Abstract: The present invention provides a system and method for advising wireless computer networks on inter-network interferences during their life time. The method of the present invention initially observes initial channel utilization profiles along with corresponding time-slots of dynamic network elements and network characteristics of a first network and stores as historical channel utilization profiles. The initial transmission profiles an interfering second network are also recorded. The threshold transmission profiles are then recorded as historical transmission profiles. The aggregator determines interference patterns, by comparing historical channel utilization profiles with runtime threshold transmission profiles and advises and pre-warns appropriate network actions to a network manager of the first network on the interference prone zones. The system of the present invention includes a first network with a common multi-network interference observer, to advise on inter-network interferences.

Abstract: It is presented a converter arm for power conversion. The converter arm comprises: a plurality of converter cells, wherein each converter cell comprises a plurality of semiconductor switches, an energy storage element and at least three control signal connections arranged to control the conducting state of the plurality of semiconductor switches. Each converter cell is connected to receive a control signal from at least three entities via said control signal connections, wherein at least two of the three entities are neighboring converter cells, and each converter cell is arranged to forward a control signal to all connected neighboring converter cells via said control signal connections. A corresponding converter device is also presented.

Abstract: The present invention relates to a robot teach pendant unit (2) coupled to a programmable robot controller (1), the teach pendant comprising a graphical screen (6), and a native user interface program (9) which creates a graphical user interface and displays the user interface on the graphical screen.

Abstract: A protection arrangement for inaccessibly located power distribution equipment includes a first enclosure with power equipment and sensors, a second enclosure adjacent the first enclosure and including a signal handling device, at least one sealed electrical conductor passage between the first and second enclosures, each comprising at least one penetrator through the walls of the first and second enclosures. The signal handling device in the second enclosure is connected to the sensors in the first enclosure via electrical conductors passing through said sealed electrical conductor passages and to an external protection device via a communication link. The signal handling device receives electrical sensor signals from the sensors and shapes them for submission to the external protection device.

Abstract: A circuit breaking arrangement is disclosed, which is adapted to be coupled to a transmission line arranged to carry direct current for controllably effecting discontinuation of flow of direct current in the transmission line. The circuit breaking arrangement includes a current interrupter unit adapted to, when actuated, interrupt current in the transmission line and a first resonance circuit and at least a second resonance circuit. Each of the first and the at least a second resonance circuit is adapted to, upon actuation of the current interrupter unit and when the respective resonance circuit is activated, generate a resonance current superposing current of any arc generated in the current interrupter unit after actuation thereof.

Abstract: An arrangement for tapping power from a DC power line to an AC power line includes power transfer modules between two DC potentials, each including a first branch with a string of converter cells in parallel with a second branch including a capacitor and being connected to an AC phase. There is at least one control unit that controls the arrangement considering one or more of a) distributing appropriate AC and DC voltages in converter output voltages of all series connected modules, b) maintaining/setting cell capacitor voltages in specific range and allowing boost mode operation, c) performing possible balancing of the introduced capacitor and d) employing an alternate approach of using passive filters to mitigate low order harmonics.

Abstract: There is provided an electronics module. The electronics module includes a circuit board. The circuit board includes electronic equipment. The electronics module includes a housing. The housing encloses the circuit board. The electronics module includes a thermally conductive panel. The thermally conductive panel at least partly covers at least two opposite side surfaces of the housing. There is also provided an arrangement including at least two such electronics modules. There is also provided a method for providing such an electronics module.

Abstract: A short-circuiting arrangement for capacitors of a high voltage converter are provided, the capacitors each having two connection terminals, the arrangement including a short-circuiting wire configured to be moved along while in sliding contact with the connection terminals and including a short-circuiting section with electrically conductive material connected to a ground potential and a probing section with electrically conductive material and a voltage evaluating unit electrically connected to the short-circuit section and the probing section and configured to detect, as the probing section and short-circuiting section are connected to the respective connection terminals, the voltage across the capacitor, compare the voltage with a discharge threshold and halt or move the short-circuiting wire based on the detected voltage.

Abstract: A tool for extracting armour wires from a cable having an armouring layer includes a curved beak for grasping an armour wire, and an elongated body having a bottom surface provided with a protruding tip for separating two neighboring armour wires. The tip is protrudes away from the bottom surface and is elongated in a direction parallel to the bottom surface.

