418 results about "Low impedance" patented technology

The invention discloses a circuit board printing control method and system based on signal transmission loss. And obtaining a target differential transmission line parameter and a circuit board lamination parameter. And establishing an electromagnetic simulation model, and simulating insertion loss, return loss and impedance discontinuous point distribution. The line width, the line spacing and the interlayer hollowed-out area of the differential transmission line are dynamically adjusted through the reinforcement learning model, the proportion of the line width to the shielding layer spacing is limited by a preset critical value, and the line spacing is configured based on the multiple relation of the shielding layer spacing. And a sectional optimization strategy is adopted for the corners of the transmission line. The ratio of the aperture to the diameter of the anti-pad is optimized, and impedance mutation is reduced. According to the method, the key parameters of the target differential transmission line and the circuit board lamination parameters are acquired, and the electromagnetic simulation model is combined with the multi-physical field coupling algorithm, so that the insertion loss, the return loss and the impedance discontinuous point distribution can be accurately simulated. The method improves the adjustment efficiency, guarantees the accuracy of an adjustment result, and effectively reduces the signal transmission loss.

An acoustic matching structure is used to increase the power radiated from a transducing element with a higher impedance into a surrounding acoustic medium with a lower acoustic impedance. The acoustic matching structure consists of a thin, substantially planar cavity bounded by a two end walls and a side wall. The end walls of the cavity are formed by a blocking plate wall and a transducing element wall separated by a short distance (less than one quarter of the wavelength of acoustic waves in the surrounding medium at the operating frequency). The end walls and side wall bound a cavity with diameter approximately equal to half of the wavelength of acoustic waves in the surrounding medium. In operation, a transducing element generates acoustic oscillations in the fluid in the cavity. The transducing element may be an actuator which generates motion of an end wall in a direction perpendicular to the plane of the cavity to excite acoustic oscillations in the fluid in the cavity, and the cavity geometry and resonant amplification increase the amplitude of the resulting pressure oscillation. The cavity side wall or end walls contain at least one aperture positioned away from the center of the cavity to allow pressure waves to propagate into the surrounding acoustic medium.

The invention relates to the technical field of radio frequency integrated circuits, in particular to a harmonic suppression power amplifier combining a matching network and a feed network, which comprises a transistor, an input matching module, an output matching module, a stabilizing module and a bias module, the input matching module comprises a first parallel resonance unit, the first parallel resonance unit is used for second harmonic suppression, the output matching module comprises a series resonance unit and a second parallel resonance unit, the series resonance unit is used for resonating at a second harmonic frequency and performing low-impedance grounding on the second harmonic, and the second parallel resonance unit is used for resonating at a second harmonic frequency and performing low-impedance grounding on the second harmonic. The second parallel resonance unit is used for resonating at a third harmonic frequency and forms a high-impedance open circuit for the third harmonic, the output matching module is coupled to a drain electrode of the transistor, and the bias module comprises a grid bias sub-module and a drain bias sub-module. The grid bias sub-module is coupled to a connection node of the input matching module and the grid of the transistor, the drain bias sub-module is coupled to the output matching module, and the bias voltage of the transistor is jointly determined by the grid bias sub-module and the drain bias sub-module. The power amplifier has the effect of improving the efficiency level of the power amplifier while realizing harmonic suppression optimization.

The invention discloses a low-porosity and low-impedance dry positive electrode of a solid-state battery and a preparation method of the low-porosity and low-impedance dry positive electrode. The dry positive electrode of the solid-state battery comprises a large-particle positive electrode active material, a small-particle positive electrode active material, a first conductive agent, a second conductive agent, a third conductive agent, a small-size sulfide solid electrolyte, a large-size sulfide solid electrolyte and a binder. All the components are mixed in a manner of size matching and step-by-step embedding. Size matching among multi-stage particles is introduced, so that the size of gaps among different components is reduced, and the porosity is reduced; the binding agent and part of the conductive agent are premixed to form a'binding-conductive double network ', and then the active material and the electrolyte are gradually embedded, so that the purpose of low impedance of the composite positive electrode is achieved. And finally, the rate capability and the cycling stability of the solid-state battery are improved.

