CN107370354A - A kind of AC input current Surge suppression system - Google Patents
A kind of AC input current Surge suppression system Download PDFInfo
- Publication number
- CN107370354A CN107370354A CN201710494981.3A CN201710494981A CN107370354A CN 107370354 A CN107370354 A CN 107370354A CN 201710494981 A CN201710494981 A CN 201710494981A CN 107370354 A CN107370354 A CN 107370354A
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- resistance
- circuit
- igct
- suppression
- rectifier bridge
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—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
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The present invention relates to a kind of AC input current Surge suppression system, including：Suppression circuit and control circuit；Suppression circuit is accessed in circuit after including a resistance and IGCT parallel connection, for the size of limit inrush currents, plays the protection to circuit devcie；Control circuit is connected with suppression circuit, by controlling the opening and closing of IGCT in suppression circuit to reduce the power attenuation of suppression circuit in circuit.Current surge suppresses the presence of resistance, effectively reduces impact of the surge current to circuit devcie；In resistance both ends parallel thyristors, effectively solution power attenuation as caused by resistance in circuit normal processes.
Description
Technical field
The present invention relates to technical field of circuit control, more particularly to a kind of AC input current Surge suppression system.
Background technology
Surge current is that AC power connects moment, because input energy storage filter capacitor charges rapidly, and caused one kind
Much larger than the peak point current of equipment steady state operating current, it has necessarily to device interior rectifier bridge, fuse and electromagnetic interface filter
Percussion, the final reliability for influenceing equipment and life-span.
At present, the method for conventional suppression inrush current is that current-limiting resistance is sealed in rectification circuit, such as Fig. 1 institutes
Show, its operation principle is：In rectification outlet side one less resistance of series connection, the current limliting for circuital current.Inputted in exchange
Moment is closed, electric capacity C1 is close to short-circuit condition, and caused dash current is very big in circuit, exists if any resistance R1, because of its partial pressure
Effect, can in limiting circuit electric current size, finally play the effect of each device in protection circuit.
Traditional surge current suppression circuit can meet certain use occasion.But its shortcoming is：Resistance R1 resistance values
The more difficult assurance of selection, if resistance R1 resistances are too small, caused instantaneous power can be very big on the resistance, and to surge electricity
The inhibitory action unobvious of stream, it is impossible to play good circuit protection effect.Resistance value increase, which can be played, preferably suppresses surge
The effect of electric current, but resistance value can not be selected excessive, and otherwise the power attenuation of circuit can be larger, and electric capacity C1 chargings can be very slow.
The content of the invention
In view of above-mentioned analysis, the present invention is intended to provide a kind of AC input current Surge suppression system, to solve to pass
When resistance is larger in system scheme, consumption many technical problems such as power is larger at resistance both ends.
The purpose of the present invention is mainly achieved through the following technical solutions：
In based on one embodiment of the present of invention, there is provided a kind of AC input current Surge suppression system, including：Suppression
Circuit processed and control circuit；Suppression circuit is accessed in circuit after including a resistance and IGCT parallel connection, for limiting surge electricity
The size of stream, play the protection to circuit devcie；Control circuit is connected with suppression circuit, by controlling IGCT in suppression circuit
Opening and closing reduce suppression circuit power attenuation in circuit.
In based on another of present system embodiment, suppression circuit includes resistance R1, resistance R2, resistance R3, electricity
Hold C1, rectifier bridge V1, IGCT V2；It is direct current first by rectifier bridge V1 rectifications after exchange is electrically accessed suppression circuit, resistance
R1 one end, resistance R2 one end, IGCT V2 negative electrode are connected with rectifier bridge V1 negative output terminal；The resistance R1 other end,
IGCT V2 anode is connected with electric capacity C1 negative electrode；Rectifier bridge V1 positive output end is connected with electric capacity C1 anode；Resistance R2
The other end be connected with resistance R3 one end, IGCT V2 gate pole；The resistance R3 other end, rectifier bridge V1 positive output end and
Negative output terminal is connected with control circuit respectively, inputs control signal.
In based on another of present system embodiment, control circuit includes resistance R4, R5, R6, R7, comparator N1
With triode V3；R6 is connected after being connected with R7 between rectifier bridge V1 positive output end and negative output terminal, R6 and R7 junction with
N1 negative input end connection, N1 positive input terminal input reference voltage Vref；N1 positive power source terminal is connected with+15V power supplys, N1's
Earth terminal and V1 negative output terminal connect, and N1 output end and R4 one end connect, the R4 other end one end with R5, V3 respectively
Base stage connection, the emitter stage with V3 ,+15V power supplys be connecteds the R5 other end respectively, V3 colelctor electrode and R3 other end company
Connect, output control signal.
