Method, device and equipment for controlling multiple thyristor power regulators and medium

Abstract

The invention discloses a control method, device and equipment for multiple thyristor power regulators and a medium, and the control method comprises the steps: controlling the multiple thyristor power regulators through a first control strategy when the required power of a target power supply meets a first condition; the first control strategy is phase shift control; when the required power of the target power supply meets a second condition, controlling the plurality of thyristor power regulators according to a second control strategy; the second control strategy is cyclic wave control; when the required power of the target power supply meets a third condition, controlling the plurality of thyristor power regulators according to a third control strategy; and the third control strategy comprises the steps of firstly carrying out cyclic wave control and carrying out phase shift control after the cyclic wave control is finished. According to the invention, through combination of methods of phase shifting, cyclic wave control and the like, the electric energy quality problems of high higher harmonic, low power factor, large power impact and the like generated when a plurality of thyristor power regulators work cooperatively are eliminated to a great extent.

Description

Technical Field

[0001] The present application relates to the field of testing technology, and in particular to a control method, device, equipment and medium for multiple thyristor power regulators. Background Art

[0002] Thyristor power regulator: Generally used in single-phase or three-phase power circuits. Each phase is composed of positive and negative parallel thyristors. By controlling the triggering of the thyristors, the output voltage of the thyristor power regulator can be controlled, thereby achieving the purpose of adjusting the load voltage and power on the thyristor power regulator.

[0003] During the operation of the existing three-phase thyristor power regulator, if it is not running at full power, there will be more serious power quality problems. Thyristor power supply power regulation can be divided into two working modes: phase shift control mode and frequency control mode. In the phase shift control mode, the power regulator will have harmonic problems and power factor problems. In the frequency control mode, the power regulator will have active power impact problems. Generally, when multiple thyristor power supplies work together, the total power becomes larger and the power quality problems are superimposed on each other, which will have a more serious impact on the power grid. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present application provides a control method, device, equipment and medium for multiple thyristor power regulators, which are used to solve at least one defect in the prior art.

[0005] To achieve the above-mentioned purpose and other purposes, the present application provides a control method for multiple thyristor power regulators, which is used to control multiple thyristor power regulators of target power supplies in multiple power supply groups in a time-sharing manner, wherein the target power supply is one of the multiple power supply groups; the control method comprises: Obtain the required power of the target power supply; When the required power of the target power source meets the first condition, the plurality of thyristor power regulators are controlled by a first control strategy; the first control strategy is phase shift control; When the required power of the target power source meets the second condition, the plurality of thyristor power regulators are controlled by a second control strategy; the second control strategy is frequency control; When the required power of the target power source meets the third condition, the plurality of thyristor power regulators are controlled by a third control strategy; the third control strategy is to first perform frequency control and then perform phase shift control after the frequency control ends; Among them, when the first control strategy is used to control multiple thyristor power regulators, there is no overlapping interval and gap interval between the operating times of two adjacent thyristor power regulators; when the second control strategy and the third control strategy are used to control multiple thyristor power regulators, there is an overlapping interval between the operating times of two adjacent thyristor power regulators.

[0006] In one embodiment of the present invention, the first condition includes: Target power supply required power P <p 0 / N, N represents the number of thyristors in each group of power supplies, p 0 Indicates the power of each of the multiple power supply groups.

[0007] In one embodiment of the present invention, the first control strategy includes: In the cycle T, in the kth time period t, the kth thyristor power regulator is (N*P / p 0 ) 100% proportional phase shift operation, T=N*t, k=1,2,...,N.

[0008] In one embodiment of the present invention, the second condition includes: The target power source's required power P = p 0 *L / N, L=1,2,...,N, N represents the number of thyristors in each group of power supplies, p 0 Indicates the power of each of the multiple power supply groups.

[0009] In one embodiment of the present invention, the second control strategy includes: In the period T, the kth thyristor power regulator starts full output operation from the kth time period t, and the full output operation time is k+L time periods t, T=N*t, k=1,2,...,N.

[0010] In one embodiment of the present invention, the third condition includes: The target power source's required power P is 0 *L / N and p 0 * (L+1) / N, L=1,2,...,N-1; N represents the number of thyristors in each group of power supplies, p 0 Indicates the power of each of the multiple power supply groups.

