EP4294885A1 - Isolationssystem für elektrische rotierende maschinen und verfahren zur herstellung dazu - Google Patents
Isolationssystem für elektrische rotierende maschinen und verfahren zur herstellung dazuInfo
- Publication number
- EP4294885A1 EP4294885A1 EP22707666.8A EP22707666A EP4294885A1 EP 4294885 A1 EP4294885 A1 EP 4294885A1 EP 22707666 A EP22707666 A EP 22707666A EP 4294885 A1 EP4294885 A1 EP 4294885A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- resin
- formulation
- wet
- powder
- paint
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
- C08G59/22—Di-epoxy compounds
- C08G59/24—Di-epoxy compounds carbocyclic
- C08G59/245—Di-epoxy compounds carbocyclic aromatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
- C08G59/22—Di-epoxy compounds
- C08G59/30—Di-epoxy compounds containing atoms other than carbon, hydrogen, oxygen and nitrogen
- C08G59/306—Di-epoxy compounds containing atoms other than carbon, hydrogen, oxygen and nitrogen containing silicon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
- C08G59/32—Epoxy compounds containing three or more epoxy groups
- C08G59/3218—Carbocyclic compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
- C08G59/32—Epoxy compounds containing three or more epoxy groups
- C08G59/3254—Epoxy compounds containing three or more epoxy groups containing atoms other than carbon, hydrogen, oxygen or nitrogen
- C08G59/3281—Epoxy compounds containing three or more epoxy groups containing atoms other than carbon, hydrogen, oxygen or nitrogen containing silicon
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/04—Epoxynovolacs
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/10—Applying solid insulation to windings, stators or rotors, e.g. applying insulating tapes
- H02K15/105—Applying solid insulation to windings, stators or rotors, e.g. applying insulating tapes to the windings
-
- 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
Definitions
- Insulation system for electrical rotating machines and method for the production thereof are Insulation system for electrical rotating machines and method for the production thereof.
- the invention relates to an insulation system for an electrical rotating machine, in particular an electric motor and/or generator.
- the invention also relates to a method for producing such an insulation system, in particular for producing one or more components of an insulation system comprising several components.
- Electrical rotating machines in the low and high voltage range such as electric motors and electrical generators, are known. These machines are characterized by a large number of different designs and areas of application, they are used in all areas of technology, industry, everyday life, transport, medicine and other areas.
- the power range of electrical machines extends from orders of magnitude below one microwatt , for example in micro system technology, to more than one gigawatt, i.e. a thousand times a million watts, for example in the power plant sector. In between are applications with traction and drive motors in the vehicle sector, rail vehicle sector, etc.
- coils made up of partial conductors which are insulated from one another, for example by means of windings and/or wire enamel. These are formed from blanks, such as a spool fish, by drawing and twisting them in such a way that they can be inserted into the slots of a stator base body, i.e. into the laminated core of the electric motor.
- the coils are connected to each other via so-called winding heads and contacted by appropriate connections.
- the current- carrying coils are isolated from each other, from the laminated core and finally also from the environment by an insulation system.
- the insulation system regularly comprises several components, the main insulation, which is a winding based on mica tapes impregnated with epoxy, polyester or polyesterimide resin, provides insulation for the high-voltage conductors, especially copper conductors, against the grounded stator. It has a high partial discharge inception voltage, which enables it to permanently reduce, for example, 2.0 - 3.5 kV per millimeter.
- the most important components of an insulation system are viewed from the inside to the outside, the partial conductor insulation, main insulation, if necessary external corona protection (AGS) and if necessary end corona protection (EGS).
- AGS external corona protection
- EVS end corona protection
- “Inside” refers to the level of the conductors, in particular copper conductors, which initially have a relatively thin first insulation layer, the partial conductor insulation, which form the electrical coil. All insulation systems have a main insulation and - depending on the rating - voltage of the electrical rotating machine - then an outer corona protection, -AGS- and, if necessary, an end corona protection -EGS.
