Drive power management method, circuit, thyristor chip that can be turned off, and electronic device

Abstract

A driving power supply management method, circuit, turn-off thyristor chip and electronic device, belonging to the technical field of power supply management. The driving power supply management method is applied to a driving control circuit, and the driving control circuit includes a turn-on module and a turn-off module. Both the turn-on module and the turn-off module are connected to the gate of the turn-off thyristor to be driven and are used to control the turn-on and turn-off of the turn-off thyristor. The driving power supply management method includes: independently supplying power to the turn-on module through a turn-on circuit power supply management module, and independently supplying power to the turn-off module through a turn-off circuit power supply management module. The present application designs a driving power supply management method for a turn-off thyristor. By independently controlling the turn-on and turn-off of the turn-off thyristor, different turn-on and turn-off voltage configuration strategies can be realized according to different situation requirements, and it is applicable to applications under different working conditions.

Description

Technical Field

[0001] This application relates to the technical field of power management, and specifically to a driving power management method, circuit, turn-off thyristor chip, and electronic device for a turn-off thyristor. Background Art

[0002] Power semiconductor devices such as turn-off thyristors (including GTO, GCT, ETO, etc.) have been widely used in fields such as industrial variable frequency speed regulation, wind power grid connection, rail transit, and DC power transmission. Existing gate drives for turn-off thyristor devices (GTO, GCT, ETO, etc.) are as Figure 1 shown. Its circuit module mainly includes a power management circuit module, an on-module, an off-module, etc. And usually, the power management circuit supplies power to multiple modules such as the on-module, the maintenance module, and the off-module. After inputting a fixed total voltage to the drive circuit, different fixed voltages are configured for different modules through a fixed circuit design. For example, when inputting a drive voltage of 40V in total to the drive circuit, it is usually configured that the capacitor bank needs to be charged to a preset voltage threshold of 20V during the power-on startup process of the gate drive. However, this voltage is usually not adjustable. After the input level and the reference level are fixedly configured, a fixed value is output through a boost or buck circuit design (including the forward bias voltage of the on-circuit and the reverse bias voltage of the off-circuit).

[0003] At the same time, the bias voltages for turn-off and turn-on of the turn-off thyristor determine the turn-on and turn-off speeds of the thyristor, and also determine the turn-on and turn-off capacities. During the turn-on process, the forward bias voltage input by the power circuit to the on-circuit determines the turn-on speed of the thyristor wafer. The higher the forward bias voltage, the faster the turn-on speed, but it will increase the charging time of the on-circuit again. During the turn-off process, the reverse bias voltage input by the power circuit to the off-circuit determines the turn-off speed of the thyristor wafer. The higher the absolute value of the reverse bias voltage, the faster the turn-off speed, but it will increase the charging circuit of the off-circuit again. Generally speaking, a higher forward bias voltage for turn-on or a lower reverse bias voltage for turn-off can both improve the turn-on or turn-off performance of the turn-off thyristor, but it will reduce the operating frequency of the turn-off thyristor.

[0004] In summary, the current design of the drive circuit limits the application of turn-off thyristors under different working conditions. Existing devices such as modular multilevel converters, two-level converters, DC choppers, or DC energy-consuming devices may require the operating frequency of turn-off thyristors to vary from dozens of Hertz to hundreds of Hertz. However, the current existing drive power management circuit design method cannot meet the requirements of turn-off thyristors to adapt to different working conditions.

[0005] Therefore, there is an urgent need to develop a new driving power management method for turn-off thyristors to solve the current defects and deficiencies. Summary of the Invention

[0006] This application aims to solve at least one of the technical problems in the related art to some extent. To this end, this application provides a drive power management method, circuit, turn-off thyristor chip, and electronic device for a turn-off thyristor. By independently controlling the turn-on and turn-off of the turn-off thyristor, it is possible to implement different turn-on and turn-off voltage configuration strategies according to different working conditions.

[0007] To achieve the above object, in a first aspect, this application provides a drive power management method for a turn-off thyristor, which is applied to a drive control circuit. The drive control circuit includes a turn-on module and a turn-off module. Both the turn-on module and the turn-off module are connected to the gate of the turn-off thyristor to be driven and are used to control the turn-on and turn-off of the turn-off thyristor. The drive power management method includes: independently supplying power to the turn-on module through a turn-on circuit power management module, and independently supplying power to the turn-off module through a turn-off circuit power management module.

