High-voltage unit control method and system

Abstract

The invention discloses a high-voltage unit control method and system, and relates to the technical field of anode voltage control. The PSM module power supply comprises a direct current unit, a switch and bypass diodes, wherein 45 bypass diodes of the PSM module power supply are connected in series to form a high-voltage unit; working characteristic parameters of a PSM module power supply are acquired through an analog quantity acquisition module; the digital quantity receiving and transmitting module is used for receiving over-current and over-voltage signals of a PSM module power supply; and the FPGA module drives the PSM control module to control on and off of the PSM module power supply according to the working characteristic parameters of the PSM module power supply and the parameters of the overcurrent or overvoltage signal. According to the invention, the response speed is improved by reducing the ripple frequency of the PSM power supply.

Description

Technical Field

[0001] The present invention belongs to the technical field of anode voltage control, and in particular relates to a high voltage unit control method. Background Art

[0002] The high-power, high-voltage unit powers the ion cyclotron resonance heating system of China's fully superconducting tokamak. This power system's voltage modulation requires real-time parameter adjustments based on changes in the plasma load impedance. The PSM step-modulated power supply operates at 35kV and 150A, with an average output power of 1.5MW to 2MW. Ripple characteristics are a key technical indicator; while ensuring normal operation, the lower the ripple, the better.

[0003] The existing PSM high-voltage unit is composed of 44 normally-on PSM power supplies and one PWM module power supply. The ripple frequency depends on the PWM module power supply frequency, which is generally lower. This results in high ripple in the high-voltage unit, negatively impacting the entire system in several ways. For the load, the ripple is superimposed on the DC output, causing voltage instability, leading to malfunction or performance degradation in devices that rely on a stable power supply. For example, in ion cyclotron resonance heating (ICRH) systems, this can affect transmitter performance and reduce ICR heating efficiency. For the power supply itself, high ripple causes increased voltage and current stress on internal components such as capacitors, inductors, and transistors, increasing power loss. Furthermore, for the control system, high ripple causes unstable power supply output, fluctuating signals fed back to the control system, reducing control accuracy and making it impossible to precisely regulate the output. Ripple also interferes with control system signals, causing the control system to misjudge and take incorrect regulatory measures, impacting system stability. Summary of the Invention

[0004] The object of the present invention is to provide a high voltage unit control method and system thereof.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a high-voltage unit control method, including a high-voltage unit control method, comprising: The PSM module power supply includes a DC unit, a switch and a bypass diode, and the bypass diodes of the forty-five PSM module power supplies are connected in series to form a high-voltage unit; Obtain the working characteristic parameters of the high-voltage unit through the analog quantity acquisition module; The digital transceiver module collects the overcurrent and overvoltage protection signals of the high-voltage unit; The FPGA module adjusts the output voltage and the output power required by the amplifier according to the operating characteristic parameters of the high-voltage unit; when an overcurrent or overvoltage fault occurs in the high-voltage unit, the high-voltage unit is cut off at the hardware level and a signal is sent to the FPGA module to block it at the software level.

[0006] Furthermore, a current sensor is used to detect the current of the high-voltage unit, which is compared with the preset threshold by the LM393 comparator and outputs an overcurrent or overvoltage signal. The digital transceiver module receives the overcurrent or overvoltage signal. If it exceeds the preset threshold, the FPGA module shuts down and blocks the PSM control signal, cutting off the high-voltage unit.

[0007] Furthermore, the operating characteristics include anode voltage Ua, anode current Ia, screen voltage Us, screen current Is, grid voltage Ug, grid current Ig, incident power Pin, and reflected power Pref.

[0008] Furthermore, the analog module uses two groups of LTC2325 chips, each group has four acquisition channels, a total of eight channels, and a sampling rate of 5Mbps, for real-time acquisition of the working characteristic parameters of the high-voltage unit.

[0009] Furthermore, the output power of the high voltage unit is adjusted by a voltage standing wave ratio controller; the voltage standing wave ratio controller is used to maintain the standing wave ratio between 1 and 2; When the standing wave ratio is greater than 1 and less than 2, the power required by the load is kept constant to adjust the output power of the high-voltage unit. When the standing wave ratio is greater than 2 and less than 3, the reflected power is kept constant to adjust the output power. When the standing wave ratio is greater than 3, the output power is set to 0.

