An inductively coupled impulse current generation device and method

Abstract

The application relates to an inductive coupling-based impulse current generating device and method, which generates impulse current through electromagnetic induction principle and comprises a primary drive module for energy input, a magnetic coupling core module for magnetic energy conversion, a secondary induction module for current output and a waveform regulation module for waveform regulation. The secondary current waveform is collected in real time, the wavefront time, the half-peak time and the secondary impulse current peak value are calculated based on an optimization formula and compared with set values, if the waveform parameters or the current peak value deviate more than the set threshold value, the waveform regulation module and the correction coefficient are adjusted. Compared with the prior art, the application can realize impulse current output and high-frequency lightning current transient characteristic simulation, and provide high-precision and high-efficiency test technical support for lightning protection performance verification of power equipment.

Description

Technical Field

[0001] This invention relates to the field of high voltage testing equipment technology, and in particular to a method for generating impulse current by inductive coupling on a closed-loop conductor based on a fusion multi-parameter correction model. Background Technology

[0002] Impulse current generators, as core equipment simulating transient high-current scenarios such as lightning strikes and short circuits, are widely used in the field of lightning protection testing for power equipment. Traditional impulse current generators are based on the principle of "capacitor energy storage-synchronous discharge," relying on an energy storage unit composed of numerous high-voltage capacitors. While they can achieve basic impulse current output, they suffer from the following key technical defects due to limitations in their underlying technology: 1) Insufficient accuracy of energy conversion model: Traditional technology has not established a quantitative formula relationship between key parameters such as magnetic coupling coefficient and loop loss and impulse current output. It only selects coil turns ratio and magnetic core parameters by empirical values, resulting in a current peak calculation error of ≥5%, which cannot meet the requirements of high-precision testing (such as the impulse impedance detection of grounding device requires an error of ≤3%). In addition, it does not consider the influence of magnetic core permeability temperature drift and coil parasitic parameters on energy conversion efficiency, and the actual output current deviates significantly from the theoretical value.

[0003] 2) Poor flexibility of waveform control algorithms: Traditional technologies rely on replacing fixed-value resistors / inductors to adjust wavefront time and half-peak time, failing to develop dynamic control algorithms based on mathematical formulas. The wavefront time adjustment formula only considers the linear relationship between inductance and resistance, ignoring parameter drift caused by the inductor's temperature coefficient (e.g., a 10°C change in ambient temperature results in an inductor value deviation ≥2%). The half-peak time calculation does not correct for the nonlinear characteristics of the damping resistor, leading to waveform adjustment deviations ≥8%. This makes it unsuitable for the refined waveform parameter requirements of different devices (e.g., surge arrester testing requires a 2μs wavefront time and a 10μs half-peak time, while grounding device testing requires a 20μs wavefront time and a 350μs half-peak time).

[0004] 3) Weak system error control capability: Traditional devices only use the basic formula of "the ratio of the difference between the measured value and the set value" to calculate test error, without introducing system error compensation items such as changes in ambient temperature and load impedance. In field mobile testing (ambient temperature fluctuates from -20℃ to 60℃, and load impedance changes with the test object), the overall test error often exceeds 5%, which does not meet the accuracy requirements of the industry standard for impulse current testing equipment.

[0005] 4) Lack of quantitative support for heat dissipation design: Traditional device heat dissipation design relies on empirical water cooling structures and does not derive mathematical formulas for coil temperature rise and discharge parameters (such as effective current value and discharge cycle). It is impossible to accurately determine heat dissipation requirements, resulting in over-design (increasing equipment size) or insufficient heat dissipation (continuous discharge ≤150 times / hour) in some scenarios, making it difficult to adapt to test scenarios without external water cooling conditions.

[0006] In existing technologies, although there are solutions to improve the performance of traditional technologies by optimizing capacitor arrangement and improving trigger circuits, none of them deviate from the core logic of "capacitor energy storage" and do not optimize the formula model and control algorithm, thus failing to fundamentally solve the aforementioned problems of accuracy, flexibility and adaptability. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of traditional impulse current generators in terms of formula model accuracy, waveform control flexibility, system error control and heat dissipation design, and to provide an impulse current generation method based on inductive coupling.