[0011] In one embodiment of the present invention, the third control strategy includes: In the cycle T, the kth thyristor power regulator starts full output operation from the kth time period t, and the full output operation time is k+L time periods t; after the full output operation is completed, in the k+L+1th time period t, according to ((N*PL*p 0 ) / p 0)*100% proportional phase shift operation, T=N*t, k=1,2,...,N.

[0012] To achieve the above-mentioned purpose and other related purposes, the present application provides a control device for multiple thyristor power regulators, which is used to control multiple thyristor power regulators of target power supplies in multiple power supply groups in a time-sharing manner, wherein the target power supply is one of the multiple power supply groups; the control device comprises: A power acquisition module, used to acquire the required power of a target power source; A first control module, configured to control the plurality of thyristor power regulators using a first control strategy when the required power of the target power source meets a first condition; the first control strategy is phase shift control; A second control module, configured to control the plurality of thyristor power regulators using a second control strategy when the required power of the target power source meets a second condition; the second control strategy is frequency control; A third control module is used to control the plurality of thyristor power regulators with a third control strategy when the required power of the target power source meets a third condition; the third control strategy is to first perform frequency control and then perform phase shift control after the frequency control ends; Among them, when the first control strategy is used to control multiple thyristor power regulators, there is no time gap between the operations of two adjacent thyristor power regulators, and there is no overlapping interval in the operation time; when the second control strategy and the third control strategy are used to control multiple thyristor power regulators, there is an overlapping interval in the operation time of two adjacent thyristor power regulators.

[0013] To achieve the above-mentioned purpose and other related purposes, the present application provides a control device for multiple thyristor power regulators, including: One or more processors and a memory, the memory is used to store one or more programs, when the one or more programs are executed by the one or more processors, the memory implements the control method of multiple thyristor power regulators.

[0014] To achieve the above objectives and other related objectives, the present application provides one or more machine-readable media on which instructions are stored, which, when executed by one or more processors, enable the processors to execute the control method of multiple thyristor power regulators.

[0015] Beneficial effects of this application: A control method for multiple thyristor power regulators of the present application includes: obtaining the required power of a target power source; when the required power of the target power source meets a first condition, controlling the multiple thyristor power regulators with a first control strategy; the first control strategy is phase shift control; when the required power of the target power source meets a second condition, controlling the multiple thyristor power regulators with a second control strategy; the second control strategy is cycle control; when the required power of the target power source meets a third condition, controlling the multiple thyristor power regulators with a third control strategy; the third control strategy is to first perform cycle control and then perform phase shift control after the cycle control ends; wherein, when the multiple thyristor power regulators are controlled with the first control strategy, there is no overlapping interval and gap interval between the operating times of two adjacent thyristor power regulators; when the multiple thyristor power regulators are controlled with the second control strategy and the third control strategy, there is an overlapping interval between the operating times of two adjacent thyristor power regulators. The present invention combines phase shifting and frequency control methods to largely eliminate power quality problems such as high high-order harmonics, low power factor, and large power impact generated when multiple thyristor power regulators work together.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the drawings: Figure 1 A structural diagram of a thyristor power regulator according to an embodiment of the present application; Figure 2 A structural diagram of a thyristor power regulator according to another embodiment of the present application; Figure 3 A schematic diagram of a thyristor power regulator controlled by a phase-shift mode according to an embodiment of the present application; Figure 4 For an embodiment of the present application, the following is adopted Figure 3 Schematic diagram of the output waveform of the thyristor power regulator power supply controlled by the phase shift mode; Figure 5 A schematic diagram of a thyristor power regulator controlled by a zero-crossing mode according to an embodiment of the present application; Figure 6 A schematic diagram of controlling multiple thyristor power regulators by adopting a zero-crossing online power distribution method according to an embodiment of the present application; Figure 7A schematic diagram of a control method for multiple thyristor power regulators according to an embodiment of the present application; Figure 8 A schematic diagram of controlling multiple thyristor power regulators using a first strategy according to an embodiment of the present application; Fig. 9 A schematic diagram of controlling multiple thyristor power regulators using a second strategy according to an embodiment of the present application; Fig.10 A schematic diagram of controlling multiple thyristor power regulators using a third strategy according to an embodiment of the present application; Fig.11 A schematic diagram of controlling multiple thyristor power regulators according to an embodiment of the present application; Fig.12 A schematic diagram of the structure of a computer system suitable for implementing the memory of an embodiment of the present application is shown. DETAILED DESCRIPTION

[0018] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0019] It should be noted that the illustrations provided in the following embodiments are only used to illustrate the basic concept of the present application in a schematic manner, and therefore the illustrations only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the form, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0020] Although the terms "first", "second", "A", and "B", etc. may be used herein to describe various elements, these elements should not be limited by these terms and are only used to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the following technology. The term "and / or" includes a combination of multiple related items or any of the multiple related items.

