Control Method, Device, Equipment and Medium for Multiple Thyristor Power Regulators

Abstract

The present application discloses a control method, device, equipment and medium for multiple thyristor power regulators. The control method includes: when the required power of the target power supply meets the first condition, controlling 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, 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 supply meets the 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-shifting control after the cycle control ends. The present invention combines methods such as phase-shifting and cycle control, and largely eliminates power quality problems such as high high-order harmonics, low power factor, and large power impact generated when multiple thyristor power regulators work together.

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:

[0006] Obtain the required power of the target power supply;

[0007] When the required power of the target power source meets the first condition, the plurality of thyristor power regulators are controlled using a first control strategy; the first control strategy is phase shift control;

[0008] 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;

[0009] 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;

[0010] Among them, when controlling 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 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.

[0011] In an embodiment of the present invention, the first condition includes:

[0012] The required power P of the target power supply is less than 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 in multiple groups of power supplies.

[0013] In an embodiment of the present invention, the first control strategy includes:

[0014] Within the period T, within the k-th time period t, the k-th thyristor power regulator operates with phase shift at a ratio of (N*P / p0)×100%, T = N*t, k = 1, 2,..., N.

[0015] In an embodiment of the present invention, the second condition includes:

[0016] The required power P of the target power supply is p0*L / N, where L = 1, 2,..., N, N represents the number of thyristors in each group of power supplies, and p0 represents the power of each group of power supplies in multiple groups of power supplies.

[0017] In an embodiment of the present invention, the second control strategy includes:

[0018] Within the period T, the k-th thyristor power regulator starts full-output operation from the k-th time period t, and the full-output operation time is k + L time periods t, T = N*t, k = 1, 2,..., N.

[0019] In an embodiment of the present invention, the third condition includes:

[0020] The required power P of the target power supply is between p0*L / N and p0*(L + 1) / N, where 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 in multiple groups of power supplies.

[0021] In an embodiment of the present invention, the third control strategy includes:

[0022] Within the period T, the k-th thyristor power regulator starts full-output operation from the k-th time period t, and the full-output operation time is k + L time periods t; after the full-output operation ends, it operates with phase shift at a ratio of ((N*P - L*p0) / p0)×100% within the (k + L + 1)-th time period t, T = N*t, k = 1, 2,..., N.

[0023] To achieve the above and other related purposes, the present application provides a control device for multiple thyristor power regulators, which is used to perform time-sharing and alternating control on multiple thyristor power regulators of a target power supply among multiple groups of power supplies, and the target power supply is one of the multiple groups of power supplies; the control device includes:

[0024] A power acquisition module, which is used to acquire the required power of the target power supply;

[0025] A first control module, which is used to control the multiple thyristor power regulators with a first control strategy when the required power of the target power supply meets the first condition; the first control strategy is phase-shift control;

[0026] A second control module, which is used to control the multiple thyristor power regulators with a second control strategy when the required power of the target power supply meets the second condition; the second control strategy is cycle control;

[0027] A third control module, which is used to control the multiple thyristor power regulators with a third control strategy when the required power of the target power supply meets the third condition; the third control strategy is to first perform cycle control and then perform phase-shift control after the cycle control ends;

[0028] Among them, when controlling the multiple thyristor power regulators with the first control strategy, there is no time gap in the operation of adjacent two thyristor power regulators, and there is no overlapping interval in the operation time; when controlling the multiple thyristor power regulators with the second control strategy and the third control strategy, there is an overlapping interval in the operation time of adjacent two thyristor power regulators.

[0029] To achieve the above and other related purposes, the present application provides a control device for multiple thyristor power regulators, including:

[0030] One or more processors and a memory, and 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 the multiple thyristor power regulators.

[0031] To achieve the above and other related purposes, the present application provides one or more machine-readable media, on which instructions are stored. When executed by one or more processors, the processors execute the control method of the multiple thyristor power regulators.

[0032] The beneficial effects of the present application:

[0033] A control method for multiple thyristor power regulators of the present application includes: obtaining the required power of a target power supply; when the required power of the target power supply meets a first condition, controlling 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 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 supply 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-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 times 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 times of adjacent two thyristor power regulators. The present invention combines methods such as phase-shifting and cycle control, and largely eliminates power quality problems such as high higher harmonics, low power factor, and large power impact generated when multiple thyristor power regulators work together.

