44 results about "Current switch" patented technology

The application provides a container type water-cooled data center and a control method, and belongs to the technical field of temperature control. The container type water-cooled data center comprises a computing power service cabinet system, a pump station control system, a plate unit and a power distribution cabinet unit arranged in a container, and further comprises an external liquid cooling system. The computing power service cabinet system comprises a plurality of independently operated modules, each module comprises a plurality of server cabinets, each server cabinet corresponds to a power distribution branch, the plurality of power distribution branches in the same module are collected into the same power distribution bus, the plurality of power distribution buses in the plurality of modules are collected into the same power distribution bus, and the power distribution bus is provided with a current switch for controlling the power distribution bus. The liquid cooling system cools and dissipates heat for the computing power service cabinet system through circulation of a medium. The plate unit serves as a bypass branch of the liquid cooling system and undertakes the heat exchange function of the liquid cooling system in part or in whole. The pump station control system provides power for the circulation of the medium. The application has high integration, small space occupation, high density in unit space, and is safe and reliable.

The present application belongs to the technical field of switch cabinet operation and maintenance simulation, and particularly relates to a switch cabinet fault simulation training and examination system and method, comprising a touch liquid crystal screen, a main control cabinet, a drawer, a fault simulation cabinet, a control signal input and output cabinet and a plurality of data lines; the fault simulation cabinet is connected with the main control cabinet through the data lines, and the fault simulation cabinet is arranged on the top of the main control cabinet; a power supply cabinet is connected to one side of the main control cabinet, and the top of the power supply cabinet is provided with the drawer; the rear side of the main control cabinet is connected with the control signal input and output cabinet; and the fault simulation cabinet is connected with the touch liquid crystal screen through the data lines. The present application combines the complex electrical primary system diagram with the entity cabinet, can simulate the practical operation and explanation, realizes the "visualization" training of the switch cabinet electrical primary system principle diagram, and solves the problem of the poor training effect of the current switch cabinet electrical primary system practical operation training which is based on the theory training and auxiliary on-site partial understanding learning.

This application discloses a method and apparatus for three-phase imbalance and harmonic compensation, relating to the field of power distribution network control technology. It synchronously collects three-phase voltage on the grid side, three-phase current on the load side, and DC bus voltage at multiple consecutive moments from an active power control device. Based on this, a time-series data sequence is constructed and input into a pre-trained gated cyclic unit network to obtain the initial compensation current. The DC bus current compensation component is determined based on the DC bus voltage and its reference value. The loss current component is estimated based on the current switching state function and output current of the active power control device, and the target compensation current is determined accordingly. A current tracking error vector is determined based on the target compensation current and the actual compensation current. A switching drive signal is generated based on the current tracking error vector. Under the control of the switching drive signal, the target compensation current is output, thereby achieving the mitigation of load harmonics, reactive power, and three-phase imbalance components.

The application discloses an earphone box and a wireless earphone assembly, and the earphone box comprises a box body, a mounting shaft and a placing groove are arranged on the box body, and the placing groove is used for placing electronic devices; a cover body is arranged on the box body, a sleeving groove is arranged on the cover body, and the sleeving groove is sleeved with the mounting shaft; a rotating mechanism is arranged in the sleeving groove, the rotating mechanism is connected with the mounting shaft and the cover body, and the cover body can rotate around the mounting shaft to selectively shield or expose the placing groove. Compared with the current switch box mode of a flip cover, the cover body of the earphone box is rotated to open the box in situ, after the earphone box is opened, the cover body and the box body are not easy to rotate, the spatial position of the cover body on the box body is almost unchanged, the user can conveniently take and place the earphone from the box body, and the use experience of the user is improved.

