Flow-sharing control system and flow-sharing control method of bypass module and related equipment

Abstract

The embodiment of the invention discloses a bypass module current sharing control system, a bypass module current sharing control method and related equipment, which are used in the technical field of bypass power supply. In the current sharing control system of the bypass module, a main card current sharing control module is used for obtaining a first conduction angle of a switching tube in the bypass module based on a target current sharing current and a first output current of the bypass module obtained by sampling, and outputting a driving signal corresponding to the first conduction angle to a signal gating module; the standby card current-sharing control module is used for obtaining a second conduction angle of a switching tube in the bypass module based on the target current-sharing current and a sampled second output current of the bypass module, and outputting a driving signal corresponding to the second conduction angle to the signal gating module; the signal gating module is used for gating a normal target driving signal from the driving signal corresponding to the first conduction angle and the driving signal corresponding to the second conduction angle to drive a switching tube of the bypass module; the bypass current sharing failure of the bypass module can be effectively prevented.

Description

Technical Field

[0001] This application relates to the field of bypass power supply technology, and in particular to a current sharing control system, current sharing control method and related equipment for a bypass module. Background Technology

[0002] The existing UPS (Uninterruptible Power Supply) system is a power protection system that includes energy storage devices, uses inverter modules as the main unit, and provides stable voltage and frequency output. In a UPS system, the load is powered by either a DC source via an inverter module or a bypass AC source via a bypass module.

[0003] In existing bypass power supplies, multiple bypass modules are connected in parallel to carry the load. In this case, it is necessary to share the output current of these multiple bypass modules. This is often achieved by controlling the conduction angle of the switching transistors in the bypass modules through software, making the bypass impedances of the multiple parallel bypass modules equal, thus realizing bypass current sharing. However, when the bypass current sharing of one bypass module fails, it can easily affect the bypass current sharing of other bypass modules. Therefore, there is an urgent need for a bypass module current sharing control scheme to prevent bypass current sharing failure. Summary of the Invention

[0004] This application provides a current sharing control system, current sharing control method and related equipment for a bypass module, which effectively prevents bypass current sharing failure of the bypass module.

[0005] This application provides a current sharing control system for a bypass module, wherein multiple bypass modules are connected in parallel to carry the load, including: a primary card current sharing control module, a backup card current sharing control module, and a signal gating module;

[0006] The main card current sharing control module is connected to the signal gating module and is used to obtain the first conduction angle of the switching transistor in the bypass module based on the target current sharing current and the first output current of the bypass module obtained by sampling, and output the driving signal corresponding to the first conduction angle to the signal gating module.

[0007] The backup card current sharing control module is connected to the signal gating module and is used to obtain the second conduction angle of the switching transistor in the bypass module based on the target current sharing current and the sampled second output current of the bypass module, and output the driving signal corresponding to the second conduction angle to the signal gating module.

[0008] The signal selection module is connected to the switching transistor of the bypass module and is used to select a normal target driving signal from the driving signal corresponding to the first conduction angle and the driving signal corresponding to the second conduction angle to drive the switching transistor of the bypass module.

[0009] Furthermore, the main card current sharing control module includes: a first current sampler and a current sharing controller;

[0010] The first current sampler is used to sample the first output current of the bypass module;

[0011] The input terminal of the current sharing controller receives the current difference between the target current sharing current and the first output current, and the output terminal of the current sharing controller outputs the first conduction angle of the switching transistor in the bypass module based on the current difference.

[0012] Furthermore, the backup card current sharing control module includes: a second current sampler and a current sharing controller;

[0013] The second current sampler is used to sample the second output current of the bypass module;

[0014] The input terminal of the current sharing controller receives the current difference between the target current sharing current and the second output current, and the output terminal of the current sharing controller outputs the second conduction angle of the switching transistor in the bypass module based on the current difference.

