Phase sequence trigger signal determination method and apparatus, AC input voltage signal abnormity type determination method and system, and phase sequence trigger signal determination device and system

Abstract

The invention discloses a phase sequence trigger signal determination method and device, an AC input voltage signal abnormity type determination method and system, and a phase sequence trigger signal determination device and system, and relates to the technical field of power generation. The phase sequence trigger signal determination method comprises the following steps: acquiring a plurality of first DC voltage signals; according to a first peak value corresponding to each first direct-current voltage signal in the plurality of first direct-current voltage signals, generating first state information of the direct-current voltage signal set; verifying the first state information to obtain a verification result; and outputting a phase sequence trigger signal according to the verification result and the first state information. According to the embodiment of the invention, the method can reduce the requirements of technicians, and improves the recognition efficiency of the AC input signal.

Description

Technical Field

[0001] The present application belongs to the field of power generation technology, and specifically relates to a method and device for determining a phase sequence trigger signal, a method and system for determining an abnormal type of an AC input voltage signal, and a device and system for determining a phase sequence trigger signal. Background Art

[0002] Globally, with the increasing attention paid to renewable energy and low-carbon technologies, the rectifier power supply system based on thyristor power electronic devices with mature technology and high reliability has the advantages of small project construction investment, low noise, high efficiency, easy maintenance, high reliability, etc., and has broad market prospects; industrial users are also increasingly demanding the performance and intelligence level of power electronic equipment.

[0003] In a multi-AC input thyristor rectifier system, in order to improve or solve the problem of voltage output distortion, system failure and safety hazards caused by unstable AC input voltage or connection errors, it is necessary to trigger the thyristors in order according to the phase sequence of the AC input. In the prior art, the AC input signal is usually manually identified and then manually connected to the corresponding thyristor link to ensure the normal operation of the system. However, in the above method, manual identification of AC input signals has high technical requirements, low identification efficiency, and the problem of phase sequence connection error when manually connecting to the corresponding thyristor link. Summary of the invention

[0004] The technical problem to be solved by the present application is to provide a phase sequence trigger signal determination method and device, an AC input voltage signal abnormality type determination method and system, and a phase sequence trigger signal determination device and system in response to the above-mentioned deficiencies in the prior art. This method can automatically output a phase sequence trigger signal, thereby reducing the requirements for technical personnel and improving the recognition efficiency of AC input signals.

[0005] In a first aspect, an embodiment of the present application provides a method for determining a phase sequence trigger signal, which is applied to an electronic control device, and the method includes:

[0006] S110, acquiring a plurality of first DC voltage signals corresponding to the plurality of AC input voltage signals one by one, wherein the frequencies of any two of the first DC voltage signals are the same, and each of the plurality of first DC voltage signals fluctuates periodically;

[0007] S120, generating first state information of a DC voltage signal set according to a first peak value corresponding to each first DC voltage signal among a plurality of first DC voltage signals;

[0008] S130, verifying the first state information to obtain a verification result;

[0009] S140. Output a phase sequence trigger signal according to the verification result and the first state information, where the phase sequence trigger signal is used to trigger the thyristor to turn on or off.

[0010] In some embodiments of the first aspect, the electronic control device is connected to the voltage monitoring isolation module;

[0011] Step S110 specifically includes:

[0012] Receive multiple first DC voltage signals sent by the voltage monitoring isolation module, wherein the multiple first DC voltage signals are obtained by the voltage monitoring isolation module according to the AC input voltage signals collected by multiple voltage collectors, and the peak value of each DC voltage signal in the multiple first DC voltage signals is less than 20V.

[0013] In some embodiments of the first aspect, the first state information includes a plurality of first frequencies, a plurality of first phase differences, and a plurality of first voltage amplitudes, the first frequency being the frequency of a DC voltage signal in a DC voltage signal set, the first phase difference being the phase difference between two adjacent DC voltage signals in the DC voltage signal set, and the first frequency being the voltage amplitude of a DC voltage signal in the DC voltage signal set;

[0014] Step S120 specifically includes:

[0015] Determine a second DC voltage signal from the plurality of first DC voltage signals, the second DC voltage signal comprising a plurality of adjacent second peak values;

[0016] Determine a first DC voltage signal whose first peak value is between two adjacent second peak values ​​as a third DC voltage signal to obtain at least one third DC voltage signal;

[0017] generating a DC voltage signal set according to the second DC voltage signal and at least one third DC voltage signal;

[0018] According to the DC voltage signal set, a plurality of first frequencies, a plurality of first phase differences and a plurality of first voltage amplitudes corresponding thereto are determined.

[0019] In some embodiments of the first aspect, the first state information includes a plurality of first frequencies, a plurality of first phase differences, and a plurality of first voltage amplitudes, the first frequency being the frequency of a DC voltage signal in a DC voltage signal set, the first phase difference being the phase difference between two adjacent DC voltage signals in the DC voltage signal set, and the first frequency being the voltage amplitude of a DC voltage signal in the DC voltage signal set;

[0020] Step S130 specifically includes:

[0021] Obtain second state information corresponding to the target DC voltage signal set, the second state information including multiple second frequencies, multiple second phase differences and multiple second voltage amplitudes, the second frequency is the frequency of the DC voltage signal in the target DC voltage signal set, the second phase difference is the phase difference between two adjacent target DC voltage signals in the target DC voltage signal set; the second voltage amplitude is the voltage amplitude of the DC voltage signal in the target DC voltage signal set; when multiple first frequencies and multiple second frequencies are identical in one-to-one correspondence, multiple first phase differences and multiple second phase differences are identical in one-to-one, and multiple first voltage amplitudes and multiple second voltage amplitudes are identical in one-to-one correspondence, determine that the verification result is passed;

[0022] When at least one first frequency is different from its corresponding second frequency, and / or at least one first phase difference is different from its corresponding second phase difference, and / or at least one first voltage amplitude is different from its corresponding second voltage amplitude, the verification result is determined to be verification failure.

[0023] In some implementations of the first aspect, obtaining second state information corresponding to the target DC voltage signal set includes:

[0024] Determining a fourth DC voltage signal from the plurality of first DC voltage signals, the fourth DC voltage signal comprising a plurality of adjacent third peaks;

[0025] Determine the first DC voltage signal whose first peak value is between two adjacent third peak values ​​as a fifth DC voltage signal to obtain at least one fifth DC voltage signal;

[0026] generating a target DC voltage signal set according to the fourth DC voltage signal and at least one fifth DC voltage signal;

[0027] According to the target DC voltage signal set, a plurality of second frequencies, a plurality of second phase differences and a plurality of second voltage amplitudes corresponding thereto are determined.

[0028] In some implementations of the first aspect, step S140 specifically includes:

[0029] When the verification result includes verification passed, outputting a phase sequence trigger signal according to the first state information;

[0030] Alternatively, when the verification result includes verification failure, steps S120 to S130 are repeatedly performed until the verification result includes verification pass, and a phase sequence trigger signal is output according to the first state information obtained after the cycle.

[0031] In some implementations of the first aspect, after step S140, the method further includes:

[0032] Stores phase sequence trigger signal.

[0033] Based on the same inventive concept, in a second aspect, an embodiment of the present application further provides a method for determining an abnormal type of an AC input voltage signal, which is applied to an electronic control device, and the method includes:

[0034] According to the phase sequence trigger signal determination method of any one of the first aspects, a phase sequence trigger signal is output, the phase sequence trigger signal corresponds to first state information, and the first state information includes a plurality of first frequencies, a plurality of first phase differences, and a plurality of first voltage amplitudes;

[0035] According to the plurality of first frequencies, the plurality of first phase differences and the plurality of first voltage amplitudes, the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is determined.

[0036] In some implementations of the second aspect, determining the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal according to the multiple first frequencies, the multiple first phase differences, and the multiple first voltage amplitudes includes:

[0037] In the case that at least two of the multiple first frequencies are different, determining that the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is harmonic;

[0038] Alternatively, when at least one first phase difference among the multiple first phase differences is twice another first phase difference, determining that the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is phase loss;

[0039] Alternatively, if at least one of the multiple first voltage amplitudes is greater than 1.1 times of another first voltage amplitude, it is determined that the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is voltage instability.

[0040] Based on the same inventive concept, in a third aspect, an embodiment of the present application provides a phase sequence trigger signal determination device, which is applied to an electronic control device, and the device includes:

[0041] A first acquisition module is used to acquire a plurality of first DC voltage signals corresponding to the plurality of AC input voltage signals one by one, wherein the frequencies of any two first DC voltage signals are the same, and each of the plurality of first DC voltage signals fluctuates periodically;

[0042] A generating module, configured to generate first state information of a DC voltage signal set according to a first peak value corresponding to each first DC voltage signal among a plurality of first DC voltage signals;

[0043] A verification module, used to verify the first state information and obtain a verification result;

[0044] The output module is used to output a phase sequence trigger signal according to the verification result and the first state information, and the phase sequence trigger signal is used to trigger the thyristor to turn on or off.