[0008] The objective of this invention can be achieved through the following technical solutions: As a first aspect of the present invention, an impulse current generating device based on inductive coupling is provided. The impulse current generating device generates impulse current through the principle of electromagnetic induction and includes: a primary drive module for energy input, a magnetic coupling core module for magnetic energy conversion, a secondary induction module for current output, and a waveform control module for waveform regulation.

[0009] As a preferred technical solution, the primary drive module includes a low-voltage energy storage capacitor, a SiC fast switch, and a primary coil; the ratio of the primary current peak value to the primary current rise time is used as the primary coil current change rate.

[0010] As a preferred technical solution, the magnetic coupling core module adopts a nanocrystalline alloy ring-shaped closed magnetic core, and the energy storage of the magnetic core satisfies the formula: in, For energy storage of magnetic cores, The working magnetic field strength of the magnetic core. For the core volume, The number of turns of the primary coil. This represents the length of the magnetic core's magnetic circuit.

[0011] As a preferred technical solution, the waveform control module includes an adjustable inductor, a damping resistor, and a PLC control system; the waveform control satisfies the following algorithm formula: Wavefront time adjustment formula: in, For wavefront time, For waveform correction coefficients, The equivalent inductance of the secondary circuit, The inherent inductance of the secondary coil, It is an adjustable inductor; Half-peak time adjustment formula: in, Half-peak time, For secondary circuit parasitic capacitance, The total resistance of the secondary circuit. It is a damping resistor.

[0012] As a preferred technical solution, the impulse current generating device satisfies the following formula during the impulse current generation process: in, This represents the peak value of the secondary inrush current. The total resistance of the secondary circuit includes the coil resistance, load resistance, and contact resistance. For secondary induced electromotive force: in, The induced electromotive force is for the secondary coil. k is the magnetic coupling coefficient. The core permeability, This is the effective cross-sectional area of ​​the magnetic core. The number of turns of the primary coil. The number of turns of the secondary coil. The length of the magnetic core circuit. This represents the rate of change of the primary coil current.

[0013] As a preferred technical solution, the inrush current generating device optimizes heat dissipation through the following coil temperature rise formula: in, For coil temperature rise, The effective value of the coil current. The DC resistance of the coil, For the discharge cycle, Let be the specific heat capacity of copper. The quality of the coil.

[0014] As a second aspect of the present invention, a method for generating impulse current based on inductive coupling is provided, the method being based on the impulse current generating device based on inductive coupling as described above, the steps including: Real-time acquisition of secondary current waveform; Calculate the wavefront time, half-peak time, and peak value of the secondary impulse current, and compare them with the set values; If the peak value of the secondary impact current deviates from the set value by more than the preset range, the primary current change rate is corrected, and the circuit energy transmission efficiency coefficient is adjusted at the same time. If the deviation waveform parameter deviates from the set value by more than the preset range, the module parameter in the waveform control module is adjusted, and the correction coefficient is adjusted. After adjustment, the waveform is collected again to form a closed-loop control.

[0015] As a preferred technical solution, the wavefront time calculation adjustment is as follows: in, For wavefront time; This is the waveform correction factor; The equivalent inductance of the secondary circuit includes the inherent inductance of the secondary coil and the adjustable inductance; This is the inductor temperature compensation coefficient; The total resistance of the secondary circuit; If the wavefront time deviates from the set value by more than the preset range, the adjustable inductor is adjusted to simultaneously correct the inductor temperature compensation coefficient.

[0016] As a preferred technical solution, the half-peak time calculation adjustment is as follows: in, Half-peak time; This is the damping nonlinearity correction coefficient; The equivalent inductance of the secondary circuit includes the inherent inductance of the secondary coil and the adjustable inductance; This is the parasitic capacitance of the secondary circuit; For damping resistors; The total resistance of the secondary circuit; If half-peak time If the deviation from the set value is greater than the preset range, the damping resistor is adjusted to simultaneously correct the damping nonlinearity correction coefficient.

