CN114400906A - Radiation-resistant three-phase capacitor parallel piezoresistor rectifying circuit - Google Patents

Radiation-resistant three-phase capacitor parallel piezoresistor rectifying circuit Download PDF

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Publication number
CN114400906A
CN114400906A CN202111503709.XA CN202111503709A CN114400906A CN 114400906 A CN114400906 A CN 114400906A CN 202111503709 A CN202111503709 A CN 202111503709A CN 114400906 A CN114400906 A CN 114400906A
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China
Prior art keywords
diode
output
piezoresistor
capacitor
input
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Pending
Application number
CN202111503709.XA
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Chinese (zh)
Inventor
王亚德
周青
章明高
郑天际
冯晓花
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Mingzhi Electrical Appliances Taicang Co ltd
Huarong Technology Co Ltd
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Huarong Technology Co Ltd
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Priority to CN202111503709.XA priority Critical patent/CN114400906A/en
Publication of CN114400906A publication Critical patent/CN114400906A/en
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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
    • H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/044—Physical layout, materials not provided for elsewhere
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/045—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage adapted to a particular application and not provided for elsewhere
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
    • 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
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • 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
    • H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
    • H02M7/062—Avoiding or suppressing excessive transient voltages or currents

Abstract

The invention provides an irradiation-resistant three-phase capacitor parallel piezoresistor rectifying circuit, which comprises: the input protection module is connected with a three-phase power supply at the input end, the three-phase power supply is connected with a plurality of piezoresistors in the input protection module, and the three-phase voltage output by the three-phase power supply is subjected to anti-surge protection through each piezoresistor; the rectification output module is connected with the input protection module and the external equipment, rectifies the output voltage of the input protection module through the rectification output module and supplies power to the external equipment; and the input end of the grounding protection module is connected with the second output end of the rectification output module, and the output end of the grounding protection module is grounded to perform grounding protection on the circuit. The circuit has the advantages that the circuit is provided with the piezoresistors, the gas exhaust pipe and the three-phase power supply to be connected so as to perform anti-surge protection on three-phase voltage, the anti-surge protection on the ground is realized by arranging the grounding protection module, and the requirement of irradiation resistance is realized by using the fast recovery diode.

Description

Radiation-resistant three-phase capacitor parallel piezoresistor rectifying circuit
Technical Field
The invention relates to the technical field of three-phase rectifying circuits, in particular to an irradiation-resistant three-phase capacitor parallel piezoresistor rectifying circuit.
Background
The three-phase rectification circuit is a common circuit for connecting a three-phase power supply and a using end, and is mainly used for rectifying three-phase voltage output by the three-phase power supply and outputting the three-phase voltage to the using end.
However, the conventional three-phase rectifier circuit only uses a fuse to perform low-level circuit protection, has no anti-surge protection for the output three-phase voltage, has no anti-surge protection for the grounding end, and has no requirement on radiation resistance of the used diode.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an irradiation-resistant three-phase capacitor parallel piezoresistor rectifying circuit, which comprises:
the input end of the input protection module is connected with an external three-phase power supply, the three-phase power supply is respectively connected with a plurality of piezoresistors in the input protection module, and the three-phase voltage output by the three-phase power supply is subjected to anti-surge protection through each piezoresistor;
the input end of the rectification output module is connected with the output end of the input protection module, the first output end of the rectification output module is connected with an external device, the rectification output module comprises a plurality of diodes connected in series and a plurality of capacitors connected in parallel, the output voltage of the input protection module is rectified through each diode, and the output voltage is filtered through each capacitor so as to supply power to the external device;
and the input end of the grounding protection module is connected with the second output end of the rectification output module, the output end of the grounding protection module is grounded, and the grounding protection module is used for performing grounding protection on the circuit.
Preferably, the input protection module includes:
one end of the first fuse is connected with a first input port, and the other end of the first fuse is connected with a first input end of the rectification output module;
one end of the second fuse is connected with a second input port, and the other end of the second fuse is connected with a second input end of the rectification output module;
one end of the third fuse is connected with a third input port, and the other end of the third fuse is connected with a third input end of the rectification output module;
the first input port, the second input port and the third input port are used as input ends of the input protection module, and the other end of the first fuse, the other end of the second fuse and the other end of the third fuse are used as output ends of the input protection module;
when the three-phase voltage output by the three-phase power supply is larger than the fusing values of the first fuse, the second fuse and the third fuse, the first fuse, the second fuse and the third fuse control the circuit to be disconnected so as to perform overvoltage protection on the circuit.