[0045] In some embodiments of the third aspect, the electronic control device is connected to the voltage monitoring isolation module;

[0046] The first acquisition module is specifically used for:

[0047] Receive multiple first DC voltage signals sent by the voltage monitoring isolation module, wherein the multiple first DC voltage signals are obtained by the voltage monitoring isolation module according to the AC input voltage signals collected by multiple voltage collectors, and the peak value of each DC voltage signal in the multiple first DC voltage signals is less than 20V.

[0048] In some embodiments of the third aspect, the first state information includes a plurality of first frequencies, a plurality of first phase differences, and a plurality of first voltage amplitudes, the first frequency being the frequency of the DC voltage signal in the DC voltage signal set, the first phase difference being the phase difference between two adjacent DC voltage signals in the DC voltage signal set, and the first frequency being the voltage amplitude of the DC voltage signal in the DC voltage signal set;

[0049] Generate modules, specifically for:

[0050] Determine a second DC voltage signal from the plurality of first DC voltage signals, the second DC voltage signal comprising a plurality of adjacent second peak values;

[0051] Determine a first DC voltage signal whose first peak value is between two adjacent second peak values ​​as a third DC voltage signal to obtain at least one third DC voltage signal;

[0052] generating a DC voltage signal set according to the second DC voltage signal and at least one third DC voltage signal;

[0053] According to the DC voltage signal set, a plurality of first frequencies, a plurality of first phase differences and a plurality of first voltage amplitudes corresponding thereto are determined.

[0054] In some embodiments of the third aspect, the first state information includes a plurality of first frequencies, a plurality of first phase differences, and a plurality of first voltage amplitudes, the first frequency being the frequency of the DC voltage signal in the DC voltage signal set, the first phase difference being the phase difference between two adjacent DC voltage signals in the DC voltage signal set, and the first frequency being the voltage amplitude of the DC voltage signal in the DC voltage signal set;

[0055] Verification module, specifically used for:

[0056] Obtain second state information corresponding to the target DC voltage signal set, the second state information including multiple second frequencies, multiple second phase differences and multiple second voltage amplitudes, the second frequency is the frequency of the DC voltage signal in the target DC voltage signal set, the second phase difference is the phase difference between two adjacent target DC voltage signals in the target DC voltage signal set; the second voltage amplitude is the voltage amplitude of the DC voltage signal in the target DC voltage signal set; when multiple first frequencies and multiple second frequencies are identical in one-to-one correspondence, multiple first phase differences and multiple second phase differences are identical in one-to-one, and multiple first voltage amplitudes and multiple second voltage amplitudes are identical in one-to-one correspondence, determine that the verification result is passed;

[0057] When at least one first frequency is different from its corresponding second frequency, and / or at least one first phase difference is different from its corresponding second phase difference, and / or at least one first voltage amplitude is different from its corresponding second voltage amplitude, the verification result is determined to be verification failure.

[0058] Based on the same inventive concept, in a fourth aspect, an embodiment of the present application further provides a system for determining an abnormal type of an AC input voltage signal, which is applied to an electronic control device, and the system includes:

[0059] The phase sequence trigger signal determination device according to any one of the third aspects is used to output a phase sequence trigger signal, the phase sequence trigger signal corresponds to first state information, and the first state information includes a plurality of first frequencies, a plurality of first phase differences, and a plurality of first voltage amplitudes;

[0060] The AC input voltage signal abnormality type determination device is connected to the phase sequence trigger signal determination device and is used to determine the abnormality type of the AC input voltage signal corresponding to the phase sequence trigger signal based on multiple first frequencies, multiple first phase differences and multiple first voltage amplitudes.

[0061] In some implementations of the fourth aspect, the device for determining an abnormal type of an AC input voltage signal is specifically configured to:

[0062] Determining the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal according to the multiple first frequencies, the multiple first phase differences, and the multiple first voltage amplitudes includes:

[0063] In the case that at least two of the multiple first frequencies are different, determining that the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is harmonic;

[0064] Alternatively, when at least one first phase difference among the multiple first phase differences is twice another first phase difference, determining that the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is phase loss;

[0065] Alternatively, if at least one of the multiple first voltage amplitudes is greater than 1.1 times of another first voltage amplitude, it is determined that the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is voltage instability.

[0066] Based on the same inventive concept, in a fifth aspect, an embodiment of the present application further provides a phase sequence trigger signal determination device, which is applied to an electronic control device, wherein the electronic control device is a rectifier power supply control system of a thyristor, and the device includes:

[0067] A plurality of voltage collectors, each of the plurality of voltage collectors is used to collect a corresponding AC input voltage signal to obtain a plurality of AC input voltage signals;

[0068] A voltage monitoring isolation module is connected to the multiple voltage collectors respectively, and is used to convert each of the multiple AC input voltage signals into a first DC voltage signal with periodic fluctuations to obtain multiple first DC voltage signals;

[0069] An electronic control device is connected to the voltage monitoring isolation module and is used to execute the phase sequence trigger signal determination method as described in any one of the first aspects.

[0070] In some implementations of the fifth aspect, the voltage monitoring isolation module includes:

[0071] A conversion circuit, for converting each of the multiple AC input voltage signals into an initial voltage signal to obtain multiple initial voltage signals, wherein the peak value of the initial voltage signal is less than 20V;

[0072] A first operational amplifier circuit is connected to the conversion circuit and is used for performing equivalent isolation and following on each of the multiple initial voltage signals to obtain a following voltage signal, thereby obtaining multiple following voltage signals;

[0073] The second operational amplifier circuit is connected to the first operational amplifier circuit, and is used for performing voltage translation and raising on each of the multiple follower voltage signals to obtain a first DC voltage signal, so as to obtain multiple first DC voltage signals.

[0074] In some embodiments of the fifth aspect, each of the plurality of voltage collectors activates a fuse protection effect when the current reaches 0.1A or the voltage peak reaches 1000V to protect the electronic control device;

[0075] And / or, the monitoring conversion rate of the electronic control device is 12.5M / s, the phase shift resolution of the electronic control device is 0.0036°, the time accuracy of the electronic control device is 0.2us, and the asymmetry of the electronic control device is less than or equal to 0.1°.

[0076] Based on the same inventive concept, in a sixth aspect, an embodiment of the present application further provides a phase sequence trigger signal determination system, comprising:

[0077] The thyristor bridge arm includes a plurality of thyristor rectifier matrices, each of the plurality of thyristor rectifier matrices includes a plurality of unit groups connected in series, each of the plurality of unit groups includes a first thyristor and a second thyristor connected in series, and the first thyristor and the second thyristor have different gate turn-on signals;

[0078] As in any one of the phase sequence trigger signal determination devices of the fifth aspect, the phase sequence trigger signal determination device comprises an electronic control device and a plurality of voltage collectors;

[0079] Each of the multiple voltage collectors is connected to the first pole of the first thyristor of each unit group in the corresponding thyristor rectifier matrix and the second pole of the second thyristor, and is used to provide an AC input voltage signal to the first pole of the first thyristor of each unit group in the corresponding thyristor rectifier matrix and the second pole of the second thyristor;

[0080] an electronic control device connected to the first thyristor and the second thyristor in each unit group of each thyristor rectifier matrix, and used to output a phase sequence trigger signal to control the first thyristor and the second thyristor in each unit group of each thyristor rectifier matrix to turn on or off,

[0081] Wherein, the phase sequence trigger signal includes a plurality of different pulse signals, the first thyristors in the same thyristor rectifier matrix share the same pulse signal, the second thyristors in the same thyristor rectifier matrix share the same pulse signal, the first thyristors and the second thyristors in the same thyristor rectifier matrix receive different pulse signals, the first thyristors in different thyristor rectifier matrices receive different pulse signals, and the second thyristors in different thyristor rectifier matrices receive different pulse signals;

[0082] The thyristor bridge arm is used to rectify the AC input voltage signal.

[0083] According to the phase sequence trigger signal determination method and device, AC input voltage signal abnormality type determination method and system, phase sequence trigger signal determination device and system provided in the embodiment of the present application, by obtaining multiple first DC voltage signals corresponding to multiple AC input signals one by one, then according to the first peak value corresponding to each first DC voltage signal in the multiple first DC voltage signals, the first state information of the DC voltage signal set is generated, and then the first state information is verified to obtain the verification result, and then the phase sequence trigger signal is output according to the verification result and the first state information. That is to say, on the one hand, in the embodiment of the present application, by automatically verifying the first state information to obtain the verification result, the multiple AC input signals corresponding to the first state information can be identified without the participation of technicians (automatically completed by the equipment), thereby reducing the requirements for technicians and improving the recognition efficiency of AC input signals; on the other hand, through the verification result and the first state information, the phase sequence trigger signal can be automatically output, thereby improving or avoiding the problem of phase sequence connection misoperation when the corresponding thyristor link is manually connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0084] Figure 1 A schematic diagram showing a flow chart of a method for determining a phase sequence trigger signal provided in an embodiment of the present application;

[0085] Figure 2 A schematic diagram showing an AC input voltage signal and a first DC voltage signal provided in an embodiment of the present application;

[0086] Figure 3 A schematic diagram showing a plurality of first DC voltage signals provided in an embodiment of the present application;

[0087] Figure 4 A schematic diagram showing a flow chart of a method for determining an abnormal type of an AC input voltage signal provided in an embodiment of the present application;

[0088] Figure 5 A schematic diagram showing a structure of a phase sequence trigger signal determination device provided in an embodiment of the present application;

[0089] Figure 6 A structural schematic diagram of a system for determining an abnormal type of an AC input voltage signal provided in an embodiment of the present application is shown;

[0090] Figure 7 A schematic diagram showing a structure of a phase sequence trigger signal determination device provided in an embodiment of the present application;

[0091] Figure 8 A structural schematic diagram of a phase sequence trigger signal determination system provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0092] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is further described in detail below with reference to the accompanying drawings and embodiments.

