60 results about "Power extraction" patented technology

The invention relates to the technical field of agricultural machinery load control, in particular to a corn harvester operation load control system and method, and the system comprises a power extraction module, a speed regulation and control module, a trend analysis module, a parameter optimization module and a load closed-loop module. According to the method, frequency characteristics are extracted in a periodic and segmented mode through header power signals, load dynamic sensing is carried out, advancing speed adjustment is more real-time and prospective, response sensitivity and stability are improved in combination with PID control, equipment stably operates at multiple crop densities and plots, the torque increment of a main shaft is monitored in real time, and wavelet transformation multi-scale analysis is carried out; load fluctuation fine-grained identification is carried out, a roller gap and power output are dynamically adjusted to optimize parameters with a minimum mean square error, frequency and torque characteristic closed-loop comparison is constructed, control self-matching and continuous self-adjustment are carried out, error minimization and trend tracking feedback are fused, the intelligence of the harvester is enhanced, and load sudden change performance fluctuation and energy consumption loss are reduced.

A free-space power receiver includes layouts of photovoltaic cells selected to optimize power extraction even when a power beam moves or changes profile on the receiver. The receiver may also include a circuit board, which may include suitable wiring for connecting the photovoltaic cells to one another and to a load for extraction of power. The receiver may include capacitors wired in parallel with the photovoltaic cells.

This utility model discloses a circuit breaker, belonging to the field of low-voltage electrical technology. The circuit breaker includes a contact structure and a leakage current test circuit. The contact structure includes a first moving contact and a conductive rod electrically connected to the first moving contact. The leakage current test circuit includes a test resistor and a spring contact. The test resistor has a first lead, and the first lead and the end of the conductive rod facing the spring contact are both abutted against and electrically connected to the first surface of the spring contact. The circuit breaker provided by this utility model adopts a lap-connection power extraction method to electrically connect the test resistor and the first moving contact, so as to realize the leakage current test circuit extracting power from the first end of the test resistor, effectively reducing the use of wires, that is, reducing the number of wire connection points and soldering points, reducing the risk of short circuit and leakage current test circuit failure, facilitating assembly, and effectively reducing manufacturing costs.

To provide a work vehicle with a simplified structure for power transmission to a hydraulic pump. [Solution] The work vehicle 10 comprises a body 11 having a power source, a hydraulic pump 16, and a gear case 83. The hydraulic pump 16 is driven by the power of the power source and discharges hydraulic fluid. The gear case 83 houses a power extraction mechanism that transmits the power of the power source to the hydraulic pump 16. The hydraulic pump 16 has a first pump 81 and a second pump 82 which are arranged on both sides of the gear case 83 so as to sandwich the gear case 83.

This invention relates to a transformer core discharge detection device, comprising a base; a clamping assembly mounted on the base for detachably clamping and fixing the part to be detected to the transformer core; a power extraction component disposed on the clamping assembly for extracting an electrical signal from the part to be detected; a first discharge electrode electrically connected to the power extraction component; a second discharge electrode disposed opposite to the first discharge electrode, forming a detection gap between them; a recording medium disposed between the first and second discharge electrodes to leave a trace when an abnormal discharge occurs; a discharge detection unit electrically connected to the second discharge electrode to detect abnormal discharge and output a trigger signal; a conveying mechanism driving the recording medium to move; the conveying mechanism electrically connected to the discharge detection unit, responding to the trigger signal and driving the recording medium forward a predetermined distance. This invention has a simple structure, is easy to install, and can intuitively record abnormal discharge events.

To provide a track board that allows for a wide range of movement of the moving parts around a stationary toy vehicle. [Solution] A power extraction toy comprising a stopper for locking and stopping a vehicle toy having a pair of driving wheels, and a rotating body for extracting power from the pair of driving wheels of the vehicle toy stopped by the stopper, wherein the power extraction device comprises two of the rotating bodies configured to rotate independently of each other and for extracting power individually from each of the pair of driving wheels. Furthermore, a track board characterized by comprising the power extraction device.

A method is presented for determining a setpoint signal of a wind energy conversion system. The method includes: providing a first input signal, comprising system frequency values of an electric power system, and a second input signal comprising an angular speed value of a wind energy conversion system; determining, from the first input signal, an intermediate signal comprising system frequency deviation values, the system frequency deviation values indicating deviations between the system frequency values and a target frequency value; determining, from the intermediate signal and the first input signal, a power correction signal comprising a first power value; determining, from the second input signal, a first reference signal comprising a second power value corresponding to a point of maximum power extraction of the wind energy conversion system; and determining a setpoint signal for setting an output power value of the wind energy conversion system.

