120 results about "Galvanic isolation" patented technology

A converter system, e.g., for vehicle-to-vehicle charging, includes galvanically-isolated modular first and second converters having the same maximum voltage rating, a direct current (DC) voltage bus interconnecting the converters, and an electronic controller. An input voltage to the DC bus is converted into an output voltage via switching control signals to the modular converters. The system's voltage rating may equal the maximum of the input and / or output voltage, or it may equal the maximum input voltage and be about 50-percent of the maximum output voltage. The maximum input and output voltages may be equal. When the voltage rating is about 50-percent of the maximum input voltage, capacitors may be connected in parallel with the modular converters on an input side thereof. Switching circuits may be connected to the bus to control the conversion of the input voltage via switching control signals.

This document describes, among other things, a vehicle power system that includes a traction battery, a six-phase inverter divided into two groups of six switches, a six-phase motor, and a pair of switches. In drive mode, the switches configure the inverter to connect the traction battery and the motor. In plug-in mode, the system reconfigures so that one group of switches connects an AC source to the motor, while the other group connects the motor to the traction battery.

A microelectronic device including an isolation device with a stabilized dielectric. The isolation device includes a lower isolation element, an upper isolation element, and an inorganic dielectric plateau between the lower isolation element and the upper isolation element. The dielectric sidewall of the inorganic dielectric plateau is stabilized in a nitrogen containing plasma which forms a SiOxNy surface on the dielectric sidewall of the inorganic dielectric plateau. The SiOxNy surface on the dielectric sidewall of the inorganic dielectric plateau reduces ingress of moisture into the dielectric stack of the inorganic dielectric plateau.

A modular, multiport power conversion system includes a central transformer with a plurality of windings inductively connected to the central transformer. The plurality of windings are connected to ports able to connect to both AC and DC-devices, including both power sources and power consuming nodes. Each port is able to be selectively galvanically isolated, such that a controller is able to determine from which ports power is drawn and / or to which ports power is transferred. The system is operable to use zero voltage switching (ZVS) and / or zero current switching (ZCS) for each port to reduce power loss and increase efficiency, especially for high frequency embodiments.

The utility model discloses a multichannel isolation type current and voltage signal processing board card comprising a board card main body, and the board card main body is provided with a plurality of signal input channels, a signal isolation module, a signal processing module, a microprocessor and a signal output interface. Each signal input channel comprises a current input port and a voltage input port, an isolation unit of the signal isolation module comprises a current isolation circuit and a voltage isolation circuit, and isolation input of multichannel signals is achieved. The signal processing module carries out amplification, analog-to-digital conversion and filtering processing on the isolated signals, the microprocessor carries out operation processing on the signals, and the signal output interface outputs the processed signals. According to the utility model, inter-channel signal interference and external electromagnetic interference are effectively prevented, the signal acquisition precision and the anti-interference capability of the board card are improved, and the connection requirements of various devices are met.

A radio frequency (RF) integrated gate driver includes a galvanically-isolated (GI) waveguide and an RF rectifier. The GI waveguide is configured to receive an RF signal from an RF source and to generate a rectifier input signal based on the RF signal. The RF rectifier is configured to receive the rectifier input signal from the GI waveguide and to generate, based on the rectifier input signal, a rectifier output signal to drive a gate of a power switch device.

The present invention relates to a charging system (1) having at least one DC power connector (2, 3) and at least one AC power connector (8) and a battery power connector (6), wherein the battery power connector (6) is capable of being connected to a battery (7), particularly a vehicle high-voltage battery (7), wherein at least one AC power connector (8) is connected to a rectifier (10), wherein a first DC voltage converter (11) is present. Electrical energy or current can be distributed in a highly efficient and optimized manner by means of a first DC voltage converter (11) connected to the DC side of a rectifier (10), wherein the first DC voltage converter (11) is configured as a boost / buck converter, wherein a current isolation element (12) is connected to the first DC voltage converter (11) and a battery power connector (6), wherein at least one DC power connector (2, 3) is connected to the rectifier (10) and the first DC voltage converter (11) via a first switch group (S1a), and is connected to the first DC voltage converter (11) and the current isolation element (12) via a second switch group (S1b).