In based on another of present system embodiment, brilliant lock is passed through by the proportionate relationship control of R2 and R3 resistances
Pipe V2 driving current.
In based on another of present system embodiment, input rectifying bridge is 380V alternating currents, integrates output 540V
During direct current, R6 takes 7.5K Ω, R7 to take 820K Ω.
In based on another of present system embodiment, when just having started work, comparator N1 reverse input end electricity
To force down in 3 pin voltages, N1 output end output is high level, and triode V3 is not turned on, then IGCT V2 is without gate electrode drive signals,
In blocking state, circuit is charged by resistance R1 for electric capacity C1；With the rising of busbar voltage, comparator N1 reverse input
The voltage at end is final to be higher than 3 pin voltages, and the output of 1 pin is low, triode V3 conductings, produces IGCT V2 gate electrode drive signals,
In the presence of the signal, IGCT V2 conductings, resistance R1 is short-circuited in circuit, and electric current is that electric capacity C1 fills by IGCT V2
Electricity.
In based on another of present system embodiment, the concrete model of IGCT is 30TPS08.
The present invention has the beneficial effect that：
Current surge suppresses the presence of resistance, effectively reduces impact of the surge current to circuit devcie；At resistance both ends simultaneously
Join IGCT, effectively solution power attenuation as caused by resistance in circuit normal processes.
Other features and advantages of the present invention will illustrate in the following description, also, partial become from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by the explanations write
Specifically noted structure is realized and obtained in book, claims and accompanying drawing.
Brief description of the drawings
Accompanying drawing is only used for showing the purpose of specific embodiment, and is not considered as limitation of the present invention, in whole accompanying drawing
In, identical reference symbol represents identical part.
Fig. 1 is conventional surge current suppressing circuit；
Fig. 2 is the Inrush current restraining system in one embodiment of the invention.
Embodiment
The preferred embodiments of the present invention are specifically described below in conjunction with the accompanying drawings, wherein, accompanying drawing forms the application part, and
It is used for the principle for explaining the present invention together with embodiments of the present invention.
The embodiment of the present application provides a kind of AC input current Surge suppression system, exchanges DC voltage after input rectifying
Rear class filtering electric capacity is charged, because electric capacity both end voltage can not be mutated, impact DC voltage, surge current can be produced.In order to
Suppress surge current, increase resistance R1, DC voltage is charged by R1 to electric capacity C1, can effectively suppress surge current.Pass through inspection
Magnitude of voltage needed for surveying the arrival of C1 charging voltages, compared with presetting reference voltage value, passes through IGCT V2 driving resistance R2
Open-minded with R3 control IGCTs V2, short-circuit R1, major loop produces loss after avoiding circuit normal work.
A kind of AC input current Surge suppression system, as shown in Fig. 2 including：Suppression circuit and control circuit；Suppress electricity
Road is used for the size of limit inrush currents, plays the protection to circuit devcie；Control circuit is connected with suppression circuit, for reducing
The power attenuation of suppression circuit in circuit.
Wherein suppression circuit includes resistance R1, resistance R2, resistance R3, electric capacity C1, rectifier bridge V1, IGCT V2, such as accompanying drawing 2
It is shown；It is direct current first by rectifier bridge V1 rectifications after exchange is electrically accessed suppression circuit, resistance R1 one end, resistance R2
One end, IGCT V2 negative electrode are connected with rectifier bridge V1 negative output terminal；The resistance R1 other end, IGCT V2 anode and electricity
Hold C1 cathode wire connection；Rectifier bridge V1 positive output end is connected with electric capacity C1 anode；The resistance R2 other end and resistance
R3 one end, IGCT V2 gate pole connection；The resistance R3 other end, rectifier bridge V1 positive output end and negative output terminal respectively with
Control circuit connects, and inputs control signal.Controlled by R2 and R3 proportionate relationship and be used for by IGCT V2 driving current
Protection circuit component.
Control circuit includes resistance R4, R5, R6, R7, comparator N1 and triode V3；R6 is connected rectifier bridge after being connected with R7
Between V1 positive output end and negative output terminal, the negative input end connection of R6 and R7 junction and N1, N1 positive input terminal input
Reference voltage V ref, in one particular embodiment of the present invention, Vref is redefined for 5.1V；N1 positive power source terminal and+15V
Power supply connects, and N1 earth terminal and V1 negative output terminal connect, and N1 output end and R4 one end connect, R4 other end difference
The base stage of one end, V3 with R5 is connected, and the emitter stage with V3 ,+15V power supplys are connected the R5 other end respectively, V3 colelctor electrode with
R3 other end connection, output control signal.