- main insulation All components of the insulation system, main insulation, AGS and EGS, have so far usually been wound onto the sub-conductors as strips, with parts of them, such as the EGS, being complete be applied by hand.
- the main insulation In the case of motors with lower rated voltages, as is the case with traction motors, for example, the main insulation cannot be designed as a wound strip but as a so-called slot box.
- the other parts cannot be applied fully automatically either, because either the number of pieces makes automation uneconomical and/or the risk of air pockets in the folds does not guarantee the quality required for winding.
- the tapes that are wound and the slot boxes that are inserted into the slots for the main insulation usually consist of glued mica flakes, which serve in the insulation to lengthen the erosion path in the insulation system, i.e. the direct path from the high-voltage side, i.e. the conductors, to the grounded laminated core, which results in a significantly longer service life for an insulation system.
- the object of the present invention is now to overcome the disadvantages of the prior art and to create a main insulation, an AGS and/or EGS that can be produced by hand without or at least largely without application. This object is achieved by the subject matter of the present invention, as disclosed in the description and the claims.
- the subject of the present invention is a powder coating formulation or wet coating for producing an insulation system of an electrical machine, in particular a rotating electrical machine with a rated voltage of at least 700 V, comprising at least one curable powder coating formulation, in particular one that can be cured at room temperature resin-resin or resin-hardener mixture that is solid or prepared in a solvent for wet paint, that - at least one first resin component which is based on hydrocarbons and has at least two epoxy groups,
- At least one second resin component which is based on silicon-oxygen and is in particular a siloxane and/or a silsesquioxane compound or a compound derivatized from these parent compounds and has at least one hydroxyl functionality
- a hardener and/or an initiating catalyst wherein quantitatively the resin component based on hydrocarbons predominates.
- the subject matter of the invention is a method for producing one or more components of an insulation system of an electrical rotating machine, comprising a main insulation, an internal potential control, an external corona protection and/or an end corona protection, having the following process steps:
- the powder coating is carried out by spraying the heated substrate and then cooling it--for example to room temperature.
- the wet painting is carried out by application, in particular by spraying and / or immersion of the wet paint and subsequent drying and / or removal of the solvent performed.
- the powder coating is carried out by immersing the rod or coil in a powder coating fluidized bed containing the powder coating formulation in powder form in an air stream.
- the provision of the powder coating formulation and/or the wet coating for the AGS and/or EGS is supplemented by the addition of electrically conductive filler, optionally present in several fractions.
- the powder coating and/or the wet coating is carried out automatically.
- the resin-resin or resin-hardener mixture which is solid at room temperature or prepared in a solvent for wet paint, also comprises insulating fillers, in particular inorganic and/or mineral fillers, in several fractions, in particular with regard to shape and Size, present, as well as sintering aids and/or additives, such as leveling and degassing additives.
- electrically conductive fillers are added to the powder paint formulation, optionally in several fractions.
- a resin-resin mixture is also present without a hardener, but with a catalyst or initiator if curing to form a duromer can take place via homopolymerization. However, if two different monomeric or oligomeric compounds cure to form a duromer, then there is a resin-hardener mixture that undergoes addition polymerization that requires a stoichiometric amount of hardener.
- the first present resin component which is, for example, solid or processed in a solvent to form the wet paint at room temperature, is, as mentioned, hydrocarbon-based with at least two epoxy groups, for example this resin component is selected from the group of epoxy resins, diglycidyl ether resins, novolaks and / or cycloaliphatic epoxy resins, and any mixtures of said compounds.
- R is -hydrogen, -aryl, -alkyl, -heterocycles, nitrogen, oxygen and/or sulfur-substituted aryls and/or alkyls.
- epoxy-functionalized components such as bisphenol F diglycidyl ether (BFDGE) or bisphenol A diglycidyl ether (BADGE), polyurethane and mixtures thereof are particularly suitable.
