High-power high-voltage xenon lamp pre-combustion method and device

Abstract

The invention provides a high-power high-voltage xenon lamp pre-combustion method and device, relates to the technical field of power electronics, and solves the technical problems of high technical requirements and low applicability in the prior art. The method is applied to a high-voltage xenon lamp pre-combustion system. The high-voltage xenon lamp pre-combustion system comprises a rectifying circuit, an LCC resonant converter and a voltage doubling circuit. The method comprises the following steps: calculating voltage-multiplying capacitance according to the minimum trigger voltage requirement of the xenon lamp and by combining the characteristics of a voltage-multiplying circuit; calculating control parameters of the LCC resonant converter based on the dynamic resistance characteristics of the xenon lamp precombustion maintenance state and the basic parameters of the LCC resonant converter; self-adaptive divider resistance is calculated according to the voltage withstanding requirement during high-voltage triggering and the impedance matching requirement during precombustion maintaining; according to the control parameters of the voltage-multiplying capacitor and the LCC resonant converter and the self-adaptive divider resistance, the circuit topology of the high-voltage xenon lamp pre-combustion system is realized, and pre-combustion operation is executed. The precombustion device is used in the precombustion process of the high-power high-voltage xenon

Description

Technical Field

[0001] This application relates to the field of power electronics technology, and in particular to a method and apparatus for pre-combustion of a high-power high-pressure xenon lamp. Background Technology

[0002] With the widespread application of xenon lamp solid-state lasers in industry, agriculture, medicine, and military fields, the pre-ignition sustaining power supply for high-pressure xenon lamps has also been extensively studied. The working process of a pulsed xenon lamp includes three stages: ignition, pre-ignition, and high-voltage discharge. The ignition stage excites xenon gas molecules, the pre-ignition stage stabilizes the gas discharge, and the high-voltage discharge stage is when the xenon lamp actually emits light.

[0003] In traditional pulsed xenon lamp ignition and pre-ignition systems, separate voltage sources are required for the ignition and pre-ignition stages, increasing the complexity and cost of power supply design. Therefore, a more optimized power supply design is needed to meet the operational requirements of each stage, improve system performance and stability, and provide relevant parameter design methods. Several academic papers and invention patent analyses have proposed solutions to this problem. For example, the patent titled "A Xenon Lamp Pre-ignition Plate for Laser Welding Power Supply" (Patent No.: CN202110238915.6) proposes using a high-frequency switching power supply and xenon lamp pre-ignition current feedback technology to stably control the xenon lamp current. This achieves good xenon lamp pre-ignition effects without the need for a high-power resistor for voltage reduction and current limiting, reducing heat generation for prolonged operation. However, this technology has high control requirements, low xenon lamp model compatibility, and lacks reliability. Summary of the Invention

[0004] This application provides a high-power high-pressure xenon lamp pre-combustion method and apparatus, which solves the technical problems of high technical requirements and low applicability in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution: In a first aspect, a high-power high-pressure xenon lamp pre-ignition method is provided, applied to a high-pressure xenon lamp pre-ignition system. The high-pressure xenon lamp pre-ignition system comprises: a rectifier circuit, an LCC resonant converter, and a voltage multiplier circuit. The method includes: calculating a voltage multiplier capacitor based on the minimum trigger voltage requirement of the xenon lamp and the characteristics of the voltage multiplier circuit; calculating control parameters of the LCC resonant converter based on the dynamic resistance characteristics of the xenon lamp pre-ignition maintenance state and the basic parameters of the LCC resonant converter; calculating an adaptive voltage divider resistor based on the withstand voltage requirement during high-voltage triggering and the impedance matching requirement during pre-ignition maintenance; and realizing the circuit topology of the high-pressure xenon lamp pre-ignition system and performing the pre-ignition operation based on the voltage multiplier capacitor, the control parameters of the LCC resonant converter, and the adaptive voltage divider resistor.

[0006] Based on the above technical solution, in the high-power high-pressure xenon lamp pre-ignition method provided in this application, the voltage multiplier capacitor is calculated according to the minimum trigger voltage and the characteristics of the voltage multiplier circuit. This allows for precise design of the voltage multiplier circuit, achieving the high-voltage triggering requirement. Furthermore, optimization of low-current pre-ignition maintenance is achieved through LCC resonant parameter matching and adaptive current control. Finally, the highly integrated design of the overall architecture optimizes system size and energy efficiency, facilitating integration into laser systems and meeting the requirements of high reliability and miniaturization. In short, through multi-level optimized design and intelligent parameter matching, efficient triggering and stable pre-ignition of the high-pressure xenon lamp system are achieved, while simultaneously meeting the requirements of miniaturized and highly reliable laser integration.

[0007] In conjunction with the first aspect above, in one possible implementation, the LCC resonant converter is deployed in the pre-stage of the circuit combination, the voltage doubler circuit is deployed in the post-stage of the circuit combination, and the voltage doubler circuit is connected to the secondary side of the LCC resonant converter. Under no-load conditions, the maximum output voltage of the voltage multiplier circuit is expressed as: ; Indicates the maximum output voltage; Indicates the multiplier of the voltage multiplier circuit; This represents the peak value of a single-stage input voltage in a voltage multiplier circuit. The voltage drop of the voltage multiplier circuit is expressed as: ; Indicates voltage drop; This indicates the output current of the voltage multiplier rectifier circuit in the voltage multiplier circuit; This represents the branch resonant frequency of the LCC resonant converter; This represents a single-stage capacitor in a voltage multiplier circuit. Under load, the maximum output voltage of the voltage multiplier circuit is expressed as: ; The output voltage drop impedance of the voltage doubler rectifier circuit is expressed as: ; Indicates the output voltage drop impedance; The ripple of the output voltage of a voltage doubler rectifier circuit is expressed as: Indicates ripple; The method for calculating the voltage multiplier capacitor based on the minimum trigger voltage requirement of the xenon lamp and the characteristics of the voltage multiplier circuit specifically includes: calculating the voltage multiplier capacitor based on the voltage multiplier, the output current of the voltage multiplier rectifier circuit, the branch resonant frequency, and the ripple of the output voltage of the voltage multiplier rectifier circuit; the voltage multiplier capacitor is expressed as: ; It is a voltage multiplier capacitor; the value of the voltage multiplier capacitor is selected to ensure that the maximum output voltage of the voltage multiplier circuit is greater than the minimum trigger voltage of the xenon lamp under load.

