⁇ tional main insulation 7 is arranged. This will create ⁇ ge by meh ⁇ eral layers of Al203 / plastic on glass fabric / plastic.
- Reference numeral 7a denotes a Al203 / plastic layer
- reference numeral 7b denotes a glass tissue ⁇ be / plastic sheet on which the layer has been applied 7a respectively.
- several layers 7a and 7b are used to produce the main insulation 7, which results from the winding of the layers 7a and 7b.
- the tissue / plastic intermediate layers 7b which are provided a magnification ⁇ fication of the total thermal conductivity of the main insulation in the way.
- the reason for this is the serial connection of thermal resistances, which states that the entire heat ⁇ conductivity of the main insulation is determined by the largest series connected thermal resistance.
- these are the glass fabric / plastic layers with a thermal conductivity of about 0, 2W / coolant.
- a fabric-free aluminum ⁇ miniumoxid plastic layer has a many such high thermal conductivity of> 0.8 W / mK.
- the series connection shown in FIG. 1 would provide a total thermal conductivity of 0.3 to 0.4 W / mK due to the different thermal conductivities of the individual layers.
- Figure 2 shows an embodiment of a conventional main insulation in which conventional layers are wound on each other.
- Figure 2 shows a conventional sequence of layers of Al203-plastic layer 7a 7b on a glass tissue ⁇ be / plastic interlayer.
- Figure 2 shows a Kochlap ⁇ pung of 50% of the wound insulation tape.
- the thermally poorly conductive glass cloth-plastic layer 7b does not contribute to the improvement of the electric erosion resistance. The reason for this is that forming treeing channels can pass them without extension of the path (as with the platelet-shaped metal oxide) perpendicular to the main insulation.
- winding the main insulation 7 is usually worked with 50% tape overlap.
- Figure 3 shows an embodiment of an inventive
- Insulation in particular main insulation. It is a tissue-free plastic layer with platelet-shaped particles used in the particular ⁇ Al203 particles, wherein a conventional erodible glass fabric / plastic layer 7b is omitted and at the same total coating thickness the erosion resistance the total main insulation is increased. Due to the resulting lengthening of the treeing channels, the average life of the main insulation increases and the probability of failure of the entire generator decreases. In the electrical erosion of the polymeric insulation system, the kinetic energy of the electron avalanche is measure ⁇ giving. This is directly proportional to the amount of material injury ⁇ supply of the plastic insulation and its propagation velocity.
- This kinetic energy is strength at constant field, which is here present, determined by the Accelerat ⁇ n Drhensfire in a gaseous dielectric, for example in a pore or an already formed erosion channel, ie the way in which the field acts on the electrons, without that an obstacle in the form of a solid slows them down. Due to the changed design of the main insulation 7, these long acceleration paths are now avoided, since all regions of the main insulation 7 are filled with treeing-channel-lengthening, partially-discharge-resistant platelet particles. This delays the spread of erosion damage and in turn increases the life of the insulation 7. In the case of the inventive glass fabric-free winding this erosion weak part is no longer available. The erosion path must be aligned through the
- FIG. 3 shows an embodiment of an inventive use of an electrical insulation tape according to the invention 1.
- Fig. 3 shows an insulating tape 1 an alumina ⁇ band, this for the electrical insulation of electrical, especially rotating machines, especially permanent electrical high voltage insulation, in particular between the conductor and ground potential in a groove and winding head, is used as the main insulation 7.
- FIG. 4 shows an exemplary embodiment of a winding according to the invention. After passing through the strip 3 on a carrier releasably fixed insulation tape 1 by a laminating roll 5, the insulating tape 1 can be wound on the Lei ⁇ ter Modell and separated in front of the carrier tape 3 in the form of a film. FIG. 4 shows how the insulating tape is wound around the conductor structure, for example a conductor structure 9. Similarly, the carrier tape can be wound 3 and used entspre ⁇ accordingly again.
- the combination In the winding of the isolati ⁇ onsbandes 1 around the conductor structure 9, the combination must iso- lationsband 1 on carrier tape 3 at a machine Wi ⁇ ckeln executed under a mechanical bias having a sufficient tensile strength. Likewise, the combination must be windable and also have a corresponding flexibility. When winding, care must be taken in particular that no air is trapped between the individual windings between the applied foil or the applied insulating tape 1.
