Three-phase silicon controlled rectifier power automatic regulator

Abstract

The invention relates to the technical field of power regulators, and particularly discloses a three-phase silicon controlled rectifier power automatic regulator which comprises a trigger board, a silicon controlled rectifier unit, a control signal input unit, a fault protection unit and a communication unit. The trigger board is used for generating a trigger signal to control the on and off of the silicon controlled rectifier unit so as to realize accurate voltage, current and power control; the silicon controlled rectifier unit can respond to a signal of the trigger board to realize rapid power adjustment; the control signal input unit supports the input of various control signals; the fault protection unit performs self-detection and fault protection on the regulator so as to ensure that the regulator stably operates in a safe state; and the communication unit is used for performing data transmission and networking control on the regulator. Self-inspection and fault protection can be carried out on the regulator and the circuit, the power supply circuit is automatically cut off, the circuit and the regulator are protected, the regulator is ensured not to be damaged, and potential safety hazards are effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of power regulators, and in particular to a three-phase thyristor automatic power regulator. Background Art

[0002] At present, the three-phase thyristor power automatic regulator, also known as the three-phase voltage-stabilizing thyristor power regulator or the three-phase thyristor power regulator, is a power regulation device based on thyristor technology. It achieves precise temperature control through precise control of voltage, current and power, and optimizes the efficiency of electric energy use with its advanced digital control algorithm. The existing motors have low electricity efficiency and high energy consumption, which is very unfavorable to environmental protection.

[0003] The prior art CN105958843A provides a universal power regulator for a three-phase motor, which includes three power regulation modules respectively connected to the A-phase, B-phase, and C-phase wiring terminals of the three-phase alternating current. The structure of each power regulation module is the same, namely, it is composed of a TOPSwitch-IITOP series three-terminal power supply chip and its peripheral circuit, wherein the peripheral circuit includes a fifth diode, an input rectifier and filter circuit connected to the drain end of the three-terminal power supply chip, an oscillator circuit connected to the source end of the three-terminal power supply chip, an adjustable feedback circuit connected to the control input end of the three-terminal power supply chip, and an output transformer circuit.

[0004] However, in the prior art, there is a lack of circuit fault protection for the regulator, resulting in a failure to protect the regulator and the entire circuit, which may easily cause safety hazards. Summary of the invention

[0005] The purpose of the present invention is to provide a three-phase thyristor power automatic regulator, aiming to solve the technical problem in the prior art that there is a lack of circuit fault protection for the regulator, resulting in the inability to protect the regulator and the entire circuit, which easily causes safety hazards.

[0006] To achieve the above object, the present invention adopts a three-phase thyristor power automatic regulator, including a trigger board, a thyristor unit, a control signal input unit, a fault protection unit and a communication unit;

[0007] The trigger board is used to generate a trigger signal to control the on and off of the thyristor unit to achieve precise voltage, current and power control;

[0008] The thyristor unit can respond to the signal of the trigger board to achieve rapid power adjustment;

[0009] The control signal input unit supports the input of multiple control signals;

[0010] The fault protection unit performs self-detection and fault protection on the regulator to ensure that the regulator operates stably in a safe state;

[0011] The communication unit is used for data transmission and networking control of the regulator.

[0012] Wherein, the fault protection unit includes a sensing module, a logic control module, a phase loss protection module, an overcurrent protection module and a heat dissipation monitoring module;

[0013] The sensor module is used to detect the state of the regulator in real time and feed it back to the logic control module;

[0014] The logic control module is used to receive the data information of the sensor module and make judgments and processes according to the preset protection logic;

[0015] The phase loss protection module is used to detect whether the three-phase power supply has a phase loss;

[0016] The overcurrent protection module is used to cut off the power supply or reduce the output power when the current exceeds the rated value of the regulator to ensure that the regulator and the circuit are not damaged;

[0017] The heat dissipation monitoring module is used to monitor the operating status of the heat dissipation system to ensure that the regulator operates within a safe temperature range.

[0018] Wherein, the fault protection unit also includes an overvoltage protection module, which is used to cut off the power supply or reduce the output power when the voltage exceeds the rated value of the regulator to ensure that the regulator and the circuit are not damaged.