[0010] Furthermore, the anode power loss is controlled to be P APD _limit, and at the same time control the screen grid current not to exceed the threshold; Calculate the anode power loss P APD And judge whether it exceeds the threshold P APD If it exceeds the threshold, the output preset power Pset2 and the anode voltage Ua are reduced so that the anode power loss is within the threshold P APD _limit or less; At the same time, it is determined whether the screen current Is exceeds the screen current rated value Is_nom. If so, it is further determined whether it exceeds the limit value Is_limit. If so, the output preset power Pset2 is reduced to keep the screen current Is below the limit value Is_limit. Otherwise, Pset2 is increased to the desired value. Whether to increase the anode voltage Ua is determined by whether the screen current Is exceeds Is_nom+0.5, and ensure that it does not exceed the maximum limit Ua_limit. The maximum anode voltage is 27kV.

[0011] Furthermore, the PSM control module includes a PSM module drive controller, which has a built-in FPGA algorithm program that controls the level of the IO pin according to demand and implements the execution of the PSM control module opening and closing signals; According to the required anode voltage, the output duty cycle of each PSM module power supply is calculated and the phase shift control of the PSM module power supply is performed.

[0012] Anode voltage control system, including control unit and high voltage unit: The high voltage unit is formed by the power supply of forty-five PSM modules; The control unit includes: Analog quantity acquisition module, which includes analog-to-digital conversion control circuit and signal conditioning circuit, is used to collect anode voltage Ua, anode current Ia, screen grid voltage Us, screen grid current Is, gate voltage Ug, gate current Ig, incident power Pin and reflected power Pref signals; Digital transceiver module, which is used to receive fault signals such as overcurrent and overvoltage of the high-voltage unit; The PSM control module is used to drive the PSM module power on and off to adjust the anode voltage; The Soc FPGA module is used to process the analog quantity collected by the analog quantity acquisition module, read the status of the PSM module power supply of the digital quantity transceiver module, control the power on and off of the PSM module, and interact with the signals between the transmitter.

[0013] Furthermore, the high-voltage unit also includes a high-voltage resistance-capacitance measurement unit, a current sensor, and a current overcurrent protection module. The high-voltage resistance-capacitance measurement unit is used to detect the voltage of the high-voltage unit, and the current sensor is used to detect the current of the high-voltage unit. The current of the high-voltage unit is compared by the current overcurrent protection module, and the compared parameter signal is transmitted to the digital transceiver module. If an abnormality occurs, the abnormal signal is sent to the PSM control module.

[0014] Furthermore, it also includes a transmitter and a soft start cabinet, the transmitter including a reset module, a switch control module and a soft start circuit; Reset module: When the high-voltage unit needs to be restarted, the transmitter needs to reset the FPGA; Switch control module; used for on / off control of high voltage unit; The soft start cabinet is used to control the size of the inrush current and the slope of the output voltage rise when the switching power supply is started. If faults such as overvoltage and overcurrent occur, the protection mechanism is triggered and the control system is in a blocked state.

[0015] The present invention has the following beneficial effects: The present invention improves the response speed by reducing the ripple frequency of the PSM power supply, reduces voltage fluctuations, and enhances the dynamic response capability of the system; it has an overvoltage and overcurrent protection mechanism, which can quickly cut off the anode power supply system from the hardware level to ensure the safety of the power supply and control system; the voltage standing wave ratio controller can accurately and quickly adjust the output power of the high-voltage unit, improve the system stability and response speed, and is suitable for high-precision industrial scenarios; the anode voltage controller can adjust the output power and anode voltage according to the anode power loss and curtain current, ensure the normal operation of the tetrode and optimize its working efficiency; the PSM module drive controller adopts a phase-shift control strategy to increase the ripple frequency, reduce the requirements for energy storage components, and improve the power supply output quality; the analog acquisition module adopts two groups of LTC2325 chips with a high sampling frequency, and can accurately obtain working characteristic parameters; the overall system is modularly designed, has redundancy and maintainability, and is suitable for high-power, high-demand industrial application scenarios.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is the block diagram of the anode voltage control system; Figure 2 This is the power cascade diagram of the high-voltage unit PSM module; Figure 3 This is the voltage standing wave ratio (VSWR) flow chart; Figure 4 is the flow chart of the anode voltage controller; Figure 5 Schematic diagram of the phase-shift control signal of the PSM module drive controller. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] This invention is a high-voltage unit control method. Its core goal is to achieve high-precision, high-reliability, and high-efficiency operation of the high-voltage unit through multi-module coordinated control. This method uses 45 PSM modules connected in series to form a high-voltage unit. This unit is combined with an analog acquisition module, a digital transceiver module, and an FPGA control module to form a complete closed-loop control system.

