CN116404890A - Three-phase full-control rectification circuit capable of automatically distributing trigger pulse - Google Patents
Three-phase full-control rectification circuit capable of automatically distributing trigger pulse Download PDFInfo
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- CN116404890A CN116404890A CN202310546513.1A CN202310546513A CN116404890A CN 116404890 A CN116404890 A CN 116404890A CN 202310546513 A CN202310546513 A CN 202310546513A CN 116404890 A CN116404890 A CN 116404890A
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 41
- 239000010703 silicon Substances 0.000 claims abstract description 41
- 238000012545 processing Methods 0.000 claims abstract description 30
- 239000013307 optical fiber Substances 0.000 claims abstract description 27
- 238000005070 sampling Methods 0.000 claims abstract description 15
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- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 4
- OVGORFFCBUIFIA-UHFFFAOYSA-N Fenipentol Chemical compound CCCCC(O)C1=CC=CC=C1 OVGORFFCBUIFIA-UHFFFAOYSA-N 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
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- 230000001105 regulatory effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 230000014509 gene expression Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/1555—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit
- H02M7/1557—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit with automatic control of the output voltage or current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/06—Circuits specially adapted for rendering non-conductive gas discharge tubes or equivalent semiconductor devices, e.g. thyratrons, thyristors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/1552—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a biphase or polyphase arrangement
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The application discloses a three-phase full-control rectification circuit capable of automatically distributing trigger pulses relates to the technical field of three-phase full-control rectification circuits, sinusoidal signals of a three-phase power grid are collected through a phase signal generating circuit and are processed into phase signals, a timer is automatically started after a central processing unit collects the phase signals, a silicon controlled rectifier control angle is calculated according to a direct-current voltage control value calculated by an optical fiber receiving circuit and a direct-current voltage actual value collected by a direct-current sampling circuit, a silicon controlled rectifier control signal is output according to the silicon controlled rectifier control angle, the trigger distribution circuit automatically distributes the silicon controlled rectifier control signal according to the phase signals, and the control driving capability of the silicon controlled rectifier is enhanced through a driving circuit and then is output to a silicon controlled rectifier module. The three-phase full-control rectification circuit capable of automatically distributing the trigger pulse greatly reduces the load of a CPU, and the trigger pulse is automatically distributed by using a hardware circuit, so that the system stability is more reliable.
Description
Technical Field
The application relates to the technical field of three-phase full-control rectifying circuits, in particular to a three-phase full-control rectifying circuit capable of automatically distributing trigger pulses.
Background
Along with the continuous progress and development of electronic technology, the use of high-power electric appliances is becoming wider and wider, and in order to improve the utilization efficiency of electric energy, the variety and quantity of high-power inverter products are also increasing.
At present, trigger signals of three-phase thyristors in a high-power thyristor rectification system are complex, and a CPU (central processing unit) which is simply generated by adopting an embedded CPU to trigger pulse signals is overloaded, and the calculated amount is large, so that the information processing is not timely or the instantaneity of the system is influenced.
Disclosure of Invention
Therefore, the application provides a three-phase full-control rectification circuit capable of automatically distributing trigger pulses, so that the problems of overload CPU load and poor instantaneity in a high-power silicon controlled rectifier system in the prior art are solved.
In order to achieve the above object, the present application provides the following technical solutions:
a three-phase fully controlled rectifier circuit for automatically distributing trigger pulses, comprising:
the phase signal generating circuit is used for collecting sine signals of the three-phase power grid and processing the sine signals into phase signals;
the optical fiber receiving circuit is used for calculating a control value of the direct-current voltage according to an input signal of the optical fiber;
the direct current sampling circuit is used for collecting the actual value of the direct current voltage of the load system;
the central processing unit is used for calculating a silicon controlled rectifier control angle according to the direct-current voltage control value calculated by the optical fiber receiving circuit and the direct-current voltage actual value acquired by the direct-current sampling circuit and outputting a silicon controlled rectifier control signal according to the silicon controlled rectifier control angle;
the trigger distribution circuit is used for automatically distributing the silicon controlled rectifier control signals according to the phase signals;
and the driving circuit is used for enhancing the driving capability of the thyristor control signal and outputting the thyristor control signal to the thyristor module.
Preferably, the trigger distribution circuit includes:
a trigger pulse synthesizer for generating a pulse trigger control signal from the thyristor control signal;
a trigger pulse distributor for distributing a pulse trigger control signal;
and the trigger pulse reorganizer is used for reorganizing the allocated pulse trigger control signals and sending the reorganized pulse trigger control signals to the driving circuit.
