A carrier control method, a carrier control device, and a storage medium

Abstract

The embodiment of the application discloses a carrier control method, a carrier control device and a storage medium, and is used for the technical field of carrier control. In the embodiment of the application, the carrier signals of the multiple voltage boosting circuits in the same converter module are staggered with each other in a preset switching period; the carrier signals of the converter modules in the rectifier cabinet are controlled to be staggered with each other based on the target module number and the preset module number of the converter modules in the rectifier cabinet; and the carrier signals of the voltage boosting circuits contained in the rectifier cabinet are staggered with each other in the preset switching period, so that the high-frequency voltage ripple of the converter module can be effectively eliminated, and the normal work of the rectifier cabinet is ensured.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of carrier control, in particular to a carrier control method, a carrier control device and a storage medium. BACKGROUND

[0002] The rectifier cabinet is a commonly used device in the industrial field, mainly used for converting alternating current into direct current for large equipment or power transmission system, wherein the rectifier cabinet includes a plurality of input windings and a plurality of converter modules, the input winding is the output side of the transformer winding, each input winding is connected to a plurality of converter modules, and each converter module includes a plurality of boost circuits.

[0003] At present, when the load connected to the converter module in the rectifier cabinet is light, the converter module is prone to generate high-frequency voltage ripple, resulting in bus overvoltage of the converter module; and through the coupling effect of the transformer winding of the converter module, the high-frequency voltage ripple is conducted to other converter modules, when the load connected to the other converter modules is also light or no load, the energy of the high-frequency voltage ripple is difficult to be consumed, which is prone to cause bus overvoltage of the other converter modules, affecting the normal work of the rectifier cabinet. SUMMARY

[0004] Embodiments of the present application provide a carrier control method, a carrier control device and a storage medium, which can effectively eliminate the high-frequency voltage ripple of the converter module and ensure the normal work of the rectifier cabinet.

[0005] Embodiments of the present application provide a carrier control method applied to a converter module in a rectifier cabinet, the rectifier cabinet includes a plurality of input windings, each input winding is connected to a preset number of converter modules, each converter module includes a plurality of boost circuits, and the method includes:

[0006] Interleaving the carrier signals of the plurality of boost circuits in the same converter module with each other within a preset switching period;

[0007] Based on the target number of converter modules in the rectifier cabinet and the preset number of converter modules, the carrier signals of the converter modules in the rectifier cabinet are controlled to be interleaved with each other.

[0008] Further, the interleaving the carrier signals of the plurality of boost circuits in the same converter module with each other within a preset switching period includes:

[0009] Taking a first boost circuit of the same converter module as a synchronization source;

[0010] The zero-crossing point of the carrier signal of the synchronization source is taken as the starting point of the preset switching period, and the carrier signals of other boost circuits in the converter module are adjusted so that the carrier signals of the multiple boost circuits in the converter module are staggered with each other within the preset switching period.

[0011] Further, the converter module includes four boost circuits, and the adjusting the carrier signals of other boost circuits in the converter module includes:

[0012] When the carrier signal of the first boost circuit crosses zero, the carrier direction of the first boost circuit is controlled to count upwards, the carrier value of the second boost circuit is controlled to be the carrier peak value, and the carrier direction of the second boost circuit is controlled to count downwards, the carrier value of the third boost circuit is controlled to be half of the carrier peak value, and the carrier direction of the third boost circuit is controlled to count downwards, and the carrier value of the fourth boost circuit is controlled to be half of the carrier peak value, and the carrier direction of the fourth boost circuit is controlled to count upwards.

[0013] Further, the controlling the carrier signals of the converter modules in the rectifier cabinet to be staggered with each other based on the target module number of the converter modules in the rectifier cabinet and the preset module number includes:

[0014] a converter module with a preset physical address is taken as a host module, and other converter modules in the rectifier cabinet are taken as slave modules;

[0015] the clock of the host module is aligned with the clock of the slave module at a preset synchronization time, and the carrier value of the host module at the preset synchronization time is converted into a target carrier value of the slave module based on the target module number and the preset module number;

[0016] the carrier value of the slave module at the preset synchronization time is updated to the target carrier value.

