1577 results about "Electrical isolation" patented technology

The invention provides a multi-dimensional electrical equipment insulation analysis and evaluation method, and relates to the technical field of electrical equipment insulation online detection and intelligent diagnosis. According to the method, an electrically isolated direct current detection channel is constructed in a neutral point small resistance grounding system, controllable direct current detection signals are injected, micro direct current leakage response signals are collected, and after zero drift correction, temperature compensation and power frequency ripple suppression are carried out, layered attribution is carried out in combination with primary system topology and an equipment ledger, and a multi-dimensional response matrix is formed. According to the method, environment and working condition normalization is realized through factor rejection and robust pull-back, a mechanism model containing leakage channel equivalent parameters and path constraints is established, multi-working-condition data is fused to calculate equivalent insulation parameters and credibility indication quantity, and a multi-dimensional insulation representation vector is generated. And performing time sequence analysis on the representation vector, extracting degradation and abrupt change characteristics, outputting a health index and a risk level, and realizing quantitative evaluation and intelligent early warning of the insulation state.

The invention relates to microwave-free sensor technology with NV centers in diamond. In contrast to the prior art, the intensity of the pump radiation is not PWM-modulated, but monofrequency and sinusoidally modulated. Further measures, such as the use of semiconductor-based pump radiation sources and operation with an offset, prevent the formation of harmonics in the temporal intensity profile of the pump radiation irradiating the NV centers in the sensor element. This allows the sensor system to use the phase shift to determine measured values ​​of external physical parameters such as magnetic flux density, acceleration, temperature, etc., within a recognized and disclosed frequency range of the intensity modulation of the pump radiation, thereby minimizing the influence of noise from the pump radiation source. The galvanic isolation does not need to be compromised by cables from additional sensors.

The invention discloses a hybrid passivation back contact battery and a preparation method thereof, the battery comprises a silicon wafer, the silicon wafer comprises a first surface and a second surface which are oppositely arranged, the second surface comprises a first area and a second area, and the area of the first area is larger than that of the second area; the heterostructure comprises a first passivation layer and a first doping layer which are at least stacked on the first region; the first electrode structure is located on the first doping layer in the heterostructure; the first passivation structure comprises a tunneling oxide layer and a second doping layer which are stacked on the second region; the second electrode structure is located on the second doping layer in the first passivation structure, and the first electrode structure and the second electrode structure are electrically isolated through an isolation groove; and the second passivation structure is located on the first surface of the silicon wafer. The passivation effect of the HTBC battery is good, and the photoelectric conversion efficiency can be remarkably improved; and the preparation process of the battery is simple, few in process steps and low in equipment cost.

The present invention relates to the field of electronic devices of wireless communication systems. Disclosed is an ultra-wideband and high-protection-efficiency filtering energy selective surface, comprising one or more layers of reflecting surfaces; each reflecting surface is mainly composed of a plurality of metal sheets which are located on the same plane, have the same shape and are arranged in central symmetry; a gap for electrical isolation is formed between every two adjacent metal sheets; each gap is provided with a PIN diode; the anodes and cathodes of all the PIN diodes are arranged in a clockwise or counterclockwise direction; and all the gaps form an interconnected gap structure on the plane where the reflecting surface is located. The ultra-wideband and high-protection-efficiency filtering energy selective surface can be achieved by a first-order filtering energy selective surface unit or a second-order filtering energy selective surface unit. The filtering energy selective surface of the present invention has a small surface thickness and a simple structure, can achieve fast roll-off filtering for low-power signals, achieve an ultra-wide suppression stopband, and achieve ultra-wideband and high-efficiency protection for high-power electromagnetic waves.

The invention discloses an anti-interference resistance detection circuit board and system based on four-wire system measurement, and relates to the technical field of industrial automatic detection. Aiming at the problems of low measurement precision, weak interference resistance and limited channel expansion of a traditional two-wire system, a current loop and a voltage sampling loop which are independently and electrically isolated are adopted, and a lead resistance error is eliminated through Kelvin connection; an EMI filter, a photoelectric coupler and a double-layer shielding cable are integrated, so that the influence of electromagnetic interference and a ground loop is inhibited; a single circuit board supports the parallel connection of at least two measuring units, realizes the cascade connection of multiple boards by combining an EtherCAT bus, and supports 384 channels at most. The measuring error is smaller than or equal to + / -0.1%, the single-channel detection time is smaller than or equal to 10 ms, the requirements of high-density and high-beat scenes such as perovskite photovoltaic glass are met, the method is suitable for 100-100 Momega wide-range resistance measurement, the signal transmission error rate in the industrial strong electromagnetic environment is extremely low, and the detection precision and the system reliability are remarkably improved.

