Abstract: A method is provided for controlling a multilevel converter to balance voltages of submodule energy stores. This balancing involves calculating predicted final voltages of energy stores at the end of a time interval to follow and selecting which submodule of a phase arm to insert or bypass during the time interval based on a comparison of the predicted final voltages of the energy stores. The predicted final voltages are updated in accordance with any selection made of which submodule to insert or bypass during the time interval. A control device and a computer program product are also disclosed. Voltage balancing according to a pre-programmed modulation scheme is possible by means of the disclosed method.

Abstract: The invention relates to a device and system for underground transport of ore, material and people, which includes electrical and mechanical drive systems, a plurality of hoisting devices, head ropes and balance ropes. The mass per meter of the balance ropes is significantly smaller than the mass per meter of the head ropes.

Abstract: An arrangement for a continuous casting process. The arrangement includes a vessel having a first opening for receiving molten metal in the vessel, a second opening for discharging the molten metal from the vessel, and a body extending between the first opening and the second opening, a first magnetic arrangement attached to the body, the first magnetic arrangement having a magnetic core with legs, and coils arranged around the legs, and a power system configured to provide an alternating current superimposed on a carrier current to each of the coils, each pair of alternating current and carrier current provided to a coil forming a flow control current, wherein flow control currents provided to adjacent coils are phase shifted relative each other, thereby creating a travelling magnetic field in molten metal in the vessel. A corresponding method is also presented herein.

Abstract: An interlocking mechanism for interlocking a first and a second low voltage switching devices, wherein each of the switching devices includes a movable contact part, a stationary contact part and, an actuating unit for operating the movable contact part in a direction and making connection or disconnection with the stationary contact part. The interlocking mechanism includes a first and a second housing connected to each other, a first and a second sliding bar. The first sliding bar is arranged on the first housing and connects to the actuating unit of the first switching device. The second sliding bar is arranged on the second housing and connects to the actuating unit of the second switching device. A sliding plane is defined and has a X- and Y-axis, the Y-axis being defined in the direction of motion of the actuating unit of the switching devices.

Abstract: The invention relates generally to field grading materials and, more particularly, to field grading materials including graphene oxide, reduced graphene oxide, or both, exhibiting non-linear resistivity. In one embodiment, the invention provides a composite material comprising: a polymer material; and reduced graphene oxide distributed within the polymer material.

Abstract: An auxiliary contact block for a low voltage contactor, wherein the contactor has a side wall including first and second recesses. The auxiliary contact block includes a first and a second housing, connected in parallel to each other, an actuation nipple extending out from the second housing, and a connecting mechanism for connecting the auxiliary contact block to the contactor. The connecting mechanism includes a snap-fit element for locking the auxiliary contact block to the contactor when it is at a latched position and being adapted to engage in the second recess provided on the side wall of the contactor, and a releasing member for unlocking the snap-fit element to an unlatched position and including a releasing bar arranged for receiving a pressing force. The releasing member is arranged on the second housing and further includes a wedge element connected to the pressing element.

Abstract: The present disclosure relates to a lock device, such as for safety functions, which includes a displaceable lock bolt, which can cooperate with a receiver in order to provide a locked position and unlocked position. The lock bolt includes a guide portion in a second lock bolt portion which, in response to a guiding device applying a force to the lock bolt, guides the lock bolt from the unlocked position to the locked position. The guiding device, in the locked position, is prevented from displacing the lock bolt to the unlocked position. The lock bolt is arranged to be displaced from the locked position to the unlocked position through influence of an external force applied to a first lock bolt portion.

Abstract: A monitoring system including a first and a second portion. The first portion includes a controller for receiving a code sequence. The first portion is configured to connect the system to a common data bus. The first portion is configured to provide a synchronization signal to the second portion when the two portions are in a predetermined position. The second portion includes a controller for providing the code sequence to the first portion and the first portion being further configured to output the code sequence for verification by a verification entity.

Abstract: A roll arrangement for determining a web tension profile of a web. The roll arrangement includes a roll having a peripheral surface for guiding the web, which peripheral surface is provided with a plurality of openings, and a plurality of sensor arrangements. Each of the plurality of openings are arranged to receive one sensor arrangement of the plurality of sensor arrangements to thereby sense forces applied by the web to the roll. The roll arrangement is adapted to suspend the sensor arrangements in the respective opening.

