962 results about "Electric coupling" patented technology

The invention discloses an energy storage system state evolution trend prediction method based on multi-source data fusion. The method comprises the steps of terminal voltage, current and temperature time sequence data acquisition, time sequence segmentation normalization, multi-physics field coupling feature construction, trend prediction model construction and training and energy storage system state evolution trend prediction. According to the method, the distinguishing capacity of the model for charging and discharging physical characteristics is improved, meanwhile, the voltage change rate, the multi-dimensional feature vector of the differential internal resistance and the thermal-electric coupling effect and the explicit encoding electric-thermal-resistance coupling relation are constructed, the transient response and the temperature hysteresis effect can be effectively captured, and then the model can be used for analyzing the charging and discharging physical characteristics. A degradation-aware cross-cycle feature extraction and gating mechanism is adopted, short-term fluctuation and long-term trend are adaptively balanced in multi-scale prediction, the prediction conflict problem is relieved, finally, physical constraints based on the electrochemical law and the internal resistance temperature characteristic are embedded in a loss function, it is ensured that the prediction result is accurate in numerical value and conforms to the physical law, and the prediction accuracy is improved. And generation of physically impossible solutions is avoided.

The invention discloses a CPLD-driven IGBT short-circuit current dynamic monitoring method and system, and relates to the technical field of power electronics, and the method comprises the specific steps of S100 real-time data acquisition, S200 dynamic threshold calculation, S300 short-circuit state judgment, S400 rapid protection execution, and S500 fault data recording and uploading. Accurate and prospective judgment of the short circuit state of the IGBT is achieved, two stress parameters including the direct-current bus voltage and the junction temperature serve as independent variables, when the bus voltage rises, the voltage stress borne by the IGBT in the turn-off period is increased, meanwhile, the current peak at the short circuit moment is more remarkable, early warning is conducted in advance by dynamically lowering the threshold value, and therefore the short circuit state of the IGBT is accurately judged. According to the mechanism, the monitoring system does not simply respond to the occurred overcurrent, but can pre-judge the safety boundary of the device under the current working condition, so that intervention is implemented before the current really reaches a dangerous peak value, and a protection blind area under a severe working condition is effectively avoided.

A flow sensor for sensing fluid flow. The flow sensor includes an exterior, interior, a circuit board, and first and second ports. The first and second ports permit fluid to flow into and out of the interior. A Hall Effect Sensor in the interior detects the number of revolutions of an impeller. An electric coupler interfaces with the flow sensor and a transmitter for communication of the revolutions of the impeller to a controller. The controller determines the rate of fluid flow in a conduit. The controller issues a command signal to a component of a hydraulic system to alter the rate of fluid flow in the conduit.

The invention discloses an asymmetric coupling rigidity disturbance type MEMS modal localization accelerometer and a detection method. The accelerometer comprises an upper signal conversion layer and a lower glass substrate layer. The upper signal conversion layer comprises a sensitive mass block, a supporting structure and asymmetrical coupled resonator pairs which are symmetrically distributed. According to the asymmetric coupling resonator pair, a first type resonator and a second type resonator form a weak coupling system through electrostatic coupling, the first type resonator is fixed to a glass substrate layer through anchor points, the second type resonator is fixed to a sensitive mass block, and the first type resonator and the second type resonator meet the mass and rigidity asymmetric relation. When being subjected to the acceleration effect, the sensitive mass block generates micro displacement, changes the static coupling rigidity and triggers the modal localization effect, so that the amplitude ratio of the two resonators is changed, and acceleration measurement is realized by detecting the amplitude ratio change. By adopting the asymmetric structure, the sensitivity of the accelerometer is doubled compared with that of a symmetric structure, and meanwhile, the accelerometer has good linearity and anti-interference capability.

