Lightweight High-Power Ground-to-Air Electromagnetic Detection Power Supply System and Method

Abstract

This application belongs to the field of deep-sea electromagnetic reconnaissance technology, specifically a lightweight, high-power electromagnetic reconnaissance power supply system and method. The high-power vehicle-mounted power supply uses two parallel lithium battery units to provide short-duration high-power transmission current to the transmitter. A controller is used to acquire the reconnaissance task set by the transmitter, set a reference voltage according to the reconnaissance task, acquire the DC bus voltage, and obtain a current modulation signal by comparing the DC bus voltage with the reference voltage. It also acquires the output current of each lithium battery unit and outputs a control signal to compensate the output current of each lithium battery unit based on the current modulation signal. This application achieves the stability of the power supply system during different instantaneous high-power outputs in the high-power electromagnetic reconnaissance system. It achieves stable power supply voltage output when adjusting the output voltage and handling sudden increases or decreases in load current as needed.

Description

Technical Field

[0001] This application belongs to the field of deep-sea electromagnetic detection technology, specifically a lightweight, high-power electromagnetic detection power supply system and method. Background Technology

[0002] Geophysical exploration methods, as pioneering technologies for green mineral exploration, are the most effective means of detecting underground structural information. Among them, electromagnetic methods can accurately identify and locate metallic mineral deposits based on the electrical differences of different types of underground rocks and minerals, playing a leading role in the exploration of strategic metallic minerals.

[0003] In recent years, the ground-to-air electromagnetic method has emerged as another new electromagnetic detection technique besides ground-based and airborne electromagnetic methods. It can overcome terrain limitations while maintaining detection depth and accuracy, enabling rapid, non-contact detection in complex areas. Its basic principle involves using a long-conductor ground source or a large-loop source to transmit a high-power primary pulse excitation field underground. This induces a secondary field in the underground geological body. Using a receiving system mounted on an unmanned aerial vehicle (UAV), the secondary field response is rapidly and continuously observed, and information about the underground geological body is effectively obtained through inversion interpretation. Based on domestic and international research and applications, the ground-to-air electromagnetic method, as an important tool in the fields of energy exploration and resource discovery, has attracted widespread attention from researchers.

[0004] While the ground-to-air electromagnetic (GTE) method has significant advantages in exploration, it also has certain limitations. In actual exploration, GTE instruments require high-power diesel generators and high-efficiency rectifier power supplies as excitation methods. However, this method has several drawbacks: Firstly, the large size and weight of the system significantly increase the difficulty of operation in complex terrains, such as those involving high-altitude cutting, thus affecting the flexibility and efficiency of exploration. Secondly, the method is costly to operate and has a significant environmental impact; the noise pollution and exhaust emissions from diesel engines not only disrupt the ecological environment of the exploration area but may also harm the health of workers. Furthermore, the energy utilization efficiency of this excitation method is not ideal, and it requires frequent maintenance, increasing operational complexity and cost, greatly limiting the promotion and application of the GTE method. Thirdly, the essential requirements of a GTE system necessitate the generation of high-amplitude, high-completeness electromagnetic excitation waveforms within an extremely short time (microseconds). However, traditional diesel generator sets, due to their large rotational inertia and long speed control system response links, often struggle to meet these dynamic performance requirements. Summary of the Invention

[0005] This application provides a lightweight, high-power power supply system for ground-to-air electromagnetic detection, which solves the problem that the power supply cannot generate high-amplitude, high-completeness electromagnetic excitation waveforms in a very short time during ground-to-air electromagnetic detection.

[0006] Another embodiment of this application provides a lightweight, high-power ground-to-air electromagnetic detection power supply method.

[0007] A lightweight, high-power ground-to-air electromagnetic detection power supply system according to an embodiment of this application includes:

[0008] The high-power vehicle power supply uses two parallel lithium battery units to provide the transmitter with short-term high-power transmission current;

[0009] The controller is used to acquire the detection task set by the transmitter, set the reference voltage according to the detection task, acquire the DC bus voltage, obtain the current modulation signal by comparing the DC bus voltage with the reference voltage, and acquire the output current of each lithium battery cell, and output a control signal to compensate the output current of each lithium battery cell according to the current modulation signal.

[0010] Furthermore, the detection task set by the transmitter is obtained, and the reference voltage is set according to the detection task, including: obtaining the detection mode in the detection task and the output power requirement corresponding to the detection mode; and setting multiple reference voltages for different detection modes according to the output power requirements of different detection modes.