The application discloses a radio frequency unit power control method, electronic equipment and storage medium, and belongs to the communication technical field.The method comprises the following steps: acquiring utilization state information of a unit channel of a radio frequency unit; and adjusting a current switch state of the unit channel to a target switch state according to the utilization state information.The technical scheme of the application adjusts the current switch state of the unit channel of the radio frequency unit to the target switch state according to the utilization state information by acquiring the utilization state information of the unit channel of the radio frequency unit, so that the switch state of the unit channel of the radio frequency unit is adaptively adjusted according to the utilization state information of the unit channel, the user experience is not affected, and the effect of saving energy and reducing consumption of the radio frequency unit is achieved.

This invention discloses a current-source wireless power transfer system topology and modulation method, relating to the field of current-source wireless power transfer system control technology. This circuit directly transmits electrical energy from the solar cell to the energy storage battery via wireless power transfer without the need for a step-up / step-down circuit, achieving single-stage wireless energy transfer with high efficiency. By designing a proprietary modulation method for this circuit, zero-current switching can be achieved, reducing switching current stress and losses. Through resonance and compensation circuits, switching can be achieved near the zero-crossing point of the inverter output voltage, achieving near-zero-voltage switching, further reducing switching voltage stress and losses, and realizing high-efficiency energy transfer. When the input is a photovoltaic cell connected through a filter circuit, the voltage of the photovoltaic cell can be controlled by phase shifting to achieve maximum photovoltaic power output and improve power generation efficiency.

A high-current switchgear armored structure includes several busbar terminals arranged vertically and flush on the inner side of the busbar area. Each busbar terminal is covered with an insulating and thermally conductive coating using injection molding. Several passive heat dissipation pipes have their other ends connected in parallel to vertically downward-facing liquid-cooled heat-conducting pipes. These liquid-cooled heat-conducting pipes are vertically inserted and connected through each insulating and thermally conductive coating. The insulating and thermally conductive coatings are in contact with the busbar terminals for heat conduction. This design allows for safe heat conduction between the busbars and busbar terminals, which were originally only able to be cooled by airflow. The insulating and thermally conductive coatings also enable the liquid-cooled heat-conducting pipes to conduct temperature to the busbar joints, and further assist in the efficient heat dissipation of the main heat sources within the busbar area, namely the busbars and busbar joints. This design not only improves heat dissipation efficiency but also achieves internal heat dissipation, preventing condensation and ensuring the safety and stable operation of the entire cabinet.

This application discloses a switching assembly, an electronic device, and a switching state detection method, including a main control module, a transmitting module, a receiving module, and a switching unit. The main control module is connected to both the transmitting and receiving modules. The transmitting module has a corresponding detection area for transmitting optical signals to the detection area. The switching unit includes at least two switching states and at least two reflective surfaces, with each switching state corresponding to one reflective surface. Different reflective surfaces have different reflection parameters, and the reflective surface located within the detection area differs depending on the switching state of the switching unit. The receiving module receives the optical signals reflected from the reflective surfaces within the detection area. The main control module acquires the intensity parameters corresponding to the optical signals received by the receiving module and determines the current switching state of the switching unit based on the intensity parameters. This application can determine the current switching state based on the intensity parameters corresponding to the received optical signals, improving the accuracy of detecting the current switching state.

Provided is a complete set of switch equipment for pumped storage power station units, which comprises three single-phase switch cabinet devices that are electrically connected to achieve three-phase mechanical linkage, the three-phase switch equipment is divided into three phases, the circuit breaker controlled by the single-phase switch cabinet device is formed by two vacuum arc chambers in parallel, the single-phase switch cabinet device comprises a transmission box and a mechanism box that are fixedly connected and distributed in front and back, a spring operating mechanism is installed in the mechanism box, the output crank of the spring operating mechanism is connected with the input end of a four-bar linkage transmission mechanism arranged in the transmission box, and the two output ends of the four-bar linkage transmission mechanism are connected with the lower ends of the insulation pull rods of the two vacuum arc chambers of the corresponding phase circuit breaker. The utility model solves the problems of long procurement cycle, high procurement cost and untimely after-sales service caused by excessive dependence of pumped storage power station unit switch equipment on imported equipment, improves the shunt capacity and breaking capacity of the circuit breaker, solves the problem of heating of the large-current switch, and the opening and closing action is reliable, rapid and compact in structure.