Preferably, the trigger synthesizer and the trigger distributor are each composed of a plurality of and gates.
Preferably, the trigger pulse reorganizer is composed of a plurality of or gates.
Preferably, the trigger distribution circuit further includes:
and the work control circuit is used for judging whether the trigger distribution circuit and the driving circuit are allowed to work or not according to the work permission signal received by the optical fiber receiving circuit.
Preferably, the operation control circuit is a not gate.
Preferably, the driving circuit includes an inverting driver and a plurality of pulse transformers, the input end of the inverting driver is electrically connected with the output end of the trigger pulse reorganizer, the output end of the inverting driver is electrically connected with the input ends of the pulse transformers, and the output ends of the pulse transformers are electrically connected with the silicon controlled rectifier module.
Preferably, the phase signal generating circuit comprises a plurality of synchronous transformers, a plurality of comparators and a plurality of inverters which are electrically connected in sequence, wherein the input ends of the synchronous transformers are used for collecting sine signals of a three-phase power grid, and the output ends of the inverters are electrically connected with the central processing unit and the trigger distribution circuit.
Preferably, the direct current sampling circuit comprises a sensor and an operational amplifier which are electrically connected in sequence, wherein the sensor is used for collecting the actual value of the direct current voltage of the load system, and the actual value is amplified by the operational amplifier and then is input to the central processing unit.
Preferably, the central processing unit is an STM32 series chip.
Compared with the prior art, the application has the following beneficial effects:
the utility model provides an automatic distribution trigger pulse's three-phase full-control rectifier circuit gathers three-phase electric wire netting's sinusoidal signal through phase signal generation circuit to with sinusoidal signal processing for phase signal, central processing unit gathers phase signal back, automatic start timer, calculate the silicon controlled rectifier control angle according to the direct current voltage control value that optic fibre receiving circuit calculated and the direct current voltage actual value that direct current sampling circuit gathered, and according to silicon controlled rectifier control angle output silicon controlled rectifier control signal, trigger distribution circuit according to phase signal automatic distribution silicon controlled rectifier control signal, and strengthen silicon controlled rectifier control drive ability through drive circuit, then output to the silicon controlled rectifier module. The three-phase full-control rectifying circuit capable of automatically distributing trigger pulses can automatically trigger corresponding thyristors according to cables connected by constructors, and can adjust the output voltage of the thyristors according to the given value calculated by optical fiber input, so that the load of a CPU (Central processing Unit) is greatly reduced in a high-power thyristor rectifying system, and the trigger pulses are automatically distributed by using a hardware circuit, so that the system has more reliable system stability.
Drawings
For a more visual illustration of the prior art and the present application, several exemplary drawings are presented below. It should be understood that the specific shape and configuration shown in the drawings should not be considered in general as limiting upon the practice of the present application; for example, based on the technical concepts and exemplary drawings disclosed herein, those skilled in the art have the ability to easily make conventional adjustments or further optimizations for the add/subtract/assign division, specific shapes, positional relationships, connection modes, dimensional scaling relationships, etc. of certain units (components).
Fig. 1 is a block diagram of a three-phase fully-controlled rectifying circuit capable of automatically distributing trigger pulses;
FIG. 2 is a schematic diagram of a phase signal generation circuit provided herein;
FIG. 3 is a schematic diagram of a CPU, an optical fiber receiving circuit and a DC sampling circuit provided in the present application;
fig. 4 is a schematic diagram of a trigger distribution circuit and a driving circuit provided in the present application.
Detailed Description
The present application is further described in detail below with reference to the attached drawings.
In the description of the present application: unless otherwise indicated, the meaning of "a plurality" is two or more. The terms "first," "second," "third," and the like in this application are intended to distinguish between the referenced objects without a special meaning in terms of technical connotation (e.g., should not be construed as emphasis on degree or order of importance, etc.). The expressions "comprising", "including", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).
The terms such as "upper", "lower", "left", "right", "middle", and the like, as referred to in this application, are generally used for convenience in visual understanding with reference to the drawings, and are not intended to be an absolute limitation of the positional relationship in actual products. Such changes in relative positional relationship are considered to be within the scope of the present description without departing from the technical concepts disclosed herein.
