Abstract: Circuit assembly (1, 1a), uninterrupted power supply unit (1a) with converter part (2) and converter unit (20), central control unit (21) and input for current to be converted and output for converted current and circuit part (3, 4) connected upstream of input of converter part or connected downstream of output of converter part, external control unit (12) connectable to circuit assembly and central control unit (21) configured to receive control instructions from external control unit (12). Circuit assembly can be disconnected from the power supply network rapidly and without repercussions on the network. Every circuit part (3, 4) comprises a decentralized control unit (31, 41), connected to central control unit (21) via communication bus (13), receiving control instructions from central control unit (21). External control unit (12) is connected to communication bus (13) and decentralized control unit (31, 41) is configured to receive control instructions from external control unit (12).

Abstract: The invention relates to an arrangement for an uninterruptible power supply with a rectifier, an energy store, an inverter, a switching means and a controller. The rectifier is connected to a rectifier input to a supply grid (AC1). The energy store is connected to a rectifier output of the rectifier (1) and to an inverter input of the inverter. A network (AC3) to be protected or a load to be protected is connected to an inverter output of the inverter, wherein the rectifier input or a supply grid (AC2) is connected via the switching means to the inverter output, and wherein the rectifier, the inverter and the switching means is controlled by the controller, wherein the controller has two control parts which are constructed with redundancy, and wherein the rectifier and the switching means or the inverter and the switching means can be controlled simultaneously by the control parts.

Abstract: A resonant circuit inverter with a rectifier, a DC link circuit and an inverter including controllable switches. The resonant circuit inverter has a first control means, with which the operating point (Ap) of the resonant circuit inverter determined by a phase angle between an output current (Iist) and a voltage (Uist) at the output of the resonant circuit inverter is controlled. The first control means determines frequency of the output current (Iist). The resonant circuit inverter has a phase detector for determining an actual phase angle as a function of a zero crossing of the output current (Iist). The resonant circuit inverter has means for detecting a zero crossing of the output current (Iist). For determining the actual phase angle, the difference (Ti?Tt) is determined from measured time (Ti) and a known dead time (Tt).

Abstract: The invention relates to a power electronic assembly (1, 2, 3) with a heat sink (2), a power semiconductor module (1) and a circuit arrangement (3) for controlling the power semiconductor module, wherein the heat sink (2) has at least two parallel channels through which a coolant can flow.

Abstract: This invention relates to a device (13) for the distribution of firing pulses, a circuit arrangement (10) for sequence control of power regulators (20) with this device (13) for the distribution of firing pulses and a process for the sequence control of power regulators (20) for operation with this circuit arrangement (10). A circuit arrangement of the above type and components for such a circuit arrangement and a process for operation of the circuit arrangement is provided, enabling better usage of the components, in particular of the device (12) for the generation of firing pulses. This is made possible through the invented device (13) for the distribution of firing pulses or an invented circuit arrangement (10) with this device (13).

Abstract: A power supply arrangement for producing polysilicon with a central control unit and a basic supply unit, which are regulated and controlled by control means. The basic supply unit supplies the supply module with electric energy, an output for connecting to loads which are supplied with electric energy from the mains via basic supply unit, and controllable switches, which are connected to the input and to the output and which are configured for adjusting the energy to be supplied to the loads. The switches are controllable. The control unit is supplied with electric energy. The power supply includes a communication bus. The control module and the basic supply module are connectable to the control module and the basic supply module to the communication bus. The control module and the basic supply module provide connections to the control module and the basic supply module to the communication bus.

Abstract: A power supply arrangement for supplying a square-wave current (I2) to a load connected to an output of the power supply arrangement, in particular a power supply arrangement in an arc furnace for generating an arc, including a transformer (TU) with at least two primary-site taps (1U1, 1U2) which form an input of the power supply arrangement, and with several secondary-side taps (2U1, 2U2, 2U3, 2UN), a bridge circuit (BU) with several first half bridges (11, 12, 13) which include converter valves (V11, V12, V13, V14, V15, V16) and which each have a first terminal (A11, A12, A13) of the bridge circuit, with a bridge section with a choke (L1), and with a second half bridge (20) which has converter valves (V17, V18) and a second terminal (A20) of the bridge circuit (BU), wherein each first terminal (A11, A12, A13) is connected to one of the secondary-side taps (2U1, 2U2, 2U3) of the transformer (TU), wherein the second terminal (A20) is connected to the output.

Abstract: A power supply arrangement (MF) for a reactor (R) for producing polysilicon, with a frequency converter, with at least one input for receiving an input current from the supply grid with which the input is connected, and outputs for connecting one or several loads (3), via which the load(s) (3) can be supplied with an output current, wherein the power supply arrangement has a transformerless conversion circuit for converting the input current into an n-phase multiphase AC current, wherein the phase shift between chained voltages of an n-phase AC current system formed on the secondary side of the conversion circuit is 360°/n, wherein n is a natural number greater than or equal to two, wherein the supply arrangement (MF) has n outputs, wherein the outputs from a chain, and wherein one of the chained voltages of the n-phase AC current system is applied at each output.

Abstract: A power supply arrangement (MF) with an inverter (12) for generating N-phase AC current and at least one N-phase AC current transformer (2) having primary windings (211, 212, 213) and secondary windings (221, 222, 223), wherein the primary windings (211, 212, 213) are connected in a polygon and a sum vector of the voltages present at the N secondary windings (221, 222, 223) becomes zero when the transformer is idling, wherein each vertex of the polygon formed by the primary windings (211, 212, 213) is connected via a corresponding capacitor (C11, C12, C13) with a corresponding phase conductor terminal of the inverter (12).

