Abstract: This application relates to an active compensating device. In one aspect, the active compensating device includes two or more high current paths through which a second current supplied by a second device is transmitted to a first device, and a sensing unit sensing the first current on the high current paths and generating an output signal corresponding to the first current. The device may also include an amplifying unit amplifying the output signal of the sensing unit to generate an amplified current and a compensating unit generating a compensation current based on the amplified current and allowing the compensation current to flow to each of the two or more high current paths. The device may further include a first anti-disturbance unit connected in parallel to output terminals of the sensing unit, and a second anti-disturbance unit connected in parallel to input terminals of the compensating unit.

Abstract: The present invention provides a voltage multiplier system for an electrical device. The system includes a multi-vibrator adapted to generate a clock signal, and a voltage-multiplier module. Further, the multi-vibrator includes a pair of transistors, and at least one resistor-capacitor module. Further, the at least one resistor-capacitor module is connected between the emitter terminal and a base terminal of each of the pair of transistors to limit voltage between the base terminal and the emitter terminal of each of the pair of transistors. The voltage-multiplier module is adapted to boost an input voltage based on the clock signal received from the multi-vibrator.

Abstract: Systems and methods that automatically detect state of switches in power converters are disclosed. In one aspect, a power switch includes a first switch coupled between a power input node and a first terminal of a load, a second switch coupled between the power input node and a second terminal of the load, first and second current sense devices arranged to transmit first and second signals including at least one of a magnitude and polarity of first and second currents through the first and second switches, respectively, a first driver circuit arranged to transmit first control signals to the first switch based at least in part on a voltage at the power input node and the first signal, and a second driver circuit arranged to transmit second control signals to the second switch based at least in part on the voltage at the power input node and the second signal.

Abstract: An electrical device for a converter has at least one capacitor having a first connection and a second connection, a first busbar and a second busbar is disclosed. A respective busbar has a greater extension along a transverse direction than along a longitudinal direction, and has a greater extension along the longitudinal direction than along a vertical direction. The respective busbar has a first surface and a second surface which are opposite one other with respect to the vertical direction. The device also has a first contact-connection device electrically conductively contact-connected to the first connection and via which the first connection is electrically conductively connected to the first busbar, and a second contact-connection device electrically conductively contact-connected to the second connection via which the second connection is electrically conductively connected to the second busbar.

Abstract: A power conversion device is provided, and includes a major circuit part and a control device; the major circuit part includes a power conversion part converting, into AC power, power that is input, and a filter circuit causing the AC power output from the power conversion part to approach a sine wave; the control device controls power conversion by the major circuit part by controlling an operation of the power conversion part; the control device includes an overcurrent suppression controller; the overcurrent suppression controller calculates instantaneous value voltage output command values of the phases of the AC power output from the power conversion part to suppress an overcurrent at the output end of the major circuit part. Accordingly, a power conversion device and a control device of the power conversion device are provided in which the generation of an overcurrent can be suppressed even when a voltage-controlled operation is performed.

Abstract: A power conversion device includes a first converter configured to convert at least first battery power output by a first battery into first output power of a first voltage waveform based on an output waveform profile that has been input or set and output the first output power and a first generator configured to generate and output second output power based on the first battery power. Third output power of an alternating current (AC) control waveform generated by adding the first output power to the second output power is supplied to a load.

Abstract: A circuit arrangement for a resonant converter, wherein the resonant converter includes a galvanic isolation, where on the primary side the resonant converter includes a resonant inductor, a resonant capacitor and switching elements, which each have a switching frequency, where a resonant current flows through the resonant inductor and the resonant capacitor by switching the switching elements, where a bidirectional switching element is arranged in a current path of the resonant current flowing through the resonant inductor and the resonant capacitor, where a series circuit of a diode pair has a center connected to a terminal of the resonant inductor or resonant capacitor and each respective ends thereof to a switching element of the primary-side switching elements.

