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Bengt Rydholm

Jan-Erik Eriksson

Mats Leijon

Lars Gertmar

Peter Carstensen

Peter Templin

Hongliang Yang

Bertil Larsson

Claes Ivarson

Helmut Hackl

Jean-Marie Galpin

Bruno Langlet

Jean-Luc Curé

Nicolas Triolet

Fredrik Sandberg

Bertil Berggren

Magnus Hallbäck

Stefan Milton

Gunnar Kylander

Goran Holmstrom

Chandur Sadarangani

Peter Löfgren

Erik Svensson

Jan-Anders Nygren

Mats Molander

Tord Kroon

Bengt Rothman

Conny Svahn

Sören Berggren

Carl-Fredrik Lindberg

Lidong Teng

Stefan Israelsson Tampe

Alberti Backlund

Erland Sörensen

Mons Hölleland

Bengt Goran

Leif Johansson

Bo Hernnäs

Göte Tallbäck

Olof Sjödén

Hans-Olof Kalldin

Kenneth Johannesson

Gunnar Davidsson

Jens P Zinck

Sven Karlsson

Per Lennart Eriksson

Thierry Lecoester

Tord Lindblad

Alf Lundström

Eleonor Olsson

Monika Zielinska

A method of controlling an electromagnetic stirrer arranged around a submerged entry nozzle (SEN) of a tundish provided with a stopper rod to control throughput of the tundish, the SEN being configured to provide tapping of molten metal from the tundish and the electromagnetic stirrer being configured to generate a rotating magnetic field in the SEN, wherein the method includes controlling the electromagnetic stirrer to operate only when a gas flow rate through the stopper rod is in a first range of 1.5 NL/min to 20 NL/min.

Method and stirring system for controlling an electromagnetic stirrer

An assembly for a metal-making process, having: a tundish, a submerged entry nozzle (SEN) configured to provide tapping of molten metal from the tundish, and an electromagnetic stirrer arranged around the SEN, the electromagnetic stirrer having a closed and integral SEN-enclosing portion provided with coils for generating a rotating electromagnetic field in the SEN, the SEN-enclosing portion providing a circumferentially closed and integral annular passage through which the SEN extends, wherein the electromagnetic stirrer is immovably mounted relative to the tundish and relative to the SEN.

Assembly for a metal-making process

A continuous casting device includes a mould, a nozzle, and an electromagnetic stirrer provided around the nozzle above the mould, the stirrer including a core of a magnetic material that extends circumferentially around the nozzle and a plurality of windings wound around the core. The windings are wound around a cross section of the core as seen in the circumferential direction of the core.

Continuous casting device

A furnace plant including at least one furnace vessel comprising side walls, a bottom and a roof. At least one heater is configured to heat metal in the furnace vessel. A compartment includes sidewalls lined with refractory material. The compartment forms an extension of the furnace vessel. At least one electromagnetic stirrer is arranged outside and adjacent to the compartment. A refractory plate is arranged inside the compartment. The refractory plate includes an upper edge configured to be positioned below a meniscus of molten metal and includes a lower edge positioned spaced apart from a bottom of the compartment. The plate is arranged such that a gap between the plate and a wall of the compartment increases toward the bottom of the compartment.

Device for submerging material into liquid metal by an electromagnetic stirrer

A device and a method for stabilising a metallic object of magnetic material. The metallic object is transported along a transportation path or plane. The plane includes a transportation direction and is parallel to the longitudinal direction of the object therein. A sensor is arranged to sense the valve of a parameter depending on the position of the object with respect to the plane. An electromagnetic actuator is arranged to apply a magnetic force to the object in respone to the sensed position. The magnetic force has a force component directed transversely to the transportation direction and transversely to the plane.

Device and a method for stabilizing a web or a filament of ferromagnetic material moving in one direction

A rotating electrical machine and method for making the machine, where the machine includes a high-voltage stator winding and elongated support devices for supporting the winding. The machine and method employ an arrangement of cable that is made of inner conductive strands, covered with a first semiconducting layer, which is covered with an insulating layer, which is covered with a second semiconducting layer. The cable is wound in slots in the stator such that separate cable lead-throughs are positioned in specific arrangements with respect to each other and in slots of the stator. The arrangement of the cable in the stator protects the integrity of the respective components in the cable and particularly the second semiconducting layer.

Rotating electrical machine having high-voltage stator winding and elongated support devices supporting the winding and method for manufacturing the same

The magnetic circuit of a generator in a hydro-generator plant is arranged to directly supply a high supply voltage of 20-800 kV, preferably higher than 36 kV. The generator is provided with solid insulation and its winding includes a cable () comprising one or more current-carrying conductors () with a number of strands () surrounded by at least one outer and one inner semiconducting layer () and intermediate insulating layers (). The outer semiconducting layer () is at earth potential. The stator winding may be produced with full or fractional slot winding, the phases of the winding being Y-connected. The Y-point may be insulated and protected from over-voltage by means of surge arresters, or else the Y-point may be earthed via a suppression filter. The invention also relates to a hydro-generator plant, a generator included in the plant and a procedure for building such a plant.

Hydro-generator plant

A conductor and a rotating electric high-voltage machine that includes the conductor has a cable configured for high-voltage operation. The cable may be included as a winding for the rotating electric high-voltage machine. The conductor includes a first strand that is clad with an electrically insulating layer, and a second strand that is uninsulated whereas the first strand and the second strand are arranged in two or more layers of strands. The two or more layers of strands are insulated from one another. Furthermore, the first and second layers of the two or more layers of strands are arranged around a central core where the central core is at least one of an air core and a core of another material. The second strand is positioned so as not to be electrically contacting any other uninsulated strand.

Conductor for high-voltage windings and a rotating electric machine comprising a winding including the conductor

Rotor for a short circuited alternating current motor

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Västerås, Sweden

Bengt Rydholm