369 results about "Current generator" patented technology

The invention discloses a phase-adjustable large-current generator, and the generator comprises a main circuit module, and a topological structure of the main circuit module employs a multi-stage IGBT inverter; the phase control module inputs a power grid voltage signal through a voltage transformer, adopts an SOGI-PLL structure to improve signal tracking precision, and combines a virtual synchronous machine technology to enhance system balance and a self-adaptive control strategy to dynamically adjust an output signal so as to realize phase control and synchronization; the electromagnetic compatibility optimization module adopts a layered shielding design and is combined with an optical fiber to transmit a control signal, so that the electromagnetic compatibility of equipment is improved; a relay protection test integration module, wherein the relay protection test integration module comprises a differential protection test mode and a distance protection test mode; according to the invention, the problems of low phase adjustment precision, poor synchronization stability and insufficient electromagnetic compatibility of a large current generator in a new energy grid-connected environment are solved.

A dimming method is to be implemented by a brightness divider, and includes steps of: (A) determining whether a brightness value is smaller than or equal to a predetermined reference value; (B) when it is determined in step (A) that the brightness value is smaller than or equal to the predetermined reference value, setting a magnitude value that is related to a current generator, and setting a pulse width value that is related to a switch based on the brightness value; and (C) when it is determined in step (A) that the brightness value is not smaller than or equal to the predetermined reference value, setting the magnitude value based on the brightness value, the predetermined reference value and a predetermined order setting, and setting the pulse width value based on the predetermined reference value.

The invention relates to a generation power control method, device and equipment of a slope type gravity energy storage system, a storage medium and a program product, and relates to the technical field of gravity energy storage. By adopting the method, the generated power stability of the slope type gravity energy storage system can be improved. The method comprises the following steps: according to power generation request power and unit output power of the slope type gravity energy storage system, determining the current demand number of generator sets; the current generator set is a power generation device comprising two rails; selecting a target number of trucks to be in place on a high-altitude platform of the slope type gravity energy storage system according to the demand number of the current generator set; in response to a power generation starting signal of the slope type gravity energy storage system, according to the truck acceleration control principle, a variable parameter mode is adopted, and the truck is controlled to slide down at wrong time; responding to a power generation stop signal of the slope type gravity energy storage system, and when it is recognized that all the truck slides down and stops on the low-altitude platform of the slope type gravity energy storage system, power generation is ended.

The invention relates to the technical field of generator control, and discloses an emergency control method, device and equipment for a generator set controller and a medium, the same generator set at least comprises two generator controllers, the method is applied to any current generator controller in the generator set, and the method comprises the following steps: determining whether a target generator controller has a fault or not; the target generator controller is another generator controller in the generator set; if the target generator controller breaks down, power supply of the target generator controller is cut off, and input of a first current and voltage signal and output of a control signal based on a target generator are conducted; and accessing the first current and voltage signal, and carrying out parallel operation control on the target generator and the current generator. According to the invention, the generator controlled by the faulty generator controller can be restarted to solve related faults caused by the faulty generator controller, and the normal generator controller automatically carries out parallel operation control on all generators without manpower, so that the operation reliability of the system is improved.

The invention relates to a composite function converter suitable for a multi-phase high-speed permanent magnet direct-current generator. An uncontrolled rectifier bridge arm is formed by connecting two high-frequency rectifier diodes in series; the controllable rectifier bridge arm is formed by connecting two IGBTs (Insulated Gate Bipolar Translator) with antiparallel diodes in series; an upper tube IGBT collector of the controllable rectifier bridge arm and a cathode of an upper tube diode of the uncontrolled rectifier bridge arm are connected in parallel with an anode of the intermediate bus capacitor; the emitting electrode of the lower tube IGBT and the anode of the lower tube diode of the uncontrolled rectifier bridge arm are connected in parallel with the cathode of the intermediate bus capacitor; the emitting electrodes of the upper tubes IGBT of the controllable rectifier bridge arms are respectively connected to the output end of the generator; the anodes of the upper diodes of the uncontrolled rectifier bridge arms are respectively connected to the other output ends of the generator; the interleaved BUCK module is connected between the intermediate DC bus capacitor and the load, and the BUCK control unit is used for controlling the interleaved BUCK module to operate; and the barring control unit is used for controlling the controllable rectifier bridge arm to realize a generator barring function.

