Low-frequency high-power signal continuous transmitting system, method and equipment and storage medium

Through the parallel power amplification synthesis system and power synthesis control system, the redundancy capability of the remaining power amplification unit is automatically allocated, which solves the problem of output power drop in low-frequency high-power transmitters when the power amplification module fails, and improves the continuous working reliability of the system .

CN119210478AActive Publication Date: 2024-12-27WUHAN SHIP COMM RES INST (NO 722 RES INST OF CHINA STATE SHIPBUILDING CORP)
View PDF 5 Cites 0 Cited by

Patent Information

Application Number
CN202411291772.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-14
Publication Date
2024-12-27
Estimated Expiration
2044-09-14

AI Technical Summary

Technical Problem

When the power amplifier module fails, existing low-frequency high-power transmitters usually need to shut down and replace the module or reduce the transmission power, which affects the reliability of communication and navigation.

Method used

The power amplification synthesis system is adopted, and the high-voltage DC power supply and output transformer are connected in parallel through multiple power amplification units. The power synthesis control system is used to monitor and automatically disconnect the power supply and output switch of the fault unit when a fault occurs, ensuring that the remaining units bear additional load. , keep the total output power continuous and unchanged.

Benefits of technology

It improves the reliability of the low-frequency high-power signal continuous transmission system, avoids the output power drop caused by the failure of a single power amplifier unit under series power synthesis, and ensures the continuous execution of communication navigation tasks.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119210478A_ABST
    Figure CN119210478A_ABST
Patent Text Reader

Abstract

The invention discloses a low-frequency high-power signal continuous transmitting system, which comprises a high-voltage direct-current power supply, a signal processing unit, a plurality of power amplification units, a plurality of output transformers, a plurality of power switches, a plurality of output switches, a parallel operation bus and a power synthesis system, the signal processing unit is connected with all the power amplification units; the high-voltage direct-current power supply is connected with the power amplification units through the power switches, and each power amplification unit is connected with one power switch; each power amplification unit is connected with an output transformer, each output transformer is connected with an output switch, all the output switches are connected with a parallel operation bus, and the parallel operation bus is used for being connected with an antenna; and each power amplification unit is connected with the output transformer. The invention further discloses a low-frequency high-power signal continuous transmitting system and method, corresponding equipment and a storage medium. The continuous working reliability of the launching system is improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present application relates to the field of low-frequency communication technology, and more specifically, to a low-frequency high-power signal continuous transmission system, method, device and storage medium. Background Art

[0002] Low-frequency (10kHz to 100kHz) radio signals propagate in the Earth-ionosphere waveguide. They are stable, unaffected by nuclear explosions and ionosphere disturbances, and have low attenuation in the atmosphere. They are suitable for long-distance and underwater communication and navigation. Ground-based fixed low-frequency transmitters are large in scale and expensive to build. Low-frequency transmission power is usually 200kW to 2000kW. To ensure reliable communication and navigation, high-power transmission reliability is extremely important.

[0003] Existing low-frequency high-power transmitters are usually designed to output power in series, and have the ability to reduce power when a power module fails. When a power amplifier module fails, the method of disconnecting the failed power amplifier module is usually adopted, so that other power amplifier modules can continue to be used with reduced transmission power; when the failure is more serious or there are many damaged power amplifier modules, it is necessary to shut down and replace them with spare power amplifier modules before continuing to transmit; both of the above practices will affect the execution of communication and navigation tasks and the reliability of low-frequency high-power transmission. Summary of the invention

[0004] In response to at least one defect or improvement need in the prior art, the present invention provides a low-frequency, high-power signal continuous transmission system, method, device and storage medium, which will solve at least one of the problems existing in the above-mentioned background technology.

