Abb Research Ltd.

Abb Schweiz Ag

Abb Technology Ag

Arthouros Iordanidis

Benjamin Weber

Felix Greuter

Martin Seeger

Jasmin Smajic

Lutz Niemeyer

Jens Tepper

Lukas Zehnder

Bernardo Galletti

Thorsten Steinmetz

Frank Cornelius

Marcos Bockholt

Martin Carlen

Patrick Stoller

Klaus Kraft

Burak Esenlik

Toufann Chaudhuri

Rudi Velthuis

Bhavesh Patel

Markus Abplanalp

Jürgen Steinke

Maciej Mruczek

Emmanouil Panousis

Rudolf Gati

Joerg Lehmann

Mahesh Dhotre

Michael Schwinne

Daniel Over

Michael Weiss

Christian Franck

Christoph Reutlinger

Bhavesch Patel

Bernhard Petermeier

Dariusz Maciocha

Benjamin Wuthrich

Bogdan Cranganu-Cretu

Roger Lüscher

Vincent Dousset

Jari Tukia

Franceso Pisu

Stefan Arndt

Benjamin WÜTHRICH

A laminated busbar includes: a base body comprising conducting layers and insulating material to electrically insulate the conducting layers from each other. The conducting layers and the insulating material are clamped together by mechanical means and/or a profile is connected to the base body. In an embodiment, no glue or adhesive is arranged between at least one conducting layer and at least one insulating material.

Laminated busbar and arrangement comprising laminated busbars

An exemplary power-electronic switching system has a plurality of switching units, wherein each switching unit includes a housing and at least one switching module which is arranged within the housing. A mounting unit has a holding apparatus, on which the housings of the switching units are arranged. The holding apparatus includes an insulation material for electrically insulating the holding apparatus from the housings of the switching units and the housings of the switching units from one another. The insulation material allows the housings of the switching units of the switching system to have different voltage potentials from one another and additionally can be realized in a simple and space-saving manner and easily be assembled. In addition, the housing of each switching unit includes a material for at least partially shielding an electric and magnetic field.

Power electronic switching system

A circuit breaker including two contacts, a pressurization chamber, a nozzle arrangement designed to blow an arc in a quenching region, with a narrowest passage of a pressurization chamber outflow channel to be passed by outflowing quenching gas defining a pressurization chamber outflow limiting area, a narrowest passage of a nozzle channel to be passed by outflowing quenching gas defining a nozzle outflow limiting area, the smaller area of which defining an absolute outflow limiting area, with quenching gas having a global warming potential lower than the one of SFover an interval of 100 years; wherein a ratio of the pressurization chamber outflow limiting area to the nozzle outflow limiting area is less than 1.1:1.

Circuit breaker

An encapsulated delta transformer for medium to high voltages includes a hermetically sealed housing that encloses a volume, a delta shaped transformer arranged in the housing, and a passageway for a fluid. The passageway protruding through the housing and the volume enclosed by the passageway is in fluidal connection to an outside of the housing.

Gas-insulated delta transformer

The disclosure is related to a dry transformer, which includes a transformer core with at least two parallel limbs and upper and lower yokes, and at least two hollow cylindrical coils, each arranged as neighbored coils around a limb of the at least two parallel limbs. A cooling system can include at least one wall-like diaphragm in-between the neighbored coils, which is in parallel to the orientation of the limbs.

Cooling system for dry transformers

An electrical transformer is disclosed which includes an enclosure; a magnetic core assembly arranged within the enclosure, the magnetic core assembly having a first core limb, a second core limb and a third core limb; and three coil assemblies having a first coil assembly, a second coil assembly, and a third coil assembly. At least two diaphragms are arranged within the enclosure, the diaphragms being essentially sealed to a first outermost coil of the first coil assembly, and arranged for guiding a cooling fluid in series through a first inner fluid duct, a second inner fluid duct, a third inner fluid duct and an extra-coil volume along outsides of third, second and first outermost coil coils of the third, second and first coil assemblies.

Electrical transformer with diaphragm and method of cooling same

An exemplary high voltage circuit breaker includes an interruption chamber that is filled with an extinguishing agent. The interruption chamber having at least two separable arcing contact pieces that are coaxially arranged and an arcing zone in which an electric arc is producible during an interruption process. The interruption chamber includes at least two inlets and at least one outlet located in between the two inlets. The inlets and the at least one outlet are connected with the arcing zone such that the electric arc is extinguishable in at least three arc interruption zones by means of extinguishing flows streaming out of the at least two inlets into the arcing zone upon pressurization and introduction of a portion of the extinguishing agent in the arcing zone, and leading an amount of the extinguishing flows through the outlet out of the arcing zone.

A high-voltage circuit breaker includes two arcing contacts, which are capable of moving relative to one another along an axis, an insulating nozzle, a heating volume for accommodating quenching gas, a heating channel, and an overpressure valve. The pressure of the quenching gas is based on the energy of a switching arc, which is formed when the breaker opens and generates arcing gas, and the heating channel opens out, with axial alignment, into the heating volume. The heating channel connects an arc zone, and the overpressure valve limits the pressure of the quenching gas by opening a relief duct, which opens out into an expansion space. In high-current switching, the pressure of the arcing gases in the arc zone is limited, and the quality of the quenching gas stored in the heating volume is improved, due to the relief duct having an outflow section extending in the radial direction.

Gas-insulated high-voltage circuit breaker with a relief duct which is controlled by an overflow valve

Growing community of inventors

Baden, Switzerland

Arthouros Iordanidis