CN110022053A - It is a kind of to inhibit the three phase rectifier of function to protect circuit with inrush current - Google Patents
It is a kind of to inhibit the three phase rectifier of function to protect circuit with inrush current Download PDFInfo
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- CN110022053A CN110022053A CN201910250284.2A CN201910250284A CN110022053A CN 110022053 A CN110022053 A CN 110022053A CN 201910250284 A CN201910250284 A CN 201910250284A CN 110022053 A CN110022053 A CN 110022053A
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- circuit
- inrush current
- inhibit
- function
- relay
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- 238000012544 monitoring process Methods 0.000 claims abstract description 17
- 230000001629 suppression Effects 0.000 claims abstract description 15
- 230000000452 restraining effect Effects 0.000 claims abstract description 5
- 230000006870 function Effects 0.000 claims description 25
- 230000005611 electricity Effects 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 9
- 230000001052 transient effect Effects 0.000 claims description 5
- 230000009131 signaling function Effects 0.000 claims 1
- 230000002401 inhibitory effect Effects 0.000 abstract description 3
- 230000005764 inhibitory process Effects 0.000 abstract description 2
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
- H02M7/12—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
- H02M7/21—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 triode or transistor type requiring continuous application of a control signal
- H02M7/217—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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/2173—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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a biphase or polyphase circuit arrangement
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
A kind of three phase rectifier protection circuit inhibiting function with inrush current disclosed by the invention, can solve the technical issues of existing rectification circuit unit cannot inhibit inrush current.It is sequentially connected including sequentially connected input filter circuit, inrush current suppression circuit, transformer and its rectifying output circuit, monitoring and control circuit；Inrush current suppression circuit includes main contactor K101 and relay K102, there are main contactor K101 three groups of normally opened contacts to be used to connect three phase supply end U, V, W of input and three phase supply end U1, V1 and W1 of rear class, relay K102 has four groups of normally opened contacts, wherein it is separately connected Inrush current restraining resistance for three groups, another set is for controlling main contactor K101 power supply；The control signal of monitoring and control circuit is concatenated R104 to triode V103 for controlling relay K102 power supply；The present invention is a kind of superior three-phase power circuit for collecting inrush current inhibition and defencive function, and principle is simple, high reliablity, and performance is brilliant.
Description
Technical field
The present invention relates to field of circuit technology, and in particular to a kind of to inhibit the three phase rectifier of function to protect with inrush current
Protection circuit.
Background technique
With social progress and its continuous renewal of power technology and development, the requirement of high quality electric energy power supply is increasingly
It is more, therefore the requirement to the function and performance of the power supply as electric energy Switching Core is also higher and higher.Since electric system uses
Alternating current is transmitted, therefore rectifier power source just inevitably becomes unit or portion indispensable in electric energy conversion electric power
Point, and its application range is also more and more extensive, plays important work in numerous areas such as military affairs, medical treatment, traffic, industrial productions
With.In military radar field, as the continuous increase rectifier power source of radar power is also applied more frequently, thus to rectifier power source
The requirements such as reliability, safety, technical performance it is also all the more stringent.For this purpose, the rectifier power source in military radar power applications
It is essential to have the requirement for carrying out protection shutdown extremely to inrush current limitation and power work.
Typically, the part or unit that rectification circuit unit is only used as in conversion electric power occur, in this way to input
The inhibition and protection shutdown of surge current require can realize by carrying out processing in rectification rear end；However as electricity consumption
The continuous increase of plant capacity, especially requirement of the military radar front to weight is further stringent, so that rectifier circuit portion must
Palpus independent design is at the rectifier power source for meeting power reguirements.As individual rectifier power source, must independently have input surge
Current inhibiting function and various perfect error protection shut-off functions etc..
Summary of the invention
A kind of three phase rectifier protection circuit inhibiting function with inrush current proposed by the present invention, can solve existing
Rectification circuit unit cannot inhibit inrush current and cannot function as the technical issues of independent rectifier power source uses.
To achieve the above object, the invention adopts the following technical scheme:
It is a kind of to inhibit the three phase rectifier of function to protect circuit, including input filter circuit, transformer with inrush current
And its rectifying output circuit, it further include that inrush current inhibits protection circuit, auxiliary power circuit, monitoring and control circuit；
The input filter circuit, inrush current suppression circuit, transformer and its rectifying output circuit, monitoring and control
Circuit processed is sequentially connected；
If U, V and W is from the three-phase input after input filter, U1, V1 and W1 are then to be inputted Surge suppression protection
The three-phase input as transformer after circuit；
Wherein, three phase supply end U, V, the W and rear class that there are main contactor K101 three groups of normally opened contacts to be used to connect input
Three phase supply end U1, V1 and W1, relay K102 has four groups of normally opened contacts, wherein three groups are separately connected Inrush current restraining electricity
Resistance, another set connect the line winding of main contactor K101 then to control the power supply of the line packet of main contactor K101；
The control signal of monitoring and control circuit is concatenated R104 to triode V103, triode V103 and relay K102
Line winding connection with control relay K102 power supply；
Auxiliary power circuit is respectively main contactor K101, relay K102, monitoring and control circuit power supply.