The invention relates to the technical field of microelectronics, semiconductors and communication, and discloses a radio frequency switch chip, and the circuit structure of the radio frequency switch chip comprises a transformer type differential inductor T-L1, a transformer type differential inductor T-L2, a capacitor C1, an NMOS transistor M1, an NMOS transistor M2, a gate resistor RG1, and a gate resistor RG2. The radio frequency switch chip provided by the invention adopts a differential structure, so that the parasitic inductance effect of a grounding key and a wire during packaging and testing can be eliminated, and the insertion loss and the isolation performance are improved; compared with a single-end port, the lower impedance of the differential port is more beneficial to improving the power capacity of the switch; the differential structure allows the transformer type differential inductor to use differential signal characteristics, the equivalent quality factor of the inductor is improved, and the circuit performance is improved; the differential structure can improve the linearity of the circuit, especially the second-order intermodulation effect; the differential structure can be compatible with a modern silicon-based CMOS radio frequency system, and an additional balun is not needed for signal conversion.

The invention provides an intelligent lightning arrester for a line. The intelligent lightning arrester comprises a lightning arrester body and an intelligent control box, the lightning arrester body is used for providing a low-impedance grounding channel for overcurrent when overvoltage caused by lightning or switching operation occurs on a line, so that the overvoltage is limited below a safety level, subsequent electrical equipment is protected from being damaged, the lightning arrester body recovers to an insulation state after the overvoltage disappears, and normal operation of a power system is guaranteed. The intelligent control box comprises an embedded intelligent sensing module and a diagnosis module, and the embedded intelligent sensing module is used for collecting operation state parameters of the lightning arrester body in real time; and the diagnosis module is used for evaluating the insulation state of the lightning arrester body by adopting a partial discharge mode recognition model according to the operation state parameters of the lightning arrester body, and predicting the aging trend of a valve plate unit of the lightning arrester body by adopting a valve plate aging trend prediction model. The lightning arrester disclosed by the invention has the dual advantages of compact structure and high-performance protection.

The invention provides a two-stage current intensity adjusting method for an eye therapeutic apparatus, and the method comprises the steps: extracting the impedance effect intensity of a current at a macular center through recognizing the thickness of an impedance barrier layer corresponding to the current limiting degree of a high-impedance region, and combining with the actual penetration thickness, and obtaining the current penetration depth reduction proportion of the current penetration depth at the macular center; the current intensity imbalance degree of the coarse adjustment basic current intensity in the transition subarea is evaluated, and by obtaining the current intensity increase and decrease multiple of the fine adjustment compensation current intensity, the gradient difference between high impedance limitation and low impedance permeation is integrated, and the current intensity is compensated to balance the current intensity imbalance degree of the transition subarea; and updating the current output power level of each partition according to the fine adjustment compensation current intensity, and feeding back the current output power level to a therapeutic instrument circuit in real time to obtain uniform therapeutic intensity distribution so as to be matched with the decreasing proportion of impedance of impedance gradient distribution from high to low.

The invention belongs to the field of power device driving, particularly relates to the technical field of crosstalk suppression, and more particularly relates to a crosstalk suppression driving circuit. Through cooperative work of the driving module, the detection module, the buffering module and the clamping module, crosstalk is effectively suppressed while the switching speed is ensured. The driving module ensures normal switching action of the power device; the detection module converts the drain voltage change rate into a detection signal in real time, and recognizes the crosstalk risk in advance; the buffer module suppresses forward crosstalk by absorbing grid forward voltage spikes; the clamping module immediately conducts a low-impedance path from the grid electrode to the negative power supply when the detection signal exceeds a threshold value, and negative crosstalk is quickly eliminated. According to the design, the suppression circuit is only activated when the voltage change rate exceeds the standard, switching delay caused by a traditional fixed buffer circuit is avoided, accurate and rapid crosstalk suppression can be achieved, and finally the suppression effect and the system reliability are remarkably improved while the high-speed switching performance is maintained.

The invention discloses a GaN HEMT (High Electron Mobility Transistor) driving method for quantitative suppression of false triggering oscillation. The method comprises the following steps: calculating turn-off transient process time; establishing a false triggering oscillation equivalent circuit model, deducing an oscillation system characteristic equation, performing root locus analysis on the oscillation system characteristic equation, and delimiting a design range of RC parameters with the best oscillation suppression effect; detecting a turn-off signal of the GaN HEMT through a detection circuit, and outputting a trigger signal of which the length is equal to turn-off transient process time; a trigger signal is input into the driving circuit to form a low-impedance grid branch, so that the turn-off process of the GaN HEMT is accelerated; and in response to completion of turn-off of the GaN HEMT, the trigger signal is controlled to drop to a low level, an RC buffer circuit is formed, and false trigger oscillation after the device is turned off is quantitatively suppressed. According to the invention, acceleration of the turn-off process of the GaN HEMT is realized, false trigger oscillation is quantitatively suppressed, the turn-off speed of the device is not influenced, and the gate impedance is reduced in the turn-off process of the device.