[0093] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0094] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0095] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0096] Example 1

[0097] The phase sequence trigger signal determination method provided in the embodiment of the present application can be applied to an electronic control device, and can be executed by an electronic control device, a phase sequence trigger signal determination device, and a phase sequence trigger signal determination equipment. The following is an explanation of the phase sequence trigger signal determination method executed by an electronic control device. The electronic control device can specifically be a thyristor rectifier power supply control system.

[0098] like Figure 1 As shown, the phase sequence trigger signal determination method provided in the embodiment of the present application may include S110 to S140.

[0099] S110, obtaining a plurality of first DC voltage signals corresponding to the plurality of AC input voltage signals one by one, wherein the frequencies of any two first DC voltage signals are the same, and each of the plurality of first DC voltage signals fluctuates periodically.

[0100] S120 , generating first state information of a DC voltage signal set according to a first peak value corresponding to each first DC voltage signal among a plurality of first DC voltage signals.

[0101] S130: Verify the first state information to obtain a verification result.

[0102] S140. Output a phase sequence trigger signal according to the verification result and the first state information, where the phase sequence trigger signal is used to trigger the thyristor to turn on or off.

[0103] According to the phase sequence trigger signal determination method provided in the embodiment of the present application, by obtaining multiple first DC voltage signals corresponding to multiple AC input signals one by one, then generating the first state information of the DC voltage signal set according to the first peak value corresponding to each first DC voltage signal in the multiple first DC voltage signals, and then verifying the first state information to obtain the verification result, and then outputting the phase sequence trigger signal according to the verification result and the first state information. That is to say, on the one hand, in the embodiment of the present application, by automatically verifying the first state information to obtain the verification result, the multiple AC input signals corresponding to the first state information can be identified without the participation of technicians (automatically completed by the equipment), thereby reducing the requirements for technicians and improving the recognition efficiency of AC input signals; on the other hand, through the verification result and the first state information, the phase sequence trigger signal can be automatically output, thereby improving or avoiding the problem of phase sequence connection misoperation when manually connecting to the corresponding thyristor link.

[0104] The specific implementation methods of the above steps are introduced below.

[0105] In step S110, the first DC voltage signal may be a DC voltage signal received by the electronic control device, the peak value of which is less than 20 V corresponding to the AC input voltage signal. The AC input voltage signal corresponds to the first DC voltage signal one by one.

[0106] In some embodiments, the electronic control device is connected to the voltage monitoring isolation module.

[0107] Step S110 may specifically include:

[0108] Receive multiple first DC voltage signals sent by the voltage monitoring isolation module, wherein the multiple first DC voltage signals are obtained by the voltage monitoring isolation module according to the AC input voltage signals collected by multiple voltage collectors, and the peak value of each DC voltage signal in the multiple first DC voltage signals is less than 20V.

[0109] That is to say, the voltage monitoring isolation module is used to receive multiple AC input voltage signals collected by multiple voltage collectors, and convert the multiple AC input voltage signals into multiple DC voltage signals, and output them to the electronic control device. At the same time, multiple voltage collectors can correspond to multiple AC input voltage signals one by one.

[0110] The specific transformation principle of the voltage monitoring isolation module will be introduced below.

[0111] It should be noted that the multiple first DC voltage signals can be converted from multiple AC input voltage signals collected by multiple voltage collectors at the same time. The electronic control device can receive multiple first DC voltage signals sent by the voltage monitoring isolation module at the same time. The multiple AC input voltage signals can be AC ​​output voltage signals of a multi-phase AC power supply, that is, the voltage collector specifically collects the AC output voltage signal of the multi-phase AC power supply.

[0112] The specific number of AC input voltage signals collected by the voltage collector can be set according to actual conditions and is not limited here. For example, the number of AC input voltage signals can be 2, 3, 4, etc.

[0113] For example, the first DC voltage signal provided in the embodiment of the present application is as follows: Figure 2 As shown in X1 in the figure, the AC input voltage signal is as follows Figure 2 As shown in X2 in the figure. Figure 2 The horizontal axis represents time, and the vertical axis represents voltage.

[0114] In step S120, after acquiring the plurality of first DC voltage signals, the electronic control device may further generate first state information of the DC voltage signal set according to a first peak value corresponding to each of the plurality of first DC voltage signals.

[0115] The first peak value may be a voltage peak value of the first DC voltage signal. Exemplarily, the first peak values ​​of the plurality of first DC voltage signals are all equal, and the first peak values ​​of different first DC voltage signals in the plurality of first DC voltage signals correspond to different times.

[0116] The DC voltage signal set may include a second DC voltage signal and at least one third DC voltage signal. The second DC voltage signal may be any one of the first DC voltage signals; the third DC voltage signal may be a first DC voltage signal whose first peak value is between two adjacent second peak values ​​of the second DC voltage signal; and the second peak value may be a voltage peak value of the second DC voltage signal.

[0117] The first state information may include multiple first frequencies, multiple first phase differences and multiple first voltage amplitudes, the first frequency is the frequency of the DC voltage signal in the DC voltage signal set, the first phase difference is the phase difference between two adjacent DC voltage signals in the DC voltage signal set, and the first frequency is the voltage amplitude of the DC voltage signal in the DC voltage signal set.

[0118] That is to say, the first frequency may be the frequency of the second DC voltage signal or the third DC voltage signal; the first phase difference may be the phase difference between two adjacent third DC voltage signals, or the phase difference between the second DC voltage signal and its adjacent third DC voltage signal; the first voltage amplitude may be the voltage amplitude of the second DC voltage signal or the third DC voltage signal.

[0119] In some embodiments, the first state information includes a plurality of first frequencies, a plurality of first phase differences, and a plurality of first voltage amplitudes, the first frequency being the frequency of the DC voltage signal in the DC voltage signal set, the first phase difference being the phase difference between two adjacent DC voltage signals in the DC voltage signal set, and the first frequency being the voltage amplitude of the DC voltage signal in the DC voltage signal set;

[0120] Step S120 specifically includes:

[0121] Determine a second DC voltage signal from the plurality of first DC voltage signals, the second DC voltage signal comprising a plurality of adjacent second peak values;

[0122] Determine a first DC voltage signal whose first peak value is between two adjacent second peak values ​​as a third DC voltage signal to obtain at least one third DC voltage signal;

[0123] generating a DC voltage signal set according to the second DC voltage signal and at least one third DC voltage signal;

[0124] According to the DC voltage signal set, a plurality of first frequencies, a plurality of first phase differences and a plurality of first voltage amplitudes corresponding thereto are determined.

[0125] Exemplarily, the second DC voltage signal may be randomly determined from a plurality of first DC voltage signals, that is, any first DC voltage signal among the plurality of first DC voltage signals may be determined as the second DC voltage signal.

[0126] Specifically, a second DC voltage signal is first randomly determined from multiple first DC voltage signals; then, after the second DC voltage signal reaches the second peak, the first DC voltage signal that first reaches the first peak is used as the third DC voltage signal; after the second DC voltage signal reaches the second peak, the first DC voltage signal that sequentially reaches the first peak is used as the third DC voltage signal, and so on, until the second DC voltage signal reaches the second peak again, at least one third DC voltage signal is obtained, and then the second DC voltage signal and at least one third DC voltage signal are synthesized into a DC voltage signal set; and then, based on the DC voltage signal set, its corresponding multiple first frequencies, multiple first phase differences and multiple first voltage amplitudes are determined.

[0127] For example, Figure 3 As shown, the plurality of first DC voltage signals include a first DC voltage signal Y1, a first DC voltage signal Y2 and a first DC voltage signal Y3, and the first DC voltage signal Y1 is determined as the second DC voltage signal. After the second DC voltage signal (i.e., the first DC voltage signal Y1) reaches the second peak, the first DC voltage signal Y2 that reaches the first peak first is used as the third DC voltage signal; after the second DC voltage signal (i.e., the first DC voltage signal Y1) reaches the second peak, the first DC voltage signal Y3 that reaches the first peak second in sequence is used as the third DC voltage signal, and when the second DC voltage signal (i.e., the first DC voltage signal Y1) reaches the second peak again, the AC input phase sequence identification is completed, that is, the first DC voltage signal Y1, the first DC voltage signal Y2 and the first DC voltage signal Y3 are determined as a DC voltage signal set, and then the first frequencies corresponding to the first DC voltage signal Y1, the first DC voltage signal Y2 and the first DC voltage signal Y3, the first phase difference between the first DC voltage signal Y1 and the first DC voltage signal Y2, the first phase difference between the first DC voltage signal Y2 and the first DC voltage signal Y3, and the first voltage amplitudes corresponding to the first DC voltage signal Y1, the first DC voltage signal Y2 and the first DC voltage signal Y3 are determined. Figure 3 The horizontal and vertical axes are time, and the vertical axes are voltage.