The invention discloses a voltage converter arrangement for galvanically isolated power transmission between a three-phase alternating voltage connection and a direct voltage connection. The voltage converter arrangement comprises a transformer having three primary windings and one secondary winding. The three primary windings of the transformer are arranged in a delta configuration, with a primary winding and a preferably bipolar switching element being arranged in series in each case.

The invention relates to a small load isolation switch device for a bus system. The load disconnector device includes a fuse housing compartment for a fuse. A simple and small sized method for detecting fuse failure within the containment compartment is provided. Fuse faults are indicated by galvanic isolation signals.

The utility model relates to the technical field of current detectors, and particularly discloses an isolated current detector based on bus communication, which comprises a detector body. The detector body is provided with a current isolation circuit, a protection sampling circuit, a current amplification circuit, an RC filter circuit, a reference voltage generation circuit, a main control circuit, a two-bus communication circuit, a DCDC step-down circuit and an LDO voltage stabilizing circuit, and the protection sampling circuit is electrically connected with the current isolation circuit and the current amplification circuit. The RC filter circuit is electrically connected with the current amplification circuit and the main control circuit, and the two-bus communication circuit, the DCDC step-down circuit and the LDO voltage stabilizing circuit are electrically connected with the main control circuit. According to the utility model, internal and external currents are isolated by arranging the current isolation circuit, and current signals output by the external current transformer can be accessed without polarity, so that construction wiring is facilitated, and on-site rapid installation is facilitated.

A microelectronic device including an isolation device with a stabilized dielectric. The isolation device includes a lower isolation element, an upper isolation element, and an inorganic dielectric plateau between the lower isolation element and the upper isolation element. The dielectric sidewall of the inorganic dielectric plateau is stabilized in a nitrogen containing plasma which forms a SiOxNy surface on the dielectric sidewall of the inorganic dielectric plateau. The SiOxNy surface on the dielectric sidewall of the inorganic dielectric plateau reduces ingress of moisture into the dielectric stack of the inorganic dielectric plateau.

This utility model pertains to electrical engineering, specifically to step-up converter devices incorporated into backup power supply devices for high-voltage loads obtained from a low-voltage battery. The converter is designed for highly efficient conversion of energy obtained from a low-voltage source, such as a battery, into a high, stabilized voltage for powering high-voltage loads, such as inverters or loads capable of being supplied with constant voltage. The technical result of this utility model is an increase in the efficiency of the output voltage while minimizing switching losses through soft switching and operation with low currents; increased reliability; and an expansion of the device's scope of application. This technical result is achieved through a combination of essential features.The essence of the utility model is that a two-link converter with galvanic isolation is connected to a primary source (1) and to an unregulated push-pull resonant step-up converter (2) connected to a control circuit (3) configured to form symmetrical current pulses alternately flowing from a common wire to a source through its half-winding of a transformer TR1 with a frequency set by the control circuit (3), wherein the unregulated push-pull resonant step-up converter (2) is connected to a step-up stabilized converter (4) connected to a control circuit (5) configured to convert a low, unstabilized input voltage at the terminals of the primary source (1) into a stabilized high voltage at the load (6).

An integrated circuit (500) comprises a semiconductor layer (130) with a first section (131) in a first device area (310) and a second section (132) in a second device area (320). A galvanic isolation structure (330) is formed between the first section (131) and the second section (132) of the semiconductor layer (130). A capacitive coupling element (200) is formed on a first surface (139) of the semiconductor layer (130). The capacitive coupling element (200) comprises a first lower electrode (210) in the first device area (310) and a capacitor dielectric (250) that separates the first lower electrode (210) from an upper electrode (290) extending over the galvanic isolation structure (330). The first lower electrode (210) is signal-connected to a first circuit element (315) in the first device area (310).The upper electrode (290) is operatively connected to a second circuit element (325) in the second device area (320).