[0015] Furthermore, the backup card current sharing control module also includes: a backup card limiter controller;

[0016] The backup card limiting controller is connected to the current sharing controller of the backup card current sharing control module, and is used to obtain the first conduction angle obtained by the main card current sharing control module, and limit the second conduction angle output by the current sharing controller of the backup card current sharing control module to be less than or equal to the first conduction angle.

[0017] Furthermore, the signal gating module includes: a first diode and a second diode;

[0018] The output terminal of the primary card current sharing control module is connected to the anode of the first diode, the output terminal of the backup card current sharing control module is connected to the anode of the second diode, and the cathodes of the first diode and the second diode are connected to the bypass module.

[0019] Furthermore, the signal gating module includes: a first NMOS transistor and a second NMOS transistor;

[0020] The output terminal of the main card current sharing control module is connected to the drain and gate of the first NMOS transistor, the output terminal of the backup card current sharing control module is connected to the drain and gate of the second NMOS transistor, and the source of the first NMOS transistor and the source of the second NMOS transistor are connected to the bypass module.

[0021] Furthermore, the current sharing control system also includes: a filter;

[0022] The signal gating module is connected to the switching transistor of the bypass module via the filter. The filter is used to filter the target driving signal and output it to the switching transistor of the bypass module.

[0023] This application also provides a current sharing control method for a bypass module, which is applied to a current sharing control system. The current sharing control system includes: a primary card current sharing control module, a backup card current sharing control module, and a signal gating module.

[0024] The flow sharing control method includes:

[0025] The main card current sharing control module is controlled to obtain the first conduction angle of the switching transistor in the bypass module based on the target current sharing current and the first output current of the bypass module obtained by sampling, and the drive signal corresponding to the first conduction angle is output to the signal gating module.

[0026] The backup card current sharing control module is controlled to obtain the second conduction angle of the switching transistor in the bypass module based on the target current sharing current and the sampled second output current of the bypass module, and outputs the drive signal corresponding to the second conduction angle to the signal gating module.

[0027] The signal selection module is controlled to select a normal target drive signal from the drive signal corresponding to the first conduction angle and the drive signal corresponding to the second conduction angle, and drive the switching transistor of the bypass module.

[0028] This application embodiment also provides a current sharing control device for a bypass module, including:

[0029] Central processing unit, memory, input / output interface, wired or wireless network interface, power supply;

[0030] The memory is either a short-term storage memory or a persistent storage memory;

[0031] The central processing unit is configured to communicate with the memory and execute instructions in the memory on a control plane functional entity to perform the methods described above.

[0032] This application also provides a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the method described above.

[0033] As can be seen from the above technical solutions, the embodiments of this application have the following advantages:

[0034] In the current sharing control system of the bypass module in this embodiment, the main card current sharing control module is connected to the signal gating module. It is used to obtain the first conduction angle of the switching transistor in the bypass module based on the target current sharing current and the sampled first output current of the bypass module, and output the drive signal corresponding to the first conduction angle to the signal gating module. The backup card current sharing control module is connected to the signal gating module. It is used to obtain the second conduction angle of the switching transistor in the bypass module based on the target current sharing current and the sampled second output current of the bypass module, and output the drive signal corresponding to the second conduction angle to the signal gating module. The signal gating module is connected to the switching transistor of the bypass module. It is used to select a normal target drive signal from the drive signal corresponding to the first conduction angle and the drive signal corresponding to the second conduction angle, and drive the switching transistor of the bypass module. Therefore, the main card current sharing control module and the backup card current sharing control module are redundant backups of each other during current sharing control, effectively preventing bypass current sharing failure of the bypass module. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0036] Figure 1 This is a block diagram of a current sharing control system for a bypass module disclosed in an embodiment of this application;

[0037] Figure 2 This is a schematic diagram of the current sharing control system of a bypass module disclosed in an embodiment of this application;

[0038] Figure 3 This is a flow sharing control flowchart of a bypass module disclosed in an embodiment of this application;

[0039] Figure 4 This is a diagram of a current sharing control device for a bypass module disclosed in an embodiment of this application. Detailed Implementation