[0021] The PSM module phase-shift control strategy significantly reduces the ripple frequency and improves the dynamic response capability of the power supply.

[0022] The integrated voltage standing wave ratio (VSWR) intelligent adjustment function automatically switches to the optimal control mode under different VSWR conditions to ensure stable system operation.

[0023] An anode voltage controller is designed to adjust the output parameters in real time according to the anode power loss and screen current, thus optimizing the working efficiency while ensuring the normal operation of the tetrode.

[0024] Equipped with hardware-level overvoltage and overcurrent protection circuitry, it quickly cuts off power in the event of a fault, ensuring system safety. This technology is particularly suitable for high-power, high-precision industrial scenarios, such as the ion cyclotron resonance heating system in China's fully superconducting tokamak device. It offers significant advantages such as low ripple, fast response, comprehensive protection, and precise regulation, providing an effective solution for the optimized design of high-power, high-voltage units.

[0025] See also Figure 1 and Figure 2 As shown, the anode voltage control method.

[0026] The high-voltage unit output is formed by 45 identical PSM modules connected in series. Each PSM module includes a DC power supply, a switch S, and a bypass diode D. When the switch S is disconnected, the power supply unit provides continuous current to the main power circuit through the bypass diode. Shutting down any power supply unit does not interrupt the output of the entire power supply.

[0027] In addition, the control unit includes an FPGA control module, a PSM driver module, a digital transceiver module, and an analog acquisition module.

[0028] The FPGA module uses SoC FPGA (system-level programmable gate array) as the core to process the collected analog signals, read the power status of the PSM module of the digital transceiver module, drive the PSM module power on and off, and interact with the transmitter's soft start and global start signals.

[0029] The analog module uses two groups of LTC2325 chips, each with four acquisition channels and a sampling frequency of 5Mbps, to collect anode voltage, anode current, screen voltage, screen current, gate current, gate voltage, incident power and reflected power.

[0030] The PSM driver module receives the control signal from the SoC FPGA and drives the HFBR1414 optical fiber module via the SN75452 chip, converting the electrical signal into an optical signal, thereby driving the PSM module power supply of the high-voltage unit to turn on and off. At the same time, it receives the PSM power status signal (PSM on and off) from the HFBR2412, which is retained by the SN75452 and then passed to the SoCFPGA IO for reading.

[0031] The digital transceiver module collects the overcurrent and overvoltage signals of the high-voltage unit. Once the LM393 comparator detects an overcurrent or overvoltage fault, it compares it with the preset threshold and outputs an overcurrent or overvoltage protection signal. In turn, it shuts down and blocks the PSM drive signal from the bottom layer, cuts off the high-voltage unit, and transmits the fault signal to the FPGA.

[0032] The overvoltage and overcurrent protection circuit can quickly cut off the anode power supply system from the hardware level to ensure the safety of the power supply and control system.

[0033] The high-voltage unit and the control unit are isolated by optical fiber, and the acquisition and control signals of the low-voltage control unit are isolated to protect the control unit from high-voltage interference.

[0034] like Figure 3 As shown in the figure, the larger the voltage standing wave ratio (VSWR), the greater the reflected power of the transmitter, and the greater the damage to the system. Therefore, the voltage standing wave ratio controller is designed to maintain the voltage standing wave ratio as low as possible.

[0035] The output power of the high voltage unit is adjusted by the voltage standing wave ratio controller; the voltage standing wave ratio controller is used to maintain the standing wave ratio between 1 and 2.

[0036] Voltage standing wave ratio controller, the voltage standing wave ratio controller is used to adjust the output power of the high voltage unit, where ( ), the incident power is P in and the reflected power is P ref .

[0037] When the standing wave ratio is greater than 1 and less than 2, the output power is adjusted to keep the power required by the load constant. When the standing wave ratio is greater than 2 and less than 3, the output power is adjusted to keep the reflected power constant. When the standing wave ratio is greater than 3, the output power is set to 0.