The invention discloses a vehicle-mounted CAN bus anti-interference communication system and method based on photocoupling, and the system comprises an anti-interference communication system frame, the anti-interference communication system frame comprises a CAN bus receiving and transmitting module, a photocoupling isolation module, and a signal processing and separating module, the CAN bus receiving and transmitting module is used for receiving and transmitting CAN bus signals, and the photocoupling isolation module is used for receiving and transmitting the CAN bus signals. The photoelectric coupling isolation module is used for realizing transparent conversion of data between an optical signal and an electric signal and realizing electrical isolation of a physical layer while maintaining the integrity of a CAN protocol, and the signal processing and separation module is used for constructing a cooperative processing mechanism of time sequence calibration, differential judgment, logic reconstruction and signal synthesis. According to the invention, based on a physical layer signal isolation mechanism of optoelectronic isolation, a bidirectional independent transmission path of a CAN bus TXD / RXD channel data stream is established, and TXD mapping data and CAN bus effective data in an RXD channel are accurately separated, so that the system reliability in an industrial-grade communication scene can be obviously improved.

The invention discloses a multi-stage coordinated scheduling method and system for a hydrogen-electricity coupling comprehensive energy system, and the method comprises the steps: solving an initial scheduling scheme according to a day-ahead scheduling model of the hydrogen-electricity coupling comprehensive energy system, the initial scheduling scheme comprises the unit output of a thermal power generation unit in the hydrogen-electricity coupling comprehensive energy system, the renewable energy grid-connected proportion of a renewable energy power station and the electricity and hydrogen purchasing amount of a hydrogen production center; monitoring the safety confidence of the hydrogen-electricity coupled comprehensive energy system within specified time after the hydrogen-electricity coupled comprehensive energy system executes the initial scheduling scheme, if the safety confidence is greater than a preset threshold value, ending and exiting, and otherwise, skipping to the next step; and an intra-day correction network based on an MAPPO algorithm is adopted to correct the day-ahead scheduling model, and a corrected scheduling scheme is issued to the hydrogen-electricity coupling integrated energy system for execution. According to the method, the economical efficiency, the safety and the calculation efficiency performance of the hydrogen-electricity coupling system in a complex and uncertain environment can be guaranteed.

The invention provides a medium and low voltage flexible direct current interconnection scheduling method, and relates to the technical field of power distribution network scheduling, and the method comprises the steps: carrying out the feature weight correction of a first fault judgment result and a second fault judgment result according to a transient feature quantity, and obtaining the corrected fault positioning information; specific fault equipment is determined according to the corrected fault positioning information, and a fault token containing the available capacity of the specific fault equipment is generated; and obtaining a dynamic capacity boundary of the thermoelectric coupling constraint of the specific fault equipment, constructing a dynamic scheduling optimization model, and performing optimization scheduling on the specific fault equipment according to the dynamic scheduling optimization model. According to the method, the fault information is obtained through coupling backstepping and spectral decomposition, weight correction is carried out in combination with the transient characteristics in the current limiting mode, the fault token containing the available capacity is generated and participates in scheduling, unavailable equipment can be eliminated in time or participated in derating, and the power supply continuity of key loads is guaranteed.

The invention discloses a test device and method for in-situ monitoring of hydrates by using thermal-electric coupling, and belongs to the technical field of experiments for simulating generation and decomposition of hydrates in laboratories. The device comprises a hydrate synthesis and decomposition system, a temperature control system, a pressure control system, a thermal-electric parameter measurement system, a gas collection system and a data acquisition and user monitoring system, wherein a multi-point temperature sensor, a resistivity measurement probe and a heat conductivity coefficient measurement probe are arranged in a reaction kettle cavity; in-situ and real-time monitoring of multiple physical property parameters such as temperature distribution, resistivity change and heat conductivity coefficient in the whole process of generation and decomposition of the hydrate sample can be realized. According to the invention, thermal-electric coupling monitoring can be realized under high-pressure and low-temperature conditions, and a high-precision means is provided for hydrate formation mechanism research and exploitation processes.