A circuit includes a supply node receiving a supply voltage; an output node providing a regulated voltage; startup circuitry coupled to the supply node; current generator circuitry coupled to the startup circuitry and producing a current; a bandgap node coupled to bandgap circuitry to receive a bandgap voltage; multiplier circuitry coupled to the bandgap node and the current generator circuitry to receive and apply scaling to the current; a first transistor providing a threshold voltage drop across the first and second transistor nodes; a first resistive element interposed between the first transistor and the bandgap node; a second resistive element coupled between ground and the second node of the first transistor; and an operational amplifier receiving a pre-regulated voltage as a function of the bandgap voltage, the threshold voltage across the first transistor, and a voltage drop across the first and second resistive elements.

The invention relates to the field of power system equipment detection, in particular to a residual magnetism measuring device and method for a large power transformer. The residual magnetism measuring device for the large-scale power transformer comprises the large-scale power transformer, a high-voltage bushing, a high-voltage neutral point bushing, a low-voltage bushing, an iron core outgoing line bushing, a first capacitor, a second capacitor, a detection impedor, a partial discharge instrument and a large-current generator, the capacitance of the first capacitor is 30pf-40pf and is matched with the capacitance of a transformer iron core, and the capacitance of the second capacitor is 300pf-400pf and is 10 times proportional to the capacitance of the first capacitor; the method comprises the following steps: carrying out a long-time induction withstand voltage and partial discharge test after a conventional test, measuring discharge amounts Q1, Q2 and Q3 at 0.5, 1 and 1.5 times of rated voltages, judging residual magnetism according to the difference value of the discharge amounts and an iron core grounding current, and if the residual magnetism exceeds the standard, magnetizing and demagnetizing by using a large current generator at the frequency of 150Hz. The method has the advantages that the residual magnetism is measured and evaluated in time, equipment faults are avoided, operation is easy and convenient, and adaptability is high.

The invention discloses a portable intelligent temperature control sleeping bag in the field of sleeping bags, which comprises a sleeping bag body, the sleeping bag body comprises an upper-layer covering part and a lower-layer bearing part, the lower-layer bearing part is provided with a control assembly, a current emission assembly and a heating assembly, the current emission assembly is used for emitting micro current, and the heating assembly is used for heating the control assembly. The control assembly is electrically connected with the current emission assembly to control the intensity, frequency and duration of micro-current released by the current emission assembly, the micro-current generator is connected with the electrode through a wire to form an electrical path, the human body makes contact with the electrode, and the micro-current generator transmits the micro-current to the human body through the electrode to achieve micro-current physiotherapy. The heating assembly is used for heating the interior of the sleeping bag body, the control assembly is electrically connected with the heating assembly to control the temperature in the sleeping bag body, the heating assembly further achieves thermal effect physical therapy, and according to different body parts, the power and the temperature adjusting range of the heating assembly are different. Therefore, the requirements of different parts of a human body on warm keeping and thermal effect physical therapy are met.

The application provides a high-voltage direct-hanging energy storage equipment energy storage submodule test system and test method, comprising: a current generator, which generates test current using a cascaded full-bridge structure and can reduce the harmonic content of the output voltage of the current generator based on carrier phase shift or carrier layering modulation; an energy storage submodule to be tested; a current controller for controlling the current generator to adjust the test current; a submodule controller for controlling the energy storage submodule to be tested to adjust the state of charge and voltage of the submodule; and an energy storage system parameter model for outputting reference signals for current control and state of charge control to the current controller and the submodule controller, respectively. The application can test the energy storage submodule in accordance with the actual system operation condition without building a complete energy storage system and effectively reduces the requirements of the test circuit for the switching frequency of the power semiconductor device, the filter and the direct current power supply.