[0019] The fault protection unit further includes an undervoltage protection module, which cuts off the power supply when the voltage is lower than the lowest threshold of the regulator to ensure that the regulator and the circuit are not damaged.

[0020] Wherein, the sensing module includes a current transformer, a voltage sensor and a temperature sensor;

[0021] The current transformer is used to detect the current in the circuit, and when the current exceeds the set value, a protection mechanism will be triggered;

[0022] The voltage sensor is used to monitor the voltage status and data in the circuit in real time;

[0023] The temperature sensor is used to detect temperature data in the regulator.

[0024] Wherein, the control signal input unit includes a synchronous shaping module, a sawtooth wave generator, a PI regulator, a current amplifier, a pulse generation modulation module and a pulse amplification and voltage transformation module;

[0025] The synchronous shaping module is used to shape the input AC signal into a square wave signal;

[0026] The sawtooth wave generator is used to generate a sawtooth wave synchronization signal with the same frequency as the power supply, and the signal is used to compare with the output control signal of the PI regulator to generate a trigger pulse;

[0027] The PI regulator receives the input control signal and feedback signal, and adjusts the output through proportional and integral operations to achieve constant voltage or constant current control;

[0028] The current amplifier is used to amplify the current feedback signal;

[0029] The pulse generation and modulation module generates a trigger pulse according to the comparison result between the output of the PI regulator and the synchronization signal of the sawtooth wave generator, and forms a pulse train signal;

[0030] The pulse amplification and voltage transformation module is used to amplify the pulse train signal generated by the pulse generation and modulation module.

[0031] Wherein, the control signal input unit also includes an input interface and a feedback interface;

[0032] The input interface is used to receive an external control signal;

[0033] The feedback interface is used to receive a feedback signal of voltage or current from the main circuit to achieve closed-loop control.

[0034] A three-phase thyristor power automatic regulator of the present invention can realize accurate control of voltage, current and power through the trigger board and the thyristor unit, wherein the thyristor unit can respond to the signal instruction sent by the trigger board to realize rapid power adjustment. During the operation of the regulator, the fault protection unit performs fault detection and protection on the circuit and the regulator. When the circuit or the regulator fails or is abnormal, the power supply can be cut off to ensure the safety of the regulator, avoid damage to the regulator, and reduce the occurrence of safety accidents. The control signal input unit can receive inputs of multiple control signals to improve the adaptability range of the regulator. The communication unit can transmit and receive data, and can also perform network control to improve the intelligence level. The above system settings can perform self-inspection and fault protection on the regulator and the circuit. When the various operating states of the circuit and the regulator are outside the preset threshold range, the power supply circuit is automatically cut off to protect the circuit and the regulator, ensure that the regulator is not damaged, and effectively reduce safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a system diagram of a three-phase thyristor power automatic regulator of the present invention.

[0037] Figure 2 It is a system diagram of the fault protection unit of the present invention.

[0038] Figure 3 is a system diagram of the sensor module of the present invention.

[0039] Figure 4 It is a system diagram of the control signal input unit of the present invention.

[0040] Figure 5 is a system diagram of a communication unit of the present invention.

[0041] 1-trigger board, 2-thyristor unit, 3-control signal input unit, 4-fault protection unit, 5-communication unit, 6-sensor module, 7-logic control module, 8-phase loss protection module, 9-overcurrent protection module, 10-heat dissipation monitoring module, 11-overvoltage protection module, 12-undervoltage protection module, 13-current transformer, 14-voltage sensor, 15-temperature sensor, 16-synchronous shaping module, 17-sawtooth wave generator, 18-PI regulator, 19-current amplifier, 20-pulse generation modulation module, 21-pulse amplification and transformation module, 22-input interface, 23-feedback interface, 24-wireless communication module, 25-auxiliary module, 26-storage module, 27-safety module, 28-interface module. DETAILED DESCRIPTION

[0042] See also Figures 1 to 5 , the present invention provides a three-phase thyristor power automatic regulator, including a trigger board 1, a thyristor unit 2, a control signal input unit 3, a fault protection unit 4 and a communication unit 5;

[0043] The trigger board 1 is used to generate a trigger signal to control the on and off of the thyristor unit 2 to achieve precise voltage, current and power control;

[0044] The thyristor unit 2 can respond to the signal of the trigger board 1 to achieve rapid power adjustment;

[0045] The control signal input unit 3 supports the input of multiple control signals;

[0046] The fault protection unit 4 performs self-detection and fault protection on the regulator to ensure that the regulator operates stably in a safe state;

[0047] The communication unit 5 is used for data transmission and networking control of the regulator.