[0128] In step S130, after the electronic control device generates the first state information of the DC voltage signal set according to the first peak value corresponding to each first DC voltage signal in the plurality of first DC voltage signals, it may also verify the first state information to obtain a verification result.

[0129] The verification results include passed or failed.

[0130] In some embodiments, the first state information includes a plurality of first frequencies, a plurality of first phase differences, and a plurality of first voltage amplitudes, the first frequency being the frequency of the DC voltage signal in the DC voltage signal set, the first phase difference being the phase difference between two adjacent DC voltage signals in the DC voltage signal set, and the first frequency being the voltage amplitude of the DC voltage signal in the DC voltage signal set;

[0131] Step S130 specifically includes:

[0132] Acquire second state information corresponding to the target DC voltage signal set, the second state information including multiple second frequencies, multiple second phase differences and multiple second voltage amplitudes, the second frequency is the frequency of the DC voltage signal in the target DC voltage signal set, the second phase difference is the phase difference between two adjacent target DC voltage signals in the target DC voltage signal set; the second voltage amplitude is the voltage amplitude of the DC voltage signal in the target DC voltage signal set;

[0133] When the plurality of first frequencies and the plurality of second frequencies are identical in one-to-one correspondence, the plurality of first phase differences and the plurality of second phase differences are identical in one-to-one correspondence, and the plurality of first voltage amplitudes and the plurality of second voltage amplitudes are identical in one-to-one correspondence, determining that the verification result is verification passed;

[0134] When at least one first frequency is different from its corresponding second frequency, and / or at least one first phase difference is different from its corresponding second phase difference, and / or at least one first voltage amplitude is different from its corresponding second voltage amplitude, the verification result is determined to be verification failure.

[0135] The target DC voltage signal set may include a fourth DC voltage signal and at least one fifth DC voltage signal. The fourth DC voltage signal may be any one of the first DC voltage signals; the fifth DC voltage signal may be a first DC voltage signal whose first peak value is between two adjacent third peak values ​​of the fourth DC voltage signal; and the third peak value may be a voltage peak value of the fourth DC voltage signal.

[0136] That is to say, the second frequency may be the frequency of the fourth DC voltage signal or the fifth DC voltage signal; the second phase difference may be the phase difference between two adjacent fifth DC voltage signals, or the phase difference between the fourth DC voltage signal and its adjacent fifth DC voltage signal; the second voltage amplitude may be the voltage amplitude of the fourth DC voltage signal or the fifth DC voltage signal.

[0137] It should be noted that the second DC voltage signal may be the same as or different from the fourth DC voltage signal, which is not limited here.

[0138] In some examples, obtaining second state information corresponding to the target DC voltage signal set may include:

[0139] Determining a fourth DC voltage signal from the plurality of first DC voltage signals, the fourth DC voltage signal comprising a plurality of adjacent third peaks;

[0140] Determine the first DC voltage signal whose first peak value is between two adjacent third peak values ​​as a fifth DC voltage signal to obtain at least one fifth DC voltage signal;

[0141] generating a target DC voltage signal set according to the fourth DC voltage signal and at least one fifth DC voltage signal;

[0142] According to the target DC voltage signal set, a plurality of second frequencies, a plurality of second phase differences and a plurality of second voltage amplitudes corresponding thereto are determined.

[0143] The fourth DC voltage signal may be randomly determined from the plurality of first DC voltage signals.

[0144] The specific implementation of determining multiple second frequencies, multiple second phase differences, and multiple second voltage amplitudes is similar to the specific implementation of determining multiple first frequencies, multiple first phase differences, and multiple second voltage amplitudes, and will not be repeated here.

[0145] In other examples, the second state information corresponding to the target DC voltage signal set may be pre-stored in the electronic control device for subsequent direct call.

[0146] Exemplarily, the DC voltage signal set includes a second DC voltage signal Y1, a third DC voltage signal Y2 and a third DC voltage signal Y3; the target DC voltage signal set includes a fourth DC voltage signal Y1', a fifth DC voltage signal Y2' and a fifth DC voltage signal Y3'; the second DC voltage signal Y1 corresponds to the fourth DC voltage signal Y1', the third DC voltage signal Y2 corresponds to the fifth DC voltage signal Y2', and the third DC voltage signal Y3 corresponds to the fifth DC voltage signal Y3'. In the case where a first frequency corresponding to the second DC voltage signal Y1 is the same as a second frequency corresponding to the fourth DC voltage signal Y1', a first frequency corresponding to the third DC voltage signal Y2 is the same as a second frequency corresponding to the fifth DC voltage signal Y2', a first frequency corresponding to the second DC voltage signal Y3 is the same as a second frequency corresponding to the fifth DC voltage signal Y3', a first phase difference between the second DC voltage signal Y1 and the third DC voltage signal Y2 is the same as a second phase difference between the fourth DC voltage signal Y1' and the fifth DC voltage signal Y2', a first phase difference between the third DC voltage signal Y2 and the third DC voltage signal Y3 is the same as a second phase difference between the fifth DC voltage signal Y2' and the fifth DC voltage signal Y3', and a first voltage amplitude corresponding to the second DC voltage signal Y1 is the same as a second voltage amplitude corresponding to the fourth DC voltage signal Y1', a first voltage amplitude corresponding to the third DC voltage signal Y2 is the same as a second voltage amplitude corresponding to the fifth DC voltage signal Y2', and a first voltage amplitude corresponding to the second DC voltage signal Y3 is the same as a second voltage amplitude corresponding to the fifth DC voltage signal Y3', the verification result is determined to be verification passed; otherwise, the verification result is determined to be verification failed.

[0147] In step S140, after verifying the first state information and obtaining the verification result, the electronic control device may also output a phase sequence trigger signal according to the verification result and the first state information, and the phase sequence trigger signal is used to trigger the thyristor to turn on or off.

[0148] The phase sequence trigger signal may include a plurality of pulse signals.

[0149] In some implementations, step S140 specifically includes:

[0150] When the verification result includes verification passed, outputting a phase sequence trigger signal according to the first state information;

[0151] Alternatively, when the verification result includes verification failure, steps S120 to S130 are repeatedly performed until the verification result includes verification pass, and a phase sequence trigger signal is output according to the first state information obtained after the cycle.

[0152] The frequency of the phase sequence trigger signal is a first frequency, and the voltage amplitude of the phase sequence trigger signal is a first voltage amplitude.

[0153] In some implementations, after step S140, the method further includes:

[0154] Stores phase sequence trigger signal.

[0155] In this implementation, a phase sequence trigger signal is provided for storage, so that the phase sequence trigger signal can be directly called later.

[0156] In the embodiment of the present application, through the phase-detection recognition technology of voltage peak measurement, the phase sequence relationship is automatically identified, the phase sequence relationship is automatically located, and the trigger pulse is automatically sent to the corresponding bridge arm thyristor according to the adaptive phase sequence relationship, so as to realize phase sequence adaptive control and avoid misoperation of phase sequence connection during construction; through software digital phase-locked technology and control logic, a trigger pulse with good consistency is obtained to make the symmetry effect better; the embodiment of the present application is easy to operate, greatly improves the connection efficiency, reduces maintenance costs, and improves the reliability and safety level of multi-AC input thyristor power supplies.

[0157] It should be noted that the above-mentioned method for determining the phase sequence trigger signal can be executed when all the corresponding thyristors are turned off.

[0158] In the embodiment of the present application, upon receiving multiple first DC voltage signals, the electronic control device automatically identifies the phase sequence relationship, automatically locates the phase sequence relationship, and automatically sends a trigger pulse to the corresponding bridge arm thyristor according to the adaptive phase sequence relationship through the phase detection and recognition technology of voltage peak measurement, thereby realizing phase sequence adaptive control. This can improve or solve the problems of complex construction, high requirements for technicians, and high operation and maintenance costs during the application of thyristor power supplies.

[0159] Based on the same inventive concept, an embodiment of the present application further provides a method for determining an abnormal type of an AC input voltage signal. The method for determining an abnormal type of an AC input voltage signal provided by an embodiment of the present application is described below in conjunction with the accompanying drawings.

[0160] Example 2

[0161] The method for determining the abnormal type of an AC input voltage signal provided in the embodiment of the present application can be applied to an electronic control device, and can be executed by an electronic control device, an AC input voltage signal abnormal type determination device, and an AC input voltage signal abnormal type determination system. The following is an example of the AC input voltage signal abnormal type being executed by an electronic control device.

[0162] like Figure 4 As shown, the method for determining the abnormal type of an AC input voltage signal provided in an embodiment of the present application may include steps S410 to S420.

[0163] S410. According to the phase sequence trigger signal determination method of any one of Embodiment 1, a phase sequence trigger signal is output, and the phase sequence trigger signal corresponds to first state information, and the first state information includes multiple first frequencies, multiple first phase differences, and multiple first voltage amplitudes.