The invention belongs to the technical field of energy storage fire fighting, and particularly discloses an emergency fire fighting system and method for an immersed battery energy storage power station, and the system comprises a battery pack, an immersion liquid storage tank, a fire fighting liquid storage tank, a pumping system and a control system. The battery pack is composed of a plurality of stacked battery packaging units, and a temperature and smoke sensor array and a scattering nozzle are installed above a battery module in each battery packaging unit and used for monitoring fire behavior in real time and spraying fire fighting liquid. The immersion liquid storage tank is connected with the battery packaging unit through a pipeline and is used for battery heat dissipation and insulation protection; the fire-fighting liquid storage tank is connected to the scattering nozzle through a pipeline to provide emergency fire extinguishing support; the pumping system comprises an immersion liquid pump and a fire-fighting liquid pump; the control system is in linkage with the sensor and the pumping system, electrical isolation, immersion liquid emptying and fire-fighting liquid injection operation of a fault module are automatically triggered according to monitoring data, accurate positioning fire extinguishing is achieved, the influence on adjacent normal modules is reduced to the maximum extent, and safety and operation and maintenance efficiency are improved.

Provided are a charging system, an electrical isolation system, a control system, and a shockwave device. The charging system is provided with at least two electrical isolation circuits, thereby improving the frequency of sending charging control signals and further improving the frequency of charging a shockwave generation apparatus. The electrical isolation system can greatly improve the dielectric strength of the electrical isolation system, reduce a leakage current on the surface of a shockwave generator, and ensure the safety performance of the shockwave generator. The shockwave device can effectively monitor the discharge energy of a shockwave emitter, thereby improving treatment safety, controllability, and working efficiency.

The invention discloses a power device driver and a parameter correction method thereof, which are applied to the technical field of power device driving, and are characterized in that a data acquisition module acquires grid voltage and peak current of an IGBT (Insulated Gate Bipolar Translator) in the working process of the IGBT to obtain sampling data; the digital isolation chip realizes electrical isolation among the data acquisition module, the MCU and the grid voltage regulation module; the MCU calibrates the real-time junction temperature data based on the sampling data by using a preset junction temperature calibration formula and outputs calibrated junction temperature data; the gate driving chip outputs a gate voltage capable of driving the IGBT according to the control signal; the second-order short-circuit protection module sends an abnormal signal to the MCU when the IGBT is short-circuited, so that the MCU sends a grid voltage regulation trigger signal to the grid voltage regulation module; the grid voltage adjusting module responds to the grid voltage adjusting trigger signal and controls itself to reduce the grid voltage. Based on the power device driver and the parameter correction method thereof provided by the invention, the junction temperature monitoring precision and reliability are improved.

An electrical transmission safety system for connection of direct current (DC) power from a DC power source to a load comprises: a connection from the power source to the load, the connection comprising a positive terminal and a negative terminal; a first solid state switch electrically connected between the power source and one of the positive terminal and negative terminal; and a switch-control isolation block comprising a first optocoupler, the first optocoupler providing electrical isolation from the power source for generating a first isolated switch-control signal in response to a switch-control input signal, the switch-control isolation block connected to provide the first isolated switch-control signal to the first solid state switch to thereby control an ON or OFF conduction state of the first solid state switch and corresponding current flow between the power source and the load through the one of the positive terminal and negative terminal.

The invention provides an integrated circuit packaging system with an isolation structure. The system comprises an isolation barrier building assembly which divides a function module and a signal path into a plurality of isolation areas; the electrical performance test assembly is responsible for applying an electrical performance test signal of the integrated circuit at the input end of the integrated circuit, collecting an output signal of the integrated circuit at the output end, and analyzing the electrical performance test signal and the output signal to obtain a quality parameter of the electrical performance test signal; and the signal path adjustment component is responsible for providing adjustment suggestions for the signal path of the current integrated circuit according to the analysis result of the quality parameters. According to the invention, electrical isolation and physical protection are ensured; the signal quality and the system performance under the isolation structure are evaluated through analysis of the test signal and the output signal; providing an optimization suggestion according to a test result, and adjusting a signal path and an isolation barrier design; and the integrated circuit packaging system with the isolation structure is ensured to reach the optimal level in the aspects of electrical performance, signal integrity and reliability.