[0017] Further, when the preset switching period is 360 degrees, the converting the carrier value of the host module at the preset synchronization time into the target carrier value of the slave module based on the target module number and the preset module number includes:

[0018] the carrier signals of the converter modules in the rectifier cabinet are staggered with each other within 90 degrees based on a carrier conversion formula: TBCTR_NEW = TBCTR + TBPRD*2 / M1 / M2*(MAC-1), where TBCTR_NEW is the target carrier value of the slave module, TBCTR is the carrier value of the host module at the preset synchronization time, TBPRD is the carrier peak value, M1 is the preset module number, M2 is the target module number, and MAC is the physical address of the slave module.

[0019] Further, the updating of the carrier value of the slave module at the preset synchronization time to the target carrier value comprises:

[0020] determining a carrier difference value between the carrier value of the slave module at the preset synchronization time and the target carrier value;

[0021] adjusting a switching frequency of a pulse width modulation signal in the slave module based on the carrier difference value, so that the carrier value of the slave module at the preset synchronization time is the same as the target carrier value.

[0022] Further, the method further comprises:

[0023] mapping a physical address of the converter module to a carrier address of the converter module based on a number of windings of the plurality of input windings, so that the carrier addresses of adjacent converter modules in the rectifier cabinet are separated by the number of windings.

[0024] Embodiments of the present application also provide a carrier control device applied to a converter module in a rectifier cabinet, the rectifier cabinet comprising a plurality of input windings, each of the input windings being connected to a preset number of converter modules, each of the converter modules comprising a plurality of boost circuits, and the device comprising:

[0025] a configuration unit configured to stagger carrier signals of the plurality of boost circuits in the same converter module with each other within a preset switching period;

[0026] a control unit configured to control the carrier signals of the converter modules in the rectifier cabinet to stagger with each other based on a target number of converter modules in the rectifier cabinet and the preset number of converter modules.

[0027] Embodiments of the present application also provide a carrier control device, comprising:

[0028] a central processing unit, a memory, an input and output interface, a wired or wireless network interface, and a power supply;

[0029] the memory is a transitory storage memory or a persistent storage memory;

[0030] the central processing unit is configured to communicate with the memory and execute instruction operations in the memory on a control plane function entity to perform the above method.

[0031] Embodiments of the present application also provide a computer readable storage medium, characterized in that the computer readable storage medium comprises instructions, when the instructions run on a computer, causing the computer to execute the above method.

[0032] As can be seen from the above technical solutions, embodiments of the present application have the following advantages:

[0033] In the embodiment of the present application, the carrier signals of the multiple boost circuits in the same converter module are staggered with each other in a preset switching period; based on the target number of converter modules in the rectifier cabinet and the preset number of modules, the carrier signals of the converter modules in the rectifier cabinet are controlled to be staggered with each other, so that the carrier signals of the boost circuits contained in the rectifier cabinet are staggered with each other in the preset switching period; and the high-frequency voltage ripples generated by the boost circuits contained in the rectifier cabinet are staggered with each other, which can effectively eliminate the high-frequency voltage ripples of the converter modules and ensure the normal operation of the rectifier cabinet. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0035] Figure 1 A flow chart of carrier control disclosed in an embodiment of the present application;

[0036] Figure 2 Another flow chart of carrier control disclosed in an embodiment of the present application;

[0037] Figure 3 A structure diagram of a converter module disclosed in an embodiment of the present application;

[0038] Figure 4 A carrier schematic diagram of four boost circuits in a converter module disclosed in an embodiment of the present application;

[0039] Figure 5 A carrier staggered timing diagram disclosed in an embodiment of the present application;

[0040] Figure 6 A carrier control device diagram disclosed in an embodiment of the present application;

[0041] Figure 7 Another carrier control device diagram disclosed in an embodiment of the present application. DETAILED DESCRIPTION

[0042] In order to make the personnel in the technical field better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0043] 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.

[0044] 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.