Abstract: On a printed circuit or substrate board (10) designed to receive electronic components and having conductive tracks (12) printed on said board, one or more conductive bars (18) are provided that are mounted one after another between conductive link surfaces (140, 142, 144), the conductive bars (18) being electrically interconnected during a subsequent soldering process that is either a wave soldering process or a soldering process in a reflow oven.

Abstract: The invention relates to an arrangement (10) for ground fault monitoring of an AC circuit between, on one hand, a neutral conductor (N?) of the AC circuit and, on the other hand, a protective ground wire (PE) or a ground wire with a series connection of ohmic resistors (R1, R2, R3), which has a first terminal (101) for the neutral conductor (N?) and a second terminal (102) for the protective ground wire (PE) or ground wire, wherein the arrangement includes at least one means for detecting a break of one of the resistors (R1, R2, R3) of the series connection.

Abstract: A current supply arrangement for, e.g., producing polysilicon, with a first current supply device and a second power supply device, including two AC current regulators and a voltage sequence controller for controlling the AC current regulators, with a terminal group having two terminals for connecting a load. A terminals is connected directly, i.e., without an interconnected switch, with an output terminal of the second current supply device, and with a first switching group associated with the terminal group, with switches for connecting and disconnecting the terminals of the terminal group with or from output terminals of the first current supply device. The current supply arrangement also includes an additional current supply device having two AC current regulators and a voltage sequence controller for controlling the AC current regulators, additional terminal groups comprising two terminals for connecting one load.

Abstract: A circuit (S) for protecting a DC network having DC loads (1) and connectable to the circuit (S), the circuit (S) is suitable and configured to supply the DC network with electric power via a three-phase rectifier (G) and wherein the circuit (S) includes a means (2, 3, 4, TH1, LS, CS, DU, DV, DW) for detecting an overvoltage, wherein the means is suitable and configured to detect an overvoltage at the input of the DC network, and the circuit (S) includes a means (2, 3, 4, TH1, LS, CS, DU, DV, DW) for transferring a current, wherein the means is suitable and configured to supply current to one or several current-carrying thyristors (THU1, THV1, THW1) of the rectifier (G), wherein the current causes the thyristor or thyristors (THU1, THV1, THW1) to turn off as soon as the detection means has detected an overvoltage.

Abstract: The present invention relates to a device for supplying current to at least one silicon rod (3) during precipitation of silicon with the Siemens process, wherein the device has at least one input (E) suitable and configured for connecting the device to an electric power grid (N) for supplying electric energy, at least one output (A) to which the at least one silicon rod (3) can be connected, at least one AC current regulator (1) which is suitable and configured to supply the at least one silicon rod (3) connected to the at least one output (A) with electric current from the electric power grid (N), wherein the device further includes at least one frequency converter (2) which is suitable and configured to supply the at least one silicon rod (3) connected to the at least one output (A) with electric current from the electric power grid (N), wherein the electric current has a higher frequency than the current provided by the AC current regulator (1).

Abstract: A high-power high-frequency cable (1) is provided with a strand (2, 3, 2?, 3?, 2?, 3?, 2??, 3??) made of electrically conducting individual wires (22) and a jacket (21) implemented as a conductor and surrounding the individual wires (22), wherein each individual wire (22) has an insulating varnish layer, wherein the high-power high-frequency cable (1) has at least one strand pair (2, 3, 2?, 3?, 2?, 3?, 2??, 3??) of which one strand (2, 3, 2?, 3?, 2?, 3?, 2??, 3??) can be used as a feed conductor and one strand as a return conductor, and wherein the feed conductor and the return conductor of the strand pair (2, 3, 2?, 3?, 2?, 3?, 2??, 3??) are bundled so as to run parallel to each other.

Abstract: The invention relates to an arrangement (10) for ground fault monitoring of an AC circuit between, on one hand, a neutral conductor (N?) of the AC circuit and, on the other hand, a protective ground wire (PE) or a ground wire with a series connection of ohmic resistors (R1, R2, R3), which has a first terminal (101) for the neutral conductor (N?) and a second terminal (102) for the protective ground wire (PE) or ground wire, wherein the arrangement includes at least one means for detecting a break of one of the resistors (R1, R2, R3) of the series connection.

Abstract: The invention relates to a current supply arrangement for, e.g., producing polysilicon with the Siemens process, with a first current supply device and a second power supply device, including two AC current regulators and a voltage sequence controller for controlling the AC current regulators, with a terminal group having two terminals for connecting a load. A terminals is connected directly, i.e., without an interconnected switch, with an output terminal of the second current supply device, and with a first switching means group associated with the terminal group, with switching means for connecting and disconnecting the terminals of the terminal group with or from output terminals of the first current supply device. The current supply arrangement also includes an additional current supply device having two AC current regulators and a voltage sequence controller for controlling the AC current regulators, additional terminal groups comprising two terminals for connecting one load.

Abstract: Disclosed is a circuit arrangement for supplying variable loads (I1, I2, M1, M2, O1, O2, O3) from three phases (L1, L2, L3), with a circuit arrangement having four groups of terminals (A11, A12, A13, A14; A21, A22, A23, A24; A31, A32; A41, A42, A43) for the loads (I1, I2, M1, M2, O1, O2, O3) which are subsequently designated as terminal groups; the circuit arrangement is suitable and set up for supplying the terminals (A21, A22, A23, A24) of the second terminal group from the first phase (L1); the circuit arrangement is suitable and set up for supplying the terminals (A41, A42, A43) of the fourth terminal group from a second phase (L2); the circuit arrangement is suitable and set up for supplying the terminals (A11, A12, A13) of the first terminal group and the third terminal group (A31, A32) from a third phase (L3); the circuit arrangement is suitable and set up for controlling the voltage of the four terminal groups, and exhibits three control loops for this purpose.