[0021] As used herein, unless the context indicates otherwise, the singular form is intended to include the plural form, and it will be understood that the term "comprising" means the presence of stated features, quantities, steps, operations, elements, or combinations thereof, but does not exclude the presence or addition of one or more other features, quantities, steps, operations, elements, components, or combinations thereof.

[0022] Before the detailed description, it is intended to clarify that the division of components in this specification is divided only by the main function of each component. That is, two or more components to be described below can be combined into one component, or can be divided into two or more components according to more detailed functions. In addition to the main function of the component, each component to be described below can also perform some or all of the functions of other components, and some of the main functions of each component can be exclusively performed by other components.

[0023] With the rapid implementation of the national policy of "electrification of terminal energy consumption", the use of electric boilers, electric kilns, industrial induction heating and other technologies in the field of industrial production has gradually expanded. Most of these electric heating devices use thyristor power regulators to achieve power regulation, thereby achieving heating temperature and process control. Thyristor power regulators have the advantages of fast response speed, wide power regulation range, reliable operation and low cost. However, in most of the power regulation range, excessive harmonic content, low power factor, large power impact and other power quality problems limit its application.

[0024] Thyristor power regulators are generally used in single-phase or three-phase power circuits. Each phase is composed of positive and negative parallel thyristors. By controlling the triggering of the thyristors, the output voltage of the thyristor power regulator can be controlled, thereby achieving the purpose of adjusting the load voltage and power on the thyristor power regulator. The structure of the thyristor power regulator is as follows: Figure 1 , 2 As shown, the load power is changed by controlling the conduction of thyristors V1~V6.

[0025] In high-power application scenarios, there are often multiple heaters with the same rated power that form a furnace group and operate simultaneously. How to maximize the improvement of the power quality problems generated during their operation is of great significance.

[0026] There are two common control schemes for controlling multiple thyristor power regulators: phase shift control and frequency control.

[0027] (1) Phase shift mode like Figure 3 As shown in the figure, the output voltage is changed by changing the conduction angle of the thyristor in each sine wave to adjust the power. Figure 4 It can be seen that the equipment operating in this mode has serious high-order harmonic problems, especially the 5th and 7th harmonics account for a large proportion. In the field of large-scale electric heating with multiple applications, if the power control method of phase shift control is adopted, the high-order harmonics will be linearly superimposed, the harmonic problem will be amplified, and serious power quality problems will occur.

[0028] (2) Zero-crossing mode like Figure 5As shown in the figure, by conducting a certain number of sine waves in a certain period, the output power is adjusted by the proportion of the conducted sine waves. In this scheme, since each phase thyristor is turned on at the natural commutation point, the current waveform in each cycle is either a complete sine wave or zero current. However, this causes an impact on the active power of the power grid. In general low-power applications, the power quality problem is not obvious, but in high-power applications where multiple units are running at the same time, it will cause power quality problems such as voltage fluctuations and flicker.

[0029] (3) Zero-crossing power allocation like Figure 6 As shown in the figure, when multiple thyristor power regulators are working in zero-crossing mode, the impact on the power grid can be reduced by reasonably allocating the time for each power supply to conduct the sine wave. This scheme is a commonly used scheme in the current multi-machine allocation algorithm. It controls the power quality of the main line of the thyristor power regulator by controlling the start-up time and duty cycle of multiple heaters. However, except for very few special cases, the main line still has a relatively serious active power impact problem. Taking N heaters with a power of P working at the same time as an example, the active power impact problem can be eliminated only when the total power of the heaters is nP (1≤n≤N).

[0030] It can be seen that when multiple thyristor power regulators use phase-shift mode, the harmonics are large and the power factor problem is serious; when multiple thyristor power regulators use frequency control mode, the power impact problem is serious, which will cause power quality problems such as fluctuation and flicker; when the zero-crossing online power distribution mode is adopted, the impact problem is only alleviated at some power points, and the impact still exists in most power ranges, which cannot be used in fields with high requirements for power quality.