[0038] Process of the voltage standing wave ratio (VSWR) controller: When 1 < VSWR < 2, the output power Pset is adjusted according to the constant load power. When 2 < VSWR < 3, the output power Pset is adjusted according to the constant reflected power. When VSWR > 3, the output power Pest is 0. When the output power is 90% of the forward power, the output power is adjusted according to VSWR and the constant load power, Pset = Pset1. When the load conditions change drastically, the output power is set by the internal reference power, Pset = Pset2, to ensure the stability of other operating parameters. The system determines whether the actual power is within the target range. If it meets the requirement, the setting of the anode voltage controller is adopted; otherwise, the setting of the VSWR controller is adopted, so as to achieve precise and rapid adjustment of the output power of the high-voltage unit, improve the system stability and response speed, and is applicable to industrial scenarios with high requirements for power adjustment accuracy.

[0039] As Figure 4 shown, by setting the anode voltage controller and adjusting the output power and anode voltage according to the anode power loss and screen grid current, it can ensure that the tetrode optimizes its working efficiency under normal operating conditions.

[0040] Increase or decrease the anode voltage according to the screen grid current. When the screen grid current exceeds the upper limit, decrease the anode voltage. When the screen grid current is at a normal level, increase the anode voltage.

[0041] Control the anode power loss to be below P APD _limit, and at the same time control the screen grid current not to exceed the threshold value. Specifically, calculate the anode power loss P APD and determine whether it exceeds the threshold value P APD _limit. If it exceeds, reduce the output preset power Pset2 and the anode voltage Ua so that the anode power loss is below the threshold value P APD _limit.

[0042] At the same time, determine whether the screen grid current Is exceeds the rated screen grid current Is_nom. If it exceeds, further determine whether it exceeds the limit value Is_limit. If it exceeds the limit value Is_limit, reduce the output preset power Pset2 so that the screen grid current Is is maintained below the limit value Is_limit. Otherwise, increase Pset2 to the expected value.

[0043] Determine whether to increase the anode voltage Ua according to whether the screen grid current Is exceeds Is_nom + 0.5, and ensure that it does not exceed the maximum limit Ua_limit, so as to achieve precise adjustment and protection of the output of the high-voltage unit. The maximum anode voltage is 27 kV.

[0044] As Figure 5 shown, the PSM module drive controller: The PSM control module includes a PSM module drive controller. The PSM module drive controller has a built-in FPGA algorithm program that controls the level of the IO pin according to demand and implements the execution of the PSM control module opening and closing signals.

[0045] According to the required anode voltage, the duty cycle required to be output by each module is calculated, and the phase shift control of the PSM module power supply is performed to increase the ripple frequency.

[0046] Taking 6 modules as an example, Figure 5 (a) is a line graph of the PSM module driver control signal. The control signal frequency of the six modules is 1kHz, the duty cycle is 66.7%, the second module lags behind the first module by 1 / 6ms, and so on. Each module lags behind the previous module by 1 / 6ms. The six modules are connected in series and the output voltage is superimposed as shown in the figure. Figure 5 As shown in (b), the output voltage of a single module is U0, and the average value after superposition is 5.5U0. The output voltage ripple is the voltage of a single module U0, the ripple frequency is 6kHz, and the duty cycle is 50%.

[0047] By adopting a phase-shift control strategy and setting each PSM module to have the same delay interval and voltage output duty cycle, phase-shift control of the PSM module power supply is achieved, thereby increasing the ripple frequency of the high-voltage unit, reducing the requirements for energy storage components, and improving the power output quality.

[0048] Anode voltage control system, including: The PSM module power supply includes a DC unit, a switch and a bypass diode. Forty-five PSM module power supplies are connected in series to form a high-voltage unit. Obtain the operating characteristic parameters of the PSM module power supply through the analog acquisition module; The digital transceiver module sends overcurrent and overvoltage signals to the PSM module power supply; The FPGA module drives the PSM control module to control the power supply of the PSM module to turn on and off according to the operating characteristic parameters, overcurrent and overvoltage signal parameters of the PSM module power supply.

[0049] A current sensor is used to detect the current of the high-voltage unit. The current is compared with the preset threshold by the LM393 comparator and an overcurrent or overvoltage signal is output. The digital transceiver module receives the overcurrent or overvoltage signal. If it exceeds the preset threshold, the FPGA module shuts down and blocks the PSM drive signal, cutting off the high-voltage unit.