A manometric catheter probe includes a flexible printed circuit, one or more pressure sensor assemblies coupled to the flexible printed circuit along a length of the flexible printed circuit, and a first flexible sleeve. Each pressure sensor assembly includes a body. The body includes a central cavity configured to receive the flexible printed circuit and an annular recess of the body. Each pressure sensor assembly further includes a microelectromechanical systems (MEMS) sensor disposed in the annular recess, an electrical connector configured to electrically couple the MEMS sensor and the flexible printed circuit, and a first flexible sleeve disposed over the annular recess of the body. The first flexible sleeve includes a fluid configured to communicate pressure to the MEMS sensor, and a second sleeve is disposed over the pressure sensor assembly.

Techniques for supplying power to an electrical load include electrically coupling a power supply system to an electrical load. The power supply system includes a chemical energy sub-system including a fuel cell and a fuel storage assembly that stores a fuel, where the fuel cell is configured to generate a first electrical energy output at a first power output; an electrochemical energy sub-system including an energy storage device configured to generate a second electrical energy output at a second power output; and a power control unit electrically coupled to the chemical energy sub-system and the electrochemical energy sub-system and electrically coupled to the electrical load. The method includes operating the power control unit to provide the first electrical energy output or the second electrical energy output to the electrical load.

The invention relates to a laser arrangement comprising at least two edge-emitting laser ridges, each with an integrated active zone and an output coupling plane. The at least two edge-emitting laser ridges are spatially separated from one another and share a common, and in particular a single-piece, semiconductor layer sequence with a contact region. Each ridge has a contact terminal, particularly on a surface, for supplying charge carriers to the active zone. A support substrate with at least one contact region is electrically coupled and mechanically connected to the contact region of the common semiconductor layer sequence. Furthermore, a heating element is provided, which is applied to a surface consisting of one of the common semiconductor layer sequences and the support substrate, and comprises two contact terminals and a meandering conductor between the two contact terminals.

The invention discloses a solid-state battery cycle test method and test equipment, relates to the technical field of electrical variable measurement, and is used for improving the accuracy of evaluating the electrochemical performance of a solid-state battery material. According to the method, a test device determines a force-electricity coupling characteristic parameter of the interface constraint modulus based on electrochemical data and mechanical data of the solid-state battery in the cycle process, and then a modulus evolution curve of the interface constraint modulus along with the number of charge-discharge cycles is constructed; and by analyzing the sequential relationship between the derivative of the modulus evolution curve and the capacity fading, the failure reason is attributed to the interface pressure contact failure of the physical level before the macroscopic performance failure of the solid-state battery, so that the accuracy of evaluating the electrochemical performance of the solid-state battery material is improved.

Certain aspects of the present disclosure are directed towards techniques for power management. The techniques provide an optimal staggering delay time between transmission of enable signals to power switches coupled (e.g., electrically coupled) to logic circuits and a power source. The optimal staggering delay time may allow enabling or turning on of the power switches in a staggered, sequential fashion while reducing power up latency of the logic circuits.

A charging station is described. The charging station comprises: one or more first battery packs that are electrically coupled to one or more power sources; a memory; and a processor that is communicatively coupled to the memory. The processor is operable to determine whether a first state-of-charge of the one or more first battery packs is less than a threshold level; generate a first discharge request message when the first state-of-charge of the one or more first battery packs is less than the threshold level; broadcast the first discharge request message to one or more first vehicles within a geographical range; receive a first response message from the one or more first vehicles; and receive power from the one or more first vehicles based on the first response message.

A fire fighting vehicle includes an energy storage system coupled to the chassis and a charging assembly configured to interface with a charging plug. The energy storage system includes battery cells. The charging assembly includes a housing, a charging port disposed within the housing and electrically coupled to the battery cells, a retainer positioned proximate the charging port, a first actuator, and a second actuator. The charging port is configured to engage with a charging interface of the charging plug. The retainer is configured to engage with a retaining interface of the charging plug to secure the charging interface within the charging port. The first actuator is positioned to release the retaining interface from engagement with the retainer by repositioning the retaining interface into a release position. The second actuator is positioned to eject the charging plug from the charging assembly when the retaining interface is in the release position.