[0048] In this embodiment, the trigger board 1 and the thyristor unit 2 realize accurate control of voltage, current and power, wherein the thyristor unit 2 can respond to the signal command issued by the trigger board 1 to realize rapid power adjustment. During the operation of the regulator, the fault protection unit 4 performs fault detection and protection on the circuit and the regulator. When a fault or abnormality occurs in the circuit or the regulator, the power supply can be cut off to ensure the safety of the regulator, avoid damage to the regulator, and reduce the occurrence of safety accidents. The control signal input unit 3 can receive inputs of multiple control signals to improve the adaptability range of the regulator. The communication unit 5 can transmit and receive data, and can also perform network control to improve the degree of intelligence.

[0049] Furthermore, the fault protection unit 4 includes a sensing module 6, a logic control module 7, a phase loss protection module 8, an overcurrent protection module 9 and a heat dissipation monitoring module 10;

[0050] The sensor module 6 is used to detect the state of the regulator in real time and feed it back to the logic control module 7;

[0051] The logic control module 7 is used to receive the data information of the sensor module 6 and make judgments and processes according to the preset protection logic;

[0052] The phase loss protection module 8 is used to detect whether the three-phase power supply has a phase loss;

[0053] The overcurrent protection module 9 is used to cut off the power supply or reduce the output power when the current exceeds the rated value of the regulator to ensure that the regulator and the circuit are not damaged;

[0054] The heat dissipation monitoring module 10 is used to monitor the operating status of the heat dissipation system to ensure that the regulator operates within a safe temperature range.

[0055] In this embodiment, in the fault protection unit 4, the sensor module 6 monitors the state of the regulator in real time, and transmits the monitoring result to the logic control module 7 in real time for interaction, and judges and processes according to the protection logic preset by the logic control module 7. During processing, it is implemented by the phase loss protection module 8 and the overcurrent protection module 9. The heat dissipation monitoring module 10 monitors the operating state of the heat dissipation system in real time to ensure that the heat dissipation system is in a normal operating state. If the heat dissipation system is abnormal, it will be fed back to the logic control module 7, and the logic control module 7 will issue an abnormal instruction and feed back to the background in time.

[0056] Furthermore, the fault protection unit 4 also includes an overvoltage protection module 11. When the voltage exceeds the rated value of the regulator, the overvoltage protection module 11 is used to cut off the power supply or reduce the output power to ensure that the regulator and the circuit are not damaged.

[0057] In this embodiment, the overvoltage protection module 11 protects the voltage of the regulator in the fault protection unit 4 to prevent the voltage from exceeding the rated voltage of the regulator, thereby protecting the regulator.

[0058] Furthermore, the fault protection unit 4 also includes an undervoltage protection module 12. When the voltage is lower than the lowest threshold of the regulator, the undervoltage protection module 12 cuts off the power supply to ensure that the regulator and the circuit are not damaged.

[0059] In this embodiment, the undervoltage protection module 12 protects the voltage of the regulator in the fault protection unit 4 to avoid shortening the life of components or burning them due to too low voltage, thereby protecting the circuit and the regulator.

[0060] Furthermore, the sensor module 6 includes a current transformer 13, a voltage sensor 14 and a temperature sensor 15;

[0061] The current transformer 13 is used to detect the current in the circuit, and when the current exceeds the set value, a protection mechanism will be triggered;

[0062] The voltage sensor 14 is used to monitor the voltage status and data in the circuit in real time;

[0063] The temperature sensor 15 is used to detect temperature data in the regulator.