[0045] In existing systems, when the load connected to the converter module in the rectifier cabinet is lightly loaded, the converter module is prone to generating high-frequency voltage ripple, leading to bus overvoltage. Furthermore, through the coupling effect of the transformer windings of the converter module, the high-frequency voltage ripple can be propagated to other converter modules. When the loads connected to other converter modules are also lightly loaded or unloaded, the energy of this high-frequency voltage ripple is difficult to dissipate, easily causing bus overvoltage in other converter modules as well, affecting the normal operation of the rectifier cabinet. Therefore, this application provides a carrier control method that can effectively eliminate high-frequency voltage ripple in the converter module, ensuring the normal operation of the rectifier cabinet. Figure 1 As shown, the specific steps are as follows:

[0046] 101. The carrier signals of multiple boost circuits in the same converter module are interleaved within a preset switching period.

[0047] In this embodiment, the carrier control device is applied to the converter module in the rectifier cabinet. The rectifier cabinet includes multiple input windings, which are transformer windings. AC power is input into the rectifier cabinet through the input windings, and the rectifier cabinet is used to convert AC power into DC power. Each input winding is connected to a preset number of converter modules. The converter modules are located inside the rectifier cabinet and are internal modules of the rectifier cabinet. The converter modules are AD / DC converters, including boost converters and buck converters. The preset number of modules can be 3 or 4, and is not limited here. Each converter module includes multiple boost circuits.

[0048] The carrier control device can stagger the carrier signals of the multiple boost circuits in the same transformer module within a preset switching period. The carrier signal is a sawtooth signal. By comparing the carrier signal with a modulation wave, a pulse width modulation signal PWM wave corresponding to the boost circuit can be obtained. The preset switching period is the time interval between the current update and the next update pulse of the PWM wave. Since the update of the preset switching period requires comparison between the modulation wave and the carrier, the preset switching period can also be referred to as the carrier period. The carrier chip can be used to configure the carrier signals of the multiple boost circuits in the same transformer module to be staggered within the preset switching period, i.e., the carrier signals of the multiple boost circuits in each transformer module are staggered within the preset switching period. It can be understood that the multiple boost circuits in the transformer module are driven by the same duty cycle, and the output of the boost circuit is driven by the staggered carrier signals, i.e., the boost circuits in the same transformer module are driven by PWM and are fixedly staggered at a fixed angle.

[0049] It can be understood that the staggering of the carrier signals of the multiple boost circuits in each transformer module is synchronized, i.e., the carrier signals of the multiple boost circuits in each transformer module are the same.

[0050] 102. Based on the target number of transformer modules in the rectifier cabinet and the preset number of modules, the carrier signals of the transformer modules in the rectifier cabinet are controlled to be staggered.

[0051] In the embodiments of the present application, the carrier control device can control the carrier signals of the transformer modules in the rectifier cabinet to be staggered based on the target number of transformer modules in the rectifier cabinet and the preset number of modules. The target number of modules is the number of transformer modules contained in the rectifier cabinet, and the preset number of modules is the number of transformer modules connected to the same input winding.

[0052] Specifically, the multiple transformer modules in the rectifier cabinet can be clocked, i.e., the clocks of the multiple transformer modules are cleared, and then, taking any one of the multiple transformer modules as a reference transformer module, the carrier values in the reference transformer module are converted into carrier values of other transformer modules outside the reference transformer module based on the target number of modules and the preset number of modules, and the carrier values of the other transformer modules are updated, so that the carrier signals of the transformer modules contained in the rectifier cabinet are staggered. Since the carrier signals of the multiple boost circuits in the same transformer module are staggered within the preset switching period, when the carrier signals of the transformer modules contained in the rectifier cabinet are staggered, the carrier signals of the boost circuits contained in the rectifier cabinet can be staggered within the preset switching period. At this time, the transformer modules in the rectifier cabinet are driven at a fixed time by carrier staggering.

[0053] It can be seen that, in the embodiment of the application, the carrier signals of the multiple boost circuits in the same converter module are staggered with each other in the preset switching period; based on the target number of the converter modules in the rectifier cabinet and the preset number of the modules, the carrier signals of the converter modules in the rectifier cabinet are controlled to be staggered with each other, so that the carrier signals of the boost circuits contained in the rectifier cabinet are staggered with each other in the preset switching period; and the high-frequency voltage ripples generated by the boost circuits contained in the rectifier cabinet are staggered with each other, so that the high-frequency voltage ripples of the converter modules can be effectively eliminated, and the normal operation of the rectifier cabinet is ensured.