[0034] It should be understood that the above general description and subsequent detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts. In the drawings:

[0036] Figure 1 is a structural diagram of a thyristor power regulator according to an embodiment of the present application;

[0037] Figure 2 is a structural diagram of a thyristor power regulator according to another embodiment of the present application;

[0038] Figure 3 is a schematic diagram of controlling a thyristor power regulator in a phase-shifting mode according to an embodiment of the present application;

[0039] Figure 4 is according to an embodiment of the present application Figure 3 is a schematic diagram of the output waveform of controlling the power supply of a thyristor power regulator in a phase-shifting mode;

[0040] Figure 5 is a schematic diagram of controlling a thyristor power regulator in a zero-crossing mode according to an embodiment of the present application;

[0041] Figure 6 Schematic diagram of controlling multiple thyristor power regulators by means of zero-crossing online power distribution according to an embodiment of the present application;

[0042] Figure 7 Schematic diagram of the control method for multiple thyristor power regulators according to an embodiment of the present application;

[0043] Figure 8 Schematic diagram of controlling multiple thyristor power regulators with a first strategy according to an embodiment of the present application;

[0044] Figure 9 Schematic diagram of controlling multiple thyristor power regulators with a second strategy according to an embodiment of the present application;

[0045] Figure 10 Schematic diagram of controlling multiple thyristor power regulators with a third strategy according to an embodiment of the present application;

[0046] Figure 11 Schematic diagram of the control of multiple thyristor power regulators according to an embodiment of the present application;

[0047] Figure 12 Schematic diagram showing the structure of a computer system of a memory suitable for implementing the embodiments of the present application. Detailed implementation manners

[0048] The following uses specific specific examples to illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0049] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner. Therefore, only the components related to the present application are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The forms, quantities, and proportions of the components in actual implementation can be arbitrarily changed, and the layout form of the components may also be more complex.

[0050] Although terms such as "first", "second", "A", and "B" 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, without departing from the scope of the following technology, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element. The term "and / or" includes combinations of multiple related items or any item among multiple related items.

[0051] As used herein, unless the context indicates otherwise, the singular forms are also intended to include the plural forms. It will be understood that the term "comprising" means the presence of the recited features, quantities, steps, operations, elements, or combinations thereof, but does not preclude the presence or addition of one or more other features, quantities, steps, operations, elements, components, or combinations thereof.

[0052] Before the detailed description, it is intended to clarify that the division of components in this specification is only based on the main functions of each component. That is, two or more of the components 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 functions of the components, each of the components 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 specifically performed by other components.

[0053] With the rapid implementation of the national policy of "electrification of end-use energy", the scale of application of technologies such as electric boilers, electric kilns, and industrial induction heating in the industrial production field has gradually expanded. Most of these electric heating devices use thyristor power regulators to achieve power regulation, and then achieve the control of heating temperature and process. The thyristor power regulator has the advantages of fast response speed, wide power regulation range, reliable operation and low cost. However, in most of the power regulation ranges, problems such as excessive harmonic content, low power factor, and large power impact limit its application.

[0054] The thyristor power regulator is generally used in single-phase or three-phase power circuits. Each phase is composed of thyristors connected in anti-parallel. By controlling the triggering of the thyristors, the output voltage of the thyristor power regulator can be controlled, so as to achieve the purpose of adjusting the load voltage and power on the thyristor power regulator. The structure of the thyristor power regulator is as Figure 1 、 2 shown. By controlling the conduction of thyristors V1~V6, the change of load power is achieved.

[0055] In high-power application scenarios, there are often multiple heaters with the same rated power operating in a furnace group at the same time. How to maximize the improvement of the power quality problems generated during their operation is of great significance.

[0056] Common control schemes for controlling multiple thyristor power regulators are phase-shifting and cycle control.

[0057] (1)Phase-shifting mode

[0058] As Figure 3 shown, by changing the conduction angle of the thyristors in each sine wave, the output voltage is changed, so as to adjust the power. From Figure 4It can be seen that for the equipment operating in this mode, there are serious high - order harmonic problems, especially the large proportion of the 5th and 7th harmonics. In the field of electric heating with large - scale multiple applications, if the phase - shifting control power - regulation control method is adopted, each high - order harmonic will be linearly superimposed, and the harmonic problem will be amplified, resulting in serious power - quality problems.