The present application provides a power supply rail and a rail system. The power supply rail comprises: a carrier, comprising a first side and a second side arranged opposite to each other in a thickness direction of the carrier; and a plurality of profiles, disposed on the second side and extending in a direction away from the first side. When viewed in a cross-section along a longitudinal direction of the carrier, the profiles have, in the direction of extension of the profiles, at least two electrical contact regions at different heights. In the present application, at least two electrical contact regions having different heights are arranged such that the power supply rail can effectively distribute an electric field when a connected device is in contact with the power supply rail. Compared with conventional designs employing a single-height electrical contact region, such an uneven height arrangement helps to reduce local electric field intensity and avoid electric field concentration, thereby significantly reducing the risk of insulation breakdown. In addition, this uneven height arrangement provides more options for power extraction by the rail system.

The invention provides a work vehicle which can easily simplify a structure for transmitting power to a hydraulic pump. A work vehicle (10) is provided with: a machine body (11) having a power source; a hydraulic pump (16); and a gearbox (83). The hydraulic pump (16) is driven by the power of a power source and discharges hydraulic oil. The gearbox (83) accommodates a power extraction mechanism that transmits power of a power source to the hydraulic pump (16). The hydraulic pump (16) has a first pump (81) and a second pump (82) disposed on both sides of the gearbox (83) so as to sandwich the gearbox (83).

The power transmitter (101) wirelessly provides power to the power receiver (105) via the power transfer signal. During the power transfer, the driver (201) generates a power transfer signal to employ a repeating time frame comprising a power transfer time interval and a communication time interval in which the power transfer signal is turned off. The communication driver (209) generates a communication drive signal for the communication coil (207) to generate a communication carrier signal. Communication between a power transmitter and a power receiver is achieved by modulating a communication carrier signal during a communication time interval. A determiner (211) determines a power extraction indication indicating a power extraction characteristic for extracting power from the communication carrier signal by the power receiver during at least a portion of the communication time interval, and a level controller (213) controls a level of the communication drive signal during the communication time interval in accordance with the power extraction indication.

A hybrid electric gas turbine engine two speed transmission for a low spool drive including an accessory gearbox in operative communication with a low speed spool motor-generator; a transmission in operative communication with the accessory gearbox and the low speed spool motor-generator; a low speed spool angled gearbox in operative communication with the transmission; and a low speed spool in operative communication with the low speed spool angled gearbox.

This utility model relates to the field of sockets, and particularly to a track socket, comprising a power supply mechanism and a power extraction mechanism. The power supply mechanism includes a power-carrying body and a conductive component. The power-carrying body has a power-carrying cavity and an opening communicating with the power-carrying cavity. The conductive component is disposed within the power-carrying cavity. The conductive component includes a conductive element and an elastic component, the conductive element being elastically connected to the power-carrying body through the elastic component. The power extraction mechanism includes a base and a power extraction element, the base and the power extraction element being movably connected. The power extraction element is inserted into the power-carrying cavity through the opening. By driving the power extraction element, the power extraction element and the conductive element are made to contact or separate, thereby realizing the connection or disconnection of power. This utility model features a simple and reliable structure with good contact.

The present invention relates to a radio frequency device (2) configured to perform at least one radio frequency function, and the radio frequency device includes a metal structure (4) defining an internal volume, at least one power injection member (16) at an inlet of the metal structure (4) and at least one power extraction member (18) at an outlet of the metal structure (4), the at least one power injection member and the at least one power extraction member being arranged such that electromagnetic waves can propagate from the power injection member (16) toward the power extraction member (18), and at least a portion of the internal volume defined by the metal structure (4) is filled with a solid dielectric foam (24) with a relative permittivity of less than 1.5.

This utility model discloses a self-powered remote-transmission surge arrester monitor and surge arrester with local pointer display. The monitor includes an ammeter, one end of which is connected to the first end of the power extraction system, and the other end of which is connected to the first end of the filtering and current-limiting protection circuit. A voltage limiting protection circuit is also connected to the first end of the power extraction system connected to the ammeter. A communication module is connected to the second end of the power extraction system, and a DAC driver is connected to the third end. This surge arrester monitor achieves consistency between the mechanical ammeter reading and the remote-transmission reading while simultaneously measuring the leakage current through digital isolation and transmitting the data remotely. This solves the problem that existing methods combining mechanical and digital measurements often result in maintenance personnel being unable to determine which reading is more accurate.