[0054] Further, the carrier control process will be described in detail as follows: Figure 2 As shown in the figure, the specific steps are as follows:

[0055] 201. Take the first boost circuit of the same converter module as a synchronization source, and adjust the carrier signals of the other boost circuits in the converter module.

[0056] In the embodiment of the application, each converter module includes multiple boost circuits, and the first boost circuit of the same converter module can be taken as a synchronization source, that is, the first boost circuit is taken as a reference boost circuit; the zero-crossing point of the carrier signal of the synchronization source is taken as the starting point of the preset switching period, and the carrier signals of the other boost circuits in the converter module are adjusted, so that the carrier signals of the multiple boost circuits in the converter module are staggered with each other in the preset switching period. In this way, the carrier value of the carrier signal of the other boost circuits in the converter module can be adjusted at the zero-crossing point of the carrier signal of the first boost circuit, and the carrier direction of the carrier signal can be adjusted, so that the carrier signals of the multiple boost circuits in the converter module are staggered with each other in the preset switching period.

[0057] In an implementable manner, the converter module contains four boost circuits (Boost circuits), as shown in the figure. Figure 3 As shown in the figure, the converter module inputs alternating current through the input winding, rectifies through the rectifier bridge, boosts through the four boost circuits, and outputs direct current after being stepped down through the four buck circuits (Buck). The adjustment mode of the carrier signal is as follows: when the carrier signal of the first boost circuit crosses zero (that is, the carrier value is 0), the carrier direction of the first boost circuit is controlled to be upward counting; the carrier value of the second boost circuit is controlled to be the carrier peak value (TBPRD), and the carrier direction of the second boost circuit is controlled to be downward counting; the carrier value of the third boost circuit is controlled to be half of the carrier peak value (TBPRD / 2), and the carrier direction of the third boost circuit is controlled to be downward counting; and the carrier value of the fourth boost circuit is controlled to be half of the carrier peak value (TBPRD / 2), and the carrier direction of the fourth boost circuit is controlled to be upward counting. Taking 40k switching frequency as an example, in one switching period, the carrier signals of the four boost circuits are as shown in the figure. Figure 4As shown, the carrier wave of the next switching cycle repeats the carrier wave of the last switching cycle. In the figure, the horizontal axis represents the switching cycle, and the vertical axis represents the carrier wave value.

[0058] 202. The carrier wave value of the host module at the preset synchronization moment is converted into the target carrier wave value of the slave module based on the target module number and the preset module number.

[0059] In the embodiment of the present application, the control of the interlacing of the carrier wave signals of the converter modules in the rectifier cabinet comprises: taking the converter module with the preset physical address as the host module, and taking the other converter modules in the rectifier cabinet as the slave modules; the converter module with the preset physical address can be the converter module with the physical address 1 in the rectifier cabinet, and each converter module in the rectifier cabinet is connected through the CAN bus and has a corresponding physical address. The clock of the host module and the slave module can be aligned at the preset synchronization moment; the preset synchronization moment can be every preset time length, which can be 100 ms or 150 ms, and the specific value is not limited here. The host module can be controlled to send a synchronization time frame to the slave module at the preset synchronization moment to align the clock of the host module and the slave module, i.e., to clear the clock of the host module and the slave module. The carrier wave value of the host module at the preset synchronization moment is converted into the target carrier wave value of the slave module based on the target module number and the preset module number. Specifically, when the preset switching cycle is 360 degrees, the carrier wave signals of the converter modules in the rectifier cabinet can be interlaced within 90 degrees based on the carrier conversion formula: TBCTR NEW = TBCTR + TBPRD * 2 / M1 / M2*(MAC-1), where TBCTR NEW is the target carrier wave value of the slave module, TBCTR is the carrier wave value of the host module at the preset synchronization moment, TBPRD is the carrier peak value, M1 is the preset module number, M2 is the target module number, and MAC is the physical address of the slave module at the preset synchronization moment. The carrier signal is a sawtooth wave, and TBPRD*2 indicates that the downward part of the carrier signal is flipped up to convert the sawtooth wave into a waveform with an upward slope. When the target carrier wave value of the slave module after conversion is greater than TBPRD*2, TBPRD*2 is subtracted, i.e., the remainder is taken, and at this time, the carrier wave signals of the converter modules in the rectifier cabinet can be maximally interlaced within 90 degrees.