[0011] Furthermore, the controller synchronizes with the transmitter via a synchronization module. When the transmitter performs a detection task, it selects the reference voltage corresponding to the current detection mode from multiple reference voltages according to the transmitter's current detection mode.

[0012] Furthermore, the reference voltage for the current detection mode is obtained by the controller from the required pulse excitation waveform obtained from the detection mode, obtaining the peak voltage of the pulse excitation waveform, and obtaining it by multiplying the peak voltage by a proportional coefficient, which is determined by the transmitter's circuitry and output power.

[0013] Further, the DC bus voltage is acquired, and a current modulation signal is obtained by comparing the DC bus voltage with a reference voltage, including:

[0014] The error signal is obtained by calculating the difference between the reference voltage and the DC bus voltage;

[0015] The current modulation signal is calculated based on the error signal as follows: ,in, This is the proportionality coefficient. The integral coefficient is... For at any time The error signal, From 0 to The cumulative sum of the error signals.

[0016] Furthermore, the output current of each lithium battery cell is acquired, and a control signal is output based on the current modulation signal to compensate the output current of each lithium battery cell, including:

[0017] The error signal of each lithium battery cell is obtained by calculating the difference between the output current of each lithium battery cell and the current modulation signal.

[0018] The control signal for each lithium battery cell is calculated based on the error signal of each cell. The calculation formula is as follows:

[0019] , ,in, and This is the proportionality coefficient. and The integral coefficient is... For a moment The first lithium battery cell error signal, From 0 to The cumulative sum of the error signals of the first lithium battery cell. For a moment The second lithium battery cell error signal, From 0 to The cumulative sum of the error signals from the second lithium battery cell. For a moment The first control signal for the lithium battery unit, For a moment The second control signal for the lithium battery unit;

[0020] The control signal of each lithium battery unit is output to the DC / DC converter of each lithium battery unit, and the compensated current is output.

[0021] A lightweight, high-power ground-to-air electromagnetic detection power supply method is provided in the second aspect of this application, comprising:

[0022] It employs two parallel lithium battery units to provide the transmitter with short-term high-power transmission current;

[0023] Obtain the detection task set by the transmitter, and set the reference voltage according to the detection task;

[0024] The DC bus voltage is obtained, and a current modulation signal is obtained by comparing the DC bus voltage with a reference voltage.

[0025] The output current of each lithium battery cell is obtained, and a control signal is output to compensate the output current of each lithium battery cell based on the current modulation signal.

[0026] Furthermore, the detection task set by the transmitter is obtained, and the reference voltage is set according to the detection task, including: obtaining the detection mode in the detection task and the power requirement corresponding to the detection mode; and setting multiple reference voltages for different detection modes according to the power requirements of different detection modes.

[0027] When the transmitter performs a detection mission, it selects the reference voltage corresponding to the current detection mode from multiple reference voltages according to the transmitter's current detection mode.

[0028] Furthermore, the reference voltage is obtained by acquiring the required pulse excitation waveform from the detection mission, obtaining the peak voltage of the pulse excitation waveform, and obtaining the reference voltage by multiplying the peak voltage by a proportionality coefficient, which is determined by the transmitter's circuitry and output power.

[0029] Further, the DC bus voltage is acquired, and a current modulation signal is obtained by comparing the DC bus voltage with a reference voltage, including:

[0030] The error signal is obtained by calculating the difference between the reference voltage and the DC bus voltage;

[0031] Calculate the current modulation signal based on the error signal: ,in, This is the proportionality coefficient. The integral coefficient is... For at any time The error signal, From 0 to The cumulative sum of the error signals.

[0032] Furthermore, the output current of each lithium battery cell is acquired, and a control signal is output based on the current modulation signal to compensate the output current of each lithium battery cell, including:

[0033] The error signal of each lithium battery cell is obtained by calculating the difference between the output current of each lithium battery cell and the current modulation signal.

[0034] The control signal for each lithium battery cell is calculated based on the error signal of each cell. The calculation formula is as follows:

[0035] , ,in, and This is the proportionality coefficient. and The integral coefficient is... For a moment The first lithium battery cell error signal, From 0 to The cumulative sum of the error signals of the first lithium battery cell. For a moment The second lithium battery cell error signal, From 0 to The cumulative sum of the error signals from the second lithium battery cell. For a moment The first control signal for the lithium battery unit, For a moment The second control signal for the lithium battery unit;

[0036] The control signal of each lithium battery unit is output to the DC / DC converter of each lithium battery unit, and the compensated current is output.