[0008] Preferably, the turn-on circuit power management module and the turn-off circuit power management module are respectively connected to an external power module. In the step of independent power supply control, the turn-on circuit power management module and the turn-off circuit power management module perform different voltage conversions on the voltage provided by the external power module, and respectively output the corresponding forward bias turn-on voltage and reverse bias turn-off voltage after conversion to the turn-on module and the turn-off module.

[0009] Preferably, the drive control circuit further includes a signal processing module connected to the anode of the turn-off thyristor; and,

[0010] In the step of independent power supply control, the drive control circuit collects the magnitude of the current of the turn-off thyristor through the signal processing module, and controls the turn-on circuit power management module and the turn-off circuit power management module to perform corresponding voltage conversions based on the magnitude of the current of the turn-off thyristor, so as to output a forward bias turn-on voltage and a reverse bias turn-off voltage matching the magnitude of the current to the turn-off thyristor.

[0011] Preferably, the step of controlling the turn-off circuit power management module to perform corresponding voltage conversion to output a reverse bias turn-off voltage matching the magnitude of the current is implemented by a second clamp sub-module and a second level conversion sub-module provided in the turn-off circuit power management module. Among them, the second clamp sub-module includes a second capacitor and a reverse clamping circuit, and the reverse clamping circuit is connected to the negative extreme of the second capacitor and is used to output reverse bias turn-off voltages of different levels to the turn-off module.

[0012] Preferably, the step of controlling the turn-on circuit power management module to perform corresponding voltage conversion to output a forward turn-on voltage matching the current magnitude to the turn-off thyristor is implemented by a first clamping sub-module and a first level conversion sub-module provided in the turn-on circuit power management module. Among them, the first clamping sub-module includes a first capacitor and a forward clamping circuit, and the forward clamping circuit is connected to the positive electrode end of the first capacitor for outputting forward turn-on voltages of different levels to the turn-on module.

[0013] This drive power management method can achieve different turn-on and turn-off voltage configuration strategies according to different situation requirements by independently controlling the power supply for the turn-on and turn-off of the turn-off thyristor, and can be applied to applications under different working conditions.

[0014] In a second aspect, the present application provides a drive power management circuit for a turn-off thyristor, including:

[0015] A turn-on module, connected to the gate of the turn-off thyristor, for controlling the turn-on time and turn-on speed of the turn-off thyristor;

[0016] A turn-off module, connected to the gate of the turn-off thyristor, for controlling the turn-off time and turn-off speed of the turn-off thyristor;

[0017] A turn-on circuit power management module, connected to the turn-on module, for independently controlling the power supply to the turn-on module;

[0018] A turn-off circuit power management module, connected to the turn-off module, for independently controlling the power supply to the turn-off module;

[0019] An external power supply module, connected to the turn-on circuit power management module and the turn-off circuit power management module, for providing a reference voltage for both.

[0020] Preferably, it further includes a signal processing module. The input end of the signal processing module is connected to the anode end of the turn-off thyristor for collecting the current magnitude of the turn-off thyristor, and the output end of the signal processing module is respectively connected to the turn-on circuit power management module and the turn-off circuit power management module for controlling the turn-on circuit power management module and the turn-off circuit power management module to perform corresponding voltage conversion.

[0021] Preferably, the turn-off thyristor is one of GTO, GCT, and ETO.

[0022] Preferably, the turn-on circuit power management module includes a first clamping sub-module and a first level conversion sub-module. The first clamping sub-module includes a first capacitor and a forward clamping circuit, and the forward clamping circuit is connected to the positive terminal of the first capacitor for outputting forward turn-on voltages of different levels to the turn-on module.

[0023] Preferably, the turn-off circuit power management module includes a second clamping sub-module and a second level conversion sub-module. The second clamping sub-module includes a second capacitor and a reverse clamping circuit, and the reverse clamping circuit is connected to the negative terminal of the second capacitor for outputting reverse turn-off voltages of different levels to the turn-off module.