[0005] To achieve the above object, according to a first aspect of the present invention, there is provided a low-frequency high-power signal continuous transmission system, comprising a high-voltage DC power supply, a signal processing unit, a plurality of power amplification units, a plurality of output transformers, a plurality of power switches, a plurality of output switches, a parallel bus and a power synthesis control system;

[0006] The number of the power amplification units, output transformers, power switches and output switches is the same;

[0007] The signal processing unit is connected to all the power amplifying units and is used to input the low-frequency excitation signal input from the outside into each of the power amplifying units respectively, and the low-frequency excitation signal input into each of the power amplifying units is consistent;

[0008] The high-voltage DC power supply is connected to a plurality of power amplification units via a plurality of power switches, and each of the power amplification units is connected to a power switch respectively;

[0009] Each power amplification unit is respectively connected to an output transformer, each output transformer is respectively connected to an output switch, and all output switches are connected to a parallel bus, and the parallel bus is used to connect to an antenna to transmit the processed low-frequency signal;

[0010] Each power amplification unit is respectively connected to the power synthesis control system for monitoring the operating status of each power amplifier.

[0011] It includes a high-voltage DC power supply, a signal processing unit, a plurality of power amplification units, a plurality of output transformers, a plurality of power switches, a plurality of output switches, a parallel bus and a power synthesis control system;

[0012] The number of the power amplification units, output transformers, power switches and output switches is the same;

[0013] The signal processing unit is connected to all the power amplifying units and is used to input the low-frequency excitation signal input from the outside into each of the power amplifying units respectively, and the low-frequency excitation signal input into each of the power amplifying units is consistent;

[0014] The high-voltage DC power supply is connected to a plurality of power amplification units via a plurality of power switches, and each of the power amplification units is connected to a power switch respectively;

[0015] Each power amplification unit is respectively connected to an output transformer, each output transformer is respectively connected to an output switch, and all output switches are connected to a parallel bus, and the parallel bus is used to connect to an antenna to transmit the processed low-frequency signal;

[0016] Each power amplification unit is respectively connected to the power synthesis control system for monitoring the operating status of each power amplifier.

[0017] Furthermore, in the above-mentioned low-frequency high-power signal continuous transmission system, when the power synthesis control system detects that a certain power amplification unit fails, it controls to disconnect the power switch and the output switch connected to the power amplification unit.

[0018] Furthermore, in the above-mentioned low-frequency high-power signal continuous transmission system, the rated power of each power amplification unit is P', there are n power amplification units in total, and the rated power of the low-frequency high-power signal continuous transmission system is P=(n-1)P'.

[0019] Furthermore, in the above-mentioned low-frequency and high-power signal continuous transmission system, the number of the power amplification units is between 3 and 21.

[0020] Furthermore, the rated power of the above-mentioned low-frequency high-power signal continuous transmission system is between 200kW and 2000kW.

[0021] According to a second aspect of the present invention, there is also provided a method for continuously transmitting a low-frequency high-power signal based on the above-mentioned low-frequency high-power signal continuous transmission system, comprising the following steps:

[0022] The signal processing unit distributes the excitation signal from the external exciter into a multi-channel excitation switch signal, and transmits it to each of the power amplification units through optical fibers, and the high-voltage DC power supply supplies power to the power amplification units via the power switch;

[0023] The power amplification unit converts the received excitation signal into an electrical signal and amplifies the power in a switching amplification manner through a high-power H-bridge;

[0024] The output transformer matches the impedance of the power amplifier unit with the impedance of the antenna, reduces the maximum voltage carried by the power amplifier unit, and increases the output voltage;

[0025] The power-amplified signal is transmitted to the antenna via the output switch and the parallel bus for signal transmission.

[0026] Furthermore, in the above-mentioned method for continuously transmitting low-frequency and high-power signals, when a power amplifier unit fails, the power synthesis control system sends a signal to disconnect the power switch and output switch corresponding to the power amplifier unit, so that the failed power amplifier unit is completely disconnected from the signal transmission system.

[0027] According to the third aspect of the present invention, there is also provided a low-frequency, high-power signal continuous transmission device, which includes at least one processing unit and at least one storage unit, wherein the storage unit stores a computer program, and when the computer program is executed by the processing unit, the processing unit executes the steps of any one of the above-mentioned methods.

