Abstract: A method for determining capacitance values of capacitances of a photovoltaic system including a multiphase inverter which includes an output current filter on an alternating current side thereof and is connected to a multiphase energy supply network via a switching element and is associated with at least one intermediate circuit capacitance on the direct current side thereof is provided.

Abstract: A lubricant reservoir system includes a lubricant reservoir having an interior wall and an inlet for receiving lubricant from a supply. A follower device in the reservoir contacts the interior wall of the reservoir in a sliding and sealing manner, and the follower device is movable up and down in the reservoir from a first position to a second position in response to a changing lubricant level. A valve is in fluid communication with the inlet and is configured to selectively prevent a flow of the lubricant through the inlet. A connector operatively connects the follower device to the valve unit such that the flow of the lubricant through the inlet is prevented when the follower device is in the second position. The connector is configured such that the valve is positionable independently of the reservoir.

Abstract: A device for detecting a movement of a piston of a lubricant distributor includes a movable actuator including a first magnet element, and a movable indicator including a second magnet element. The actuator is configured to be moved from an initial actuator position to an end actuator position by a movement of the piston, and the actuator and the indicator are configured and disposed such that a repulsive magnetic force prevails between them such that the indicator is moved from an initial indicator position to an end indicator position by the movement of the actuator from the initial actuator position toward the end actuator position.

Abstract: A method is provided for producing an induction coil, in particular for a charging device for the cableless charging of an electrical energy storage device of an electrically driven motor vehicle. At least one coil wire is placed on a carrier fabric in a conductor loop-type coil pattern. The coil wire is stitched to the carrier fabric via at least one stitching wire.

Abstract: A device for detecting a movement of a piston of a lubricant distributor includes a movable actuator including a first magnet element, and a movable indicator including a second magnet element. The actuator is configured to be moved from an initial actuator position to an end actuator position by a movement of the piston, and the actuator and the indicator are configured and disposed such that a magnetic force prevails between them such that the indicator is moved from an initial indicator position to an end indicator position by the movement of the actuator from the initial actuator position toward the end actuator position.

Abstract: A coil unit for inductive transfer of energy has an induction coil and a ferrite core which cooperates with the induction coil. The ferrite core is produced from a fiber reinforced ceramic material. A motor vehicle is equipped with such a coil unit.

Abstract: An illumination device includes a fiber composite material component, at least one light source, and at least one light-guiding body. The fiber composite material component is composed of a plastic matrix and a plurality of reinforcing fibers that are embedded in the plastic matrix. The light-guiding body has at least one light-inlet surface for coupling in light that is emitted from the light source, and at least one light-outlet surface for coupling light out. The light-guiding body is embedded in the plastic matrix of the fiber composite material component. The fiber composite material component is at least partially translucent to light coupled out of the light-outlet surface.

Abstract: A method for inkjet printing an image onto a curved region of an object surface includes applying a screen of ink drops to the region to create print dots, calculating the screen using a computer and generating and applying ink drops to the region using a print head having nozzles on a nozzle surface. The steps include a) providing data representing the print image, b) providing or calculating data representing the region, c) providing or calculating path data on paths for the print head or object, d) calculating application locations of ink drops using data from steps b) and c), e) calculating data based on tiling the region using data from step d), f) calibrating tone values using data from step e), g) screening the print image using data from step f), and h) printing the screened image onto the region. A device implementing the method is also provided.

Abstract: A heat recovery system has an evaporator in which a working medium is evaporated, an expander by means of which energy from the working medium in vapor form is made usable, a recuperator operating as an internal heat exchanger, a condenser that condenses the working medium in vapor form, and a pump to move the working medium through a circuit. At least one plate heat exchanger with flow channels formed in interspaces between the heat exchanger plates is provided as a component of the system and includes at least the recuperator and the condenser.

Abstract: The invention relates to a roller test bench-type charging device comprising driveable rollers for charging an electric energy store in a motor vehicle, in particular in an electric or hybrid vehicle, such that the energy store of a motor vehicle which is placed on said device and the wheels of an axle of which are connected to the rollers in a force-transmitting manner is charged via the motor vehicle alternator or a motor vehicle electric motor designed as a generator. A universal charging device can thereby be provided.

Abstract: A method for inkjet printing an image onto a curved region of an object surface includes applying a screen of ink drops to the region to create print dots, calculating the screen using a computer and generating and applying ink drops to the region using a print head having nozzles on a nozzle surface. The steps include a) providing data representing the print image, b) providing or calculating data representing the region, c) providing or calculating path data on paths for the print head or object, d) calculating application locations of ink drops using data from steps b) and c), e) calculating data based on tiling the region using data from step d), f) calibrating tone values using data from step e), g) screening the print image using data from step f), and h) printing the screened image onto the region. A device implementing the method is also provided.