The galvanic isolation transformer (400) comprises: - a magnetic core (102); and - a primary winding (104A-C) and a secondary winding (106A-C), wound around the magnetic core (102) so as to be magnetically coupled to each other.It further comprises two electrically insulating screens (112, 114, 502, 504) interposed between the primary winding (104A-C) and the secondary winding (106A-C), the two electrically insulating screens (112, 114, 502, 504) being made of two different materials, such that the first material has a value for a first property at least 10%, preferably 20%, higher than the second material, and such that the second material has a value for a second property at least 10%, preferably 20%, higher than the first material, the first and second properties being taken from: operating temperature range, dielectric strength, inverse dielectric constant, volume resistance, chemical resistance, mechanical properties, non-flammability, heat capacity, aging, and thermal conductivity. Figure for the abstract: Fig. 5.

The invention relates to a charging connector (1) for an electric or hybrid vehicle, with a locking mechanism (2) for locking and unlocking, which has an actuator (4) with which a movement can be performed and which is connected to two galvanically connected contact elements (5, 6) such that the movement of the actuator (4) during locking causes the contact elements (5, 6) to run along a conductor track (7, 8) in one direction and the movement of the actuator (4) during unlocking causes the contact elements (5, 6) to move along the respective conductor track (7, 8) over the same distance as during locking in the opposite direction, one of the two conductor tracks (8) is galvanically interrupted by means of a galvanic isolation (9), the contact element (6) running along the conductor track (8) with the galvanic isolation (9) has two spaced-apart contacts,The contact elements (6) are provided with contact surfaces (10) that establish galvanic contact with the conductor track (8), and the contact surfaces (10) and the galvanic isolation (9) are geometrically designed such that when the contact element (6) having the two contact surfaces (10) runs along the conductor track (8), if one contact surface (10) is not in galvanic contact with the conductor track (8) due to its position within the galvanic isolation (9), the other contact surface (10) is always in a position outside the galvanic isolation (9) on the conductor track (8), so that the other contact surface (10) is in galvanic contact with the conductor track (8). In this way, a means is provided to monitor the locking and unlocking process without interruption.

A system for detecting electrical current in water includes a controller board and at least one sensor board communicatively coupled thereto. The controller may include a microcontroller configured to process signals, a display to show status information, at least one light-emitting diode to generate visual alerts, a siren for audible alerts, at least one button for user input, and a communication module to transmit data to a remote server. Each sensor board may include a tetrahedral electrode assembly configured for submersion in water to measure electrical current in three-dimensional space, a sensor microcontroller for processing measurements and generating wake-up signals, and galvanic isolation circuitry. A power management system may manage power from grid, solar, and battery sources, and a cable system may provide power and communication between the controller and sensor board.

Aspects of a re-timer-based isolator provide galvanic isolation between a first side of a system including a high voltage source and a second side of the system that may contact a person. An equalizer arranged with a physical layer on a first substrate is isolated from re-timer components arranged on a second substrate.

The invention relates to the technical field of tumor electric field treatment, and discloses a tumor electric field treatment system and an alternating electric signal detection circuit thereof, and the alternating electric signal detection circuit comprises a current isolation detection unit which is configured to detect a current signal of an alternating electric signal so as to output a current detection signal; the voltage isolation detection unit is configured to detect a voltage signal of the alternating electric signal so as to output a voltage detection signal; the signal sampling unit comprises a first sampler powered by dual power supplies so as to sample positive and negative half-wave signals of the current detection signal to obtain a current sampling signal, and the signal sampling unit determines the current of the alternating electric signal based on the current sampling signal and samples the voltage detection signal to obtain a voltage detection signal; therefore, the voltage of the alternating electric signal is obtained. According to the application, the voltage and current of the alternating electric signal applied to the human body can be accurately and timely detected through the signal detection circuit constructed by simple and few components.