The invention relates to the technical field of energy storage, in particular to a network construction type energy storage power balance control method and system based on a hierarchical collaboration strategy. According to the invention, a three-level layered cooperative control architecture including a bottom unit control layer, a middle region coordination layer and a top system optimization layer is introduced, and the bottom unit control layer establishes a quick-response unit-level local control mechanism by collecting power output deviation and voltage fluctuation of an energy storage unit in real time; the middle region coordination layer carries out coordination correction on power instructions among a plurality of energy storage units on the basis of comprehensively considering a line impedance difference coefficient and a region load change rate, and the top system optimization layer carries out global optimization decision by combining a system total power demand, an energy storage residual capacity difference and a power grid frequency deviation. Therefore, dynamic power distribution and voltage stability control among the energy storage units can be realized under different operation conditions, and the problem of failure of traditional droop control under the condition of low impedance difference is remarkably improved.

A Quantum Transceiver Antenna (QTA) is described which is a scalable, thin-film, bi-synchronous, multifrequency resonance antenna, made up of a layered matrix of antenna pixels of uniform size and shape, with voids and nulls in its pattern. On the QTA, electromagnetic signals gain coherence as toroidal geometries, that function as tunable, electromagnetic lenses, to simultaneously resolve and concentrate gain in the full spectrum of radio frequency signals. QTA transceives both particles and waves, and operates using quantum principles, including quantum tunneling whereby solid materials appear invisible, enabling non-line of sight communications, imaging, detection, Q-Tricity, immunity to multipath interference, and ground planes. One QTA replaces disparate antennas in a cell phone / electronic device and operates wirelessly with space-based platforms and terrestrial networks, plug and play, with low impedance, less power, at magnitudes of gain only possible using quantum principles. QTA is frequency dynamic providing mesh networks, IOT, Edge, AI connectivity, and emergency response interoperability solutions.

The invention discloses an impedance matching plate, an impedance matching system and an impedance matching method, and relates to the technical field of electronic engineering, the impedance matching plate comprises a control module and a series resistance module, the series resistance module comprises a plurality of resistor gating modules connected in series and a first switching device, the resistor gating modules are respectively arranged on different target resistor units, and the first switching device is connected with the control module. Each resistor gating module comprises resistors with different resistance values and a second switching device which are connected in parallel, and the control module receives a resistance value adjusting instruction containing a target resistance value and generates a control signal according to a resistance value setting field in the resistance value adjusting instruction; the series resistance module conducts the target resistance gating module connected with the first switching device corresponding to the target resistance unit according to the control signal, and conducts the resistor corresponding to the second switching device in the target resistance gating module to generate a target resistance value, so that the problems that the large-range resistance adjustment cannot be realized and the impedance matching efficiency is low can be solved; the technical effects of adjusting the resistance in a large range and improving the impedance matching efficiency are achieved.

Technologies for impedance matching networks for qubits are disclosed. In one illustrative embodiment, an impedance matching network matches a 50 Ohm transmission line to a spin qubit with a state-dependent resistance of 100 kiloohms to 105 kiloohms. The illustrative impedance matching network is tunable, allowing the impedance transformation ratio to be changed without significantly changing the matching frequency of the impedance matching network. In some embodiments, the impedance matching network matches a 50 Ohm transmission line to a lower-resistance state of a qubit. In other embodiments, the impedance matching network matches a 50 Ohm transmission line to an impedance value in between a lower-resistance state and a higher-resistance state of a qubit.

The present disclosure relates to a signal hub incorporating a cooling system for managing heat dissipation in compact electronic devices. The cooling system addresses airflow impedance challenges as the hub's volume decreases, which can inhibit heat transfer and create hotspots. Impedance-reducing elements, such as a rounded top shell profile and flow depression, direct airflow efficiently across a top cooling plate. The antenna carrier contours to the top shell, supporting antennas electrically coupled to the top cooling plate for RF shielding and heat dissipation. A fan in the middle cooling plate creates a vacuum force, drawing air through an ambient air gap, while an exhaust fin directs airflow away from the bottom shell, preventing particle buildup. A BTB shield provides EMI protection and thermal management, and the bottom cooling plate enhances cooling efficiency, ensuring optimal performance and reliability in reduced volume settings.