[0059] (2)Zero - crossing mode

[0060] As Figure 5 shown, by conducting a certain number of sine waves within a certain period and adjusting the output power by the proportion of the conducted sine waves. In this scheme, since each - phase thyristor conducts at the natural commutation point, the current waveform in each period is either a complete sine wave or the current is zero. However, this causes an impact on the grid active power. In general, in small - power application scenarios, the power - quality problems are not obvious, while in large - power application scenarios with multiple units operating simultaneously, it will cause power - quality problems such as voltage fluctuations and flickers.

[0061] (3)Zero - crossing online power distribution

[0062] As Figure 6 shown, when multiple thyristor power - regulators operate in the zero - crossing mode, by reasonably distributing the conduction time of the sine waves of each power supply, the impact on the grid is reduced. This scheme is a commonly used one in the current multi - machine distribution algorithms. It controls the start time and duty cycle of multiple heaters to control the power quality of the main line of the thyristor power - regulator. However, except for very few special cases, there are still relatively serious active - power impact problems on the main line. Taking the example of N heaters with power P operating simultaneously, only when the total power of the heaters is nP (1 ≤ n ≤ N) can the active - power impact problem be eliminated.

[0063] It can be known that when multiple thyristor power - regulators use the phase - shifting mode, the harmonics are large and the power - factor problem is serious; when multiple thyristor power - regulators use the cycle - control mode, the power - impact problem is serious, which will cause power - quality problems such as fluctuations and flickers; when using the zero - crossing online power - distribution mode, only the impact problem is alleviated at some power points, and there are still impacts in most power segments, so it cannot be applied to fields with high requirements for power quality.

[0064] Based on the above problems existing in the control of 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. The following will describe these embodiments in detail.

[0065] Figure 7Schematic diagram of the control method for multiple thyristor power regulators according to an embodiment of the present application. The present application provides a control method for multiple thyristor power regulators, which is used to perform time-sharing and rotation control on multiple thyristor power regulators of a target power supply among multiple groups of power supplies, and the target power supply is one of the multiple groups of power supplies. In Figure 7 it, the control method includes:

[0066] Step S710, obtaining the required power of the target power supply;

[0067] Step S720, when the required power of the target power supply meets the first condition, controlling the multiple thyristor power regulators with a first control strategy; the first control strategy is phase-shift control;

[0068] Step S730, when the required power of the target power supply meets the second condition, controlling the multiple thyristor power regulators with a second control strategy; the second control strategy is cycle control;

[0069] Step S740, when the required power of the target power supply meets the 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;

[0070] Among them, when controlling the multiple thyristor power regulators with the first control strategy, there is no time gap in the operation of adjacent two thyristor power regulators, and there is no overlapping interval in the operation time; when controlling the multiple thyristor power regulators with the second control strategy and the third control strategy, there is an overlapping interval in the operation time of adjacent two thyristor power regulators.

[0071] The present invention combines methods such as phase-shift and cycle control, and largely eliminates power quality problems such as high higher harmonics, low power factor, and large power impact generated when multiple thyristor power regulators work together.

[0072] In order to further illustrate the embodiments of the present application in detail, in one embodiment, the entire power supply system includes M (M≥1) groups of power supplies, and each group of power supplies includes N (N≥2) thyristor power regulators. Among them, the power of each group of power supplies is p0, that is, the rated power of each thyristor power regulator is p0 / N. When N thyristor power regulators operate together, the control strategy for multiple thyristor power regulators is as follows:

[0073] In one embodiment, 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 multiple groups of power supplies.

[0074] The first control strategy includes: within the cycle T, within the kth time period t, the kth thyristor power regulator operates with a phase shift ratio of (N*P / p0)*100%, T=N*t, k=1,2,...,N.

[0075] 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.

[0076] 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 <p0 / N时,第k台晶闸管调功器在第k个时间段t内运行,其余时间不运行,第k台晶闸管调功器按(N*P / p0)的比例移相运行(k=1,2,...,N)。如 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.

[0077] 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.

[0078] In one embodiment, the second condition includes: the required power P of the target power source = p0*L / N, L=1,2,...,N, N represents the number of thyristors in each group of power sources, and p0 represents the power of each group of power sources in the multiple groups of power sources.

[0079] 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.

[0080] It should be noted that when multiple thyristor power regulators are controlled by the second control strategy, there is an overlapping interval in the operating times of adjacent thyristor power regulators. The existence of an overlapping interval in the operating times of adjacent thyristor power regulators means that when the first thyristor power regulator has not finished operating, 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. When the target power demand of the power supply in the group P = p0*L / N (L = 1, 2,..., N), within the period T = N*t, the k-th thyristor power regulator starts full-output operation from the k-th time period t, and the full-output operation time is k + L time periods. As Figure 9 shown, it can be seen from the trunk line waveform that the uniformity of the trunk line waveform connected to the power grid is good, and there are basically no power quality problems.

