4576 results about "Power switching" patented technology

The invention discloses a non-impact grid-connected recovery method, system and device for a coal mine isolated network power supply system and a medium, and belongs to the technical field of non-impact grid-connected recovery of power supply systems, and the method comprises the steps: monitoring the operation state of an isolated network, and obtaining voltage, frequency and phase parameters; preparation before grid connection is executed, and main network parameter confirmation and equipment verification are completed; performing parameter synchronous adjustment based on the controller to complete dynamic matching of voltage, frequency and phase; pre-synchronization control is implemented to realize phase prediction and power pre-balance; executing closing operation and performing impact suppression; carrying out stability regulation and control after grid connection, wherein the stability regulation and control comprise oscillation suppression and smooth load loading; and when grid connection is abnormal or fails, an emergency processing branch is entered, and standby power supply switching or island splitting control is triggered. Through multi-dimensional synchronous control, impedance reconstruction and hierarchical coordination mechanisms, high-precision and low-impact grid connection of multiple energy units under extreme working conditions is realized, and the grid connection stability and success rate of a coal mine isolated network power supply system are remarkably improved.

The present teaching relates to method and system for charging a rechargeable battery deployed in an electric apparatus. The system resides in the electric apparatus. The system comprises a motor, an inverter, an output rectifier, a configurator, and a controller. The motor comprises a stator having a plurality of stator teeth and a plurality of stator windings wounded on the plurality of stator teeth. The inverter comprises a plurality of power switch devices. The configurator comprises a plurality of contactors coupled with the plurality of stator windings and the plurality of power switch devices. The controller controls the plurality of power switch devices and the plurality of contactors, so as to configure the system to operate in one of a traction mode and a charging mode.

The invention discloses a toilet head product defect automatic detection production line, and relates to the technical field of defect optical detection, the toilet head product defect automatic detection production line comprises a production conveying roller, an optical detection chamber is fixedly connected to the upper end face of the production conveying roller, a power switch is fixedly connected to the side wall of the production conveying roller, and a mounting rack is fixedly connected to the upper end face of the optical detection chamber; the two sides of the optical detection chamber can be intermittently and automatically opened in the closestool product conveying process, the two sides are closed after the closestool product is moved into the optical detection chamber, an external light source is prevented from entering the optical detection chamber, interference of external light rays (such as sunlight and workshop lighting light) can be effectively isolated, and the detection efficiency is improved. The light received by the detection equipment only comes from the detection light source, so that the problem of unstable light intensity is avoided, the accuracy and the reliability of a detection result are improved, the condition of light pollution caused by superposition of an external light source and the detection light source is avoided, and the precision of detecting surface flaws of a closestool product by an optical detection room is improved.

A black start system disclosed by the present invention comprises a first black start power supply, a black start power supply switch and a control system, the black start power supply switch supplies energy to the control system after being triggered by the first black start power supply, and the first black start power supply supplies energy through an energy storage battery; the invention discloses a micro-grid which comprises a power generation system and the black-start system, the invention also discloses a black-start method applied to the micro-grid, the black-start power supply triggers the black-start power supply switch and then supplies energy to the control system, and the power generation system is gradually started to the whole micro-grid. According to the invention, the energy storage battery is used as energy for black start, the characteristic that the energy storage battery performs electric quantity early warning to keep the lowest electric quantity and low electric quantity from the power grid for charging is utilized, stable and continuous energy can be provided for black start, and meanwhile, the situation that the energy storage battery is damaged due to the fact that the electric quantity of the energy storage battery is exhausted is avoided.

The invention discloses a power supply switching method, device and equipment, a medium and a program product. The method comprises the following steps: acquiring running state data of a first power supply in real time, and preprocessing the running state data to generate corresponding time sequence data; inputting the time sequence data into a pre-trained LSTM prediction model, the LSTM prediction model being obtained based on sample historical operation data of the power supply and fault sample training, and outputting a fault probability value of the first power supply in a future preset time period; determining whether the first power supply has a fault trend or not according to a relationship between the fault probability value and a preset threshold value; and when the fault trend exists, controlling the first power supply to be disconnected and connecting a second power supply to carry out load power supply switching. According to the scheme, the power supply can be switched to other power supplies before power interruption possibly caused by faults, and the stability and reliability of power supply of related communication equipment are guaranteed.