[0024] Preferably, the signal processing module includes a processing unit and a comparison circuit. The input terminal of the comparison circuit is connected to the anode terminal of the turn-off thyristor, the output terminal of the comparison circuit is connected to the input terminal of the processing unit, and the output terminal of the processing unit is connected to the first level conversion sub-module and the second level conversion sub-module, for configuring turn-on voltages and turn-off voltages matching the magnitude of the anode current for the turn-off thyristor.

[0025] Preferably, the turn-on module includes a turn-on component group and an inductor group, and the turn-on component group and the inductor group cooperate to realize driving the turn-on current pulse of the turn-off thyristor device.

[0026] Preferably, the turn-off module includes a turn-off component group and a capacitor group, and the turn-off component group and the capacitor group cooperate to realize driving the turn-off current pulse of the turn-off thyristor device and the reverse bias turn-off voltage for the gate-cathode.

[0027] This drive power management circuit realizes the adjustment and control of the forward turn-on voltage of the turn-on circuit or the reverse turn-off voltage of the turn-off circuit by performing different potential conversions on the turn-on circuit power management module and the turn-off circuit power management module connected to an external power supply respectively, configures a reasonable switching frequency and switching performance according to the requirements of different working conditions. At the same time, the variable bias voltage power management circuit can meet better experimental requirements for turn-off thyristor type wafer chips.

[0028] In a third aspect, the present application provides a turn-off thyristor chip including the above-mentioned drive power management circuit. Through independent adjustment by discrete power management modules, the turn-on module and the turn-off module can achieve different switching speeds respectively.

[0029] In a fourth aspect, the present application provides an electronic device that uses the above-mentioned turn-off thyristor chip for voltage or current control and / or switching, and can realize adaptive adjustment and control of the turn-on and turn-off processes of the turn-off thyristor under periodic pulse working conditions.

[0030] Specifically, the above electronic device may adopt a commutation valve, which can achieve different on and off voltage configurations according to different current levels, so as to adaptively adjust the on and off processes under periodic pulse conditions.

[0031] Other features and advantages of the present application will be described in the subsequent specification. Moreover, some of them will become obvious from the specification, or the objectives and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written specification, claims, and drawings. Description of the Drawings

[0032] Figure 1 It is a circuit block diagram of the gate drive circuit of a conventional turn-off thyristor.

[0033] Figure 2 It is a circuit connection block diagram of the second embodiment of the drive power management circuit of a turn-off thyristor according to the present application.

[0034] Figure 3 It is a circuit connection block diagram of the third embodiment of the drive power management circuit of a turn-off thyristor according to the present application.

[0035] Figure 4 It is a local circuit connection diagram related to the turn-on module in the third embodiment of the drive power management circuit of a turn-off thyristor according to the present application.

[0036] Figure 5 It is a local circuit connection diagram related to the turn-off module in the third embodiment of the drive power management circuit of a turn-off thyristor according to the present application.

[0037] Figure 6 It is a local circuit connection diagram related to the signal processing module in the third embodiment of the drive power management circuit of a turn-off thyristor according to the present application.

[0038] In the figure: 1-1, turn-on module; 1-2, turn-off module; 1-3, turn-off thyristor; 1-4, turn-on circuit power management module; 1-41, first clamping sub-module; 1-42, first level conversion sub-module; 1-5, turn-off circuit power management module; 1-51, second clamping sub-module; 1-52, second level conversion sub-module; 1-6, external power supply module; 1-61, first external power output port; 1-62, second external power output port; 1-7, anode terminal; 1-8, signal processing module; 1-81, processing unit; 1-82, comparison circuit. Detailed Embodiments

[0039] To make the objectives, technical solutions, and advantages of the present application clearer, the following further describes the present application in detail with reference to specific embodiments and the accompanying drawings.