The invention relates to the technical field of electronics, and discloses a pneumatic and wake flow characteristic measurement system, method, device and equipment of a wind turbine, the system collects pneumatic data of the wind turbine through a pneumatic measurement module, and the system collects voltage data of a direct current generator and current data in a circuit through a power measurement module; the particle image velocity measurement module collects a flow field image of the wind turbine in a wake flow area. The data acquisition and analysis module serves as a data center, is connected with the pneumatic measurement module, the power measurement module and the particle image velocity measurement module, supports multi-channel synchronous triggering, and can receive pneumatic data from the pneumatic measurement module and voltage data and current data from the power measurement module at the same time. And a flow field image of the particle image velocity measurement module. Therefore, the consistency of different types of data in acquisition time is ensured, a basis is provided for subsequent synchronous analysis, and simultaneous and synchronous testing of pneumatic and wake flow parameters of the wind turbine is realized.

The invention discloses a test method for a strain clamp, and the method comprises the steps: carrying out the crimping and drainage plate assembly of the strain clamp, and fastening a bolt on a drainage plate to a preset initial torque value through a digital display torque wrench; measuring the contact resistance of a drainage plate of the strain clamp; arranging a T-shaped thermocouple at a monitoring point position of the strain clamp; sequentially applying currents with different percent calculated current-carrying capacities to the strain clamp through a large current generator, and recording transient temperature rise data corresponding to each monitoring point position; and measuring the contact resistance and transient temperature rise data under different bolt torques under the current of each percentage calculation current-carrying capacity. According to the invention, the actual working state of the strain clamp under different drainage plate assembly conditions can be simulated, the bolt torque of the strain clamp is taken as an independent variable, the contact resistance between the drainage plates under different torques is measured, and the overall temperature distribution of the clamp is measured through the temperature measurement probe, so that the test accuracy is improved. Therefore, real-time measurement of three kinds of data of bolt torque, contact resistance and wire clamp temperature rise is realized.

The invention discloses a high-precision dynamic compensation method and circuit for I / O electric leakage, and the method comprises the steps: monitoring the voltage of an I / O port in real time through an I / O voltage detection module, precisely sampling the electric leakage current through an I / O electric leakage sampling module, and carrying out the processing through an electric leakage monitoring resistor network, an electric leakage monitoring module, a voltage-to-current generator module and the like. The electric leakage direction is determined by the electric leakage current direction judgment detector, and finally the I / O electric leakage dynamic compensation module outputs adaptive current to compensate electric leakage. In addition, parameters can be adjusted through a specific model formula, accurate compensation of electric leakage under different conditions is achieved, the problems of I / O electric leakage direction detection, dynamic monitoring, compensation and the like can be effectively solved, digital and analog function multiplexing at the same I / O port is achieved, the performance of an analog circuit sensitive to I / O electric leakage is improved, and the advantages of high precision and dynamic compensation are achieved.

The invention discloses a micro-current electrical stimulation medical device and a sleep regulation and control system, and relates to the technical field of micro-current stimulation nerve regulation. The device comprises a controller and a current generator, and an earplug main body which is provided with a first stimulation electrode which is in contact with the auricle and is used for outputting a transcranial micro-current stimulation signal through the auricle; the earplug accessory extends towards the direction of the antihelix feet based on the earplug main body, the earplug accessory has compliance and can be matched with the shape of the antihelix, and the far end of the earplug accessory is clamped and fixed in the triangular nest between the antihelix feet; a second stimulating electrode is arranged on the earplug accessory, is in contact with the antihelix foot and / or the triangular fossa and is used for outputting a percutaneous micro-current stimulating signal through the antihelix foot and / or the triangular fossa; and the anti-falling structure is used for fixing and limiting the earplug so as to form resistance for separating the first stimulating electrode and the second stimulating electrode from the ear skin. According to the invention, safe and reliable composite micro-current stimulation can be provided.

Radio-frequency (RE) microneedling skin resurfacing systems are described including an electrode with an array of partially insulated needles, where the needles' exposed tips conduct bipolar RF electric current into a patient's skin, thus enhancing collagen production that stretches the skin. The electrode is carried by an application handle, which connects to an RF current generator. The applied treatment cycles utilize vacuum to pull the skin against the needles and dielectric coolant to cool the epidermis. The needles' array penetrates the skin to a pre-determined depth inside the dermis layer, followed by a sequential delivery of RF bipolar current pulses. The treatment cycle is controlled by an algorithm, designed to raise the dermis layer temperature for a certain duration. The treatment cycle and algorithm rely on dynamic impedance measurements and temperature measurements by thermistors to assure optimized controlled heating of the dermis layer to a target temperature between 45 and 69°C.