In one particular embodiment of the present invention, R1 is 280 Ω, and R2 is 75 Ω, and R3 is 130 Ω, and C1 is 660 μ F, V1
For FUO 22-16N, V2 30TPS08, R4 are 2K Ω, R5 is 3K Ω, R6 is that 7.5K Ω (are suitable for 380V AC rectifications
The requirement of 540V direct currents), R7 be 820K Ω, N1 LM193, V3 S8550.
It is direct current by rectifier bridge V1 rectifications, the V+ voltages after rectifier bridge V1 rectifications pass through resistance after exchange electrically connects
Comparator N1 negative terminal is sent to after R6 and R7 partial pressures, compared with the Vref reference voltages of comparator N1 positive input, just
When starting work, comparator N1 reverse input end voltage be less than 3 pin voltages, and it is high level that N1 output end, which exports, triode
V3 is not turned on, then for IGCT V2 without gate electrode drive signals, IGCT V2 is in blocking state, and circuit is electric capacity C1 by resistance R1
Charging.Resistance R1 plays a part of suppressing exchange inrush current in this process, but certain work(can be produced on its resistance
Rate is lost.With the rising of busbar voltage, the voltage of comparator N1 reverse input end is final to be higher than 3 pin voltages, and the output of 1 pin is
It is low, triode V3 conductings, IGCT V2 gate electrode drive signals are produced, in the presence of the signal, IGCT V2 is turned on, resistance
R1 is short-circuited in circuit, excision.Electric current is charged by IGCT V2 for electric capacity C1.Because turn on thyristors resistance is extremely low, at it
Power attenuation caused by upper is also extremely low, and at circuit start initial stage, due to resistance R1 presence, serves suppression surge current
Effect.
In summary, the operation principle of AC input current surge restraint circuit is：Initial stage is electrically connected in exchange, passes through electricity
The size of current-limiting resistance limit inrush currents in road, plays the protection to circuit devcie.To reduce the resistance in circuit
Power attenuation, by way of resistor coupled in parallel IGCT, after circuit start, leading for IGCT is realized by giving gate signal
It is logical, so as to short-circuit resistance, the normal work of start circuit.The circuit is the shock problem for solving surge current, is also solved
Because of the presence of resistance and caused by power dissipation concerns.Circuit form of the present invention is novel, and simple in construction, cost is low, can meet
The demand of most of input circuit, it can apply in all kinds of electrical equipments.
The present invention has the beneficial effect that：Current surge suppresses the presence of resistance, effectively reduces surge current to circuit devcie
Impact；In resistance both ends parallel thyristors, effectively solution power attenuation as caused by resistance in circuit normal processes.
It will be understood by those skilled in the art that realizing all or part of flow of above-described embodiment method, meter can be passed through
Calculation machine program instructs the hardware of correlation to complete, and described program can be stored in computer-readable recording medium.Wherein, institute
Computer-readable recording medium is stated as disk, CD, read-only memory or random access memory etc..
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.
Claims (7)
- A kind of 1. AC input current Surge suppression system, it is characterised in that including：Suppression circuit and control circuit；Suppress electricity Road is accessed in circuit after including a resistance and IGCT parallel connection, for the size of limit inrush currents, is played to circuit devcie Protection；Control circuit is connected with suppression circuit, by controlling the opening and closing of IGCT in suppression circuit to reduce suppression circuit in electricity Power attenuation in road.
- 2. the system as claimed in claim 1, it is characterised in that suppression circuit includes resistance R1, resistance R2, resistance R3, electric capacity C1, rectifier bridge V1, IGCT V2；It is direct current first by rectifier bridge V1 rectifications after exchange is electrically accessed suppression circuit, resistance R1 One end, resistance R2 one end, IGCT V2 negative electrode be connected with rectifier bridge V1 negative output terminal；The resistance R1 other end, crystalline substance Brake tube V2 anode is connected with electric capacity C1 negative electrode；Rectifier bridge V1 positive output end is connected with electric capacity C1 anode；Resistance R2's The other end is connected with resistance R3 one end, IGCT V2 gate pole；The resistance R3 other end, rectifier bridge V1 positive output end and negative Output end is connected with control circuit respectively, inputs control signal.