[0028] According to the fourth aspect of the present invention, a storage medium is also provided, which stores a computer program that can be executed by a low-frequency, high-power signal continuous transmission device. When the computer program is run on the low-frequency, high-power signal continuous transmission device, the low-frequency, high-power signal continuous transmission device executes the steps of any one of the above-mentioned methods.

[0029] According to a fifth aspect of the present invention, there is also provided a computer program product, comprising a computer program, characterized in that when the computer program is executed by a processor, the steps of any of the above-mentioned methods for continuously transmitting low-frequency and high-power signals are implemented.

[0030] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0031] The present invention provides a low-frequency, high-power signal continuous transmission system, which adopts parallel power amplification synthesis. When a single power amplification unit fails and exits, the total power is automatically distributed to the remaining power amplification units, and the total output power is kept continuous and unchanged by relying on the redundant output capacity of the remaining power amplification units, thereby avoiding the problem of output power drop due to a failure of a single power amplification unit in series power synthesis, and improving the reliability of continuous operation of the transmission system. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of a low-frequency high-power signal continuous transmission system provided in an embodiment of the present application;

[0034] Figure 2 A flowchart of a method for continuously transmitting a low-frequency, high-power signal is provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] The terms "first", "second", "third", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0037] Figure 1 A schematic diagram of a low-frequency high-power signal continuous transmission system provided in an embodiment of the present application is shown in FIG. Figure 1As shown, a low-frequency high-power signal continuous transmission system provided in an embodiment of the present application includes a high-voltage DC power supply, a signal processing unit, multiple power amplification units, multiple output transformers, multiple power switches, multiple output switches, a parallel bus and a power synthesis control system;

[0038] The number of power amplifier units, output transformers, power switches and output switches is the same;

[0039] The signal processing unit is connected to all the power amplifying units and is used to input the low-frequency excitation signal input from the outside into each power amplifying unit respectively, and the low-frequency excitation signal input into each power amplifying unit is consistent;

[0040] The high-voltage direct current power supply is connected to a plurality of power amplification units via a plurality of power switches, and each power amplification unit is connected to a power switch respectively;

[0041] Each power amplifier unit is connected to an output transformer, each output transformer is connected to an output switch, all output switches are connected to a parallel bus, and the parallel bus is used to connect to an antenna to transmit the processed low-frequency signal;

[0042] Each power amplification unit is respectively connected to a power synthesis control system for monitoring the operating status of each power amplifier.

[0043] Specifically, the present application provides a low-frequency high-power signal continuous transmission system, which mainly includes a high-voltage DC power supply, a signal processing unit, n power amplifier units (1#, 2#, ..., n#), n output transformers (B1, B2, ..., Bn), n power switches (Ki1, Ki2, ..., Kin), n output switches (Ko1, Ko2, ..., Kon), a parallel bus and a power synthesis control system, and uses output transformer parallel power synthesis. It is obvious that the power amplifier unit, the output transformer, the power switch and the output switch are one-to-one corresponding, and their number is the same.

[0044] The signal processing unit distributes the excitation signal from the exciter into n optical excitation switch signals with dead zones, and transmits them to n power amplification units through optical fibers, thereby eliminating electrical interference between the power amplification units and the signal processing unit.

[0045] Each power amplifier unit first converts the received optical excitation switch signal into an electrical signal, and then amplifies the power in a switch amplification manner through a high-power H-bridge. Optionally, a 1200V withstand voltage and 600A current power amplifier tube can be selected. When the output is 100kW, it can work at 600V voltage and 200A current. It has sufficient power capacity to withstand the power redistribution power fluctuation caused by the failure of a single power amplifier unit, and the instantaneous current surge will not cause an impact on the power amplifier unit.