System and method for controlling one or more light emitting diodes. For example, the system for controlling one or more light emitting diodes includes a current generator configured to generate a first current flowing through one or more light emitting diodes. The one or more light emitting diodes are configured to receive a rectified voltage generated by a rectifying bridge coupled to a TRIAC dimmer. Additionally, the system includes a bleeder configured to receive the rectified voltage, and a controller configured to receive a sensing voltage from the current generator and output a control signal to the bleeder. The sensing voltage indicates a magnitude of the first current.

A system for efficiently generating or originating a tailored electromagnetic (EM) wave having a lower velocity than the speed of electromagnetic waves in free space includes a coaxial waveguide which extends linearly and a sinewave current generator. The coaxial waveguide includes a tubular outer body and a tailored emitting antenna disposed coaxially within the tubular outer body. The tubular outer body is formed of a first conductive material and defines a space therein which may be maintained as vacuum. The tailored emitting antenna is constructed physically and electrically by at least three phase-shifted sub-antennas connected in series, each of the sub-antennas being formed of a second conductive material which is less conductive than the first conductive material. The sinewave current generator generates multiple phase-shifted sinewave currents which are respectively input to the sub-antennas.

The utility model discloses a sewage-proof alternating-current generator with high air inlet rate, which comprises a protective cover, an adjuster, a protective plug, a dustproof pad, a sealing ring, a rectifier bridge rear cover assembly, a stator assembly, a rotor assembly, a front end cover, a belt pulley and an adjusting washer, a plurality of raised air guide windows are formed on the top surface of the protective cover, the air inlets of the air guide windows are arranged downwards, and the air inlets of the air guide windows are arranged downwards. The beneficial effects of the utility model lie in that on the premise of not changing the generator, through the structural design of the shutter-type air guide windows on the protective cover, the air inlet amount of the motor is increased, the heat dissipation effect of the motor is enhanced, the temperature rise of the motor is reduced, and the service life of the motor is prolonged. Meanwhile, compared with a traditional structure that air holes are directly formed in the plane of the protective cover, mud oil water obliquely above the motor mounting direction can be effectively prevented from invading and flowing into the protective cover, and the product quality is improved.

The application provides a real-time monitoring device and method for air supplement amount of a Francis turbine unit of a hydropower plant, and relates to the field of Francis turbine units of hydropower plants.The device comprises a thermistor, an air supplement pipe, a current generator, a thermistor temperature sensor, a current regulator and a wind speed regulator, wherein the thermistor is fixed in the middle of the air supplement pipe, and the current generator generates rated voltage to heat the thermistor; the current regulator is used for real-time measurement of output current of the thermistor and records the change frequency of the output current; the wind speed regulator is used for measurement of wind speed at the air supplement pipe opening; and the thermistor temperature sensor is used for measurement of the temperature of the thermistor. The application fixes the thermistor in the air supplement pipe, determines the relationship curve between the air supplement amount and the output current, solves the problem that the air supplement amount of the Francis turbine unit cannot be monitored, and uses the thermistor principle to realize accurate measurement, is durable and not easy to be damaged, is convenient to install, can be introduced into a monitoring system, and can be monitored in real time on a host computer.

The application discloses an elevator braking energy collecting device and relates to the technical field of elevator kinetic energy recovery. The device comprises a braking module installed on the top or bottom of an elevator car; the braking module is in transmission connection with a direct-current generator A arranged on the top or bottom of the elevator car; the end of the direct-current generator A is connected with a CVT gearbox; the braking module comprises a vertically arranged rectangular frame, the opposite two side walls of the rectangular frame are provided with convex columns, the convex columns are rotatably connected with swing arms, the end of the swing arm is rotatably assembled with a mounting shaft through a bearing, the mounting shaft is fitted with a friction roller rolling along the elevator guide rail and a transmission wheel A; a transmission shaft is rotatably arranged between the two convex columns through a bearing, and the transmission shaft is provided with a transmission wheel B in transmission connection with the transmission wheel A. The braking module is arranged on the top and / or bottom of the elevator car to drive the rotation of the direct-current generator A, so that the device can generate electricity in the whole process of the elevator descending.