Preferably, the input protection module further comprises:
one end of the first voltage dependent resistor is respectively connected with the other end of the first fuse and the first input end of the rectification output module;
one end of the first gas discharge tube is connected with the other end of the first piezoresistor, and the other end of the first gas discharge tube is respectively connected with the other end of the second fuse and the second input end of the rectification output module;
the second piezoresistor is connected with the first piezoresistor and the first gas discharge tube in parallel, one end of the second piezoresistor is respectively connected with one end of the first piezoresistor and the first input end of the rectification output module, and the other end of the second piezoresistor is respectively connected with the other end of the first gas discharge tube and the second input end of the rectification output module;
one end of the third piezoresistor is connected with the other end of the second fuse and the second input end of the rectification output module respectively;
one end of the second gas discharge tube is connected with the other end of the third piezoresistor, and the other end of the second gas discharge tube is respectively connected with the other end of the third fuse and the third input end of the rectification output module;
a third gas discharge tube, wherein the third gas discharge tube is connected in parallel with the third varistor and the second gas discharge tube, one end of the third gas discharge tube is respectively connected with one end of the third varistor and the second input end of the rectification output module, and the other end of the third gas discharge tube is respectively connected with the other end of the second gas discharge tube and the third input end of the rectification output module;
and the first piezoresistor, the second piezoresistor, the third piezoresistor, the first gas discharge tube, the second gas discharge tube and the third gas discharge tube are used for carrying out anti-surge protection on the circuit.
Preferably, the rectification output module includes:
the anode of the first diode is connected with the output end of the input protection module, and the cathode of the first diode is connected with an anode output port;
the anode of the second diode is connected with the output end of the input protection module, and the cathode of the second diode is connected with the anode output port;
the anode of the third diode is connected with the output end of the input protection module, and the cathode of the third diode is connected with the anode output port;
the cathode of the fourth diode is connected with the output end of the input protection module, and the anode of the fourth diode is connected with a cathode output port;
a negative electrode of the fifth diode is connected with the output end of the input protection module, and a positive electrode of the fifth diode is connected with the negative electrode output port;
the cathode of the sixth diode is connected with the output end of the input protection module, and the anode of the sixth diode is connected with the cathode output port;
an anode of the first diode and a cathode of the fourth diode are used as the first input end of the rectification output module, an anode of the second diode and a cathode of the fifth diode are used as the second input end of the rectification output module, an anode of the third diode and a cathode of the sixth diode are used as the third input end of the rectification output module, an anode output port and a cathode output port are used as the first output port of the rectification output module, and an anode of the sixth diode and a cathode of the second diode are used as the second output end of the rectification output module;
the first diode, the second diode, the third diode, the fourth diode, the fifth diode and the sixth diode form a rectifier bridge circuit, and the output voltage of the input protection module is rectified by the rectifier bridge circuit and is output to the external device.
Preferably, the first diode, the second diode, the third diode, the fourth diode, the fifth diode, and the sixth diode are all fast recovery diodes.
Preferably, the rectification output module further includes:
one end of the fourth piezoresistor is connected with the cathode of the third diode and the anode output port respectively, and the other end of the fourth piezoresistor is connected with the input end of the grounding protection module;
the first capacitor is connected in parallel with two ends of the fourth piezoresistor;
the second capacitor is connected in parallel with two ends of the first capacitor;
the second capacitor is connected in parallel with two ends of the second capacitor;
the fourth capacitor is connected in parallel with two ends of the third capacitor;
the fourth piezoresistor, the first capacitor, the second capacitor, the third capacitor and the fourth capacitor form a first filter circuit, and the output voltage of the rectifier bridge circuit is filtered and output through the first filter circuit.