[0064] In this embodiment, the current transformer 13, the voltage sensor 14 and the temperature sensor 15 are used in the sensor module 6 to perform real-time detection of current, voltage and temperature of the regulator and the circuit, and the state of the regulator is judged by the detected data, and corresponding processing is performed accordingly.

[0065] Furthermore, the control signal input unit 3 includes a synchronous shaping module 16, a sawtooth wave generator 17, a PI regulator 18, a current amplifier 19, a pulse generation modulation module 20 and a pulse amplification and voltage transformation module 21;

[0066] The synchronous shaping module 16 is used to shape the input AC signal into a square wave signal;

[0067] The sawtooth wave generator 17 is used to generate a sawtooth wave synchronization signal with the same frequency as the power supply, and the signal is used to compare with the output control signal of the PI regulator 18 to generate a trigger pulse;

[0068] The PI regulator 18 receives the input control signal and feedback signal, and adjusts the output through proportional and integral operations to achieve constant voltage or constant current control;

[0069] The current amplifier 19 is used to amplify the current feedback signal;

[0070] The pulse generation and modulation module 20 generates a trigger pulse according to the comparison result of the output of the PI regulator 18 and the synchronization signal of the sawtooth wave generator 17, and forms a pulse train signal;

[0071] The pulse amplifying and transforming module 21 is used to amplify the pulse train signal generated by the pulse generating and modulating module 20 .

[0072] In this embodiment, in the control signal input unit 3, the external input signal is converted and shaped by the synchronous shaping module 16, and the converted square wave signal is formed into a pulse train signal through the sawtooth wave generator 17 and the PI regulator 18. At the same time, constant voltage or constant current control is implemented in the PI regulator 18. The current amplifier 19 amplifies the signal received by the PI regulator 18 to improve the accuracy of signal reception. At the same time, the pulse amplification and transformation module 21 amplifies the formed pulse train signal.

[0073] Furthermore, the control signal input unit 3 also includes an input interface 22 and a feedback interface 23;

[0074] The input interface 22 is used to receive external control signals;

[0075] The feedback interface 23 is used to receive a feedback signal of voltage or current from the main circuit to implement closed-loop control.

[0076] In this embodiment, the input interface 22 receives external signals, and the feedback interface 23 receives signals in the circuit, so that the internal and external signals are connected to form a closed-loop control.

[0077] Furthermore, the communication unit 5 includes a wireless communication module 24 and an auxiliary module 25;

[0078] The wireless communication module 24 is responsible for wireless network transmission and reception of digital signals;

[0079] The auxiliary module 25 is used to assist the wireless communication module 24 in communication transmission and data processing.

[0080] In this embodiment, the wireless communication module 24 receives externally transmitted commands and transmits internal data status at the same time. The auxiliary module 25 assists the wireless communication module 24 to improve the functionality of the wireless communication module 24 .

[0081] Further, the auxiliary module 25 includes a storage module 26, a security module 27 and an interface module 28;

[0082] The storage module 26 is used to store the transmitted and received digital signals to facilitate subsequent data analysis and troubleshooting;

[0083] The security module 27 is used to encrypt and authenticate the data content in the storage module 26 to ensure the data security of the transmitted and received data;

[0084] The interface module 28 is used to connect external devices to an external network.

[0085] In this embodiment, the communication unit 5 can be connected and transmitted by wire through the interface module 28. After the instructions or signals of the external device are transmitted to the communication unit 5, they are independently stored by the storage unit. At the same time, the data content in the communication unit 5 is transmitted to the outside and is also independently stored. When it is necessary to read the transmitted and received data content and instructions, identity authentication is performed through the security module 27 to ensure the security of the data.

[0086] In the present invention, the communication module receives data information from an external device and transmits it to the control signal input unit 3. The control signal input unit 3 shapes the external AC signal to form a square wave signal. The sawtooth wave generator 17 and the PI regulator 18 generate a pulse train signal according to the square wave signal, and transmit its instructions to the trigger board 1, the thyristor unit 2 and the fault protection unit 4. The trigger board 1, the thyristor unit 2 and the fault protection unit 4 transmit data or replace preset instructions through external signal instructions. After replacing the preset instructions, the trigger board 1, the thyristor unit 2 and the fault protection unit 4 Unit 4 is executed according to the updated instructions, wherein, in the fault protection unit 4, the sensor module 6 monitors the state of the regulator in real time, and transmits the monitoring result to the logic control module 7 in real time for interaction, and judges and processes according to the protection logic preset by the logic control module 7. During processing, it is implemented by the phase loss protection module 8 and the overcurrent protection module 9. The heat dissipation monitoring module 10 monitors the operating state of the heat dissipation system in real time to ensure that the heat dissipation system is in a normal operating state. If the heat dissipation system is abnormal, it will be fed back to the logic control module 7, and the logic control module 7 will issue an abnormal instruction and feed back to the background in time.

