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: 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: 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 invention relates to a power supply arrangement with a first transformer (T1), with at least two secondary-side taps for a secondary-side phase conductor potential and with a tap for a secondary-side neutral conductor potential, wherein in standard operation of the first transformer a rated voltage drops between a first of the taps for the secondary-side phase conductor potential and the tap for the secondary-side neutral conductor potential, and with two power controllers (V1, V2) connecting the taps for the secondary-side phase conductor potential with a phase conductor terminal of an output of the power supply arrangement, wherein the circuit arrangement has on the secondary side of the first transformer (T1) a means (T2) for increasing the voltage above the rated voltage.

Abstract: The invention relates to 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 form a chain, and wherein one of the chained voltages of the n-phase AC current system is applied at each output.

Abstract: The invention relates to a circuit arrangement for igniting four thin silicon rods in a reactor for producing from the thin silicon rods silicon rods according to the Siemens process and for starting up such reactor. Also described is a method for igniting the thin silicon rods and for starting up, i.e., commencing operation of the reactor.

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: 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) connectible 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: An uninterruptible power supply with a rectifier, energy store for storing electrical energy, inverter, switching means and a controller is provided. The rectifier is connected to a rectifier input to a supply grid (AC1), wherein the energy store is connected to a rectifier output and to an inverter input of the inverter. A network (AC3) or load to be protected is connected to an inverter output of the inverter. The rectifier input or a supply grid (AC2) is connected via the switching means to the inverter output. The rectifier, the inverter and the switching means are controlled by the controller. The arrangement includes means for supplying auxiliary current. Each means for supplying auxiliary current is connected with an input for the supplying auxiliary current to the first control part and an input for supplying auxiliary current to the second control part, for supplying the control parts with electric energy.

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: 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: 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: The invention relates to a power supply arrangement, in particular for supplying power to thin silicon rods in a reactor for producing polysilicon with the Siemens process, with inputs (L1, L2, L3) for connection to a three-phase power grid, with outputs, grouped in three groups (A11-A13, A21-A24, A31-A33) of outputs for supplying power to loads connected to the outputs, in particular the thin silicon rods, with three groups (S1, S2, S3) of adjusting means for adjusting an electric voltage present at the outputs, and with three groups (U1, U2, U3) of switchover means for switching between a parallel connection and a series connection of the outputs in one of the groups (A11-A13, A21-A24, A31-A33) of outputs, wherein at least in one state of the power supply arrangement, each group (S1, S2, S3) of adjusting means is connected to a group of outputs (A11-A13, A21-A24, A31-A33) by way of a group of switchover means (U1, U2, U3).

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: In an AC/DC converter a preloading circuit is provided for a bridgeless boost converter, including a first diode D1 having its anode connected to a first AC input terminal of the AC/DC converter and having its cathode connected to a first DC output terminal of the AC/DC converter, a second diode D2 having its anode connected to a second AC input terminal of the AC/DC converter and having its cathode connected to the first DC output terminal of the AC/DC converter, a first switch S1 having one end connected to said first AC input terminal of the AC/DC converter and having its other end connected to a second DC output terminal of the AC/DC converter, and a second switch S2 having one end connected to said second AC input terminal of the AC/DC converter and having its other end connected to said second DC output terminal of the AC/DC converter.

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.

Abstract: A secondary circuit for a DC/DC converter, the secondary circuit having a main outlet and an auxiliary outlet, the secondary circuit comprising a main automatically controlled synchronous rectifier circuit receiving a voltage from the secondary winding of a transformer having an intermediate tap and delivering firstly a fullwave first rectified voltage for the main outlet and secondly a halfwave second rectified voltage, and an auxiliary synchronous rectifier circuit controlled by a synchronous post regulation control circuit receiving the halfwave second rectified voltage V2 and delivering a halfwave third rectified voltage for the auxiliary outlet.

Abstract: The invention relates to a circuit arrangement for igniting four thin silicon rods in a reactor for producing from the thin silicon rods silicon rods according to the Siemens process and for starting up such reactor. Also described is a method for igniting the thin silicon rods and for starting up, i.e., commencing operation of the reactor.