[0008] In conjunction with the first aspect above, in one possible implementation, the branch resonant frequency of the LCC resonant converter is expressed as: ; This represents the branch resonant frequency of the LCC resonant converter; This represents the resonant inductance of an LCC resonant converter; This represents the resonant capacitance of the LCC resonant converter; The main resonant frequency of the LCC resonant converter is expressed as: ; This indicates the main resonant frequency of the LCC resonant converter; This indicates the switching frequency of the LCC resonant converter; This represents the normalized frequency of the LCC resonant converter; The equivalent AC impedance on the primary side of the high-frequency transformer in an LCC resonant converter is expressed as: ; Represents the equivalent AC impedance; This indicates the turns ratio of the high-frequency transformer in an LCC resonant converter; This indicates the sustaining resistance of the xenon lamp in the pre-ignition state; This indicates the sustaining current of the xenon lamp in the pre-ignition state; This indicates the sustaining voltage of the xenon lamp in the pre-ignition state; The resonant capacitance ratio of the LCC resonant converter is expressed as: ; Indicates the resonant capacitance ratio; This represents the clamping capacitor of the LCC resonant converter; The normalized frequency is expressed as: ; The current gain of the LCC resonant converter is expressed as: ; Indicates current gain; This represents the resonant cavity angular frequency of the LCC resonant converter; This represents the input voltage of the LCC resonant converter; The method described above for calculating the control parameters of the LCC resonant converter based on the dynamic resistance characteristics of the xenon lamp pre-ignition sustaining state and the basic parameters of the LCC resonant converter specifically includes: calculating the transformer turns ratio based on the input voltage of the LCC resonant converter and the sustaining voltage of the xenon lamp in the pre-ignition state; the transformer turns ratio is expressed as: ; Calculate the resonant inductance based on the resonant capacitance ratio, resonant cavity angular frequency, and current gain; the resonant inductance is expressed as: ; Calculate the resonant capacitance based on the resonant inductance and the main circuit resonant frequency; the resonant capacitance is expressed as: .

[0009] In conjunction with the first aspect above, in one possible implementation, the switching frequency of the LCC resonant converter satisfies: .

[0010] In conjunction with the first aspect mentioned above, in one possible implementation, the method further includes: real-time monitoring of the impedance change of the xenon lamp, and dynamic adjustment of the switching frequency of the LCC resonant converter through a PID algorithm to maintain the current deviation control within a preset range.

[0011] In conjunction with the first aspect above, in one possible implementation, the method for calculating the adaptive voltage divider resistor based on the withstand voltage requirement during high-voltage triggering and the impedance matching requirement during pre-ignition maintenance specifically includes: calculating the adaptive voltage divider resistor based on the high-voltage triggering voltage and the resistance of the xenon lamp before ignition; the adaptive voltage divider resistor satisfies: ; Indicates an adaptive voltage divider resistor; Indicates the high-voltage trigger voltage; This indicates the resistance before the light is turned on.

[0012] In conjunction with the first aspect mentioned above, in one possible implementation, the adaptive voltage divider resistor uses a combination of a high-voltage glass glaze resistor and a metal film resistor.

[0013] In conjunction with the first aspect mentioned above, in one possible implementation, the voltage multiplier circuit adopts a Cockcroft-Walton topology, and the voltage rating of each capacitor stage satisfies: ; This represents the peak value of a single-stage input voltage in a voltage multiplier circuit. This indicates the input voltage of the LCC resonant converter; the 20% margin design is used to cope with voltage spikes and extend capacitor life.

[0014] In conjunction with the first aspect mentioned above, in one possible implementation, the transformer of the LCC resonant converter uses a nanocrystalline magnetic core.

[0015] Secondly, a high-power high-pressure xenon lamp pre-ignition device is provided, applied to a high-pressure xenon lamp pre-ignition system. The high-pressure xenon lamp pre-ignition system includes a rectifier circuit, an LCC resonant converter, and a voltage multiplier circuit. The device includes a processing unit. The processing unit is used to calculate the voltage multiplier capacitor based on the minimum trigger voltage requirement of the xenon lamp and the characteristics of the voltage multiplier circuit. The processing unit is also used to calculate the control parameters of the LCC resonant converter based on the dynamic resistance characteristics of the xenon lamp pre-ignition maintenance state and the basic parameters of the LCC resonant converter. The processing unit is also used to calculate the adaptive voltage divider resistor based on the withstand voltage requirement during high-voltage triggering and the impedance matching requirement during pre-ignition maintenance. The processing unit is also used to realize the circuit topology of the high-pressure xenon lamp pre-ignition system and perform the pre-ignition operation based on the voltage multiplier capacitor, the control parameters of the LCC resonant converter, and the adaptive voltage divider resistor.

[0016] Thirdly, this application provides a high-power, high-pressure xenon lamp pre-ignition device, comprising: a processor and a storage medium; the storage medium includes instructions, and the processor is configured to execute the instructions to implement the method described in the first aspect and any possible implementation thereof. This high-power, high-pressure xenon lamp pre-ignition device may be an electronic device or a chip within an electronic device.

[0017] Fourthly, this application provides a high-power high-pressure xenon lamp pre-ignition system, including: a rectifier circuit, an LCC resonant converter, a voltage multiplier circuit, a calculation module, and an execution module; the calculation module is used to calculate the voltage multiplier capacitor based on the minimum trigger voltage requirement of the xenon lamp and the characteristics of the voltage multiplier circuit; the calculation module is also used to calculate the control parameters of the LCC resonant converter based on the dynamic resistance characteristics of the xenon lamp pre-ignition maintenance state and the basic parameters of the LCC resonant converter; the calculation module is also used to calculate the adaptive voltage divider resistor based on the withstand voltage requirement during high-voltage triggering and the impedance matching requirement during pre-ignition maintenance; the execution module is used to realize the circuit topology of the high-pressure xenon lamp pre-ignition system and perform the pre-ignition operation based on the voltage multiplier capacitor, the control parameters of the LCC resonant converter, and the adaptive voltage divider resistor.

[0018] Fifthly, this application provides a computer-readable storage medium storing instructions that, when executed on a high-power high-pressure xenon lamp pre-ignition device, cause the high-power high-pressure xenon lamp pre-ignition device to perform the method described in the first aspect and any possible implementation thereof.