The present disclosure is directed to systems and methods for direct electrical heating of process heaters tubes (e.g., reactor tubes) using galvanic isolation techniques. The disclosure is also directed to systems and methods for direct electrical heating of process heaters tubes wherein the tubes are galvanically isolated in such a manner as to avoid the use of electrical insulation of the tube from the rest of the system, such as the other tubes, the tube inlet header and / or the tube outlet header, and the reactor shell.

The utility model discloses an ammeter detection system comprising a workbench, a conveying mechanism, a connection mechanism, a current isolation mutual inductor, an adapter, a first lead and a second lead. The conveying mechanism is used for conveying ammeters; the connection mechanism is installed on the workbench, located beside the conveying mechanism and used for detecting various electric meters. The current isolation mutual inductor is located below the connection mechanism. The adapter is located between the connection mechanism and the current isolation mutual inductor. The first wire is connected between the connection mechanism and the adapter. The second wire is connected between the adapter and the current isolation mutual inductor. The current isolation mutual inductor in the embodiment is connected below the connection mechanism through the adapter, and the space in the height can be fully utilized, so that the occupied area of the electric meter detection system is reduced, and the construction cost is reduced.

The invention pertains to a method of power conversion in an electric drive system of a mining or construction machine. The method involves receiving an alternating current (AC) voltage from an external power source, boosting and rectifying the received AC voltage, and then reducing the boosted and rectified voltage. The reduced voltage is then galvanically isolated, providing an isolated direct current (DC) voltage for a DC bus of the electric drive system. This method allows for efficient power conversion and management in heavy-duty machinery used in mining and construction applications. A power conversion unit implementing the method and an electric mining and / or construction machine comprising such a power conversion unit are also described.

Electronically Cut-Off Protective Equipment The invention relates to an electronically cut-off protective equipment comprising a current line between a first connection terminal (1) and a second connection terminal (2), an electronic cut-off unit (3) comprising at least one electronic power cut-off component, a control unit (5), a galvanic isolation mechanism (6) comprising at least one set of separable contacts (7) comprising a fixed contact (8) and a moving contact (9), a movable control member (10) connected to the moving contact (9) by a lock, a sensor (12) for detecting the position of the control member (10) characterized in that the control member (10) comprises a magnet (13), the sensor (12) is a Hall effect detection sensor configured to detect a magnetic field from the magnet (13) and transmit a detection signal to the control unit (5),and the control unit (5) is configured to control the opening of said at least one electronic switching component before the opening of at least one set of separable contacts (7), provided that a variation in the magnetic field over time, representative of the switching of the control member (10) from the on position to the off position following its actuation, is detected from the detection signal. Figure to be published with the abbreviation: Fig. 1A,

The invention provides a three-phase isolation AC / DC converter and a control method, and relates to the technical field of switching power supplies. The three-phase isolation AC / DC converter comprises a composite compensation unit which is used for converting a three-phase alternating current output by a three-phase alternating current power supply into a direct current and controlling an error between an average value of a first current and a first reference current to be smaller than a first preset threshold value; the first current is the current corresponding to the minimum absolute value of the current in the three-phase alternating current; the isolation conversion unit is connected with the composite compensation unit and used for controlling the error between the average value of the input current of the isolation conversion unit and the second reference current to be smaller than a second preset threshold value; the first reference current and the second reference current are determined based on the target output power and the preset power factor. Through cooperative control of the composite compensation unit and the isolation conversion unit, conversion of three-phase alternating current and direct current is achieved, front-stage and back-stage decoupling is achieved without depending on a bus capacitor, therefore, a pre-charging circuit does not need to pre-charge the bus capacitor, and the starting response speed is increased.