[0164] S420: Determine the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal according to the multiple first frequencies, the multiple first phase differences, and the multiple first voltage amplitudes.

[0165] According to the method for determining the abnormal type of the AC input voltage signal provided in an embodiment of the present application, by comprehensively considering multiple first frequencies, multiple first phase differences and multiple first voltage amplitudes, the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal can be accurately determined.

[0166] For the specific implementation of step S410, please refer to the relevant description of Example 1, which will not be repeated here.

[0167] In step S420, the abnormality type may include at least one of harmonics, phase loss, and voltage instability.

[0168] In some embodiments, determining the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal according to the plurality of first frequencies, the plurality of first phase differences, and the plurality of first voltage amplitudes may include:

[0169] In the case that at least two of the multiple first frequencies are different, determining that the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is harmonic;

[0170] Alternatively, when at least one first phase difference among the multiple first phase differences is twice another first phase difference, determining that the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is phase loss;

[0171] Alternatively, if at least one of the multiple first voltage amplitudes is greater than 1.1 times of another first voltage amplitude, it is determined that the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is voltage instability.

[0172] That is to say, since the effective component of the AC input voltage signal is a single frequency of the industrial frequency, any component different from the industrial frequency can be called a harmonic; in a system with multiple AC input voltage signals, the phase difference of each AC input voltage signal should be consistent, and the sum of the phase differences is equal to 360 degrees. If the phase difference (that is, the first phase difference) corresponding to two adjacent AC input voltage signals is twice that of the other phase differences, it is judged that there is a missing AC input voltage signal, that is, a phase loss; if the rated voltage value (that is, the first voltage amplitude) fluctuates by more than 10%, it is voltage instability.

[0173] Exemplarily, if multiple first frequencies include 50Hz, 50Hz and 60Hz, then the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is determined to be harmonic; if multiple first phase differences include 120 degrees, 0 degrees and 240 degrees, then the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is determined to be phase loss; if multiple first voltage amplitudes include 15V, 15V and 17V, then the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is determined to be voltage instability.

[0174] In the embodiment of the present application, the abnormal type of the AC input voltage signal can be determined through the above implementation, thereby simplifying the installation and adjustment work.

[0175] Based on the same inventive concept, an embodiment of the present application further provides a phase sequence trigger signal determination device. The phase sequence trigger signal determination device provided in the embodiment of the present application is described below in conjunction with the accompanying drawings.

[0176] Example 3

[0177] The phase sequence trigger signal determination device provided in the embodiment of the present application can be applied to an electronic control device.

[0178] like Figure 5 As shown, the phase sequence trigger signal determination device 500 provided in the embodiment of the present application may include a first acquisition module 510 , a generation module 520 , a verification module 530 and an output module 540 .

[0179] The first acquisition module 510 is used to acquire a plurality of first DC voltage signals corresponding to the plurality of AC input voltage signals, wherein the frequencies of any two first DC voltage signals are the same, and each of the plurality of first DC voltage signals fluctuates periodically;

[0180] A generating module 520, configured to generate first state information of a DC voltage signal set according to a first peak value corresponding to each first DC voltage signal among a plurality of first DC voltage signals;

[0181] A verification module 530, configured to verify the first state information and obtain a verification result;

[0182] The output module 540 is used to output a phase sequence trigger signal according to the verification result and the first state information, and the phase sequence trigger signal is used to trigger the thyristor to turn on or off.

[0183] According to the phase sequence trigger signal determination device provided in the embodiment of the present application, by obtaining multiple first DC voltage signals corresponding to multiple AC input signals one by one, then according to the first peak value corresponding to each first DC voltage signal in the multiple first DC voltage signals, the first state information of the DC voltage signal set is generated, and then the first state information is verified to obtain the verification result, and then according to the verification result and the first state information, the phase sequence trigger signal is output. That is to say, on the one hand, in the embodiment of the present application, by automatically verifying the first state information to obtain the verification result, the multiple AC input signals corresponding to the first state information can be identified without the participation of technical personnel (completed directly by the equipment), thereby reducing the requirements for technical personnel and improving the recognition efficiency of AC input signals; on the other hand, through the verification result and the first state information, the phase sequence trigger signal can be automatically output, thereby improving or avoiding the problem of phase sequence connection misoperation when manually connecting to the corresponding thyristor link.

[0184] In some embodiments, the electronic control device is connected to the voltage monitoring isolation module;

[0185] The first acquisition module 510 is specifically used for:

[0186] Receive multiple first DC voltage signals sent by the voltage monitoring isolation module, wherein the multiple first DC voltage signals are obtained by the voltage monitoring isolation module according to the AC input voltage signals collected by multiple voltage collectors, and the peak value of each DC voltage signal in the multiple first DC voltage signals is less than 20V.

[0187] In some embodiments, the first state information includes a plurality of first frequencies, a plurality of first phase differences, and a plurality of first voltage amplitudes, the first frequency being the frequency of the DC voltage signal in the DC voltage signal set, the first phase difference being the phase difference between two adjacent DC voltage signals in the DC voltage signal set, and the first frequency being the voltage amplitude of the DC voltage signal in the DC voltage signal set;

[0188] The generating module 520 is specifically used for:

[0189] Determine a second DC voltage signal from the plurality of first DC voltage signals, the second DC voltage signal comprising a plurality of adjacent second peak values;

[0190] Determine a first DC voltage signal whose first peak value is between two adjacent second peak values ​​as a third DC voltage signal to obtain at least one third DC voltage signal;

[0191] generating a DC voltage signal set according to the second DC voltage signal and at least one third DC voltage signal;

[0192] According to the DC voltage signal set, a plurality of first frequencies, a plurality of first phase differences and a plurality of first voltage amplitudes corresponding thereto are determined.

[0193] In some implementations, the generating module 520 may be specifically configured to:

[0194] Determining a fourth DC voltage signal from the plurality of first DC voltage signals, the fourth DC voltage signal comprising a plurality of adjacent third peaks;

[0195] Determine the first DC voltage signal whose first peak value is between two adjacent third peak values ​​as a fifth DC voltage signal to obtain at least one fifth DC voltage signal;

[0196] generating a target DC voltage signal set according to the fourth DC voltage signal and at least one fifth DC voltage signal;

[0197] According to the target DC voltage signal set, a plurality of second frequencies, a plurality of second phase differences and a plurality of second voltage amplitudes corresponding thereto are determined.

[0198] In some embodiments, the first state information includes a plurality of first frequencies, a plurality of first phase differences, and a plurality of first voltage amplitudes, the first frequency being the frequency of the DC voltage signal in the DC voltage signal set, the first phase difference being the phase difference between two adjacent DC voltage signals in the DC voltage signal set, and the first frequency being the voltage amplitude of the DC voltage signal in the DC voltage signal set;

[0199] The verification module 530 is specifically used for:

[0200] Obtain second state information corresponding to the target DC voltage signal set, the second state information including multiple second frequencies, multiple second phase differences and multiple second voltage amplitudes, the second frequency is the frequency of the DC voltage signal in the target DC voltage signal set, the second phase difference is the phase difference between two adjacent target DC voltage signals in the target DC voltage signal set; the second voltage amplitude is the voltage amplitude of the DC voltage signal in the target DC voltage signal set; when multiple first frequencies and multiple second frequencies are identical in one-to-one correspondence, multiple first phase differences and multiple second phase differences are identical in one-to-one, and multiple first voltage amplitudes and multiple second voltage amplitudes are identical in one-to-one correspondence, determine that the verification result is passed;

[0201] When at least one first frequency is different from its corresponding second frequency, and / or at least one first phase difference is different from its corresponding second phase difference, and / or at least one first voltage amplitude is different from its corresponding second voltage amplitude, the verification result is determined to be verification failure.

[0202] In some implementations, the phase sequence trigger signal determination device 500 may further include:

[0203] The storage module is used to store the phase sequence trigger signal.

[0204] The phase sequence trigger signal determination device provided in the embodiment of the present application can be used to execute the phase sequence trigger signal determination method, that is, it has the beneficial effects and implementation methods of the phase sequence trigger signal determination method provided in Example 1 of the present application. For details, please refer to the specific description of the phase sequence trigger signal determination method in the above Example 1, and this embodiment will not be repeated here.

[0205] Based on the same inventive concept, an embodiment of the present application further provides a system for determining an abnormal type of an AC input voltage signal. The system for determining an abnormal type of an AC input voltage signal provided by the embodiment of the present application is described below in conjunction with the accompanying drawings.

[0206] Example 4

[0207] The system for determining the abnormal type of an AC input voltage signal provided in the embodiment of the present application can be applied to an electronic control device.

[0208] like Figure 6 As shown, the voltage signal abnormality type determination system 100 provided in the embodiment of the present application may include the phase sequence trigger signal determination device 500 and the AC input voltage signal abnormality type determination device 600 of any one of the embodiments 3.

[0209] The phase sequence trigger signal determination device 500 is used to output a phase sequence trigger signal, the phase sequence trigger signal corresponds to first state information, and the first state information includes a plurality of first frequencies, a plurality of first phase differences, and a plurality of first voltage amplitudes;

[0210] The AC input voltage signal abnormality type determining device 600 is connected to the phase sequence trigger signal determining device 500, and is used to determine the abnormality type of the AC input voltage signal corresponding to the phase sequence trigger signal based on multiple first frequencies, multiple first phase differences and multiple first voltage amplitudes.