The utility model discloses a kind of overcurrent protection circuit and intelligent power distribution unit, comprising: current detection module, switch module, control module and at least one first suppression element;The output end of power supply is connected to the first end of current detection module, the first end of switch module is connected to the second end of current detection module, the input end of control module is connected to the output end of current detection module, and current detection module is used to collect the output current of power supply;The second end of switch module is connected to load, and the output end of control module is connected to the control end of switch module, control module is configured to when output current is greater than set threshold, control switch module is turned off;Wherein, first suppression element is connected to the first end and the second end of switch module, for when switch module is turned off, overvoltage pulse generated by the second end of switch module is inhibited.The utility model can solve the problem that switch module is damaged due to overvoltage pulse generated by inductive load when overcurrent is turned off.

This invention relates to a multi-resonant, multi-step-down ratio switched-capacitor converter, belonging to the field of power electronics technology. The invention addresses the technical problem of existing switched-capacitor converters struggling to achieve multiple fixed step-down ratios while maintaining high efficiency and high power density within the same topology. The invention includes: an input port; a switching network composed of fourteen MOSFET switches; a capacitor network composed of five flying capacitors; and first and second resonant inductors connected between the switching network and the output side. The converter is a single-stage topology, with the above components forming a single resonant network. By adjusting the switching timing, three fixed step-down ratios—8:1, 4:1, and 2:1—can be achieved within the same topology. The converter operates in open-loop mode, with the switching frequency matching the resonant frequency, achieving zero-current switching for all switches. The two-phase circuits on the output side operate in a staggered 180° manner to reduce current stress. The output side also includes first and second output ports connected in parallel, along with an output filter capacitor, which, after filtering, jointly supply power to the load.

This invention discloses a zero-current switching active clamp forward converter and its control method and device, relating to the field of converter technology. The key technical points are: the invention samples the resonant current signal from the secondary side of transformer T1 and combines it with a pulse signal to generate an adaptive on-time signal. Then, based on the adaptive on-time signal, a complementary drive signal with a dead zone is generated to control the on- and off-state of the primary-side main power MOSFET Q1 and the reset MOSFET Q2 in the main power circuit. The pulse signal is used to trigger the operation of the zero-crossing detection control unit, enabling the adaptive on-time signal to dynamically adjust the on-time of the primary-side main power MOSFET Q1. This ensures that the zero-current switching active clamp forward converter achieves zero-current turn-off across the entire load range, reducing the turn-off losses of power devices across the entire load range, improving converter efficiency, reducing harmonics during the switching process, and optimizing the converter's EMI characteristics.

The invention relates to intelligent time control for switching between stages of a device via a single capacitor. An apparatus (100) includes a first current source (102) configured to provide a first bias current and a second current source (104) configured to provide a second bias current, wherein the first bias current is greater than the second bias current. The apparatus further comprises a current switch (106) configured to receive the first bias current and the second bias current at two input terminals (103 and 105) thereof, and to provide an output current at an output terminal (107), wherein the output current is one of the first bias current and the second bias current selected by a current switch control signal to the current switch. The apparatus (100) further includes a capacitor (108) coupled between the output terminal (107) and a ground terminal, where the capacitor (108) is charged by the output current and provides an output voltage at the output terminal (107).

A device comprises a first current source configured to provide a first preload current and a second current source configured to provide a second preload current, the first preload current being greater than the second preload current. The device further comprises a current switch configured to accept the first preload current and the second preload current at its two input terminals and to provide an output current at one output terminal, the output current being one of the first preload current and one of the second preload current selected by a current switch control signal to the current switch. The device further comprises a capacitor coupled between the output terminal and a ground terminal, the capacitor being charged by the output current and providing an output voltage at the output terminal.