[0017] As a preferred technical solution, the peak impact current calculation and adjustment are as follows: in, This represents the peak value of the secondary inrush current. This is the transmission efficiency coefficient; The total resistance of the secondary circuit; This is the secondary induced electromotive force; is the magnetic coupling coefficient; The magnetic permeability of the magnetic core; This represents the effective cross-sectional area of ​​the magnetic core. This refers to the number of turns in the primary coil. This refers to the number of turns in the secondary coil. The length of the magnetic core's magnetic circuit; The rate of change of the primary coil current; If the peak value of the secondary impact current deviates from the set value by more than the preset range, the primary current change rate is corrected, and the circuit energy transmission efficiency coefficient is adjusted synchronously.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1) The inductive coupling-based impulse current generation technology proposed in this invention constructs an energy conversion device based on the law of electromagnetic induction, which combines primary excitation, core coupling, and secondary induction, overcoming the performance limitations caused by the reliance on high-voltage capacitors in traditional technologies. Furthermore, the device optimizes heat dissipation design through a coil temperature rise formula, eliminating the need for an independent water-cooling structure.

[0019] 2) This invention establishes a complete quantitative design and control system by deriving and establishing a series of quantitative formulas for core energy storage, secondary induced electromotive force, waveform parameter adjustment, and coil temperature rise. Based on the optimization of wavefront time and half-peak time formulas, closed-loop control is then implemented on the primary coil current change rate and secondary induction module parameters to achieve wide-range precise control of the generated current waveform. This significantly improves the accuracy, flexibility, and adaptability of impulse current generation technology, meeting the needs of on-site impulse testing of power equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the impulse current generation method based on inductive coupling of the present invention.

[0021] Figure 2 This is the optimized logic block diagram for the core formula of this invention.

[0022] Figure 3 This is a flowchart of the dual-parameter collaborative control algorithm of the present invention.

[0023] Figure 4 This is a bar chart comparing the test error before and after optimization in this invention. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0025] Example 1 This invention provides an impulse current generating device and method based on inductive coupling. The impulse current generating device based on inductive coupling includes: a primary drive module for energy input, a magnetic coupling core module for magnetic energy conversion, a secondary inductive module for current output, and a waveform control module for waveform modulation. For example... Figure 1 As shown, by deriving and optimizing the relevant formulas of electromagnetic induction and designing a closed-loop control algorithm, high-precision generation of inrush current, wide-range waveform control and efficient heat dissipation are achieved, meeting the requirements of accuracy, efficiency and adaptability for mobile testing of power equipment in the field.

[0026] The primary drive module includes a low-voltage energy storage capacitor, a SiC fast switch, and a primary coil; the low-voltage energy storage capacitor has a capacity of ≤1000 kJ / m³. Furthermore, the withstand voltage is ≤500V, the SiC fast switching response time is ≤100ns, and the primary coil current change rate is... Through formula Calculation and acquisition, where, The primary current peak value is 10-500A. The rise time of the primary current (≤1) ).

[0027] The magnetic coupling core module adopts a nanocrystalline alloy toroidal closed magnetic core with a saturation magnetic induction intensity ≥1.2T; the energy storage of the magnetic core satisfies the formula: in, Energy storage for magnetic cores (J). The working magnetic field strength of the magnetic core (A / m) ), For the core volume ( The turns ratio of the primary coil to the secondary coil is 1:50-1:200.

[0028] The waveform control module includes adjustable inductors (1-10). ), damping resistor (1-10) The waveform control system and PLC control system meet the following algorithm formula.

[0029] Wavefront time adjustment formula: in, Wavefront time (2-20) ), The waveform correction factor is (1.8-2.2). The equivalent inductance of the secondary circuit (H, , The inherent inductance of the secondary coil, (For adjustable inductors), wavefront time adjustment deviation ≤ ±5%.

[0030] Half-peak time adjustment formula: in, Half-peak time (10-350) ), Parasitic capacitance of the secondary circuit (F, ≤100) ), For damping resistors, the half-peak time adjustment deviation is ≤ ±5%.

[0031] The proposed device does not contain a traditional high-voltage capacitor energy storage unit, but generates an impulse current through the principle of electromagnetic induction, and the impulse current generation process satisfies the following derivation formula.

[0032] Formula for secondary induced electromotive force: in, For the induced electromotive force of the secondary coil ( V ), k The magnetic coupling coefficient is ≥0.95. The core permeability (H / m, ≥10) 4 H / m), The effective cross-sectional area of ​​the magnetic core (m²) 2 ), The number of turns in the primary coil (3-20 turns). The number of turns of the secondary coil. The magnetic core circuit length (m) is given. The rate of change of primary coil current (A / s, ≥10) 9 A / s).

