High-voltage DC output module and high-voltage DC output module output control method
By connecting multiple preset DC output modules in series in the high-voltage DC output module and setting current and voltage using controllers, the problem of difficulty in realizing high-voltage DC output module in the existing technology is solved, and voltage output of 1500V and above is realized. The equalization of output power reduces costs and provides a basis for electric vehicles to increase charging voltage.
Patent Information
- Application Number
- CN202411470356.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-02-21
Smart Images
Figure CN119496380A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of direct current output modules, and in particular to a high-voltage direct current output module and an output control method of the high-voltage direct current output module. Background Art
[0002] Due to the material limitations of silicon-based switching devices and silicon carbide switching devices at this stage, as well as the reliability of the devices and the need to reduce the voltage rating, most of the current electric vehicle charging modules have a maximum voltage of 1000V. For power conversion scenarios that require 1500V and above, it is difficult for current charging modules to achieve this.
[0003] In the process of realizing the high-voltage charging module, the inventor found that when the low-voltage charging modules are directly connected in series to obtain the high-voltage charging module, the output power of each low-voltage charging module will jump during use, and the output power of the module is not directly evenly divided, and the output power of each low-voltage charging module under high-power conditions is very different. However, if a high-voltage silicon carbide MOS is used to achieve a voltage output of more than 1500V, the product cost will also be very high and lack market competitiveness. Summary of the invention
[0004] The embodiments of the present invention provide a high-voltage direct current output module and a high-voltage direct current output module output control method to solve the problem that it is currently difficult to implement a direct current output module with a high voltage of, for example, 1500V or above at a low cost.
[0005] In a first aspect, an embodiment of the present invention provides a high-voltage direct current output module, comprising: N preset direct current output modules connected in series and a controller;
[0006] The controller is used to:
[0007] A first mode setting instruction is received to control, when the load of the high-voltage DC output module is a capacitive load, a current setting value of a preset DC output module among the preset DC output modules to be the current required by the load, a voltage setting value of the preset DC output module to be greater than 1 / N of the voltage required by the load, a current setting value of other preset DC output modules to be greater than the current required by the load, and a voltage setting value of other preset DC output modules to be 1 / N of the voltage required by the load.
[0008] In a possible implementation, controlling the voltage setting value of the preset DC output module to be greater than 1 / N of the voltage required by the load includes:
[0009] Controlling the voltage setting value of the preset DC output module to be a target voltage value, wherein the target voltage value is greater than or equal to the sum of 1 / N of the voltage required by the load and a preset minimum voltage increment, and the target voltage value is less than an overvoltage threshold value of the preset DC output module;
[0010] The controlling the current setting value of other preset DC output modules to be greater than the current required by the load comprises:
[0011] The current setting value of other preset DC output modules is controlled to be a target current value, wherein the target current value is greater than or equal to the sum of the current required by the load and a preset minimum current increment, and the target current value is less than the overcurrent threshold of the preset DC output module.
[0012] In a possible implementation manner, the controller is further configured to:
[0013] A second mode setting instruction is received to control the current setting value of each preset DC output module to be the current required by the load and to control the voltage setting value of each preset DC output module to be 1 / N of the voltage required by the load when the load of the high-voltage DC output module is a resistive load.
[0014] In a possible implementation manner, after receiving the first mode setting instruction or receiving the second mode setting instruction, the method further includes:
[0015] Get the status of each preset DC output module;
[0016] If there is a preset DC output module in a derated state, the current setting value and the voltage setting value of each preset DC output module are corrected according to the maximum output current and the maximum output voltage of the preset DC output module in the derated state; the derated state is a state in which the rated output power is reduced.