Abstract: A power converter for converting an input voltage at an input of the power converter into an output voltage at an output of the power converter may include a first power converter branch comprising a first capacitor, a first switch network, and a first inductor, the first switch network arranged to selectably couple the first capacitor between an input voltage, a first reference voltage, and a first terminal of the first inductor, wherein a second terminal of the first inductor is coupled to an output node; a second power converter branch comprising a second capacitor, a second switch network, and a second inductor, the second switch network arranged to selectably couple the second capacitor between the input voltage, a second reference voltage, and a first terminal of the second inductor, wherein a second terminal of the second inductor is coupled to the output node; and a third switch network between the first power converter branch and the second power converter branch, wherein the third switch network is

Abstract: A substrate support for a plasma chamber includes a base plate arranged along a plane, a first layer of an electrically insulating material arranged on the base plate along the plane, a plurality of heating elements arranged in the first layer along the plane, and a plurality of diodes arranged in respective cavities in the first layer. The plurality of diodes are connected in series to the plurality of heating elements, respectively. Each of the plurality of diodes includes a die of a semiconductor material arranged in a respective one of the cavities. The semiconductor material has a first coefficient of thermal expansion. A first side of the die is arranged on the first layer along the plane. A first terminal of the die is connected to a first electrical contact on the first layer.

Abstract: A power conversion device includes an inverter that generates an inverter voltage, a filter that receives the inverter voltage and outputs an output voltage, a detector that detects a DC component of the output voltage, a feedback controller that receives an AC voltage command and the DC component and determines an inverter voltage command such that the DC component is equal to a target value which is zero or a value corresponding to an offset error of the detector, and a PWM controller that receives the inverter voltage command and performs pulse width modulation control of the inverter. The feedback controller computes a compensation amount for compensating for the DC component and determines, as the inverter voltage command, the AC voltage command on which a product of an absolute value of a sine wave synchronized with a period of the AC voltage command and the compensation amount is superimposed.

Abstract: In the field of high voltage direct current (HVDC) power transmission networks there is a need for an improved sensor failure detector. A sensor failure detector, for use in HVDC power transmission networks, includes an intelligent electronic device. The intelligent electronic device has a first input to receive in-use a number of first sample values from a first sensor measuring a given operational characteristic, and a second input to receive in-use a number of second sample values from a second sensor measuring the same given operational characteristic. The intelligent electronic device also includes a comparator module that is programmed to compare the first and second sample values with one another, and to establish a sensor failure when the first and second sample values differ from one another by more than a primary threshold for a predetermined first number of samples.

Abstract: A control method of a zero-voltage switching converter with quasi-resonant control, the converter has a first switch and second switch respectively coupled to a primary winding and an auxiliary winding. The control method is: generating a hysteresis feedback signal based on an output feedback signal indicative of an output signal of the converter; comparing the hysteresis feedback signal with a ramp signal and generating a first comparison signal; comparing the output feedback signal with the ramp signal and generating a second comparison signal; generating a target locked valley number based on a valley pulse signal indicative of valleys of a voltage drop across the second switch, the first and second comparison signals; generating a turning on control signal corresponding to the target locked valley number for the second switch; and providing a control signal to turn on the first switch after turning off the second switch.

Abstract: Disclosed is a method and a control circuit. The method includes operating a buffer circuit (1) in a first operating mode or a second operating mode. Operating the buffer circuit (1) in the first operating mode includes buffering, by a capacitor parallel circuit including a first capacitor (11) and a second capacitor (12), power (Po) provided by a power source (3) and received by a load (4). Operating the buffer circuit (1) in the second operating mode includes supplying power to the load (4) by the second capacitor (12), and regulating a first voltage (Upn) across the second capacitor (12), wherein regulating the first voltage (Upn) comprises transferring charge from the first capacitor (11) to the second capacitor (12).