It further, further include control resistance R105, R105 is connected between the base stage and emitter of triode V103.
Further, the line winding series connection Transient Suppression Diode V101 of the contactor K101.
Further, the line winding series connection Transient Suppression Diode V102 of the relay K102.
Further, fuse is arranged in the input terminal of the input filter circuit.
Further, the auxiliary power circuit is AC/DC auxiliary power circuit, the input of the auxiliary power circuit from
The front end of the inrush current suppression circuit takes electricity.
Further, fuse is arranged in the input terminal of the auxiliary power circuit.
It is as shown from the above technical solution, of the invention to inhibit the three phase rectifier of function to protect circuit with inrush current,
Inrush current may be implemented and inhibit function and three phase rectifier defencive function.The circuit is that collection inrush current inhibits and protects
A kind of superior three-phase power circuit of protective function, principle is simple, high reliablity, and performance is brilliant, provides one for related application
Kind feasible scheme.
Detailed description of the invention
Fig. 1 is rectification power circuit schematic diagram of the invention；
Fig. 2 is that the three phase rectifier of the invention inhibited with inrush current protects circuit.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.
Circuit diagram as shown in Figure 1 it is found that rectifier power source mainly by input filter circuit, auxiliary power circuit, change
Depressor and its rectifying output circuit, monitoring and control circuit and inrush current inhibit and fault secure circuit composition.Wherein
Inrush current inhibit and fault secure circuit be then to be made of contactor K101, relay K102 and peripheral circuit.
Each component part of rectifier power source is introduced respectively below.
Input filter circuit part: it is suitable that input filter circuit can be designed according to the EMC Requirements of rectifier power source
Three phase mains filter realizes that input specification can also be adapted to according to the requirement of rectifier power source, such as 380V50Hz or
115V400Hz.The application of fuse F101, F102 and F103 are inputted primarily to preventing input filter circuit failure or preventing
Caused by the input current of rectifier power source is excessive the problem of rectifier power source rear class device failure, it is suitable to choose as needed
Fuse type.
Auxiliary power circuit part: for providing power supply for the circuit that detects and controls of rectifier power source, while relay to be used for
The control power supply of device and contactor uses.The part can choose suitable output voltage according to auxiliary electrical specification, can also basis
The form of input is realized using single-phase AC/DC or three-phase AC/DC.It is worth noting that the input of accessory power supply must be from input wave
Gush that electric current inhibits and the front end of protection circuit takes electricity, otherwise then rectifier power source powers on and just can not carry out starting work without accessory power supply
Make.Fuse F201, F202 and F203 of input terminal are used for the safeguard measure under accessory power supply abnormal conditions, can select according to demand
Take suitable specification.
Transformer and its rectifying output circuit part: transformer and rectifying output circuit are for realizing AC-to DC output
Conversion, transformer therein can be according to the performance requirement of rectifier power source by the way of isolation or the mode be not isolated, can also
Choose more pulse waves, such as 18 pulse waves according to the requirement of harmonic wave and power factor, transformer realize.In addition, according to rectifier power source
Detection control requires to need corresponding configuration output voltage and exports the detection sensing device of electric current, convenient for guarantor in abnormal cases
Shield.
Monitoring and control circuit part: this part is used to control the switching on and shutting down of rectifier power source, while detecting rectifier power source
Input, output and its temperature information, for the power protection and its working condition reporting functions under abnormal conditions.It is passed by communication
Defeated achievable remote control operation and monitoring, offer convenience for power supply application.
Inrush current inhibits and fault secure circuit part: our department is divided into the suppression of three-phase rectifier power supply inrush current
The key component of system and error protection, is realized in such a way that relay is used cooperatively with contactor, now by the work of this part
It is as follows that principle carries out detailed analysis:
By the three phase rectifier protection circuit as shown in Figure 2 inhibited with inrush current it is found that our department's parallel circuit is by leading
Contactor K101, relay K102, inrush current inhibit resistance R101, R102 and R103, control section R104, R105,
Transient Suppression Diode V101, V102 of V103, contactor and relay line packet and the 24V power supply powered by line packet form.
24V therein from accessory power supply export, booting and protection control Ctrl signal from monitoring and control circuit part,
U, for V and W from the three-phase input after input filter, U1, V1 and W1 are then after being inputted Surge suppression and protection circuit
Three-phase input as transformer.