- BFDGE bisphenol F diglycidyl ether
- BADGE bisphenol A diglycidyl ether
- epoxidized novolaks or mixtures thereof are particularly suitable.
- the first resin component comprises a monomeric and/or oligomeric, in particular epoxidized novolak mixture with bisphenol A and/or bisphenol F diglycidyl ether, in particular with chain-extended bisphenol A and/or F, also in the form of a di- or higher - Epoxy hydrocarbon-based resin component.
- all epoxy resin components comprise two or more glycidyl ester and/or glycidyl ether and/or hydroxyl functionalities and/or that the resin formulation contains at least one compound acting as a hardener based on dicyandiamide and/or (poly)amine and/or or amino and/or alkoxy functional alkyl/aryl polysiloxane base.
- the second resin component that is present preferably comprises at least one monomeric and/or oligomeric resin component based on silicon and oxygen, with the term "resin” already implying that it is an organic one
- This is a silicon-oxygen compound based, for example, on alkyl and/or aryl polysiloxane and/or on silsesquioxane.
- a resin and/or a resin mixture is provided as the second resin component for the powder coating formulation, in which at least part of the resin mixture and/or resin-hardener mixture for the insulation system that hardens to form a duromer contains a siloxane-containing compound which forms a -[0-SiR 2 -0] n backbone in the fully cured duromer.
- R stands for all types of organic residues that are suitable for curing and/or crosslinking to form an insulating material that can be used for an insulation system.
- R stands in particular for -aryl, -alkyl, -heterocycles, nitrogen, oxygen and/or sulfur-substituted ones aryls and/or alkyls.
- R can be the same or different and can represent the following groups:
- - Alkyl for example -methyl, -propyl, -isopropyl, -butyl, -isobutyl, -tertbutyl, -pentyl, -isopentyl, -cyclopentyl and all other analogs up to dodecyl, ie the homologue with 12 carbon atoms;
- Aryl for example: benzyl, benzoyl, biphenyl, toluene, xylene and comparable aromatics, in particular for example all aryl radicals, with one or more rings whose structure corresponds to Hückel's definition of aromaticity, - Heterocycles: in particular sulfur-containing heterocycles such as thiophene, tetrahydrothiophene, 1,4-thioxane and homologues and/or derivatives thereof,
- Oxygen-containing heterocycles such as dioxanes
- Nitrogen-containing heterocycles such as those with -CN, -
- the Hückel rule for aromatic compounds refers to the fact that planar, cyclically conjugated molecules that contain a number of P electrons that can be represented in the form of 4n + 2 have a special stability that also called aromaticity.
- the monomeric or oligomeric second resin component functionalized for polymerization and having a -[O-S1R2-O] n backbone with one or more first resin components containing -[-CR1R2-] n backbone is selected from the group of the following compounds combined to form the resin mixture and/or resin-hardener mixture: undistilled and/or distilled, optionally reactively diluted bisphenol A diglycidyl ether, undistilled and/or distilled, optionally reactively diluted bisphenol F
- Glycidyl-based and/or epoxy-terminated aryl and/or alkyl siloxanes such as, for example, glycidoxy functi nalized, in particular glycidoxy-terminated, siloxanes.
- a siloxane such as 1,3-bis(3-glycidyloxypropyl)tetramethyldisiloxane, DGTMS, and/or glycidoxy-terminated phenyldimethylsiloxane and/or phenylmethylsiloxane in monomeric and/or oligomeric form is suitable , as well as in any mixtures and/or in the form of derivatives.
- hydroxy-functionalized polyphenylsiloxane-based compound from Wacker AG “Silres-603” is commercially available and is suitable here.
- silsesquioxanes or derivatives of silsesquioxane are suitable as the second resin component in the powder coating formulation based on silicon and oxygen.