A power extraction circuit for Radio Frequency Identification (RFID) tags and power extraction method thereof is a circuit and method for maximizing the efficiency of power harvesting in RFID tags. The power extraction circuit comprises an impedance matching network, a rectifier, and a tuning circuit. The tuning circuit comprises a power-on-reset (POR) circuit, a voltage regulator, two voltage-controlled switches, two voltage-to-time converters, a clock generator, a counter, and a control circuit.

The invention relates to a control method and device of a flexible direct current power transmission system for new energy access. The method comprises the following steps: acquiring a real-time load rate of a voltage source converter; obtaining a power updating adaptive sliding step length; acquiring real-time environment parameters of the new energy access area; obtaining a power extraction adaptive time window; acquiring real-time active power of a new energy power generation end; obtaining an output fluctuation intensity value of the new energy power generation end; comparing the output fluctuation intensity value of the new energy power generation end with a preset output fluctuation intensity threshold value to obtain an output fluctuation intensity value comparison result; according to the output fluctuation intensity value comparison result, adjusting the sampling mode of the new energy power generation end to obtain an adjusted sampling mode; and according to the adjusted sampling mode, the operation state of the voltage source converter is controlled, and the operation stability of the flexible DC power transmission system is improved.

This invention discloses a lever-type mechanical rectification wave energy capture device, comprising: a power extraction device, a lever support frame, a lever assembly, and a buoy assembly; one end of the lever assembly is connected to the buoy assembly, and the other end is connected to the power extraction device; the lever assembly uses the roller of the lever support frame as a fulcrum to transmit the motion of the buoy assembly in a direction perpendicular to the sea surface to the power extraction device; the power extraction device rectifies the reciprocating linear mechanical motion into unidirectional rotational motion, realizing the rotational power generation of the generator in the power extraction device. This invention has a compact structure and ingenious design, and can be used to capture the mechanical energy of ocean waves and convert mechanical energy into electrical energy, reducing manufacturing and maintenance costs.

This invention belongs to the field of power distribution engineering monitoring technology, specifically a remote monitoring device and its usage method for power distribution engineering. It includes a mounting plate with mounting components on its side wall for reliable device fixation. An adjustment mechanism is installed on the other side wall of the mounting plate. A power supply module is mounted on the top of the mounting plate. A multi-dimensional monitoring mechanism is installed on one side of the adjustment mechanism. The power supply combines solar power from the power supply module with conventional power extraction, forming a hybrid power supply that effectively solves power outage problems under low load and severe weather conditions. The adjustment mechanism allows for adjustment of the working angle of the multi-dimensional monitoring mechanism during installation and commissioning, and also acts as a collision buffer and shock absorber. The multi-dimensional monitoring mechanism can collect data from all directions and transmit it to a remote monitoring center. Furthermore, a bird-repelling mechanism can drive away birds when a potential hazard is encountered.

This invention relates to the field of power equipment monitoring technology, specifically to a surge arrester monitoring system based on rectifier array energy harvesting and dynamic power management. The system includes an energy harvesting module comprising a rectifier array and an energy conversion unit. The input terminal of the rectifier array is connected to the surge arrester grounding circuit. The energy conversion unit is used to regulate the DC signal and output a DC voltage. An energy storage and management unit has its input terminal connected to the output terminal of the energy conversion unit. A signal acquisition unit has its input terminal connected to the surge arrester valve plate. A lightning strike counting branch is included. A communication module is used to wirelessly upload monitoring and evaluation data. An MCU is connected to the energy conversion unit, energy storage and management unit, signal acquisition unit, lightning strike counting branch, and communication module. This invention solves the problem of energy imbalance in the system, thereby ensuring absolute self-powering and long-term stable maintenance-free operation of the surge arrester online monitoring device throughout its entire lifecycle.

The application belongs to the technical field of aero-engines, and particularly relates to a low-power extraction jet precooling control system. The jet precooling water supply adopts an anti-icing control accessory and an anti-freezing electromagnetic valve. Air is introduced to externally blow the accessories of the jet precooling control device by using the anti-icing control accessory, so as to prevent surface icing. After the jet precooling stops working, the anti-freezing control accessory is used to introduce air to the three-zone outlet of the jet precooling control device to the jet precooling nozzle. Before entering a low-temperature environment, water stored in the pipeline is blown away in advance, so as to prevent the water from freezing. Not only is the freezing risk in the flight process reduced, but also the requirement for the storage and maintenance of the unit after landing on the ground is simplified, the use range of the domestic jet precooling assembly unit is expanded, and the plane can still fly safely and highly maneuverably under the conditions of extreme cold and extreme north.