Preferably, the rectification output module further includes:
one end of the fifth piezoresistor is connected with the anode output port and the cathode of the third diode respectively, and the other end of the fifth piezoresistor is connected with the cathode output port and the input end of the grounding protection module respectively;
the fifth capacitor is connected in parallel with two ends of the fifth piezoresistor;
the sixth capacitor is connected in parallel with two ends of the fifth capacitor;
the seventh capacitor is connected in parallel with two ends of the sixth capacitor;
the eighth capacitor is connected in parallel with two ends of the seventh capacitor;
the fifth piezoresistor, the fifth capacitor, the sixth capacitor, the seventh capacitor and the eighth capacitor form a second filter circuit, and the output voltage of the first filter circuit is filtered by the second filter circuit and is output to the external device.
Preferably, the ground protection module includes:
one end of the sixth piezoresistor is connected with the second output end of the rectification output module;
one end of the fourth gas discharge tube is connected with the other end of the sixth piezoresistor, and the other end of the sixth piezoresistor is connected with a grounding port;
one end of the ninth capacitor is connected with the second output end of the rectification output module;
one end of the tenth capacitor is connected with the other end of the ninth capacitor, and the other end of the tenth capacitor is connected with the ground port;
one end of the sixth piezoresistor and one end of the ninth capacitor are used as input ends of the grounding protection module, and the grounding port is used as an output end of the grounding protection module.
Preferably, the ground protection module further includes:
one end of the seventh piezoresistor is respectively connected with the other end of the sixth piezoresistor and one end of the fourth gas discharge tube;
one end of the eighth piezoresistor is connected with the other end of the seventh piezoresistor, and the other end of the eighth piezoresistor is respectively connected with the grounding port and the other end of the fourth gas discharge tube;
and the sixth piezoresistor, the fourth gas exhaust pipe, the seventh piezoresistor and the eighth piezoresistor are used for performing anti-surge protection on the circuit to the ground.
Preferably, the ninth capacitor and the tenth capacitor are Y-type safety capacitors.
The technical scheme has the following advantages or beneficial effects: the circuit is connected with a three-phase power supply through the arrangement of the piezoresistors and the gas discharge tubes so as to perform anti-surge protection on three-phase voltage output by the three-phase power supply, the anti-surge protection of the cathode output port to the ground is realized through the arrangement of the grounding protection module, and the requirement of irradiation resistance is realized by using the fast recovery diode.
Drawings
FIG. 1 is an electrical schematic diagram of the present circuit in a preferred embodiment of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present invention is not limited to the embodiment, and other embodiments may be included in the scope of the present invention as long as the gist of the present invention is satisfied.
In a preferred embodiment of the present invention, based on the above problems in the prior art, there is provided an irradiation-resistant three-phase capacitor parallel varistor rectification circuit, as shown in fig. 1, including:
the input end of the input protection module 1 is connected with an external three-phase power supply, the three-phase power supply is respectively connected with a plurality of piezoresistors in the input protection module 1, and the three-phase voltage output by the three-phase power supply is subjected to anti-surge protection through each piezoresistor;
the input end of the rectification output module 2 is connected with the output end of the input protection module 1, the first output end of the rectification output module 2 is connected with an external device, the rectification output module 2 comprises a plurality of diodes which are connected in series and a plurality of capacitors which are connected in parallel, the output voltage of the input protection module 1 is rectified through each diode, and the output voltage is filtered through each capacitor so as to supply power to the external device;
and the input end of the grounding protection module 3 is connected with the second output end of the rectification output module 2, the output end of the grounding protection module 3 is grounded, and the circuit is subjected to grounding protection through the grounding protection module 3.
In a preferred embodiment of the present invention, the input protection module 1 comprises:
a first fuse F1, one end of the first fuse F1 is connected to a first input port L1, and the other end of the first fuse F1 is connected to the first input end of the rectification output module 2;
one end of a second fuse F2, one end of the second fuse F2 is connected to a second input port L2, and the other end of the second fuse F2 is connected to a second input end of the rectification output module 2;
one end of a third fuse F3, one end of the third fuse F3 is connected to a third input port L3, and the other end of the third fuse F3 is connected to a third input end of the rectification output module 2;
the first input port, the second input port and the third input port are used as input ends of the input protection module 1, and the other end of the first fuse F1, the other end of the second fuse F2 and the other end of the third fuse F3 are used as output ends of the input protection module 1;
when the three-phase voltage output by the three-phase power supply is greater than the fusing values of the first fuse F1, the second fuse F2 and the third fuse F3, the first fuse F1, the second fuse F2 and the third fuse F3 control the open circuit to perform overvoltage protection on the circuit.
