Abb Schweiz Ag

Abb Technology Oy

Teemu Salmia

Hanna Rapinoja

Pertti Seväkivi

Jukka-Pekka Kittilä

Pyry Hartikainen

Marko Raatikainen

Tero Herrala

Mikko Taulanne

Jukka-Peeka Kittilä

A field of enclosures for electronics and electrical components within electric devices, such as electric drive devices for industrial applications, e.g. for working machine and marine applications, and more particularly to an electronics enclosure arrangement for an electric device, and to an electric device. The electronics enclosure arrangement according to the present invention is arranged for an electric device, the electric device including one or more circuit boards and electronics components assembled on the one or more circuit boards, wherein the electronics enclosure arrangement includes an electronics enclosure cover; and an at least one volume element part, arranged in the space between the electronics enclosure cover and the one or more circuit boards with the electronics components.

Electronics enclosure arrangement for an electric device and an electric device

The arrangement includes a pressure relief hatch for closing an opening in a wall in an electric cabinet, which. includes a body having an outer surface, an opposite inner surface, an outer perimeter, and a thickness. The body includes a centre portion with a first thickness, an intermediate portion with a second thickness, and an outer portion with a third thickness. The first thickness is greater than the third thickness and the second thickness decreases in a radially outward direction from the first thickness to the third thickness. A spring keeps the pressure relief hatch in a closed position in the opening during normal operation of the electric cabinet.

Pressure relief arrangement

A gate driver circuit and a method of operating a gate driver circuit. The gate driver circuit comprising a high auxiliary voltage rail and a low auxiliary voltage rail for receiving high auxiliary voltage and low auxiliary voltage, output stage connected to the auxiliary voltage rails and comprising a control input and an output terminal for providing an output voltage of the gate driver, plurality of series connections of controllable switches and resistive components, wherein a first part of the plurality of series connections is connected between the high auxiliary voltage rail and control input of the output stage, and a second part of the plurality of series connections is connected between the low auxiliary voltage rail and control input of the output stage, and a control circuit for controlling the controllable switches for providing a control voltage and a control current to the control input of the output stage.

Driver circuit

A method and an arrangement of limiting temperature variations in a semiconductor component of a switching converter, the method comprising determining a quantity relating to operation temperature of the switching converter, determining temperature of the semiconductor component, selecting a maximum value of switching frequency of the switching converter based on the determined quantity relating to operation temperature of the switching converter and the temperature of the semiconductor component, and limiting the switching frequency of the semiconductor component of the switching converter to the selected switching frequency.

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Espoo, Finland

Teemu Salmia