What is needed is an improved signal transmission system that can preserve the bandwidth, accuracy, and fidelity of all of the high speed differential signals under severe common mode and environmental conditions.SOLUTION: Optical probing systems transmit high fidelity analog signals from a device under test (DUT) to a measurement instrument. The system receives a differential input signal and splits the differential input signal into a high frequency (HF) component and a low frequency (LF) component. Each component is independently modulated using a different analog modulation technique and transmitted over a separate optical fiber. The architecture maintains galvanic isolation between the input and output devices and allows for independent transmission of signal portions optimized for bandwidth and accuracy. The signals are demodulated, delay-matched, and recombined in the analog domain to produce a reconstructed full-bandwidth output.SELECTED DRAWING: Figure 3

The invention relates to a charging plug connector (1) for an electric or hybrid vehicle, having a locking mechanism (2) for locking and unlocking, which locking mechanism has an actuator (4) by means of which a movement can be carried out and which is connected to two galvanically interconnected contact elements (5, 6) in such a way that the movement of the actuator (4) during locking causes the contact elements (5, 6) to run along on a respective conductor track (7, 8) in one direction and the movement of the actuator (4) during unlocking causes the contact elements (5, 6) to move on the respective conductor track (7, 8) in the opposite direction on the same path as during locking, one of the two conductor tracks (8) is galvanically interrupted by means of a galvanic isolation (9), the contact element (6) running along on the conductor track (8) having the galvanic isolation (9) is provided with two mutually spaced contact surfaces (10) which establish the galvanic contact to the conductor track (8), and the contact surfaces (10) and the galvanic isolation (9) are geometrically designed in such a way that, when the contact element (6) having the two contact surfaces (10) runs along on the conductor track (8), if a contact surface (10) is not in galvanic contact with the conductor track (8) due to its position in the region of the galvanic isolation (9), the other contact surface (10) always has a position outside the galvanic isolation (9) on the conductor track (8) so that the other contact surface (10) is in galvanic contact with the conductor track (8). This provides a possible way of uninterruptedly monitoring the locking or unlocking process.

A DC-DC converter includes a primary-side control-circuit having an oscillator driving a transformer in response to assertion of a PWM-signal to transmit power from the primary to the secondary and ceasing in response to deassertion of the PWM-signal, and a receiver demodulator circuit receiving / demodulating a feedback signal sent from the secondary to the primary by comparing an instantaneous value of an envelope indicative of voltages at the primary-coil to an average-value of the envelope to produce a reset-signal. A PWM circuit asserts the PWM-signal in response to a set-signal and deasserts the PWM-signal in response to assertion of the reset-signal. A secondary-side control-circuit rectifies the received power, asserts an intermediate feedback-signal if feedback indicative of the output voltage is greater than a reference-voltage, and connects a capacitance between the secondary and ground in response to assertion of the intermediate feedback-signal to modulate and send the feedback to the primary.

A set of multi-winding transformer designs that achieve leakage integration in multi-port power electronics systems is presented. The magnetic design structures are extendable to realize an N-port multi-winding transformer with or without leakage inductance integration, that interfaces different voltage levels (high-voltage and / or low-voltage) with galvanic isolation. The disclosed designs enable: (i) reduced number of discrete magnetic components (ii) high efficiency and high power density; (iii) reduced transformer parasitic capacitances. Furthermore, a global transformer optimization approach that considers magnetizing and leakage inductances, core and winding losses, and parasitic capacitances is presented to systemize the sophisticated multi-winding integrated leakage transformer design process.

A semiconductor die includes a silicon layer. A first device circuit is formed in a first region at a first end of the silicon layer, and a second device circuit is formed in a second region at a second end of a silicon layer at a distance from the first region. The first end is opposite the second end, and the first device circuit is galvanically isolated from the second device circuit.

According to this disclosure, a first driver circuit (306) can be configured to output a first signal (204), and a second driver circuit (308) can be configured to output a second signal (206), wherein the first signal (204) and the second signal (206) define the differential signal, e.g., for communication across a galvanic isolation barrier. To reduce power consumption and also enable effective communication in the presence of noise, each driver circuit (306, 308) can include multiple driver stages (322, 324; 332, 334), and each driver circuit (306, 308) can be capable of using different driver stages (322, 324; 332, 334) at different times, e.g., to switch from a low-power mode to a high-power mode when necessary or desirable.The switch from low-power mode to high-power mode can be based, for example, on the detected noise on the communication channels.