In a preferred embodiment of the present invention, the input protection module 1 further includes:
one end of the first voltage dependent resistor RV1 is connected to the other end of the first fuse F1 and the first input end of the rectification output module 2 respectively, and one end of the first voltage dependent resistor RV1 is connected to the second input end of the first fuse F1;
one end of the first gas discharge tube GDT1 is connected with the other end of the first piezoresistor RV1, and the other end of the first gas discharge tube GDT1 is connected with the other end of the second fuse F2 and the second input end of the rectification output module 2 respectively;
the second piezoresistor RV2, the second piezoresistor RV2 is connected with the first piezoresistor RV1 and the first gas discharge tube GDT1 in parallel, one end of the second piezoresistor RV2 is respectively connected with one end of the first piezoresistor RV1 and the first input end of the rectification output module 2, and the other end of the second piezoresistor RV2 is respectively connected with the other end of the first gas discharge tube GDT1 and the second input end of the rectification output module 2;
one end of a third piezoresistor RV3, one end of the third piezoresistor RV3 is respectively connected with the other end of the second fuse F2 and the second input end of the rectification output module 2;
one end of the second gas discharge tube GDT2 is connected with the other end of the third varistor RV3, and the other end of the second gas discharge tube GDT2 is connected with the other end of the third fuse F3 and the third input end of the rectification output module 2;
a third gas discharge tube GDT3, the third gas discharge tube GDT3 is connected in parallel with the third varistor RV3 and the second gas discharge tube GDT2, one end of the third gas discharge tube GDT3 is connected to one end of the third varistor RV3 and the second input end of the rectification output module 2, and the other end of the third gas discharge tube GDT3 is connected to the other end of the second gas discharge tube GDT2 and the third input end of the rectification output module 2;
the circuit is subjected to anti-surge protection through a first piezoresistor RV1, a second piezoresistor RV2, a third piezoresistor RV3, a first gas discharge tube GDT1, a second gas discharge tube GDT2 and a third gas discharge tube GDT 3.
Specifically, in the present embodiment, surge protection is implemented between phases of a three-phase power supply through the first varistor RV1, the second varistor RV2, the third varistor RV3, the first gas discharge tube GDT1, the second gas discharge tube GDT2, and the third gas discharge tube GDT 3.
Preferably, the varistor is a device having a transient voltage simulation function, and prevents the circuit from being damaged due to electrostatic discharge, surge and other transient currents, when the voltage across the varistor is higher than a certain value, the resistance of the varistor decreases rapidly, and a large current is conducted, so as to protect the circuit, and when the voltage across the varistor is lower than the working voltage value of the varistor, the resistance of the varistor is very high and is approximately open, so that the normal operation of the circuit is not affected.
Preferably, when a certain voltage is applied between the two poles of the gas discharge tube, an uneven electric field is generated between the two poles, under the action of the electric field, gas in the gas discharge tube starts to dissociate, when the voltage between the two poles is increased to enable the field intensity between the two poles to exceed the insulation strength of the gas, a gap between the two poles is subjected to discharge breakdown, the original insulation state is changed into a conduction state, and the voltage between the two poles of the gas discharge tube is maintained at a residual voltage level determined by a discharge arc channel after the conduction, so that the circuit is not damaged.