A digital controller for a switching converter configured to receive an input voltage and to generate an output voltage, the switching converter comprising one or more power switches and an energy storage element, the digital controller comprising a ripple cancellation signal generator configured to generate a ripple cancellation signal, the digital controller being configured to receive a digitized current signal, the digitized current signal being a digital representation of a current flow through the energy storage element, generate a filtered digital current error signal using the digitized current signal and the ripple cancellation signal, the ripple cancellation signal being arranged to reduce ripple from the digitized current signal in the generation of the filtered digital current error signal, and control the switching converter, the control of the switching converter being dependent on the filtered digital current error signal, wherein the ripple cancellation signal, within each signal period, comprises a rising slope comprising a first non-linear portion, and / or a falling slope comprising a second non-linear portion.

A communication system includes a first controller and a second controller connected to each other. The first controller receives electric power from a power source through a power switch. The second controller includes a current detection unit, the management frame obtaining unit, the disconnection determination unit, and the power supply disconnection unit. The current detection unit detects a consumed current value of the first controller. The management frame obtaining unit obtains a management frame including activation information of the first controller. The disconnection determination unit determines, based on the consumed current value and the activation information, whether a predetermined disconnection condition is met. The power supply disconnection unit switches the power switch to a disconnected state when the disconnection determination unit determines that the disconnection condition is met.

The invention discloses a power supply system and a fault detection method and device thereof, a medium and a program product, and relates to the technical field of server power supply. The power supply system comprises a control module and N first controllable switches connected with N paths of power supplies in a one-to-one correspondence manner; n groups of power supplies, namely N paths of power supplies connected to the first controllable switch, are used for supplying power to the control module, when one power supply is abnormal, the control module can actively adjust and switch to the other path of power supply, and meanwhile, when the currently used power supply is abnormal, the power supply is switched to the other path of power supply. The control module can keep normal work through fly-wheel diodes of controllable switches corresponding to other paths of power supplies, so that the operation of power supply switching is realized; no matter which power supply is abnormal, the control module can effectively detect the abnormal condition, so that the control module can comprehensively detect all power supplies in the power supply system of the server, and the safety and the reliability of the whole server system are improved.

The present disclosure provides a digital low-dropout regulator (DLDO) and an electronic device using the same. The DLDO includes a voltage comparator circuit, a switch control circuit, a power switch module, and an asynchronous clock generation circuit. The voltage comparator circuit compares a reference voltage with the output voltage to output a comparison result signal. The switch control circuit generates a switch control signal based on the comparison result signal. The power switch module is controlled by the switch control signal to switch between the on state and the off state, thereby adjusting the output voltage. The asynchronous clock generation circuit generates a reference clock signal that is asynchronous with the system clock signal used in the load circuit and has a higher clock frequency. This allows the switch control circuit to update the switch control signal based on the reference clock signal.

The invention relates to the technical field of forklifts, in particular to a wheel edge driving system driven by a hydraulic motor and a forklift. The wheel edge driving system driven by the hydraulic motor comprises a clutch assembly, an input connecting shaft and a speed reduction adjusting assembly. Efficient power transmission can be achieved, large torque can be effectively borne, rapid power switching and control can be achieved, the requirements under different working conditions are met, the controllability and flexibility of a vehicle are improved, in addition, the flow rate of cooling lubricating oil in the rotating output hole, the hollow conical cavity, the speed reduction cavity and the clutch control cavity can be increased, and the service life of the vehicle is prolonged. Therefore, the cooling efficiency is improved, the cooling liquid can be evenly distributed in the equipment, the local overheating phenomenon is avoided, effective heat dissipation is achieved, performance reduction or faults caused by too high temperature in long-time operation of the equipment are prevented, and the reliability of the equipment is improved.

