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公开(公告)号：US20240006948A1
公开(公告)日：2024-01-04
申请号：US18251492
申请日：2021-11-02
Applicant: Siemens Aktiengesellschaft
Inventor： Jürgen Huber , Dieter Schirm , Matthias Übler , Steffen Lang , Torsten Rossow , Michael Nagel
CPC classification number: H02K3/40 , H02K3/30 , C09J9/02 , C09J7/30 , C09J7/21 , C09J11/06 , C09J11/04 , C09J2203/326 , C09J2301/408 , C09J2301/414 , C09J2429/00 , C09J2463/00
Abstract: Various embodiments of the teachings herein include a corona shielding tape for further processing to give an insulation system comprising an impregnated winding with potential control via outer corona shielding “AGS” and/or internal potential controller “IPS” and/or terminal corona shielding “EGS”, the insulation system being producible by impregnating the winding with an anhydride-free and resin-based impregnating agent at 45-85° C. and under reduced pressure. The corona shielding tape may include: a carrier tape; an electrically conductive and/or partly conductive filler in a polymer matrix; and a tape accelerator suitable for curing and/or gelation of the impregnating agent. The polymer matrix contains at least one polyvinylalcohol and/or a polyvinylalcohol copolymer. The accelerator is selected from the group consisting of: superacids and superacid salts suitable for acceleration of a cationic homopolymerization of the resin-based anhydride-free impregnating agent.
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公开(公告)号：US20180215960A1
公开(公告)日：2018-08-02
申请号：US15745530
申请日：2016-05-19
Applicant: Siemens Aktiengesellschaft
Inventor： Jürgen Huber , Dieter Schirm , Matthias Übler
Abstract: The present disclosure relates to insulation. Teachings thereof may be embodied in a solid insulation material, especially in tape form, the use thereof in a vacuum impregnation process and to an insulation system produced therewith, and also an electrical machine comprising the insulation system, especially for the medium- and high-voltage sector, namely for medium- and high-voltage machines, especially rotating electrical machines in the medium- and high-voltage sector, and to semifinished products for electrical switchgear. For example a solid insulation material with an anhydride-free impregnating agent may include: a carrier; a barrier material; a curing catalyst; and a tape adhesive. The curing catalyst and the tape adhesive are inert toward one another but react under the conditions of a vacuum impregnation process if combined with an anhydride-free impregnating agent having gelation times of 1 h to 15 h at impregnation temperature. The tape adhesive is free of oxirane groups and includes at least two free hydroxyl groups.
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公开(公告)号：US20220251412A1
公开(公告)日：2022-08-11
申请号：US17622737
申请日：2020-06-02
Applicant: Siemens Aktiengesellschaft
Inventor： Jürgen Huber , Steffen Lang , Niels Müller , Michael Nagel , Matthias Übler
Abstract: Various embodiments include an impregnation formulation for a wrapping tape insulation of an electrical machine. The formulation comprises: a resin formulation with an epoxy base resin and a first component; and a hardener formulation with a hardener. The resin formulation reacts when combined with the hardener formulation to produce an insulation material. The first component includes a saturated and/or unsaturated epoxycycloalkyl group. A glass transition temperature of the insulation material is elevated compared to an impregnation formulation without the first component.
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4.发明申请公开(公告)号：US20200066421A1
公开(公告)日：2020-02-27
申请号：US16482198
申请日：2018-01-25
Applicant: Siemens Aktiengesellschaft
Inventor： Mario Brockschmidt , Jürgen Huber , Regina Mühlberg , Irene Olbrich , Torsten Rossow , Matthias Übler , Dieter Schirm
Abstract: A wrapping tape insulation system is provided which includes an insulating tape preferably produced by vacuum pressure impregnation. The provided tape comprises a tape adhesive, a tape accelerator and a resin wherein the tape accelerator may comprise an imidazole covalently bonded via the amino function to an acrylate by aza-Michael addition.