In a preferred embodiment of the present invention, the rectification output module 2 includes:
a first diode D1, wherein the anode of the first diode D1 is connected with the output end of the input protection module 1, and the cathode of the first diode D1 is connected with an anode output port V +;
a second diode D2, wherein the anode of the second diode D2 is connected to the output terminal of the input protection module 1, and the cathode of the second diode D2 is connected to the anode output port V +;
a third diode D3, wherein the anode of the third diode D3 is connected to the output terminal of the input protection module 1, and the cathode of the third diode D3 is connected to the anode output port V +;
a fourth diode D4, wherein the cathode of the fourth diode D4 is connected to the output terminal of the input protection module 1, and the anode of the fourth diode D4 is connected to a cathode output port V-;
a fifth diode D5, wherein the cathode of the fifth diode D5 is connected to the output end of the input protection module 1, and the anode of the fifth diode D5 is connected to the cathode output port V-;
a sixth diode D6, wherein the cathode of the sixth diode D6 is connected to the output terminal of the input protection module 1, and the anode of the sixth diode D6 is connected to the cathode output port V-;
the anode of the first diode D1 and the cathode of the fourth diode D4 are used as a first input end of the rectification output module 2, the anode of the second diode D2 and the cathode of the fifth diode D5 are used as a second input end of the rectification output module 2, the anode of the third diode D3 and the cathode of the sixth diode D6 are used as a third input end of the rectification output module 2, the anode output port V + and the cathode output port V-are used as a first output port of the rectification output module 2, and the anode of the sixth diode D6 and the cathode of the second diode D2 are used as a second output end of the rectification output module 2;
the first diode D1, the second diode D2, the third diode D3, the fourth diode D4, the fifth diode D5 and the sixth diode D6 form a rectifier bridge circuit, and the output voltage of the input protection module 1 is rectified by the rectifier bridge circuit and output to an external device.
In the preferred embodiment of the present invention, the first diode D1, the second diode D2, the third diode D3, the fourth diode D4, the fifth diode D5 and the sixth diode D6 are all fast recovery diodes.
Specifically, in this embodiment, the output voltage of the input protection module 1 is rectified by a rectifier bridge circuit composed of the first diode D1, the second diode D2, the third diode D3, the fourth diode D4, the fifth diode D5 and the sixth diode D6, and considering that the conventional rectifier diode cannot meet the irradiation requirement of 50KGy, the fast recovery diode is adopted in this embodiment to meet the irradiation resistance requirement.
In a preferred embodiment of the present invention, the rectification output module 2 further includes:
one end of a fourth piezoresistor RV4, one end of the fourth piezoresistor RV4 is respectively connected with the cathode and anode output ports V + of the third diode D3, and the other end of the fourth piezoresistor RV4 is connected with the input end of the grounding protection module 3;
the first capacitor C1 is connected in parallel with the two ends of the fourth piezoresistor RV4 by the first capacitor C1;
a second capacitor C2, the second capacitor C2 is connected in parallel to two ends of the first capacitor C1;
a third capacitor C3, the third capacitor C3 is connected in parallel to two ends of the second capacitor C2;
a fourth capacitor C4, the fourth capacitor C4 is connected in parallel to two ends of the third capacitor C3;
the fourth piezoresistor RV4, the first capacitor C1, the second capacitor C2, the third capacitor C3 and the fourth capacitor C4 form a first filter circuit, and the output voltage of the rectifier bridge circuit is filtered and output through the first filter circuit.
In a preferred embodiment of the present invention, the rectification output module 2 further includes:
one end of a fifth voltage dependent resistor RV5, one end of the fifth voltage dependent resistor RV5 is respectively connected with the positive electrode output port V + and the negative electrode of the third diode D3, and the other end of the fifth voltage dependent resistor RV5 is respectively connected with the negative electrode output port V-and the input end of the grounding protection module 3;
a fifth capacitor C5, the fifth capacitor C5 is connected in parallel to two ends of the fifth varistor RV 5;
a sixth capacitor C6, the sixth capacitor C6 is connected in parallel to two ends of the fifth capacitor C5;
a seventh capacitor C7, the seventh capacitor C7 is connected in parallel to two ends of the sixth capacitor C6;
an eighth capacitor C8, the eighth capacitor C8 is connected in parallel to two ends of the seventh capacitor C7;
the fifth piezoresistor RV5, the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7 and the eighth capacitor C8 form a second filter circuit, and the output voltage of the first filter circuit is filtered through the second filter circuit and is output to external equipment.