[0211] In some implementations, the AC input voltage signal abnormality type determination device 600 is specifically configured to:

[0212] Determining the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal according to the plurality of first frequencies, the plurality of first phase differences, and the plurality of first voltage amplitudes may include:

[0213] In the case that at least two of the multiple first frequencies are different, determining that the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is harmonic;

[0214] Alternatively, when at least one first phase difference among the multiple first phase differences is twice another first phase difference, determining that the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is phase loss;

[0215] Alternatively, if at least one of the multiple first voltage amplitudes is greater than 1.1 times of another first voltage amplitude, it is determined that the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is voltage instability.

[0216] The AC input voltage signal abnormality type determination system provided in the embodiment of the present application can be used to execute the AC input voltage signal abnormality type determination method, that is, it has the beneficial effects and implementation methods of the AC input voltage signal abnormality type determination method provided in Example 2 of the present application. For details, please refer to the specific description of the AC input voltage signal abnormality type determination method in the above Example 2, which will not be repeated in this embodiment.

[0217] Based on the same inventive concept, an embodiment of the present application further provides a phase sequence trigger signal determination device. The phase sequence trigger signal determination device provided in the embodiment of the present application is described below in conjunction with the accompanying drawings.

[0218] Example 5

[0219] The phase sequence trigger signal determination device provided in the embodiment of the present application can be applied to an electronic control device, and the electronic control device can be a rectifier power supply control system of a thyristor, such as Figure 7 As shown, the phase sequence trigger signal determination device 10 may include:

[0220] A plurality of voltage collectors 11, each of the plurality of voltage collectors 11 is used to collect a corresponding AC input voltage signal to obtain a plurality of AC input voltage signals;

[0221] The voltage monitoring isolation module 12 is connected to the multiple voltage collectors 11 respectively, and is used to convert each of the multiple AC input voltage signals into a first DC voltage signal with periodic fluctuations to obtain multiple first DC voltage signals;

[0222] The electronic control device 13 is connected to the voltage monitoring isolation module 12 and is used to execute the phase sequence trigger signal determination method as described in any one of the first embodiments.

[0223] According to the phase sequence trigger signal determination device provided in the embodiment of the present application, on the one hand, by automatically verifying the first state information, a verification result is obtained, and then multiple AC input signals corresponding to the first state information can be identified without the participation of technical personnel (completed directly by the device), thereby reducing the requirements for technical personnel and improving the recognition efficiency of AC input signals; on the other hand, through the verification result and the first state information, the phase sequence trigger signal can be automatically output, thereby improving or avoiding the problem of phase sequence connection erroneous operation when manually accessing the corresponding thyristor link.

[0224] In some embodiments, each of the plurality of voltage collectors activates a fuse protection effect when the current reaches 0.1 A or the voltage peak reaches 1000 V to protect the electronic control device.

[0225] Specifically, each of the multiple voltage collectors can be used to collect voltage signals of multiple AC inputs AC1 to ACN, and output AC input voltage signals according to the voltage signals, which are equal to the AC input voltage signals in real time, that is, the amplitude and size are equal. The voltage collector activates the fuse protection effect when the current reaches 0.1 ampere or the voltage peak reaches 1000V, so that the electronic control device is isolated from the AC main circuit, thereby protecting the electronic control device.

[0226] Exemplarily, the voltage monitoring isolation module 12 can be connected to multiple voltage collectors 11 respectively through wires, that is, a corresponding number of voltage collectors 11 are equipped for a multi-AC input thyristor power supply device, and the AC signal output by the voltage collector 11 is connected to the voltage monitoring isolation module 12 by wires.

[0227] Exemplarily, the voltage monitoring isolation module 12 can be used to isolate the AC input voltage signal from the electronic control device 13, and convert the AC input voltage signal into a first DC voltage signal with a peak value less than 20V for output.

[0228] In some embodiments, the voltage monitoring isolation module 12 may include:

[0229] A conversion circuit, for converting each of the multiple AC input voltage signals into an initial voltage signal to obtain multiple initial voltage signals, wherein the peak value of the initial voltage signal is less than 20V;

[0230] A first operational amplifier circuit is connected to the conversion circuit and is used for performing equivalent isolation and following on each of the multiple initial voltage signals to obtain a following voltage signal, thereby obtaining multiple following voltage signals;

[0231] The second operational amplifier circuit is connected to the first operational amplifier circuit, and is used for performing voltage translation and raising on each of the multiple follower voltage signals to obtain a first DC voltage signal, so as to obtain multiple first DC voltage signals.

[0232] That is to say, the input voltage (i.e., each of the multiple AC input voltage signals) is converted in proportion by means of resistance voltage division, and the peak-to-peak value is less than 20V. The voltage is equivalently isolated and followed by the operational amplifier circuit (i.e., the first operational amplifier circuit), and then the AC signal (i.e., the following voltage signal) is voltage-shifted and raised by the operational amplifier circuit (the second operational amplifier circuit) to achieve positive voltage fluctuation values, that is, a DC voltage signal with periodic fluctuations is obtained, and the peak-to-peak value of the voltage is less than 20V.

[0233] Exemplarily, the conversion circuit may include an alternating current / direct current (A / D) conversion circuit, and the first operational amplifier circuit and the second operational amplifier circuit may both include an operational amplifier isolation circuit.

[0234] Exemplarily, the electronic control device 13 may also include a digital signal processor (DSP) computing unit, a digital circuit power supply circuit, and a pulse width modulation (PWM) trigger circuit.

[0235] It should be noted that the conversion circuit, the first operational amplifier circuit and the second operational amplifier circuit in the embodiment of the present application may be circuits in the prior art that can realize the above-mentioned corresponding functions, and are not limited here.

[0236] In some embodiments, the monitoring conversion rate of the electronic control device is 12.5 M / s, the phase shift resolution of the electronic control device is 0.0036°, the time accuracy of the electronic control device is 0.2 us, and the asymmetry of the electronic control device is less than or equal to 0.1°.

[0237] In this embodiment, the electronic control device 13 monitors the conversion rate of 12.5M / S, that is, 12.5M times per second. Taking the AC input of the industrial frequency signal as an example, the AC input phase shift resolution reaches 0.0036°, corresponding to a time of 0.2us, which can accurately control the thyristor triggering, and the asymmetry is ≤0.1° to ensure the stable output of the equipment. The phase difference is calculated by using the over-peak value and frequency of the multiple AC inputs, and the phase difference is divided into the time difference, which can accurately control the thyristor triggering.

[0238] The phase sequence trigger signal determination device provided in the embodiment of the present application can be used to execute the phase sequence trigger signal determination method, that is, it has the beneficial effects and implementation methods of the phase sequence trigger signal determination method provided in Example 1 of the present application. For details, please refer to the specific description of the phase sequence trigger signal determination method in the above Example 1, and this embodiment will not be repeated here.

[0239] Based on the same inventive concept, an embodiment of the present application further provides a phase sequence trigger signal determination system. The phase sequence trigger signal determination system provided by the embodiment of the present application is described below in conjunction with the accompanying drawings.

[0240] Example 6

[0241] like Figure 8 As shown, the phase sequence trigger signal determination system 1 provided in the embodiment of the present application may include:

[0242] The thyristor bridge arm 20 includes a plurality of thyristor rectifier matrices 21, each of the plurality of thyristor rectifier matrices 21 includes a plurality of unit groups 211 connected in series, each of the plurality of unit groups 211 includes a first thyristor M1 and a second thyristor M2 connected in series, and the turn-on signals of the gate electrodes G of the first thyristor M1 and the second thyristor M2 are different;

[0243] As the phase sequence trigger signal determination device 10 of any one of Embodiment 5, the phase sequence trigger signal determination device comprises an electronic control device 13 and a plurality of voltage collectors 11;

[0244] Each of the multiple voltage collectors 11 is connected to the first pole of the first thyristor M1 of each unit group 211 in the corresponding thyristor rectifier matrix 21, and the second pole of the second thyristor M2, and is used to provide an AC input voltage signal to the first pole of the first thyristor M1 of each unit group 211 in the corresponding thyristor rectifier matrix 21, and the second pole of the second thyristor M2;

[0245] The electronic control device 13 is connected to the first thyristor M1 and the second thyristor M2 in each unit group 211 of each thyristor rectifier matrix 21, and is used to output a phase sequence trigger signal to control the first thyristor M1 and the second thyristor M2 in each unit group 211 of each thyristor rectifier matrix 21 to turn on or off.

[0246] Wherein, the phase sequence trigger signal includes a plurality of different pulse signals, the first thyristor M1 in the same thyristor rectifier matrix 21 shares the same pulse signal, the second thyristor M2 in the same thyristor rectifier matrix 21 shares the same pulse signal, the first thyristor M1 and the second thyristor M2 in the same thyristor rectifier matrix 21 receive different pulse signals, the first thyristor M1 in different thyristor rectifier matrices 21 receive different pulse signals, and the second thyristor M2 in different thyristor rectifier matrices 21 receive different pulse signals;

[0247] The thyristor bridge arm 20 is used to rectify the AC input voltage signal.