[0019] Sixthly, this application provides a computer program product containing instructions that, when the computer program product is run on a high-power high-pressure xenon lamp pre-ignition device, cause the high-power high-pressure xenon lamp pre-ignition device to perform the methods described in the first aspect and any possible implementation thereof.

[0020] This application provides a method and apparatus for pre-ignition of a high-power, high-pressure xenon lamp. By calculating the voltage multiplier capacitor based on the minimum trigger voltage and the characteristics of the voltage multiplier circuit, the voltage multiplier circuit can be precisely designed to meet high-voltage triggering requirements. Furthermore, through LCC resonant parameter matching and adaptive current control, the maintenance of low-current pre-ignition is optimized. Finally, through a highly integrated design of the overall architecture, the system size and energy efficiency are optimized, facilitating integration into laser systems and meeting the requirements for high reliability and miniaturization. In short, through multi-level optimized design and intelligent parameter matching, efficient triggering and stable pre-ignition of the high-pressure xenon lamp system are achieved, while simultaneously meeting the requirements for miniaturized and highly reliable laser integration.

[0021] It should be understood that the descriptions of technical features, technical solutions, beneficial effects, or similar language in this application do not imply that all features and advantages can be achieved in any single embodiment. Rather, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution, or beneficial effect is included in at least one embodiment. Therefore, the descriptions of technical features, technical solutions, or beneficial effects in this specification do not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in this embodiment can be combined in any suitable manner. Those skilled in the art will understand that embodiments can be implemented without one or more specific technical features, technical solutions, or beneficial effects of a particular embodiment. In other embodiments, additional technical features and beneficial effects may be identified in specific embodiments that do not embody all embodiments. Attached Figure Description

[0022] Figure 1 A circuit topology diagram of a high-pressure xenon lamp pre-ignition system provided in this application embodiment; Figure 2 A schematic flowchart of a high-power high-pressure xenon lamp pre-combustion method provided in this application embodiment; Figure 3 This is a schematic flowchart of the pre-combustion operation in a high-power high-pressure xenon lamp pre-combustion method provided in an embodiment of this application; Figure 4 A schematic flowchart of another high-power high-pressure xenon lamp pre-ignition method provided in this application embodiment; Figure 5 A schematic flowchart of another high-power high-pressure xenon lamp pre-ignition method provided in this application embodiment; Figure 6A schematic flowchart of another high-power high-pressure xenon lamp pre-ignition method provided in this application embodiment; Figure 7 A schematic flowchart of another high-power high-pressure xenon lamp pre-ignition method provided in this application embodiment; Figure 8 A test diagram of a high-pressure xenon lamp pre-ignition sustaining power supply provided for an embodiment of this application; Figure 9 A test diagram of another high-pressure xenon lamp pre-ignition sustaining power supply provided for an embodiment of this application; Figure 10 This is a schematic diagram of the structure of a high-power high-pressure xenon lamp pre-combustion device provided in an embodiment of this application; Figure 11 This is a schematic diagram of the hardware structure of a high-power high-pressure xenon lamp pre-ignition device provided in an embodiment of this application. Detailed Implementation

[0023] In the description of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. The "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" means one or more, and "multiple" means two or more. The terms "first," "second," etc., do not limit the quantity or order of execution, and "first," "second," etc., do not necessarily imply differences.

[0024] It should be noted that, in this application, the terms "exemplary" or "for example" are used to indicate that something is being described as an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0025] The high-power high-pressure xenon lamp pre-combustion method provided in this application embodiment can be applied to a high-pressure xenon lamp pre-combustion system 100, such as... Figure 1 As shown, the high-pressure xenon lamp pre-combustion system 100 includes: a rectifier circuit, an LCC resonant converter, and a voltage multiplier circuit.

[0026] The LCC resonant converter is deployed in the front stage of the circuit combination, the voltage doubler circuit is deployed in the back stage of the circuit combination, and the voltage doubler circuit is connected to the secondary side of the LCC resonant converter.

[0027] like Figure 1 As shown, the pre-stage resonant converter (LCC resonant cavity section) consists of switching transistors S1 and S2, and resonant capacitor C. rResonant inductor L r It consists of the primary winding of transformer T.

[0028] Switches S1 and S2 are controlled by pulse width modulation (PWM) signals to alternately turn on and off, thereby converting the DC input into an AC signal.

[0029] Resonant capacitor C r Resonant inductor L r Together with the primary winding of transformer T, they form an LCC resonant cavity, which is used to realize resonant transformation and provide a suitable AC input for the subsequent stage.

[0030] like Figure 1 As shown, the voltage multiplier circuit consists of multiple capacitors (C3, C4, C5, C6, C7, etc.) and diodes (D5, D6, D7, D8, D9, etc.) forming a multi-stage voltage multiplier structure.

[0031] The AC voltage output from the secondary winding of transformer T is connected to the input terminal of the voltage multiplier circuit.

[0032] By alternating charging and discharging of capacitors and diodes, the AC voltage is multiplied multiple times, ultimately resulting in a high voltage (greater than 7kV) at the output terminal that meets the requirements for igniting xenon lamps.

[0033] The AC signal generated by the pre-resonant converter is coupled to the secondary side through transformer T. A voltage multiplier circuit connected to the secondary side boosts this AC signal to obtain a high voltage capable of triggering the xenon lamp. The diagram also includes auxiliary components such as capacitor C1 for filtering and resistor R. HV1 R HV2 These functions can be used for voltage division or current limiting to ensure stable circuit operation.

[0034] from Figure 1 As can be seen in the diagram, the pre-ignition circuit includes a rectifier circuit. Specifically, D1, D2, D3, and D4 in the diagram constitute the rectifier circuit. The function of these diodes is to convert the AC voltage output from the transformer's secondary winding into a DC voltage, so that the subsequent voltage multiplier circuit can perform further voltage boosting based on this DC voltage, ultimately obtaining the high voltage required for the xenon lamp to light up.

[0035] Furthermore, the transformer of the LCC resonant converter uses a nanocrystalline magnetic core with a magnetic flux density ≥1.2T and an interlayer insulation withstand voltage ≥5kV.

[0036] First, the nanocrystalline magnetic core (μ=80000) has an iron loss of <15mW / cm³ at 100kHz and a 40% reduction in temperature rise, achieving high frequency and low loss.