Abstract: An apparatus for enclosing a medium and/or high voltage unit connectable to an electric power system. The unit includes one or a plurality of electrical components and generates heat as a by-product during operation. The apparatus includes a housing including a main chamber housing a seat for holding the unit. The main chamber is arranged to house the unit. The housing includes at least one gas exit opening at an upper part of the housing and at least one gas entry opening. The housing includes a sound-absorptive gas exit chamber provided with the at least one gas exit opening. The housing includes a sound-absorptive gas entry chamber provided with the at least one gas entry opening. A first heat convection path is provided inside the housing between the at least one gas entry opening and the at least one gas exit opening, via the gas entry chamber, via the main chamber and via the gas exit chamber, in order to provide cooling.

Abstract: A circuit breaking arrangement is adapted to be connected to a current path in at least one transmission line arranged to carry an electrical current for controllably effecting discontinuation of flow of electrical current in the at least one transmission line. The circuit breaking arrangement includes a plurality of series connections of a plurality of power semiconductor switching elements. The plurality of series connections of power semiconductor switching elements are connected in parallel relatively to each other.

Abstract: A semiconductor assembly includes a stack with a semiconductor module and a cooler, wherein the semiconductor module is provided in contact with the cooler. A clamping assembly is adapted to exert a force on the two sides of the stack. The stack is provided with a through hole between the two sides thereof and a part of the clamping assembly including an electrically conductive part which extends through the through hole of the stack. Thereby, a compact mechanical arrangement is provided while obtaining improved electrical properties, such as lower inductance and more even current distribution.

Abstract: A method and computer program product for controlling data transfer between a client device and auxiliary robot cell functions of a robot cell as well as to an interface arrangement for the robot cell. The arrangement includes a reverse proxy providing connectivity for a client device to auxiliary robot cell functions accessible via a local addressing space, where the reverse proxy receives, in a first message having a destination address belonging to the interface device and being a first global address in a global addressing space, a request intended for an auxiliary robot cell function, converts the first address to a first local address of the auxiliary robot cell function in the local addressing space and sends the request to a web server associated with the auxiliary robot cell function using the first local address.

Abstract: Disclosed are an apparatus and a method for transmitting an analog signal, and an analog signal multiplexer. The apparatus comprises a photocoupler to receive an input analog signal and transform the input analog signal into an output analog signal, which varies with the input analog signal in a manner of non-linearity. The apparatus further comprises a non-linearity correcting unit to receive the output analog signal and correct the non-linearity to output a corrected output analog signal. An analog signal may be transmitted with a photocoupler.

Abstract: A power cable assembly device adapted to be arranged in the spaces between neighbouring power cores of a power cable. The power cable assembly device includes an extruded profiled body made of a polymer material having a first, second, and third walls. The first wall being convex and having an exterior surface adapted to face a jacket of the power cable. The profiled body also having a chamber wall extending from the second to the third wall, defining a slit and adapted to receive a fibre optic cable.

Abstract: A transmission cable includes a conductor or a bundle of conductors extending along a longitudinal axis, which is circumferentially covered by an insulation layer having an extruded insulation material, whereby the transmission cable passes the electrical type test as specified in Cigré TB496, whereby the rated voltage U0 is 450 kV or more. The type test includes subjecting the power cable to a DC voltage of 1.85*U0 during 10 to 15 cycles at negative polarity, followed by a polarity reversal with another 10 to 15 cycles at positive polarity at a DC voltage of 1.85*U0, followed by additional 2 to 5 cycles during at least 4 to 10 days at positive polarity, and wherein U0 is 450 kV, or 525 kV, or more.

Abstract: Embodiments disclose using a pairing or pairings of terminals in a DC power system including a plurality of terminals to implement power oscillation damping (POD), where the DC power system is connectable to at least one AC power system. The active and/or reactive power of the terminals in the pairing may be controlled or modulated in a similar manner such that no power imbalance in the DC power system is created. For example, POD may be implemented by means of active and/or reactive power modulation by pairing two terminals in the DC power system) such that their active and/or reactive powers are controlled or modulated in the same or substantially the same manner or identically but with the opposite sign.