[0060] In an implementable manner, when the rectifier cabinet contains six input windings, each input winding is connected to four converter modules, and each converter module contains four boost circuits, i.e., the rectifier cabinet contains twenty-four converter modules and ninety-six boost circuits, the corresponding carrier interlacing timing sequence is as follows: Figure 5The host module sends a frame of synchronization time to the slave module at t1 (preset synchronization time); at t2, the host module detects that the synchronization time frame is sent successfully, triggers a CAN bus sending interrupt signal, and records the carrier value (TBCTR value) at the time when the synchronization time frame is sent successfully; and at t2, the slave module detects that the synchronization time frame is received successfully, triggers a CAN receiving interrupt signal, and records the TBCTR value at the time when the synchronization time frame is received successfully. It can be understood that the response time can be reduced at the clock alignment through the interrupt signal, and the delay is avoided, that is, zero delay at t1 and t2, and the TBCTR value at t1 is recorded. At t3, the host module sends a synchronization data frame to the slave module, and the delay between t2 and t3 is 1 ms; at t4, when the slave module detects that the synchronization data frame is received successfully, the TBCTR NEW is calculated according to the carrier value of the host module and the physical address of the slave module, that is, TBCTR NEW = TBCTR + PRD * 2 / 4 / 24*(physical address of the slave module-1).

[0061] 203. Update the carrier value of the slave module at the preset synchronization time to the target carrier value.

[0062] After the carrier value of the host module at the preset synchronization time is calculated as the target carrier value of the slave module, the carrier value of the slave module at the preset synchronization time can be updated to the target carrier value. Specifically, the carrier difference value between the carrier value of the slave module at the preset synchronization time and the target carrier value can be determined; and the switching frequency of the pulse width modulation signal in the slave module is adjusted based on the carrier difference value, so that the carrier value of the slave module at the preset synchronization time is the same as the target carrier value.

[0063] In an implementable manner, when the switching period is 360 degrees, the rectifier cabinet includes six input windings, each input winding is connected to four converter modules, and each converter module includes four boost circuits, after the carrier value of the slave module at the preset synchronization time is updated to the target carrier value, the carrier signals of the first boost circuits of the twenty-four converter modules can be evenly divided within 0-90 degrees, and the carrier signals of the four boost circuits in each converter module are synchronized and staggered, so that the carrier signals of the ninety-six boost circuits are evenly divided and staggered within 360 degrees.

[0064] 204. Map the physical address of the converter module to the carrier address of the converter module based on the number of windings of the plurality of input windings, so that the carrier addresses of adjacent converter modules in the rectifier cabinet are separated by the number of windings.

[0065] In the embodiments of the present application, the physical address of the converter module can be mapped to the carrier address of the converter module based on the number of windings of the plurality of input windings, so that the carrier addresses of adjacent converter modules in the rectifier cabinet are separated by the number of windings. It can be understood that, in the initial state, the carrier address of the converter module is the physical address of the converter module, and the physical addresses of the converter modules are sequentially ordered from small to large according to the positions in the rectifier cabinet, i.e., the carrier addresses of the converter modules are sequentially ordered from small to large. By mapping the physical address of the converter module to the carrier address of the converter module, the carrier signals of the converter modules connected to the same input winding can be evenly staggered in the preset switching period. That is, the carrier signals of the converter modules connected to the same input winding can be staggered at intervals of a preset period, wherein the preset period is the preset switching period divided by the preset number of modules. For example, when the preset switching period is 360 degrees and the preset number of modules is 4, the period interval is 90 degrees, i.e., the carrier signals of the converter modules connected to the same output winding are staggered at intervals of 90 degrees.