[0081] In this application, through the segmented full-power output strategy, the total demand power is distributed to N power regulators, and each power regulator operates at full power for L + 1 time periods within the specified time period. This strategy ensures accurate power distribution, load balance, and meets the requirements of system efficiency and equipment life through cyclic timing control.

[0082] In one embodiment, the third condition includes: the demand power P of the target power supply is between p0*L / N and p0*(L + 1) / N, where 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 in multiple groups of power supplies.

[0083] The third control strategy includes: within the period T, the k-th thyristor power regulator starts full-output operation from the k-th time period t, and the full-output operation time is k + L time periods t; after the full-output operation ends, it operates with phase shift at a ratio of ((N*P - L*p0) / p0)*100% within the (k + L + 1)-th time period t, where T = N*t and k = 1, 2,..., N.

[0084] It should be noted that when multiple thyristor power regulators are controlled by the third control strategy, there is an overlapping interval in the operating times of adjacent thyristor power regulators. The existence of an overlapping interval in the operating times of adjacent thyristor power regulators means that when the first thyristor power regulator has not finished operating, 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.

[0085] When the required power P of the target power supply within the group satisfies p0*L / N < P < p0*(L + 1) / N (where L = 1, 2,..., N - 1), within the period T = N*t, the k-th thyristor power regulator starts full-output operation from the k-th time t, and the full-output operation time is k + L time segments; after the full-output operation ends, it operates with phase shift at a ratio of ((N*P - L*p0) / p0)*100% within the (k + L + 1)-th time segment t. The remaining time segments are turned off without power output. If the time segment index exceeds N, it loops back to the start of the period. For example, when k + L > N, it covers to the end of the period and continues from the start. As Figure 10 shown, according to the main line waveform, it can be seen that the waveform uniformity of the main line connected to the power grid is good, without power impact and power blank problems. At any moment, only one power regulator generates harmonics. In this case, usually no harmonic governance is required or a small-capacity filter can be used to filter out the harmonics.

[0086] In one embodiment, if the power supply system has M groups of power supplies, where the operating power ratio P' of M - 1 groups of power supplies is p0*i / N (i = 0, 1, 2,..., N), and only 1 group of power supplies has an operating power ratio P ≠ p0*i / N. Taking M = 5 and N = 4 as an example, the operation distribution is shown in the table:

[0087]

[0088] It can be seen that at this time, the total power of all power supplies is also steplessly adjustable, the entire operation has no impact, and the harmonic components are the smallest.

[0089] In summary, through the combination of methods such as phase shift and cycle control, the present invention largely eliminates power quality problems such as high high-order harmonics, low power factor, and large power impact generated when multiple thyristor power regulators work together.

[0090] It should be noted that in Figure 3 、 Figure 5 、 Figure 6 、 Figure 8 、 Figure 9 、 Figure 10 ,the abscissa represents time or period, and the ordinate represents current.

[0091] It should be understood that the magnitudes of the sequence numbers of the steps in the above embodiments do 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 to the implementation process of the embodiments of the present application.

[0092] Figure 11It 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 alternating control on multiple thyristor power regulators of a target power supply among multiple power supplies, and the target power supply is one of the multiple power supplies. As Figure 11 shown, a control device for multiple thyristor power regulators, the control device includes:

[0093] A power acquisition module, configured to acquire the required power of the target power supply;

[0094] A first control module, configured to control multiple thyristor power regulators with a first control strategy when the required power of the target power supply meets the first condition; the first control strategy is phase-shifting control;

[0095] A second control module, configured to control multiple thyristor power regulators with a second control strategy when the required power of the target power supply meets the second condition; the second control strategy is cycle control;

[0096] A third control module, configured to control multiple thyristor power regulators with a third control strategy when the required power of the target power supply meets the third condition; the third control strategy is to first perform cycle control and then perform phase-shifting control after the cycle control ends;

[0097] Wherein, when controlling multiple thyristor power regulators with the first control strategy, there is no time gap in the operation of adjacent two thyristor power regulators, and there is no overlapping interval in the operation time; when controlling multiple thyristor power regulators with the second control strategy and the third control strategy, there is an overlapping interval in the operation time of adjacent two thyristor power regulators.