[0040] The terms used in the embodiments of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of the present invention. The singular forms "a", "said", and "the" used in the embodiments of the present invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0041] In order to achieve the switching control of a turn-off thyristor, as Figure 1 shown, the existing gate drive circuits applied to turn-off thyristor devices usually require a power management circuit to supply power to multiple modules such as an on-module, a maintenance module, and an off-module. After inputting a fixed total voltage to the drive circuit, different fixed voltages are configured for different modules through a fixed circuit design. However, this voltage is usually not adjustable. After the input level and the reference level are fixedly configured, a fixed value is output through a boost or buck circuit design. However, in many actual scenarios, the operating frequency of the turn-off thyristor needs to vary in the range of dozens of Hertz to hundreds of Hertz, and the requirements for the turn-on and turn-off speeds are also different under different working conditions. Therefore, the current design of the drive circuit limits the application of the turn-off thyristor under different working conditions.

[0042] In order to enable the drive power management circuit to meet the requirements of the turn-off thyristor to adapt to different working conditions, the inventor of the present invention has conducted in-depth research on the drive power management method of the turn-off thyristor and proposed a drive power management method for the turn-off thyristor.

[0043] Specifically, the design idea of the solution proposed in this application is as follows:

[0044] Aiming at the deficiencies of the prior art, the design method of the drive power management circuit of the present invention realizes the purpose of adjustable turn-on or turn-off bias voltage by splitting the traditional power management circuit into multiple modules.

[0045] Specifically, this application splits the fixed-configured turn-on and turn-off bias voltages of the traditional power management module into an independent turn-on circuit power management module and an off-circuit power management module, realizes the flexible adjustment of the turn-on positive bias turn-on voltage and the turn-off reverse bias turn-off voltage of the turn-off thyristor, and develops a new type of turn-on circuit power management module and off-circuit power management module to realize the independent regulation of the turn-on circuit positive bias turn-on voltage and the off-circuit reverse bias turn-off voltage respectively, so as to achieve the purpose of controlling the switching frequency and switching capacity of turn-off thyristor-like devices to adapt to different working conditions.

[0046] Embodiment 1

[0047] The present application provides a drive power management method for a turn-off thyristor, which is applied to a drive control circuit. The drive control circuit includes a turn-on module 1-1 and a turn-off module 1-2. Both the turn-on module 1-1 and the turn-off module 1-2 are connected to the gate of the turn-off thyristor 1-3 to be driven, and are used to control the turn-on and turn-off of the turn-off thyristor 1-3. The drive power management method includes: independently supplying power to the turn-on module 1-1 through a turn-on circuit power management module 1-4, and independently supplying power to the turn-off module 1-2 through a turn-off circuit power management module 1-5. In this embodiment, the turn-on circuit power management module 1-4 and the turn-off circuit power management module 1-5 are respectively connected to an external power module 1-6 to perform different voltage conversions on the voltage provided by the external power module 1-6, and respectively output the corresponding forward-biased turn-on voltage and reverse-biased turn-off voltage after conversion to the turn-on module 1-1 and the turn-off module 1-2.

[0048] Further, the drive power management method further includes, in the independent power supply control step, collecting the magnitude of the current of the turn-off thyristor 1-3 through a signal processing module 1-8, and controlling the turn-on circuit power management module 1-4 and the turn-off circuit power management module 1-5 to perform corresponding voltage conversions based on the magnitude of the current of the turn-off thyristor 1-3, so as to configure the turn-on voltage and turn-off voltage that match the magnitude of the current for the turn-off thyristor 1-3.

[0049] This drive power management method can achieve different turn-on and turn-off voltage configuration strategies according to different situation requirements by independently supplying power to control the turn-on and turn-off of the turn-off thyristor 1-3, and can be applied to different working conditions.

[0050] Further, the step of controlling the turn-on circuit power management module 1-4 to perform corresponding voltage conversion to output a forward-biased turn-on voltage that matches the magnitude of the current to the turn-off thyristor 1-3 is realized by a first clamp sub-module 1-41 and a first level conversion sub-module 1-42 provided in the turn-on circuit power management module 1-4. Among them, the first clamp sub-module 1-41 includes a first capacitor and a forward clamping circuit, and the forward clamping circuit is connected to the positive terminal of the first capacitor and is used to output forward-biased turn-on voltages of different levels to the turn-on module 1-1.