[0066] Specifically, the carrier address of the converter module can be updated based on the mapping formula: carrier address of converter module = number of windings * (physical address of converter module - 1) + 1. In an implementable manner, when the switching period is 360 degrees, the rectifier cabinet includes six input windings, each input winding is connected to four converter modules, and each converter module includes four boost circuits, the physical addresses of the converter modules are sequentially ordered from 1 to 24, i.e., the physical addresses of the converter modules connected to the first input winding (winding 1) are 1-4. At this time, the physical address of the converter module is the carrier address of the converter module. In order to evenly stagger the converter modules in the same input winding in the preset switching period, i.e., each converter module is staggered at intervals of 90 degrees, the physical address and the carrier address of the converter module can be mapped, and the mapping formula can be: group number = (physical address of converter module - 1) / 4 + 1 (integer); carrier address of converter module = number of windings * ((physical address of converter module + 3) - group number * 4) + group number. The carrier address of the converter module can be updated to 1, 7, 13, 19, 25,..., i.e., separated by the number of windings 6, so that the converter modules in the same input winding are staggered at intervals of 90 degrees.

[0067] It can be seen that, in the embodiment of the present application, the physical address of the converter module is mapped to the carrier address of the converter module based on the number of input windings, so that the carrier addresses of adjacent converter modules in the rectifier cabinet are separated by the number of windings, and the carrier signals of the converter modules connected to the same input winding are evenly staggered in the preset switching period. Further, the high-frequency voltage ripples generated by the boost circuits included in the rectifier cabinet are staggered, effectively eliminating the high-frequency voltage ripples of the converter modules and ensuring the normal operation of the rectifier cabinet.

[0068] The present application also provides a carrier control device applied to a converter module in a rectifier cabinet, wherein the rectifier cabinet includes a plurality of input windings, each of which is connected to a preset number of converter modules, and each of the converter modules includes a plurality of boost circuits. Figure 6

[0069] The configuration unit 601 is configured to stagger the carrier signals of the plurality of boost circuits in the same converter module in a preset switching period.

[0070] The control unit 602 is configured to control the carrier signals of the converter modules in the rectifier cabinet to be staggered based on the target number of converter modules in the rectifier cabinet and the preset number of modules.

[0071] The present application also provides a carrier control device 700, as shown in Figure 7 The carrier control device 700 of the present application can include one or more central processing units (CPUs) 701 and a memory 702 in which one or more application programs or data are stored.

[0072] The memory 702 can be volatile or persistent storage. The programs stored in the memory 702 can include one or more modules, each of which can include a series of instruction operations in the electronic device. Further, the central processing unit 701 can be configured to communicate with the memory 702 and execute the series of instruction operations in the memory 702 on the carrier control device 700.

[0073] The carrier control device 700 can also include one or more power supplies 705, one or more wired or wireless network interfaces 704, one or more input / output interfaces 703, and / or one or more operating systems, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, etc.

[0074] ​The central processor 701 can perform the operations performed by the first aspect or any of the specific method embodiments of the first aspect, and details are not repeated.

[0075] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, and details are not repeated here.

[0076] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the above-described device embodiments are only schematic, and for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0077] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, i.e., they can be located in one place or distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0078] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The above integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0079] The integrated unit, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, read-only memory), a random access memory (RAM, random access memory), a magnetic disk or an optical disk, and various program code storage media.

Claims

1. A carrier control method applied to a converter module in a rectifier cabinet, the rectifier cabinet comprising a plurality of input windings, each of the input windings being connected to a preset number of converter modules, each of the converter modules comprising a plurality of boost circuits, characterized in that, The method comprises: Interleaving the carrier signals of the multiple voltage-boosting circuits in the same converter module within a preset switching period; Controlling the carrier signals of the converter modules in the rectifier cabinet to be interleaved based on the target number of modules of the converter modules in the rectifier cabinet and the preset number of modules; The control of the carrier signals of the converter modules in the rectifier cabinet based on the target number of modules of the converter modules in the rectifier cabinet and the preset number of modules comprises: Taking a converter module with a preset physical address as a master module and taking other converter modules in the rectifier cabinet as slave modules; Aligning the clocks of the master module and the slave modules at a preset synchronization time; converting the carrier value of the master module at the preset synchronization time into a target carrier value of the slave modules based on the target number of modules and the preset number of modules; Updating the carrier value of the slave modules at the preset synchronization time to the target carrier value.