The self-healing DC system with intelligent bus undervoltage compensation function includes two interconnected DC systems, 1# and 2#. A bidirectional DC-DC compensator DC1 is installed between the power supply DC buses. The bidirectional DC-DC compensator DC1 consists of three modules B1, B2 and B3, each containing an H-bridge. The H-bridges in module B3 are connected by an isolation transformer T1. Through the fixed turns ratio and bidirectional flow of the isolation transformer T1, combined with the current flow direction control of module B1 / module B2, bidirectional compensation between the two DC systems is achieved. Furthermore, module B3 implements zero-current switching (ZCS), and module B1 / module B2 implements zero-voltage switching (ZVS), thereby avoiding high-voltage spikes in the MOSFETs within the H-bridges. This system is suitable for high-power DC power supply systems.

The utility model discloses a large current switch of different switch button can be adapted, including panel, at least one base of installation panel and button rotatable installation on the base, its characterized in that a plurality of buckle type terminal are installed in the base, detachable and the connecting electrically conductive support and conductive plate of buckle type terminal and the bilateral hinged plate type movable contact piece of connecting with electrically conductive support and conductive plate respectively, the support point of satisfying different size and appearance button support is still equipped with on the base. The utility model discloses through using buckle type terminal, avoid adopting riveting type terminal and appear the situation of riveting badly, can also reduce the cost of production simultaneously, through bilateral hinged plate type movable contact piece based on electrically conductive support and swing, respectively with the conductive plate of both ends is connected and realizes the opening and closing of switch, also through the connecting strength between bilateral hinged plate type movable contact piece and conductive plate simultaneously, and then can use under the large current.

This utility model relates to the field of lifting systems, specifically a digital X-ray tube lifting system. It includes a support unit, of which two are symmetrically arranged, and further includes two positioning units, symmetrically fixedly installed on the upper end of the support unit, which position and clamp pipes of different diameters; and a lifting unit, fixedly installed on the upper end of the positioning units. In this utility model, the lifting beam of the lifting unit is fixedly connected to the gantry crane via lifting locking bolts, enabling directional clamping and assembly of the pipe body. When the lifting beam is not under force, the device itself and the gravity of the centering outer rail clamp the subsea pipeline. The positioning support device can adjust the support force and clamping force of the pipe body according to on-site requirements to meet the clamping needs of different subsea pipeline diameters. After clamping, the centering outer rail is locked and fixed by magnetic blocks. After testing, the current switch is turned off to eliminate the magnetic attraction, facilitating the removal of the centering outer rail.

This disclosure relates to a fully controllable power semiconductor switching assembly (40) comprising a first unit (51, 61, 71) having a latching power semiconductor switching device (41) controlled by a first gate terminal (44), a second unit (52, 62, 72) having a non-latching power semiconductor switching device (42) controlled by a second gate terminal (45), and a power semiconductor diode (43). The latching power semiconductor switching device (41) and the non-latching power semiconductor switching device (42) are connected in parallel with respect to the current switched by the switching assembly (40). The power semiconductor diode (43) is connected in antiparallel with respect to the current switched by the switching assembly (40). This disclosure further provides a power semiconductor device (100), a snubberless power converter, and a method for manufacturing the same.

This application provides a self-triggering synchronous sampling system based on switch information reconstruction, comprising: a switch state signal extraction module for converting the voltage across the power semiconductor device under test into a digital switch state signal; a device state duration acquisition module for determining the on-state duration, off-state duration, and switch cycle within at least one switching cycle; an on-state duration prediction module for predicting the on-state duration of the current switching cycle; a sampling time setting module for determining the sampling time within the on-state duration of the current switching cycle; a fixed-frequency sampling and data filtering module for generating a fixed-frequency sampling trigger timing sequence; and a sampling module for issuing a sampling trigger signal and sampling upon reaching the sampling time or the fixed-frequency sampling trigger timing sequence. This application reconstructs the switch state based on the voltage across the power semiconductor device under test, without relying on a drive signal carrier to generate the sampling trigger signal, thus improving the accuracy and reliability of synchronous sampling.