[0046] The output transformer is used to match the impedance of the power amplifier unit with the antenna impedance. According to the power level, the input-output ratio of the output transformer can be 1:3 to 1:10, which reduces the maximum voltage that the power amplifier unit must carry and increases the output voltage to 1.8kV to 6kV. In order to ensure the balance of the output power of each power amplifier unit, the input-output ratio of n output transformers must be controlled to ±0.2%.

[0047] N power switches are connected to a high-voltage DC power supply, the DC voltages on the n switches are consistent, each power switch, power amplifier unit, output transformer and output switch are connected in series in sequence to form a power amplifier channel, and the secondary terminals of the n power amplifier channels are connected in parallel to the parallel bus and then connected to the antenna device.

[0048] The parallel busbar can choose copper tubes with a diameter of 50mm to 200mm according to the power level, and can withstand low-frequency high power from 200kW to 2000kW.

[0049] To ensure the output balance of the power amplifier unit, the parameters of the n power amplifier units through the n output transformers need to be as consistent as possible. Since the n power amplifier units share a high-voltage DC power supply, the consistency of the output voltage of the n power amplifier units can easily ensure the consistency of the n power amplifier parameters, and the consistency of the output transformer parameters is particularly important.

[0050] The power synthesis control system implements detection of the power amplifier unit and controls the closing and opening of the electronic switch, DC power switch and output switch in the power amplifier unit. When a power amplifier unit fails, the voltage and antenna load loaded on the antenna remain unchanged due to the parallel connection of the secondary of the output transformer, and the full power output power is instantly redistributed evenly to the remaining n-1 groups of power amplifier channels. At this time, the output voltage of the remaining groups of power amplifier units remains unchanged, only the output current increases, and the voltage and antenna load loaded on the antenna device remain unchanged, which does not affect the external output power.

[0051] Since the power amplifier unit is designed with redundancy, that is, the power amplification task that each power amplifier unit can bear is higher than the actual situation, the instantaneous current consumption will not cause an impact on the system. At the same time, after the power synthesis control system monitors the power amplifier unit failure in real time, the power synthesis control system sends a signal to disconnect the electronic switch, DC power switch, and output switch in the power amplifier unit, so that the faulty power amplifier unit is completely separated from the transmission system, blocking the influence of the faulty unit on the antenna load power, and completing the continuous transmission of the signal without power reduction.

[0052] The embodiment of the present application provides a low-frequency, high-power signal continuous transmission system, which adopts parallel power amplification synthesis. When a single power amplification unit fails and exits, the total power is automatically distributed to the remaining power amplification units, and the total output power is kept continuous and unchanged by relying on the redundant output capacity of the remaining power amplification units. This avoids the problem of output power drop due to a failure of a single power amplification unit in series power synthesis, and improves the reliability of continuous operation of the transmission system.

[0053] Optionally, in the low-frequency, high-power signal continuous transmission system provided by the present application, when the power synthesis control system detects that a certain power amplification unit has failed, it controls the power switch and the output switch connected to the power amplification unit to disconnect.

[0054] Optionally, in the low-frequency high-power signal continuous transmission system provided by the present application, the rated power of each power amplification unit is P', there are n power amplification units in total, and the rated power of the low-frequency high-power signal continuous transmission system is P=(n-1)P'.

[0055] Optionally, the low-frequency, high-power signal continuous transmission system provided by the present application has between 3 and 21 power amplification units.

[0056] Optionally, the low-frequency high-power signal continuous transmission system provided in the present application has a rated power of between 200kW and 2000kW.

[0057] The low-frequency high-power signal continuous transmission system provided by the present application is described below with a specific embodiment:

[0058] In one embodiment, when the rated low-frequency transmission power of the system is 500kW, n=6, and the combined output power is 500kW. The output power of each power amplification unit is 83.3kW. When a single power amplification unit fails, it exits. Each power amplification unit relies on redundant output capacity to increase the output power to 100kW. The system can still continue to output 500kW, ensuring continuous transmission of the system's low-frequency, high-power signals.