[0248] Exemplarily, the turn-on signal of the gate electrode G of the first thyristor M1 is high level, and the turn-on signal of the gate electrode G of the second thyristor M2 is low level. The first electrode of the first thyristor M1 can be an anode, and the second electrode can be a cathode; the first electrode of the second thyristor M2 can be an anode, and the second electrode can be a cathode.

[0249] Exemplarily, each voltage collector 11 may be connected to a plurality of unit groups 211 to increase the output power of the thyristor device.

[0250] Exemplarily, the A electrode of the cell group 211 is a negative electrode, the K electrode is a positive electrode, the positive electrode of the cell group 211 is connected to the positive DC output, and the negative electrode of the cell group 211 is connected to the negative DC output.

[0251] Exemplarily, the timing trigger signal includes pulse 1 to pulse 6. The first thyristor M1 in the first thyristor rectifier matrix 21 shares pulse 1, and the second thyristor M2 shares pulse 2, where pulse 1 is a positive polarity pulse and pulse 2 is a negative polarity pulse. The first thyristor M1 in the second thyristor rectifier matrix 21 shares pulse 3, and the second thyristor M2 shares pulse 4, where pulse 2 is a positive polarity pulse and pulse 4 is a negative polarity pulse. The first thyristor M1 in the third thyristor rectifier matrix 21 shares pulse 5, and the second thyristor M2 shares pulse 6, where pulse 5 is a positive polarity pulse and pulse 6 is a negative polarity pulse. Pulses 1 to 6 are all different.

[0252] It should be noted that Figure 8 The AC input AC1 to AC input AC3 can be an AC source input and can also be used as the AC input of the voltage collector 11; the voltage collector 11 transmits a DC fluctuation signal to the electronic control device 13, which corresponds to the first DC voltage signal Y1 to the first DC voltage signal Y3 mentioned above.

[0253] In the embodiment of the present application, multiple AC inputs can be interconnected through the thyristor rectifier matrix 21, and the characteristics of thyristor unidirectional conduction and pulse triggered conduction are utilized. Through software digital phase-locked technology and control logic, sequential trigger pulses with good consistency are obtained, so that the symmetry effect is better.

[0254] In order to better understand the phase sequence trigger signal determination system provided in the embodiment of the present application, a more specific embodiment is described below.

[0255] like Figure 3 and Figure 8 As shown, the phase sequence trigger signal may include pulses 1 to 6. The voltage of the first DC voltage signal Y1 is the highest among the multiple first DC voltage signals during the time period t1 and t2, which can control Figure 8 The pulse 2 shown triggers the thyristor; the voltage of the first DC voltage signal Y1 is the lowest among the multiple first DC voltage signals during the time period t4 and t5, which can control Figure 8 The pulse 1 shown triggers the thyristor; in each trigger period, it is ensured that the positive and negative thyristors are in the triggered on state at the same time, that is, Figure 8As shown, each first DC voltage signal corresponds to a unit group 211, and a unit group 211 is triggered by two pulse signals. In the t1 period, pulse 2 controls the second thyristor M2 connected to the positive output of the unit group 211 in the first thyristor rectifier matrix 21 to be turned on together, and pulse 3 controls the first thyristor M1 connected to the negative output of the unit group 211 in the second thyristor rectifier matrix 21 to be turned on together. The main circuit can form a complete DC path. When the corresponding bridge arm thyristor is triggered to turn on at the peak state, the thyristor in the same polarity conduction state will automatically turn off, that is, it is ensured that only one group of thyristors is turned on in the same period. That is, in the same period, only one of the first thyristor M1 and the second thyristor M2 in the unit group 211 is turned on, and the other group of thyristors in the unit group 211 is turned off. Please refer to Table 1 for the truth table.

[0256] Table 1

[0257]

[0258]

[0259] It should be noted that "√" in Table 1 indicates outputting a pulse signal, "×" indicates not outputting a pulse signal, "-" indicates a negative polarity pulse, and "+" indicates a positive polarity pulse. For example, pulse 1 is output at t4 and t5, and pulse 1 is not output from t0 to t3, and from t6 to t7. The above Table 1 is for example only and is not intended to limit the present application.

[0260] The phase sequence trigger signal determination system provided in the embodiment of the present application can be used to execute the phase sequence trigger signal determination method, that is, it has the beneficial effects and implementation methods of the phase sequence trigger signal determination method provided in Example 1 of the present application. For details, please refer to the specific description of the phase sequence trigger signal determination method in the above Example 1, and this embodiment will not be repeated here.

[0261] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present application, but the present application is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of the present application, and these modifications and improvements are also considered to be within the scope of protection of the present application.

Claims

1. A method for determining a phase sequence trigger signal, characterized in that: Applied to an electronic control device, the method comprises: S110, acquiring a plurality of first DC voltage signals corresponding to the plurality of AC input voltage signals one by one, wherein the frequencies of any two of the first DC voltage signals are the same, and each of the plurality of first DC voltage signals fluctuates periodically; S120, generating first state information of a DC voltage signal set according to a first peak value corresponding to each first DC voltage signal among a plurality of first DC voltage signals; S130, verifying the first state information to obtain a verification result; S140. Output a phase sequence trigger signal according to the verification result and the first state information, where the phase sequence trigger signal is used to trigger the thyristor to turn on or off.

2. The method according to claim 1, characterized in that The electronic control device is connected to the voltage monitoring isolation module; Step S110 specifically includes: Receive multiple first DC voltage signals sent by the voltage monitoring isolation module, wherein the multiple first DC voltage signals are obtained by the voltage monitoring isolation module according to the AC input voltage signals collected by multiple voltage collectors, and the peak value of each DC voltage signal in the multiple first DC voltage signals is less than 20V.

3. The method according to claim 1, characterized in that The first state information includes a plurality of first frequencies, a plurality of first phase differences, and a plurality of first voltage amplitudes, wherein the first frequency is the frequency of the DC voltage signal in the DC voltage signal set, the first phase difference is the phase difference between two adjacent DC voltage signals in the DC voltage signal set, and the first frequency is the voltage amplitude of the DC voltage signal in the DC voltage signal set; Step S120 specifically includes: Determine a second DC voltage signal from the plurality of first DC voltage signals, the second DC voltage signal comprising a plurality of adjacent second peaks; Determine the first DC voltage signal whose first peak value is between two adjacent second peak values ​​as a third DC voltage signal to obtain at least one third DC voltage signal; generating a DC voltage signal set according to the second DC voltage signal and at least one third DC voltage signal; According to the DC voltage signal set, a plurality of first frequencies, a plurality of first phase differences and a plurality of first voltage amplitudes corresponding thereto are determined.

4. The method according to claim 1, characterized in that The first state information includes a plurality of first frequencies, a plurality of first phase differences, and a plurality of first voltage amplitudes, wherein the first frequency is the frequency of the DC voltage signal in the DC voltage signal set, the first phase difference is the phase difference between two adjacent DC voltage signals in the DC voltage signal set, and the first frequency is the voltage amplitude of the DC voltage signal in the DC voltage signal set; Step S130 specifically includes: Obtaining second state information corresponding to the target DC voltage signal set, wherein the second state information includes a plurality of second frequencies, a plurality of second phase differences, and a plurality of second voltage amplitudes, wherein the second frequency is the frequency of the DC voltage signal in the target DC voltage signal set, the second phase difference is the phase difference between two adjacent target DC voltage signals in the target DC voltage signal set; and the second voltage amplitude is the voltage amplitude of the DC voltage signal in the target DC voltage signal set; and when the plurality of first frequencies and the plurality of second frequencies are identical in one-to-one correspondence, the plurality of first phase differences and the plurality of second phase differences are identical in one-to-one correspondence, and the plurality of first voltage amplitudes and the plurality of second voltage amplitudes are identical in one-to-one correspondence, determining that the verification result is a verification pass; When at least one first frequency is different from its corresponding second frequency, and / or at least one first phase difference is different from its corresponding second phase difference, and / or at least one first voltage amplitude is different from its corresponding second voltage amplitude, the verification result is determined to be verification failure.

5. The method according to claim 4, characterized in that The obtaining of second state information corresponding to the target DC voltage signal set includes: Determining a fourth DC voltage signal from the plurality of first DC voltage signals, wherein the fourth DC voltage signal includes a plurality of adjacent third peak values; Determine the first DC voltage signal whose first peak value is between two adjacent third peak values ​​as a fifth DC voltage signal to obtain at least one fifth DC voltage signal; generating a target DC voltage signal set according to the fourth DC voltage signal and at least one fifth DC voltage signal; According to the target DC voltage signal set, a plurality of second frequencies, a plurality of second phase differences and a plurality of second voltage amplitudes corresponding thereto are determined.

6. The method according to any one of claims 1 to 5, characterized in that Step S140 specifically includes: When the verification result includes verification passed, outputting a phase sequence trigger signal according to the first state information; Alternatively, when the verification result includes verification failure, steps S120 to S130 are repeatedly performed until the verification result includes verification passing, and a phase sequence trigger signal is output according to the first state information obtained after the cycle; And / or, after step S140, the method further includes: Stores phase sequence trigger signal.