[0037] Secondly, the 5kV interlayer withstand voltage prevents high-voltage breakdown and ensures insulation safety.

[0038] In addition, it is 60% smaller in volume than a ferrite transformer for the same power, which can effectively reduce the size of the equipment and achieve miniaturization.

[0039] To address the technical problems of high technical requirements and low applicability in existing technologies, this application provides a high-power high-pressure xenon lamp pre-ignition system. To meet the requirements of high reliability and miniaturization, and to optimize the size and energy efficiency of the xenon lamp pre-ignition sustaining network circuit system, this system can adopt an integrated triggering and pre-ignition sustaining topology. In terms of the pre-ignition sustaining circuit, it is based on a series-parallel resonant converter, with an additional set of windings added to the secondary side. One set of windings outputs to provide the triggering high voltage, while the other outputs the pre-ignition sustaining current.

[0040] LCC resonant converters feature a simplified component design, and their secondary-side diodes enable zero-loss turn-off, making them suitable for low-to-medium power, high-density applications. In continuous current mode, the converter can make the resonant network inductive, thereby enabling zero-loss conduction of the secondary-side switching devices. This characteristic is particularly well-suited to the constant current operation requirements of low-current, low-power xenon lamps that primarily use MOSFETs.

[0041] like Figure 2 As shown in the embodiments of this application, the high-power high-pressure xenon lamp pre-combustion method includes: S201. Based on the minimum trigger voltage requirement of the xenon lamp and the characteristics of the voltage multiplier circuit, calculate the voltage multiplier capacitor.

[0042] S202. Based on the dynamic resistance characteristics of the xenon lamp pre-ignition maintenance state and the basic parameters of the LCC resonant converter, calculate the control parameters of the LCC resonant converter.

[0043] Optionally, the control parameters of the LCC resonant converter may include: Switching frequency: This is the operating frequency of the switching transistors in an LCC resonant converter. By adjusting the switching frequency, the output characteristics of the converter, such as output voltage and current, can be controlled. It is one of the important control parameters of an LCC resonant converter.

[0044] Current gain: This reflects the current amplification capability of the converter. By controlling and adjusting the current gain, the output current of the converter can be indirectly controlled, thereby achieving current control of the load (xenon lamp). It belongs to the control-related parameters.

[0045] Transformer turns ratio: Although the transformer turns ratio is determined to some extent based on the input-output voltage relationship, it also affects the voltage and current conversion characteristics of the converter. By adjusting the turns ratio, the output voltage and current of the converter can be changed, thereby achieving output control. Therefore, it can also be regarded as a control parameter.

[0046] Resonant inductor and resonant capacitor: These are key resonant components of an LCC resonant converter. Their values ​​directly determine the converter's resonant frequency and resonant characteristics. By adjusting their values, the resonant state of the converter can be controlled, thereby controlling the output voltage and current, etc. They are control parameters.

[0047] S203. Calculate the adaptive voltage divider resistor based on the withstand voltage requirements during high-voltage triggering and the impedance matching requirements during pre-ignition maintenance.

[0048] S204. Based on the control parameters of the voltage multiplier capacitor, the LCC resonant converter, and the adaptive voltage divider resistor, realize the circuit topology of the high-pressure xenon lamp pre-ignition system and perform the pre-ignition operation.

[0049] In some implementations, such as Figure 3 The flowchart shown illustrates the operation of the high-pressure xenon lamp pre-ignition sustaining power supply. The pre-ignition operation includes: After receiving the pre-ignition command from the control board, the system executes the following steps: Trigger the xenon lamp load, initiate pre-ignition via wave-based soft start, and gradually increase the duty cycle; The switching pulse width of the pre-ignition stage is dynamically adjusted based on feedback values ​​to ensure reliable pre-ignition. The current and voltage values ​​of the xenon lamp load are sampled in real time. If the current is greater than 120mA and the voltage is less than 200V, the pre-ignition is considered successful; otherwise, the pre-ignition is considered abnormal. If pre-ignition malfunctions, the program will gradually reduce the pulse width of the pre-ignition circuit. If pre-ignition still fails after three consecutive adjustments, it is determined to have failed, and a pre-ignition failure signal is sent.

[0050] Based on the above technical solution, the high-power high-pressure xenon lamp pre-ignition method provided in this application calculates the voltage multiplier capacitor according to the minimum trigger voltage and the characteristics of the voltage multiplier circuit, enabling precise design of the voltage multiplier circuit to meet high-voltage triggering requirements. Furthermore, through LCC resonant parameter matching and adaptive current control, the maintenance of low-current pre-ignition is optimized. Finally, through highly integrated design of the overall architecture, the system size and energy efficiency are optimized, facilitating integration into laser systems and meeting the requirements of high reliability and miniaturization. In other words, through multi-level optimized design and intelligent parameter matching, efficient triggering and stable pre-ignition of the high-pressure xenon lamp system are achieved, while simultaneously meeting the requirements of miniaturized and highly reliable laser integration.

[0051] In one possible implementation, combining Figure 2 ,like Figure 4 As shown, the method in S201 above can be specifically implemented through the following S401, which will be explained in detail below: S401. Calculate the voltage multiplier capacitor based on the voltage multiplier, the output current of the voltage multiplier rectifier circuit, the branch resonant frequency, and the ripple of the output voltage of the voltage multiplier rectifier circuit.

[0052] In the no-load state, the maximum output voltage of the voltage multiplier circuit is expressed as: ; Indicates the maximum output voltage; Indicates the multiplier of the voltage multiplier circuit; This represents the peak value of a single-stage input voltage in a voltage multiplier circuit. The voltage drop of the voltage multiplier circuit is expressed as: ; Indicates voltage drop; This indicates the output current of the voltage multiplier rectifier circuit in the voltage multiplier circuit; This represents the branch resonant frequency of the LCC resonant converter; This represents a single-stage capacitor in a voltage multiplier circuit. Under load, the maximum output voltage of the voltage multiplier circuit is expressed as: ; The output voltage drop impedance of the voltage doubler rectifier circuit is expressed as: ; Indicates the output voltage drop impedance; The ripple of the output voltage of a voltage doubler rectifier circuit is expressed as: Indicates ripple; A voltage multiplier capacitor is represented as: ; It is a voltage multiplier capacitor; the value of the voltage multiplier capacitor is selected to ensure that the maximum output voltage of the voltage multiplier circuit is greater than the minimum trigger voltage of the xenon lamp under load.

