Abstract: An electric power converter device includes a first power semiconductor module and a frame for a closed cooler. The first power semiconductor module includes a first base plate having a first main side, a second main side opposite the first main side and a lateral side surface extending along a circumferential edge of the first base plate and connecting the first and the second main side. The frame is attached to the second main side of the first base plate. The first base plate has a first step on the second main side along the circumferential edge of the first base plate to form a first recess along the circumferential edge of the first base plate, in which first recess a first portion of the frame is received.

Abstract: A power converter including a semiconductor module having a base plate and a cooling housing. The cooling housing includes a receptacle plate and a cover. The receptacle plate has an opening. The receptacle plate is connected to the base plate of the semiconductor module around the opening. The cover is connected to the receptacle plate along a closure path around the opening, and either the receptacle plate or the cover is formed as a stamped or deep-drawn plate.

Abstract: A circuit breaker having at least one capacitor assembly connected in parallel across a contact of the circuit breaker. The capacitor assembly can be housed with the contact within a sealed enclosure of the circuit breaker. The enclosure can be configured to house an insulating medium that is configured to reduce or quench an arc(s) that may form at least when the contact of the circuit breaker is displaced from a closed position to an open position. The capacitor assembly, which includes a transient recovery voltage (TRV) capacitor, can be configured to delay terminal fault and short line fault TRV and the rate of rise of the initial TRV (ITRV) that can appear across the open contact of the circuit breaker.

Abstract: An electrical bushing is specified, the bushing including a flange with a lower part and an upper part affixed to one another and further including a core surrounded by the flange, wherein the flange is affixed to the core by a locking compound disposed in a volume of a joint between the flange and the core, and wherein the volume of the joint further includes a compressible material, the compressible material being configured to compress or expand in response to a change in the volume of the joint. Furthermore, a method of producing an electrical bushing is specified.

Abstract: A static electrical device assembly including: a static electrical device; a heat exchanger system including a first heat exchanger adapted for cooling of the static electrical device by transferring heat into ambient air, and a second heat exchanger adapted for recovering heat from the static electrical device; a flow passage adapted to provide a route for air flow between outdoor air and the first heat exchanger; a sensor system adapted to provide temperature information relating to the static electrical device; and a control system (CTRL) adapted to control the heat exchanger system based on information provided by the sensor system. The heat exchanger system further includes a shutter arrangement adapted to adjust a surface area of the flow passage, the control system (CTRL) is adapted to control the shutter arrangement between an open state and an enclosed state.

Abstract: An insulator for a gas-insulated device is provided, including an injection-molded insulator disc and a conductor, wherein the insulator disc includes a first circumferential surface, a second circumferential surface disposed radially outwards from the first circumferential surface, and a web portion connecting the first circumferential surface and the second circumferential surface, characterized in that the web portion includes a wave structure, the web portion having an inner wave profile at the first circumferential surface and an outer wave profile at the second circumferential surface, and the inner wave profile and the outer wave profile have a radius of curvature of 2 mm or more and 10,000 mm or less.

Abstract: An interrupter device provides overload protection. The device includes a first terminal that is configured to establish an electrical connection to a first terminal of a high voltage surge arrester, a second terminal that is configured to establish an electrical connection to an electrical power grid line side conductor, and a chargeless disconnection trigger that causes an interruption in an electrically conductive path between the first and second terminal in response to an overload condition at the second terminal.

Abstract: Provided is a spring drive cam for a spring drive of a circuit breaker including a disc-like shape configured for rotating around a rotation axis in the spring drive, whereby the disc-like shape comprises a radius (R) that changes depending on an angle (?) of the radius (R) relative to a base angle (?0), and whereby a rate (dR/d?) defined by a change of the radius (R) per change of the angle (?) is ?0.3 mm/°.

Abstract: A converter including a semiconductor module and a cooling housing. The semiconductor module includes a semiconductor chip, a substrate having a first side and a second side, a base plate having a first side and a second side, and a molding compound. The semiconductor chip connects to the first side of the substrate. The second side of the substrate connects to the first side of the base plate, the second side of the base plate has a first region and a second region. The first region has a surface expansion, and the first region having the surface expansion contacts with a coolant liquid in an operating state. The second region forms a closed path around the first region, the cooling housing has a plate including at least one hole, and the plate is connected around the hole to the second region of the base plate by welding.

Abstract: A high voltage system including: a high voltage bushing having a bushing body configured to be assembled with a tank filled with a dielectric liquid wherein the bushing body has a cavity, and the bushing includes a dielectric liquid level sensor configured to measure a dielectric liquid level in the cavity, and a temperature distribution determining device configured to determine a heat distribution in the bushing based on the dielectric liquid level measured by the dielectric liquid level sensor.

Abstract: The invention is concerned with an inhibitor module arrangement, a shielding arrangement comprising an inhibitor module and a converter station comprising a converter and a shielding arrangement. The inhibitor module arrangement comprises a first string, a second string, and at least one first inhibitor module (30), where the first string comprises resistors (R1), the second string comprises capacitors (C1, C2, C3), the first string is physically separated from and electrically connected in parallel with the second string and the at least one first inhibitor module (30) comprises a first electrical connection terminal (32) at a first end for connection to a piece of high voltage equipment, a second electric connection terminal (34) at a second end for connection to a first shield element for this piece and a closed interior comprising at least one of the strings electrically connected between the first and the second electrical connection terminals (32, 34).