7. A method for determining an abnormal type of an AC input voltage signal, characterized in that: Applied to an electronic control device, the method comprises: The phase sequence trigger signal determination method according to any one of claims 1 to 6, outputting a phase sequence trigger signal, wherein the phase sequence trigger signal corresponds to first state information, and the first state information includes a plurality of first frequencies, a plurality of first phase differences, and a plurality of first voltage amplitudes; According to the plurality of first frequencies, the plurality of first phase differences and the plurality of first voltage amplitudes, the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is determined.

8. The method according to claim 7, characterized in that Determining the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal according to the plurality of first frequencies, the plurality of first phase differences, and the plurality of first voltage amplitudes includes: In a case where at least two of the multiple first frequencies are different, determining that the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is harmonic; Alternatively, when at least one first phase difference among the multiple first phase differences is twice another first phase difference, determining that the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is phase loss; Alternatively, if at least one first voltage amplitude among the multiple first voltage amplitudes is greater than 1.1 times of another first voltage amplitude, it is determined that the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is voltage instability.

9. A phase sequence trigger signal determination device, characterized in that: Applicable to an electronic control device, the device comprising: A first acquisition module is used to acquire a plurality of first DC voltage signals corresponding to the plurality of AC input voltage signals one by one, wherein the frequencies of any two first DC voltage signals are the same, and each of the plurality of first DC voltage signals fluctuates periodically; A generating module, configured to generate first state information of a DC voltage signal set according to a first peak value corresponding to each first DC voltage signal among a plurality of first DC voltage signals; A verification module, used to verify the first state information to obtain a verification result; The output module is used to output a phase sequence trigger signal according to the verification result and the first state information, and the phase sequence trigger signal is used to trigger the thyristor to turn on or off.

10. The device according to claim 9, characterized in that The electronic control device is connected to the voltage monitoring isolation module; The first acquisition module is specifically used to: Receive a plurality of first DC voltage signals sent by the voltage monitoring isolation module, wherein the plurality of first DC voltage signals are obtained by the voltage monitoring isolation module according to the conversion of AC input voltage signals collected by a plurality of voltage collectors, and the peak value of each DC voltage signal in the plurality of first DC voltage signals is less than 20V; And / or, the first state information includes a plurality of first frequencies, a plurality of first phase differences and a plurality of first voltage amplitudes, the first frequency being the frequency of the DC voltage signal in the DC voltage signal set, the first phase difference being the phase difference between two adjacent DC voltage signals in the DC voltage signal set, and the first frequency being the voltage amplitude of the DC voltage signal in the DC voltage signal set; The generating module is specifically used for: Determine a second DC voltage signal from the plurality of first DC voltage signals, the second DC voltage signal comprising a plurality of adjacent second peaks; Determine the first DC voltage signal whose first peak value is between two adjacent second peak values ​​as a third DC voltage signal to obtain at least one third DC voltage signal; generating a DC voltage signal set according to the second DC voltage signal and at least one third DC voltage signal; Determining, according to the DC voltage signal set, a plurality of first frequencies, a plurality of first phase differences, and a plurality of first voltage amplitudes corresponding thereto; And / or, the first state information includes a plurality of first frequencies, a plurality of first phase differences and a plurality of first voltage amplitudes, the first frequency being the frequency of the DC voltage signal in the DC voltage signal set, the first phase difference being the phase difference between two adjacent DC voltage signals in the DC voltage signal set, and the first frequency being the voltage amplitude of the DC voltage signal in the DC voltage signal set; The verification module is specifically used for: Obtaining second state information corresponding to the target DC voltage signal set, wherein the second state information includes a plurality of second frequencies, a plurality of second phase differences, and a plurality of second voltage amplitudes, wherein the second frequency is the frequency of the DC voltage signal in the target DC voltage signal set, the second phase difference is the phase difference between two adjacent target DC voltage signals in the target DC voltage signal set; and the second voltage amplitude is the voltage amplitude of the DC voltage signal in the target DC voltage signal set; and when the plurality of first frequencies and the plurality of second frequencies are identical in one-to-one correspondence, the plurality of first phase differences and the plurality of second phase differences are identical in one-to-one correspondence, and the plurality of first voltage amplitudes and the plurality of second voltage amplitudes are identical in one-to-one correspondence, determining that the verification result is a verification pass; When at least one first frequency is different from its corresponding second frequency, and / or at least one first phase difference is different from its corresponding second phase difference, and / or at least one first voltage amplitude is different from its corresponding second voltage amplitude, the verification result is determined to be verification failure.

11. A system for determining abnormal type of AC input voltage signal, characterized in that: Applied to an electronic control device, the system comprises: The phase sequence trigger signal determination device according to any one of claims 9 to 10, used to output a phase sequence trigger signal, the phase sequence trigger signal corresponding to first state information, the first state information comprising a plurality of first frequencies, a plurality of first phase differences and a plurality of first voltage amplitudes; The AC input voltage signal abnormality type determination device is connected to the phase sequence trigger signal determination device and is used to determine the abnormality type of the AC input voltage signal corresponding to the phase sequence trigger signal based on multiple first frequencies, multiple first phase differences and multiple first voltage amplitudes.

12. The system according to claim 11, characterized in that The AC input voltage signal abnormality type determination device is specifically used for: Determining the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal according to the plurality of first frequencies, the plurality of first phase differences, and the plurality of first voltage amplitudes includes: In a case where at least two of the multiple first frequencies are different, determining that the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is harmonic; Alternatively, when at least one first phase difference among the multiple first phase differences is twice another first phase difference, determining that the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is phase loss; Alternatively, if at least one first voltage amplitude among the multiple first voltage amplitudes is greater than 1.1 times of another first voltage amplitude, it is determined that the abnormal type of the AC input voltage signal corresponding to the phase sequence trigger signal is voltage instability.

13. A phase sequence trigger signal determination device, characterized in that: Applicable to an electronic control device, the electronic control device is a thyristor rectifier power supply control system, the device comprises: A plurality of voltage collectors, each of the plurality of voltage collectors is used to collect a corresponding AC input voltage signal to obtain a plurality of AC input voltage signals; A voltage monitoring isolation module is connected to the multiple voltage collectors respectively, and is used to convert each of the multiple AC input voltage signals into a first DC voltage signal with periodic fluctuations to obtain multiple first DC voltage signals; An electronic control device is connected to the voltage monitoring isolation module and is used to execute the phase sequence trigger signal determination method as described in any one of claims 1 to 6.

14. The device according to claim 13, characterized in that The voltage monitoring isolation module includes: A conversion circuit, for converting each of the multiple AC input voltage signals into an initial voltage signal to obtain multiple initial voltage signals, wherein the peak value of the initial voltage signal is less than 20V; A first operational amplifier circuit is connected to the conversion circuit and is used for performing equivalent isolation and following on each of the multiple initial voltage signals to obtain a following voltage signal, thereby obtaining multiple following voltage signals; A second operational amplifier circuit is connected to the first operational amplifier circuit, and is used for performing voltage translation and raising on each of the multiple follower voltage signals to obtain a first DC voltage signal, so as to obtain multiple first DC voltage signals; and / or, each of the plurality of voltage collectors activates a fuse protection effect when the current reaches 0.1A or the voltage peak reaches 1000V to protect the electronic control device; And / or, the monitoring conversion rate of the electronic control device is 12.5M / s, the phase shift resolution of the electronic control device is 0.0036°, the time accuracy of the electronic control device is 0.2us, and the asymmetry of the electronic control device is less than or equal to 0.1°.

15. A phase sequence trigger signal determination system, characterized in that: include: The thyristor bridge arm includes a plurality of thyristor rectifier matrices, each of the plurality of thyristor rectifier matrices includes a plurality of unit groups connected in series, each of the plurality of unit groups includes a first thyristor and a second thyristor connected in series, and the first thyristor and the second thyristor have different gate turn-on signals; The phase sequence trigger signal determination device according to any one of claims 13 to 14, wherein the phase sequence trigger signal determination device comprises an electronic control device and a plurality of voltage collectors; Each of the multiple voltage collectors is connected to the first pole of the first thyristor of each unit group in the corresponding thyristor rectifier matrix and the second pole of the second thyristor, and is used to provide an AC input voltage signal to the first pole of the first thyristor of each unit group in the corresponding thyristor rectifier matrix and the second pole of the second thyristor; an electronic control device connected to the first thyristor and the second thyristor in each unit group of each thyristor rectifier matrix, and used to output a phase sequence trigger signal to control the first thyristor and the second thyristor in each unit group of each thyristor rectifier matrix to turn on or off, Wherein, the phase sequence trigger signal includes a plurality of different pulse signals, the first thyristors in the same thyristor rectifier matrix share the same pulse signal, the second thyristors in the same thyristor rectifier matrix share the same pulse signal, the first thyristors and the second thyristors in the same thyristor rectifier matrix receive different pulse signals, the first thyristors in different thyristor rectifier matrices receive different pulse signals, and the second thyristors in different thyristor rectifier matrices receive different pulse signals; The thyristor bridge arm is used to rectify the AC input voltage signal.

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