Specifically, in this embodiment, the first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7, and the eighth capacitor C8 are all ceramic filter capacitors, the fourth varistor RV4 and the fifth varistor RV5 are connected in parallel between the positive output port V + and the negative output port V-, and four ceramic filter capacitors are connected in parallel at two ends of the fourth varistor RV4 and two ends of the fifth varistor RV5 for voltage filtering.
Preferably, an electrolytic capacitor or a polypropylene capacitor is not used in the circuit, but a ceramic filter capacitor is used, mainly in consideration of the requirement of radiation resistance, a common circuit only has piezoresistors between a phase and a phase before rectification for surge protection, the piezoresistors are respectively added between a first capacitor C1, a second capacitor C2, a third capacitor C3 and a fourth capacitor C4, and a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7 and an eighth capacitor C8 after rectification in the circuit, so that the stability of the circuit is stronger, and in consideration of the fact that the conventional electrolytic capacitor or film capacitor cannot meet the radiation requirement of 50KGy, the ceramic filter capacitor is adopted to achieve the radiation resistance function.
In a preferred embodiment of the present invention, the ground protection module 3 includes:
one end of the sixth piezoresistor RV6 is connected with the second output end of the rectification output module 2;
one end of a fourth gas discharge tube GDT4, one end of a fourth gas discharge tube GDT4 is connected with the other end of a sixth piezoresistor RV6, and the other end of the sixth piezoresistor RV6 is connected with a grounding port PD;
one end of a ninth capacitor CY1, and one end of the ninth capacitor CY1 are connected to the second output end of the rectification output module 2;
one end of a tenth capacitor CY2, the other end of the ninth capacitor CY1 is connected to one end of the tenth capacitor CY2, and the other end of the tenth capacitor CY2 is connected to the ground port PD;
one end of the sixth piezoresistor RV6 and one end of the ninth capacitor CY1 are used as input ends of the ground protection module 3, and the ground port PD is used as an output end of the ground protection module 3.
In a preferred embodiment of the present invention, the ground protection module 3 further includes:
one end of a seventh piezoresistor RV7, one end of a seventh piezoresistor RV7 are respectively connected with the other end of the sixth piezoresistor RV6 and one end of a fourth gas discharge tube GDT 4;
one end of an eighth piezoresistor RV8, one end of an eighth piezoresistor RV8 is connected with the other end of the seventh piezoresistor RV7, and the other end of the eighth piezoresistor RV8 is respectively connected with the ground port PD and the other end of the fourth gas discharge tube GDT 4;
the circuit is protected against surge through a sixth piezoresistor RV6, a fourth gas exhaust pipe GDT4, a seventh piezoresistor RV7 and an eighth piezoresistor RV 8.
Specifically, in this embodiment, the surge protection function of the negative output port V-to-ground is realized by connecting the sixth piezoresistor RV6, the seventh piezoresistor RV7, the eighth piezoresistor RV8, the fourth gas discharge tube GDT4, the ninth capacitor CY1 and the tenth capacitor CY2 between the negative output port V-and the ground port PD, and the surge protection dual protection is realized by connecting the sixth piezoresistor RV6 and the fourth gas discharge tube GDT4 in series.
Preferably, the piezoresistor is generally inserted between lines to be effective on the induction pulse between the transmission lines and the ground, and the piezoresistor is inserted between the lines and the ground to be effective on the induction pulse between the transmission lines and the ground.
In the preferred embodiment of the present invention, the ninth capacitor CY1 and the tenth capacitor CY2 are Y-type safety capacitors.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.

Claims (10)

1. The utility model provides an irradiation resistant three-phase capacitance shunt resistor rectifier circuit which characterized in that includes:
the input end of the input protection module is connected with an external three-phase power supply, the three-phase power supply is respectively connected with a plurality of piezoresistors in the input protection module, and the three-phase voltage output by the three-phase power supply is subjected to anti-surge protection through each piezoresistor;
the input end of the rectification output module is connected with the output end of the input protection module, the first output end of the rectification output module is connected with an external device, the rectification output module comprises a plurality of diodes connected in series and a plurality of capacitors connected in parallel, the output voltage of the input protection module is rectified through each diode, and the output voltage is filtered through each capacitor so as to supply power to the external device;
and the input end of the grounding protection module is connected with the second output end of the rectification output module, the output end of the grounding protection module is grounded, and the grounding protection module is used for performing grounding protection on the circuit.
