High-voltage power supply stability adjusting system, method, equipment and medium

Abstract

The invention discloses a high-voltage power supply stability adjusting system, method and device and a medium. The system comprises a high-voltage power supply module, a current sampling unit, an arithmetic unit and a current sampling feedback unit. The input end of the high-voltage power supply module is connected with power supply input; the high-voltage output end of the high-voltage unit module is connected with the traveling wave tube; the high-voltage power supply module is further connected with a current sampling unit, the current sampling unit is connected with the arithmetic unit, the output of the arithmetic unit is connected with the variable input end of the PWM circuit, and the current sampling feedback unit is connected with the high-voltage output of the high-voltage power supply module and feeds back and outputs the high-voltage output to the PWM circuit based on a feedback coefficient. And the output feedback of the PWM circuit is connected with the high-voltage power supply module. The problems that a traditional high-voltage power supply can only respond to voltage changes and the duty ratio is slow to adjust are solved, stable voltage output is achieved, and too large drop cannot be generated.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage power supply stability regulation, and in particular to a high-voltage power supply stability regulation system, method, device and medium. Background Art

[0002] Traveling wave tube amplifiers are core equipment in the fields of communication, interference, detection, etc. With the rapid development of high-power pulse application technology in commercial aerospace and other platforms, higher requirements are put forward for the pulse drop and dynamic stability of the high-voltage power supply of traveling wave tubes. Figure 1 As shown, the traveling wave tube amplifier is mainly composed of two parts: a high-voltage power supply (EPC for short) and a traveling wave tube (TWT for short). The output voltage of the high-voltage power supply includes multiple high-voltage electrodes such as the cathode Uk, the collector Uc1, the collector Uc2, and the focusing control electrode UG. The power supply receives the output voltage feedback and uses pulse width modulation (PWM) to modulate the input low-voltage DC into a high-voltage DC of several thousand volts for output.

[0003] The traditional traveling wave tube high voltage power supply adopts a pure voltage regulation method. When the output power changes, the power supply PWM circuit cannot respond immediately. Only when the output power change causes the output voltage to change significantly, the power supply PWM circuit can respond. However, at this time, the output voltage has already produced a significant drop or overshoot. In the traveling wave tube pulse working state, the high voltage power supply faces a high-frequency jumping load, and the pulse width is difficult to expand or narrow quickly, which often causes the output voltage to drop too much or overshoot too high. Severe drops or overshoots may cause abnormal RF indicators of the traveling wave tube amplifier. In summary, the existing traveling wave tube high voltage power supply control and regulation method has a slow response and insufficient stability, and it is difficult to meet the requirements of high-power pulse working traveling wave tube amplifiers for the stability of the high voltage power supply output voltage. Summary of the invention

[0004] To solve the above problems, the present invention provides a high-voltage power supply stability regulation system, method, device and medium. On the basis of traditional voltage feedback, weighted feedback of the collector current of the traveling wave tube is added. The actual power size of the traveling wave tube is characterized by current weighted feedback. The weighted current value is used as the input variable of the high-voltage power supply PWM regulation, so that the PWM pulse width can change in real time according to the actual power of the TWT, thereby achieving a small fluctuation in the output voltage of the high-voltage power supply when the traveling wave tube power jumps, and maintaining relatively high stability.

[0005] The present invention provides a high voltage power supply stability regulation system, and the specific technical scheme is as follows:

[0006] The system includes a high-voltage power supply module, a current sampling unit and an operation unit;

[0007] The input end of the high-voltage power supply module is connected to the power supply input, and the high-voltage output end of the high-voltage unit module is connected to the traveling wave tube;

[0008] The high-voltage power supply module is also connected to the current sampling unit, the current sampling unit is connected to the operation unit, the output of the operation unit is connected to the variable input end of the PWM circuit, and the output feedback of the PWM circuit is connected to the high-voltage power supply module.

[0009] Furthermore, the high-voltage power supply module includes a DC-AC conversion module, a boost module and a high-voltage rectifier module; the input end of the DC-AC conversion module is connected to the power supply input, the output end of the DC-AC conversion module is connected to the boost module, the boost module is connected to the high-voltage rectifier module, the high-voltage rectifier module outputs high voltage to the traveling wave tube, the current sampling unit is connected to the high-voltage output of the high-voltage rectifier module, and the output feedback of the PWM circuit is connected to the DC-AC conversion module.

[0010] Furthermore, the current sampling unit includes multiple current sampling modules, and different current sampling modules are provided with different sampling coefficients.

[0011] Furthermore, the operation unit is a weighted operation circuit, which performs weighted operation based on the current sampling values ​​of each current sampling module and the corresponding sampling coefficients.

[0012] Furthermore, the system also includes the current sampling feedback unit, which is connected to the high-voltage output of the high-voltage power supply module and feeds back the high-voltage output to the PWM circuit based on a feedback coefficient.