[0017] In a second aspect, an embodiment of the present invention provides a high-voltage DC output module output control method, which is applied to a high-voltage DC output module composed of N preset DC output modules connected in series and a controller, and the method includes:
[0018] A first mode setting instruction is received to control, when the load of the high-voltage DC output module is a capacitive load, a current setting value of a preset DC output module among the preset DC output modules to be the current required by the load, a voltage setting value of the preset DC output module to be greater than 1 / N of the voltage required by the load, a current setting value of other preset DC output modules to be greater than the current required by the load, and a voltage setting value of other preset DC output modules to be 1 / N of the voltage required by the load.
[0019] In a possible implementation, controlling the voltage setting value of the preset DC output module to be greater than 1 / N of the voltage required by the load includes:
[0020] Controlling the voltage setting value of the preset DC output module to be a target voltage value, wherein the target voltage value is greater than or equal to the sum of 1 / N of the voltage required by the load and a preset minimum voltage increment, and the target voltage value is less than an overvoltage threshold value of the preset DC output module;
[0021] The controlling the current setting value of other preset DC output modules to be greater than the current required by the load comprises:
[0022] The current setting value of other preset DC output modules is controlled to be a target current value, wherein the target current value is greater than or equal to the sum of the current required by the load and a preset minimum current increment, and the target current value is less than the overcurrent threshold of the preset DC output module.
[0023] In a possible implementation, the high voltage direct current output module output control method further includes:
[0024] A second mode setting instruction is received to control the current setting value of each preset DC output module to be the current required by the load and to control the voltage setting value of each preset DC output module to be 1 / N of the voltage required by the load when the load of the high-voltage DC output module is a resistive load.
[0025] In a possible implementation manner, after receiving the first mode setting instruction or receiving the second mode setting instruction, the method further includes:
[0026] Get the status of each preset DC output module;
[0027] If there is a preset DC output module in a derated state, the current setting value and the voltage setting value of each preset DC output module are corrected according to the maximum output current and the maximum output voltage of the preset DC output module in the derated state; the derated state is a state in which the rated output power is reduced.
[0028] In a third aspect, an embodiment of the present invention provides a controller comprising a memory and a processor, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the steps of the method described in the second aspect or any possible implementation of the second aspect.
[0029] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method described in the first aspect or any possible implementation method of the first aspect are implemented.
[0030] The embodiment of the present invention provides a high-voltage direct current output module and a high-voltage direct current output module output control method. The high-voltage direct current output module is formed by N preset direct current output modules and a controller connected in series. The controller receives a first mode setting instruction, so that when the load of the high-voltage direct current output module is a capacitive load, the current setting value of a preset direct current output module among the preset direct current output modules is controlled to be the current required by the load, the voltage setting value of the preset direct current output module is controlled to be greater than 1 / N of the voltage required by the load, the current setting value of other preset direct current output modules is controlled to be greater than the current required by the load, and the voltage setting value of other preset direct current output modules is controlled to be 1 / N of the voltage required by the load. Therefore, based on the preset DC output module of the low voltage level, a voltage output of 1500V or even higher can be achieved, and by controlling the current setting value of a preset DC output module among the preset DC output modules connected in series to be the current required by the load, the voltage setting value of the preset DC output module is controlled to be greater than 1 / N of the voltage required by the load. By clamping, when the load of the high voltage DC output module is a capacitive load (such as a battery to be charged), the output power of each preset DC output module is evenly distributed, avoiding the phenomenon that the output power of the preset DC output modules connected in series due to the capacitive load jumps, which is beneficial to reducing the implementation cost of the high voltage DC output module and also lays the foundation for further improving the charging voltage of electric vehicles in the future. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0032] Figure 1 is a structural schematic diagram of a high-voltage direct current output module provided by an embodiment of the present invention;
[0033] Figure 2 It is a structural schematic diagram of a high-voltage direct current output module output control device provided by an embodiment of the present invention;
[0034] Figure 3 is a schematic diagram of a controller provided by an embodiment of the present invention. DETAILED DESCRIPTION
[0035] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.