- This is an organic silicon-oxygen-based compound with cage-like or polymeric structures that have a -[O-SiR2- 0-] n backbone, such as the examples shown below: in particular, R can be the same or different and can represent the following groups:
- - Alkyl for example -methyl, -propyl, -isopropyl, -butyl, -isobutyl, -tertbutyl, -pentyl, -isopentyl, -cyclopentyl and all other analogs up to dodecyl, ie the homologue with 12 carbon atoms;
- Aryl for example: benzyl, benzoyl, biphenyl, toluene, xylene and comparable aromatics, in particular for example all aryl radicals, with one or more rings whose structure corresponds to Hückel's definition of aromaticity,
- heterocycles in particular sulfur-containing heterocycles such as thiophene, tetrahydrothiophene, 1,4-thioxane and homologues and/or derivatives thereof,
- Nitrogen-containing heterocycles such as those with -CN, -CNO,-CNS, substituents on the ring or rings and
- the formulation also includes fillers, in particular spherical ones shaped and/or irregularly shaped fillers.
- the fillers can be crystalline and/or amorphous.
- the fillers are preferably based on silicon dioxide, for example they contain fused silica, ground quartz and/or quartz glass.
- the resistance of the sprayable powder paint formulation and/or wet paint coating can be increased by adding fillers, in particular mineral or/or synthetic fillers, such as quartz powder, fused silica, glass powder, in a mass fraction of, for example, 5% by weight to 65% by weight is increased when at least part of the resin is replaced with a partial discharge resistant component.
- the second resin component based on silicon instead of carbon is referred to as the partial discharge-resistant component. This can either be a polysiloxane or a silsesquioxane or one or a mixture of several derivatives of these silicon-containing compounds with oxygen.
- the use of the large mica flakes glued to form the strip can be dispensed with and the insulation material can be applied and produced in the form of a powder coating formulation or wet coating automatically by spraying and/or dipping.
- Partial discharge-resistant resins and resin mixtures are, for example, those in which the polymeric component is a component with a -[-O-S1R2-O-] n - backbone as a secondary component of the resin mixture and/or resin-hardener mixture, i.e. too few than 50 mol%, in particular less than 40 mol% and very preferably less than 30 mol% of the polymerizable resin mixture and/or resin-hardener mixture.
- Suitable hardeners are cationic and anionic hardening catalysts, such as organic salts, such as organic ammonium, sulfonium, iodonium, phosphonium and/or imidazolium salts and amines, such as tertiary amines, pyrazoles and/or imidazole compounds. Examples which may be mentioned here are 4,5-dihydroxymethyl-2-phenylimidazole and/or 2-phenyl-4-methyl-5-hydroxymethylimidazole. However, compounds containing oxirane groups, such as, for example, glycidyl ether, can also be used as hardeners.
- organic salts such as organic ammonium, sulfonium, iodonium, phosphonium and/or imidazolium salts and amines, such as tertiary amines, pyrazoles and/or imidazole compounds. Examples which may be mentioned here are 4,5-dihydroxymethyl-2-phenylimidazo
- the hardener can alternatively or additionally be partially or completely replaced by a compound with -[O-SiR 2 -0-] n backbone, also referred to here as a siloxane-based compound.
- a siloxane-based compound for example, one or more fractions of nanoparticulate filler are added, in particular those which are based, for example, on quartz, SiO 2 .
- an additive in particular a sintering additive, for example based on an organic phosphorus compound, is also added.
- the organic phosphorus compound catalyzes the merging and/or sintering of simultaneously present Si0 2 nanoparticles to form vitreous areas in the resin. For example, this creates a glass-like area as a barrier layer in the insulation system.
- a combination of the sintering additive and the nanoparticulate filler is preferably present in the formulation because, when an electrical discharge is present, this causes vitrified areas to form in the finished duromer, which exhibit a particularly good insulating effect. Recent storage of such ready-hardened insulation materials shows an increase in service life by a factor of 8.