The invention relates to the technical field of microwave devices, in particular to a circular coaxial filter for annular micro-discharge verification and a preparation method of the circular coaxial filter. Comprising a filter, a coaxial stepped impedance structure is arranged in the filter, and the coaxial stepped impedance structure comprises a plurality of high-impedance structures arranged in series and a plurality of low-impedance structures arranged between the adjacent high-impedance structures at intervals; the input port, the output port and the low-impedance structure of the filter are all filled with polymer dielectric materials so as to form polymer rings through curing. The polymer ring in the middle of the filter is provided with an annular discharge gap to form a sensitive area; circumferential continuous groove arrays are formed in the two side walls of the annular discharge gap. Through groove treatment, the PTFE micro-discharge threshold value is increased to 700 W, the PI micro-discharge threshold value is increased to be larger than 2000 W, and the problems that the SEY of PTFE and PI polymers is high, the micro-discharge threshold value is low, and the micro-discharge risk is remarkably increased are solved.

A circuit breaker protects an electrical low-voltage circuit. The circuit breaker has a housing with first and second connections on the mains side and first and second connections on the load side, and an isolating contact unit connected to an electronic interrupting unit. The isolating contact unit can be switched by opening contacts to prevent current flow or by closing contacts for current flow in the low-voltage circuit. The electronic interrupting unit is switched by semiconductor-based switching elements into a high-impedance state for preventing the current flow or into a low-impedance state of the switching elements for the current flow in the low-voltage circuit. A current sensor determines the level of the current of the low-voltage circuit. A controller is connected to the current sensor, the isolating contact unit and the electronic interrupt unit, such that a first measuring impedance is provided between the first and the second load-side connection.

The invention belongs to the field of semiconductor devices, provides a gallium nitride high-electron-mobility transistor integrated with a Schottky diode and a preparation method of the gallium nitride high-electron-mobility transistor, and aims to solve the problem that a conventional gallium nitride high-electron-mobility transistor (GaN HEMT) lacks a body diode. According to the invention, monolithic integration of the SBD and the GaN HEMT is realized through structural design, a low-impedance path is provided for reverse current, and the integration mode not only retains the original high performance characteristic of a GaN device, but also additionally endows the GaN device with reverse conduction and reverse recovery capabilities; moreover, through the structural design, the SBD can be synchronously completed on the basis of the existing GaN HEMT process, a special process or new equipment is not needed, and the cost is effectively controlled while the performance improvement is ensured; compared with an external interconnection diode scheme, parasitic inductance caused by lead bonding is eliminated, the voltage overshoot and ringing phenomena in the switching process are remarkably reduced, high-frequency switching application is facilitated, and switching loss can be greatly reduced.

The invention relates to the technical field of cable detection, and discloses a cable DC resistance detection and material identification method and system, and the method comprises the steps: constructing a four-wire system low-impedance electrical connection of a cable sample, compensating and correcting the path measurement precision through contact resistance, and obtaining an optimized electrical connection; monitoring a load state and performing closed-loop regulation on load impedance to obtain high-stability direct current; performing high-precision differential signal conditioning on the original voltage signal to obtain purified voltage data; deriving an initial resistance measurement value based on the purification voltage and the high-stability direct current, and performing system error compensation calibration on the initial resistance measurement value through a reference resistance comparison mechanism to obtain a calibrated direct current resistance value; obtaining material identification reference data according to a pre-stored mapping relation between the material and the resistance value in a material resistance database; the range attribution of the calibration direct-current resistance value in the material identification reference data is judged, and the material type is identified; according to the invention, the efficiency of cable DC resistance detection and material identification can be improved.

Circuits and apparatus for delivering a constant-current pulse with stability compensation into low impedance pyrotechnic loads are disclosed. One apparatus includes a power switch circuit including a high side connectable to an external device and for outputting current to the external device, a current sense circuit connected to the power switch circuit and for monitoring and limiting an amount of the current being output by the power switch circuit, a compensation circuit connected between the current sense circuit and the high side of the power switch circuit. The compensation circuit includes circuitry to provide gain and phase margin over a frequency range that provides stability in the current being output by the power switch circuit over a range of temperatures, input voltages, load impedances, and harness lengths. Systems that include the apparatus and / or perform the operations of the apparatus are also disclosed.