[0036] In order to make the purpose, technical solutions and advantages of the present invention more clear, specific embodiments will be described below in conjunction with the accompanying drawings.
[0037] like Figure 1 As shown, the high-voltage direct current output module provided by the embodiment of the present invention includes: N preset direct current output modules connected in series and a controller.
[0038] Among them, the controller is used to:
[0039] A first mode setting instruction is received to control, when the load of the high-voltage DC output module is a capacitive load, a current setting value of a preset DC output module among the preset DC output modules to be the current required by the load, a voltage setting value of the preset DC output module to be greater than 1 / N of the voltage required by the load, a current setting value of other preset DC output modules to be greater than the current required by the load, and a voltage setting value of other preset DC output modules to be 1 / N of the voltage required by the load.
[0040] Among them, the preset DC output module can be a DC output module of low voltage level (i.e., charging module). Control the current setting value of a preset DC output module among the preset DC output modules to be the current required by the load, control the voltage setting value of the preset DC output module to be greater than 1 / N of the voltage required by the load, control the current setting value of other preset DC output modules to be greater than the current required by the load, and control the voltage setting value of other preset DC output modules to be 1 / N of the voltage required by the load. That is, control the overall high-voltage DC output module to work in constant current mode, control a preset DC output module to work in constant current mode, and control other preset DC output modules to work in constant voltage mode. At this time, since the preset DC output modules are connected in series, the current in the series circuit is equal everywhere. Therefore, even if the current setting value of a preset DC output module is controlled to be the current required by the load, and the current setting value of other preset DC output modules is controlled to be greater than the current required by the load, the output current of other preset DC output modules will be clamped at the current required by the load. Similarly, even if the voltage setting value of a preset DC output module is greater than 1 / N of the voltage required by the load, and the voltage setting value of other preset DC output modules is 1 / N of the voltage required by the load, because the total output voltage is the voltage required by the load, the output voltage of a preset DC output module will also be clamped at 1 / N of the voltage required by the load. Therefore, by setting different current setting values and voltage setting values in different modes by the controller, the output power of each preset DC output module can be evenly distributed, avoiding the phenomenon that the output power of the preset DC output modules directly connected in series due to capacitive loads jumps, so that a higher voltage power conversion scheme can be easily implemented without changing the structure of the preset DC output module, which is conducive to reducing the implementation cost of high-voltage DC output modules and laying a foundation for further improving the charging voltage of electric vehicles in the future.
[0041] For example, when two preset DC output modules with output capacity of 50V to 1000V are connected, Figure 1 The connection shown can easily achieve a voltage output of 100V to 2000V without changing the structure of the original preset DC output module, which is fast, effective and low-cost to implement.
[0042] In one embodiment, controlling the voltage setting value of the preset DC output module to be greater than 1 / N of the voltage required by the load may include:
[0043] The voltage setting value of the preset DC output module is controlled to be a target voltage value, the target voltage value is greater than or equal to the sum of 1 / N of the voltage required by the load and a preset minimum voltage increment, and the target voltage value is less than an overvoltage threshold of the preset DC output module.
[0044] Controlling the current setting value of other preset DC output modules to be greater than the current required by the load may include:
[0045] The current setting value of other preset DC output modules is controlled to be a target current value, the target current value is greater than or equal to the sum of the current required by the load and the preset minimum current increment, and the target current value is less than the overcurrent threshold of the preset DC output module.
[0046] In this embodiment, in order to use a certain preset DC output module to make the output current of each preset DC output module the current required by the load and the output voltage 1 / N of the voltage required by the load, when determining the voltage setting value of the preset DC output module and the current setting value of other preset DC output modules, the degree to which the voltage setting value is greater than 1 / N of the voltage required by the load and the degree to which the current setting value is greater than the current required by the load should not be too large or too small. If it is too small, it cannot enter the clamping state, and if it is too large, it is easy to cause overcurrent or overvoltage. Therefore, the preset minimum voltage increment and the preset minimum current increment can be determined based on experience, according to the application scenario, voltage type, voltage level, module accuracy, etc. of the preset DC output module.