[0053] In some implementations, the voltage multiplier circuit uses a Cockcroft-Walton topology, and the voltage rating of each capacitor stage meets the following requirements: ; This represents the peak value of a single-stage input voltage in the voltage multiplier circuit. This indicates the input voltage of the LCC resonant converter; the 20% margin design is used to cope with voltage spikes and extend capacitor life.

[0054] The 20% withstand voltage margin (i.e., the capacitor's rated operating voltage ≥ 1.2 × actual maximum operating voltage) is a comprehensive consideration based on physical principles, reliability engineering, and long-term practice. Its specific functions include: Addressing voltage stress and transient spikes: Due to the presence of parasitic inductance and capacitance, sudden current changes can trigger high-frequency oscillations and voltage spikes. These spikes may significantly exceed the theoretical DC voltage. A 20% margin provides a buffer to absorb these transient overvoltages, preventing instantaneous capacitor breakdown. In multi-stage voltage multiplier circuits, theoretical voltage equalization is difficult to achieve in practice due to tolerances in capacitor values ​​and slight differences in leakage current. Some capacitors may withstand voltages higher than theoretically expected; the margin design ensures that even if a capacitor in a certain stage experiences a slightly higher voltage drop, it remains within a safe range.

[0055] Ensuring long-term reliability and lifespan: By allowing the capacitor to operate below 80% of its rated voltage with a 20% margin, the electric field strength can be significantly reduced, greatly delaying aging; the 20% margin can also partially compensate for the decrease in withstand voltage caused by ambient temperature or internal heating (caused by ripple current), ensuring that the capacitor can still operate safely at the highest operating temperature.

[0056] Based on the above technical solution, the trigger current, frequency, and voltage drop can be correlated using formulas to ensure that the capacitor value meets the minimum 7kV trigger voltage requirement, thus avoiding undervoltage leading to ignition failure. Secondly, clarifying the inverse relationship between capacitor value and frequency guides the use of small-capacity capacitors (e.g., 4.7nF) in high-frequency designs (e.g., 100kHz), reducing circuit size.

[0057] In addition, the introduction of a cubic term of the multiplier (stage) covers the nonlinear losses of multi-stage voltage multiplication, prevents overheating failure caused by insufficient capacitor selection, and effectively improves technical reliability.

[0058] In one possible implementation, combining Figure 2 ,like Figure 5 As shown, the method in S202 above can be specifically implemented through the following S501 to S503, which are explained in detail below: S501. Calculate the transformer turns ratio based on the input voltage of the LCC resonant converter and the sustaining voltage of the xenon lamp in the pre-ignition state.

[0059] S502. Calculate the resonant inductance based on the resonant capacitance ratio, resonant cavity angular frequency, and current gain.

[0060] S503. Calculate the resonant capacitance based on the resonant inductance and the main resonant frequency.

[0061] The branch resonant frequency of the LCC resonant converter is expressed as: ; This represents the branch resonant frequency of the LCC resonant converter; This represents the resonant inductance of an LCC resonant converter; This represents the resonant capacitance of the LCC resonant converter; The main resonant frequency of the LCC resonant converter is expressed as: ; This indicates the main resonant frequency of the LCC resonant converter; This indicates the switching frequency of the LCC resonant converter; This represents the normalized frequency of the LCC resonant converter; The equivalent AC impedance on the primary side of the high-frequency transformer in an LCC resonant converter is expressed as: ; Represents the equivalent AC impedance; This indicates the turns ratio of the high-frequency transformer in an LCC resonant converter; This indicates the sustaining resistance of the xenon lamp in the pre-ignition state; This indicates the sustaining current of the xenon lamp in the pre-ignition state; This indicates the sustaining voltage of the xenon lamp in the pre-ignition state; The resonant capacitance ratio of the LCC resonant converter is expressed as: ; Indicates the resonant capacitance ratio; This represents the clamping capacitor of the LCC resonant converter; The normalized frequency is expressed as: ; The current gain of the LCC resonant converter is expressed as: ; Indicates current gain; This represents the resonant cavity angular frequency of the LCC resonant converter; This represents the input voltage of the LCC resonant converter; The transformer turns ratio is expressed as: ; The resonant inductor is represented as: ; The resonant capacitor is represented as: .

[0062] In some implementations, the switching frequency of the LCC resonant converter satisfies: , By limiting the switching of transistors to zero voltage, efficiency can be guaranteed and improved. Furthermore, avoiding sudden gain changes caused by frequency approaching the resonant point effectively reduces the system's response time to load variations. In addition, this technology is compatible with xenon lamps of different power (e.g., 3kW and 6kW systems), requiring only adjustment of the switching frequency without topology reconstruction.

[0063] Based on the above technical solution, the dynamic impedance of the xenon lamp can be matched using the transformer turns ratio formula to maintain current stability. Then, through precise calculation of the resonant inductor and capacitor, soft switching is ensured, reducing losses.

[0064] In one possible implementation of the embodiments of this application, combined with Figure 5 ,like Figure 6 As shown, the above method also includes the following S601, which will be described in detail below: S601: Real-time monitoring of xenon lamp impedance changes, and dynamic adjustment of LCC resonant converter switching frequency through PID algorithm to maintain current deviation control within preset range.

[0065] In some implementations, the preset range can be within ±2%.

[0066] Based on the above technical solution, changes in xenon lamp impedance (such as resistance increases due to electrode wear) can be tracked in real time to maintain current accuracy. Furthermore, rapid convergence and improved response speed are achieved through adaptive adjustment of PID parameters.

[0067] In one possible implementation of the embodiments of this application, combined with Figure 2 ,like Figure 7 As shown, the method in S203 above can be specifically implemented through the following S701, which will be explained in detail below: S701. Calculate the adaptive voltage divider resistor based on the high-voltage trigger voltage and the resistance of the xenon lamp before it is lit.

[0068] The adaptive voltage divider resistor satisfies the following: ; Indicates an adaptive voltage divider resistor; Indicates the high-voltage trigger voltage; This indicates the resistance before the light is turned on.