A power switching device is disclosed. The power switching device includes a cascode switching circuit comprising a normally-on transistor and a normally-off transistor provided in a cascode topology. The power switching device also includes a gate driver circuit configured to apply a positive bias voltage at a respective gate terminal of the normally-on transistor under a normal operating condition, and to apply a negative bias voltage at the respective gate terminal of the normally-on transistor under a short circuit condition.

The invention relates to the technical field of emergency communication, in particular to a Beidou short message-based multi-mode emergency communication terminal, which comprises a Beidou communication module, a multi-source positioning unit, an information coding processor and a main control unit, the Beidou communication module is used for realizing short message communication with a Beidou satellite and supporting a BDS-3 protocol; the physical SOS button is provided with a mistaken touch prevention structure and comprises a mechanical pressing assembly with a triggering pressure threshold value larger than 2N and continuous pressing time verification logic; the multi-source positioning unit is used for acquiring position information including longitude, latitude and height; the information coding processor is configured to compress the collected help-seeking information to be within the capacity limit of a Beidou short message and generate a standard message of an emergency communication protocol; a standby power supply switching circuit is arranged in the main control unit, the main control unit is used for coordinating the work of each module and managing a power supply system, and the power supply system comprises a replaceable lithium thionyl chloride battery and a solar charging panel; and the low-power-consumption main control unit controls the Beidou communication module to transmit information to a Beidou communication satellite.

The utility model provides a multifunctional shaver capable of automatically recognizing the type of a tool bit through pressing. The multifunctional shaver comprises a main machine handle, a driving motor, the tool bit, a power source, a power switch, a microswitch, a pressing rib and a circuit board structure. Wherein the microswitch is arranged on the positioning installation part, and the pressing rib is arranged on the tool bit. When the tool bit is used, tool bits with different functions are selected to be installed on the positioning installation part according to requirements of a user, the pressing rib presses the microswitch to recognize the type of the installed tool bit, then a circuit with the voltage matched with the recognized type of the tool bit on the circuit board structure is switched on, and the power switch controls a power source to switch on the tool bit through the switched-on circuit. And voltage matched with the type of the tool bit is provided for the driving motor to drive the tool bit to work. According to the multifunctional shaver, the type of the shaver head can be simply and rapidly recognized only by pressing the micro switch through the pressing rib, and a circuit with adaptive voltage is distributed to the driving motor through the circuit board structure so as to drive the shaver head to work normally.

The invention discloses a positioning and clamping device for automobile part machining, and relates to the technical field of clamping equipment.The positioning and clamping device comprises clamping mechanisms, the clamping mechanisms are distributed and installed on a positioning disc, multiple sets of centering clamping grooves are annularly distributed in the positioning disc, two sets of parallel clamping grooves are further formed in the positioning disc in a penetrating mode, and each clamping mechanism comprises a rotating screw rod; the rotating screw is connected with the driving assembly, a first matching block and a second matching block are arranged at the two ends of the rotating screw respectively, a threaded sleeve is installed on the rotating screw in a meshed mode, a lifting frame is arranged on the threaded sleeve, and a telescopic air cylinder and a clamping assembly are installed on the lifting frame. The rotating screw is controlled to rotate through the telescopic rotating motor and the lifting frame, so that a centering clamping mode and a parallel clamping mode are switched, rapid power switching before and after clamping mode switching is achieved in combination with the power switching mechanism, power system arrangement is optimized, and clamping and positioning of parts of different shapes and different sizes are achieved.

