14 results about "RLC circuit" patented technology

The application discloses a transformer operation state self-diagnosis method and system, relates to the technical field of state diagnosis, and comprises the following steps: acquiring and analyzing relevant data in the working state according to test conditions; judging the primary side circuit element state according to the primary side data and an RLC circuit step response time constant formula; calculating the voltage stability according to the secondary side data; calculating the delay duration of the tap switch and the damage degree of the tap switch according to the primary side data; dividing and outputting the state grade; and predicting the first fault time point according to the delay duration and a preset delay duration. The application realizes predictive maintenance by predicting the first fault time point, avoids power failure accidents caused by sudden failures, comprehensively integrates various data of the primary side and the secondary side, combines specific analysis of a circuit model and key components, forms a multi-dimensional and systematic diagnosis system, and realizes comprehensive, intelligent and fine management of the transformer operation state.

A power converter system is provided. The power converter system includes an energy storage device electrically coupled to a direct current (DC) power source and configured to store electrical energy received from the DC power source, an inverter electrically coupled to the energy storage device, and a pulse width modulation (PWM) filter electrically coupled to the inverter and including a resistor inductor capacitor (RLC) circuit. The power converter system further includes a controller coupled in communication with the inverter and configured to, in an active mode, cause the inverter to convert a DC power signal received from the energy storage device to an alternating current (AC) power signal at an output node of the PWM filter, and in a fast discharge mode, pulse the inverter to cause the DC power signal to be dissipated by the RLC circuit of the PWM filter, substantially discharging the energy storage device.

The invention discloses a method for simulating a dynamic starting characteristic of a low-power Hall thruster, which comprises the following steps of: analyzing a transfer function form of each module, measuring input and output parameters of each module on a thruster entity, and obtaining a transfer function of each module through an MATLAB system identification tool box; rLC circuit structures corresponding to all the modules are designed respectively, transfer functions of the RLC circuit structures are made to be consistent with transfer functions obtained through system identification, parameters of all components of the RLC circuits are calculated, simulation is conducted through simulink, the parameters of the components are further adjusted and optimized, and simulation results are made to be basically consistent with dynamic starting characteristics and steady-state parameters of actually-measured parameters; and finally, the RLC circuits are connected according to the connection relation of all modules of the thruster. The simulated load device can be used for circuit simulation in the development stage of the PPCU and testing in the production stage and the system joint test stage, compared with a pure resistive load, the model can preposition the risk of poor dynamic matching between the PPCU and the thruster, performance optimization of the PPCU product is facilitated, and the iteration efficiency is improved.

This application relates to the field of conductivity measurement technology, specifically to a non-contact conductivity measurement device. It includes a measurement unit, a signal processing unit, a temperature compensation unit, a power supply unit, and a sample container. The measurement unit includes a solenoid, a resistor, and a capacitor connected in series to form an RLC circuit module. The signal processing unit includes an analog-to-digital converter (ADC) and a processor, with the processor connected to the measurement unit via the ADC. The temperature compensation unit is connected to the processor and used to monitor the ambient temperature. The power supply unit is connected to the measurement unit, the signal processing unit, and the temperature compensation unit. The sample container is arranged at intervals between the measurement unit and the sample container and is used to hold reference samples. This application enables non-contact conductivity measurement, avoiding the electrode corrosion and cleaning problems inherent in contact measurements.

The invention discloses a negative voltage signal generation circuit and FTTR equipment, and the circuit comprises a switching circuit, an RLC circuit, a capacitor circuit, and a rectification circuit. The switching circuit is used for receiving the switching control signal and is switched on or switched off according to the switching control signal; the RLC circuit and the switching circuit are connected in series between the power supply end and the grounding end, and the RLC circuit is used for storing energy according to a positive voltage power supply signal provided by the power supply end when the switching circuit is switched on; when the switching circuit is switched off, a first electric signal is output; the capacitance circuit is connected with the RLC circuit and the switching circuit and is used for storing energy according to the first electric signal when the switching circuit is disconnected; when the switching circuit is switched on, a second electric signal is output; the rectification circuit is connected with the capacitance circuit and the signal output end and used for generating a negative voltage signal according to the second electric signal. According to the technical scheme, through cooperative work of the switch circuit, the RLC circuit and the capacitor circuit, efficient transmission and conversion of energy are achieved by using a charge pump and a switch modulation principle.