[0069] The core purpose of this inequality is to ensure that the voltage divider network does not burn out due to excessive power at the moment of high-voltage triggering, while simultaneously ensuring accurate sampling of the voltage signal. Its rationale is based on the following electrical principles: When the xenon lamp is not triggered, the gas inside the xenon lamp is not ionized and exhibits extremely high resistance. ≈∞). At this point, the current flows through the entire circuit (including the voltage divider resistors). The current is extremely weak, almost zero. The inequality applies in... When ≈∞, the right side approaches zero. For a finite positive value (in practice, on the order of megaohms), the inequality holds.

[0070] Therefore, the above inequality qualitatively indicates that the resistance value of the voltage divider resistor must be large enough to limit the current and reduce power consumption. Following this principle can basically ensure that the voltage divider resistor will not burn out instantaneously due to excessive current at the moment of high voltage triggering.

[0071] In some implementations, the adaptive voltage divider resistors combine high-voltage glass enamel resistors with metal film resistors. The glass enamel resistors have a withstand voltage of ≥37.5kV, preventing creepage failure and ensuring high-voltage safety. The metal film resistors can compensate for sampling deviations caused by temperature changes. Through integrated deployment, the resistor network size can be reduced by 50%, enabling miniaturization.

[0072] Based on the above technical solution, the high-voltage sampling voltage division ratio is automatically set according to the untriggered impedance of the xenon lamp (resistance before lighting) to achieve safe input. Furthermore, dynamic adjustment can maintain a low voltage division ratio (e.g., 100:1) during phase switching, reducing sampling errors and improving accuracy.

[0073] To verify the feasibility of the proposed technical solution, an experimental circuit with a high-power high-voltage pulse power supply main circuit topology was built.

[0074] Figure 8 and Figure 9 The diagram shows the test configuration of the high-voltage xenon lamp pre-ignition sustaining power supply. The ideal trigger voltage output of the n-stage voltage multiplier rectifier circuit in the xenon lamp triggering circuit is greater than 18kV. The transformer ratio in the voltage multiplier circuit is 50:360, and the converter input voltage... The voltage of the three-phase rectified circuit is 311V. The voltage is 2239.2V. The voltage multiplier circuit uses a quadruple voltage multiplier (n=4), and the trigger voltage is... The voltage is 17913.6V. According to relevant literature, the pre-ignition current of a xenon lamp typically fluctuates between 50-150mA, and the output pre-ignition voltage is approximately 100V. Considering a margin, I=200mA, and the voltage doubler rectifier circuit assumes a voltage ripple of less than 10%. =1800V, the value of the capacitor can be calculated. Based on market considerations, a 10nF capacitor was selected. The switching frequency range of the resonant cavity was set to 60kHz, and the resonant transformer turns ratio was 1:2. The value of the resonant inductor was... The value of the resonant capacitor is The value of the resonant clamping capacitor is Based on market considerations, the actual selected series resonant capacitor size is 0.15μF, the parallel resonant clamping capacitor size is 6.8nF, and the actual wound inductance is 855μH for the series resonant capacitor. This technical solution has high feasibility.

[0075] The above primarily describes the solutions of the embodiments of this application from the perspective of device implementation. It is understood that each device, such as a high-power high-pressure xenon lamp pre-combustion device, includes at least one of the hardware structures and software modules corresponding to the execution of each function in order to achieve the above-mentioned functions. Those skilled in the art should readily recognize that, in conjunction with the units and algorithm steps of the various examples described in the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0076] This application embodiment can divide the high-power high-pressure xenon lamp pre-combustion device into functional units according to the above method example. For example, each function can be divided into separate functional units, or two or more functions can be integrated into one processing unit. The integrated unit can be implemented in hardware or software functional units. It should be noted that the unit division in this application embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods.

[0077] When using integrated units, Figure 10 A possible structural schematic diagram of the high-power high-pressure xenon lamp pre-ignition device 1000 involved in the above embodiments is shown. The high-power high-pressure xenon lamp pre-ignition device 1000 includes a processing unit 1001, and may also include a communication unit 1002 and a storage unit 1003. Figure 10 The schematic diagram shown can be used to illustrate the structure of the high-power high-pressure xenon lamp pre-combustion device involved in the above embodiments.

[0078] when Figure 10 The schematic diagram shown illustrates the structure of the high-power high-pressure xenon lamp pre-combustion device involved in the above embodiments. The processing unit 1001 is used to control and manage the operation of the high-power high-pressure xenon lamp pre-combustion device, the communication unit 1002 is used for the high-power high-pressure xenon lamp pre-combustion device to communicate with other devices, and the storage unit 1003 is used to store the program code and data of the high-power high-pressure xenon lamp pre-combustion device.

[0079] For example, processing unit 1001; The processing unit 1001 is used to calculate the voltage multiplier capacitor based on the minimum trigger voltage requirement of the xenon lamp and the characteristics of the voltage multiplier circuit.

[0080] The processing unit 1001 is also used to calculate the control parameters of the LCC resonant converter based on the dynamic resistance characteristics of the xenon lamp pre-ignition maintenance state and the basic parameters of the LCC resonant converter.

[0081] The processing unit 1001 is also used to calculate the adaptive voltage divider resistor based on the withstand voltage requirements during high-voltage triggering and the impedance matching requirements during pre-ignition maintenance.

[0082] The processing unit 1001 is also used to realize the circuit topology of the high-pressure xenon lamp pre-ignition system and perform the pre-ignition operation based on the control parameters of the voltage multiplier capacitor, the LCC resonant converter and the adaptive voltage divider resistor.

[0083] In one possible implementation, the processing unit 1001 is specifically used to calculate the voltage multiplier capacitor based on the voltage multiplier, the output current of the voltage multiplier rectifier circuit in the voltage multiplier circuit, the branch resonant frequency, and the ripple of the output voltage of the voltage multiplier rectifier circuit.

[0084] In one possible implementation, the processing unit 1001 is specifically used to calculate the transformer turns ratio based on the input voltage of the LCC resonant converter and the sustaining voltage of the xenon lamp in the pre-ignition state; calculate the resonant inductance based on the resonant capacitance ratio, the resonant cavity angular frequency, and the current gain; and calculate the resonant capacitance based on the resonant inductance and the main circuit resonant frequency.

[0085] In one possible implementation, the processing unit 1001 is also used to monitor the impedance change of the xenon lamp in real time and dynamically adjust the switching frequency of the LCC resonant converter through a PID algorithm to maintain the current deviation control within a preset range.

