Abstract: A connecting apparatus for mounting on a vehicle or charging station, providing an electrical connection between the station and vehicle for charging an storage device of the vehicle, comprising: a contacting head for transferring electrical energy; at least one alignment device for coupling the contacting head to a receiver; a detector configured to determine a position of the receiver; and a control unit for aligning the contacting head and receiver; and wherein the alignment device includes a horizontal positioner; a pivoter for pivoting a contacting post carrying the contacting head from a parking position to a substantially vertical position; and a vertical positioner for telescoping the contacting post to adapt its length. The horizontal and vertical positioners, and pivoter performing an alignment movement independent from the others.

Abstract: A vacuum interrupter is disclosed with transition areas between metal housing parts and ceramic housing parts covered by insulating material. To enhance dielectric performance and field grading behavior, the insulating material can extend as a tube or a multilayer tube design over at least nearly a complete length of the vacuum interrupter or vacuum device arrangement. The insulating material can be filled or at least covered at an inner surface which comes into close contact with the vacuum interrupter or vacuum device surface, with metal and/or conductive metal oxides.

Abstract: A method and system for measuring an electrical quantity in an electrical network. The system is configured to obtain samples of the electrical quantity through measurements at different feeders or locations in the electrical network. The measurements are taken in turns and at different time instants, such that a value sequence is created on the basis of the measured samples.

Abstract: A multiphase medium voltage vacuum contactor is disclosed which can include a mounting frame on which there are positioned: for each phase, a current interrupter having a vacuum bulb which contains a fixed contact and a corresponding movable contact; and an actuator for moving the movable contacts between a closed position where they are coupled each to a corresponding fixed contact and an open position where they are each electrically separated from the corresponding fixed contact, and an electronic unit driving the actuator. An exemplary voltage transformer for feeding the electronic unit can be mounted on the frame. One or more sacrificial fault-protection devices and/or current sensors can be operatively associated to the voltage transformer and embedded into an electrically insulating coating encasing the transformer.

Abstract: A pressure transmitter and method for measuring pressure exerted by a fluid on the diaphragm of the pressure transmitter. A pressure sensor assembly can include a diaphragm displaceable under pressure exerted by the fluid, and first and second electronic circuits generating first and second oscillating signals, respectively, whose frequencies depend on the displacement of the diaphragm. First and second numerical values which are representative of the oscillating frequencies of the first and second oscillating signals, respectively. A signal indicates pressure exerted by the fluid on the diaphragm based on the first and second calculated numerical values.

Abstract: A protection device includes a diode having its forward direction in a normal power flow of a region of a DC collection system, a first switch in parallel with the diode, a second switch in series with the diode and a control unit for controlling the switches. The first switch can be opened so that current can flow through the diode in the forward direction without the first switch bypassing the diode, and closed if no current is flowing through the diode in the forward direction and power is needed upstream of the diode. The second switch can be closed so that current can flow through the diode in the forward direction to an AC grid interface of the DC collection system, and opened if no current is flowing through the diode in the forward direction due to a fault in a DC feeder to which the device is coupled.

Abstract: A circuit breaker including an ejection device with a compartment, in which an arc-extinction medium for improving circuit breaker operation is contained, and having an ejection orifice through which the arc-extinction medium is to be ejected, wherein the ejection orifice opens out into an injection zone of the circuit breaker in which the pressure is lower than in an arcing zone when an arc is present, and wherein the arc-extinction medium and/or exhaust-cooling medium is at least partially present in liquid form, when it is contained in the ejection device.

Abstract: A quenching chamber in medium-voltage switch disconnectors includes a body made of a gassing material that is of a solid shape similar to a rectangular prism. The chamber includes an arcing knife channel and an arc chamber hollowed in the body and is fitted with an arcing contact unit located in a socket. The arc chamber extends directly along the arcing knife channel from a back wall of the chamber and is connected with the inside of the arcing knife channel through a gap that forms a flat funnel. The height of the funnel decreases with an increase in the distance to the arcing knife channel. The width of the gap is less than the width of the arcing knife channel measured in a plane perpendicular to the side walls of the body.

Abstract: An on-load tap changer is provided and includes a plurality of modules disposed in an interior space of a tank and arranged in a side-by-side manner. Each module has a bypass switch assembly and a vacuum interrupter assembly mounted to a first side of a board. The bypass switch assembly is actuated by rotation of a bypass cam and the vacuum interrupter assembly is actuated by rotation of an interrupter cam. A transmission system rotates the bypass cam and the interrupter cam. The transmission system is mounted on a second side of the board.