This invention relates to the field of intelligent production line control technology, and discloses a variable frequency-servo dual-mode operation control method and system for intelligent production lines. The method involves: when the motor of the intelligent production line is driven in variable frequency control mode, acquiring the real-time status of the motor and determining whether the mode switching conditions are met. If the mode switching conditions are met, a mode switching request signal is output. Within the current switching cycle, the variable frequency control mode is maintained, and the initial position loop setpoint, initial speed loop integral value, and initial current loop integral value of the servo control mode are injected respectively. After injection, the servo control mode is activated. When the phase current deviation exceeds the current deviation threshold, the pre-synchronization state injection process is re-triggered. When the phase current deviation does not exceed the current deviation threshold, the servo control mode switch is confirmed to be successful, and the servo control mode operation is maintained. This invention improves the drive control accuracy and operational stability of intelligent production lines under mixed operating conditions.

The application discloses a kind of calibration device and method for battery charge-discharge tester, including control module, and with the battery charge-discharge tester, current switching module, voltage switching module and project switching switch module of control module electricity connection, control module is closed or opened by controlling the switch tube in project switching control unit, so that electronic load or analog battery is connected with battery charge-discharge tester, realizes the quick flexible configuration of battery test condition under charge test scene and discharge test scene, and uses the current data, voltage data and power data of multiple channels collected by current switching module or voltage switching module, realizes the data of multiple channels parallel acquisition, so as to judge whether the channel needs to be calibrated according to the data collected, effectively improve the accuracy and efficiency of battery charge-discharge tester calibration.

The present application relates to the technical field of various anti-influence quantity test, and discloses a power meter various anti-influence quantity test system and method thereof, which comprises a test station module, a vision module, a program-controlled power module, a current generator, a current switching unit, a type switching box, a communication server, a network switch and an industrial computer, the test station module comprises a plurality of test object stations, the test object stations are used for matching test pieces, and the type switching box is used for switching voltage or current to each test object station. The test is suitable for various types of collection terminals, has strong compatibility, can realize access test of all types of measured objects without replacing the core test module, meanwhile, various test functions are integrated, test coverage is comprehensive, one-stop comprehensive test of multiple influences is realized, the test process does not need to be split, test efficiency is improved, automatic test of different measured objects and different influences is completed, manual switching of parameters and equipment is avoided, batch detection capacity is improved, and test efficiency is high.

A circuit device includes a plurality of driver circuits, each driver circuit configured to output a respective current, and a switch network including a plurality of switch network inputs. Each switch network input of the plurality of switch network inputs is coupled to an output of a respective driver circuit of the plurality of driver circuits to receive the respective current from the respective driver circuit, a switch network output, one or more control inputs, and a plurality of switches. The switch network is configured to adjust one or more switches of the plurality of switches to provide, to a quantum computing circuit at the switch network output, an output signal including a sum of a subset of the currents from the plurality of driver circuits, the subset of the currents corresponding to the one or more control signals.

A method for computing an optimized pulse pattern for an electrical converter is presented. The optimized pulse pattern comprises a series of switching transitions, each switching transition comprising a switching angle and a switch position. The switching angles are computed by minimizing a total demand distortion of a load current produced by the optimized pulse pattern, wherein an objective function is minimized, which models the total demand distortion of a load current in dependence of the switching angles and switch positions. The total demand distortion of the load current is minimized subject to at least one additional constraint, which limits a turn-off current, and / or a switching loss, a temperature and / or a voltage to be blocked for a set of semiconductor devices of the electrical converter.

This utility model provides a high-gloss vacuum switch static conductive rod fixing device, relating to the field of power distribution system technology. The inner wall of the flange is threaded with a screw rod, the outer surface of the screw rod is threaded with an arc cap, the outer surface of the screw rod is threaded with a second bolt, the outer surface of the second bolt is fixedly connected with a limiter, the outer surface of the screw rod is bolted with a second washer, and the outer surface of the screw rod is engaged with a first washer. This utility model addresses three core aspects: enhancing fixing rigidity, optimizing anti-loosening measures, and improving force balance. It also considers electrical performance such as conductivity, insulation, and ease of installation and maintenance, transforming single-point force into multi-point uniform force, reducing local stress concentration. It is particularly suitable for high-current switches, reducing the impact of electrodynamic shocks. The outer side is fixed to the flange with bolts, forming a dual constraint of axial limiting and radial anti-sway.