2. The radiation-resistant three-phase power supply parallel voltage dependent resistor rectifying circuit of claim 1, wherein the input protection module comprises:
one end of the first fuse is connected with a first input port, and the other end of the first fuse is connected with a first input end of the rectification output module;
one end of the second fuse is connected with a second input port, and the other end of the second fuse is connected with a second input end of the rectification output module;
one end of the third fuse is connected with a third input port, and the other end of the third fuse is connected with a third input end of the rectification output module;
the first input port, the second input port and the third input port are used as input ends of the input protection module, and the other end of the first fuse, the other end of the second fuse and the other end of the third fuse are used as output ends of the input protection module;
when the three-phase voltage output by the three-phase power supply is larger than the fusing values of the first fuse, the second fuse and the third fuse, the first fuse, the second fuse and the third fuse control the circuit to be disconnected so as to perform overvoltage protection on the circuit.
3. The radiation-resistant three-phase power supply parallel voltage dependent resistor rectification circuit of claim 2, wherein the input protection module further comprises:
one end of the first voltage dependent resistor is respectively connected with the other end of the first fuse and the first input end of the rectification output module;
one end of the first gas discharge tube is connected with the other end of the first piezoresistor, and the other end of the first gas discharge tube is respectively connected with the other end of the second fuse and the second input end of the rectification output module;
the second piezoresistor is connected with the first piezoresistor and the first gas exhaust tube in parallel, one end of the second piezoresistor is respectively connected with one end of the first piezoresistor and the first input end of the rectification output module, and the other end of the second piezoresistor is respectively connected with the other end of the first gas exhaust tube and the second input end of the rectification output module;
one end of the third piezoresistor is connected with the other end of the second fuse and the second input end of the rectification output module respectively;
one end of the second gas discharge tube is connected with the other end of the third piezoresistor, and the other end of the second gas discharge tube is respectively connected with the other end of the third fuse and the third input end of the rectification output module;
a third gas bleeding pipe, connected in parallel to the third varistor and the second gas bleeding pipe, and having one end connected to one end of the third varistor and the second input end of the rectification output module, respectively, and the other end connected to the other end of the second gas bleeding pipe and the third input end of the rectification output module, respectively;
and the first piezoresistor, the second piezoresistor, the third piezoresistor, the first gas discharge tube, the second gas discharge tube and the third gas discharge tube are used for carrying out anti-surge protection on the circuit.
4. The radiation-resistant three-phase power supply parallel voltage dependent resistor rectifying circuit of claim 2, wherein the rectifying output module comprises:
the anode of the first diode is connected with the output end of the input protection module, and the cathode of the first diode is connected with an anode output port;
the anode of the second diode is connected with the output end of the input protection module, and the cathode of the second diode is connected with the anode output port;
the anode of the third diode is connected with the output end of the input protection module, and the cathode of the third diode is connected with the anode output port;
the cathode of the fourth diode is connected with the output end of the input protection module, and the anode of the fourth diode is connected with a cathode output port;
a negative electrode of the fifth diode is connected with the output end of the input protection module, and a positive electrode of the fifth diode is connected with the negative electrode output port;
the cathode of the sixth diode is connected with the output end of the input protection module, and the anode of the sixth diode is connected with the cathode output port;
an anode of the first diode and a cathode of the fourth diode are used as the first input end of the rectification output module, an anode of the second diode and a cathode of the fifth diode are used as the second input end of the rectification output module, an anode of the third diode and a cathode of the sixth diode are used as the third input end of the rectification output module, an anode output port and a cathode output port are used as the first output port of the rectification output module, and an anode of the sixth diode and a cathode of the second diode are used as the second output end of the rectification output module;
the first diode, the second diode, the third diode, the fourth diode, the fifth diode and the sixth diode form a rectifier bridge circuit, and the output voltage of the input protection module is rectified by the rectifier bridge circuit and is output to the external device.
5. The radiation-resistant three-phase power supply parallel voltage dependent resistor rectification circuit of claim 4, wherein the first diode, the second diode, the third diode, the fourth diode, the fifth diode and the sixth diode are fast recovery diodes.