A method for operating a switching power converter to reduce ripple current magnitude includes (a) controlling duty cycle of a plurality power stages of the switching power converter to regulate at least one parameter of the switching power converter, each power stage including a respective power transformer, and (b) controlling an injection stage of the switching power converter to reduce voltage across leakage inductance of each power transformer, the injection stage including an injection transformer that is electrically coupled to a respective secondary winding of each power transformer.

Provided is a downhole device, a well system, and a method. The downhole device, in one aspect, includes an electromagnetic assembly, as well as a magnetic target positioned proximate the electromagnetic assembly, wherein one of the magnetic target or the electromagnetic assembly is coupled with a movable feature of the downhole device, the movable feature configured to move to physically couple or physically decouple the electromagnetic assembly and the magnetic target. The downhole device, according to this aspect, further includes a sensor electrically coupled to the electromagnetic assembly, the sensor configured to sense for a change in a DC power parameter powering the electromagnetic assembly as the electromagnetic assembly and magnetic target physically couple to or physically decouple from one another, the sensed change representative of a change of impedance within a coil of the electromagnetic assembly and employable to estimate the status or health of the downhole device.

An electric vehicle charger adapter is disclosed, comprising an incoming power connection point configured to be electrically coupled to an EV charger, an outgoing power connection point configured to be electrically coupled to an EV and a switch, coupled between the incoming power connection point and the outgoing power connection point; and a processor, coupled to the switch. The processor comprises a wireless communication interface and is configured to transition the switch between an open configuration and a closed configuration based on signals received by the wireless communication interface from a remote device. A method for charging an EV, for example using the electric vehicle charger adapter, is also disclosed.

The invention discloses a wind power and thermal power coupling hydrogen production system based on multi-source abandoned power consumption and a control method, and the system comprises a multi-source abandoned power access unit which is used for receiving and integrating the remaining electric quantity from thermal power peak regulation, the abandoned wind power and the off-peak electric quantity of a power grid; the input end of the wide-area self-adaptive electrolytic cell cluster is electrically connected with the multi-source electricity abandoning access unit, the wide-area self-adaptive electrolytic cell cluster is used for converting electric energy into hydrogen, and the wide-area self-adaptive electrolytic cell cluster comprises at least one proton exchange membrane electrolysis unit and at least one alkaline electrolysis unit; the power divider is arranged between the multi-source electricity abandoning access unit and the wide-area self-adaptive electrolytic cell cluster and is used for dynamically distributing thermal power peak regulation residual electric quantity, wind power electricity abandoning and power grid off-peak electric quantity to the proton exchange membrane electrolysis unit or the alkaline electrolysis unit according to the real-time power characteristics of each power supply; and the cooperative control platform is in communication connection with the power divider and the wide-area self-adaptive electrolytic cell cluster and is used for executing a cooperative control strategy. The invention aims to provide a hydrogen production solution which can adapt to multi-source electricity abandoning characteristics at the same time and considers wide load regulation and economical efficiency.

The invention discloses a magnetic-mechanical-electric coupling amplitude-change pole simulation method based on finite element analysis, and relates to the technical field of magnetoelectric antenna simulation. The magnetic-mechanical-electric coupling amplitude-change pole simulation method based on finite element analysis comprises the steps that parametric modeling is carried out, and a multi-physical field environment is imported; defining material attributes; solid mechanics, an electrostatic field and a magnetic field are coupled, and piezoelectric and piezomagnetic effects are started; dividing grids and configuring a solver; executing simulation calculation; and evaluating displacement and stress results and performing iterative optimization. According to the magnetic-mechanical-electric coupling amplitude-change pole simulation method based on finite element analysis, through multi-physics field coupling simulation, electric-mechanical-magnetic energy conversion is accurately simulated, the problem of traditional simulation distortion is solved, a high-performance amplitude-change pole capable of amplifying the amplitude of a permanent magnet sheet to 9 micrometers is guided to be designed, and the radiation capacity and reliability are remarkably improved.