[0033] Formula for peak impulse current: in, The peak value of the secondary surge current is (A, 1kA-20kA). The total resistance of the secondary circuit (Ω, including coil resistance, load resistance and contact resistance).

[0034] The device optimizes heat dissipation through a coil temperature rise formula, eliminating the need for a separate water-cooling structure. in, The coil temperature rise (°C) is the value of the coil. The effective value of the coil current (A) is given. The DC resistance of the coil is (Ω, ≤0.1Ω). The discharge cycle is 1.8s. The specific heat capacity of copper is 385 J / (kg・℃) The coil mass is measured in kg. The coil temperature can be ≤100℃ during continuous operation, and the continuous discharge rate can be ≥200 times / hour.

[0035] The device test error satisfies the formula: in, These are the measured parameters of the secondary circuit (peak impulse current, wavefront time, and half-peak time). The parameter setting value is δ≤3%; the device can simulate the transient characteristics of high-frequency lightning current of 0.1-5MHz and is suitable for the impulse performance test of grounding devices or surge arresters.

[0036] Furthermore, such as Figure 2 The specific implementation of the inductively coupled impulse current generating device shown above is as follows.

[0037] I. Optimization of secondary induced electromotive force.

[0038] To address the issue that traditional formulas do not consider magnetic coupling losses, an optimized magnetic coupling coefficient is introduced. (≥0.98), establish the quantitative relationship between the secondary induced electromotive force and the parameters of the magnetic core and coil: in, The induced electromotive force (V) is the secondary coil. The magnetic coupling coefficient is ≥0.95. The core permeability (H / m, ≥10) 4 H / m), The effective cross-sectional area of ​​the magnetic core (m²) 2 ), The number of turns in the primary coil (3-20 turns). The number of turns of the secondary coil. The magnetic core circuit length (m) is given. The rate of change of primary coil current (A / s, ≥10) 9 A / s); via The precise quantification reduces the electromotive force calculation error from the traditional ≥4% to ≤1.5%.

[0039] II. Optimization of peak inrush current.

[0040] To address the issue of current prediction errors caused by loop energy loss, a loop energy transfer efficiency coefficient is introduced. (0.92-0.96), Corrected calculation of peak inrush current: in, The peak value of the secondary inrush current is 1kA-20kA. The total resistance of the secondary circuit (Ω); the circuit energy transfer efficiency coefficient. By dynamically adjusting the coil resistance and contact resistance, the current peak calculation error is kept ≤2%, meeting the requirements of high-precision testing.

[0041] III. Waveform modulation optimization.

[0042] Wavefront time optimization: Introducing inductor temperature compensation coefficient (Based on dynamic correction of ambient temperature from -20℃ to 60℃, 0.9-1.1), eliminating the influence of temperature on inductor parameters: in, The wavefront time is 2-20 μs. The waveform correction factor is (1.8-2.2). The inductor temperature compensation coefficient is used, and the wavefront time adjustment deviation is ≤±3%.

[0043] Half-peak time optimization: in, The half-peak time is 10-350 μs. To correct the damping nonlinearity, For secondary circuit parasitic capacitance (F, ≤100pF). For damping resistors, the half-peak time adjustment deviation is ≤±3%.

[0044] Based on the above device, a two-parameter collaborative control algorithm is designed, and the process is as follows: Figure 3 As shown: S1. The Hall current sensor acquires the secondary current waveform in real time, and then performs filtering and noise reduction preprocessing.

[0045] S2. Calculate wavefront time based on optimization formula. Half-peak time and secondary surge current peak And compare it with the set value.

[0046] S3. If the deviation waveform parameter is greater than ±3% or the peak current is greater than 2%, then adjust accordingly: If wavefront time If the deviation from the set value is greater than the preset range: adjust the adjustable inductor. Synchronous correction of inductor temperature compensation coefficient .

[0047] If half-peak time If the deviation from the set value is greater than the preset range: adjust the damping resistor. Synchronous correction damping nonlinearity correction coefficient .

[0048] If the peak value of the secondary inrush current Deviation from set value exceeds preset range: Correct primary current change rate. Synchronous adjustment of the energy transmission efficiency coefficient of the loop .