The utility model discloses a zero interruption dual power supply fast switching device, comprising a dual power supply switch, a power electronic assembly, an output switch QF and a load which are connected in sequence, the power electronic assembly comprises an electronic bypass unit VT, a mechanical bypass contactor KM, an isolation transformer TM, a bidirectional converter CU and a super capacitor energy storage unit CAP, a contact S1 in the dual-power switch is connected with a main power supply, a contact S2 is connected with a standby power supply, a mechanical bypass contactor KM is connected with an electronic bypass unit VT in parallel, an isolation transformer TM is connected to the output end of the electronic bypass unit VT, and the two ends of a bidirectional converter CU are connected with the isolation transformer TM and a super capacitor energy storage unit CAP respectively. According to the device, the dual-power-supply change-over switch is matched with the power electronic component, so that rapid switching of the dual-power-supply switch is realized, the problem of power supply interruption in the switching process is solved, and the reliability of power supply is improved; and meanwhile, few energy storage elements are used, and the cost is low.

The invention relates to the field of server systems, and discloses a server cabinet system, which comprises a real-time power monitoring module used for collecting server current data at a frequency of once per second, calculating real-time power and dynamically adjusting power distribution; the intelligent prediction and optimization module is used for predicting future demands and generating an optimal distribution strategy based on the normalized historical power consumption data and load data; and the redundant power supply switching module comprises a main power supply and a standby power supply converted by the lithium battery pack through an inverter, and is used for switching to the standby power supply when the voltage of the main power supply is lower than 180V for 10ms. According to the method, the elastic power supply strategy is generated by fusing the prediction demand and the two-dimensional weight of the service priority, the continuous operation of the core service is ensured, the prior art depends on a single priority label to allocate resources, the burst load and the long-term stability are difficult to balance, and the problem of resource waste caused by separation of the two is solved.

A method includes forming a first device die and a second device die. The first device die includes a first integrated circuit, and a first bond pad at a first surface of the first device die. The first integrated circuit is electrically connected to the first bond pad. The second device die includes a power switch that includes a first source / drain region, a second source / drain region, a second bond pad electrically connecting to the first source / drain region, and a third bond pad electrically connecting to the second source / drain region. The method further includes bonding the first device die with the second device die to form a package, with the first bond pad bonding to the third bond pad, and bonding the package to a package component.

The utility model discloses a portable positioning beacon device, and relates to the technical field of positioning beacons. The device comprises a Bluetooth module, a Beidou positioning module, a Beidou antenna, a LoRa module, a LoRa antenna, an SOS button, an LED indicating lamp, a buzzer, an on-off button, an on-off control circuit, a power switching circuit, a lithium battery charging circuit, a charging and discharging protection circuit, a linear power switching circuit, a first buck-boost circuit, a second buck-boost circuit, a solar cell panel and a charging interface. A temperature detection circuit, an electric quantity detection circuit and a lithium battery. The equipment is simple in circuit structure, is easy to realize light weight, has a long-distance communication capability, is lower in power consumption, has a charging function, and can meet the requirements of personnel position information sharing and communication in field operation and exploration processes.

The invention discloses a hydrogen fuel cell ship power switching system, which relates to the technical field of hydrogen fuel cell ship hybrid power, and comprises a topological optimization module for optimizing a series-parallel topological structure of a fuel cell stack through a quantum annealing algorithm based on a multi-modal data set, the reconfigurable bipolar plate magnetic control switch is triggered to execute millisecond topology switching, and a topology state coding signal is synchronously generated; and the compensation module is used for inputting the topological state coding signal into the LSTM model, predicting a fault risk value, correcting the time step length of a leakage diffusion equation according to the real-time switching frequency of a magnetic control switch, and calculating a ship inclination angle correction term according to the corrected time step length. According to the invention, through an accurate fault prediction and compensation mechanism, operation interruption and maintenance cost caused by unpredictable faults are greatly reduced.

A semiconductor die includes an on-die power switch and a target device. The on-die power switch includes a plurality of power input nodes, a power output node, and a switch circuit. The power input nodes receive a plurality of operation voltages from a plurality of different power sources, respectively. The power output node outputs a target operation voltage selected from the operation voltages. The switch circuit selectively couples one of the power input nodes to the power output node. The target device operates according to the target operation voltage supplied from the on-die power switch. The on-die power switch and the target device are separate circuit blocks of the semiconductor die.