[0031] Based on the above-mentioned problems existing in controlling multiple thyristor power regulators, the embodiments of the present application respectively propose a control method for multiple thyristor power regulators, a control device for multiple thyristor power regulators, a control equipment for multiple thyristor power regulators, and a computer-readable storage medium. These embodiments will be described in detail below.

[0032] Figure 7 Schematic diagram of a control method for multiple thyristor power regulators of an embodiment of the present application. The present application provides a control method for multiple thyristor power regulators, which is used to control multiple thyristor power regulators of a target power supply in multiple power supply groups in a time-sharing manner, wherein the target power supply is one of the multiple power supply groups. Figure 7 The control methods include: Step S710, obtaining the required power of the target power source; Step S720, when the required power of the target power source meets the first condition, the plurality of thyristor power regulators are controlled by a first control strategy; the first control strategy is phase shift control; Step S730, when the required power of the target power source meets the second condition, the plurality of thyristor power regulators are controlled by a second control strategy; the second control strategy is frequency control; Step S740, when the required power of the target power source meets the third condition, the plurality of thyristor power regulators are controlled by a third control strategy; the third control strategy is to first perform frequency control and then perform phase shift control after the frequency control is completed; Among them, when the first control strategy is used to control multiple thyristor power regulators, there is no time gap between the operations of two adjacent thyristor power regulators, and there is no overlapping interval in the operation time; when the second control strategy and the third control strategy are used to control multiple thyristor power regulators, there is an overlapping interval in the operation time of two adjacent thyristor power regulators.

[0033] The present invention combines phase shifting and frequency control methods to largely eliminate power quality problems such as high high-order harmonics, low power factor, and large power impact generated when multiple thyristor power regulators work together.

[0034] To further explain the embodiments of the present application in detail, in one embodiment, the entire power supply system includes M (M≥1) power supply groups, each power supply group includes N (N≥2) thyristor power regulators, wherein the power of each power supply group is p 0 , that is, the rated power of a thyristor power regulator is p 0 / N. When N thyristor power regulators are running together, the control strategy of multiple thyristor power regulators is as follows: In one embodiment, the first condition includes: the required power P of the target power source <p 0 / N, N represents the number of thyristors in each group of power supplies, p 0 Indicates the power of each of the multiple power supply groups.

[0035] The first control strategy includes: within the period T, within the kth time period t, the kth thyristor power regulator is set according to (N*P / p 0 )*100% proportional phase shift operation, T=N*t, k=1,2,...,N.

[0036] It should be noted that when the first control strategy is used to control multiple thyristor power regulators, there is no time gap between the operations of two adjacent thyristor power regulators, and there is no overlapping interval in the operation time. There is no time gap between the operations of two adjacent thyristor power regulators, and there is no overlapping interval in the operation time means that after the operation of the first thyristor power regulator ends, the second thyristor power regulator starts to operate immediately, that is, the end time point of the operation of the first thyristor power regulator is the start time point of the operation of the second thyristor power regulator.

[0037] Divide the period T into N time periods, that is, period T = N*t. When the required power P of the target power source in the group <p 0 / N, the kth thyristor power regulator operates in the kth time period t, and does not operate in the rest of the time. The kth thyristor power regulator is operated according to (N*P / p 0 ) proportional phase shift operation (k=1,2,...,N). Figure 8 As shown, according to the main line waveform, it can be seen that the main line waveform connected to the power grid has good uniformity, without power impact and power gap problems. At any time, only one power regulator is generating harmonics. In this case, there is usually no need for harmonic control or the use of a small-capacity filter to filter out harmonics.

[0038] This application optimizes the operating status of each power regulator while meeting the total required power P through time division and power regulation, and is suitable for efficient control in low-load scenarios.

[0039] In one embodiment, the second condition includes: the required power P of the target power source = p 0 *L / N, L=1,2,...,N, N represents the number of thyristors in each group of power supplies, p 0 Indicates the power of each of the multiple power supply groups.

[0040] The second control strategy includes: within the period T, the kth thyristor power regulator starts full output operation from the kth time period t, and the full output operation time is k+L time periods t, T=N*t, k=1,2,...,N.