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

The invention discloses a high-temperature-resistant flame-retardant carbon fiber cable and an intelligent preparation method thereof, and relates to the technical field of power cables, and the cable is composed of a composite bearing core, a first / second electrical isolation belt, a stranded conductor, an annular composite bearing layer, a high-temperature-resistant main insulator and a low-smoke halogen-free outer sheath. The force bearing core is formed by bundling carbon fiber micro rods, elastic reset layers are arranged between the micro rods, micro-particle friction layers are formed on the outer surfaces of the micro rods, and a stable friction-rebound interface is constructed. A fire-resistant barrier, a phase change microcapsule filling layer and a fiber bragg grating can be arranged, and fire resistance, thermal peak suppression and on-line monitoring are considered. And closed-loop control of pultrusion, surface activation, coating and on-line thickness measurement / friction test is carried out in the manufacturing process. The cable can be operated at 200 DEG C for a long time and at 250 DEG C for a short time, the residual elongation is less than or equal to 0.10%, and light weight, high strength, high temperature resistance, low smoke and flame retardance are realized.

Various embodiments of the present disclosure are directed towards a method for forming a semiconductor structure. The method includes forming a first bond pad isolation structure within a substrate. A second bond pad isolation structure is formed with the substrate. The second bond pad isolation structure is disposed laterally between inner sidewalls of the first bond pad isolation structure. The first bond pad isolation structure and the second bond pad isolation structure are formed concurrently with one another. A bond pad is formed extending through the substrate. The bond pad comprises a conductive body overlying the second bond pad isolation structure and a conductive protrusion extending from the conductive body to below the substrate. The second bond pad isolation structure laterally wraps around the conductive protrusion.

The embodiment of the invention provides a transformer bushing oil extraction tool system and a control method and device thereof, and the system comprises a multi-degree-of-freedom flexible positioning module, a real-time data collection and feedback control module, an electrical isolation and insulation module, and an intelligent alarm system. Automatic operation of oil extraction of the transformer bushing in an electrified environment can be achieved, the accuracy, the sealing performance and the safety of the oil extraction process are ensured, and the efficiency and the reliability of equipment maintenance are improved. Wherein the flexible positioning module enables the oil taking module to be accurately in butt joint with an oil taking port, the data acquisition and feedback control module monitors and adjusts pressure and flow in real time, and the stability of oil taking is ensured; the electrical isolation module provides necessary insulation protection to avoid high-voltage risks; and the alarm system automatically gives an alarm and stops operation when abnormity occurs, so that multi-layer safety guarantee is provided for system operation.

The invention relates to microwave-free sensor technology with NV centers in diamond. In contrast to the prior art, the intensity of the pump radiation is not PWM-modulated, but monofrequency and sinusoidally modulated. Further measures, such as the use of semiconductor-based pump radiation sources and operation with an offset, prevent the formation of harmonics in the temporal intensity profile of the pump radiation irradiating the NV centers in the sensor element. This allows the sensor system to use the phase shift to determine measured values ​​of external physical parameters such as magnetic flux density, acceleration, temperature, etc., within a recognized and disclosed frequency range of the intensity modulation of the pump radiation, thereby minimizing the influence of noise from the pump radiation source. The galvanic isolation does not need to be compromised by cables from additional sensors.

The invention discloses a preparation method and a structure of a photonic integrated device, and the method comprises the steps: sequentially dividing a substrate into a front modulator region, a rear modulator region, a front grating region, a gain region and a rear grating region, and growing a first active layer after manufacturing a selected region epitaxial mask pattern in the gain region, the method comprises the following steps of: growing a first active layer in a front modulator region after mask etching operation, growing a second active layer in a front modulator region after mask etching operation, growing a third active layer in a grating region after mask etching operation, finally performing grating manufacturing, and completing manufacturing of a cladding layer, an electric contact layer, an inverted table shallow ridge waveguide structure, an electric isolation trench and an electrode. According to the method, integration of multiple materials is achieved through one-time selective area epitaxial growth and one-time butt joint growth, the material growth frequency is reduced, and the manufacturing cost is saved; the gain region and the rear modulator region realize forbidden band width offset through selective region epitaxial material growth, and multi-wavelength tuning and efficient modulation are realized through fluorescence wavelength difference design of each region, so that a solution can be provided for integration of a wide-wavelength tunable laser and a double-electro-absorption modulator.