6. The radiation-resistant three-phase power supply parallel voltage dependent resistor rectification circuit of claim 4, wherein the rectification output module further comprises:
one end of the fourth piezoresistor is connected with the cathode of the third diode and the anode output port respectively, and the other end of the fourth piezoresistor is connected with the input end of the grounding protection module;
the first capacitor is connected in parallel with two ends of the fourth piezoresistor;
the second capacitor is connected in parallel with two ends of the first capacitor;
the second capacitor is connected in parallel with two ends of the second capacitor;
the fourth capacitor is connected in parallel with two ends of the third capacitor;
the fourth piezoresistor, the first capacitor, the second capacitor, the third capacitor and the fourth capacitor form a first filter circuit, and the output voltage of the rectifier bridge circuit is filtered and output through the first filter circuit.
7. The radiation-resistant three-phase power supply parallel voltage dependent resistor rectification circuit of claim 5, wherein the rectification output module further comprises:
one end of the fifth piezoresistor is connected with the anode output port and the cathode of the third diode respectively, and the other end of the fifth piezoresistor is connected with the cathode output port and the input end of the grounding protection module respectively;
the fifth capacitor is connected in parallel with two ends of the fifth piezoresistor;
the sixth capacitor is connected in parallel with two ends of the fifth capacitor;
the seventh capacitor is connected in parallel with two ends of the sixth capacitor;
the eighth capacitor is connected in parallel with two ends of the seventh capacitor;
the fifth piezoresistor, the fifth capacitor, the sixth capacitor, the seventh capacitor and the eighth capacitor form a second filter circuit, and the output voltage of the first filter circuit is filtered by the second filter circuit and is output to the external device.
8. The radiation-resistant three-phase power supply parallel voltage dependent resistor rectifying circuit of claim 1, wherein the ground protection module comprises:
one end of the sixth piezoresistor is connected with the second output end of the rectification output module;
one end of the fourth gas exhaust pipe is connected with the other end of the sixth piezoresistor, and the other end of the sixth piezoresistor is connected with a grounding port;
one end of the ninth capacitor is connected with the second output end of the rectification output module;
one end of the tenth capacitor is connected with the other end of the ninth capacitor, and the other end of the tenth capacitor is connected with the ground port;
one end of the sixth piezoresistor and one end of the ninth capacitor are used as input ends of the grounding protection module, and the grounding port is used as an output end of the grounding protection module.
9. The radiation-resistant three-phase power supply parallel voltage dependent resistor rectification circuit of claim 8, wherein the ground protection module further comprises:
one end of the seventh piezoresistor is respectively connected with the other end of the sixth piezoresistor and one end of the fourth gas exhaust pipe;
one end of the eighth piezoresistor is connected with the other end of the seventh piezoresistor, and the other end of the eighth piezoresistor is respectively connected with the grounding port and the other end of the fourth gas discharging pipe;
and the sixth piezoresistor, the fourth gas exhaust pipe, the seventh piezoresistor and the eighth piezoresistor are used for performing anti-surge protection on the circuit to the ground.
10. The radiation-resistant three-phase power supply parallel voltage dependent resistor rectifying circuit according to claim 8, wherein the ninth capacitor and the tenth capacitor are Y-type safety capacitors.
CN202111503709.XA 2021-12-09 2021-12-09 Radiation-resistant three-phase capacitor parallel piezoresistor rectifying circuit Pending CN114400906A (en)

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Application Number Priority Date Filing Date Title
CN202111503709.XA CN114400906A (en) 2021-12-09 2021-12-09 Radiation-resistant three-phase capacitor parallel piezoresistor rectifying circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111503709.XA CN114400906A (en) 2021-12-09 2021-12-09 Radiation-resistant three-phase capacitor parallel piezoresistor rectifying circuit

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CN114400906A true CN114400906A (en) 2022-04-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114726242A (en) * 2022-04-27 2022-07-08 华荣科技股份有限公司 Radiation-resistant three-phase multiple protection rectifying circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114726242A (en) * 2022-04-27 2022-07-08 华荣科技股份有限公司 Radiation-resistant three-phase multiple protection rectifying circuit

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