- Fig. 5 shows an embodiment of an inventive method of manufacturing an insulating belt 1 with ranging from ⁇ flexibility for winding, wherein a sufficient tensile strength ge means of a carrier belt 3 is temporarily create ⁇ .
- a first step Sl a Erzeu ⁇ gene of a green insulating tape 1 by means of film casting or film pulling an organic or aqueous slip casting system 3.
- S on a mechanical stability to the Wi ⁇ ckeln-providing carrier tape takes place, a
- a drying can be carried out.
- a third step S3 is a packaging to a winding tape.
- a step S1 involves mixing a dispersion of platelet-shaped particles, a carrier fluid and a functionalizing agent which is distributed in the carrier fluid and has a mass fraction in the dispersion which corresponds to a predetermined mass ratio based on the mass fraction of the particles; producing a sediment by sedimentation of the dispersion, whereby the
- platelet-shaped particles are arranged substantially layer-like plane-parallel in the sediment and removing the carrier fluid from the sediment.
- energy is then introduced into the sediment to overcome the activation energy of the chemical reaction of the functionalizing agent with the particles, which forms the particle composite by coupling the particles via the functionalizing agent from the sediment, the mass ratio being predetermined in this way in that the particle composite has a porous structure.
- an insulation tape 1 according to the invention for example, alumina or mica flakes and an epoxidized novolac system can thus a tape casting or a sheet pulling starting from an organic or aqueous slurry system at a represent the mechanical stability to the winding securely stel ⁇ lumbar support belt.
- Fig. 6 shows an embodiment of an inventive use of an insulating tape according to the invention 1. It is in a winding W of the insulating tape 1 on an electrical conductor under a mechanical bias parallel to a continuous stripping Ab the transient ⁇ rising carrier tape 3 of the still green insulating tape 1 executed immediately after a stepwise application of the green insulating tape 1 on a conductor pattern. On the to insulating conductor structure now remains a winding of the still green insulating tape 1. It can then follow a step E debindering the winding of the green insulating tape. Finally, impregnation I of the winding of the green insulating tape can be carried out.
- the carrier tape 3 can be withdrawn continuously from this immediately after a successive application of the insulating tape 1 on the conductor ⁇ structure 9. It finds only de facto a winding of the actual
- the resulting green film strip can optionally be debinded after the winding in order to increase the proportion of open and thus impregnable porosity in the material.
- a molded film strip may be referred to as a green film strip which, after debindering, may be called a brown film strip.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Bodies (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Laminated Bodies (AREA)
- Organic Insulating Materials (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016556705A JP2017516437A (ja) | 2014-03-11 | 2015-02-13 | 絶縁テープ、電気機械用の電気絶縁体としての当該絶縁テープの使用、電気絶縁体及び絶縁テープの製造方法 |
EP15705276.2A EP3080898A2 (de) | 2014-03-11 | 2015-02-13 | Isolationsband, dessen verwendung als elektrische isolation für elektrische maschinen, die elektrische isolation und verfahren zur herstellung des isolationsbandes |
US15/125,306 US20170077775A1 (en) | 2014-03-11 | 2015-02-13 | Insulating Tape, Use Thereof As Electrical Insulation For Electrical Machines, Electrical Insulation, And Method For Producing The Insulating Tape |
CN201580013141.XA CN106104981A (zh) | 2014-03-11 | 2015-02-13 | 绝缘带、其作为用于电机的电绝缘的应用、电绝缘和制造绝缘带的方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014204416.2 | 2014-03-11 | ||