This invention discloses a dry bonding method for positive electrode materials and solid electrolyte layers in solid-state batteries. The method first involves dry mixing and pre-pressing positive electrode active material powder, solid electrolyte powder, and conductive agent powder to form a positive electrode composite material preform. Subsequently, the surface of the solid electrolyte layer is activated to increase its surface energy. A key step is to apply longitudinal vibration at a specific frequency and amplitude to the preform and the activated solid electrolyte layer for resonant acoustic interface coupling treatment, causing microscopic rearrangement and initial meshing of interface particles. This invention is solvent-free throughout the process. Through the synergistic effect of vibration and hot pressing, a stable interface with tight contact, strong bonding, and low impedance is constructed at the microscale, effectively solving problems such as poor interface contact, easy peeling, or performance degradation caused by solvent residue in existing dry and wet processes. It is particularly suitable for high-activity solid-state battery systems.

The invention discloses an overload protection method for an audio power amplifier, and relates to the field of audio power amplifiers. According to the invention, the instantaneous output amplitude signal of the power amplifier is divided by the preset overload threshold impedance to obtain the reference current dynamically changing along with the signal, and the actual output current is compared with the reference current in real time, so that the protection criterion is converted from a fixed current threshold to an adaptive impedance threshold; therefore, real-time identification and turn-off of a low-impedance abnormal load are realized, and normal output of a high-peak-factor audio signal is compatible.

This application provides an electric motor, an electric propulsion device, and an aircraft. The electric motor includes: a stator having a cavity; a rotor rotatably connected to the stator via a shaft; and the rotor being insulated from the stator; a conductive component disposed within the cavity, one end of the conductive component being conductively connected to the shaft, and the other end extending to the outside of the electric motor. The electric motor of this application, by incorporating the conductive component, creates a complete low-impedance electrical path between the shaft and the conductive component, allowing current that might be input into the electric motor via the rotor hub to be output to the outside of the electric motor, thus improving the electrical protection performance of the electric motor.

The invention provides a carrier communication system applied to a cascaded H-bridge converter, and belongs to a carrier communication technology in the field of electrical engineering. The carrier communication system is composed of a communication master node and N communication slave nodes, each communication slave node comprises a high-frequency noise filter, a coupling coil, a slave node modulation circuit and a slave node demodulation circuit, and the communication master node comprises a master node signal coupling loop, a master node modulation circuit and a master node demodulation circuit. By means of the structure, a low-impedance communication signal channel is constructed on the cascade output side through the main node signal coupling loop, and an annular carrier channel is constructed by the high-frequency noise filter and the coupling coil of each communication slave node, the main node signal coupling loop in the communication main node and the cascade cables between the H bridges. According to the invention, the signal-to-noise ratio of the carrier channel is improved, the communication reliability is ensured, and the power line carrier communication mode can be applied to the cascaded H-bridge converter.

The invention relates to a driving circuit and method with wide-range adjustment and high turn-on rate, and relates to the technical field of power semiconductor device driving. The circuit comprises an energy storage capacitor, first to fourth MOS transistors, first to third DC power supplies, a charging resistor and a first diode. Wherein the energy storage capacitor is connected to the third MOS tube through the charging resistor to form an adjustable charging loop with the second direct-current power supply; meanwhile, a low-impedance discharging path connected with the charging resistor in parallel is formed through the first diode and the second MOS tube; the first direct-current power supply provides steady-state grid voltage, and the third direct-current power supply and the fourth MOS tube form a turn-off loop. The invention has the following beneficial effects: the turn-on rate can be continuously set in a wide range by adjusting the voltage of the second direct-current power supply; and the low-impedance discharge path can provide extremely high transient driving current to realize high-speed turn-on.

The application provides a pad structure in a PCB and a method for optimizing the impedance of a pad in a PCB, and relates to the technical field of circuit board design. The pad structure comprises: a target pad formed on the PCB; a first transmission line electrically connected to the target pad, the line width of the first transmission line being smaller than the width of the target pad; a second transmission line electrically connected to the first transmission line, the line width of the second transmission line being smaller than the width of the target pad; and a third transmission line electrically connected to the second transmission line, the line width of the third transmission line being larger than the line width of the second transmission line. By setting the line widths of the first transmission line and the second transmission line to be smaller than the width of the target pad, a high-impedance thin line section is formed, and by utilizing the high characteristic impedance characteristic of the high-impedance thin line section, the capacitive low impedance of the wide pad itself can be effectively offset, so that the overall impedance of the pad area is improved without increasing the cost and process difficulty.