The utility model is suitable for the technical field of main-grid-free back contact cells, and provides a main-grid-free back contact cell, a cell assembly and a photovoltaic system. The main-grid-free back contact battery comprises a main grid line area and a plurality of edge grid line areas, wherein the main grid line area is positioned between two edge grid line areas; the fine grid in the edge grid line area is provided with a plurality of first insulating glue and a plurality of first connecting structures, the first connecting structures electrically connect the fine grid with the welding strip, and the first insulating glue electrically isolates the fine grid from the welding strip; wherein the area of the single first insulation paste is larger than that of the single first connection structure. According to the main-grid-free back contact battery, the area of the first insulation paste in the edge grid line area is larger than the area of the first connection structure, so that larger electrical isolation is provided for the grid lines and the welding strips in the edge grid line area, the short circuit problem is prevented, and the effect of improving the stability of the main-grid-free back contact battery is achieved.

A bidirectional high voltage AC-DC converter includes a primary three-phase three-level T-type power factor correction circuit, a full-bridge switching circuit connected to the primary three-phase three-level T-type power factor correction circuit output, an isolated capacitor-inductor-inductor-capacitor (CLLC) resonant tank connected to the full-bridge switching circuit, a T-type full-bridge output topology circuit connected to the CLLC resonant circuit, and a controller that controls one or more of the components of the bidirectional isolated high voltage AC-DC converter. The primary three-phase three-level T-type power factor correction circuit and the secondary three-level circuit include a split DC-link bus with respective voltages that are actively controlled by the controller. The CLLC resonant converter circuit includes an isolation transformer that electrically isolates the primary side from the secondary side of the bidirectional isolated high voltage AC-DC converter. A control method includes synthesizing, via a modified space vector pulse width modulation (SVPWM) scheme or a variable-amplitude double-carrier sine-triangle PWM with capacitor bank middle point voltage control, one or more output voltages of the front end three-phase three-level T-type PFC circuit, wherein the modified SVPWM scheme is based, at least in part on a nearest four vectors technique.

The invention relates to the technical field of electric energy meter calibration, and provides an intelligent calibration method and system for an electric energy meter. The method comprises the steps that after calibration is triggered, a bus electric energy meter is switched to a bus-level electrical isolation scene through a switching relay; extracting a first group of bus-level metering values after injecting all-condition steady-state signals; comparing the theoretical values to calculate a first group of bus-level errors; judging whether to switch to a branch-level electrical isolation scene or not according to the error distribution characteristics; if switching is carried out, a multi-dimensional disturbance load combination is dynamically loaded on the K branch circuits through the program control load module, and a second group of bus level metering values are synchronously metered; and performing branch-level energy consumption error traceability calculation on the second group of values, and executing closed-loop calibration to solve the technical problems of low calibration precision and incapability of accurately reflecting error distribution caused by incapability of coping with a multi-dimensional disturbance load environment in real time in a traditional electric energy meter calibration process, so as to achieve the purposes of improving the accurate calibration capability of the electric energy meter in multiple scenes and improving the calibration accuracy of the electric energy meter in multiple scenes. And the equipment calibration time is shortened.

The invention relates to the technical field of air purification, and discloses a negative oxygen ion generator and a method thereof.The negative oxygen ion generator comprises an external shell used for providing installation positions for related parts; the power supply input module is mounted in the external shell, is internally provided with a filtering unit, and is used for receiving external direct current; the direct current and alternating current inversion module is electrically connected with the output end of the power supply input module, is internally provided with a switch assembly and is used for converting the direct current into high-frequency alternating current; a primary winding, a secondary winding and a feedback winding are arranged in the boosting transformer. A boosting transformer is arranged between a direct current and alternating current inversion module and a high-voltage double-voltage rectification module, so that the voltage is effectively boosted, more importantly, the magnetic field coupling characteristics of a primary winding and a secondary winding are utilized, reliable electrical isolation is constructed, and a physical path from a high-voltage side circuit to a low-voltage side circuit is blocked.