An isolated bi-directional DC conversion circuit and a method for controlling the same are provided. The DC conversion circuit includes a transformer with a first energy storage element and a primary-side rectification bridge coupled to the primary side of the transformer and a second energy storage element and a secondary-side rectification bridge coupled to the secondary side of the transformer. The primary-side rectification bridge consists of multiple first power switching devices. The secondary-side rectification bridge consists of multiple second power switching devices. Each of the multiple first and the second power switching devices have a body diode in inverse parallel connection therewith. The DC conversion circuit further includes multiple first sampling resistors provided on each bridge arm of the secondary-side rectification bridge and a controller configured to perform switch control on the multiple second power switching devices based on a sampled voltage of the multiple first sampling resistors.

The invention provides a communication master control system based on intelligent power supply, and relates to the technical field of communication, and the system comprises a power supply monitoring module which is used for monitoring the commercial power supply state of a communication base station, and automatically controlling a power switching circuit to switch a power supply mode to a standby battery power supply mode when the commercial power interruption is detected; the state acquisition module is used for acquiring the charge state, the discharge efficiency and the health state data of the standby battery in real time in a standby battery power supply mode, and acquiring the residual capacity, the actual discharge capacity and the life index of the battery; and the load receiving module is used for uploading the residual capacity, the actual discharge capacity and the life index of the battery to the communication main control unit, and receiving load data in the current communication network at the same time. According to the invention, intelligent scheduling of power utilization is realized, and the power supply reliability and stability of the communication system are improved.

The invention discloses a charging pile power supply switching method and equipment based on a micro-grid, and relates to the technical field of electric vehicle charging, and the method comprises the steps: determining a target user according to a preset price threshold value and a region requirement based on the vehicle information of each vehicle in a target charging station before power supply switching; according to the energy storage state parameter and the power supply quality parameter of the current power supply of the target charging station, judging whether the charging demand of the target user is met; if yes, generating and executing a power supply switching strategy based on a power supply in the energy storage system and the first power supply switching rule; and if the power supply does not meet the preset high-quality power supply switching threshold, determining a standby power supply and a charging power supply, and after the charging power supply supplements energy storage to the standby power supply to a safety threshold, executing switching operation according to a preset switching sequence and an energy storage allocation result. By implementing the application, accurate switching and dynamic adaptation of the power supply can be realized, the problems of blind switching of the power supply and mismatching of the power supply capability and the high demand of the user in the prior art are solved while the resource utilization efficiency is improved, and finally the stability and reliability of switching of the power supply of the charging pile in the micro-grid environment are realized.

Systems and methods for providing an adaptive nut removal mode in a power tool. The power tool includes a housing and a motor. The motor includes a rotor and a stator. The stator includes a plurality of stator windings. A power switching circuit is configured to provide a supply of power from a power source to the motor. An electronic controller is configured to control the power tool to remove a fastener from a joint. The electronic controller is configured to monitor a torque of the motor, determine whether the torque of the motor is equal to or less than a threshold torque value, operate, when the torque is greater than the threshold torque value, the motor in an loosening mode while the torque of the motor decreases, and increase, when the torque is equal to or less than the threshold torque value, a speed of the motor.

The invention relates to the technical field of artificial intelligence, and discloses a charging pile operation state management method and system based on artificial intelligence, and the method comprises the steps: constructing a dual-input single-output DC-DC conversion control circuit structure based on an input power supply, a main power switching device, a three-winding coupling inductor and a switched capacitor unit; calculating a switch time sequence control signal based on a double-input single-output DC-DC conversion control circuit structure; detecting the running state of the charging pile to obtain a multi-dimensional quantized data set, and performing data coding to obtain a standard data information sequence; performing multi-dimensional feature value extraction and fault position identification on the standard data information sequence to obtain a fault positioning result; according to the fault positioning result and the switch time sequence control signal, closed-loop regulation control is carried out on the power device conduction time sequence and the clamping circuit parameters, stable direct-current output voltage is obtained, the voltage conversion efficiency is improved, the accuracy of fault recognition is improved, and the misjudgment rate is reduced.