[0050] Furthermore, the operating characteristics include anode voltage, anode current, screen voltage, screen current, grid current, grid voltage, incident power, and reflected power.

[0051] Furthermore, the analog module uses two groups of LTC2325 chips, each group has four acquisition channels and a sampling frequency of 5Mbps.

[0052] Furthermore, the anode power loss is controlled to be P APD _limit, while controlling the screen grid current not to exceed the threshold.

[0053] Furthermore, the PSM control module includes a PSM module drive controller. The PSM module drive controller has a built-in FPGA algorithm program that controls the level of the IO pin according to demand and implements the execution of the PSM control module opening and closing signals.

[0054] According to the required anode voltage, the output duty cycle of each PSM module power supply is calculated and the phase shift control of the PSM module power supply is performed.

[0055] The anode voltage control system includes a control unit and a high-voltage unit, wherein the control unit can obtain the status and parameters of the high-voltage unit in real time and control and protect the high-voltage unit as needed.

[0056] The high voltage unit is formed by connecting 45 PSM modules in series.

[0057] The control unit includes: Analog quantity acquisition module, which includes analog-to-digital conversion control circuit and signal conditioning circuit, is used to collect anode voltage, anode current, screen grid voltage, screen grid current, grid current, grid voltage, incident power and reflected power signals; Digital transceiver module, which is used to collect overcurrent and overvoltage signals of the high-voltage unit; PSM control module, the PSM control module is a hardware circuit used to control the opening and closing of the PSM power supply. The PSM control module includes a PSM module drive controller. The PSM module drive controller has a built-in FPGA algorithm program that controls the high and low levels of the IO pins according to requirements to realize the execution of the PSM control module opening and closing signals.

[0058] The SoC FPGA module is used to process the analog quantity collected by the analog quantity acquisition module, read the power status of the PSM module of the digital quantity transceiver module, drive the PSM module power on and off, and interact with the signals between the transmitter.

[0059] Furthermore, the high-voltage unit also includes a high-voltage resistance-capacitance measurement unit, a current sensor, and a current overcurrent protection module. The high-voltage resistance-capacitance measurement unit is used to detect the voltage of the high-voltage unit, and the current sensor is used to detect the current of the high-voltage unit.

[0060] The current of the high-voltage unit is compared by the current overcurrent protection module, and the compared parameter signal is transmitted to the digital transceiver module. If an abnormality is generated after the comparison, the abnormal signal will be sent to the PSM control module.

[0061] The anode voltage control system further comprises a transmitter and a soft start cabinet. The transmitter comprises a reset module, a switch control module and a soft start circuit.

[0062] Reset module: When the anode high voltage unit needs to be restarted, the transmitter is required to reset the FPGA.

[0063] Switch control module; used for on and off control of high voltage units.

[0064] The soft start cabinet is used to control the size of the inrush current and the slope of the output voltage rise when the switching power supply is started. If faults such as overvoltage and overcurrent occur, the protection mechanism is triggered and the control system is in a blocked state.

[0065] It is worth noting that in the above system embodiment, the various units included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0066] In addition, a person skilled in the art will understand that all or part of the steps in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a program, and the corresponding program can be stored in a computer-readable storage medium, such as a ROM / RAM, a disk or an optical disk.

[0067] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high voltage unit control method, characterized in that: include: The PSM module power supply includes a DC unit, a switch and a bypass diode, and the bypass diodes of the forty-five PSM module power supplies are connected in series to form a high-voltage unit; Obtain the working characteristic parameters of the high-voltage unit through the analog quantity acquisition module; The digital transceiver module collects the overcurrent and overvoltage protection signals of the high-voltage unit; The FPGA module adjusts the output voltage and the output power required by the amplifier according to the operating characteristic parameters of the high-voltage unit; when an overcurrent or overvoltage fault occurs in the high-voltage unit, the high-voltage unit is cut off at the hardware level and a signal is sent to the FPGA module to block it at the software level.

2. The high voltage unit control method according to claim 1, characterized in that: A current sensor is used to detect the current of the high-voltage unit, which is compared with the preset threshold by the LM393 comparator and outputs an overcurrent or overvoltage signal. The digital transceiver module receives the overcurrent or overvoltage signal. If it exceeds the preset threshold, the FPGA module shuts down and blocks the PSM control signal, cutting off the high-voltage unit.