[0013] The present invention also provides a high voltage power supply stability adjustment method, based on the above-mentioned high voltage power supply stability adjustment system, the specific steps are as follows:

[0014] S1: The current sampling unit performs multi-level current sampling on the high voltage output of the high voltage power module;

[0015] S2: Input the multi-level sampled current into the operation circuit for operation to obtain the input variable of the PWM circuit;

[0016] S3: The voltage sampling feedback unit synchronously receives the high voltage input of the high voltage power module during sampling and performs feedback output;

[0017] S4: Based on the operation output and feedback output of the operation circuit, the duty cycle of the PWM circuit is adjusted, and the real-time feedback output of the PWM circuit is input to the high-voltage power supply module.

[0018] Furthermore, in step S2, the operation of the operation circuit is specifically as follows:

[0019] Ik =k1*I c1 +k2*I c2 +…+k n *I cn

[0020] Among them, I k Represents the weighted summation output of the operation circuit, I cn Indicates the current sampling value corresponding to each level of current sampling module, k n Indicates the weighting coefficients corresponding to the current sampling values ​​of each level of current sampling modules.

[0021] Furthermore, in step S3, the feedback output of the voltage sampling feedback unit is as follows:

[0022] V k =k0*U k

[0023] Among them, V k represents the feedback output of the voltage sampling feedback unit, k0 represents the feedback coefficient, U k Indicates the high voltage output of the high voltage power module.

[0024] The present invention also provides a high-voltage power supply stability adjustment device, which includes: a memory, a processor, and a high-voltage power supply stability adjustment program stored in the memory and executable on the processor, wherein the high-voltage power supply stability adjustment program implements the steps of the above-mentioned high-voltage power supply stability adjustment method when executed by the processor.

[0025] The present invention also provides a computer storage medium, on which a high-voltage power supply stability adjustment program is stored. When the high-voltage power supply stability adjustment program is executed by a processor, the steps of the high-voltage power supply stability adjustment method described above are implemented.

[0026] The beneficial effects of the present invention are as follows:

[0027] The present invention collects the currents of multiple collectors of a traveling wave tube, characterizes the traveling wave tube power (i.e., the load power of a high-voltage power supply) by weighted summation of the multi-stage currents, and uses the load power as the input of a PWM modulation circuit, so that the output duty cycle is proportional to the output power of the power supply. This achieves that the PWM duty cycle of the high-voltage power supply responds to voltage changes while also responding quickly to output power changes, so that the output voltage remains stable without excessive drops, and solves the problem that a traditional high-voltage power supply can only respond to voltage changes but has slow duty cycle adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall system architecture of the present invention. DETAILED DESCRIPTION

[0029] The following description clearly and completely describes the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0030] In the description of the embodiments of the present invention, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the invention product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, or the orientation or positional relationship in which the invention product is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Example 1

[0033] Embodiment 1 of the present invention discloses a high voltage power supply stability regulation system, such as Figure 1 As shown, the system includes a high-voltage power supply module, a current sampling unit, an operation unit and a current sampling feedback unit;

[0034] The input end of the high-voltage power supply module is connected to the power supply input, and the high-voltage output end of the high-voltage unit module is connected to the traveling wave tube;

[0035] The high-voltage power supply module is also connected to the current sampling unit, which is connected to the operation unit. The output of the operation unit is connected to the variable input terminal of the PWM circuit. The current sampling feedback unit is connected to the high-voltage output of the high-voltage power supply module. The high-voltage output is fed back to the PWM circuit based on the feedback coefficient. The output feedback of the PWM circuit is connected to the high-voltage power supply module.

[0036] Specifically, the high-voltage power supply module includes a DC-AC conversion module, a boost module and a high-voltage rectifier module; the input end of the DC-AC conversion module is connected to the power supply input, the output end of the DC-AC conversion module is connected to the boost module, the boost module is connected to the high-voltage rectifier module, the high-voltage rectifier module outputs high voltage to the traveling wave tube, the current sampling unit is connected to the high-voltage output of the high-voltage rectifier module, and the output feedback of the PWM circuit is connected to the DC-AC conversion module.

[0037] As a preferred embodiment, the current sampling unit includes multiple current sampling modules, and different current sampling modules are provided with different sampling coefficients.

[0038] As a preferred embodiment, the operation unit is a weighted operation circuit, which performs weighted operation based on the current sampling values ​​of each current sampling module and the corresponding sampling coefficients.