- 3. system as claimed in claim 2, it is characterised in that control circuit includes resistance R4, R5, R6, R7, comparator N1 and Triode V3；R6 is connected after being connected with R7 between rectifier bridge V1 positive output end and negative output terminal, R6 and R7 junction and N1 Negative input end connection, N1 positive input terminal input reference voltage Vref；N1 positive power source terminal is connected with+15V power supplys, and N1's connects Ground terminal and V1 negative output terminal connect, and N1 output end and R4 one end connect, the R4 other end one end with R5, V3 respectively Base stage is connected, and the emitter stage with V3 ,+15V power supplys are connected the R5 other end respectively, and V3 colelctor electrode and the R3 other end connect, Output control signal.
- 4. system as claimed in claim 3, it is characterised in that IGCT is passed through by the proportionate relationship control of R2 and R3 resistances V2 driving current.
- 5. system as claimed in claim 4, it is characterised in that input rectifying bridge is 380V alternating currents, and it is straight to integrate output 540V When flowing electric, R6 takes 7.5K Ω, R7 to take 820K Ω.
- 6. system as claimed in claim 5, it is characterised in that when just having started work, comparator N1 reverse input end voltage Less than 3 pin voltages, N1 output end output is high level, and triode V3 is not turned on, then IGCT V2 is without gate electrode drive signals, place In blocking state, circuit is charged by resistance R1 for electric capacity C1；With the rising of busbar voltage, comparator N1 reverse input end Voltage it is final be higher than 3 pin voltages, the output of 1 pin is low, triode V3 conductings, generation IGCT V2 gate electrode drive signals, In the presence of the signal, IGCT V2 conductings, resistance R1 is short-circuited in circuit, and electric current is that electric capacity C1 fills by IGCT V2 Electricity.
- 7. the system as described in claim any one of 1-6, it is characterised in that the concrete model of the IGCT is 30TPS08.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710494981.3A CN107370354B (en) | 2017-06-26 | 2017-06-26 | A kind of AC input current Surge suppression system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710494981.3A CN107370354B (en) | 2017-06-26 | 2017-06-26 | A kind of AC input current Surge suppression system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107370354A true CN107370354A (en) | 2017-11-21 |
| CN107370354B CN107370354B (en) | 2019-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710494981.3A Active CN107370354B (en) | 2017-06-26 | 2017-06-26 | A kind of AC input current Surge suppression system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199568A (en) * | 2018-01-05 | 2018-06-22 | 西安电子工程研究所 | A kind of inhibition in-rush current limiting circuit |
| CN110719041A (en) * | 2018-07-13 | 2020-01-21 | 意法半导体有限公司 | Power conversion circuit with inrush current limiting resistor bypass |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694938A (en) * | 2009-10-27 | 2010-04-14 | 浪潮电子信息产业股份有限公司 | Surging current suppression method |
| CN202260437U (en) * | 2011-10-13 | 2012-05-30 | 深圳Tcl新技术有限公司 | Low-power surge eliminating circuit and switching power supply |
| CN202840933U (en) * | 2012-11-07 | 2013-03-27 | 洛阳隆盛科技有限责任公司 | AC slow-startup circuit |
| CN205377275U (en) * | 2016-01-12 | 2016-07-06 | 陕西华讯科技有限公司 | Surge current inhibitor |
-
2017
- 2017-06-26 CN CN201710494981.3A patent/CN107370354B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694938A (en) * | 2009-10-27 | 2010-04-14 | 浪潮电子信息产业股份有限公司 | Surging current suppression method |
| CN202260437U (en) * | 2011-10-13 | 2012-05-30 | 深圳Tcl新技术有限公司 | Low-power surge eliminating circuit and switching power supply |
| CN202840933U (en) * | 2012-11-07 | 2013-03-27 | 洛阳隆盛科技有限责任公司 | AC slow-startup circuit |
| CN205377275U (en) * | 2016-01-12 | 2016-07-06 | 陕西华讯科技有限公司 | Surge current inhibitor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199568A (en) * | 2018-01-05 | 2018-06-22 | 西安电子工程研究所 | A kind of inhibition in-rush current limiting circuit |
| CN110719041A (en) * | 2018-07-13 | 2020-01-21 | 意法半导体有限公司 | Power conversion circuit with inrush current limiting resistor bypass |
| CN110719041B (en) * | 2018-07-13 | 2021-10-19 | 意法半导体有限公司 | Power conversion circuit with inrush current limiting resistor bypass |
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| Publication number | Publication date |
|---|---|
| CN107370354B (en) | 2019-07-02 |
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