3. The high voltage unit control method according to claim 1 or 2, characterized in that: The operating characteristics include anode voltage Ua, anode current Ia, screen voltage Us, screen current Is, grid voltage Ug, grid current Ig, incident power Pin and reflected power Pref.

4. The high voltage unit control method according to claim 3, characterized in that: The analog module uses two groups of LTC2325 chips, each with four acquisition channels, a total of eight channels, with a sampling rate of 5Mbps, for real-time acquisition of the working characteristic parameters of the high-voltage unit.

5. The high voltage unit control method according to claim 3, characterized in that: The output power of the high-voltage unit is adjusted by the voltage standing wave ratio controller; the voltage standing wave ratio controller is used to maintain the standing wave ratio between 1 and 2; When the standing wave ratio is greater than 1 and less than 2, the power required by the load is kept constant to adjust the output power of the high-voltage unit. When the standing wave ratio is greater than 2 and less than 3, the reflected power is kept constant to adjust the output power. When the standing wave ratio is greater than 3, the output power is set to 0.

6. The high voltage unit control method according to claim 3, characterized in that: Control anode power loss at P APD _limit, and at the same time control the screen grid current not to exceed the threshold; Calculate the anode power loss P APD And judge whether it exceeds the threshold P APD If it exceeds the threshold, the output preset power Pset2 and the anode voltage Ua are reduced so that the anode power loss is within the threshold P APD _limit or less; At the same time, it is determined whether the screen current Is exceeds the screen current rated value Is_nom. If so, it is further determined whether it exceeds the limit value Is_limit. If so, the output preset power Pset2 is reduced to keep the screen current Is below the limit value Is_limit. Otherwise, Pset2 is increased to the desired value. Whether to increase the anode voltage Ua is determined by whether the screen current Is exceeds Is_nom+0.5, and ensure that it does not exceed the maximum limit Ua_limit. The maximum anode voltage is 27kV.

7. The high voltage unit control method according to claim 3, characterized in that: The PSM control module includes a PSM module drive controller. The PSM module drive controller has a built-in FPGA algorithm program that controls the level of the IO pin according to demand and implements the execution of the PSM control module opening and closing signals; According to the required anode voltage, the output duty cycle of each PSM module power supply is calculated and the phase shift control of the PSM module power supply is performed.

8. Anode voltage control system, characterized in that, Including control unit and high voltage unit: The high voltage unit is formed by the power supply of forty-five PSM modules; The control unit comprises: An analog quantity acquisition module, comprising an analog-to-digital conversion control circuit and a signal conditioning circuit, for acquiring the anode voltage Ua, anode current Ia, screen grid voltage Us, screen grid current Is, gate voltage Ug, gate current Ig, incident power Pin, and reflected power Pref signals; A digital transceiver module, which is used to receive fault signals such as overcurrent and overvoltage of the high-voltage unit; The PSM control module is used to drive the PSM module power on and off to adjust the anode voltage; The Soc FPGA module is used to process the analog quantity collected by the analog quantity acquisition module, read the status of the PSM module power supply of the digital quantity transceiver module, control the power on and off of the PSM module, and interact with the signals between the transmitter.

9. The anode voltage control system according to claim 8, characterized in that: The high-voltage unit also includes a high-voltage resistance-capacitance measurement unit, a current sensor, and a current overcurrent protection module. The high-voltage resistance-capacitance measurement unit is used to detect the voltage of the high-voltage unit, and the current sensor is used to detect the current of the high-voltage unit. The current of the high-voltage unit is compared by the current overcurrent protection module, and the compared parameter signal is transmitted to the digital transceiver module. If an abnormality occurs, the abnormal signal is sent to the PSM control module.

10. The anode voltage control system according to claim 8, characterized in that: It also includes a transmitter and a soft start cabinet, wherein the transmitter includes a reset module, a switch control module and a soft start circuit; Reset module: When the high-voltage unit needs to be restarted, the transmitter needs to reset the FPGA; Switch control module; Used for on / off control of high voltage units; The soft start cabinet is used to control the size of the inrush current and the slope of the output voltage rise when the switching power supply is started. If faults such as overvoltage and overcurrent occur, the protection mechanism is triggered and the control system is in a blocked state.

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