Abstract: A transformer tank for a shell form transformer, for housing an active part of a three-phase transformer including transformer phases is provided. The tank includes a bottom tank part and a medium tank part comprising bottom plate and walls, a cover plate, reinforcing beams joined to the walls, interphase plates and stiffening supports for strengthening the cover plate. The interphase plates are to be arranged in a lower space of the tank, between adjacent transformer phases, extending from one wall to an opposite wall of the tank and coupled to the reinforcing beams. Each stiffening support is to be coupled to an interphase plate and extends in an upper space of the tank between the interphase plate and the cover plate, to cooperate with the cover plate. A three-phase shell form transformer and a method to assemble the transformer are also provided.

Abstract: The subsea fuse assembly includes an enclosure filled with a dielectric fluid and provided with an equalization opening, which is sealed with a flexible element. A first electric conductor extends into the enclosure through a first lead-through positioned in a wall of the enclosure. A second electric conductor is attached to an inner surface of a wall of the enclosure. A fuse is connected between the first electric conductor and the second electric conductor within the enclosure. A third electric conductor extends outside the enclosure and is attached to an outer surface of a wall of the enclosure. An electrically conductive path is thus provided between the second electric conductor and the third electric conductor through the electrically conductive enclosure.

Abstract: An enclosure for a circuit breaker that includes a particle trap that is integrated into at least one foot of the enclosure. The enclosure can be configured to house a circuit interrupter and seal a dielectric insulating medium within an interior region of the enclosure. The particle trap can include an opening that extends through at least an inner side of a wall of the enclosure and into an adjacent foot such that the opening is in fluid communication with the interior region of the enclosure. Additionally, the opening of the particle trap can radially extend within both the wall of the enclosure and the foot between a first side and a second side of the particle trap.

Abstract: A method for p-type doping of a silicon carbide layer includes first implantation step of implanting aluminum dopants into a preselected region of the silicon carbide layer by ion implantation, an annealing step of annealing the silicon carbide layer after performing the first implantation step, a second implantation step of implanting beryllium dopants into the preselected region by ion implantation before the annealing step. A ratio of the total aluminum dose in the first implantation step to the total beryllium dose in the second implantation step is in a range between 0.1 and 10.

Abstract: A transformer includes a transformer core having a first core leg having a first longitudinal axis and second core leg having a second longitudinal axis; a first low voltage (LV) winding arranged around the first core leg, a first high voltage (HV) winding arranged around the first LV winding; a second low voltage (LV) winding arranged around the second core leg; and a second high voltage winding arranged around the second LV winding, wherein the first HV winding is provided with a first HV connector and a second HV connector each extending substantially perpendicular away from the first longitudinal axis, and wherein the second HV winding is provided with a third HV connector and a fourth HV connector each extending substantially perpendicular away from the second longitudinal axis.

Abstract: An electrical component includes a ferromagnetic core with a first and a second leg; a primary winding with a first primary winding portion arranged around the first leg of the ferromagnetic core and a second primary winding portion arranged around the second leg of the ferromagnetic core; wherein the first primary winding portion and the second primary winding portion each include parallel connectable conductors arranged around the ferromagnetic core in a cross section with the conductors being radially displaced with respect to each other at radial row positions, wherein the number of conductors of the first primary winding portion is equal the number of conductors of the second primary winding portion.

Abstract: The present disclosure provides a gas-insulated high or medium voltage circuit breaker including a first arcing contact and a second arcing contact, wherein at least one of the two arcing contacts is axially movable along a switching axis, wherein during a breaking operation, an arc between the first arcing contact and the second arcing contact is formed in an arcing region; a nozzle including a channel directed to the arcing region, for blowing an arc-extinguishing gas to the arcing region during the breaking operation; a diffuser portion adjacent to the nozzle, for transporting the gas from the arcing region to a region downstream of the diffuser portion; a buffer volume directly downstream of the diffuser portion; and an enclosure confined within a housing of the circuit breaker.

Abstract: An insulated gate power semiconductor device (1a), comprises in an order from a first main side (20) towards a second main side (27) opposite to the first main side (20) a first conductivity type source layer (3), a second conductivity type base layer (4), a first conductivity type enhancement layer (6) and a first conductivity type drift layer (5). The insulated gate power semiconductor device (1a) further comprises two neighbouring trench gate electrodes (7) to form a vertical MOS cell sandwiched between the two neighbouring trench gate electrodes (7). At least a portion of a second conductivity type protection layer (8a) is arranged in an area between the two neighbouring trench gate electrodes (7), wherein the protection layer (8a) is separated from the gate insulating layer (72) by a first conductivity type channel layer (60a; 60b) extending along the gate insulating layer (72).

Abstract: A semi-manufactured power semiconductor module includes a substrate for bonding at least one power semiconductor chip; a first leadframe bonded to the substrate and providing power terminals; and a second leadframe bonded to the substrate and providing auxiliary terminals; wherein the first leadframe and/or the second leadframe include an interlocking element adapted for aligning the first leadframe and the second leadframe with respect to each other and/or with respect to a mold for molding an encapsulation around the substrate, the first leadframe and the second leadframe.