[0049] S4. After adjustment, return to the waveform acquisition step to form a closed-loop control, output accurate waveform, and the response time is ≤1μs.

[0050] Example 2 In this embodiment, the scheme described in the above embodiments is used to simulate a 10kA lightning current impulse test (wavefront time 8μs, half-peak time 20μs), which is adapted to the surge arrester impulse performance test under a 25℃ environment. The core parameters are preset based on the optimized formula as follows: Magnetic coupling core parameters: nanocrystalline alloy magnetic core ( , ), effective cross-sectional area Magnetic circuit length Magnetic coupling coefficient (Achieved through symmetrical winding of coils).

[0051] Coil parameters: Number of turns in the primary coil Number of turns in the secondary coil Secondary coil DC resistance (turns ratio 1:100) load resistance (Total resistance of secondary circuit) ).

[0052] Primary drive parameters: low-voltage energy storage capacitor (capacity 500μF, withstand voltage 500V), SiC fast switching response time 50ns, primary current peak value. Rise time , Taking 1.0, the rate of change of current is: Waveform control parameters: Adjustable inductor Initial value 4 (Secondary equivalent inductance) ), damping resistor Parasitic capacitance .

[0053] Initial value of correction coefficient: Energy transfer efficiency coefficient Temperature compensation coefficient (25℃ environment), damping nonlinearity correction coefficient System error compensation coefficient .

[0054] I. Inrush current generation process.

[0055] 1.1 Calculation of secondary induced electromotive force: Substitute parameters: 1.2 Calculation of peak impact current: Substitute parameters: In actual testing, a 10kA output was achieved through parameter scaling; the calculation here is for formula verification.

[0056] II. Waveform control algorithm execution process.

[0057] 2.1 Wavefront Time Adjustment (Target) ).

[0058] 2.1.1 Initial Calculation: Based on the wavefront time optimization formula: Substitution , α=1.0 : The initial deviation is +25%.

[0059] 2.1.2 Parameter Adjustment: Because The algorithm reduces the adjustable inductance. Up to 3 ( ), recalculate: The deviation is -25%.

[0060] 2.1.3 Fine-tuning: Based on closed-loop feedback, adjustment Up to 4 ( ),final: The deviation is 0%.

[0061] 2.2 Half-peak time adjustment (target) ).

[0062] 2.2.1 Initial Calculation: Based on the half-peak time optimization formula: Substitution , , , , , : The deviation is too large and needs adjustment. .

[0063] 2.2.2 Parameter Adjustment: Increase Damping Resistance To 10Ω, recalculate: (Still too large deviation, need correction) Up to 1.04).

[0064] 2.2.3 Fine-tuning: Adjustment Up to 5Ω, : In actual testing, 20 was achieved through parameter scaling. To verify the validity of the formula.

[0065] This embodiment uses optimized formulas and closed-loop algorithms for regulation, such as... Figure 4 As shown: Peak impulse current 10kA (error ≤1%), wavefront time 8 (deviation ≤1%), half-peak time 20 (Deviation ≤ 1%).

[0066] 2. Waveform parameter adjustment deviation ≤3% under -20℃ to 60℃ environment, overall test error ≤2%.

[0067] 3. Charging time 4s, continuous discharge 200 times / hour, coil temperature ≤30℃ (25℃ environment).

[0068] The above embodiments demonstrate that, through formula optimization and algorithm design, the present invention significantly improves the accuracy, flexibility, and adaptability of impulse current generation technology, fully meeting the needs of on-site impulse testing of power equipment.

[0069] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0070] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An impulse current generating device based on inductive coupling, characterized in that, The impulse current generating device generates impulse current through the principle of electromagnetic induction, and includes: a primary drive module for energy input, a magnetic coupling core module for magnetic energy conversion, a secondary induction module for current output, and a waveform control module for waveform regulation.

2. The impulse current generating device based on inductive coupling according to claim 1, characterized in that, The primary drive module includes a low-voltage energy storage capacitor, a SiC fast switch, and a primary coil; the ratio of the primary current peak value to the primary current rise time is used as the primary coil current change rate.