[0051] Further, the step of controlling the turn-off circuit power management module 1-5 to perform corresponding voltage conversion to output a reverse bias turn-off voltage matching the current magnitude to the turn-off thyristor 1-3 is implemented by a second clamping sub-module 1-51 and a second level conversion sub-module 1-52 provided in the turn-off circuit power management module 1-5. Among them, the second clamping sub-module 1-51 includes a second capacitor and a reverse clamping circuit, and the reverse clamping circuit is connected to the negative electrode of the second capacitor for outputting reverse bias turn-off voltages of different levels to the turn-off module 1-2.

[0052] Embodiment 2

[0053] As Figure 2 shown, the present application provides a drive power management circuit for a turn-off thyristor, including:

[0054] A turn-on module 1-1, connected to the gate of the turn-off thyristor 1-3, for controlling the turn-on time and turn-on speed of the turn-off thyristor 1-3;

[0055] A turn-off module 1-2, connected to the gate of the turn-off thyristor 1-3, for controlling the turn-off time and turn-off speed of the turn-off thyristor 1-3;

[0056] A turn-on circuit power management module 1-4, connected to the turn-on module 1-1, for independently controlling the power supply to the turn-on module 1-1;

[0057] A turn-off circuit power management module 1-5, connected to the turn-off module 1-2, for independently controlling the power supply to the turn-off module 1-2;

[0058] An external power supply module 1-6, connected to the turn-on circuit power management module 1-4 and the turn-off circuit power management module 1-5, for providing a reference voltage for both.

[0059] It can be observed that the drive power management circuit mainly consists of discrete turn-on circuit power management module 1-4 and turn-off power circuit management module. The above two modules are connected to the external power supply module 1-6. After potential conversion by the above two modules, a forward bias turn-on voltage and a reverse bias turn-off voltage are respectively output to the turn-on module 1-1 and the turn-off module 1-2. The two voltage values can be independently adjusted by the discrete power management modules to achieve different switching speeds and better adapt to the turn-on and turn-off requirements under different working conditions such as converter valves.

[0060] The drive power management circuit provided by this embodiment realizes the adjustment and control of the forward conduction voltage of the conduction circuit or the reverse turn-off voltage of the turn-off circuit by performing different potential transformations on the conduction circuit power management module 1-4 and the turn-off circuit power management module 1-5 connected to the external power supply respectively, configures a reasonable switching frequency and switching performance according to the requirements of different working conditions. At the same time, the variable bias voltage power management circuit can meet better experimental requirements for the turn-off thyristor 1-3 type wafer chips. By independently controlling the turn-on and turn-off of the turn-off thyristor 1-3, it is possible to implement different turn-on and turn-off voltage configuration strategies according to different working conditions.

[0061] Embodiment III

[0062] As Figure 3 shown, the present application provides a second embodiment of a drive power management circuit for a turn-off thyristor. The difference between this embodiment and the first embodiment of the above drive power management circuit is that, in addition to including:

[0063] A turn-on module 1-1, connected to the gate of the turn-off thyristor 1-3, for controlling the turn-on time and turn-on speed of the turn-off thyristor 1-3;

[0064] A turn-off module 1-2, connected to the gate of the turn-off thyristor 1-3, for controlling the turn-off time and turn-off speed of the turn-off thyristor 1-3;

[0065] A conduction circuit power management module 1-4, connected to the turn-on module 1-1, for independently supplying power to the turn-on module 1-1;

[0066] A turn-off circuit power management module 1-5, connected to the turn-off module 1-2, for independently supplying power to the turn-off module 1-2;

[0067] An external power supply module 1-6, connected to the conduction circuit power management module 1-4 and the turn-off circuit power management module 1-5, for providing a reference voltage for both of them.

[0068] It further includes a signal processing module 1-8. The input end of the signal processing module 1-8 is connected to the anode terminal 1-7 of the turn-off thyristor 1-3 for collecting the magnitude of the current of the turn-off thyristor 1-3. The output end of the signal processing module 1-8 is respectively connected to the conduction circuit power management module 1-4 and the turn-off circuit power management module 1-5 for controlling the conduction circuit power management module 1-4 and the turn-off circuit power management module 1-5 to perform corresponding voltage transformations.

[0069] In this embodiment, a signal processing module 1-8 capable of collecting the current of the thyristor 1-3 is integrated in the drive circuit, and signal comparison processing can be performed according to the collected current magnitude. After processing, a trigger signal is sent to the turn-on power management module and the turn-off power management module, and then a voltage is output to the turn-on module 1-1 and the turn-off module 1-2, so as to achieve the purpose of different turn-on and turn-off voltage configurations under different current level conditions.