The application discloses a variable inductance-based solid-state power controller resonance mode zero-voltage turn-on method, and belongs to the technical field of power electronic conversion. The method aims at the problems of large device peak stress, large heat dissipation demand and poor load adaptability during the start of a solid-state power controller. The circuit of the application comprises a resonance network composed of a variable resonance inductor and a pre-charge capacitor, a main loop power tube and an auxiliary power tube. The variable resonance inductor is used to control the resonance mode in a critical damping state for different loads with resistive, inductive and capacitive properties, so that the pre-charge capacitor is discharged without oscillation to realize zero-voltage turn-on of the main power tube and zero-current switching of the auxiliary power tube. A resonance cavity energy recovery device is arranged to transmit resonance energy to a load. The circuit significantly reduces the peak stress of the main loop device during start, reduces the switching loss of the auxiliary loop device, recovers resonance energy to the load end, reduces the heat dissipation demand, adapts to different property load scenes, and is suitable for high-power and high-reliability fields.

This utility model pertains to metalworking, specifically to devices for electrochemical abrasive machining of conductive components and electrochemical straightening of conductive tools. The device comprises a current source for electroabrasive machining of the component, a current source for electrochemical straightening of an abrasive conductive tool, a current switching unit equipped with two relays, a control unit connected to the current switching unit, two cathodes, and two end sensors for detecting the extreme positions of a tool capable of reciprocating horizontal movements and vertical feed. The sensors are connected to the control unit.Two cathodes are configured to alternately connect to the negative pole of a current source for electrochemical dressing of an abrasive conductive tool and engage the tool upon completion of contact with the workpiece, and perform vertical movement synchronously with the vertical feed of the tool. The technical result consists in increasing the efficiency of the electrochemical machining process of a metal product by removing a layer of material from the workpiece as the tool moves in both directions and periodically electrochemically dressing the tool after each pass along the workpiece. 1 fig.

The application relates to the technical field of power control, in particular to a filter and leakage inductance collaborative design method of a single-stage bidirectional high-frequency isolation inverter, which comprises the following steps: obtaining basic design parameters and constructing an inverter modulation model according to a modulation strategy, and solving the model to obtain a modulation signal expression; deducing zero-current switching current constraint conditions and zero-voltage switching current constraint conditions of a switching tube based on the modulation strategy; combining the constraint conditions with the inverter modulation model to solve and obtain soft switching constraint conditions; determining a collaborative value range of an inverter side inductance of a filter and transformer leakage inductance which meets the soft switching requirement according to the soft switching constraint conditions and a value range of the modulation signal expression; selecting design parameters of the inverter side inductance of the filter and the transformer leakage inductance, and determining the rest circuit parameters of the filter according to reactive power demand and grid-connected harmonic standards. The application can effectively inhibit the problems of soft switching failure, increased loss and electromagnetic interference caused by parameter mismatch.

The application relates to the technical field of electric power communication, in particular to an HPLC dual-mode communication method and system based on cloud-edge cooperation, which generates a state vector through real-time collection of physical layer indexes on a terminal side, generates an optimal action according to the state vector and a DDQN model on an edge side, feeds back a communication result and a state vector of a next time slot to the edge side after the terminal side executes the optimal action, and calculates an instant reward and a target Q value of the DDQN model on the edge side, so that a closed-loop decision flow of "state-action-feedback" is formed; the edge side updates parameters of the DDQN model through global model parameters issued by the cloud, realizes a closed loop of "local training-cloud aggregation-global optimization", and thus can still maintain a high communication success rate and a low bit error rate in a strong electromagnetic interference scene such as lightning stroke and large-current switching; and a dual-mode communication solution with high reliability, low time delay and low power consumption is provided for a power internet of things.