The application provides a power system stability analysis method based on impedance measurement data, comprising determining that the current analysis condition is a condition corresponding to an equivalent circuit diagram based on a converter topology structure diagram, wherein a disturbance voltage source is in series or a disturbance current source is in parallel; under the current analysis condition, disturbance voltage components and disturbance current components generated on the converter side are obtained to obtain converter impedance measurement data carrying amplitudes and phase angles at several frequency points, and disturbance voltage components and disturbance current components generated on the power grid side are obtained to obtain power grid equivalent impedance measurement data carrying amplitudes and phase angles at several frequency points; the converter impedance measurement data and the power grid equivalent impedance measurement data at the same frequency point are compared, and according to each comparison result, the risk of oscillation instability of the power system is judged. The application is implemented to reduce the complexity of impedance measurement operation, thereby improving the analysis accuracy.

In order to solve the problem that an existing bipolar battery adopting liquid electrolyte has the risk of internal short circuit, the invention provides a composite current collector, the composite current collector comprises a base film, a first conducting layer and a second conducting layer, the base film is a polymeric film, the base film comprises a middle area and an edge packaging area, and the edge packaging area surrounds the periphery of the middle area; the first conductive layer covers the surface of one side of the middle area, and the second conductive layer covers the surface of the other side of the middle area; in the initial state, the porosity of the middle area is larger than that of the edge packaging area, at least part of pores of the middle area are through holes, and the porosity of the edge packaging area is smaller than 5%. Meanwhile, the invention also discloses a bipolar pole piece and a bipolar battery comprising the composite current collector. According to the invention, the risk of internal short circuit is effectively reduced on the premise of ensuring low impedance, and the bipolar battery with high energy density, low impedance and high safety is obtained.

The utility model discloses a battery pack circuit breaking unit with grounding structure, including insulating casing, a plurality of electric components of setting in insulating casing, PCB board and grounding structure, PCB board is installed on insulating casing, and a plurality of electric components are electrically connected in PCB board, grounding structure includes conducting row, and conducting row is installed on insulating casing, and one end of conducting row is electrically connected in common ground on PCB board, and its other end is set as the lead-out end for the contact with the metal shell of external device. The utility model discloses setting the grounding structure containing conducting row, constructs low impedance ground discharge path for PCB board and electric component, can effectively shield external noise, reduce the influence of electromagnetic interference to voltage sampling signal, and prevent high voltage surge and electrostatic damage chip on PCB board, improve the electromagnetic compatibility and work reliability of battery pack circuit breaking unit, guarantee vehicle dynamic control signal stability.

The invention discloses a differential derivative structure circuit based on three-coupling transformation and an amplifier, and relates to the technical field of amplification circuit design. The differential derivative structure circuit comprises a three-coupling inductance network and N output parts. Through a three-coupling transformation mode, power supply of a main amplifier tube and an auxiliary amplifier tube in a differential derivative structure formed by connecting MOS tubes in parallel is integrated into an inductance matching network, so that homologous coupling of the main amplifier tube and the auxiliary amplifier tube on a radio frequency signal path is realized, physical isolation and independent bias control are also realized on a direct current path, and the power supply efficiency is improved. Therefore, a resistor does not need to be used, excessive use of a capacitor is avoided, loss caused by self impedance of the capacitor and ground parasitic capacitance loss are reduced, gain is greatly improved, extra area occupation caused by the capacitor and the resistor is effectively inhibited, and thermal noise introduced by the resistor is eliminated by utilizing the characteristic of low impedance of inductive coupling. Therefore, post-stage noise is effectively suppressed, and the noise coefficient is reduced.

This invention discloses a compact modular high-power thyristor converter with bypass, relating to the field of high-power converter systems for nuclear fusion devices. The bypass module is built into the converter cabinet and directly connected in parallel with the converter's DC positive and negative buses, forming the shortest low-impedance energy discharge path to achieve microsecond-level fault current transfer, protecting the thyristors and superconducting magnets. A dual AC bus with a 180° phase difference is introduced at the bottom, and the thyristors in the same phase upper and lower bridge arms are concentrated along the height, connected to fast-acting fuses on the busbar via long and short aluminum arc-shaped flexible connections, causing the bridge arm currents to cancel each other out. The theoretical magnetic flux density of the cabinet is zero, significantly reducing eddy current losses. The cooling water circuit connects the thyristor array and the bypass module in series, sharing a single circuit, simplifying the cooling water circuit design. The buffer circuit is arranged adjacent to the DC bus to suppress voltage and current surges. A non-magnetic steel frame with an openable heat dissipation door results in a small footprint, easy expansion and modification, and low cost.