A continuity detector for determining the continuity of a Unit Under Test (UUT). The detector comprises a housing defining an interior volume, an electronics package disposed within the interior volume defined by the housing assembly, a first test contact and a second test contact to interface with the electrical wire or harness assembly, a precision resistance standard disposed within the housing and electrically coupled to the electronics package, and a power source disposed within the housing assembly. The first test contact and the second test contact are external to the interior volume. The first test contact and the second test contact are electrically coupled to the electronics package. The electronics package comprising a resistance measurement device and a comparator circuit. The comparator circuit is configured to determine if the resistance of the UUT is greater than, less than, or equal to the resistance of the resistance standard.

The invention discloses a hydrogen-electricity coupling power market multi-mode collaborative optimization method and system, and relates to the technical field of power system automation and comprehensive energy management, and the method comprises the steps: collecting wind-solar new energy output prediction data and power market data in real time; a multi-income model integrating spot goods, auxiliary services, green certificates and carbon transactions is constructed, an equipment depreciation cost constraint is introduced, and an optimal income combination is calculated through mixed integer linear programming; based on the critical electricity price, rapid switching between a hydrogen production mode and a power generation mode is achieved, and an optimal scheduling instruction set and a collaborative transaction strategy are generated and automatically reported to the market; and carrying out full-life-cycle economical efficiency and safety verification on the operation strategy by using a digital twin simulation platform. According to the method, flexible switching and multi-market income maximization of the hydrogen-electricity coupling system are realized, the internal yield of a project is remarkably improved, the peak regulation and frequency modulation capability of a new energy power grid is enhanced, and a full-process automatic closed-loop system is constructed.

The invention relates to the technical field of coal-fired power generation and hydrogen energy, and discloses a matching and operation optimization method of a coal power-SOE coupling peak shaving system, which comprises the following steps: S1, establishing a matching benefit model of a coal-fired unit and a solid oxide electrolysis coupling system, the matching benefit model comprises a system cost model and a system income model; S2, constructing a collaborative peak regulation model, and performing SOEC capacity matching and operation optimization by adopting a bilevel planning method; s3, solving the upper layer model and the lower layer model by using a CPLEX solver; generating an optimal capacity configuration and coordinated operation optimization scheme of the coal-fired unit and the solid oxide electrolysis coupling system; and S4, monitoring the operation state of the system in real time, verifying the power balance constraint of the power grid and the hydrogen mass balance constraint, and updating lower-layer scheduling or feeding back to an upper layer for periodic correction according to an operation result. According to the coupling peak regulation system, electricity, heat and hydrogen multi-energy coupling operation is achieved, so that the peak regulation depth and the variable load rate of a coal-fired power plant are remarkably improved.

A method for operating a high voltage on-board power supply of a vehicle having a protective device for when physical contact with the high voltage potentials and a reference potential when charging a high voltage battery by a direct current charging station is provided. The protective device has a voltage measuring device and a protective switch. In one of the high voltage potentials, between the protective device and a direct current charging connection, a galvanically coupled DC / DC converter is arranged and the direct current charging station provides a charging voltage, which is lower than a nominal voltage of the high voltage battery. It is determined whether physical contact with the high volage potential, in which the DC / DC converter is arranged, occurs between the DC / DC converter and the direct current charging station, and this is used as a triggering criterion for controlling the protective circuit and / or a further protective circuit.

The invention relates to the technical field of radio frequency filters, in particular to a 13GXBAR filter design method based on a lithium niobate film. The Euler angle of the lithium niobate thin film is subjected to simulation setting in finite element simulation software, admittance responses under different cutting angles are obtained, an admittance curve with a large electromechanical coupling coefficient and complete stray mode suppression is obtained, the tangential angle is used for simulating an electrode material, the interdigital logarithm, the interdigital distance, the thin film thickness and the metallization ratio, and an admittance curve with a large electromechanical coupling coefficient and complete stray mode suppression is obtained. The method comprises the following steps of: constructing a plurality of resonators, obtaining impedance of each resonator, obtaining material parameters of the corresponding resonator, constructing a three-dimensional force-electricity coupling model of the lithium niobate resonator, carrying out layout design on the physical model in finite element simulation software through a field-circuit coupling method, and coupling force-electricity-sound multi-physical fields to obtain an S parameter curve of the designed XBAR filter; and whether the S parameter result is consistent with the target is verified, so that the forward design of full-simulation driving is realized.