The present application relates to the technical field of three-dimensional integrated circuit protection in aerospace radiation environment, and particularly relates to a method and system for simulating and modeling a microsystem interconnection module based on a through silicon via under proton irradiation. The method comprises: constructing a three-dimensional finite element model containing a through silicon via, a redistribution layer and a micro-bump, adjusting material parameters to extract scattering parameters, and establishing a correlation model between material characteristics and scattering parameters; constructing an equivalent RLC circuit in an ADS environment and establishing a corresponding relationship between the equivalent RLC circuit and the scattering parameters; combining a proton irradiation experiment to obtain scattering parameters under different radiation fluences, and further establishing a correlation model between the radiation fluence and the RLC circuit parameters. The present application combines simulation and experimental methods to achieve precise modeling between the radiation dose, the circuit parameters and the scattering characteristics, and provides support for the electrical performance prediction and protection design of three-dimensional microsystems in complex radiation environments.

The present application provides an aerosol substrate heating parameter analysis method, a related device, and a storage medium. The aerosol analysis method is applied to an aerosol-generating system. The aerosol-generating system comprises a power supply, a radio frequency source, and a radio frequency radiator. The radio frequency radiator is configured to serve as a container for accommodating an aerosol substrate and as a radiating element for generating a heating electric field. The method comprises: equivalently modeling the aerosol-generating system in an unloaded state as a first RLC circuit; when the aerosol-generating system is in a loaded state, equivalently modeling the aerosol substrate and the radio frequency radiator as a parallel capacitor, and, on the basis of the parallel capacitor, replacing a capacitor in the first RLC circuit to form a second RLC circuit for the aerosol-generating system in the loaded state; and, on the basis of the second RLC circuit, analyzing changes in target parameters of the aerosol substrate during a heating process.

This invention discloses a method and system for modeling the equivalent circuit of a rail train, relating to the field of modeling technology. The method includes the following steps: combining the equivalent circuits of the carriage and connector, as well as the equivalent circuits of the rails below the carriage and connector, to obtain the equivalent circuit of the rail train; solving for the values ​​of each impedance at different frequencies in the corresponding equivalent circuits of the carriage, connector, and rails below the carriage using multiple impedance frequency responses, to obtain the frequency response of each impedance in the equivalent circuit of the rail train; fitting the frequency response of each impedance in the equivalent circuit of the rail train using the vector matching method, and representing the fitting result using an RLC circuit to obtain the equivalent circuit model of the rail train. This invention constructs an equivalent circuit model of the train and rails using the impedance frequency responses of the train and rails, which can reflect the impedance relationship between the train and rails at different frequencies, facilitating the analysis of the current path and magnitude after a large current is injected into the rails.

This invention relates to the field of optimal control methods and devices for RLC circuits, and particularly to a steady-state control method and device for RLC series circuits based on improved ADP, comprising the following steps: S1, modeling and characterizing the RLC series circuit control system, including constructing the system state equation, giving initial state conditions and control objectives, and designing performance index functions; S2, setting core parameters, including artificial neural network parameters and iterative control parameters; S3, constructing an initial admissible control law, obtaining an initial admissible control law before formally entering strategy iteration, including selecting an initial performance index function, selecting an initial point set, initializing a BP neural network, and screening the initial admissible control law; S4, strategy iteration; S5, outputting the optimal control law. This invention has the following beneficial effects: improving the algorithm's anti-interference ability, reducing computational overhead and state space dependence, and adapting to the needs of practical scenarios where the initial state of the RLC series circuit is only within a small range but cannot be accurately known.