[0041] It should be noted that when the second control strategy is used to control multiple thyristor power regulators, there is an overlapping interval between the operation times of two adjacent thyristor power regulators. The overlapping interval between the operation times of two adjacent thyristor power regulators means that the second thyristor power regulator starts to operate before the operation of the first thyristor power regulator ends. That is, the start time point of the operation of the second thyristor power regulator is earlier than the end time point of the operation of the first thyristor power regulator. When the target power demand power P in the group = p 0 *L / N (L=1,2,...,N), in the period T=N*t, the kth thyristor power regulator starts full output operation from the kth time period t, and the full output operation time is k+L time periods. Fig. 9 As shown, according to the main line waveform, it can be seen that the main line waveform connected to the power grid has good uniformity and basically has no power quality problems.

[0042] This application uses a segmented full-power output strategy to distribute the total required power to N power regulators, and each power regulator runs at full power for L+1 time periods within a specified time period. This strategy ensures accurate power distribution and load balancing through cyclic timing control, while meeting system efficiency and equipment life requirements.

[0043] In one embodiment, the third condition includes: the required power P of the target power source is within p 0 *L / N and p 0 * (L+1) / N, L=1,2,...,N-1; N represents the number of thyristors in each group of power supplies, p 0 Indicates the power of each of the multiple power supply groups.

[0044] The third control strategy includes: within the period T, the kth thyristor power regulator starts full output operation from the kth time period t, and the full output operation time is k+L time periods t; after the full output operation is completed, in the k+L+1th time period t, according to ((N*PL*p 0 ) / p 0 )*100% proportional phase shift operation, T=N*t, k=1,2,...,N.

[0045] It should be noted that when the third control strategy is used to control multiple thyristor power regulators, there is an overlapping interval between the operation times of two adjacent thyristor power regulators. The overlapping interval between the operation times of two adjacent thyristor power regulators means that when the operation of the first thyristor power regulator has not yet ended, the second thyristor power regulator starts to operate. That is, the start time point of the operation of the second thyristor power regulator is earlier than the end time point of the operation of the first thyristor power regulator.

[0046] When the required power P, p of the target power source in the group 0 *L / N <P<p 0 *(L+1) / N (L=1,2,...,N-1), in the period T=N*t, the kth thyristor power regulator starts full output operation from the kth time t, and the full output operation time is k+L time periods; after the full output operation is completed, in the k+L+1th time period t, according to ((N*PL*p 0 ) / p 0 )*100% proportional phase shift operation. The remaining time period is turned off and no power is output. If the time period index exceeds N, it will cycle to the beginning of the cycle. For example, when k+L>N, it will cover the end of the cycle and continue from the beginning. Fig.10As shown, according to the main line waveform, it can be seen that the main line waveform connected to the power grid has good uniformity, without power impact and power gap problems. At any time, only one power regulator is generating harmonics. In this case, there is usually no need for harmonic control or the use of a small-capacity filter to filter out harmonics.

[0047] In one embodiment, if the power system 1 provides M power groups, the operating power ratio of the M-1 power group is P'= p 0 *i / N (i=0,1,2,...,N), only one power supply is running, power ratio P≠p 0 *i / N. For example, M=5, N=4, the operation distribution is shown in the table:

[0048] It can be seen that at this time, the total power of all power supplies is also steplessly adjustable, the entire operation is impact-free, and the harmonic component is minimal.

[0049] In summary, the present invention, by combining phase shifting and frequency control methods, largely eliminates the power quality problems such as high high-order harmonics, low power factor, and large power impact generated when multiple thyristor power regulators work together.

[0050] It should be noted that in Figure 3 , Figure 5 , Figure 6 , Figure 8 , Fig. 9 , Fig.10 In the figure, the horizontal axis represents time or period, and the vertical axis represents current.

[0051] It should be understood that the size of the serial numbers of the steps in the above embodiments does not 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 embodiments of the present application.