[0047] For example, for a charging pile or energy storage power station, the preset minimum voltage increment can be 5V, and the preset minimum current increment can be 1A. At this time, the voltage setting value of a preset DC output module can be controlled to be 1 / N+5V of the voltage required by the load, and the current setting value of other preset DC output modules can be controlled to be the current required by the load+1A. For example, the voltage setting value and the current setting value can also be larger, as long as they do not exceed the corresponding overvoltage threshold and overcurrent threshold.
[0048] In one embodiment, the controller is further configured to:
[0049] A second mode setting instruction is received to control the current setting value of each preset DC output module to be the current required by the load and to control the voltage setting value of each preset DC output module to be 1 / N of the voltage required by the load when the load of the high-voltage DC output module is a resistive load.
[0050] In this embodiment, in order to improve the applicability of the high-voltage DC output module, through mode setting, when the load of the high-voltage DC output module is a resistive load, for example, in a scenario where heating is provided by a heating resistor, each preset DC output module can be controlled to operate in a constant voltage mode, that is, the current setting value of each preset DC output module is controlled to be the current required by the load, and the voltage setting value of each preset DC output module is controlled to be 1 / N of the voltage required by the load.
[0051] In one embodiment, after receiving the first mode setting instruction or receiving the second mode setting instruction, the method may further include:
[0052] Get the status of each preset DC output module.
[0053] If there is a preset DC output module in a derated state, the current setting value and the voltage setting value of each preset DC output module are corrected according to the maximum output current and the maximum output voltage of the preset DC output module in the derated state; the derated state is a state in which the rated output power is reduced.
[0054] In this embodiment, considering that each preset DC output module may have abnormal conditions such as overvoltage, overcurrent, overheating, etc. during operation, therefore, after the controller receives the first mode setting instruction or the second mode setting instruction, the state of each preset DC output module can be obtained first. If the states of each preset DC output module are normal, a startup instruction and corresponding instructions for adjusting the voltage setting value and the current setting value can be sent to each preset DC output module. If the state of a preset DC output module is abnormal, then when it cannot work (for example, when it is burned out) according to the abnormal state feedback, each preset DC output module can be controlled to shut down. Or when it cannot provide rated output power (that is, when it is in a derated state), according to the maximum output current and maximum output voltage of the preset DC output module in the derated state, the current setting value and voltage setting value of each preset DC output module are corrected, and the corrected current setting value and voltage setting value are sent to each preset DC output module.
[0055] In another embodiment, the present invention further provides a high-voltage DC output module output control method, which is applied to a high-voltage DC output module composed of N series-connected preset DC output modules and a controller, and is described in detail as follows:
[0056] A first mode setting instruction is received to control, when the load of the high-voltage DC output module is a capacitive load, a current setting value of a preset DC output module among the preset DC output modules to be the current required by the load, a voltage setting value of the preset DC output module to be greater than 1 / N of the voltage required by the load, a current setting value of other preset DC output modules to be greater than the current required by the load, and a voltage setting value of other preset DC output modules to be 1 / N of the voltage required by the load.
[0057] Optionally, controlling the voltage setting value of the preset DC output module to be greater than 1 / N of the voltage required by the load may include:
[0058] The voltage setting value of the preset DC output module is controlled to be a target voltage value, the target voltage value is greater than or equal to the sum of 1 / N of the voltage required by the load and a preset minimum voltage increment, and the target voltage value is less than an overvoltage threshold of the preset DC output module.
[0059] Controlling the current setting value of other preset DC output modules to be greater than the current required by the load may include:
[0060] The current setting value of other preset DC output modules is controlled to be a target current value, the target current value is greater than or equal to the sum of the current required by the load and the preset minimum current increment, and the target current value is less than the overcurrent threshold of the preset DC output module.
