Siemens Aktiengesellschaft

Juergen Huber

Matthias Uebler

Dieter Schirm

Wolfgang Rogler

Bernhard Klaussner

Wolfgang Von Gentzkow

Lothar Schoen

Dieter Wilhelm

Peter Groeppel

Peter Hein

Christian Meyer

Ingo Schuering

Gerhard Piecha

Irene Olbrich

Juergen Lange

An impregnating resin, e.g., a catalytically hardenable impregnating resin for the conductor of an electrical machine, may include at least one reactive resin mixed with at least one reactive diluent and a hardening catalyst, e.g., for cationic, anionic or coordinate polymerization of the impregnating resin. The properties of the impregnating resin or use thereof may be improved by virtue of the reactive diluent containing a heterocyclic four-membered ring. The impregnating resin may be part of a main insulation of a conductor arrangement, which may in turn be installed in an electrical coil or other electrical machine.

Impregnating resin, conductor arrangement, electrical coil and electrical machine

Tape adhesives suitable for impregnating processes for insulation systems are described. Embodiments of the tape adhesives include solid insulation material such as mica, anhydride-free impregnating resins and accelerators for the anhydride-free impregnating resins. The tape adhesives may be adjusted with respect to the reactivity of the accelerators for the anhydride-free impregnating resins in relation for the storage stability of the overall insulation systems.

Tape adhesive for an insulating tape in an insulation system and an insulation system

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.

Insulation system for electrical machines

The invention relates to a slot sealing material () for an electric machine, which for accommodating an electric conductor arrangement () comprises at least one slot () having a slot opening (). Said slot sealing material contains a magnetic filler, especially a soft-magnetic filler, and a reaction resin mixture comprising at least one resin component and a curing agent component. To improve the temperature resistance and mechanical strength of the slot sealing material, a dianhydride is used as curing agent component.

Slot sealing material, slot seal and method for producing a slot seal

Casting compound suitable for casting an electronic module, in particular a large-volume coil such as a gradient coil, which is composed of a support material forming a matrix, one or more fillers made of inorganic microparticles, and at least one filler made of polymer nanoparticles.

Casting compound suitable for casting an electronic module, in particular a large-volume coil such as a gradient coil

A superconducting coil for a magnetic resonance apparatus is formed by one or more wound superconducting conductors that are embedded in a cured sealing compound, with a filler composed only of nanoparticles added to the sealing compound.

Superconducting coil cast in nanoparticle-containing sealing compound

In a rotating electrical machine having a permanent-magnet rotor, the tubular, highly thermally conductive supporting body of the stator forms a thermal bridge to a cooling means. In order to allow the end windings of the stator windings to be cooled effectively as well, the end windings also each have an associated thermal bridge, which completely fills the space between the end windings and the supporting body of the stator. This thermal bridge is of solid construction having a solid ring, which is connected to the supporting body of the stator with a force fit, and a cast-resin body which is cast into this solid ring. The cast-resin body has a thermal conductivity of more than 1.6 W/mK and, for this purpose, contains a powdery, highly thermally conductive filler making up a proportion of 50 to 90% by weight, preferably an aluminum nitride coated with silicon dioxide.

Rotating electrical machine having a permanent-magnet rotor

The invention provides epoxy resin compounds for manufacturing prepregs and composite materials, which can be obtained inexpensively and have good processibility, and provide--without having to add flameproofing agents--virtually inflammable molded materials with a high glass transition temperature. The epoxy resin compounds contain the following constituents:

Epoxy resin compounds in admixture with glycidyl phosphorus compounds

The invention provides epoxide resin molding compositions for protectively covering semiconductor components, which are accessible in a cost-effective manner and have good processibility. The epoxide resin molding compositions provide virtually inflammable molded materials with a high glass transition temperature and a low thermal expansion coefficient without the addition of flameproofing agents, when they contain the following constituents:

Growing community of inventors

Erlangen, Germany

Juergen Huber