[0052] Fig.11 1 is a block diagram of a control device for multiple thyristor power regulators shown in an embodiment of the present application. A control device for multiple thyristor power regulators is used to perform time-sharing and turn-controlled multiple thyristor power regulators of a target power source in multiple power sources, where the target power source is one of the multiple power sources. Fig.11 As shown, a control device for multiple thyristor power regulators, the control device comprising: A power acquisition module, used to acquire the required power of a target power source; A first control module, used for controlling the plurality of thyristor power regulators with a first control strategy when the required power of the target power source meets a first condition; the first control strategy is phase shift control; A second control module is used to control the plurality of thyristor power regulators with a second control strategy when the required power of the target power source meets a second condition; the second control strategy is frequency control; A third control module is used to control the multiple thyristor power regulators with a third control strategy when the required power of the target power source meets the third condition; the third control strategy is to first perform frequency control and then perform phase shift control after the frequency control ends; Among them, when the first control strategy is used to control multiple thyristor power regulators, there is no time gap between the operations of two adjacent thyristor power regulators, and there is no overlapping interval in the operation time; when the second control strategy and the third control strategy are used to control multiple thyristor power regulators, there is an overlapping interval in the operation time of two adjacent thyristor power regulators.

[0053] It should be noted that the control device for multiple thyristor power regulators provided in the above embodiment and the control method for multiple thyristor power regulators provided in the above embodiment belong to the same concept, wherein the specific manner in which each module and unit performs the operation has been described in detail in the method embodiment, and will not be repeated here. In practical applications, the control device for multiple thyristor power regulators provided in the above embodiment can allocate the above functions to different functional modules as needed, that is, divide the internal structure of the device into different functional modules to complete all or part of the functions described above, and this is not limited here.

[0054] An embodiment of the present application further provides a device, comprising: One or more processors and a memory, the memory is used to store one or more programs, when the one or more programs are executed by one or more processors, the memory implements the control method of multiple thyristor power regulators in the above embodiment.

[0055] The embodiments of the present application further provide one or more machine-readable media on which instructions are stored, and when executed by one or more processors, the processors execute the control method for multiple thyristor power regulators in the above embodiments.

[0056] Fig.12 FIG. 1 is a schematic diagram showing a computer system structure suitable for implementing a memory in an embodiment of the present invention. It should be noted that: Fig.12 The computer system of the memory shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0057] like Fig.12As shown, the computer system 1200 includes a central processing unit (CPU) 1201, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 1202 or the program loaded from the storage part to the random access memory (RAM) 1203, such as executing the method in the above embodiment. Various programs and data required for system operation are also stored in the RAM. The CPU 1201, ROM 1202 and RAM 1203 are connected to each other through a bus 1204. The input / output (I / O) interface 1205 is also connected to the bus 1204.

[0058] The following components are connected to the I / O interface 1205: an input section 1206 including a keyboard, a mouse, etc.; an output section 1207 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 1208 including a hard disk, etc.; and a communication section 1209 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 1209 performs communication processing via a network such as the Internet. A drive 1210 is also connected to the I / O interface 1205 as needed. A removable medium 1211, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 1210 as needed so that a computer program read therefrom is installed into the storage section 1208 as needed.

[0059] In particular, according to an embodiment of the present invention, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present invention includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains a computer program for executing the control method of multiple thyristor power regulators implemented in the above embodiment. In such an embodiment, the computer program can be downloaded and installed from the network through the communication part, and / or installed from the removable medium 1211. When the computer program is executed by the central processing unit (CPU) 1201, various functions defined in the system of the present invention are executed.

[0060] It should be noted that the computer-readable medium shown in the embodiment of the present invention may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM) 1203, a read-only memory (ROM) 1202, an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present invention, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable computer program. This propagated data signal may take a variety of forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. A computer program contained on a computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0061] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present invention. Among them, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart, can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0062] The units involved in the embodiments of the present invention may be implemented by software or hardware, and the units described may also be arranged in a processor. The names of these units do not, in some cases, limit the units themselves.

[0063] Another aspect of the present invention further provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor of a computer, the computer executes the control method of multiple thyristor power regulators as described above. The computer-readable storage medium may be included in the memory described in the above embodiment, or may exist independently without being assembled into the memory.

[0064] Another aspect of the present invention further provides a computer program product or a computer program, the computer program product or the computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the control method of multiple thyristor power regulators provided in the above-mentioned embodiments.

[0065] The above embodiments are merely illustrative of the principles and effects of the present application, and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present application shall still be covered by the claims of the present application.