[0061] Optionally, the high-voltage direct current output module output control method may further include:
[0062] A second mode setting instruction is received to control the current setting value of each preset DC output module to be the current required by the load and to control the voltage setting value of each preset DC output module to be 1 / N of the voltage required by the load when the load of the high-voltage DC output module is a resistive load.
[0063] Optionally, after receiving the first mode setting instruction or receiving the second mode setting instruction, the method may further include:
[0064] Get the status of each preset DC output module.
[0065] If there is a preset DC output module in a derated state, the current setting value and the voltage setting value of each preset DC output module are corrected according to the maximum output current and the maximum output voltage of the preset DC output module in the derated state; the derated state is a state in which the rated output power is reduced.
[0066] The embodiment of the present invention forms a high-voltage DC output module through N preset DC output modules and a controller connected in series, and receives a first mode setting instruction based on the controller, so that when the load of the high-voltage DC output module is a capacitive load, the current setting value of a preset DC output module among the preset DC output modules is controlled to be the current required by the load, the voltage setting value of the preset DC output module is controlled to be greater than 1 / N of the voltage required by the load, the current setting values of other preset DC output modules are controlled to be greater than the current required by the load, and the voltage setting values of other preset DC output modules are controlled to be 1 / N of the voltage required by the load. Therefore, based on the preset DC output module of the low voltage level, a voltage output of 1500V or even higher can be achieved, and by controlling the current setting value of a preset DC output module among the preset DC output modules connected in series to be the current required by the load, the voltage setting value of the preset DC output module is controlled to be greater than 1 / N of the voltage required by the load. By clamping, when the load of the high voltage DC output module is a capacitive load (such as a battery to be charged), the output power of each preset DC output module is evenly distributed, avoiding the phenomenon that the output power of the preset DC output modules connected in series due to the capacitive load jumps, which is beneficial to reducing the implementation cost of the high voltage DC output module and also lays the foundation for further improving the charging voltage of electric vehicles in the future.
[0067] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.
[0068] The following is an embodiment of the device of the present invention. For details not described in detail therein, reference may be made to the corresponding method embodiment described above.
[0069] Figure 2 The structure diagram of the high-voltage direct current output module output control device provided by the embodiment of the present invention is shown. For the convenience of description, only the part related to the embodiment of the present invention is shown, which is described in detail as follows:
[0070] like Figure 2 As shown, the high-voltage direct current output module output control device includes: a setting module 21.
[0071] The setting module 21 is used to receive a first mode setting instruction so as to control the current setting value of a preset DC output module among the preset DC output modules to be the current required by the load when the load of the high-voltage DC output module is a capacitive load, control the voltage setting value of the preset DC output module to be greater than 1 / N of the voltage required by the load, control the current setting values of other preset DC output modules to be greater than the current required by the load, and control the voltage setting values of other preset DC output modules to be 1 / N of the voltage required by the load.
[0072] The embodiment of the present invention forms a high-voltage DC output module through N preset DC output modules and a controller connected in series, and receives a first mode setting instruction based on the controller, so that when the load of the high-voltage DC output module is a capacitive load, the current setting value of a preset DC output module among the preset DC output modules is controlled to be the current required by the load, the voltage setting value of the preset DC output module is controlled to be greater than 1 / N of the voltage required by the load, the current setting values of other preset DC output modules are controlled to be greater than the current required by the load, and the voltage setting values of other preset DC output modules are controlled to be 1 / N of the voltage required by the load. Therefore, based on the preset DC output module of the low voltage level, a voltage output of 1500V or even higher can be achieved, and by controlling the current setting value of a preset DC output module among the preset DC output modules connected in series to be the current required by the load, the voltage setting value of the preset DC output module is controlled to be greater than 1 / N of the voltage required by the load. By clamping, when the load of the high voltage DC output module is a capacitive load (such as a battery to be charged), the output power of each preset DC output module is evenly distributed, avoiding the phenomenon that the output power of the preset DC output modules connected in series due to the capacitive load jumps, which is beneficial to reducing the implementation cost of the high voltage DC output module and also lays the foundation for further improving the charging voltage of electric vehicles in the future.