[0070] As Figure 4 shown, in this embodiment, the turn-on circuit power management module 1-4 includes a first clamping sub-module 1-41 and a first level conversion sub-module 1-42. The external power module 1-6 includes a first external power output port and a second external power output port. The first clamping sub-module 1-41 is connected to the first external power output port 1-61. The first clamping sub-module 1-41 includes a first capacitor and a forward clamping circuit. The forward clamping circuit is connected to the positive terminal of the first capacitor and is used to output different levels of forward bias turn-on voltage to the turn-on module 1-1. The turn-on circuit power management module 1-4 can ensure reliable output of the forward bias turn-on voltage by configuring a clamping circuit at the positive pole of the externally input power supply. The turn-on module 1-1 includes a turn-on component group and an inductor group. The turn-on component group and the inductor group cooperate to generate a turn-on current pulse for driving the thyristor 1-3 device. The turn-on module 1-1 generates a current with a fixed rising edge through an LC oscillation circuit, and thus can trigger the turn-on of the device. Therefore, the cooperation mode of the turn-on component group and the inductor group is set in the turn-on module 1-1 to ensure reliable turn-on of the device.

[0071] As Figure 5 shown, in this embodiment, the turn-off circuit power management module 1-5 includes a second clamping sub-module 1-51 and a second level conversion sub-module 1-52. The second clamping sub-module 1-51 is connected to the second external power output port 1-62. The second clamping sub-module 1-51 includes a second capacitor and a reverse clamping circuit. The reverse clamping circuit is connected to the negative terminal of the second capacitor and is used to output different levels of reverse bias turn-off voltage to the turn-off module 1-2. The turn-off circuit power management module 1-5 can ensure reliable output of the reverse bias turn-off voltage by configuring a clamping circuit at the negative pole of the externally input power supply. The turn-off module 1-2 includes a turn-off component group and a capacitor group. The turn-off component group and the capacitor group cooperate to generate a turn-off current pulse for driving the thyristor 1-3 device and a reverse bias turn-off voltage for the gate-cathode. In addition to generating a turn-off current through an LC oscillation circuit, the turn-off module 1-2 also needs to perform a reverse bias control on the voltage of the gate-cathode to ensure reliable turn-off of the device. Therefore, the cooperation mode of the turn-off component group and the capacitor group is set in the turn-off module 1-2 to ensure reliable turn-off of the device.

[0072] AsFigure 6 As shown, in this embodiment, the signal processing module 1-8 includes a processing unit 1-81 and a comparison circuit. The input end of the comparison circuit is connected to the anode end 1-7 of the turn-off thyristor 1-3, and is used to detect the magnitude of the current of the turn-off thyristor 1-3. After collecting anode current signals of different levels, they are processed by the processing unit 1-81. The output end of the comparison circuit is connected to the input end of the processing unit 1-81. In this embodiment, the processing unit 1-81 uses an FPGA chip for signal processing. The output end of the processing unit 1-81 is connected to the first level conversion sub-module 1-42 and the second level conversion sub-module 1-52, and is used to configure the turn-on voltage and turn-off voltage matching the magnitude of the anode current for the turn-off thyristor 1-3. The processing unit 1-81 respectively sends feedback signals to the turn-on power supply circuit management module and the turn-off power supply circuit management module. The turn-on power supply circuit management module and the turn-off power supply circuit management module can, according to this feedback signal, configure different turn-on and turn-off bias voltages at different anode current levels, so as to achieve the effect of optimizing the turn-on and turn-off speeds, and realize the purpose of configuring different turn-on and turn-off voltages under different current level conditions.

[0073] Embodiment 4

[0074] This application provides a turn-off thyristor chip, and the drive power supply management circuit described above is included in the turn-off thyristor chip. By combining the above turn-on power supply circuit management module and turn-off power supply circuit management module, different switching speeds are achieved, and it better adapts to the turn-on and turn-off requirements under different working conditions such as converter valves. In the circuit design of this turn-off thyristor chip, independent adjustment is carried out through discrete power supply management modules. The turn-on module 1-1 and the turn-off module 1-2 can respectively achieve different switching speeds, and can realize the purpose of configuring different turn-on and turn-off voltages under different current level conditions.