The utility model relates to the technical field of power supply of power system monitoring equipment, in particular to a high-efficiency induction power taking device. The system comprises an energy capture module, a rectification filtering module, an intelligent voltage stabilization module and an energy storage switching module. An alternating magnetic field around a high-voltage power transmission line is coupled to the winding through the energy capture module and is converted into alternating current through electromagnetic induction, the rectifying and filtering module converts the alternating current into direct current through a rectifying and filtering circuit, and the intelligent voltage stabilizing module converts unstable direct current into stable voltage output through a DC-DC voltage stabilizing circuit. The output voltage is dynamically adjusted according to the fluctuation range of the direct current, the energy storage switching module stores redundant electric energy to the lithium battery pack when the line current is sufficient, and the lithium battery pack seamlessly switches power supply through the diode isolation circuit when the line current is insufficient, so that the output voltage is dynamically adjusted according to the fluctuation of the line current. And the efficiency and the stability of the induction power taking device are improved.

This invention relates to a flux-modulated electric generator that utilizes a rotating Reluctance Modulation Cylinder (RMC) to dynamically modulate magnetic reluctance between a Magnetic Field Source (MFS) and a Power Extractor Assembly (PEA) by changing the reluctance of medium between PEA and MFS by sinusoidally. The RMC is constructed from chirped laminated ferromagnetic material on a non-magnetic conductive base and is driven by a small mechanical motor. As the RMC rotates, its varying thickness modulates the magnetic reluctance sinusoidally, creating a time-varying magnetic flux in the PEA. The PEA, composed of multiple electromagnets, captures this modulated flux and converts it into electrical energy through Faraday's Law of Induction. The MFS, which consists of permanent magnets or superconducting magnets, provides a stable and high-intensity magnetic field for flux modulation. The system is highly efficient due to the lightweight nature of the RMC, which significantly reduces mechanical power requirements compared to traditional generators with heavy rotating rotors. The generator also allows for individual load extraction through its series-connected electromagnets, making it adaptable to various power applications. This novel design offers enhanced efficiency, reduced mechanical wear, and versatility in power generation for both small and large-scale applications.

This utility model relates to the field of busbar power extraction technology, specifically to a quick clamping device for busbar power extraction. It includes a fixed conductive rod, a movable conductive rod, a clamping mechanism, a sliding spring, and a cable quick connector. A connecting rod fixing seat is mounted on the top of the fixed conductive rod. The movable conductive rod is sleeved within the fixed conductive rod and moves axially, with a sliding connecting rod vertically connected to its top. The clamping mechanism includes two symmetrical clamping units and two connecting rods. Each unit includes two parallel clamping connecting rods and a busbar clamping block. One end of the clamping connecting rod is hinged to the connecting rod fixing seat on the same side, and the other end is hinged to the busbar clamping block. One end of the connecting rod is hinged to the end of the sliding connecting rod, and the other end is hinged to the body of the clamping connecting rod on the same side, forming a parallelogram mechanism to constrain the vertical movement of the busbar clamping block. The sliding spring is located inside the movable conductive rod, with both ends abutting against the inner wall of the movable conductive rod and the bottom surface of the sliding connecting rod. This utility model solves the technical problem of busbar power extraction in small spaces through miniaturized design and adaptive structure.

The invention discloses a lightning protection device backup protection device which is arranged in a lightning protection device loop in series and comprises a tripping mechanism and an anti-misoperation control circuit. The tripping mechanism comprises an electromagnetic coil used for driving tripping action, and the maloperation prevention control circuit comprises an induction electricity taking unit, a signal processing unit and a bypass switch unit. The induction power taking unit is configured to obtain lightning current energy flowing through the main loop through electromagnetic induction, and the signal processing unit converts induction energy into driving voltage to drive the bypass switch unit to be closed. And the output end of the bypass switch unit is connected in parallel with the electromagnetic coil branch, and bypasses and shunts the current flowing through the electromagnetic coil during the lightning current impact and the internal resistance recovery period of the lightning protection device. The power frequency follow current in the recovery period is accurately shielded in the time dimension by utilizing the self-adaptability of inductive power taking and the RC energy storage delay circuit, the problem of false tripping of the backup protector caused by lightning stroke follow current is effectively solved, and meanwhile, the quick-break response capability to power frequency faults is ensured.