A station keeping waterfowl system includes at least one self propelled station keeping waterfowl decoy and a homing buoy each having water resistant housings, with at least a portion of the decoy housing having a form of a waterfowl. The decoy and buoy each include batteries, microprocessors, and power switches. The decoy includes a motor driven propeller, a motor driven rudder, and a receiving array of antennae for radio direction finding and radio ranging to the buoy. The receiving array is a T-array of antennae comprising a first transverse linear array and a second longitudinal linear array. The homing buoy emits a homing signal and the one or more waterfowl decoys autonomously navigate to remain within a predetermined radius around the buoy. The system includes a simple handheld controller which preferably comprises no more than two switches or buttons.

One purpose of the present invention is to provide a combination device that contributes to the miniaturization of vehicle air conditioning systems and the like, and that can ensure the cooling capacity (heat dissipation) of a switching element that converts direct current to alternating current. The combination device (1) with a refrigerant compression function and a heating medium function comprises: a first housing (2A) that accommodates a compression mechanism (3) for compressing a refrigerant and an electric motor (4) for driving the compression mechanism (3) in series; a second housing (2B) that accommodates the electric heater (5) for heating a heating medium; and a third housing (2C) that accommodates the motor drive circuit (20) and the heater control circuit (30).The first power switching elements (Q1 to Q6) of the motor drive circuit (20) are arranged in the third housing (2C) such that they can be cooled by a refrigerant flowing from the refrigerant inlet (8) into the first housing (2A) and by a heating medium flowing from the heating medium inlet (10) into the second housing (2B).

An electrical system includes a battery, temperature sensor, and battery charging station connectable to the battery and to an alternating current (AC) power supply. The charging station includes connected battery charging and heating circuits. The charging circuit includes a first plurality of power switches configured to rectify an AC input voltage from the power supply into a direct current (DC) voltage for charging the battery during a battery charging mode. The heating circuit includes a voltage bus, transformer, series switch, and a second plurality of power switches downstream of the transformer. The heating circuit generates an AC battery current from the DC voltage and injects the same into the battery during a battery heating mode. An electronic controller controls the power switches and the series switch to perform the charging and heating modes, doing so via a corresponding method.

The invention provides a direct-current group charging control system and a power switching method thereof, and relates to the technical field of electric vehicle charging, and the control system comprises a data interaction controller, a charging module group, a switch module group, a plurality of charging terminals, a direct-current loop module and a direct-current loop controller. According to the method, a data interaction controller controls a switch module group to realize'full matrix 'type dynamic connection between any charging module and any charging terminal according to the real-time requirement of each terminal, and an idle terminal is electrically isolated by combining a direct current loop module; and power switching is carried out by adopting safety strategies such as double-threshold hysteresis control, voltage pre-synchronization and zero-current breaking. According to the invention, the problems of inflexible power scheduling and insufficient idle terminal safety of the existing group charging system are solved, safe, efficient, stable and dynamic distribution of the charging power in a global range is realized, and the utilization rate and the operation safety of the system are improved.

The invention discloses a differential noise traction system and a differential signal noise parameter measurement method and device, and belongs to the field of chip measurement. The system is characterized in that a vector network analyzer comprises four ports, the input ends of two impedance tuners are respectively connected to a differential output port pair of the vector network analyzer, the output ends of the two impedance tuners are respectively connected to the differential input end of a tested device, the differential output end of the tested device is connected to the receiving end of a noise receiver, and the noise receiver is connected to the output end of the noise receiver. The output end of the noise receiver is respectively connected to a differential receiving port pair of the vector network analyzer; the direct-current power supply is used for supplying power to the tested device and the switch controller, and the switch controller is used for controlling an internal switch of the noise receiver; the differential output port pair generates a differential signal; the differential receiving port pair is used for receiving noise power of a differential signal; and the impedance tuner is used for adjusting the impedance point, so that the differential signals input to the tested device correspond to different differential impedances. The method can improve the measurement precision.