[0075] Embodiment 5

[0076] This application provides an electronic device, which uses the above turn-off thyristor chip for voltage or current control and / or switching.

[0077] Further, the above-mentioned electronic device may specifically adopt a commutation valve, and the commutation valve includes a gate-turn-off thyristor 1-3. By using the above-mentioned drive power management circuit to adaptively adjust and control the opening and closing processes of the gate-turn-off thyristor (1-3) under periodic pulse conditions, it is possible to achieve different opening and closing voltage configurations according to different current levels, so as to achieve the purpose of adaptively adjusting the opening and closing processes under periodic pulse conditions. The electronic device performs current sampling and signal comparison processing through a signal processing module 1-8 for feedback control, and can realize the adaptive adjustment of the opening and closing bias voltages of the electronic device under multi-pulse cycle conditions, forming a closed-loop control, so as to achieve the purpose of adaptively adjusting the opening and closing processes of the gate-turn-off thyristor 1-3 under the specific conditions of the commutation valve.

[0078] The specific embodiments of the present invention have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve the desired result. Additionally, the processes depicted in the figures do not necessarily require the particular order or sequential order shown to achieve the desired result. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0079] In the description of the embodiments of the present invention, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In the embodiments of the present invention, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in the embodiments of the present invention and the features of different embodiments or examples.

[0080] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features, and do not include any ranking. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features and are used to distinguish each other. In the description of the embodiments of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0081] Any process or method description, whether in a flowchart or otherwise described herein, can be understood to represent a module, segment, or portion of code including one or more executable instructions for implementing a customized logical function or process. The scope of the preferred embodiments of the embodiments of the present invention includes additional implementations, where the functions may be executed in a substantially simultaneous manner or in a reverse order according to the functions involved, rather than in the order shown or discussed. This should be understood by those skilled in the art to which the embodiments of the present invention pertain.

[0082] The above are only the preferred embodiments of the embodiments of the present invention and are not intended to limit the embodiments of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the embodiments of the present invention shall be included within the scope of protection of the embodiments of the present invention.

Claims

1. A method for managing a driving power supply of a turn-off thyristor, applied to a driving control circuit, wherein the driving control circuit comprises an opening module (1-1) and a closing module (1-2), wherein both the opening module (1-1) and the closing module (1-2) are connected to the gate of a turn-off thyristor (1-3) to be driven, and are used to control the opening and closing of the turn-off thyristor (1-3), characterized in that: The driving power management method comprises: performing independent power supply control on the on module (1-1) through an on-circuit power management module (1-4), and performing independent power supply control on the off module (1-2) through a off-circuit power management module (1-5); The drive control circuit further comprises a signal processing module (1-8) connected to the anode of the turn-off thyristor (1-3); and In the independent power supply control step, the drive control circuit collects the current magnitude of the turn-off thyristor (1-3) through the signal processing module (1-8), and controls the turn-on circuit power management module (1-4) and the turn-off circuit power management module (1-5) to perform corresponding voltage conversion based on the current magnitude of the turn-off thyristor (1-3), so as to output a forward bias turn-on voltage and a reverse bias turn-off voltage matching the current magnitude to the turn-off thyristor (1-3); The step of controlling the on-circuit power management module (1-4) to perform corresponding voltage conversion so as to output a forward biased on-circuit voltage matching the current magnitude to the turn-off thyristor (1-3) is implemented by a first clamping submodule (1-41) and a first level conversion submodule (1-42) provided in the on-circuit power management module (1-4), wherein the first clamping submodule (1-41) comprises a first capacitor and a forward clamping circuit, the forward clamping circuit being connected to the positive terminal of the first capacitor and being used to output forward biased on-circuit voltages of different levels to the on-circuit module (1-1); The step of controlling the shutdown circuit power management module (1-5) to perform corresponding voltage conversion so as to output a reverse bias shutdown voltage matching the current magnitude to the turn-off thyristor (1-3) is implemented by a second clamping submodule (1-51) and a second level conversion submodule (1-52) provided in the shutdown circuit power management module (1-5), wherein the second clamping submodule (1-51) comprises a second capacitor and a reverse clamping circuit, and the reverse clamping circuit is connected to the negative terminal of the second capacitor and is used to output reverse bias shutdown voltages of different levels to the shutdown module (1-2).