[0037] Compared with existing technologies, the advantages of this application are as follows: This application achieves stability of the power supply system during different instantaneous high-power outputs in a high-power air-to-ground electromagnetic detection system. It achieves stable power supply voltage output when adjusting the output voltage and the sudden increase or decrease of load current as needed. It can accommodate different output power detection requirements even when the transmitter's emission source has a fixed emission impedance. Attached Figure Description

[0038] Figure 1 A block diagram of a lightweight, high-power ground-to-air electromagnetic detection power supply system provided in the embodiments of this application;

[0039] Figure 2 A simplified diagram illustrating the working process of the lightweight, high-power ground-to-air electromagnetic detection power supply system provided in the embodiments of this application.

[0040] Figure 3 A flowchart of a lightweight, high-power ground-to-air electromagnetic detection power supply method provided in an embodiment of this application;

[0041] Figure 4 The output voltage and DC bus voltage variation curves of the two lithium battery units in the lightweight high-power ground-to-air electromagnetic detection power supply method provided in the embodiments of this application;

[0042] Figure 5 The curves showing the variation of the output current and current modulation signal of the two lithium battery units in the lightweight high-power ground-to-air electromagnetic detection power supply method provided in the embodiments of this application. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0044] The high-power air-to-ground electromagnetic detection system includes a transmitting device and a receiving device. The transmitting device requires a high-power power supply to provide power to the transmitter, which includes a transmitting circuit to generate a high-power pulse excitation current. The receiving device includes an unmanned aerial vehicle platform, a receiver, and coil sensors. In the prior art, high-power power supplies typically use diesel generators, which can guarantee the high-power output requirements. However, due to the shortcomings mentioned in the background art, this application uses lithium batteries from new energy vehicles to replace diesel generators to improve energy density. Due to the power requirements, in air-to-ground electromagnetic field applications, a single lithium battery unit is difficult to balance safety and cost control. Therefore, this application uses two parallel lithium battery units to achieve parallel output, effectively distributing risks and reducing costs. For example, two 150kW lithium battery units are used, with parallel output through dual 150kW DC / DC converters.

[0045] High power is provided by two 150kW lithium battery units, which improves the reliability, flexibility and scalability of the operation of a single lithium battery unit; and a voltage-controlled current sharing compensation control strategy is used to maintain the output voltage stability and current sharing of the parallel power supply units, so as to achieve highly reliable transmission.

[0046] The two lithium battery units can be high-energy, high-power ternary lithium battery packs with a cell density of 200Wh / kg, achieving a relatively light weight of 1550kg. At a 1C discharge rate, the output power can reach 300kW, and the weight is only 50% of that of a diesel generator with the same output power.

[0047] Using two parallel lithium battery units to meet high-power transmission requirements makes it difficult to ensure consistent output impedance across all outputs. Even with stable output voltage, uneven current distribution due to impedance differences can easily occur, causing significant surges, increasing heat load and losses, leading to system instability, and potentially damaging critical components, ultimately reducing overall system efficiency and energy efficiency. Simultaneously, the two lithium battery units need to maintain power supply stability during varying instantaneous high-power transmitter outputs. A stable power supply output can be achieved by adjusting the output voltage and handling sudden increases or decreases in load current as needed.

[0048] Based on the above issues, see Figure 1 The block diagram of the lightweight, high-power ground-to-air electromagnetic detection power supply system shown, along with its combination with... Figure 2The diagram shows a simplified operation of the lightweight, high-power air-to-ground electromagnetic detection power supply system. This application provides a lightweight, high-power air-to-ground electromagnetic detection power supply system, including a high-power vehicle-mounted power supply with two parallel lithium battery units to provide short-term high-power transmission current to the transmitter; a controller for acquiring the detection task set by the transmitter and setting a reference voltage based on the detection task; acquiring the DC bus voltage and obtaining a current modulation signal by comparing the DC bus voltage with the reference voltage; and also acquiring the output current of each lithium battery unit and outputting a control signal to compensate the output current of each lithium battery unit based on the current modulation signal.

[0049] The lightweight, high-power air-to-ground electromagnetic detection system is mounted on a small truck. Two parallel lithium-ion battery units adjust their output power via a DC / DC converter, and the power is ultimately excited by a transmitter. The entire system weighs and is only 50% the weight and volume of a diesel generator with the same output power. The DC / DC converter, when paired with multiple transmitters, enables multi-load transmission, constructing complex field sources and achieving deeper excitation.