[0040] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0041] In the description of the embodiments of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0042] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0043] In existing UPS systems, multiple bypass modules are connected in parallel to power the load. For example, when providing three-phase AC power to the load during bypass, three bypass modules can each provide current to a specific phase of the three-phase AC power. In this case, it is necessary to share the output current of the multiple bypass modules to ensure that the output currents of all bypass modules are equal. This is often achieved by controlling the conduction angle of the switching transistors in the bypass modules through software to equalize the bypass impedance of the multiple parallel bypass modules, thus realizing bypass current sharing. When the bypass current sharing of one bypass module fails, it can easily affect the bypass current sharing of other bypass modules. Therefore, this application provides a bypass module current sharing control system to effectively prevent bypass current sharing failure. Figure 1 As shown, the details are as follows:

[0044] This application provides a current sharing control system for a bypass module, wherein multiple bypass modules are connected in parallel to carry a load (i.e., the output terminals of multiple bypass modules are connected in parallel to the load), and each bypass module has a corresponding current sharing control system. In this application embodiment, the current sharing control system for the bypass module includes: a primary card current sharing control module 100, a backup card current sharing control module 200, and a signal gating module 300; the primary card current sharing control module 100, the backup card current sharing control module 200, and the signal gating module 300 are all hardware modules; the primary card current sharing control module 100 and the backup card current sharing control module 200 can be integrated into a processor, such as a CPU (Central Processing Unit) or an MCU (Microcontroller), and the specific integration is not limited here.

[0045] The main card current sharing control module 100, connected to the signal gating module 300, is used to obtain the first conduction angle of the switching transistor in the bypass module based on the target current sharing current and the sampled first output current of the bypass module, and outputs the drive signal corresponding to the first conduction angle to the signal gating module. It can be understood that the target current sharing current is obtained by dividing the load current by the number of parallel bypass modules, meaning that the output current of each parallel bypass module is the target current sharing current, achieving bypass current sharing among multiple parallel bypass modules. The first conduction angle is the starting angle at which the switching transistor in the bypass module conducts AC power within one AC cycle. The switching transistor in the bypass module can be an SCR (Silicon Controlled Rectifier, also known as a thyristor) or a MOSFET; the specific choice is not limited here.

[0046] Specifically, the current sharing control process of the main card current sharing control module 100 is as follows: The first conduction angle of the switching transistor in the bypass module is adjusted based on the current difference between the target current sharing current and the first output current of the bypass module. That is, when the current difference is positive (i.e., the target current sharing current is greater than the first output current of the bypass module), the first conduction angle is increased; the larger the current difference, the larger the corresponding first conduction angle. When the current difference is negative (i.e., the target current sharing current is less than the first output current of the bypass module), the first conduction angle is decreased; the larger the current difference, the smaller the corresponding first conduction angle.

[0047] The backup card current sharing control module 200, connected to the signal gating module 300, is used to determine the second conduction angle of the switching transistor in the bypass module based on the target current sharing current and the sampled second output current of the bypass module, and outputs the drive signal corresponding to the second conduction angle to the signal gating module. It can be understood that the current sharing control process of the backup card current sharing control module is similar to that of the primary card current sharing control module described above, and will not be elaborated further here. It is understandable that when the current sampling accuracy of the main card current sharing control module 100 is the same as that of the backup card current sharing control module 200, the second output current sampled by the backup card current sharing control module 200 is the same as the first output current sampled by the main card current sharing control module 100. At the same time, when there is no abnormality in the current sharing control of the main card current sharing control module 100 and the backup card current sharing control module 200, the second conduction angle obtained by the backup card current sharing control module 200 is the same as the first conduction angle obtained by the main card current sharing control module 100, that is, the driving signal corresponding to the first conduction angle is the same as the driving signal corresponding to the second conduction angle.