Abstract: The present disclosure provides a power converter including a first capacitor, a second capacitor, and a power module. The first capacitor and the second capacitor are connected in series. The power module is electrically connected to the first capacitor and the second capacitor and includes a circuit board, an absorption capacitor, a primary switch circuit, a magnetic component, and a secondary circuit. The absorption capacitor, the primary switch circuit, the magnetic component and the secondary circuit are disposed on the circuit board. A primary winding and a secondary winding of the magnetic component are electrically connected to the primary switch circuit and the secondary circuit respectively.

Abstract: Inverters that interface dc and ac power sources and loads are provided. An example application is solar power systems, in which a dc source of power is an array of solar panels; the inverter converts the dc power supplied by these panels to ac power that is fed into the utility grid. Another example is battery energy storage; the inverter changes the dc power of the batteries into ac power that is fed into the grid, and also can convert (rectify) ac power from the grid for charging the batteries. In one embodiment, for example, an inverter comprises slow switches that generate a three-level ac voltage, followed by a plurality of fast-switching half-bridges that introduce high-frequency pulse-width modulation into a plurality of ac output voltages.

Abstract: A resonance conversion device including an LLC synchronous resonance converter, a synchronous rectification controller, and a dead time adjustment circuit is provided. The LLC synchronous resonance converter includes a resonance tank and multiple synchronous rectification switches. The synchronous rectification controller controls the synchronous rectification switches, which are turned on with a delay based on a dead time length. The dead time adjustment circuit inductively couples electric energy at an output of the LLC synchronous resonance converter to the resonance tank, and provides a dead time control signal according to a resonance voltage variation of the resonance tank so that the synchronous rectification controller adjusts the dead time length according to the dead time control signal.

Abstract: A power supply switch circuit includes a first transistor that switches supplying of a first power supply voltage to a power supply terminal of a power amplifier, a switch controller that controls the first transistor and to which a second power supply voltage is applied, and a voltage selector that selects a higher voltage among the first power supply voltage and the second power supply voltage. The selected higher voltage is applied to a body terminal of the first transistor or a gate terminal of the first transistor.

Abstract: A switch mode power supply circuit with high voltage output, an electrostatic spray apparatus and agricultural plant protection apparatus using the same are provided. The switch mode power supply circuit is electrically connected in series with at least a pre-stage power converter and a post-stage power converter. In order to simplify the control, the switch of the pre-stage power converter is omitted, only one switch of the post-stage power converter is adopted to perform synchronous control. Since the multiple sets of power conversion circuits in the previous stage are connected in series, the turn ratio of the transformer in the power converter in the subsequent stage can be reduced. Therefore, the transformer can be miniaturized and the power supply circuit would be more suitable for agricultural plant protection machine and electrostatic spray apparatus.

Abstract: Turn-off circuits. In one aspect, the turn-off circuit includes a transistor having a gate terminal, a source terminal and a drain terminal, a first pull-down circuit connected to the gate terminal, a second pull-down circuit connected to the gate terminal, and a third pull-down circuit connected to the gate terminal. In another aspect, the first, the second and the third pull-down circuits are arranged to cause a turn off of the transistor by changing a voltage at the gate terminal at a first rate of voltage with respect to time from an on-state voltage to a first intermediate voltage, and from the first intermediate voltage to a second intermediate voltage at a second rate of voltage with respect to time, and from the second intermediate voltage to an off-state voltage at a third rate of voltage with respect to time, wherein the first rate is higher than the second rate.

Abstract: A short-circuit protection circuit, chip and system for a switched-mode power supply are disclosed. The short-circuit protection circuit includes: a sampling module for sampling an input voltage and producing a first voltage from the input voltage; a generation module for generating a second voltage from a reference voltage; a comparison module for comparing the first voltage and the second voltage; and an output module for producing, from a result of the comparison performed by the comparison module, and outputting a control signal for controlling an external power transistor in the event of a short circuit in the switched-mode power supply. According to the present invention, when an output short circuit is detected, a hiccup-mode duty cycle is adjusted according to the input voltage, thus avoiding great energy loss when the input voltage is high and enabling loaded startup or automatic output recovery after the short circuit condition is removed when the input voltage is low.