[0039] Example 2

[0040] Embodiment 2 of the present invention discloses a method for adjusting the stability of a high voltage power supply based on the above-mentioned embodiment 1, and the specific process is as follows:

[0041] S1: The current sampling unit performs multi-level current sampling on the high voltage output of the high voltage power module;

[0042] S2: Input the multi-level sampled current into the operation circuit for operation to obtain the input variable of the PWM circuit;

[0043] The details are as follows:

[0044] The operation of the operation circuit is specifically as follows:

[0045] I k =k1*I c1 +k2*I c2 +…+k n *I cn

[0046] Among them, I k Represents the weighted summation output of the operation circuit, I cn Indicates the current sampling value corresponding to each level of current sampling module, k n Indicates the weighting coefficients corresponding to the current sampling values ​​of each level of current sampling modules.

[0047] S3: The voltage sampling feedback unit synchronously receives the high voltage input of the high voltage power module during sampling and performs feedback output;

[0048] The details are as follows:

[0049] V k =k0*U k

[0050] Among them, V k represents the feedback output of the voltage sampling feedback unit, k0 represents the feedback coefficient, U k Indicates the high voltage output of the high voltage power module.

[0051] S4: Based on the operation output and feedback output of the operation circuit, the duty cycle of the PWM circuit is adjusted, and the real-time feedback output of the PWM circuit is input to the high-voltage power supply module.

[0052] Based on the above method, any increase or decrease in the output current will cause the output power to increase or decrease. The power change information I k It will immediately trigger the PWM circuit duty cycle D to increase or decrease rapidly, thereby keeping the output voltage stable without excessive drop or overshoot.

[0053] Example 3

[0054] Embodiment 3 of the present invention discloses a high-voltage power supply stability adjustment device, which may be a user equipment (UE) such as a mobile phone, a smart phone, a laptop computer, a digital broadcast receiver, a personal digital assistant (PDA), a tablet computer (PAD), a handheld device, a vehicle-mounted device, a wearable device, a computing device or other processing device connected to a wireless modem, a mobile station (MS), etc. for performing a high-voltage power supply stability adjustment method. The device may be called a user terminal, a portable terminal, a desktop terminal, etc.

[0055] Typically, the device includes: at least one processor, a memory, and a high-voltage power supply stability adjustment program stored in the memory and executable on the processor, wherein the high-voltage power supply stability adjustment program is configured to implement the steps of the high-voltage power supply stability adjustment method as described in Example 2.

[0056] The processor may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor may be implemented in at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), and PLA (Programmable Logic Array). The processor may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a CPU (Central Processing Unit); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the display screen. The processor may also include an AI (Artificial Intelligence) processor, which is used to process calculation operations related to the high-voltage power supply stability adjustment program, so that the high-voltage power supply stability adjustment method can be trained and learned autonomously to improve efficiency and accuracy.

[0057] The memory may include one or more computer-readable storage media, which may be non-transitory. The memory may also include a high-speed random access memory and a non-volatile memory, such as one or more disk storage devices, flash memory storage devices. In some embodiments, the non-transitory computer-readable storage medium in the memory is used to store at least one instruction, which is used to be executed by the processor to implement the high-voltage power supply stability adjustment method described in Example 2.

[0058] In some embodiments, the terminal may also optionally include: a communication interface and at least one peripheral device. The processor, the memory and the communication interface may be connected via a bus or a signal line. Each peripheral device may be connected to the communication interface via a bus, a signal line or a circuit board. Specifically, the peripheral device includes: at least one of a radio frequency circuit, a display screen and a power supply.

[0059] The communication interface can be used to connect at least one peripheral device related to I / O (Input / Output) to the processor and the memory. The communication interface is used to receive the movement trajectories and other data of multiple mobile terminals uploaded by users through the peripheral device. In some embodiments, the processor, memory and communication interface are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor, memory and communication interface can be implemented on a separate chip or circuit board, which is not limited in this embodiment.

[0060] The radio frequency circuit is used to receive and transmit RF (Radio Frequency) signals, also known as electromagnetic signals. The radio frequency circuit communicates with the communication network and other communication devices through electromagnetic signals, so that the movement trajectory and other data of multiple mobile terminals can be obtained. The radio frequency circuit converts the electrical signal into an electromagnetic signal for transmission, or converts the received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit includes: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a user identity module card, etc. The radio frequency circuit can communicate with other terminals through at least one wireless communication protocol. The wireless communication protocol includes but is not limited to: a metropolitan area network, various generations of mobile communication networks (2G, 3G, 4G and 5G), a wireless local area network and / or a WiFi (Wireless Fidelity) network. In some embodiments, the radio frequency circuit may also include circuits related to NFC (Near Field Communication), which is not limited in this application.

[0061] The display screen is used to display the UI (User Interface). The UI may include graphics, text, icons, videos and any combination thereof. When the display screen is a touch display screen, the display screen also has the ability to collect touch signals on the surface or above the surface of the display screen. The touch signal can be input to the processor as a control signal for processing. At this time, the display screen can also be used to provide virtual buttons and / or virtual keyboards, also known as soft buttons and / or soft keyboards. In some embodiments, the display screen can be one, the front panel of the electronic device; in other embodiments, the display screen can be at least two, respectively arranged on different surfaces of the electronic device or in a folding design; in some further embodiments, the display screen can be a flexible display screen, arranged on a curved surface or a folding surface of the electronic device. Even, the display screen can also be set to a non-rectangular irregular shape, that is, a special-shaped screen. The display screen can be made of materials such as LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode) and the like.