[0098] 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. The specific manners in which each module and unit perform operations have been described in detail in the method embodiment, and will not be elaborated here. The control device for multiple thyristor power regulators provided in the above embodiment can, in actual application, 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 either.

[0099] An embodiment of the present application further provides a device, including:

[0100] One or more processors and a memory, the memory is 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 in the above embodiment.

[0101] Embodiments of the present application also provide one or more machine-readable media having instructions stored thereon that, when executed by one or more processors, cause the processors to perform the control method of multiple thyristor power regulators in the above embodiments.

[0102] Figure 12 The structural schematic diagram of a computer system suitable for implementing the memory of the embodiments of the present invention is shown. It should be noted that, Figure 12 The computer system of the shown memory is only an example and should not bring any limitation to the functions and usage scope of the embodiments of the present invention.

[0103] As Figure 12 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 into the random access memory (RAM) 1203, such as performing the method in the above embodiments. In the RAM, various programs and data required for system operation are also stored. 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.

[0104] The following components are connected to the I / O interface 1205: an input part 1206 including a keyboard, a mouse, etc.; an output part 1207 including such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc. and a speaker, etc.; a storage part 1208 including a hard disk, etc.; and a communication part 1209 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication part 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 the computer program read from it can be installed into the storage part 1208 as needed.

[0105] In particular, according to an embodiment of the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, an embodiment of the present invention includes a computer program product that includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the control method of the plurality of thyristor power regulators described in the foregoing embodiments. In such an embodiment, the computer program can be downloaded and installed from the network through the communication section 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.

[0106] It should be noted that the computer-readable medium shown in the embodiments of the present invention can be a computer-readable signal medium or a computer-readable storage medium or any combination of the two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having 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 disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present invention, the computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable computer program. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. The computer-readable signal medium can also be any computer-readable medium other than the computer-readable storage medium, and the computer-readable medium can send, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device. The computer program included on the computer-readable medium can be transmitted by any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0107] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present invention. In a flowchart or block diagram, each box may represent a module, a program segment, or a part of code, and the above-mentioned module, program segment, or part of 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 boxes may occur in a different order than that marked in the accompanying drawings. For example, two consecutive boxes shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, as well as the combination of boxes in the block diagram or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0108] The units involved in the embodiments of the present invention can be implemented in software or in hardware, and the described units can also be provided in a processor. Among them, the names of these units do not, in some cases, constitute a limitation on the unit itself.

[0109] Another aspect of the present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor of the computer, the computer is caused to execute the control method of multiple thyristor power regulators as described above. The computer-readable storage medium can be included in the memory described in the above embodiments, or can exist separately and not be assembled into the memory.

[0110] Another aspect of the present invention also provides a computer program product or a computer program. The computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the 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 various embodiments.

[0111] The above embodiments are only used to exemplarily illustrate the principles and effects of the present application, rather than to limit the present application. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present application should 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-shift 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-shift 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; the first condition includes: the required power P of the target power supply < p0 / N, 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; the second condition includes: the required power P of the target power supply = p0*L / N, L = 1, 2,..., N; 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.

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

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

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

5. 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 obtaining the required power of the target power supply; A first control module for controlling the multiple thyristor power regulators with a first control strategy when the required power of the target power supply meets the first condition; the first control strategy is phase-shift control; A second control module, configured to control the multiple thyristor power regulators with a second control strategy when the required power of the target power supply meets a second condition; the second control strategy is cycle control; A third control module, configured to control the multiple thyristor power regulators with a third control strategy when the required power of the target power supply meets a third condition; the third control strategy is to first perform cycle control and then perform phase-shift control after the cycle control ends; Wherein, when controlling the multiple thyristor power regulators with the first control strategy, there is no time gap in the operation of two adjacent thyristor power regulators, and there is no overlapping interval in the operation time; when controlling the multiple thyristor power regulators with the second control strategy and the third control strategy, there is an overlapping interval in the operation time of two adjacent thyristor power regulators; 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 in multiple groups of power supplies; the second condition includes: the required power P of the target power supply = p0*L / N, L = 1, 2,..., N, and 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.

6. A control device for multiple thyristor power regulators, characterized in that: Comprising: One or more processors and a memory, the memory is 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 of the multiple thyristor power regulators as described in any one of claims 1-4.

7. A machine-readable medium, characterized in that Instructions are stored thereon, and when executed by one or more processors, cause the processors to execute the control method of the multiple thyristor power regulators as described in any one of claims 1-4.

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