The invention relates to the field of fan control, in particular to a fan wired integrated control system. The control panel is provided with a plurality of cooling fans, the independent control box is electrically connected with the control panel through a cable, the control box comprises a multi-path RD signal processing module, a dial switch array, a state indication module, a fault output interface, a programmable speed regulation module and the like, and the control box is further provided with an RS485 communication interface and the like. A physical switch of the dial switch array correspondingly controls the state monitoring function of the cooling fan, the double-color LED array indicates the running state of the fan, and a fault output interface is uploaded to an upper computer through an interface circuit when the fan breaks down. Effective control and state monitoring of the fan are achieved, the state of the fan can be adjusted according to actual requirements, the effects of electrical isolation, rapid fault response and the like are achieved, meanwhile, the communication rate is adjustable, and the system adapts to different application scenes.

Provided is a traction power supply system for rail transit, specifically a power unit for rail transit, and a control method. Distinguished from the architecture of a conventional traction power supply system for rail transit, a modularization-based power unit main circuit and a control method therefor are provided. The power unit main circuit comprises a high-voltage switch module, high-voltage modules, high-frequency transformers, low-voltage modules and an intermediate direct-current module. On the basis of a modular design concept, electrical isolation between high and low voltages and level conversion are implemented, thereby effectively reducing the difficulty in insulation design of a system and also improving the degree of redundancy and maintainability of the system. Furthermore, with regard to the phenomenon of voltage unbalance of multiple cascaded modules caused by differences in device parameters, a voltage equalization start logic and a control method are provided to effectively resolve the phenomenon of voltage unbalance between the cascaded modules, thereby reducing the impact of starting currents and improving the reliability of the system.

The embodiment of the invention provides a vibration-sensing automatic power-off device for a large transformer. The vibration-sensing automatic power-off device comprises a shell, the extending end of the first conducting rod is fixed to the shell and extends into the shell, and the other end of the first conducting rod is located outside the shell and connected with the transformer. The leading-in end of the second conducting rod is led into the shell; the plurality of locking mechanisms are arranged on the inner wall of the shell; the acceleration monitoring unit is installed on the shell and used for monitoring the acceleration of the device and generating a corresponding monitoring signal. In a normal state, the second conducting rod is clamped by the locking mechanism, so that the first conducting rod and the second conducting rod are conducted; when an earthquake occurs, the central control unit triggers the circuit breaker to be disconnected, the locking mechanism relieves clamping of the second conducting rod, and dual protection of electrical isolation and mechanical breaking is formed. And after the earthquake, the locking mechanism automatically resets and recovers conduction. The automatic power-off device has the full-process response capability of earthquake real-time sensing and quick response disconnection and reset, effectively prevents potential safety hazards such as short circuit and fire caused by an earthquake, and improves the survivability of power equipment in a strong earthquake environment.

The invention provides a triaxial accelerometer based on a four-degree-of-freedom weak coupling resonator, the triaxial accelerometer comprises an upper-layer structure and a lower-layer structure, the upper layer is a micromechanical sensitive element constructed by taking silicon as a material, the lower layer is a glass base processed by a silicon dioxide material, and the glass base is used for providing mechanical support and electrical isolation functions. Wherein the micromechanical sensitive element has a signal conversion function; and the lower-layer glass base is formed by wet etching and metal sputtering processes and is used for signal output. On the basis of collaborative design of the orthogonally distributed resonance unit array and the mechanical amplification mechanism, electrostatic driving and amplitude ratio detection are combined, synchronous and accurate sensing of acceleration of the Y axis, the X axis and the Z axis is achieved through a single sensitive element, the technical limitation of a traditional single-axis detection mode is broken through, the complexity of a rear-end signal processing circuit is reduced, and the detection precision is improved. The device space utilization rate is improved.

The utility model relates to an MCU simulation debugger with high-voltage isolation protection. The MCU simulation debugger comprises a USB power supply communication circuit module, a first DC step-down circuit, a DC-DC power isolation module, a second DC step-down circuit, a main control chip minimum system, a burning code external storage FLASH control circuit, an off-line burning BURN key detection circuit, a JTAG simulation / IIC burning interface isolation module and a three-section dial switch. A dial switch state detection module; and a machine burning control interface. The JTAG simulation / IIC burning interface isolation module realizes 1500Vrms electrical isolation of a debugging board card and simulator equipment, online simulation debugging of resistance product firmware can be realized, and a software developer does not need to care about the electrical isolation condition of the debugging board card and only needs to concentrate on debugging codes; multi-interface and multi-level high-speed simulation and burning are supported, level switching of a debugging board card is rapidly achieved through a dial-up gear, and the level compatibility of the simulator is improved.