[0050] The controller can communicate with the transmitter via wired or wireless means and can obtain the transmitter's detection tasks in real time. When the transmitter performs a detection task, it selects different detection modes for different application scenarios. Different detection modes correspond to different target types, distances, and resolution requirements. At this time, different detection modes require different output powers. According to the output power requirements of different detection modes, multiple reference voltages corresponding to the detection modes can be set, and the transmitter's power supply voltage can be dynamically adjusted to control the output power.

[0051] In one embodiment, the controller obtains the required pulse excitation waveform from the detection mode, obtains the peak voltage of the pulse excitation waveform, and obtains the reference voltage by multiplying the peak voltage by a proportionality coefficient, which is determined by the transmitter's circuitry and output power.

[0052] In one embodiment, the controller pre-stores multiple reference voltages corresponding to different detection modes. It synchronizes with the transmitter via a synchronization module. When the transmitter performs a detection task, it selects the reference voltage corresponding to the current detection mode from among the multiple reference voltages. By synchronizing the detection task, the reference voltage can be adjusted dynamically in real time to adapt to the reference voltage of the current detection mode.

[0053] In one embodiment, the DC bus voltage is acquired, and a current modulation signal is obtained by comparing the DC bus voltage with a reference voltage, including:

[0054] The error signal is obtained by calculating the difference between the reference voltage and the DC bus voltage;

[0055] Calculate the current modulation signal based on the error signal: ,in, This is the proportionality coefficient. The integral coefficient is... For at any time The error signal, From 0 to The cumulative sum of the error signals.

[0056] The DC bus refers to the output line formed by two lithium-ion battery cells connected in parallel. The DC bus voltage is the output voltage after the two lithium-ion battery cells are connected in parallel. The DC bus voltage can be obtained through a voltage sensor. The controller can compare the DC bus voltage with a reference voltage through hardware such as a comparator, or it can compare the two voltage values ​​through software. The software calculates the difference between the reference voltage and the DC bus voltage to obtain an error signal. Since the DC bus voltage is monitored in real time, the error signal may be a dynamic variable. By calculating the error signal, a current modulation signal is obtained from the voltage signal.

[0057] In one embodiment, the output current of each lithium battery cell is acquired, and a control signal is output based on the current modulation signal to compensate the output current of each lithium battery cell, including:

[0058] The error signal of each lithium battery cell is obtained by calculating the difference between the output current of each lithium battery cell and the current modulation signal.

[0059] The control signal for each lithium battery cell is calculated based on the error signal of each cell. The calculation formula is as follows:

[0060] , ,in, and This is the proportionality coefficient. and The integral coefficient is... For a moment The first lithium battery cell error signal, From 0 to The cumulative sum of the error signals of the first lithium battery cell. For a moment The second lithium battery cell error signal, From 0 to The cumulative sum of the error signals from the second lithium battery cell. For a moment The first control signal for the lithium battery unit, For a moment The second control signal for the lithium battery unit;

[0061] The control signal of each lithium battery unit is output to the DC / DC converter of each lithium battery unit, and the compensated current is output.

[0062] Through the above compensation, the DC bus voltage is maintained near the reference voltage; and the output currents of the two DC / DC converters achieve current sharing. The results show that the voltage-controlled current sharing compensation strategy adopted in this application can ensure stable output voltage of the power supply unit and achieve current sharing control of the parallel output current.

[0063] This application enables parallel output of a wide-range adjustable voltage from 1600V to 2400V by adjusting the reference voltage. This ensures that the voltage can be matched as needed to meet the detection requirements of different output power, and guarantees current distribution and voltage stability even in extreme instantaneous high-power output scenarios, significantly improving the system's dynamic response rate and stability. Two boost DC / DC converters are connected in parallel, with the input voltage set to 1200V and the reference voltage set to 2000V. The two DC / DC converters are connected to different loads to simulate the line impedance in real-world applications. The DC bus voltage and the reference voltage are compared, and the deviation is calculated, outputting a current modulation signal. Based on this current modulation signal, the output current of the two DC / DC converters is adjusted, and drive signals are output to the two DC / DC converters. The DC bus voltage is maintained at approximately 2000V, equal to the reference voltage.

[0064] On the other hand, see Figure 3 As shown, this application provides a lightweight, high-power ground-to-air electromagnetic detection power supply method, implemented using the aforementioned lightweight, high-power ground-to-air electromagnetic detection power supply system, including:

[0065] S1 uses two parallel lithium battery units to provide the transmitter with short-time high-power transmission current;

[0066] S2 acquires the detection task set by the transmitter and sets the reference voltage according to the detection task;

[0067] S3 acquires the DC bus voltage and obtains a current modulation signal by comparing the DC bus voltage with a reference voltage.