Claims

1. A control method for multiple thyristor power regulators, characterized in that: For time-sharing and alternating control of multiple thyristor power regulators of a target power supply among multiple groups of power supplies, where the target power supply is one of the multiple groups of power supplies; the control method includes: Obtain the required power of the target power supply; When the required power of the target power supply meets the first condition, control the multiple thyristor power regulators with a first control strategy; the first control strategy is phase-shifting control; When the required power of the target power supply meets the second condition, control the multiple thyristor power regulators with a second control strategy; the second control strategy is cycle control; When the required power of the target power supply meets the third condition, control the multiple thyristor power regulators with a third control strategy; the third control strategy is to first perform cycle control and then perform phase-shifting control after the cycle control ends; Wherein, when controlling the multiple thyristor power regulators with the first control strategy, there is no overlapping interval or gap interval in the operating time of adjacent two thyristor power regulators; when controlling the multiple thyristor power regulators with the second control strategy and the third control strategy, there is an overlapping interval in the operating time of adjacent two thyristor power regulators.

2. The control method of multiple thyristor power regulators according to claim 1, characterized in that: The first condition includes: The required power P of the target power supply < p0 / N, where N represents the number of thyristors in each group of power supplies, and p0 represents the power of each group of power supplies among the multiple groups of power supplies.

3. The control method of multiple thyristor power regulators according to claim 2, characterized in that: The first control strategy includes: Within a cycle T, in the kth time period t, the kth thyristor power regulator operates with phase shift according to the ratio of (N*P / p0)*100%, T = N*t, k = 1, 2,..., N.

4. The control method of multiple thyristor power regulators according to claim 1, characterized in that: The second condition includes: The required power P of the target power supply = p0*L / N, L = 1, 2,..., N, where N represents the number of thyristors in each group of power supplies, and p0 represents the power of each group of power supplies among the multiple groups of power supplies.

5. The control method of multiple thyristor power regulators according to claim 4, characterized in that: The second control strategy includes: Within a cycle T, the kth thyristor power regulator starts full-output operation from the kth time period t, and the full-output operation time is k + L time periods t, T = N*t, k = 1, 2,..., N.

6. The control method of multiple thyristor power regulators according to claim 1, characterized in that: The third condition includes: The required power P of the target power supply is between p0*L / N and p0*(L + 1) / N, L = 1, 2,..., N - 1; N represents the number of thyristors in each group of power supplies, and p0 represents the power of each group of power supplies among the multiple groups of power supplies.

7. The control method of multiple thyristor power regulators according to claim 6, characterized in that: The third control strategy includes: Within a cycle T, the kth thyristor power regulator starts full-output operation from the kth time period t, and the full-output operation time is k + L time periods t; after the full-output operation ends, in the (k + L + 1)th time period t, it operates with phase shift according to the ratio of ((N*P - L*p0) / p0)*100%, T = N*t, k = 1, 2,..., N.

8. A control device for multiple thyristor power regulators, characterized in that: For time-sharing and alternating control of multiple thyristor power regulators of a target power supply among multiple groups of power supplies, where the target power supply is one of the multiple groups of power supplies; the control device includes: A power acquisition module for acquiring the required power of the target power supply; A first control module, configured to control the plurality of thyristor power regulators using a first control strategy when the required power of the target power source meets a first condition; the first control strategy is phase shift control; A second control module, configured to control the plurality of thyristor power regulators using a second control strategy when the required power of the target power source meets a second condition; the second control strategy is frequency control; A third control module is used to control the plurality of thyristor power regulators with a third control strategy when the required power of the target power source meets a third condition; the third control strategy is to first perform frequency control and then perform phase shift control after the frequency control ends; Among them, when the first control strategy is used to control multiple thyristor power regulators, there is no time gap between the operations of two adjacent thyristor power regulators, and there is no overlapping interval in the operation time; when the second control strategy and the third control strategy are used to control multiple thyristor power regulators, there is an overlapping interval in the operation time of two adjacent thyristor power regulators.

9. A control device for multiple thyristor power regulators, characterized in that: include: One or more processors and a memory, the memory being used to store one or more programs, and when the one or more programs are executed by the one or more processors, the memory implements the control method for multiple thyristor power regulators as described in any one of claims 1-7.

10. A machine-readable medium, characterized in that Instructions are stored thereon, and when executed by one or more processors, the processors execute the control method for multiple thyristor power regulators as described in any one of claims 1-7.

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