Abb Schweiz Ag

Hitachi Energy Switzerland Ag

Abb Power Grids Switzerland Ag

Jan Carstensen

Martin Seeger

Nitesh Ranjan

Patrick Stoller

Denis Tehlar

Torsten Votteler

Raffael Buehler

Frank Kassubek

Martin Kristoffersen

Elham Attar

Magne Saxegaard

Enea Bianda

Seila Rodriguez-Vilches

Stanley Lohne

Ståle Talmo

Bernardo Galletti

Markus Abplanalp

Emmanouil Panousis

Markus Bujotzek

Michael Schwinne

Angelos Garyfallos

Daniel Over

Gabriel Lantz

Gabriel Ortiz

Felix Theodor Erich Rager

Yacine Babou

Andreas Wetzel

A Dielectric Barrier Discharge system controller for controlling a fluid treatment by a Dielectric Barrier Discharge system is provided. Therein, the strength of an effect caused by a discharge created by the Dielectric Barrier Discharge system is monitored, and the generation of high-voltage pulses by the high-voltage pulse generator is controlled. The controlling of the generation of the high-voltage pulses is adapted based on the received sensor data.

Dielectric barrier discharge for ballast water treatment using optimized voltage shape control

A pulse generator and a method for generating pulses are provided. The pulse generator includes at least one first transmission line with a first and a second end; at least one second transmission line with a first and a second end; a voltage source; a switching unit; and a charge control device. The charge control device is adapted to connect an output of the voltage source to the first end of the at least one first transmission line. A first switch Sin the switching unit is adapted to connect or disconnect the second end of the at least one first transmission line to the first end of the at least one second transmission line for predetermined time spans. A second switch Sin the switching unit is adapted to connect or disconnect the first end of the at least one second transmission line to a fixed potential. The opening or closing states of Sand Sin the switching unit are mutually exclusive. A second end of the at least one second transmission line is adapted to be connected to a load. The switching unit is further adapted to operate the first switch, S, and the second switch, S, in a predetermined order to alter a pre-charging state of the first transmission line.

Transmission line-based short pulse generator with energy recovery

The present invention relates to a device for interrupting non-short circuit currents only, and in particular relates to a disconnector, more particularly high voltage disconnector, or to an earthing switch, more particularly make-proof earthing switch, and further relates to a low voltage circuit breaker. The device comprises at least two contacts movable in relation to each other between a closed state and an open state and defining an arcing region, in which an arc is generated during a current interrupting operation and in which an arc-quenching medium comprising an organofluorine compound is present. According to the application, a counter-arcing component is allocated to the arcing region, the counter-arcing component being designed for counteracting the generation of an arc and/or being designed for supporting the extinction of an arc.

Device for interrupting non-short circuit currents only, in particular disconnector or earthing switch

A ballast water treatment apparatus and a ballast water treatment system having a ballast water treatment apparatus are provided. The ballast water treatment apparatus includes a ballast water transport line configured to transport ballast water between a first location and a second location, the transported ballast water being passed through at least one injector, and a plasma generation device configured to be fed with a feed gas optionally comprising oxygen, and configured to generate a feed gas plasma by a streamer type discharge in a discharge area to provide a treated gas at a treated-gas outlet. The injector includes a liquid passage having an area constructed such as to increase a velocity of the passed-through water in a region of increased velocity, and an injector gas inlet provided in the region of increased velocity. The treated-gas outlet is in gaseous connection with the injector gas inlet.

Ballast water treatment apparatus and ballast water treatment system

A load-break switch has a housing holding insulation gas at ambient pressure; a first main contact and a second main contact being movable relative to each other in an axial direction of the switch; a first arcing contact and a second arcing contact being movable relative to each other in the axial direction and defining an arcing region where an arc is formed during a current breaking operation, wherein the arcing region is located radially inward from the first main contact; a pressurizing system pressurizing a quenching gas during the current breaking operation; and a nozzle system arranged to blow the pressurized quenching gas onto the arc. The first main contact includes at least one pressure release opening to allow gas flow in a radial outward direction. A total area of the pressure release opening suppresses a reduction of gas flow out of the pressure release opening.

Gas-insulated load break switch and switchgear comprising a gas-insulated load break switch

A gas-insulated low- or medium-voltage load break switch includes: a housing defining a housing volume for holding an insulation gas at an ambient pressure; a first arcing contact and a second arcing contact arranged within the housing volume, the first and second arcing contacts being movable in relation to each other along an axis of the load break switch and defining a quenching region in which an arc is formed during a current breaking operation; a pressurizing system having a pressurizing chamber arranged within the housing volume for pressurizing a quenching gas from an ambient pressure pto a quenching pressure pduring the current breaking operation; and a nozzle system arranged within the housing volume for blowing the pressurized quenching gas in a subsonic flow pattern from the pressurization chamber onto the arc formed in the quenching region during the current breaking operation. The nozzle system includes at least one nozzle arranged for blowing the quenching gas from an off-axis position predominantly radially inwardly onto the quenching region.

Gas-insulated low- or medium-voltage load break switch

Growing community of inventors

Waldshut-Tiengen, Germany

Jan Carstensen