[0059] The six power switches are connected to a high-voltage DC power supply, and the DC voltages on the six power switches are consistent; the power switches, power amplifier units, output transformers, and output switches are connected in series in sequence to form six groups of power amplifier devices; the six output transformers are connected in parallel through the secondary of the output switches, and are connected to the antenna device after being connected in parallel; the six power amplifier units receive consistent low-frequency excitation signals output by the signal processing unit, and each power amplifier unit can withstand a power amplification capacity of 100kW; the power synthesis control system is connected to the six power switches, the six power amplifier units, and the six output switches.

[0060] The power synthesis control system monitors the power amplifier unit in real time. When it detects that the power amplifier unit receives a low-frequency excitation signal, it sends a signal to control the closure of 6 power switches, 6 electronic switches of the power amplifier units, and 6 output switches, and connects the high-voltage DC power supply to 6 groups of power amplifier devices. The 6 groups of power amplifier devices are connected in parallel through the secondary of the output transformer. Each group of power amplifier devices has an output power of 83.3kW, and the power synthesis of the low-frequency excitation signal is amplified to 500kW and output to the antenna device.

[0061] When a power amplifier unit fails and is detached, since the voltage loaded on the antenna device and the antenna load remain unchanged, the 500kW power amplification task is instantly redistributed evenly to the remaining 5 groups of power amplifier devices, and each group of power amplifier devices has an output power of 100kW; at the same time, the power synthesis control system monitors the power amplifier unit failure in real time, and sends a signal to control the electronic switch, high-voltage DC power supply switch, and output switch in the power amplifier unit to disconnect, so that the faulty power amplifier unit is completely disconnected from the transmission system, blocking the influence of the faulty unit on the antenna load power, and completing the continuous transmission of the signal without power reduction.

[0062] Figure 2 A flow chart of a method for continuously transmitting a low-frequency high-power signal provided in an embodiment of the present application is shown in FIG. Figure 2 As shown, a method for continuously transmitting a low-frequency high-power signal provided in an embodiment of the present application includes the following steps:

[0063] The signal processing unit distributes the excitation signal from the external exciter into a multi-channel excitation switch signal, which is transmitted to each power amplifier unit through an optical fiber, and the high-voltage DC power supply supplies power to the power amplifier unit through a power switch;

[0064] The power amplifier unit converts the received excitation signal into an electrical signal and amplifies the power in a switching amplification manner through a high-power H-bridge;

[0065] The output transformer matches the impedance of the power amplifier unit with the antenna impedance, reduces the maximum voltage carried by the power amplifier unit, and increases the output voltage;

[0066] The power-amplified signal is transmitted to the antenna via the output switch and the parallel bus for signal transmission.

[0067] Optionally, in the method for continuous transmission of low-frequency and high-power signals provided by the present application, when a power amplifier unit fails, the power synthesis control system sends a signal to disconnect the power switch and output switch corresponding to the power amplifier unit, so that the faulty power amplifier unit is completely disconnected from the signaling system.

[0068] The present application also provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the steps of the above method are implemented. The computer-readable storage medium may include, but is not limited to, any type of disk, including a floppy disk, an optical disk, a DVD, a CD-ROM, a micro drive, and a magneto-optical disk, a ROM, a RAM, an EPROM, an EEPROM, a DRAM, a VRAM, a flash memory device, a magnetic card or an optical card, a nanosystem (including a molecular memory IC), or any type of medium or device suitable for storing instructions and / or data.

[0069] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0070] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0071] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some service interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0072] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0073] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0074] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a memory, including a number of instructions to enable a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned memory includes: U disk, read-only memory (ROM), random access memory (RAM), mobile hard disk, disk or optical disk and other media that can store program code.

[0075] A person of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable memory, which can include: a flash drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0076] The above is only an exemplary embodiment of the present disclosure, and the scope of the present disclosure cannot be limited thereto. That is, any equivalent changes and modifications made according to the teachings of the present disclosure are still within the scope of the present disclosure. After considering the specification and practicing the disclosure here, those skilled in the art will easily think of the implementation scheme of the present disclosure. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the technical field not recorded in the present disclosure. The description and examples are regarded as exemplary only, and the scope and spirit of the present disclosure are defined by the claims.