[0068] S4 acquires the output current of each lithium battery cell and outputs a control signal to compensate the output current of each lithium battery cell based on the current modulation signal.

[0069] In one embodiment, obtaining the detection task set by the transmitter and setting a reference voltage according to the detection task includes: obtaining the detection mode in the detection task and the power requirement corresponding to the detection mode; and setting multiple reference voltages corresponding to different detection modes according to the power requirements of different detection modes.

[0070] When the transmitter performs a detection mission, it selects the reference voltage corresponding to the current detection mode from multiple reference voltages according to the transmitter's current detection mode.

[0071] In one embodiment, the reference voltage is obtained by acquiring the required pulse excitation waveform from the detection mission, obtaining the peak voltage of the pulse excitation waveform, and obtaining the reference voltage by multiplying the peak voltage by a scaling factor, wherein the scaling factor is determined by the transmitter's circuitry and output power.

[0072] In one embodiment, the DC bus voltage is acquired, and a current modulation signal is obtained by comparing the DC bus voltage with a reference voltage, including:

[0073] The error signal is obtained by calculating the difference between the reference voltage and the DC bus voltage;

[0074] Calculate the current modulation signal based on the error signal: ,in, This is the proportionality coefficient. The integral coefficient is... For at any time The error signal, From 0 to The cumulative sum of the error signals.

[0075] In one embodiment, the output current of each lithium battery cell is acquired, and a control signal is output based on the current modulation signal to compensate the output current of each lithium battery cell, including:

[0076] The error signal of each lithium battery cell is obtained by calculating the difference between the output current of each lithium battery cell and the current modulation signal.

[0077] The control signal for each lithium battery cell is calculated based on the error signal of each cell. The calculation formula is as follows:

[0078] , ,in, and This is the proportionality coefficient. and The integral coefficient is... For a moment The first lithium battery cell error signal, From 0 to The cumulative sum of the error signals of the first lithium battery cell. For a moment The second lithium battery cell error signal, From 0 to The cumulative sum of the error signals from the second lithium battery cell. For a moment The first control signal for the lithium battery unit, For a moment The second control signal for the lithium battery unit;

[0079] The control signal of each lithium battery unit is output to the DC / DC converter of each lithium battery unit, and the compensated current is output.

[0080] The control signal is the duty cycle of the drive signal required for the two DC / DC converters to achieve the target output. The formula for calculating the DC / DC converter output signal is as follows:

[0081] ,

[0082] Where, It is the output voltage of the DC / DC converter. It is the input voltage of the DC / DC converter. It is the duty cycle of the drive signal, i.e., the control signal.

[0083] The current of both DC / DC converters is adjusted by the generated current modulation signal to keep the current basically consistent, realizing autonomous power sharing and global optimization among multiple output channels, and ensuring that the transmitter has dynamic response capability and operational stability under high-power pulse excitation.

[0084] In one application, this application sets the reference voltage to 2000V, and connects two lithium-ion battery cells to different loads to simulate the line impedance in a real-world application scenario. The DC bus voltage is compared with the reference voltage, the deviation is calculated, and a current modulation signal is output. The results are as follows: Figure 4 and Figure 5 As shown, Figure 4 The display shows the output voltage of the two lithium battery units and the DC bus voltage after parallel connection. It can be seen that the DC bus voltage is maintained at around 2000V, which is equal to the reference voltage. Figure 5 The output currents and current modulation signals of the two lithium battery units have overlapped, indicating that the output currents of the two lithium battery units have reached the point of equalization.

[0085] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A lightweight, high-power ground-to-air electromagnetic detection power supply system, characterized in that, include: The high-power vehicle power supply uses two parallel lithium battery units to provide the transmitter with short-term high-power transmission current; The controller is used to acquire the detection task set by the transmitter, set the reference voltage according to the detection task, acquire the DC bus voltage, obtain the current modulation signal by comparing the DC bus voltage with the reference voltage, and acquire the output current of each lithium battery cell, and output a control signal to compensate the output current of each lithium battery cell according to the current modulation signal. The transmitter's detection task settings are obtained, and the reference voltage is set according to the detection task. This includes: obtaining the detection mode in the detection task and the corresponding output power requirement of the detection mode; and setting multiple reference voltages for different detection modes according to their output power requirements. The controller synchronizes with the transmitter through a synchronization module. When the transmitter performs a detection task, it selects the reference voltage corresponding to the current detection mode from multiple reference voltages according to the current detection mode of the transmitter. The reference voltage for the current detection mode is obtained by the controller from the pulse excitation waveform required in the detection mode, the peak voltage of the pulse excitation waveform, and the product of the peak voltage and the proportional coefficient, which is determined by the transmitter circuit and output power.

