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

IPC: H02K3/40 ,  H02K3/30 ,  C09J9/02 ,  C09J7/30 ,  C09J7/21 ,  C09J11/06 ,  C09J11/04

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.

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

IPC: C09J7/38 ,  H01B3/44 ,  C09J9/00 ,  C09J7/21

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.

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

IPC: H01B3/40 ,  H02K3/30 ,  C08K5/105

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.

公开(公告)号：US11121599B2

公开(公告)日：2021-09-14

申请号：US15036653

申请日：2014-11-06

Applicant: SIEMENS AKTIENGESELLSCHAFT

Inventor： Jürgen Huber ,  Bernhard Klaussner ,  Dieter Schirm

IPC: H02K3/493 ,  H02K3/30 ,  H02K15/00 ,  H01B3/40 ,  B29C35/08 ,  B29K63/00 ,  B29K105/16 ,  B29K505/12

Abstract: The invention relates to a slot sealing compound (7) for an electrical machine that comprises at least one slot (2) with a slot opening (5) for receiving an electrical conductor arrangement (3). Said slot sealing compound (7) contains a magnetic filler material, particularly a soft-magnetic filler material, and a reactive resin mixture that comprises at least one resin component. In the interests of improving storage stability for said slot sealing compound (7), the components thereof are selected to be suitable for cationic polymerisation. A catalyst, provided to accelerate the cationic polymerisation of said reactive resin mixture, is also added to said slot sealing compound (7).

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

IPC: C08G59/50 ,  C08G59/68

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.

公开(公告)号：US20170310184A1

公开(公告)日：2017-10-26

申请号：US15515807

申请日：2015-09-07

Applicant: Siemens Aktiengesellschaft

Inventor： Juergen Huber ,  Bernhard Klaussner ,  Dieter Schirm ,  Matthias Uebler

IPC: H02K3/30 ,  H01B3/40 ,  H02K15/12 ,  H02K3/40

CPC classification number: H02K3/30 ,  H01B3/40 ,  H02K3/40 ,  H02K15/12

Abstract: The present disclosure relates to electrical machines. The teachings thereof may be embodied in insulation systems for electrical machines, more particularly in the high-voltage range, for example, in an insulation system for electrical machines including: an insulator comprising a porous insulating material; an impregnator comprising a catalytically or thermally curable resin material having oxirane functionalities, or a mixture of different reactive resin materials having oxirane functionalities; and at least one thermally activatable or encapsulated hardener material.

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

IPC: H01B3/40 ,  H02K3/30 ,  H02K15/12 ,  C08L63/00 ,  C07D233/88 ,  H01B3/04

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.

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.

公开(公告)号：US10218238B2

公开(公告)日：2019-02-26

申请号：US15561426

申请日：2016-01-29

Applicant: Siemens Aktiengesellschaft

Inventor： André Grübel ,  Dieter Schirm

IPC: H02K3/493 ,  C09J11/00 ,  H02K15/00 ,  C09J9/00 ,  C08K9/10 ,  C08K7/28 ,  C08K7/22

Abstract: A slot-closing device for closing a slot in a stator or a rotor of an electric machine includes a closure element which contains a ferromagnetic material. An adhesive layer disposed on the closure element is designed to expand and harden when heated. The adhesive layer contains a thermally activatable blowing agent configured as an expansion element which contains a closed cavity filled with gas. The cavity is partially enclosed by a thermoplastic resin in the expansion element.

公开(公告)号：US20180241271A1

公开(公告)日：2018-08-23

申请号：US15514955

申请日：2015-09-17

Applicant: Siemens Aktiengesellschaft

Inventor： Andre GRUEBEL ,  Dieter Schirm

IPC: H02K3/38 ,  H02K3/30 ,  H02K15/12 ,  B29C70/28

CPC classification number: H02K3/38 ,  B29C70/28 ,  B29K2105/16 ,  B29L2031/7498 ,  H02K3/30 ,  H02K3/34 ,  H02K15/12

Abstract: An active part of an electrical machine, such as a rotor or a stator, an electrical machine having the active part, which has a main body and a winding that is surrounded by an encapsulation compound, where the encapsulation compound has at least three regions, where the winding extends through the main body in a slot in a first region, where the winding surrounded by the encapsulation compound projects out of the main body at least in a third region, and which has at least a second region arranged between the first region and the third region in the active part, where the encapsulation compound has a different composition in the second region than in the first region or the third region.