Referring to fig. 1, the present application provides a three-phase fully-controlled rectifying circuit capable of automatically distributing trigger pulses, which includes a phase signal generating circuit, an optical fiber receiving circuit, a dc sampling circuit, a central processing unit (embedded CPU), a trigger distributing circuit and a driving circuit;
the phase signal generating circuit is used for collecting sine signals of the three-phase power grid and converting the sine signals into phase signals;
the optical fiber receiving circuit is used for calculating a control value of the direct-current voltage according to an input signal of the optical fiber;
because the direct-current voltage control signals in the prior art mostly adopt analog quantities such as voltage, current and the like to control the silicon controlled rectifier, and the capacity of the electrical signals is influenced by electromagnetic interference, the system is unstable, even under the condition of industrial strong interference, the starting and stopping of large-scale equipment can cause power grid fluctuation, so that large deviation of the conduction angle of the large-power rectifying equipment occurs, overcurrent tripping is caused, and equipment is even damaged; the application uses the optical fiber as a voltage control signal, so that the possibility of electromagnetic interference is avoided.
The direct current sampling circuit is used for collecting the actual value of the direct current voltage of the load system;
the system is enabled to independently complete the internal closed loop feedback control of the system by collecting the direct-current voltage of the system, so that the voltage control precision is high, the response speed is high, and the control precision and the following speed of the voltage are improved.
The central processing unit is used for calculating a controlled silicon control angle according to the direct-current voltage control value calculated by the optical fiber receiving circuit and the direct-current voltage actual value acquired by the direct-current sampling circuit and outputting a controlled silicon control signal according to the controlled silicon control angle;
specifically, after the central processing unit collects the synchronous signals of the three-phase alternating current signals, a timer is automatically started, then a silicon controlled rectifier control angle is calculated according to the direct current voltage control value calculated by the optical fiber receiving circuit and the direct current voltage actual value collected by the direct current sampling circuit, and a silicon controlled rectifier control signal is output according to the silicon controlled rectifier control angle. In the method, the CPU dynamically tracks according to the actual value and the set value (namely the control value) to realize the real-time control of the conduction angle of the silicon controlled rectifier.
It should be noted that, the central processing unit of the present application adopts an embedded CPU, and the computing power of the embedded CPU is strong.
The trigger distribution circuit is used for automatically distributing the silicon controlled rectifier control signals according to the phase signals;
specifically, the trigger distribution circuit can automatically distribute 3 silicon controlled rectifier control signals transmitted by the CPU to 6 silicon controlled rectifiers according to the phase signals.
The silicon controlled trigger mode used in the prior art adopts a single pulse mode, because the CPU burden in the single pulse mode is lighter, but because the total energy of the single pulse is overlarge, a high-power driving power supply is required to be used, and the single pulse has low primary and secondary energy transfer efficiency in a transformer, so that the pulse is possibly lost. The pulse beam signal is introduced into the trigger distribution circuit, so that the power consumption of the silicon controlled rectifier driving circuit is reduced, the pulse beam can repeatedly send the pulse signal for a plurality of times, and the effective opening of the silicon controlled rectifier is ensured.
And the driving circuit is used for enhancing the driving capability of the thyristor control signal and outputting the thyristor control signal to the thyristor module.
Further, referring to fig. 2, the phase signal generating circuit is composed of a synchronous transformer T11, a synchronous transformer T12, a synchronous transformer T13, a comparator U6A, a comparator U6B, a comparator U6C, an inverter U7A, an inverter U7B, an inverter U7C and a peripheral circuit, wherein the synchronous transformer T11, the synchronous transformer T12 and the synchronous transformer T13 are used for collecting sinusoidal signals of a three-phase power grid, and the sinusoidal signals are processed by three comparators and three inverters to generate phase signals, and then the phase signals are respectively transmitted to the central processor and the trigger distribution circuit.
According to the method, the comparator and the inverter are used as synchronous and phase signal acquisition devices of the three-phase power grid, the accuracy of synchronous and phase signals is effectively improved, and the influence of the synchronous and phase signals on the trigger time sequence of the silicon controlled rectifier is greatly affected, so that the comparator and the inverter are used as the acquisition devices, and the influence speed and the accuracy of the three-phase trigger signals are effectively improved.
Referring to fig. 3, the optical fiber receiving circuit is provided with two optical fiber receivers, wherein the two optical fiber receivers are respectively U5 and U8, the models of U5 and U8 are HFBR2521, and the optical fiber receivers can be conveniently integrated into a power electronic system; the central processing unit U4E is preferably an STM312 series chip; the DC sampling circuit is composed of a sensor M2, an operational amplifier U23C and peripheral circuits.