[0077] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-frequency high-power signal continuous transmission system, characterized in that: It includes a high-voltage DC power supply, a signal processing unit, a plurality of power amplification units, a plurality of output transformers, a plurality of power switches, a plurality of output switches, a parallel bus and a power synthesis control system; The number of the power amplification units, output transformers, power switches and output switches is the same; The signal processing unit is connected to all the power amplification units and is used to input the low-frequency excitation signal input from the outside into each of the power amplification units respectively, and the low-frequency excitation signal input into each of the power amplification units is consistent; The high-voltage DC power supply is connected to a plurality of power amplification units via a plurality of power switches, and each of the power amplification units is connected to a power switch respectively; Each power amplification unit is respectively connected to an output transformer, each output transformer is respectively connected to an output switch, all output switches are connected to a parallel bus, and the parallel bus is used to connect to an antenna to transmit the processed low-frequency signal; Each power amplification unit is respectively connected to the power synthesis control system for monitoring the operating status of each power amplifier.

2. The low-frequency high-power signal continuous transmission system as claimed in claim 1, characterized in that: When the power synthesis control system detects that a certain power amplification unit fails, it controls to disconnect the power switch and the output switch connected to the power amplification unit.

3. The low-frequency high-power signal continuous transmission system as claimed in claim 1, characterized in that: The rated power of each power amplification unit is P', there are n power amplification units in total, and the rated power of the low-frequency high-power signal continuous transmission system is P=(n-1)P'.

4. The low-frequency high-power signal continuous transmission system as claimed in claim 1, characterized in that: The number of the power amplification units is between 3 and 21.

5. The low-frequency high-power signal continuous transmission system according to claim 1, characterized in that: The rated power of the low-frequency high-power signal continuous transmission system is between 200kW and 2000kW.

6. A method for continuously transmitting a low-frequency high-power signal based on the low-frequency high-power signal continuous transmitting system as claimed in claim 1, characterized in that: The following steps are involved: The signal processing unit distributes the excitation signal from the external exciter into a multi-channel excitation switch signal, and transmits it to each of the power amplification units through optical fibers, and the high-voltage DC power supply supplies power to the power amplification units via the power switch; The power amplification unit converts the received excitation signal into an electrical signal and amplifies the power in a switching amplification manner through a high-power H-bridge; The output transformer matches the impedance of the power amplifier unit with the impedance of the antenna, reduces the maximum voltage carried by the power amplifier unit, and increases the output voltage; The power-amplified signal is transmitted to the antenna via the output switch and the parallel bus for signal transmission.

7. The method for continuously transmitting a low-frequency high-power signal as claimed in claim 6, characterized in that: When a power amplifier unit fails, the power synthesis control system sends a signal to disconnect the power switch and output switch corresponding to the power amplifier unit, so that the failed power amplifier unit is completely disconnected from the signaling system.

8. A low-frequency high-power signal continuous transmission device, characterized in that: The method comprises at least one processing unit and at least one storage unit, wherein the storage unit stores a computer program, and when the computer program is executed by the processing unit, the processing unit executes the steps of the method according to claims 6 to 7.

9. A storage medium, characterized in that: It stores a computer program executable by a low-frequency high-power signal continuous transmitting device. When the computer program runs on the low-frequency high-power signal continuous transmitting device, the low-frequency high-power signal continuous transmitting device executes the steps of the method described in claims 6 to 7.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method for continuously transmitting a low-frequency and high-power signal as described in claims 6 to 7 are implemented.

Citation Information

Patent Citations

  • Extremely-low-frequency high-power transmitting system

    CN112821899A

  • Very-low-frequency high-power transmitter

    CN203104417U

  • Radiofrequency power amplifier

    CN207603580U

  • High-output power amplifier

    JP2011188269A

  • RF power amplifier parallel redundant system

    US4010426A