Abstract: An operator desk system including an operator desk, two display/monitor stands arranged on an operator desk in order to carry one display/monitor each, wherein each display stand includes individual motorized inclining means the inclining means being arranged to change the inclination of the corresponding display stand in a synchronized motion in relation to each other, independent of the location of the displays on the operator desk.

Abstract: A control system for controlling an industrial robot including a manipulator. The control system includes a plurality of modules adapted to handle various functions. A first of the modules is a drive module adapted to control the motors driving the movements of the manipulator. A second of the modules is a main computer module adapted to execute a program with instructions for the movements of the manipulator and to plan the movements of the manipulator based on the executed instructions. The control system is adapted to communicate with one or more external devices via an external network. The control system includes an internal network. Each of the modules is arranged as a node in the internal network and includes communication elements for communicating with the other nodes in the internal network. The internal network includes a first part adapted for normal communication and a second part adapted for time critical communication.

Abstract: A contactor has a frame including a base unit, a coil provided on the base unit and including input terminals, and a module including a circuit board for electrically controlling the coil, the circuit board including input terminals for power supply and output terminals for providing an electrical connection to the coil. The contactor further includes a fastening device arranged for mechanically and electrically connecting one of the output terminals to a corresponding input terminal of the coil, and the module is designed such that the fastening device connects the output terminal of the circuit board to the input terminal of the coil while at the same time the module is connected to the frame.

Abstract: An apparatus for crystallization of silicon includes a crucible for containing silicon, a heating and heat dissipating arrangement provided for melting the silicon contained in the crucible and for subsequently solidifying the molten silicon, and an electromagnetic stirring device provided for stirring the molten silicon in the crucible during the solidification of the molten silicon. A control arrangement is provided for controlling the heating and heat dissipating arrangement to solidify the molten silicon at a specified solidification rate and for controlling the electromagnetic stirring device to stir the molten silicon in response to the specified solidification rate of the molten silicon such that the ratio of a speed of the molten silicon and the specified solidification rate is above a first threshold value.

Abstract: An apparatus for crystallization of silicon includes a crucible for containing silicon, a heating and heat dissipating arrangement provided for melting the silicon contained in the crucible and for subsequently solidifying the molten silicon, and an electromagnetic stirring device provided for stirring the molten silicon in the crucible during the solidification of the molten silicon. A control arrangement is provided for controlling the heating and heat dissipating arrangement to solidify the molten silicon at a specified solidification rate and for controlling the electromagnetic stirring device to stir the molten silicon in response to the specified solidification rate of the molten silicon such that the ratio of a speed of the molten silicon and the specified solidification rate is above a first threshold value.

Abstract: A system of manipulators including several manipulators, namely robots and/or external axes, such as workstations or transport tracks, whereby each manipulator is controlled by a control system via communication means and is programmed to carry out a plurality of tasks. The system of manipulators is movable in a first coordinate system. A second coordinate system is defined for each manipulator, so that one part of the manipulator, e.g. its tool center point, stands still in the second coordinate system, which is movable relative to the first coordinate system.

Abstract: A cooling system for an electrical machine includes a substantially closed housing, a first heat exchanger arranged inside of the housing, a second heat exchanger arranged outside of the housing, a conduit assembly for transferring a heat exchange medium in a closed circuit between the first and the second heat exchangers, a first air circulating means configured to circulate air inside of the housing over the first heat exchanger, and a second air circulating means configured to circulate air outside of the housing over the second heat exchanger, wherein the conduit assembly includes a pump for actively circulating the heat exchange medium between the first and the second heat exchangers.

Abstract: A bearing assembly for an electrical motor, including a shaft, a housing, and a main bearing between the shaft and the housing, the shaft being surrounded by a rigid sleeve for functioning as an auxiliary bearing in case of a breakdown of the main bearing and as a grease sealing under normal operation.

Abstract: A mounting bracket for an electrical motor having two mounting interfaces at different distances from the bottom surface to be used in combination with two stator frames of different sizes. A method for obtaining equal shaft heights for electrical motors having stator frames of different sizes.