The connection point of the 1 st pin and the 4 th pin of the optical fiber receiver U5 is electrically connected with the 53 rd pin of the central processing unit U4E, and the optical fiber receiver U5 is used for calculating a control value of direct current voltage according to an input signal of an optical fiber; the connection point of the 1 st pin and the 4 th pin of the optical fiber receiver U8 is electrically connected with the 39 th pin of the central processing unit U4E, and the optical fiber receiver U8 is used for sending a work permission signal to the central processing unit U4E and the trigger distribution circuit;
the sensor M2 in the DC sampling circuit is used for collecting the actual value of the DC voltage of the load system, and the actual value is amplified by the operational amplifier U23C and then is input to the central processing unit U4E through the 8 th pin of the operational amplifier U23C and the 54 th pin of the central processing unit U4E.
Referring to fig. 2 and 3, three pins PH-ab+, PH-bc+ and PH-ca+ of the phase signal generating circuit are electrically connected to the 8 th pin, the 9 th pin and the 10 th pin of the central processing unit U4E, respectively, for transmitting the phase signal to the central processing unit.
Referring to fig. 4, the trigger distribution circuit includes a trigger pulse synthesizer, a trigger pulse distributor, and a trigger pulse reorganizer, where the trigger pulse synthesizer is used to generate a pulse trigger control signal from a silicon controlled control signal; the trigger pulse distributor is used for distributing pulse trigger control signals; the trigger pulse reorganizer is used for reorganizing the allocated pulse trigger control signals and sending the reorganized pulse trigger control signals to the driving circuit; the trigger pulse synthesizer is formed by connecting an AND gate U11A, an AND gate U9B, an AND gate U11B and an AND gate U13A; the trigger pulse distributor is formed by connecting an AND gate U9B, an AND gate U11B, an AND gate U13A, an AND gate U9C, an AND gate U9A, an AND gate U9D, an AND gate U11C, an AND gate U11D and an AND gate U13B; the trigger pulse reorganizer consists of an or gate U10A, U10B, U10C, U10D, U12D, U B.
Referring to fig. 2 to 4, the specific circuit connections between the trigger distribution circuit and the cpu and the phase signal generation circuit are as follows: the PWM-10K pin of the trigger distribution circuit is electrically connected with the 38 th pin of the central processing unit U4E, the OUT-AB pin, the OUT-BC pin and the OUT-CA pin of the trigger distribution circuit are respectively electrically connected with the 24 th pin, the 25 th pin and the 37 th pin of the central processing unit U4E, the PH-AB+, PH-AB-, PH-BC+, PH-CA+ pin and the PH-CA-pin of the trigger distribution circuit are respectively electrically connected with the PH-AB+, PH-AB-, PH-BC+, PH-CA+ pin and the PH-CA-pin of the phase signal generation circuit, and the PH-AB+, PH-BC+ pin and the PH-CA+ pin of the trigger distribution circuit are also electrically connected with the 8 th pin, the 9 th pin and the 10 th pin of the central processing unit U4E.
Referring to fig. 4, the trigger distribution circuit further includes a work control circuit, which is a not gate U7D, for determining whether to allow the subsequent trigger distribution circuit and the driving circuit to work according to the work permission signal received by the optical fiber receiving circuit U8.
Referring to fig. 4, the driving circuit is composed of an inverting driver U2, pulse transformers T1-T6 and peripheral circuits, and is used for enhancing the driving capability of the trigger pulse and is connected to the scr module through J2, J3, J4. The integrated design is adopted, so that the transmission distance between the trigger distribution circuit and the driving circuit is short, and the transfer delay is effectively reduced.
The three-phase full-control rectification circuit capable of automatically distributing trigger pulses can greatly reduce CPU burden, and the trigger pulses are automatically distributed by using a hardware circuit, so that the system stability is more reliable, the circuit can be controlled by a direct-current voltage regulating system, a high-power direct-current motor speed regulating system, a three-phase silicon controlled rectifier voltage regulating system and the like which are applied to a high-power silicon controlled rectifier rectification system, and the applicability of the circuit is greatly improved.
Any combination of the technical features of the above embodiments may be performed (as long as there is no contradiction between the combination of the technical features), and for brevity of description, all of the possible combinations of the technical features of the above embodiments are not described; these examples, which are not explicitly written, should also be considered as being within the scope of the present description.
The foregoing has outlined and detailed description of the present application in terms of the general description and embodiments. It should be appreciated that numerous conventional modifications and further innovations may be made to these specific embodiments, based on the technical concepts of the present application; but such conventional modifications and further innovations may be made without departing from the technical spirit of the present application, and such conventional modifications and further innovations are also intended to fall within the scope of the claims of the present application.