Abstract: A method and system are provided for performing the computational execution of automation tasks with automation devices by combining one or more central processing units (CPU) and one or more Graphics Processing Units (GPU). The control tasks and/or control algorithms are executed by the single-core or multi-core control unit (CPU) and a multi-core-graphics processor (GPU) or both in parallel at the same time.

Abstract: An exemplary energy supply device for explosion-proof electronic functional units supplies each functional unit with a high-frequency AC voltage via an inductor. The inductors are formed as substantially congruent conductor tracks of a multi-level printed circuit board, which can be connected to one another and arranged vertically on a distribution printed circuit board. The number of metallization planes of the multi-level printed circuit board being greater than the number of metallization planes of the distribution printed circuit board.

Abstract: A method for protecting a synchronous machine (2) against damage caused by pole slipping in a power generating unit or a drive unit (1) in an electric power network is disclosed. The method measures signals of current and voltage of the synchronous machine (2) and assumed constant parameters to determine a disturbance (Trig_start). When a disturbance is detected, an indicator of pole slipping is determined, and the time of rotor operation with the occurrence of pole slipping is totalized. Next, if a threshold value allowed for the rotor operation with slipping proves to be valid, corresponding measures protecting the synchronous machine (2) against slipping are implemented. If the detection process is not fulfilled, the process of sudden disturbance and/or the process of accrued detection is conducted until the criterion of pole slipping occurrence is fulfilled for the generator mode or for the motor mode.

Abstract: A bus bar arrangement for electrical equipment has at least one bus bar and a shroud. The shroud provides a fault free interface for personnel working with the electrical equipment. First and second shrouds mounted on opposing ends of the at least one bus bar surround a substantial portion of the at least one bus bar. The shroud provides a connection surface for the connection of a wide variety of circuit breakers thereon. The shroud provides protection against intruding objects and ease of connection between circuit breaker contacts and bus bar assemblies of electrical equipment.

Abstract: A method is disclosed for operating a converter circuit, in which controllable power semiconductor switches of the rectifier unit of a converter circuit are controlled by a rectifier switch signal and the controllable power semiconductor switches of the inverter unit of the converter circuit are controlled by an inverter switch signal. In order to reduce losses in the no-load state of the converter circuit, the rectifier switch signal is blocked in order to disconnect the controllable power semiconductor switches of the rectifier unit if defined conditions of the converter circuit are fulfilled.

Abstract: An electrical DC generation system is disclosed. According to one aspect, a system for electrical DC generation system includes an electrical machine, having a positive output terminal and a negative output terminal, a plurality of stator windings, a plurality of passive rectifiers connected to the plurality of stator windings, the plurality of passive rectifiers being connected in series to form an intermediate bus having a positive terminal and a negative terminal. The system also includes a DC-DC converter circuit having input terminals connected to the positive and negative terminals of the intermediate bus and having output terminals electrically isolated from the input terminals and connected in series with the intermediate bus. The DC-DC converter output voltage is adjusted to regulate torque of the electrical machine by adjusting stator current of the electrical machine.

Abstract: A system and method for controlling a rectifier due to changing operating conditions including at least one reactor per phase connected to the rectifier for providing an input signal, a bias current for controlling the reactor, and a control current for controlling the reactor. The bias current is fixed to a predefined value which is taken as an input signal for providing a control current compensating the difference between the predefined value of the bias current and a start value defining a start point of the linear operating range of the reactor.

Abstract: A reverse-conducting power semiconductor device with a wafer has first and second main sides which are arranged opposite and parallel to each other. The device includes a plurality of diode cells and a plurality of gate commutated thyristors (GCT) cells. Each GCT cell includes layers of a first conductivity type (e.g., n-type) and a second conductivity type (e.g., p-type) between the first and second main sides. The device includes at least one mixed part in which diode anode layers of the diode cells alternate with first cathode layers of the GCT cells. In each diode cell, a diode buffer layer of the first conductivity type is arranged between the diode anode layer and a drift layer such that the diode buffer layer covers lateral sides of the diode anode layer from the first main side to a depth of approximately 90% of the thickness of the diode anode layer.

Abstract: Sensor structure (16) is provided for online monitoring of levels of Furans in oil of a transformer tank. The sensor structure includes a UV light source (26), a filter (30) permitting only UV light of a certain wavelength range to pass, a window (32) permitting the filtered UV light to passes there-through and a UV light detector (36) to receive UV light that passes through the window. When the sensor structure is mounted to the transformer tank that is online so that the window is exposed to oil, and Furans in the oil are being monitored, the Furans will absorb UV light, creating a difference in UV light received by the light detector when compared to the UV light received by the light detector when the monitored oil has no Furans therein. The output signal of the light detector is substantially proportional to a total of Furans in the monitored oil.