Embodiments described herein are directed to a position sensor that includes a first receiver coil electrically coupled to a first multiplier to generate a first output, a second receiver coil electrically coupled to a second multiplier to generate a second output, a transmitter coil electrically coupled to an oscillator, the oscillator electrically coupled to a third multiplier to generate a third output, a phase-locked loop electrically coupled to the oscillator and the transmitter coil, a summing circuit configured to receive the first output and the second output and configured to generate a signal, a phase detector configured to receive the signal and the third output, the phase detector outputting a sense signal that is indicative of an angle of the motor position sensor, and a pair of op amps electrically coupled to the phase detector. The op amps configured to output an analog differential signal and a differential phase signal.

An integrated circuit (IC) device includes a device stack, a top contact structure, a bottom contact structure, a conductor, a via interconnect, and a back side power rail. The device stack includes a bottom semiconductor device, and a top semiconductor device stacked over the bottom semiconductor device along a thickness direction. The top contact structure is over and in electrical contact with a source / drain of the top semiconductor device. The bottom contact structure is under and in electrical contact with a source / drain of the bottom semiconductor device. The conductor is co-elevational with, and spaced from, the bottom contact structure. The via interconnect extends between and electrically couples the top contact structure and the conductor. The back side power rail is under and electrically coupled to the conductor.

In an embodiment a charging control method includes determining, by a charging controller, whether an electric coupling of a vehicle unit of a vehicle to a ground unit of a ground equipment is completed, checking, by the charging controller, whether DC charging or AC charging is performed based on a completion of the electric coupling and controlling, by the charging controller, an on-board charger for the AC charging or a junction box for the DC charging to provide a V2L discharge functionality based on a check.

The present disclosure provides a unidirectional write magnetoelectric coupled magnetic memory, comprising: a spin-orbit coupling layer; a magnetoelectric coupling layer unit, comprising a first magnetoelectric coupling layer and a second magnetoelectric coupling layer which are symmetrically formed on the upper and lower sides of the spin-orbit coupling layer, respectively; a free layer unit, comprising a first free layer and a second free layer which are symmetrically formed outside the first magnetoelectric coupling layer and the second magnetoelectric coupling layer, respectively; a barrier layer unit, comprising a first barrier layer and a second barrier layer which are symmetrically formed outside the first free layer and the second free layer, respectively; a reference layer unit, comprising a first reference layer and a second reference layer which are symmetrically formed outside the first barrier layer and the second barrier layer, respectively; a pinning layer unit, comprising a first pinning layer and a second pinning layer which are symmetrically formed outside the first reference layer and the second reference layer, respectively; a top electrode unit; a read electrode unit; and a write electrode unit. Further provided are a manufacturing method for the magnetic memory and an array connection circuit of the magnetic memory.

The invention discloses a hybrid electric vehicle engine and three-electric coupling matching method in a plateau environment. The method comprises the steps that the power demand strength of a vehicle under the current operation working condition is calculated; the actual output capacity value of the engine under the current operation working condition is calculated, the actual output capacity is compared with the plain nominal output capacity value under the corresponding rotating speed, the engine capacity attenuation characteristic quantity reflecting the plateau environment influence is obtained, and the energy supply capacity value, capable of being used for vehicle driving, of the engine under the current plateau environment is determined; according to the current charge state and the allowable working range of the power battery, determining the energy release capacity value of the power battery in the current state, and combining the maximum allowable output capacity value of the motor to construct the energy bearing capacity characteristic quantity of the three-electric system capable of participating in vehicle driving in the current working condition; and when it is judged that the energy supply and demand mismatch exists and the three-electric system cannot independently meet the energy demand of the whole vehicle, an engine starting control instruction is generated.