3. The impulse current generating device based on inductive coupling according to claim 1, characterized in that, The magnetic coupling core module adopts a nanocrystalline alloy ring-shaped closed magnetic core, and the energy storage of the magnetic core satisfies the formula: in, For energy storage of magnetic cores, The working magnetic field strength of the magnetic core. For the core volume, The number of turns of the primary coil. This represents the length of the magnetic core's magnetic circuit.

4. The impulse current generating device based on inductive coupling according to claim 1, characterized in that, The waveform control module includes an adjustable inductor, a damping resistor, and a PLC control system; the waveform control satisfies the following algorithm formula: Wavefront time adjustment formula: in, For wavefront time, For waveform correction coefficients, The equivalent inductance of the secondary circuit, The inherent inductance of the secondary coil, It is an adjustable inductor; Half-peak time adjustment formula: in, Half-peak time, For secondary circuit parasitic capacitance, The total resistance of the secondary circuit. It is a damping resistor.

5. The impulse current generating device based on inductive coupling according to claim 1, characterized in that, The impulse current generating device satisfies the following formula during the impulse current generation process: in, This represents the peak value of the secondary inrush current. The total resistance of the secondary circuit includes the coil resistance, load resistance, and contact resistance. For secondary induced electromotive force: in, The induced electromotive force is for the secondary coil. k is the magnetic coupling coefficient. The magnetic permeability of the core. This is the effective cross-sectional area of ​​the magnetic core. The number of turns of the primary coil. The number of turns of the secondary coil. The length of the magnetic core circuit. This represents the rate of change of the primary coil current.

6. The impulse current generating device based on inductive coupling according to claim 1, characterized in that, The inrush current generator optimizes heat dissipation using the following coil temperature rise formula: in, For coil temperature rise, The effective value of the coil current. The DC resistance of the coil, For the discharge cycle, Let be the specific heat capacity of copper. The quality of the coil.

7. A method for generating impulse current based on inductive coupling, characterized in that, The method is based on the inductively coupled impulse current generating device as described in any one of claims 1-6, and the steps include: Real-time acquisition of secondary current waveform; Calculate the wavefront time, half-peak time, and peak value of the secondary impulse current, and compare them with the set values; If the peak value of the secondary impact current deviates from the set value by more than the preset range, the primary current change rate is corrected, and the circuit energy transmission efficiency coefficient is adjusted at the same time. If the deviation waveform parameter deviates from the set value by more than the preset range, the module parameter in the waveform control module is adjusted, and the correction coefficient is adjusted. After adjustment, the waveform is collected again to form a closed-loop control.

8. The method for generating impulse current based on inductive coupling according to claim 7, characterized in that, The wavefront time calculation adjustment is as follows: in, Wavefront time; This is the waveform correction factor; The equivalent inductance of the secondary circuit includes the inherent inductance of the secondary coil and the adjustable inductance; This is the inductor temperature compensation coefficient; The total resistance of the secondary circuit; If the wavefront time deviates from the set value by more than the preset range, the adjustable inductor is adjusted to simultaneously correct the inductor temperature compensation coefficient.

9. The method for generating impulse current based on inductive coupling according to claim 7, characterized in that, The half-peak time calculation adjustment is as follows: in, Half-peak time; This is the damping nonlinearity correction coefficient; The equivalent inductance of the secondary circuit includes the inherent inductance of the secondary coil and the adjustable inductance; This is the parasitic capacitance of the secondary circuit; For damping resistors; The total resistance of the secondary circuit; If half-peak time If the deviation from the set value is greater than the preset range, the damping resistor is adjusted to simultaneously correct the damping nonlinearity correction coefficient.

10. The method for generating impulse current based on inductive coupling according to claim 7, characterized in that, The peak impact current calculation and adjustment are as follows: in, This represents the peak value of the secondary inrush current. This is the transmission efficiency coefficient; The total resistance of the secondary circuit; This is the secondary induced electromotive force; is the magnetic coupling coefficient; The magnetic permeability of the magnetic core; This represents the effective cross-sectional area of ​​the magnetic core. This refers to the number of turns in the primary coil. This refers to the number of turns in the secondary coil. The length of the magnetic core's magnetic circuit; The rate of change of the primary coil current; If the peak value of the secondary impact current deviates from the set value by more than the preset range, the primary current change rate is corrected, and the circuit energy transmission efficiency coefficient is adjusted synchronously.

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