[0048] The signal selection module 300, connected to the switching transistor of the bypass module, selects a normal target driving signal from the driving signals corresponding to the first conduction angle and the second conduction angle. This signal drives the switching transistor of the bypass module, ensuring that the bypass impedance of the bypass module matches the target current-sharing current, and that the output current of the bypass module is equal to the target current-sharing current. By employing this current-sharing control system on multiple parallel bypass modules, the output currents of the multiple bypass modules can be shared.

[0049] It is understandable that when the drive signal corresponding to the first conduction angle output by the primary card current sharing control module 100 is the same as the drive signal corresponding to the second conduction angle output by the backup card current sharing control module 200, that is, the signal level of the drive signal corresponding to the first conduction angle and the drive signal corresponding to the second conduction angle are the same, the target drive signal selected by the signal selection module 300 is: the drive signal corresponding to the first conduction angle and the drive signal corresponding to the second conduction angle, that is, the target drive signal is consistent with the drive signal corresponding to the first conduction angle (or the drive signal corresponding to the second conduction angle). When the current sharing control of the primary card current sharing control module 100 or the backup card current sharing control module 200 is abnormal, the signal levels of the drive signal corresponding to the first conduction angle and the drive signal corresponding to the second conduction angle will differ. Under normal circumstances, when the current sharing control module is abnormal, the output drive signal is a low-level signal, and when the current sharing control module is normal, the output drive signal is a high-level signal. At this time, the signal gating module 300 automatically restricts the low-level signal from passing through and automatically conducts the high-level signal to avoid the signal levels of the drive signal corresponding to the first conduction angle and the drive signal corresponding to the second conduction angle being inconsistent at the same time, effectively preventing level interference.

[0050] In this embodiment, it is not necessary to detect whether the primary card current sharing control module 100 is abnormal before switching to the backup card. When the primary card current sharing control module 100 is abnormal, the signal gating module 300 automatically limits the abnormal low-level signal output by the primary card current sharing control module 100 and automatically turns on the high-level signal output by the backup card current sharing control module 200, thereby switching to the backup card current sharing control module 200 for current sharing control. Similarly, it is not necessary to detect whether the backup card current sharing control module 100 is abnormal before switching to the primary card.

[0051] As can be seen, in the current sharing control system of the bypass module in this embodiment, the main card current sharing control module is connected to the signal gating module and is used to obtain the first conduction angle of the switch in the bypass module based on the target current sharing current and the sampled first output current of the bypass module, and output the drive signal corresponding to the first conduction angle to the signal gating module; the backup card current sharing control module is connected to the signal gating module and is used to obtain the second conduction angle of the switch in the bypass module based on the target current sharing current and the sampled second output current of the bypass module, and output the drive signal corresponding to the second conduction angle to the signal gating module; the signal gating module is connected to the switch of the bypass module and is used to select the normal target drive signal from the drive signal corresponding to the first conduction angle and the drive signal corresponding to the second conduction angle to drive the switch of the bypass module. Therefore, the main card current sharing control module and the backup card current sharing control module are redundant backups of each other during current sharing control, which can effectively prevent bypass current sharing failure of the bypass module.

[0052] Furthermore, the following will combine Figure 2 The current sharing control system of the bypass module in the embodiments of this application is described in detail below:

[0053] In this embodiment, the main card current sharing control module 100 includes a first current sampler and a current sharing controller. The first current sampler can be a Hall sensor, a resistive sensor, or a mutual inductance sensor, and the specific type is not limited here. The first current sampler is used to sample the first output current RMS_I1 of the bypass module. In the main card current sharing control module 100, the current difference between the target current sharing current AVE_I and the first output current RMS_I1 can be calculated. In the main card current sharing control module 100, the input terminal of the current sharing controller receives the current difference between the target current sharing current AVE_I and the first output current RMS_I1. The current sharing controller is used to obtain the first conduction angle of the switching transistor in the bypass module based on the current difference. The output of the current sharing controller is the first conduction angle. .