[0073] In one possible implementation, the setting module 21 can be used to control the voltage setting value of the preset DC output module to be a target voltage value, wherein the target voltage value is greater than or equal to the sum of 1 / N of the voltage required by the load and a preset minimum voltage increment, and the target voltage value is less than the overvoltage threshold of the preset DC output module; control the current setting value of other preset DC output modules to be a target current value, wherein the target current value is greater than or equal to the sum of the current required by the load and a preset minimum current increment, and the target current value is less than the overcurrent threshold of the preset DC output module.
[0074] In a possible implementation, the setting module 21 can also be used to receive a second mode setting instruction so that when the load of the high-voltage DC output module is a resistive load, the current setting value of each of the preset DC output modules is controlled to be the current required by the load, and the voltage setting value of each of the preset DC output modules is controlled to be 1 / N of the voltage required by the load.
[0075] In a possible implementation, module 21 is set and can also be used to obtain the status of each preset DC output module; if there is a preset DC output module in a derated state, the current setting value and the voltage setting value of each preset DC output module are corrected according to the maximum output current and the maximum output voltage of the preset DC output module in the derated state; the derated state is a state in which the rated output power is reduced.
[0076] Figure 3 is a schematic diagram of a controller provided by an embodiment of the present invention. Figure 3 As shown, the controller 3 of this embodiment includes: a processor 30, a memory 31, and a computer program 32 stored in the memory 31 and executable on the processor 30. When the processor 30 executes the computer program 32, the steps in the above-mentioned various high-voltage DC output module output control method embodiments are implemented. Alternatively, when the processor 30 executes the computer program 32, the functions of each module / unit in the above-mentioned various device embodiments are implemented, such as Figure 2 Module 21 is shown.
[0077] Exemplarily, the computer program 32 may be divided into one or more modules / units, one or more modules / units are stored in the memory 31 and executed by the processor 30 to implement the present invention. One or more modules / units may be a series of computer program instruction segments capable of implementing specific functions, and the instruction segments are used to describe the execution process of the computer program 32 in the controller 3. For example, the computer program 32 may be divided into Figure 2 Module 21 is shown.
[0078] The controller 3 may include, but is not limited to, a processor 30 and a memory 31. Those skilled in the art will appreciate that Figure 3 It is only an example of the controller 3 and does not constitute a limitation of the controller 3. The controller 3 may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the controller may also include input and output devices, network access devices, buses, etc.
[0079] The processor 30 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.
[0080] The memory 31 may be an internal storage unit of the controller 3, such as a hard disk or memory of the controller 3. The memory 31 may also be an external storage device of the controller 3, such as a plug-in hard disk, a smart memory card (SmartMedia Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the controller 3. Further, the memory 31 may also include both an internal storage unit of the controller 3 and an external storage device. The memory 31 is used to store computer programs and other programs and data required by the controller. The memory 31 may also be used to temporarily store data that has been output or is to be output.
[0081] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.
[0082] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0083] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.
[0084] In the embodiments provided by the present invention, it should be understood that the disclosed devices / controllers and methods can be implemented in other ways. For example, the device / controller embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.
[0085] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
[0086] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.
[0087] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned various high-voltage DC output module output control method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc.
[0088] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.
Claims
1. A high voltage DC output module, characterized in that: include: N preset DC output modules and controllers connected in series; The controller is used to: A first mode setting instruction is received to control, when the load of the high-voltage DC output module is a capacitive load, a current setting value of a preset DC output module among the preset DC output modules to be the current required by the load, a voltage setting value of the preset DC output module to be greater than 1 / N of the voltage required by the load, a current setting value of other preset DC output modules to be greater than the current required by the load, and a voltage setting value of other preset DC output modules to be 1 / N of the voltage required by the load.