[0086] In one possible implementation, the processing unit 1001 is specifically used to calculate the adaptive voltage divider resistor based on the high-voltage trigger voltage and the resistance of the xenon lamp before it is lit.

[0087] The processing unit 1001 can be a processor or a controller, and the communication unit 1002 can be a communication interface, transceiver, transceiver circuit, transceiver device, etc. The term "communication interface" is a general term and may include one or more interfaces. The storage unit 1003 can be a memory. When the high-power high-pressure xenon lamp pre-ignition device 1000 is a chip, the processing unit 1001 can be a processor or a controller, and the communication unit 1002 can be an input interface and / or an output interface, pins, or circuits, etc. The storage unit 1003 can be a storage unit within the chip (e.g., a register, cache, etc.) or a storage unit located outside the chip (e.g., read-only memory (ROM), random access memory (RAM, etc.)).

[0088] Figure 10 If the integrated units in the process are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this application, in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, 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.) or processor to execute all or part of the steps of the methods of the various embodiments of this application. Storage media for storing computer software products include various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory, random access memory, magnetic disks, or optical disks.

[0089] Figure 10 The units in the process can also be called modules; for example, a processing unit can be called a processing module.

[0090] This application also provides a hardware structure diagram of a high-power high-pressure xenon lamp pre-ignition device. (See attached diagram) Figure 11 The high-power high-pressure xenon lamp pre-ignition device 1100 includes a processor 1101, and optionally, a memory 1102 connected to the processor 1101.

[0091] In the first possible implementation, see Figure 11The high-power, high-pressure xenon lamp pre-ignition device 1100 also includes a transceiver 1103. The processor 1101, memory 1102, and transceiver 1103 are connected via a bus. The transceiver 1103 is used to communicate with other devices or communication networks. Optionally, the transceiver 1103 may include a transmitter and a receiver. The device in the transceiver 1103 that implements the receiving function can be considered as a receiver, which is used to perform the receiving steps in the embodiments of this application. The device in the transceiver 1103 that implements the transmitting function can be considered as a transmitter, which is used to perform the transmitting steps in the embodiments of this application.

[0092] Based on the first possible implementation method Figure 11 The schematic diagram shown can be used to illustrate the structure of the high-power high-pressure xenon lamp pre-combustion device involved in the above embodiments.

[0093] in, Figure 11 The diagram can also illustrate the system chip in a high-power, high-pressure xenon lamp pre-combustion device. In this case, the actions performed by the aforementioned high-power, high-pressure xenon lamp pre-combustion device can be implemented by this system chip; the specific actions performed can be found above and will not be repeated here.

[0094] In implementation, each step of the method provided in this embodiment can be completed by integrated logic circuits in the processor or by instructions in software form. The steps of the method disclosed in the embodiments of this application can be directly manifested as being executed by a hardware processor, or being executed by a combination of hardware and software modules in the processor.

[0095] The processor in this application may include, but is not limited to, at least one of the following: a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a microcontroller unit (MCU), or an artificial intelligence processor, etc., which are various computing devices that run software. Each computing device may include one or more cores for executing software instructions to perform calculations or processing. The processor may be a separate semiconductor chip or integrated with other circuits into a single semiconductor chip. For example, it may be integrated with other circuits (such as encoding / decoding circuits, hardware acceleration circuits, or various bus and interface circuits) to form a System-on-a-Chip (SoC), or it may be integrated as a built-in processor within an ASIC. The ASIC with the integrated processor may be packaged separately or together with other circuits. In addition to the cores for executing software instructions to perform calculations or processing, the processor may further include necessary hardware accelerators, such as field-programmable gate arrays (FPGAs), PLDs (programmable logic devices), or logic circuits that implement dedicated logic operations.

[0096] The memory in the embodiments of this application may include at least one of the following types: read-only memory (ROM) or other types of static storage devices capable of storing static information and instructions; random access memory (RAM) or other types of dynamic storage devices capable of storing information and instructions; or electrically erasable programmable read-only memory (EEPROM). In some scenarios, the memory may also be a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0097] This application also provides a computer-readable storage medium including instructions that, when run on a computer, cause the computer to perform any of the methods described above.

[0098] This application also provides a computer program product containing instructions that, when run on a computer, cause the computer to perform any of the methods described above.

[0099] This application also provides a chip including a processor and an interface circuit. The interface circuit is coupled to the processor. The processor is used to run computer programs or instructions to implement the above-described method. The interface circuit is used to communicate with other modules outside the chip.

[0100] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software programs, implementation can be, in whole or in part, in the form of a computer program product. This computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device containing one or more servers, data centers, etc., that can be integrated with the medium. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state disks (SSDs)).

[0101] Although this application has been described herein in conjunction with various embodiments, those skilled in the art, by reviewing the accompanying drawings, disclosure, and appended claims, will understand and implement other variations of the disclosed embodiments in carrying out the claimed application. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple instances. A single processor or other unit can implement several functions listed in the claims. While different dependent claims may recite certain measures, this does not mean that these measures cannot be combined to produce good results.

[0102] Although this application has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made thereto without departing from the spirit and scope of this application. Accordingly, this specification and drawings are merely exemplary illustrations of this application as defined by the appended claims, and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from the spirit and scope of this application. Thus, if such modifications and modifications of this application fall within the scope of the claims of this application and their equivalents, this application is also intended to include such modifications and modifications.

Claims

1. A high-power high-pressure xenon lamp pre-combustion method, applied to a high-pressure xenon lamp pre-combustion system, characterized in that, The high-pressure xenon lamp pre-ignition system includes: a rectifier circuit, an LCC resonant converter, and a voltage multiplier circuit; the method includes: Based on the minimum trigger voltage requirement of the xenon lamp and the characteristics of the voltage multiplier circuit, calculate the voltage multiplier capacitor; Based on the dynamic resistance characteristics of the xenon lamp pre-ignition maintenance state and the basic parameters of the LCC resonant converter, the control parameters of the LCC resonant converter are calculated. Calculate the adaptive voltage divider resistor based on the withstand voltage requirements during high-voltage triggering and the impedance matching requirements during pre-ignition maintenance; Based on the voltage multiplier capacitor, the control parameters of the LCC resonant converter, and the adaptive voltage divider resistor, the circuit topology of the high-pressure xenon lamp pre-ignition system is realized and the pre-ignition operation is performed.