The invention discloses a capacitance method measuring device and method for the thickness of a lubricating oil film between mechanical friction pairs based on a dynamic correction model, and belongs to the technical field of electrical measurement. Wherein the point contact ball disc testing machine comprises a point contact friction pair formed by a conductive disc and a steel ball; the conductive disc is electrically isolated by arranging insulating rubber pads on the upper surface and the lower surface of the conductive disc, and the steel ball is electrically isolated by arranging an insulating ceramic ball bearing in a transmission mechanism where the servo motor is connected with the steel ball. The two independent servo motors respectively drive the steel ball and the conductive disc to rotate, so that test working conditions at different speeds can be realized. According to the invention, the capacitance distribution in the Hertz contact area can be effectively calculated, the problem of measurement errors caused by peripheral capacitance interference of the Hertz contact area in a traditional capacitance method is solved, and accurate measurement of the oil film thickness between common metal friction pairs in engineering is realized.

The invention provides an intelligent crust breaking and blanking system based on machine vision. The intelligent crust breaking and blanking system comprises an active detection module, an image acquisition module, an image processing and calculating module, a data communication module, a cell control machine, a high-temperature-resistant insulation structure and a cooling device, the active detection module forms a reference line in an aluminum electrolysis cell monitoring area; the image acquisition module is used for respectively acquiring image data of a motion state of a crust breaking hammer and a material falling process of a blanking port; the image processing and calculating module is used for carrying out preprocessing, feature extraction and calculation on the image to obtain a crust breaking depth parameter and blanking flow data; the data communication module transmits a processing result to the cell control machine, and the cell control machine adjusts the crust breaking set depth and optimizes the blanking interval according to the processing result; the high-temperature-resistant insulation structure carries out physical protection and electrical isolation on key modules, and the cooling device keeps the internal temperature stable and prevents the lens from being polluted. Therefore, the crust breaking depth and the blanking quantity control precision can be improved, the maintenance cost is reduced, and the adaptability to a high-temperature strong electric field environment is improved.

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 boost-buck and power flow control integrated transformer system. The transformer system comprises a transformer main body which receives the voltage of a three-phase power supply device and performs step-up or step-down processing on the voltage; and the phase angle adjusting device is magnetically connected with the transformer main body and is electrically isolated from the transformer main body, the phase angle adjusting device is used for adjusting the phase angle of the voltage subjected to the step-up or step-down processing of the transformer main body and outputting the voltage subjected to the phase angle adjustment to a power transmission line. By combining the power flow control function with the transformer, the occupied area of the whole set of equipment can be reduced, the number of control loops and the number of equipment can be reduced, the investment cost can be reduced, the anti-short-circuit capability of the transformer can be improved, the structural complexity can be reduced, and the voltage to ground of a tap switch can be reduced.

The invention discloses a packaging substrate with a temperature detection function, a power semiconductor module and a manufacturing method thereof, and the packaging substrate with the temperature detection function comprises an integrated ceramic insulating layer which is provided with a first surface and a second surface which are opposite to each other; the temperature sensor comprises a ceramic insulating layer, a sensor mounting groove, an independent temperature sensor chip, an insulating filling body and a three-dimensional interconnection structure, and is configured to lead an electric signal of the temperature sensor chip to an external bonding pad on the second surface or the side surface of the ceramic insulating layer, the packaging substrate has the advantages that high-precision and quick response measurement of junction temperature of a power chip can be achieved, temperature rise decoupling deviation is eliminated, excellent high-voltage electrical isolation reliability is ensured while direct thermal coupling is achieved, the dielectric breakdown risk is avoided, the manufacturing method is flexible, the reliability of a power semiconductor module is improved, and the manufacturing cost is reduced. The comprehensive cost is reduced, and the long-term stability of temperature monitoring can be ensured while the rapid and accurate electrothermal response characteristic of the sensing unit is ensured.