2. The carrier control method according to claim 1, wherein The interleaving of the carrier signals of the multiple voltage-boosting circuits in the same converter module within a preset switching period comprises: Taking a first voltage-boosting circuit of the same converter module as a synchronization source; Taking the zero-crossing point of the carrier signal of the synchronization source as the starting point of the preset switching period, and adjusting the carrier signals of the other voltage-boosting circuits in the converter module so that the carrier signals of the multiple voltage-boosting circuits in the converter module are interleaved within the preset switching period.

3. The carrier control method according to claim 2, wherein The converter module comprises four voltage-boosting circuits, and the adjustment of the carrier signals of the other voltage-boosting circuits in the converter module comprises: When the carrier signal of the first voltage-boosting circuit crosses zero, the carrier direction of the first voltage-boosting circuit is controlled to count upwards; the carrier value of a second voltage-boosting circuit is controlled to be a carrier peak value, and the carrier direction of the second voltage-boosting circuit is controlled to count downwards; the carrier value of a third voltage-boosting circuit is controlled to be half of the carrier peak value, and the carrier direction of the third voltage-boosting circuit is controlled to count downwards; and the carrier value of a fourth voltage-boosting circuit is controlled to be half of the carrier peak value, and the carrier direction of the fourth voltage-boosting circuit is controlled to count upwards.

4. The carrier control method according to claim 3, wherein When the preset switching period is 360 degrees, the conversion of the carrier value of the master module at the preset synchronization time into the target carrier value of the slave modules based on the target number of modules and the preset number of modules comprises: Interleaving the carrier signals of the converter modules in the rectifier cabinet within 90 degrees based on a carrier conversion formula: TBCTR_NEW=TBCTR+TBPRD*2 / M1 / M2*(MAC-1); wherein TBCTR_NEW is the target carrier value of the slave modules, TBCTR is the carrier value of the master module at the preset synchronization time, TBPRD is a carrier peak value, M1 is the preset number of modules, M2 is the target number of modules, and MAC is the physical address of the slave modules.

5. The carrier control method according to claim 3, wherein The updating of the carrier value of the slave modules at the preset synchronization time to the target carrier value comprises: Determining the carrier difference between the carrier value of the slave modules at the preset synchronization time and the target carrier value; Adjust a switching frequency of a pulse width modulation signal in the slave module based on the carrier difference, so that the slave module has the same carrier value as the target carrier value at the preset synchronization time.

6. The carrier control method according to claim 1, wherein The method further comprises: Mapping a physical address of the converter module to a carrier address of the converter module based on a winding number of the multiple input windings, so that carrier addresses of adjacent converter modules in the rectifier cabinet are separated by the winding number.

7. A carrier control device applied to a converter module in a rectifier cabinet, the rectifier cabinet comprising a plurality of input windings, each of the input windings being connected to a preset number of converter modules, each of the converter modules comprising a plurality of boost circuits, characterized in that, The apparatus comprises: A configuration unit configured to stagger carrier signals of multiple boost circuits in the same converter module with each other within a preset switching period; A control unit configured to control the carrier signals of the converter modules in the rectifier cabinet to be staggered with each other based on a target module number of the converter modules in the rectifier cabinet and the preset module number; The control unit is specifically configured to take a converter module with a preset physical address as a master module, take other converter modules in the rectifier cabinet as slave modules, align clocks of the master module and the slave modules at a preset synchronization time, convert a carrier value of the master module at the preset synchronization time into a target carrier value of the slave modules based on the target module number and the preset module number, and update a carrier value of the slave modules at the preset synchronization time to the target carrier value.

8. A carrier control device, characterized by comprising: The apparatus comprises: A central processing unit, a memory, an input / output interface, a wired or wireless network interface, and a power supply; The memory is a transitory storage memory or a persistent storage memory; The central processing unit is configured to communicate with the memory, execute instruction operations in the memory on a control plane function entity, and perform the method in any one of claims 1 to 6.

9. 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 perform the method in any one of claims 1 to 6.

Images