2. The high voltage direct current output module according to claim 1, characterized in that: The step of controlling the voltage setting value of the preset DC output module to be greater than 1 / N of the voltage required by the load comprises: Controlling the voltage setting value of the preset DC output module to be a target voltage value, wherein the target voltage value is greater than or equal to the sum of 1 / N of the voltage required by the load and a preset minimum voltage increment, and the target voltage value is less than an overvoltage threshold value of the preset DC output module; The controlling the current setting value of other preset DC output modules to be greater than the current required by the load comprises: The current setting value of other preset DC output modules is controlled to be a target current value, wherein the target current value is greater than or equal to the sum of the current required by the load and a preset minimum current increment, and the target current value is less than the overcurrent threshold of the preset DC output module.
3. The high voltage direct current output module according to claim 1, characterized in that: The controller is also used for: A second mode setting instruction is received to control the current setting value of each preset DC output module to be the current required by the load and to control the voltage setting value of each preset DC output module to be 1 / N of the voltage required by the load when the load of the high-voltage DC output module is a resistive load.
4. The high voltage direct current output module according to claim 3, characterized in that: After receiving the first mode setting instruction or receiving the second mode setting instruction, the method further includes: Get the status of each preset DC output module; If there is a preset DC output module in a derated state, the current setting value and the voltage setting value of each preset DC output module are corrected according to the maximum output current and the maximum output voltage of the preset DC output module in the derated state; the derated state is a state in which the rated output power is reduced.
5. A high voltage DC output module output control method, characterized in that: Applied to a high-voltage DC output module consisting of N preset DC output modules and a controller connected in series, the method comprises: A first mode setting instruction is received to control, when the load of the high-voltage DC output module is a capacitive load, a current setting value of a preset DC output module among the preset DC output modules to be the current required by the load, a voltage setting value of the preset DC output module to be greater than 1 / N of the voltage required by the load, a current setting value of other preset DC output modules to be greater than the current required by the load, and a voltage setting value of other preset DC output modules to be 1 / N of the voltage required by the load.
6. The high voltage direct current output module output control method according to claim 5, characterized in that: The step of controlling the voltage setting value of the preset DC output module to be greater than 1 / N of the voltage required by the load comprises: Controlling the voltage setting value of the preset DC output module to be a target voltage value, wherein the target voltage value is greater than or equal to the sum of 1 / N of the voltage required by the load and a preset minimum voltage increment, and the target voltage value is less than an overvoltage threshold value of the preset DC output module; The controlling the current setting value of other preset DC output modules to be greater than the current required by the load comprises: The current setting value of other preset DC output modules is controlled to be a target current value, wherein the target current value is greater than or equal to the sum of the current required by the load and a preset minimum current increment, and the target current value is less than the overcurrent threshold of the preset DC output module.
7. The high voltage direct current output module output control method according to claim 5, characterized in that: Also includes: A second mode setting instruction is received to control the current setting value of each preset DC output module to be the current required by the load and to control the voltage setting value of each preset DC output module to be 1 / N of the voltage required by the load when the load of the high-voltage DC output module is a resistive load.
8. The high voltage direct current output module output control method according to claim 5, characterized in that: After receiving the first mode setting instruction or receiving the second mode setting instruction, the method further includes: Get the status of each preset DC output module; If there is a preset DC output module in a derated state, the current setting value and the voltage setting value of each preset DC output module are corrected according to the maximum output current and the maximum output voltage of the preset DC output module in the derated state; the derated state is a state in which the rated output power is reduced.
9. A controller, characterized in that: The method comprises a memory and a processor, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method as claimed in any one of claims 5 to 8.
10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method as claimed in any one of claims 5 to 8 are implemented.