The invention provides a generator set test run quick-mounting device and a working method, relates to the field of test run devices, and aims to solve the problems of poor applicability and low test run efficiency of a current generator set, the distance between a generator mounting position and an engine mounting position of a base can be adjusted according to different equipment sizes to adapt to different types of generators and engines; the connecting assembly adapts to interfaces of different devices through the adapter flange and the flywheel connecting disc, and spline fit can be compatible with shaft diameter differences within a certain range. Meanwhile, axial dimensional deviations of different devices can be compensated through stretching and retracting of the elastic pieces and sliding of the spline sleeves, racks do not need to be customized for specific devices, the applicability is improved, transmission connection of the connecting assemblies is achieved through tooth-shaped matching of the spline shafts and the spline sleeves, bolts are not needed, preliminary connection can be completed only by aligning the spline sleeves with the two spline shafts in the butt joint process, and the butt joint efficiency is improved. And the assembly steps are greatly simplified.

A current generated cleaning device in accordance with the present invention comprises: a power source, a conductor, a signal generator controller, a current output head, a current generator module, an inlet module, an outlet module, a self-erected water container, and a vertical support frame, the current generated cleaning device use current generated from the current generator module to perform the cleaning and washing of clothes or objects.

The application relates to the technical field of intelligent control of the power generation industry, in particular to a generator set operation index optimization method, device, equipment and medium, which comprises the following steps: inputting multi-source operation data of a current generator set into a preset time sequence prediction model to perform operation parameter prediction, comparing the prediction result with historical optimal operation parameters under corresponding working conditions, generating an operation deviation report, and performing attribution analysis on the operation deviation report based on a preset SHAP algorithm; generating operation index optimization suggestions according to the attribution analysis result, optimizing the operation index of the current generator set, and obtaining the optimized operation index. Thus, the problem that the operation economy and safety of the generator set are poor due to the lack of dynamic prediction, interpretable strategy generation, safety boundary evaluation and experience closed-loop mechanism in the existing power generation technology is solved, dynamic intelligent optimization and safety regulation and control of the operation index of the generator set are realized, and the operation economy and safety are significantly improved.

An activated clotting time measurement apparatus comprising a catheter having first and second lumens inserted into a vascular vessel of a patient and a sensor module. The first and second lumens are connected to a peristaltic pump whereby aliquots of blood is collected from the patient's vascular vessel and delivered to a sensor cartridge in the sensing module by the first lumen via a control valve and uncollected blood is returned to the patient's vascular vessel in the second lumen. The sensor cartridge has a sensing channel, a pair of electrodes, and a clotting activator whereby the aliquots of blood are clotted. A current generator generates current to the electrodes through the clotted blook aliquots where an impedance measurement device measures the electrical impedance caused by the clotted blood and delivers impedance signals to a processor and display device for processing and display.

An anti-fuse circuit includes a current generator and an anti-fuse sensing unit. The current generator has at least one replica electronic element. The anti-fuse sensing unit is electrically connected to the current generator, and the anti-fuse sensing unit has at least one electronic element. The electronic element specification of the at least one electronic element of the anti-fuse sensing unit is the same as the electronic element specification of the at least one replica electronic element of the current generator. The current generator supplies current to the anti-fuse sensing unit to sense the anti-fuse. By means of the technical solution of the present application, the anti-fuse circuit can improve the accuracy of sensing the anti-fuse.

Charging circuitry for charging a bootstrap capacitor that provides a gate drive voltage to a high-side switch of switching circuitry, wherein a first terminal of the bootstrap capacitor receives a variable voltage, the charging circuitry comprising: current source circuitry configured to supply a charging current to the bootstrap capacitor; a charging switch for selectively coupling the current generator circuitry to the bootstrap capacitor to permit charging of the bootstrap capacitor by the current generator circuitry; and control circuitry configured to control operation of the charging switch to charge the bootstrap capacitor to at least a predefined target voltage, wherein the predefined target voltage is referenced to the variable voltage.