Circuit operation principle analysis: relay K102 has four groups of normally opened contacts, wherein three groups of connection Inrush current restraining electricity
Resistance, another set connect the line winding of main contactor then to control the power supply of the line packet of main contactor；Main contactor has three groups
Normally opened contact is used to connect three phase supply end U, V, W of input and three phase supply end U1, V1 and W1 of rear class, as shown in Figure 2.It is whole
After flowing power supply electrifying, it is that monitoring control circuit is powered that accessory power supply, which first starts work to establish 24V output, when monitoring control circuit is given
Out after starting-up signal Ctrl, triode V103 is connected so that the coil power supply of relay K102 is established, so as to cause relay
Four groups of contacts of K102 are attracted, so that the coil power supply of contactor K101 is established, three groups of main touchings of last contactor K101
Point, which is attracted, makes rectifier power source completion start-up course enter normal operating conditions.The starting buffering course master that inrush current inhibits
Rely in the actuation time of contactor K101 (pickup time of contactor is generally in a few tens of milliseconds) realization, during this by
It has been attracted in relay K102, therefore input current can first pass through relay K102 through Inrush current restraining electricity in start-up course
Resistance R101, R102 and R103 are the capacitor charging for rectifying rear end；According to the pickup time Rational choice electricity for choosing contactor K101
The purpose that stream inhibits the resistance value of resistance R101, R102 and R103 and specification that can realize that inrush current inhibits.And when rectification
To when there is needing fault condition to be protected, monitoring control circuit will provide off signal Ctrl and make triode power detecting
V103 shutdown so that the contact relay K102 discharge, and cause the contact contactor K101 discharge, finally by three-phase input U,
V, input U1, V1, W1 of W and transformer are fully disconnected, and realize the shutdown defencive function of rectification circuit.It can be seen that this circuit
Inrush current can be inhibited to roll into one with three phase rectifier defencive function.
By above-mentioned principle analysis it is found that inrush current, which may be implemented, in the circuit inhibits function and three phase rectifier
Defencive function.In order to verify the practical application effect of circuit, this circuit is applied in the rectifier power source of Mr. Yu's airborne radar power supply,
And the test and long-term work verifying of various functions are carried out.Confirm the circuit no matter in input surge by using verifying situation
Electric current inhibits have superior performance in terms of aspect or error protection.Therefore, the circuit be collection inrush current inhibit and
A kind of superior three-phase power circuit of defencive function, principle is simple, high reliablity, and performance is brilliant, provides for related application
A kind of feasible scheme.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (7)
1. it is a kind of with inrush current inhibit function three phase rectifier protect circuit, including input filter circuit, transformer and
Its rectifying output circuit, it is characterised in that: further include inrush current inhibit protection circuit, auxiliary power circuit, monitoring and
Control circuit；
The input filter circuit, inrush current suppression circuit, transformer and its rectifying output circuit, monitoring and control electricity
Road is sequentially connected；
Wherein, the inrush current suppression circuit includes main contactor K101 and relay K102, main contactor K101 tool
There are three groups of normally opened contacts for connecting three phase supply end U, V, W of input and three phase supply end U1, V1 and W1 of rear class, relay
K102 has four groups of normally opened contacts, wherein three groups are separately connected Inrush current restraining resistance, another set then connects main contactor
The line winding of K101 is powered with the line packet for controlling main contactor K101；
The control signal of monitoring and control circuit is concatenated R104 to triode V103, the line of triode V103 and relay K102
Winding connection is to control relay K102 power supply；
Auxiliary power circuit is respectively main contactor K101, relay K102, monitoring and control circuit power supply.
2. according to claim 1 inhibit the three phase rectifier of function to protect circuit with inrush current, it is characterised in that:
The one end resistance R105 is connected to the base stage of triode V103, and the other end is connected to the emitter of triode V103, for true
Protect triode V103 reliably conducting and cut-off in the case where controlling signal function.
3. according to claim 1 inhibit the three phase rectifier of function to protect circuit with inrush current, it is characterised in that:
The line winding series connection Transient Suppression Diode V101 of the main contactor K101.
4. according to claim 1 inhibit the three phase rectifier of function to protect circuit with inrush current, it is characterised in that:
The line winding series connection Transient Suppression Diode V102 of the relay K102.
5. according to claim 1 inhibit the three phase rectifier of function to protect circuit with inrush current, it is characterised in that:
Fuse is arranged in the input terminal of the input filter circuit.
6. according to claim 1 inhibit the three phase rectifier of function to protect circuit with inrush current, it is characterised in that:
The auxiliary power circuit is AC/DC auxiliary power circuit, and the input of the auxiliary power circuit is from the inrush current
The front end of suppression circuit takes electricity.
7. according to claim 6 inhibit the three phase rectifier of function to protect circuit with inrush current, it is characterised in that:
Fuse is arranged in the input terminal of the auxiliary power circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910250284.2A CN110022053B (en) | 2019-03-29 | 2019-03-29 | Three-phase rectification protection circuit with input surge current suppression function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910250284.2A CN110022053B (en) | 2019-03-29 | 2019-03-29 | Three-phase rectification protection circuit with input surge current suppression function |
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| CN110022053A true CN110022053A (en) | 2019-07-16 |
| CN110022053B CN110022053B (en) | 2024-03-29 |
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| CN208257394U (en) * | 2018-05-17 | 2018-12-18 | 沧州泰鑫精密铸造有限公司 | A kind of Electric Circuit for Protecting Three-phrase Alternatiy |
| CN109217273A (en) * | 2018-11-20 | 2019-01-15 | 艾乐德电子（南京）有限公司 | One kind turning off the power switch undelayed anti-surge circuit |
| CN209748404U (en) * | 2019-03-29 | 2019-12-06 | 合肥华耀电子工业有限公司 | Three-phase rectification protection circuit with input surge current suppression function |
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| CN110022053B (en) | 2024-03-29 |
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