The utility model discloses a kind of ore carrier full-bridge inverter arc welding power supply transformer, comprising: power supply system, electronic power system, given feedback system and electronic control system;Electronic power system includes full-bridge inverter circuit, output rectifier and RLC circuit;Full-bridge inverter circuit includes four switching modules, first magnetic core inductance, direct-current blocking capacitor and transformer;The output end of any two switching modules is connected with the one end of magnetic core inductance and the one end of primary side of intermediate-frequency transformer respectively;The input end of remaining two switching modules is connected with the one end of magnetic core inductance and the one end of primary side of transformer respectively;The other end of first magnetic core inductance is connected with the one end of direct-current blocking capacitor, the other end of direct-current blocking capacitor is connected with the other end of primary side of intermediate-frequency transformer;Intermediate-frequency transformer secondary side is connected with the input end of output rectifier;The utility model avoids the problem that transformer saturation, switching tube overload caused by using high-power power supply transformer in shipbuilding process.

An in-cell touch display device is presented herein that features an increased accuracy of touch sensitivity and touch recognition. The in-cell touch display device includes a display panel including a transistor formation layer with a driving transistor, a light emitting element layer on the transistor formation layer that includes a light emitting element, and a plurality of touch electrodes in the transistor formation layer or the light emitting element that are driven during a display period and a touch period in a time-division manner, a touch driving circuit for supplying a touch driving voltage to a touch electrode, and a power modulation circuit including a first RLC circuit and a second RLC circuit each including a resistor, an inductor, and a capacitor connected to a corresponding one of a high potential power line that supplies the driving transistor and a low potential power line that supplies a cathode electrode.

Medical diagnostic devices and related methods of use are described in which one or multiple coils in a sensor, each coil connected with an RLC circuit and frequency counter, are held against a patient's head at predetermined cranial locations. Frequencies of the RLC circuit are measured and compared against those taken from known, control heads, to determine whether there is a medical problem and what type of problem. In some instances, too high of frequencies can reveal pooled blood in the head, a sign of hemorrhagic stroke, while too low of frequencies imply lack of blood supply, a sign of ischemic stroke. A head-mountable frame can assist a first responder in securing and guiding the coils and, along with fiducials, allow for automatic comparison of frequencies with the correct control data.

The invention discloses a transformer operation state self-diagnosis method and system, and relates to the technical field of state diagnosis, and the method comprises the following steps: obtaining and analyzing related data in a working state according to a test condition, judging the state of a primary side circuit element according to primary side data and an RLC circuit step response time constant formula, and carrying out the self-diagnosis of the operation state of a transformer. And calculating the voltage stability according to the secondary side data, calculating the delay duration of the tap switch and the damage degree of the tap switch according to the primary side data, dividing and outputting state levels, and predicting a first fault time point according to the delay duration and a preset delay duration. By predicting the first fault time point, predictive maintenance is realized, power failure accidents caused by sudden faults are avoided, various data of the primary side and the secondary side are integrated, specific analysis of a circuit model and key parts is combined, a multi-dimensional and systematic diagnosis system is formed, and comprehensive, intelligent and refined management of the operation state of the transformer is realized.

It addresses to a process and device capable of mitigating electric arc faults in electrical panels as quickly as a few milliseconds. The technology uses power thyristors that, after detecting the arc, make the electrical connection of the panel's input bus to ground potential in a controlled manner, diverting the arc currents to this preferred path and forcing their extinction. The proposed suppressor device has improved features, as it includes a “snubber” that forms with the current limiting impedance with inductive reactive component a resonant circuit of Resistance, Inductance (L) and Capacitance (RLC). The “snubber” is capable of mitigating adverse consequences of the RLC circuit voltage transient due to the thyristor shutdown, protecting the same against voltage rises and spurious triggers and limiting the voltage on the panel bus to values below those capable of sustaining the arc fault. The technology relates to equipment for industrial and commercial electrical systems, specifically load distribution centers (LDC) or motor control centers (MCC), which can be configured as a compartment within a LDC or MCC.