2. The method according to claim 1, characterized in that, The LCC resonant converter is deployed in the front stage of the circuit combination, the voltage doubler circuit is deployed in the back stage of the circuit combination, and the voltage doubler circuit is connected to the secondary side of the LCC resonant converter. Under no-load conditions, the maximum output voltage of the voltage multiplier circuit is expressed as: ； This indicates the maximum output voltage; This indicates the multiplier of the voltage multiplier circuit; This represents the peak value of a single-stage input voltage in the voltage multiplier circuit. The voltage drop of the voltage multiplier circuit is expressed as: ； This indicates the voltage drop; This indicates the output current of the voltage multiplier rectifier circuit in the voltage multiplier circuit; This represents the branch resonant frequency of the LCC resonant converter; This refers to a single-stage capacitor in the voltage multiplier circuit; Under load, the maximum output voltage of the voltage multiplier circuit is expressed as: ； The output voltage drop impedance of the voltage doubler rectifier circuit is expressed as follows: ； This indicates the output voltage drop impedance; The ripple of the output voltage of the voltage doubler rectifier circuit is expressed as follows: This refers to the ripple; The calculation of the voltage multiplier capacitor, based on the minimum trigger voltage requirement of the xenon lamp and the characteristics of the voltage multiplier circuit, includes: The voltage multiplier capacitor is calculated based on the voltage multiplier factor, the output current of the voltage multiplier rectifier circuit, the branch resonant frequency, and the ripple of the output voltage of the voltage multiplier rectifier circuit; the voltage multiplier capacitor is expressed as: ； The voltage multiplier capacitor is selected such that, under load, the maximum output voltage of the voltage multiplier circuit is greater than the minimum trigger voltage of the xenon lamp.

3. The method according to claim 1, characterized in that, The branch resonant frequency of the LCC resonant converter is expressed as: ； This represents the branch resonant frequency of the LCC resonant converter; This represents the resonant inductance of the LCC resonant converter; This represents the resonant capacitance of the LCC resonant converter; The main resonant frequency of the LCC resonant converter is expressed as: ； This represents the main resonant frequency of the LCC resonant converter; This indicates the switching frequency of the LCC resonant converter; This represents the normalized frequency of the LCC resonant converter; The equivalent AC impedance of the primary side of the high-frequency transformer in the LCC resonant converter is expressed as: ； This represents the equivalent AC impedance; This indicates the turns ratio of the high-frequency transformer in the LCC resonant converter; This indicates the maintaining resistance of the xenon lamp in the pre-ignition state; This indicates the sustaining current of the xenon lamp in the pre-ignition state; This indicates the sustaining voltage of the xenon lamp in the pre-ignition state; The resonant capacitance ratio of the LCC resonant converter is expressed as follows: ； This indicates the resonant capacitance ratio; This represents the clamping capacitance of the LCC resonant converter; The normalized frequency is expressed as: ； The current gain of the LCC resonant converter is expressed as follows: ； This indicates the current gain; This represents the resonant cavity angular frequency of the LCC resonant converter; This represents the input voltage of the LCC resonant converter; The control parameters of the LCC resonant converter are calculated based on the dynamic resistance characteristics of the xenon lamp pre-ignition maintenance state and the basic parameters of the LCC resonant converter, including: The transformer turns ratio is calculated based on the input voltage of the LCC resonant converter and the sustaining voltage of the xenon lamp in the pre-ignition state. The transformer turns ratio is expressed as: ； The resonant inductance is calculated based on the resonant capacitance ratio, the resonant cavity angular frequency, and the current gain; the resonant inductance is expressed as: ； The resonant capacitance is calculated based on the resonant inductance and the main circuit resonant frequency; the resonant capacitance is expressed as: 。 4. The method according to claim 3, characterized in that, The switching frequency of the LCC resonant converter satisfies: 。 5. The method according to claim 4, characterized in that, Also includes: The impedance change of the xenon lamp is monitored in real time, and the switching frequency of the LCC resonant converter is dynamically adjusted through a PID algorithm to maintain the current deviation within a preset range.

6. The method according to claim 1, characterized in that, The calculation of the adaptive voltage divider resistor based on the withstand voltage requirements during high-voltage triggering and the impedance matching requirements during pre-ignition maintenance includes: The adaptive voltage divider resistor is calculated based on the high-voltage trigger voltage and the resistance of the xenon lamp before it is lit; the adaptive voltage divider resistor satisfies: ； This refers to the adaptive voltage divider resistor; This indicates the high-voltage trigger voltage; This indicates the resistance before the light is turned on.

7. The method according to claim 6, characterized in that, The adaptive voltage divider resistor is a combination of a high-voltage glass glaze resistor and a metal film resistor.

8. The method according to claim 1, characterized in that, The voltage multiplier circuit adopts a Cockcroft-Walton topology, and the voltage rating of each capacitor stage meets the following requirements: ； This represents the peak value of a single-stage input voltage in the voltage multiplier circuit. This represents the input voltage of the LCC resonant converter; The 20% margin design addresses voltage spikes and extends capacitor life.

9. The method according to claim 1, characterized in that, The transformer of the LCC resonant converter uses a nanocrystalline magnetic core.

10. A high-power high-pressure xenon lamp pre-combustion device, applied to a high-pressure xenon lamp pre-combustion system, characterized in that, The high-pressure xenon lamp pre-ignition system includes: a rectifier circuit, an LCC resonant converter, and a voltage multiplier circuit; the device includes: a processing unit; The processing unit is used to calculate the voltage multiplier capacitor based on the minimum trigger voltage requirement of the xenon lamp and the characteristics of the voltage multiplier circuit. The processing unit is also used to calculate the control parameters of the LCC resonant converter based on the dynamic resistance characteristics of the xenon lamp pre-ignition maintenance state and the basic parameters of the LCC resonant converter. The processing unit is also used to calculate the adaptive voltage divider resistor based on the withstand voltage requirements during high-voltage triggering and the impedance matching requirements during pre-ignition maintenance. The processing unit is also used to realize the circuit topology of the high-pressure xenon lamp pre-ignition system and perform pre-ignition operation according to the voltage multiplier capacitor, the control parameters of the LCC resonant converter and the adaptive voltage divider resistor.

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