[0054] In this embodiment, the backup card current sharing control module 200 includes a second current sampler and a current sharing controller. The second current sampler can be a Hall sensor, a resistive sensor, or a mutual inductance sensor, and is not specifically limited here. The second current sampler is used to sample the second output current RMS_I2 of the bypass module. In the backup card current sharing control module 200, the input terminal of the current sharing controller is input to the current difference between the target current sharing current AVE_I and the second output current RMS_I2. The current sharing controller is used to obtain the second conduction angle of the switching transistor in the bypass module based on the current difference. The output terminal of the current sharing controller outputs the second conduction angle. .

[0055] Furthermore, in this embodiment, the current sharing control system of the bypass module prioritizes the main card current sharing control module for current sharing control. When the main card current sharing control module malfunctions, the signal selection module automatically selects the drive signal output by the backup card current sharing control module, thereby switching the main card current sharing control module to the backup card current sharing control module. When there is a difference between the sampling accuracy of the first current sampler in the main card current sharing control module and the sampling accuracy of the second current sampler in the backup card current sharing control module, the second conduction angle obtained in the backup card current sharing control module... The first conduction angle obtained from the main card current sharing control module There is a difference: when switching to the backup card current sharing control module for current sharing control (i.e., when switching hardware drivers), the bypass current sharing effect will be affected. Therefore, in this embodiment, the backup card current sharing control module of the current sharing control system further includes: a backup card limiting controller, which limits the second conduction angle obtained in the backup card current sharing control module. This ensures that when switching to the backup card current sharing control module for current sharing control, the bypass current sharing effect remains unaffected.

[0056] The backup card limit controller is connected to the current sharing controller of the backup card current sharing control module 200, and is used to obtain the first conduction angle obtained by the main card current sharing control module 100. That is, the current sharing controller in the main card current sharing control module 100 is communicatively connected to the backup card limiter controller, and the obtained first conduction angle can be... Real-time sharing with the backup card limiter controller. This backup card limiter controller is used to limit the second conduction angle of the current sharing controller output of the backup card current sharing control module 200. Less than or equal to the first conduction angle That is, the backup card limit controller controls ≤ Specifically, when the conduction angle obtained by the current sharing controller of the backup card current sharing control module 200 is greater than the first conduction angle... Then the second conduction angle Set to equal to the first conduction angle When the conduction angle obtained by the current sharing controller of the backup card current sharing control module 200 is less than or equal to the first conduction angle. Then the second conduction angle Set to the conduction angle obtained by this current sharing controller.

[0057] Furthermore, the signal selection module 300 includes: a first diode D1 and a second diode D2; the output terminal of the main card current sharing control module 100 is connected to the anode of the first diode D1, that is, the output terminal of the current sharing control cabinet of the main card current sharing control module 100 is connected to the anode of the first diode D1; the output terminal of the backup card current sharing control module 200 is connected to the anode of the second diode D2, that is, the output terminal of the current sharing control cabinet of the backup card current sharing control module 200 is connected to the anode of the second diode D2. The cathodes of the first diode D1 and the second diode D2 are connected to the bypass module. That is, when the main card current sharing control module 100 and the backup card current sharing control module 200 output hardware, the first diode D1 and the second diode D2 are connected in parallel to jointly drive the bypass module to perform bypass current sharing.

[0058] It is understood that the signal gating module 300 is used to select high-level signals and restrict low-level signals; the specific circuit structure is not limited here. In one feasible embodiment (not shown in the figure), the signal gating module 300 includes: a first NMOS transistor and a second NMOS transistor; the output terminal of the main card current sharing control module 100 is connected to the drain and gate of the first NMOS transistor, the output terminal of the backup card current sharing control module 200 is connected to the drain and gate of the second NMOS transistor, and the source of the first NMOS transistor and the source of the second NMOS transistor are connected to the bypass module.