[0087] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A three-phase thyristor power automatic regulator, characterized in that: It includes a trigger board, a thyristor unit, a control signal input unit, a fault protection unit and a communication unit; The trigger board is used to generate a trigger signal to control the on and off of the thyristor unit to achieve precise voltage, current and power control; The thyristor unit can respond to the signal of the trigger board to achieve rapid power adjustment; The control signal input unit supports the input of multiple control signals; The fault protection unit performs self-detection and fault protection on the regulator to ensure that the regulator operates stably in a safe state; The communication unit is used for data transmission and networking control of the regulator.

2. A three-phase thyristor power automatic regulator as claimed in claim 1, characterized in that: The fault protection unit includes a sensing module, a logic control module, a phase loss protection module, an overcurrent protection module and a heat dissipation monitoring module; The sensor module is used to detect the state of the regulator in real time and feed it back to the logic control module; The logic control module is used to receive the data information of the sensor module and make judgments and processes according to the preset protection logic; The phase loss protection module is used to detect whether the three-phase power supply has a phase loss; The overcurrent protection module is used to cut off the power supply or reduce the output power when the current exceeds the rated value of the regulator to ensure that the regulator and the circuit are not damaged; The heat dissipation monitoring module is used to monitor the operating status of the heat dissipation system to ensure that the regulator operates within a safe temperature range.

3. A three-phase thyristor power automatic regulator as claimed in claim 2, characterized in that: The fault protection unit also includes an overvoltage protection module, which is used to cut off the power supply or reduce the output power when the voltage exceeds the rated value of the regulator to ensure that the regulator and the circuit are not damaged.

4. A three-phase thyristor power automatic regulator as claimed in claim 2, characterized in that: The fault protection unit further comprises an undervoltage protection module, which cuts off the power supply when the voltage is lower than the lowest threshold of the regulator to ensure that the regulator and the circuit are not damaged.

5. A three-phase thyristor power automatic regulator as claimed in claim 2, characterized in that: The sensing module includes a current transformer, a voltage sensor and a temperature sensor; The current transformer is used to detect the current in the circuit, and when the current exceeds the set value, a protection mechanism will be triggered; The voltage sensor is used to monitor the voltage status and data in the circuit in real time; The temperature sensor is used to detect temperature data in the regulator.

6. A three-phase thyristor power automatic regulator as claimed in claim 1, characterized in that: The control signal input unit includes a synchronous shaping module, a sawtooth wave generator, a PI regulator, a current amplifier, a pulse generation modulation module and a pulse amplification and voltage transformation module; The synchronous shaping module is used to shape the input AC signal into a square wave signal; The sawtooth wave generator is used to generate a sawtooth wave synchronization signal with the same frequency as the power supply, and the signal is used to compare with the output control signal of the PI regulator to generate a trigger pulse; The PI regulator receives the input control signal and feedback signal, and adjusts the output through proportional and integral operations to achieve constant voltage or constant current control; The current amplifier is used to amplify the current feedback signal; The pulse generation and modulation module generates a trigger pulse according to the comparison result between the output of the PI regulator and the synchronization signal of the sawtooth wave generator, and forms a pulse train signal; The pulse amplification and voltage transformation module is used to amplify the pulse train signal generated by the pulse generation and modulation module.

7. A three-phase thyristor power automatic regulator as claimed in claim 6, characterized in that: The control signal input unit also includes an input interface and a feedback interface; The input interface is used to receive an external control signal; The feedback interface is used to receive a feedback signal of voltage or current from the main circuit to achieve closed-loop control.

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