Abstract: A connecting device is provided, including a control apparatus, an energy storage apparatus, an input connection, and an output connection, the input connection being connected to the energy storage apparatus by means of a charging apparatus, the charging apparatus being configured for controlled charging of the energy storage apparatus, the control apparatus being configured, after reaching a preset charge state of the energy storage apparatus, to connect the energy storage apparatus to the input connection; and the control apparatus also being configured, during and/or following connection of the energy storage apparatus to the input connection, to connect the input connection to the output connection.

Abstract: In operating an inverter including input connectors, (i) to which strings of photovoltaic cells are connected, (ii) each of which is connected via a DC/DC converter to a common DC voltage link, and (iii) which are bridgeable, the partial powers flowing through the individual DC/DC converters are determined, and for some time at least two DC/DC converters are either operated with the aim of balancing the partial currents flowing through them or connected through. During this operation or connecting through, the partial powers flowing through the at least two DC/DC converters are compared with each other, and if a difference between the partial powers exceeds a threshold value, the DC/DC converters are subsequently operated in a way adjusted to the fact that they connect different strings to the DC voltage link.

Abstract: The disclosure relates to a method for operating an inverter that includes at least one bridge assembly that is actuated in a modulated manner for supplying electrical power to an energy supply network. Initially, the inverter is operated by the unipolar actuation of the at least one bridge assembly and the energy supply network is monitored for the presence of a network fault. If a network fault is detected, the inverter is operated at least at intervals by the bipolar actuation of the at least one bridge assembly. The disclosure further relates to a network fault-tolerant inverter which is equipped for carrying out the method.

Abstract: A method and apparatus for executing an application program stored in an one-time-programmable, OTP, memory in a system on chip (SoC) is described. The SoC has RAM, a CPU and an OTP controller. The OTP memory stores an application program. The method includes, by the processor unit at power-up, instructing the OTP controller to copy the application program from the OTP memory to RAM, executing the application program from RAM, and setting the system on chip (SoC) in sleep mode. By the OTP controller after a wake-up, copying the application program from the OTP memory to the RAM and after the copying, waking up the CPU and transferring control back to the CPU. By the CPU after being woken up by the OTP controller, executing the application program from RAM.

Abstract: The invention relates to a method and a device for producing three-dimensional molded parts from a continuous sheet of a flat, plastically malleable fiber material via deep drawing with a stamp and an associated die, wherein the fiber material between the stamp and the die can be reshaped via a relative movement. The object of the instant invention is to offer a method and a device for producing three-dimensional molded parts in which the reshaping is done via deep drawing from a cut-to-size section in the continuous sheet and which leads to a high reshaping ratio. The problem is solved by connecting the round, rectangular, oval or irregular cut-to-size section for the molded part during the deep-drawing process to the continuous sheet of fiber material via at least one web and otherwise separating it from the continuous sheet via at least one stress-easing cut; a reshaping ratio, as the ratio of the diameter and the depth, of greater than 0.2 can be realized.

Abstract: A method for the operational control of an inverter designed for DC/AC voltage conversion that has at least one direct-voltage input and that can be connected to a power supply grid via at least one alternating-voltage output, the inverter being involved in a power flow interaction with the grid in such a manner that, during operation of the inverter, a leakage current IA can occur, wherein the leakage current IA is controlled in the operational control.

Abstract: The disclosure relates to a tracking method for a voltage transformer, in particular an inverter, of a photovoltaic system. In the method, an intermediate circuit voltage is repeatedly decreased or increased in one direction to a lower or higher voltage by voltage steps of a specified magnitude. The method is characterized in that an average rate of change of the intermediate circuit voltage in a partial time period between two voltage steps is limited by a maximum average rate of change, the maximum average rate of change being defined according to the magnitude of the intermediate circuit voltage. The disclosure further relates to a tracking device designed to perform the tracking method and to an inverter equipped with the tracking device.

Abstract: The invention relates to a process of connecting an AC output of a transformerless inverter of a solar power plant to an internal AC power grid at an input side of a galvanic isolation, while an offset voltage for shifting a potential center point of a photovoltaic generator connected to the inverter is applied. The process includes: (i) synchronizing the inverter with the power grid; (ii) essentially matching a potential center point of the current-carrying lines of the AC output and a potential center point of the power grid, while only one of the potential center points of the current-carrying lines and the power grid is yet shifted by the offset voltage; and (iii) galvanically connecting all current-carrying lines of the AC output with the power grid only after the steps of synchronizing and essentially matching.

Abstract: A method for converting DC power from a source into AC power by means of an inverter which includes three bridge branches, each having a phase output, is described. During grid-connected operation, the bridge branches are actuated in such a way that the AC power is fed, as three-phase grid-compliant power, into a grid. During emergency operation of the inverter, the AC power is provided as single-phase island grid by two of the three bridge branches at the phase outputs thereof, wherein the inverter is disconnected from the grid.