[0059] Furthermore, in this embodiment, the current sharing control system further includes a filter; the signal gating module is connected to the switching transistor of the bypass module via the filter, and the filter is used to filter the target drive signal and output it to the switching transistor of the bypass module. It is understood that the filter can be a filter circuit composed of capacitors, inductors, and resistors, and can be a low-pass filter. This filter can remove noise and interference from the target drive signal during transmission, ensuring that the bypass current sharing of the bypass module proceeds normally.

[0060] This application also provides a current sharing control method for a bypass module, which is applied to a current sharing control system. The current sharing control system includes a primary card current sharing control module, a backup card current sharing control module, and a signal gating module.

[0061] The current sharing control method is as follows: Figure 3 As shown, the specific steps include the following:

[0062] 301. The main card current sharing control module obtains the first conduction angle of the switching transistor in the bypass module based on the target current sharing current and the first output current of the bypass module, and outputs the drive signal corresponding to the first conduction angle to the signal selection module.

[0063] In this embodiment of the application, the main card current sharing control module can be controlled to obtain the first conduction angle of the switching transistor in the bypass module based on the target current sharing current and the first output current of the bypass module obtained by sampling, and output the drive signal corresponding to the first conduction angle to the signal selection module.

[0064] 302. The backup card current sharing control module obtains the second conduction angle of the switching transistor in the bypass module based on the target current sharing current and the second output current of the bypass module, and outputs the drive signal corresponding to the second conduction angle to the signal selection module.

[0065] In this embodiment of the application, the backup card current sharing control module can be controlled to obtain the second conduction angle of the switching transistor in the bypass module based on the target current sharing current and the sampled second output current of the bypass module, and output the drive signal corresponding to the second conduction angle to the signal selection module.

[0066] 303. The control signal selection module selects the normal target drive signal from the drive signal corresponding to the first conduction angle and the drive signal corresponding to the second conduction angle to drive the switching transistor of the bypass module.

[0067] In this embodiment of the application, a control signal selection module can select a normal target drive signal from the drive signal corresponding to the first conduction angle and the drive signal corresponding to the second conduction angle to drive the switching transistor of the bypass module.

[0068] As can be seen, the current sharing control method of this application embodiment can perform redundant switching between the primary card current sharing control module and the backup card current sharing control module in the current sharing control system through a software current sharing control algorithm. That is, the primary card current sharing control module is controlled to obtain a drive signal at the first conduction angle, and the backup card current sharing control module is controlled to obtain a drive signal at the second conduction angle. The normal target drive signal is selected from the drive signals corresponding to the first conduction angle and the drive signals corresponding to the second conduction angle through a control signal selection module, thereby realizing the redundant switching between the primary card current sharing control module and the backup card current sharing control module; effectively preventing the bypass current sharing failure of the bypass module.

[0069] This application embodiment also provides a current sharing control device 400 for a bypass module, such as... Figure 4 As shown, the flow sharing control device 400 of this application embodiment may include one or more central processing units (CPUs) 401 and a memory 402, wherein the memory 402 stores one or more application programs or data.

[0070] The memory 402 can be volatile or persistent storage. The program stored in the memory 402 can include one or more modules, each module including a series of instruction operations on the electronic device. Furthermore, the central processing unit 401 can be configured to communicate with the memory 602 and execute the series of instruction operations in the memory 402 on the current sharing control device 400.

[0071] The current sharing control device 400 may also include one or more power supplies 405, one or more wired or wireless network interfaces 404, one or more input / output interfaces 403, and / or one or more operating systems, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, etc.

[0072] The central processing unit 401 can perform the operations performed by the first aspect or any specific method embodiment of the first aspect, which will not be described in detail here.

[0073] This application also provides a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the method described above.