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公开(公告)号：US10522265B2
公开(公告)日：2019-12-31
申请号：US15743955
申请日：2016-05-20
Applicant: Siemens Aktiengesellschaft
Inventor： Jürgen Huber , Dieter Schirm , Matthias Übler
IPC: H01B3/40 , C08K5/3445 , H02K3/30 , C08L63/00 , C08G59/50
Abstract: The invention relates to a solid, in particular strip-shaped insulation material, to the use thereof in a vacuum impregnation method and a thus produced insulation system and to an electric machine using the insulation system, in particular for the medium and high voltage range, that is for medium and high voltage machines, in particular rotating electric machines in the medium and high voltage range and to semi-finished products for electric switching systems. According to the invention, the curing catalyst is a covalently-bridged di-imidazol derivative and/or a covalently-bridged di-pyrazol derivative.
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Patent Agency Ranking
公开(公告)号：US20220238252A1
公开(公告)日：2022-07-28
申请号：US17614683
申请日：2020-04-08
Applicant: Siemens Aktiengesellschaft
Inventor： Jürgen Huber , Dieter Schirm , Matthias Übler
Abstract: Various embodiments of the teachings herein include a solid insulation material based on a resin containing epoxy groups for production of an anhydride-free insulation system by means of VPI. The material comprises: an anhydride-free curing catalyst; and an additive for improving distribution of the anhydride-free curing catalyst, wherein the additive comprises a phenyl carboxylate. The additive is present in an amount based on the epoxy groups in the resin containing epoxy groups which is present in the impregnating agent of at least 0.1% in stoichiometric terms.
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公开(公告)号：US20210376681A1
公开(公告)日：2021-12-02
申请号：US16645590
申请日：2018-09-13
Applicant: Siemens Aktiengesellschaft
Inventor： Jürgen Huber , Steffen Lang , Michael Nagel , Matthias Übler , Niels Müller
IPC: H02K3/30 , H02K3/40 , C08G59/30 , C09D163/00
Abstract: Various embodiments include an insulation material and/or impregnation resin for a wrapping tape insulation, comprising: a base resin curing to a thermoset; and a curing agent. The base resin comprises a siloxane-containing compound forming a —SiR2—O— backbone in the thermoset.
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公开(公告)号：US20210102027A1
公开(公告)日：2021-04-08
申请号：US16464587
申请日：2017-11-28
Applicant: Siemens Aktiengesellschaft
Inventor： Jürgen Huber , Dieter Schirm , Matthias Übler
Abstract: Various embodiments include a potting compound comprising: a sterically hindered epoxy resin; and a hardener including a basic compound having a pKB, measured in anhydrous acetonitrile, of 23 or higher.
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公开(公告)号：US20190039121A1
公开(公告)日：2019-02-07
申请号：US16078976
申请日：2017-02-07
Applicant: Siemens Aktiengesellschaft
Inventor： Hermann Bödinger , Stefan Denneler , Matthias Übler
Abstract: The invention relates to a binder system for production of a slip, e.g., for a green casting core compact. The invention also relates to a component that has been produced by means of such a slip. The invention may be employable for relatively inexpensive production of complex metal blades in all kinds of gas turbines and propulsion turbines. According to an embodiment, the invention provides a novel binder system that combines short gel times at room temperature without solvent while retaining a high glass transition of 55 to 60° C. with shortened hardening periods.
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10.发明申请公开(公告)号：US20220235199A1
公开(公告)日：2022-07-28
申请号：US17639814
申请日：2020-08-11
Applicant: Siemens Aktiengesellschaft
Inventor： Jürgen Huber , Mario Brockschmidt , Torsten Rossow , Dieter Schirm , Matthias Übler
Abstract: Various embodiments of the teachings herein include a cationic tape accelerator for use in a process for producing an insulation system by impregnation and/or encapsulation with an anhydride-free impregnating agent. The tape accelerator comprises an ionogenic compound of a sulfonium-containing cation and a hexafluoroantimonate anion.
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