- a powder paint and/or a wet paint for the automated production of all or at least some components of an insulation system of an electrical rotating machine is disclosed here for the first time.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Paints Or Removers (AREA)
- Organic Insulating Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021201664 | 2021-02-22 | ||
| PCT/EP2022/053760 WO2022175303A1 (de) | 2021-02-22 | 2022-02-16 | Isolationssystem für elektrische rotierende maschinen und verfahren zur herstellung dazu |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4294885A1 true EP4294885A1 (de) | 2023-12-27 |
Family
ID=80628613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22707666.8A Pending EP4294885A1 (de) | 2021-02-22 | 2022-02-16 | Isolationssystem für elektrische rotierende maschinen und verfahren zur herstellung dazu |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20240318032A1 (de) |
| EP (1) | EP4294885A1 (de) |
| CN (1) | CN116964164A (de) |
| WO (1) | WO2022175303A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021201666A1 (de) * | 2021-02-22 | 2022-08-25 | Siemens Aktiengesellschaft | Nutisolationssystem für eine elektrische rotierende Maschine, Verfahren zur Herstellung eines Nutisolationssystems |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6103157A (en) * | 1997-07-02 | 2000-08-15 | Ciba Specialty Chemicals Corp. | Process for impregnating electrical coils |
| EP1354916A1 (de) * | 2002-04-17 | 2003-10-22 | Abb Research Ltd. | Selbstheilende Epoxidharze für die Herstellung von elektrischen Isolierungen |
| DE102010019724A1 (de) * | 2010-05-07 | 2011-11-10 | Siemens Aktiengesellschaft | Elektrisches Isolationsmaterial und Isolationsband für eine elektrische Isolation einer Mittel- und Hochspannung |
| DE102011083228A1 (de) * | 2011-09-22 | 2013-03-28 | Siemens Aktiengesellschaft | Isoliersysteme mit verbesserter Teilentladungsbeständigkeit, Verfahren zur Herstellung dazu |
| ITTO20131021A1 (it) * | 2013-12-13 | 2015-06-14 | Alenia Aermacchi Spa | Resina epossidica multifunzionale con accresciuta resistenza alla fiamma |
| DE102015209594A1 (de) * | 2015-05-26 | 2016-12-01 | Siemens Aktiengesellschaft | Widerstandsbelag für einen Glimmschutz einer elektrischen Maschine |
| EP3168268B1 (de) * | 2015-11-13 | 2018-09-26 | Schwering & Hasse Elektrodraht GmbH | Elektroisolierlack und verfahren zur herstellung eines elektroisolierlackes |
| EP3460959A1 (de) * | 2017-09-20 | 2019-03-27 | Siemens Aktiengesellschaft | Elektrisches isolationsmaterial und/oder imprägnierharz für die wickelbandisolierung einer mittel- und/oder hochspannungsmaschine sowie ein isolationssystem daraus |
| DE102018202058A1 (de) * | 2018-02-09 | 2019-08-14 | Siemens Aktiengesellschaft | Formulierung zur Herstellung eines Isolationssystems, elektrische Maschine und Verfahren zur Herstellung eines Isolationssystems |
| DE102018218866A1 (de) * | 2018-11-06 | 2020-05-07 | Siemens Aktiengesellschaft | Elektrisches Betriebsmittel mit Isolationssystem, sowie Verfahren zur Herstellung des Isolationssystems |
-
2022
- 2022-02-16 US US18/547,236 patent/US20240318032A1/en active Pending
- 2022-02-16 WO PCT/EP2022/053760 patent/WO2022175303A1/de not_active Ceased
- 2022-02-16 CN CN202280016460.6A patent/CN116964164A/zh active Pending
- 2022-02-16 EP EP22707666.8A patent/EP4294885A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022175303A1 (de) | 2022-08-25 |
| US20240318032A1 (en) | 2024-09-26 |
| CN116964164A (zh) | 2023-10-27 |
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