Claims (10)
1. A three-phase fully controlled rectifier circuit for automatically distributing trigger pulses, comprising:
the phase signal generating circuit is used for collecting sine signals of the three-phase power grid and processing the sine signals into phase signals;
the optical fiber receiving circuit is used for calculating a control value of the direct-current voltage according to an input signal of the optical fiber;
the direct current sampling circuit is used for collecting the actual value of the direct current voltage of the load system;
the central processing unit is used for calculating a silicon controlled rectifier control angle according to the direct-current voltage control value calculated by the optical fiber receiving circuit and the direct-current voltage actual value acquired by the direct-current sampling circuit and outputting a silicon controlled rectifier control signal according to the silicon controlled rectifier control angle;
the trigger distribution circuit is used for automatically distributing the silicon controlled rectifier control signals according to the phase signals;
and the driving circuit is used for enhancing the driving capability of the thyristor control signal and outputting the thyristor control signal to the thyristor module.
2. The three-phase fully controlled rectifier circuit for automatically distributing trigger pulses according to claim 1, wherein said trigger distribution circuit comprises:
a trigger pulse synthesizer for generating a pulse trigger control signal from the thyristor control signal;
a trigger pulse distributor for distributing a pulse trigger control signal;
and the trigger pulse reorganizer is used for reorganizing the allocated pulse trigger control signals and sending the reorganized pulse trigger control signals to the driving circuit.
3. The three-phase fully controlled rectifier circuit for automatically distributing trigger pulses according to claim 2, wherein said trigger pulse synthesizer and said trigger pulse distributor are each comprised of a plurality of and gates.
4. The three-phase fully controlled rectifier circuit for automatically distributing trigger pulses according to claim 2, wherein said trigger pulse reorganizer is comprised of a plurality of or gates.
5. The three-phase fully controlled rectifier circuit for automatically distributing trigger pulses according to claim 2, wherein said trigger distribution circuit further comprises:
and the work control circuit is used for judging whether the trigger distribution circuit and the driving circuit are allowed to work or not according to the work permission signal received by the optical fiber receiving circuit.
6. The three-phase fully controlled rectifier circuit for automatically distributing trigger pulses according to claim 5, wherein said operation control circuit is a NOT gate.
7. The three-phase fully controlled rectifier circuit for automatically distributing trigger pulses according to claim 2, wherein the driving circuit comprises an inverting driver and a plurality of pulse transformers, the input end of the inverting driver is electrically connected with the output end of the trigger pulse reorganizer, the output end of the inverting driver is electrically connected with the input ends of the plurality of pulse transformers, and the output ends of the plurality of pulse transformers are electrically connected with the silicon controlled rectifier module.
8. The three-phase fully-controlled rectifying circuit for automatically distributing trigger pulses according to claim 1, wherein the phase signal generating circuit comprises a plurality of synchronous transformers, a plurality of comparators and a plurality of inverters which are electrically connected in sequence, the input ends of the synchronous transformers are used for collecting sine signals of a three-phase power grid, and the output ends of the inverters are electrically connected with the central processing unit and the trigger distribution circuit.
9. The three-phase fully-controlled rectifying circuit for automatically distributing trigger pulses according to claim 1, wherein the direct current sampling circuit comprises a sensor and an operational amplifier which are electrically connected in sequence, wherein the sensor is used for collecting the actual value of the direct current voltage of a load system, and the actual value of the direct current voltage is amplified by the operational amplifier and then is input to the central processing unit.
10. The three-phase fully controlled rectifier circuit for automatically distributing trigger pulses according to claim 1, wherein said central processing unit is an STM32 series chip.
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| CN202310546513.1A CN116404890A (en) | 2023-05-15 | 2023-05-15 | Three-phase full-control rectification circuit capable of automatically distributing trigger pulse |
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| CN1156345A (en) * | 1996-07-02 | 1997-08-06 | 曹杰 | Phase-shift trigger circuit for thyrictor and integrate module of said trigger circuit and thyristor |
| CN101800482A (en) * | 2010-02-11 | 2010-08-11 | 株洲南车时代电气股份有限公司 | Dephasing superpower thyristor pulse trigger |
| CN102916640A (en) * | 2012-11-12 | 2013-02-06 | 株洲南车时代电气股份有限公司 | Phase-control excitation control device and method for internal combustion locomotive |
| CN113381625A (en) * | 2021-08-13 | 2021-09-10 | 天津飞旋科技股份有限公司 | Soft start rectification circuit, control panel, control method and frequency converter |
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