The application discloses a kind of fully closed sodium alginate capsule forming device, including fixed body, fixed body is connected with positioning body by screwing or welding mode on it, the front end surface of the fixed body is connected with forming cavity by screwing or welding mode, the bottom of the forming cavity is fixedly connected with processing cavity, the forming cavity is communicated with processing cavity, the bottom of the processing cavity is fixedly provided with magnetic stirrer;High-voltage direct-current generator is fixedly provided on the forming cavity, the fixed cavity is connected with the inner wall of the forming cavity by screwing or welding mode, the fixed cavity is provided with communication pipe, and the communication pipe is communicated with the liquid guide device;Flow guide plate is fixedly provided in the processing cavity, the flow guide plate is connected with the inner wall of the processing cavity by sliding mode, and positioning plate is fixedly provided below the two sides of the flow guide plate, hydraulic lifting cylinder is fixedly provided between the positioning plate and the flow guide plate, and flow guide hole is formed in the flow guide plate.

The invention belongs to the field of fault protection of a high-voltage direct-current generator controller, and particularly relates to a software design method for excitation positive short circuit of a generator controller, which comprises the following steps of: setting excitation protection conditions, and when the frequency of a permanent magnet machine is greater than or equal to a network casting rotating speed, a voting unloading signal is network casting permission and a control command of a main contactor is switched on; when the excitation protection condition is met, an excitation over-ground short circuit fault protection mark is set, excitation is removed, and the main contactor is switched off; when it is detected that the excitation positive voltage is normal for a first continuous number of times, eliminating the excitation positive voltage abnormal count and the excitation over-ground short circuit fault mark; and if the frequency of one beat of the permanent magnet machine is smaller than the network casting rotating speed or the voting unloading signal is unloading or the main contactor control command is disconnection, clearing the excitation positive voltage abnormal count, the excitation positive voltage jump count and the excitation over-ground short circuit fault mark. And the continuous short circuit or intermittent short circuit fault of the excitation positive voltage can be accurately identified.

The invention discloses an electric power system control method and system based on adversarial training and terminal equipment thereof, and belongs to the field of electric power systems. Updating the discriminator based on the generated track set; obtaining a current state-action value function; updating the generator based on the approximate expert strategy probability and the current state-action value function; when the preset training target is not met, repeatedly executing an interaction action based on the current generator and the current discriminator, and obtaining a correction generator and a correction discriminator which meet the preset training target; obtaining a Markov agent based on the correction generator and the correction discriminator; actual operation data of the power system are obtained in real time, and a prevention and control strategy of the power system is obtained based on the Markov agent and the actual operation data. According to the adversarial training-based power system control method and system and the terminal equipment thereof disclosed by the invention, efficient and stable acquisition of a prevention and control strategy in dynamic operation of the power system is realized.

The utility model relates to the technical field of alternating-current generator structures, in particular to an alternating-current generator structure which comprises a machine core, a front end cover and a rear end cover, the front end cover and the rear end cover are spliced in a front-back mode and arranged on the periphery of the machine core in a wrapping and sleeving mode, and a front protective cover close to the front side of the front end cover is installed and connected on the peripheral side face, close to the outer side, of the front end cover. A rear protective cover close to the rear side of the rear end cover is installed and connected to the peripheral side face of the rear end cover, and the front protective cover comprises a fan-shaped front plane protective plate perpendicular to the axial direction of the generator and an arc-shaped front curved surface protective plate integrally connected to the rear side edge of the front plane protective plate. The rear protective cover comprises a fan-ring-shaped rear plane protective plate perpendicular to the axial direction of the generator and an arc-shaped rear curved surface protective plate integrally connected to the front side edge of the rear plane protective plate, the bending direction of the front curved surface protective plate and the bending direction of the rear curved surface protective plate are consistent with the circumferential direction of the generator, heat dissipation is good, and use is flexible.

A contactless power feeding facility includes a coupling unit electromagnetically coupling a target feeder line and an adjacent feeder line. A target power supply apparatus includes: a phase detector detecting the induced current phase which is the phase of an induced current flowing through the target feeder line by the electromagnetic induction via the coupling unit while an alternating current is supplied to the adjacent feeder line by an adjacent power supply apparatus; an alternating-current generator generating the alternating current to be supplied to the target feeder line; and a phase controller controlling the alternating-current generator such that the phase of the alternating current to be supplied to the target feeder approaches the induced current phase detected by the phase detector.