2. The lightweight, high-power ground-to-air electromagnetic detection power supply system according to claim 1, characterized in that, Obtain the DC bus voltage and, by comparing the DC bus voltage with a reference voltage, obtain a current modulation signal, including: The error signal is obtained by calculating the difference between the reference voltage and the DC bus voltage; The current modulation signal is calculated based on the error signal as follows: ,in, This is the proportionality coefficient. The integral coefficient is... For at any time The error signal, From 0 to The cumulative sum of the error signals.

3. The lightweight, high-power ground-to-air electromagnetic detection power supply system according to claim 1, characterized in that, The output current of each lithium battery cell is acquired, and a control signal is output based on the current modulation signal to compensate the output current of each lithium battery cell, including: The error signal of each lithium battery cell is obtained by calculating the difference between the output current of each lithium battery cell and the current modulation signal. The control signal for each lithium battery cell is calculated based on the error signal of each cell. The calculation formula is as follows: , ,in, and This is the proportionality coefficient. and The integral coefficient is... For a moment The first lithium battery cell error signal, From 0 to The cumulative sum of the error signals of the first lithium battery cell. For a moment The second lithium battery cell error signal, From 0 to The cumulative sum of the error signals from the second lithium battery cell. For a moment The first control signal for the lithium battery unit, For a moment The second control signal for the lithium battery unit; The control signal of each lithium battery unit is output to the DC / DC converter of each lithium battery unit, and the compensated current is output.

4. A lightweight, high-power ground-to-air electromagnetic detection power supply method, characterized in that, include: It employs two parallel lithium battery units to provide the transmitter with short-term high-power transmission current; Obtain the detection task set by the transmitter, and set the reference voltage according to the detection task; The DC bus voltage is obtained, and a current modulation signal is obtained by comparing the DC bus voltage with a reference voltage. The output current of each lithium battery cell is obtained, and a control signal is output to compensate the output current of each lithium battery cell based on the current modulation signal. The transmitter's detection task settings are obtained, and the reference voltage is set according to the detection task. This includes: obtaining the detection mode in the detection task and the power requirement corresponding to the detection mode; and setting multiple reference voltages for different detection modes according to their power requirements. When the transmitter performs a detection mission, it selects the reference voltage corresponding to the current detection mode from multiple reference voltages according to the transmitter's current detection mode; The reference voltage is obtained by acquiring the required pulse excitation waveform from the detection mission, obtaining the peak voltage of the pulse excitation waveform, and multiplying the peak voltage by a proportionality coefficient, which is determined by the transmitter's circuitry and output power.

5. The lightweight, high-power ground-to-air electromagnetic detection power supply method according to claim 4, characterized in that, Obtain the DC bus voltage and, by comparing the DC bus voltage with a reference voltage, obtain a current modulation signal, including: The error signal is obtained by calculating the difference between the reference voltage and the DC bus voltage; Calculate the current modulation signal based on the error signal: ,in, This is the proportionality coefficient. The integral coefficient is... For at any time The error signal, From 0 to The cumulative sum of the error signals.

6. The lightweight, high-power ground-to-air electromagnetic detection power supply method according to claim 4, characterized in that, The output current of each lithium battery cell is acquired, and a control signal is output based on the current modulation signal to compensate the output current of each lithium battery cell, including: The error signal of each lithium battery cell is obtained by calculating the difference between the output current of each lithium battery cell and the current modulation signal. The control signal for each lithium battery cell is calculated based on the error signal of each cell. The calculation formula is as follows: , ,in, and This is the proportionality coefficient. and The integral coefficient is... For a moment The first lithium battery cell error signal, From 0 to The cumulative sum of the error signals of the first lithium battery cell. For a moment The second lithium battery cell error signal, From 0 to The cumulative sum of the error signals from the second lithium battery cell. For a moment The first control signal for the lithium battery unit, For a moment The second control signal for the lithium battery unit; The control signal of each lithium battery unit is output to the DC / DC converter of each lithium battery unit, and the compensated current is output.

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