This invention relates to a novel low-voltage straight busbar type clamp-type drain clamp, comprising: a quick-connect connector, a conductive tube, a voltage-conducting head, clamping teeth, a horizontal clamping plate, and a vertical clamping plate. The quick-connect connector is electrically connected to the conductive tube; the end of the conductive tube is threadedly connected to the voltage-conducting head, and the conductive tube and the voltage-conducting head are electrically connected; the clamping teeth are fixed to the end of the voltage-conducting head; the horizontal clamping plate is provided with a horizontal clamping element; the horizontal clamping element can move perpendicularly relative to the axis of the conductive tube; the end of the horizontal clamping element is provided with a No. I baffle parallel to the clamping teeth; the vertical clamping plate is provided with a vertical clamping element; the vertical clamping element can move parallel to the axis of the conductive tube; the end of the vertical clamping element is provided with a No. II baffle parallel to the clamping teeth; this drain clamp can adapt well to small-pitch busbars, ensuring simple and easy power extraction operation.

This invention provides a method and system for extracting front-end power from a high-bypass turbofan engine, including a low-pressure rotor front-end power extraction subsystem and a support structure. The support structure includes a coaxial outer casing and an inner casing. The outer casing is connected to a fan casing. The front end of the inner casing is connected to the outer casing via a load-bearing support plate. The rear end of the inner casing overlaps with the low-pressure rotor blade disk, and the generator is assembled in the inner cavity of the front end of the inner casing. The method includes a front-end power extraction method design step and a front-end power extraction system design step. The front-end power extraction method design step includes: the extraction and allocation of high-pressure rotor front-end power and low-pressure rotor front-end power. The method and system designed in this invention extract low-pressure rotor power through a front-end power extraction method, ensuring the power demand of the aero-engine while guaranteeing compressor margin, filling a gap in the industry and having significant guiding significance.

This application relates to a single-phase power extraction circuit and its control method in a three-phase power supply. The single-phase power extraction circuit in the three-phase power supply includes a first power extraction interface, a second power extraction interface, a third power extraction interface, and a processor. One end of the first power extraction interface is connected to phase A of the three-phase power supply, and the other end of the first power extraction interface is connected to a first neutral point of the three-phase power supply. One end of the second power extraction interface is connected to phase B of the three-phase power supply, and the other end of the second power extraction interface is connected to a second neutral point of the three-phase power supply. One end of the third power extraction interface is connected to phase C of the three-phase power supply, and the other end of the third power extraction interface is connected to a third neutral point of the three-phase power supply. The processor can select the power extraction interface connected to the load according to the load power. The entire power extraction circuit can achieve single-phase power extraction without adding external circuits such as a neutral wire.

This application relates to the field of power control technology for photovoltaic (PV) and energy storage (ESS) power plants, specifically to a method and system for extracting grid-connected power from PV power plants under complex fluctuation scenarios. The method includes: acquiring meteorological data and PV power generation data of the PV power plant, and acquiring the State of Charge (SOC) value of each energy storage device in the energy storage system; calculating the PV output attenuation value to correct the predicted PV output power; acquiring the PV output fluctuation intensity and grid-connected power fluctuation fit of the PV power plant; obtaining the smoothness support of PV grid connection based on this; calculating the energy storage charging compensation value of the PV power plant; obtaining the scaling factor of the wavelet packet decomposition time scale; adjusting the time scale during wavelet packet decomposition of PV power generation; and extracting the grid-connected power of the PV power plant from the low-frequency PV power generation components after wavelet packet decomposition. This application can improve the extraction accuracy of grid-connected power from PV power plants under complex fluctuation scenarios.

The invention relates to the technical field of ocean renewable energy sources, in particular to a wave prediction fused WEC cooperative intelligent control method and system, and the method comprises the following steps: building a kinetic model of a point absorption type adaptive bistable wave energy conversion device based on the Newton second law; the dynamic model comprises self-adaptive bistable nonlinear stiffness force provided by an inclined spring and a horizontal spring; based on a historical wave excitation force sequence, utilizing the trained enhanced depth operator network model to predict a wave excitation force sequence in a future time domain; a kinetic model is used as a prediction model, maximization of energy capture efficiency is used as a target, a predicted wave excitation force sequence and system state constraints are used as conditions, a model prediction control optimization problem is constructed and solved, an optimal power extraction device control force sequence is obtained, a first control quantity is applied to a wave energy conversion device, and a second control quantity is applied to the wave energy conversion device. Rolling optimization is carried out based on the actual state of the system, and cooperative intelligent control over the wave energy conversion device is achieved.