[0062] The power supply is used to power various components in the electronic device. The power supply can be AC, DC, a disposable battery or a rechargeable battery. When the power supply includes a rechargeable battery, the rechargeable battery can support wired charging or wireless charging. The rechargeable battery can also be used to support fast charging technology.

[0063] Example 4

[0064] Embodiment 4 of the present invention discloses a computer storage medium, which is a readable storage medium. A computer program is stored on the readable storage medium. When the computer program is executed by a processor, the steps of the high-voltage power supply stability adjustment method of the above-mentioned embodiment 2 are implemented.

[0065] The readable storage medium may specifically be a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, or other readable storage medium that can store program codes.

[0066] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A high voltage power supply stability regulation system, characterized in that: The system includes a high-voltage power supply module, a current sampling unit and an operation unit; The input end of the high-voltage power supply module is connected to the power supply input, and the high-voltage output end of the high-voltage unit module is connected to the traveling wave tube; The high-voltage power supply module is also connected to the current sampling unit, the current sampling unit is connected to the operation unit, the output of the operation unit is connected to the variable input end of the PWM circuit, and the output feedback of the PWM circuit is connected to the high-voltage power supply module.

2. The high voltage power supply stability regulation system according to claim 1, characterized in that: The high-voltage power supply module includes a DC-AC conversion module, a boost module and a high-voltage rectifier module; the input end of the DC-AC conversion module is connected to the power supply input, the output end of the DC-AC conversion module is connected to the boost module, the boost module is connected to the high-voltage rectifier module, the high-voltage rectifier module outputs high voltage to the traveling wave tube, the current sampling unit is connected to the high-voltage output of the high-voltage rectifier module, and the output feedback of the PWM circuit is connected to the DC-AC conversion module.

3. The high voltage power supply stability regulation system according to claim 1, characterized in that: The current sampling unit includes multiple current sampling modules, and different current sampling modules are provided with different sampling coefficients.

4. The high voltage power supply stability regulation system according to claim 1, characterized in that: The operation unit is a weighted operation circuit, which performs weighted operation based on the current sampling values ​​of each current sampling module and the corresponding sampling coefficients.

5. The high voltage power supply stability regulation system according to claim 1, characterized in that: The system also includes a current sampling feedback unit, which is connected to the high-voltage output of the high-voltage power supply module and feeds back the high-voltage output to the PWM circuit based on a feedback coefficient.

6. A method for regulating the stability of a high voltage power supply, characterized in that: A high voltage power supply stability regulation system according to any one of claims 1 to 5, comprising: S1: The current sampling unit performs multi-level current sampling on the high voltage output of the high voltage power module; S2: Input the multi-level sampled current into the operation circuit for operation to obtain the input variable of the PWM circuit; S3: The voltage sampling feedback unit synchronously receives the high voltage input of the high voltage power module during sampling and performs feedback output; S4: Based on the operation output and feedback output of the operation circuit, the duty cycle of the PWM circuit is adjusted, and the real-time feedback output of the PWM circuit is input to the high-voltage power supply module.

7. The high voltage power supply stability adjustment method according to claim 6, characterized in that: In step S2, the operation of the operation circuit is specifically as follows: I k =k1*I c1 +k2*I c2 +…+k n *I cn Among them, I k Represents the weighted summation output of the operation circuit, I cn Indicates the current sampling value corresponding to each level of current sampling module, k n Indicates the weighting coefficients corresponding to the current sampling values ​​of each level of current sampling modules.

8. The high voltage power supply stability adjustment method according to claim 6, characterized in that: In step S3, the feedback output of the voltage sampling feedback unit is as follows: V k =k0*U k Among them, V k represents the feedback output of the voltage sampling feedback unit, k0 represents the feedback coefficient, U k Indicates the high voltage output of the high voltage power module.

9. A high voltage power supply stability regulating device, characterized in that: The high-voltage power supply stability adjustment device includes: a memory, a processor, and a high-voltage power supply stability adjustment program stored in the memory and executable on the processor. When the high-voltage power supply stability adjustment program is executed by the processor, the steps of the high-voltage power supply stability adjustment method described in any one of claims 6 to 8 are implemented.

10. A computer storage medium, characterized in that: The storage medium stores a high-voltage power supply stability adjustment program, and when the high-voltage power supply stability adjustment program is executed by the processor, the steps of the high-voltage power supply stability adjustment method described in any one of claims 6 to 8 are implemented.

Images