[0074] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0075] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0076] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0077] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0078] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, 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. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

Claims

1. A current sharing control system for bypass modules, a plurality of said bypass modules being connected in parallel with a load, characterized in that, The application relates to a current sharing control system of a bypass module. The main card current sharing control module is connected with the signal gating module and is used for obtaining a first conduction angle of a switch tube in the bypass module based on a target current sharing current and a first output current of the bypass module obtained by sampling, and outputting a driving signal corresponding to the first conduction angle to the signal gating module. The backup card current sharing control module is connected with the signal gating module and is used for obtaining a second conduction angle of a switch tube in the bypass module based on the target current sharing current and a second output current of the bypass module obtained by sampling, and outputting a driving signal corresponding to the second conduction angle to the signal gating module. The signal gating module is connected with the switch tube of the bypass module and is used for selecting a normal target driving signal from the driving signal corresponding to the first conduction angle and the driving signal corresponding to the second conduction angle, and driving the switch tube of the bypass module. The main card current sharing control module comprises a first current sampler and a current sharing controller.

2. The current sharing control system of claim 1, wherein, The first current sampler is used for sampling the first output current of the bypass module. The input end of the current sharing controller inputs a current difference value of the target current sharing current and the first output current, and the output end of the current sharing controller outputs the first conduction angle of the switch tube in the bypass module based on the current difference value. The backup card current sharing control module comprises a second current sampler and a current sharing controller.

3. The current sharing control system of claim 1, wherein, The second current sampler is used for sampling the second output current of the bypass module. The input end of the current sharing controller inputs a current difference value of the target current sharing current and the second output current, and the output end of the current sharing controller outputs the second conduction angle of the switch tube in the bypass module based on the current difference value. The backup card current sharing control module further comprises a backup card amplitude limiting controller.

4. The current sharing control system of claim 3, wherein, The backup card amplitude limiting controller is connected with the current sharing controller of the backup card current sharing control module, is used for obtaining the first conduction angle obtained by the main card current sharing control module, and limits the second conduction angle output by the current sharing controller of the backup card current sharing control module to be less than or equal to the first conduction angle. The signal gating module comprises a first diode and a second diode.

5. The current sharing control system of claim 1, wherein, The output end of the main card current sharing control module is connected with the anode of the first diode, the output end of the backup card current sharing control module is connected with the anode of the second diode, and the cathode of the first diode and the cathode of the second diode are connected with the bypass module. The signal gating module comprises a first NMOS tube and a second NMOS tube.

6. The current sharing control system of claim 1, wherein, The output end of the main card current sharing control module is connected with the drain and the gate of the first NMOS tube, the output end of the backup card current sharing control module is connected with the drain and the gate of the second NMOS tube, and the source of the first NMOS tube and the source of the second NMOS tube are connected with the bypass module. The current sharing control system further comprises a filter.

7. The current sharing control system of claim 1, wherein, ​ The signal gating module is connected with the switch tube of the bypass module through the filter, and the filter is used to filter the target drive signal and output the filtered target drive signal to the switch tube of the bypass module.

8. A current sharing control method of a bypass module, characterized by, The application is applied to a current sharing control system, and the current sharing control system comprises a master card current sharing control module, a backup card current sharing control module and a signal gating module. The current sharing control method comprises: The master card current sharing control module is controlled to obtain a first conduction angle of the switch tube in the bypass module based on a target current sharing current and a first output current of the bypass module sampled, and a drive signal corresponding to the first conduction angle is output to the signal gating module; The backup card current sharing control module is controlled to obtain a second conduction angle of the switch tube in the bypass module based on the target current sharing current and a second output current of the bypass module sampled, and a drive signal corresponding to the second conduction angle is output to the signal gating module; The signal gating module is controlled to select a normal target drive signal from the drive signal corresponding to the first conduction angle and the drive signal corresponding to the second conduction angle, and drive the switch tube of the bypass module.

9. A current sharing control device for bypassing a module, comprising: It comprises: a central processor, a memory, an input and output interface, a wired or wireless network interface and a power supply; The memory is a transient storage memory or a persistent storage memory; The central processor is configured to communicate with the memory, execute instruction operation in the memory on a control plane function entity to execute the method in claim 8.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium comprises instructions which, when executed on a computer, cause the computer to execute the method in claim 8.

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