2. The driving power management method according to claim 1, characterized in that: The on-circuit power management module (1-4) and the off-circuit power management module (1-5) are respectively connected to the external power module (1-6); In the independent power supply control step, the on-circuit power management module (1-4) and the off-circuit power management module (1-5) perform different voltage conversions on the voltage provided by the external power module (1-6), and output the converted corresponding forward biased on-voltage and reverse biased off-voltage to the on-circuit power management module (1-4) and the off-circuit power management module (1-5), respectively.

3. A driving power management circuit capable of turning off a thyristor, characterized in that: include: An opening module (1-1), connected to the gate of the turn-off thyristor (1-3), and used to control the opening time and opening speed of the turn-off thyristor (1-3); A shut-off module (1-2), connected to the gate of the turn-off thyristor (1-3), and used to control the turn-off time and turn-off speed of the turn-off thyristor (1-3); An opening circuit power management module (1-4), connected to the opening module (1-1), and used for independently controlling power supply to the opening module (1-1); A shutdown circuit power management module (1-5), connected to the shutdown module (1-2), and used for independently controlling power supply to the shutdown module (1-2); An external power supply module (1-6) is connected to the on-circuit power supply management module (1-4) and the off-circuit power supply management module (1-5) to provide a reference voltage for the two. It also includes a signal processing module (1-8), the input end of the signal processing module (1-8) is connected to the anode end (1-7) of the turn-off thyristor (1-3), and is used to collect the current of the turn-off thyristor (1-3); the output end of the signal processing module (1-8) is respectively connected to the on-circuit power management module (1-4) and the off-circuit power management module (1-5), and is used to control the on-circuit power management module (1-4) and the off-circuit power management module (1-5) to perform corresponding voltage conversion; The opening circuit power management module (1-4) comprises a first clamping submodule (1-41) and a first level conversion submodule (1-42), the first clamping submodule (1-41) comprising a first capacitor and a forward clamping circuit, the forward clamping circuit being connected to the positive terminal of the first capacitor and being used to output different levels of forward biased opening voltages to the opening module (1-1); The shutdown circuit power management module (1-5) comprises a second clamping submodule (1-51) and a second level conversion submodule (1-52), wherein the second clamping submodule (1-51) comprises a second capacitor and a reverse clamping circuit, wherein the reverse clamping circuit is connected to the negative terminal of the second capacitor and is used to output reverse bias shutdown voltages of different levels to the shutdown module (1-2).

4. The driving power management circuit according to claim 3, characterized in that: The turn-off thyristor (1-3) is one of GTO, GCT and ETO.

5. The driving power management circuit according to claim 4, characterized in that: The signal processing module (1-8) comprises a processing unit (1-81) and a comparison circuit, wherein the input end of the comparison circuit is connected to the anode end (1-7) of the turn-off thyristor (1-3), the output end of the comparison circuit is connected to the input end of the processing unit (1-81), and the output end of the processing unit (1-81) is connected to the first level conversion submodule (1-42) and the second level conversion submodule (1-52), and is used to configure a turn-off voltage and a turn-off voltage matching the anode current size for the turn-off thyristor (1-3).

6. The driving power management circuit according to claim 3, characterized in that: The opening module (1-1) comprises an opening component group and an inductor group, and the opening component group and the inductor group cooperate to realize an opening current pulse for driving the turn-off thyristor (1-3) device.

7. The driving power management circuit according to claim 3, characterized in that: The shutoff module (1-2) comprises a shutoff component group and a capacitor group, and the shutoff component group and the capacitor group cooperate to realize a shutoff current pulse driving the shutoff thyristor (1-3) device and a reverse-biased shutoff voltage to the gate cathode.

8. A turn-off thyristor chip, characterized in that: A driving power management circuit comprising any one of claims 3-7.

9. An electronic device, characterized in that: The gate-turn-off thyristor chip as claimed in claim 8 is used to control and / or switch voltage or current.

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