DE102014204416.2A DE102014204416A1 (de) | 2014-03-11 | 2014-03-11 | Isolationsband, dessen Verwendung als elektrische Isolation für elektrische Maschinen, die elektrische Isolation und Verfahren zur Herstellung des Isolationsbandes |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2015135719A2 true WO2015135719A2 (de) | 2015-09-17 |
WO2015135719A3 WO2015135719A3 (de) | 2015-10-29 |
Family
ID=52484476
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2015/053084 WO2015135719A2 (de) | 2014-03-11 | 2015-02-13 | Isolationsband, dessen verwendung als elektrische isolation für elektrische maschinen, die elektrische isolation und verfahren zur herstellung des isolationsbandes |
Country Status (6)
Country | Link |
---|---|
US (1) | US20170077775A1 (de) |
EP (1) | EP3080898A2 (de) |
JP (1) | JP2017516437A (de) |
CN (1) | CN106104981A (de) |
DE (1) | DE102014204416A1 (de) |
WO (1) | WO2015135719A2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110120557B (zh) * | 2018-02-05 | 2021-01-15 | 宁德新能源科技有限公司 | 保护装置及电池 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1135514B (it) * | 1981-02-18 | 1986-08-27 | Pirelli Cavi Spa | Cavo elettrico |
JPS60237828A (ja) * | 1984-05-11 | 1985-11-26 | Toshiba Corp | 回転電機コイル |
DE4244298C2 (de) * | 1992-12-28 | 2003-02-27 | Alstom | Isolierband und Verfahren zu seiner Herstellung |
JP2570210B2 (ja) * | 1995-05-29 | 1997-01-08 | 株式会社日立製作所 | プリプレグ |
JP2000116047A (ja) * | 1998-09-29 | 2000-04-21 | Hitachi Ltd | 高熱伝導絶縁コイル及びこのコイルを用いた回転電機装置 |
JP3843967B2 (ja) * | 2003-06-11 | 2006-11-08 | 三菱電機株式会社 | 絶縁コイルの製造方法 |
US7135639B2 (en) * | 2003-09-05 | 2006-11-14 | Siemens Power Generation, Inc. | Integral slip layer for insulating tape |
US7553438B2 (en) | 2004-06-15 | 2009-06-30 | Siemens Energy, Inc. | Compression of resin impregnated insulating tapes |
US20080050580A1 (en) | 2004-06-15 | 2008-02-28 | Stevens Gary C | High Thermal Conductivity Mica Paper Tape |
US7268293B2 (en) * | 2004-06-15 | 2007-09-11 | Siemen Power Generation, Inc. | Surface coating of lapped insulation tape |
US7776392B2 (en) | 2005-04-15 | 2010-08-17 | Siemens Energy, Inc. | Composite insulation tape with loaded HTC materials |
DE102004034550A1 (de) | 2004-07-16 | 2006-02-09 | Siemens Ag | Glimmschutzband |
US7846853B2 (en) | 2005-04-15 | 2010-12-07 | Siemens Energy, Inc. | Multi-layered platelet structure |
US20070026221A1 (en) * | 2005-06-14 | 2007-02-01 | Siemens Power Generation, Inc. | Morphological forms of fillers for electrical insulation |
JP4996086B2 (ja) * | 2005-09-29 | 2012-08-08 | 株式会社東芝 | マイカテープおよびこのマイカテープを用いた回転電機コイル |
US7812260B2 (en) * | 2007-09-25 | 2010-10-12 | Siemens Energy, Inc. | Electrical insulation tape with controlled bonding and resin impregnation properties |
CN101423669A (zh) * | 2008-12-04 | 2009-05-06 | 浙江工业大学 | 一种用于发热电缆的绝缘导热材料 |
DE102010019603A1 (de) | 2010-05-05 | 2011-11-10 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Federspeicherbremszylinder mit innerhalb der Speicherfeder angeordnetem Elektromotor |
DE102010019721A1 (de) * | 2010-05-07 | 2011-11-10 | Siemens Aktiengesellschaft | Elektrisches Isoliermaterial, Isolationspapier und Isolationsband für eine Hochspannungsrotationsmaschine |
EP2520619A1 (de) | 2011-05-05 | 2012-11-07 | Siemens Aktiengesellschaft | Verfahren zum Herstellen eines porösen Partikelverbunds für ein elektrisches Isolationspapier |
-
2014
- 2014-03-11 DE DE102014204416.2A patent/DE102014204416A1/de not_active Withdrawn
-
2015
- 2015-02-13 CN CN201580013141.XA patent/CN106104981A/zh active Pending
- 2015-02-13 EP EP15705276.2A patent/EP3080898A2/de not_active Withdrawn
- 2015-02-13 WO PCT/EP2015/053084 patent/WO2015135719A2/de active Application Filing
- 2015-02-13 US US15/125,306 patent/US20170077775A1/en not_active Abandoned
- 2015-02-13 JP JP2016556705A patent/JP2017516437A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE102014204416A1 (de) | 2015-09-17 |
JP2017516437A (ja) | 2017-06-15 |
US20170077775A1 (en) | 2017-03-16 |
WO2015135719A3 (de) | 2015-10-29 |
CN106104981A (zh) | 2016-11-09 |
EP3080898A2 (de) | 2016-10-19 |
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