CN1082247A - Arc extinguishing circuit for DC s ' witches - Google Patents
Arc extinguishing circuit for DC s ' witches Download PDFInfo
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- CN1082247A CN1082247A CN 93112397 CN93112397A CN1082247A CN 1082247 A CN1082247 A CN 1082247A CN 93112397 CN93112397 CN 93112397 CN 93112397 A CN93112397 A CN 93112397A CN 1082247 A CN1082247 A CN 1082247A
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- switch
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Abstract
The present invention relates to arc extinguishing circuit for DC s ' witches.The arc extinguishing network is in parallel with load, and basic principle is when switch connection, capacitor charging, and when switch cut-off, this capacitor discharge made the switch ends voltage limit below burning voltage, reached the purpose of eliminating electric arc.The used element of arc extinguishing circuit for DC s ' witches of the present invention is few, and semiconductor device does not bear overcurrent, overvoltage, the functional reliability height, and arc quenching effect is good, cut-offs the occasion of load at the double break point, only needs a cover arc-suppression circuit.
Description
The present invention relates to arc extinguishing circuit for DC s ' witches.
At present, the arc-suppression circuit of dc switch is with in switch ends and to connect the mode of arc extinguishing network maximum, Russian Patent (SU1561117 for example, SU1561116, SU1561115, SU1359810, SU1354269, SU1372400, SU1309104, SU1275570, SU1105951, SU943881, SU955249, SU792347), also can reach " electric magazine " the 1st phase in 1992 the 50th page of related content with reference to partial content in " explosion-proof electric apparatus " 1989 the 2nd phases the 2nd page to the 7th page " some technical problems of hybrid contactor " literary composition.Hybrid dc switch wherein has comparatively ideal arc quenching effect, but wherein the semiconductor switch device with switch in parallel is damaged by overcurrent, superpotential effect easily, control circuit is also more complicated generally, reliability is affected, cut off load fully and power supply is got in touch the occasion of (the double break point cut-offs) at needs, need two cover arc-suppression circuits.The another kind of mode of dc switch arc-suppression circuit is at the load two ends and connects the arc extinguishing network, present this network is in series by resistance and electric capacity or diode usually, network is simple, but there is the shortcoming that to eliminate switching arc fully, referring to carrying " electric magazine " the 1st phase in 1992 except that above institute, also have " air appliance " the 313rd page (National Defense Industry Press 1981), and " electrically contacting " the 212nd page to 218 pages (H. Hough top grade volumes, China Machine Press, 1988).
The objective of the invention is to propose the dc switch arc-suppression circuit that several circuit structures are simple, arc quenching effect is good.
The objective of the invention is this realization, at the load two ends and connect the arc extinguishing network, and go into end and connect electric capacity at direct-current switch power supply, make the initial time of switch at interrupting process, the voltage limit at its two ends reaches the purpose of eliminating electric arc below burning voltage.Principal character of the present invention is that a capacitor charges at the dc switch period of contact, and when switch cut-off, this capacitor discharge was the load afterflow.First kind of arc-suppression circuit that the present invention proposes charges to electric capacity by a resistance, and when switch cut-off, electric capacity passed through diode discharge.In second kind of arc-suppression circuit, charge to electric capacity by inductance, can shorten the charging interval of capacitor, it is excessive to avoid the switch connection transient flow to cross switching current again.In the third arc-suppression circuit, the series circuit by inductance and diode charges to electric capacity, not only can make charging process fast, can also make the charging voltage height, uses the requirement that just can reach arc extinguishing than the electric capacity of low capacity.
Advantage of the present invention is, arc-suppression circuit is simple in structure, and semiconductor element does not bear overcurrent, overvoltage, and reliable operation has good arc quenching effect, needing double break point breaking point to cut-off the occasion of load, only needs a cover arc-suppression circuit.
Below in conjunction with accompanying drawing invention is described in further detail.
In institute's drawings attached, line end (7), line end (8) are respectively the positive level and negative level end of incoming cables, the break-make between switch (1) control load (5,6) and power supply of power supply.In following statement, represent that with Ton switch (1) is by being closed to the shortest time of cut-offfing, I
0The load current that expression switch (1) cut-offs.
In the accompanying drawing 1, the network of being made up of resistance (2), electric capacity (3), diode (4) is basic crowbar circuit.Resistance (2) connect with electric capacity (3) back and load (5,6) and connecing.Diode (4) is in parallel with resistance (2), and when the closed capacitor of switch (1) (3) charged, diode (4) was for oppositely ending.The capacity C of electric capacity (3)
3With I
0Be directly proportional, need on the numerical value to satisfy: C
3(uf) 〉=I
0(A). in the bracket be dimension, as follows.For electric capacity (3) is charged to during Ton near supply voltage, the resistance R of resistance (2)
2Should satisfy: R
2(K Ω)≤0.25Ton(ms)/C
3(uf).
In the accompanying drawing 2, the network that is made of inductance (12), electric capacity (13), diode (14) is basic crowbar circuit.Inductance (12) connect with electric capacity (13) back and load (5,6) and connecing.Diode (14) is in parallel with inductance (12), and its polarity connection makes the closed electric capacity of switch (1) (13) when beginning to charge, and it is what oppositely end.The capacity C of electric capacity (13)
13Require identical with electric capacity (3) in the accompanying drawing 1.The inductance value L of inductance (12)
12Should satisfy: L
12(H)≤0.4 T
2On(ms)/C
13(uf). can also be with in parallel with diode (14) again after inductance (12) seal in resistance (15), with the charging process of control capacittance (13).
In the accompanying drawing 3, the network that is made of inductance (16), diode (17), electric capacity (18), inductance (19), switch element (20) is basic crowbar circuit.Inductance (16), diode (17), electric capacity (18) are connected afterwards and load (5,6) parallel connection successively.After switch (1) closure, diode (17) forward conduction, power supply charges to twice near supply voltage for electric capacity (18) through switch (1), inductance (16), diode (17).The one-port that on the one-port that inductance (16) and diode (17) are composed in series, also then is composed in series by inductance (19) and switch element (20).Switch element (20) is contact switch or semiconductor switch device, often opens, and cut-offs in the initial time or process of loading process its controlled closed connection once at switch (1).If supply voltage is E, the capacity C of electric capacity (18)
18Need to satisfy: C
18(uf)＞I
0(A)/E(V).The inductance value L of inductance (16)
16Should satisfy: L
16(H)≤0.1T
2On(ms)/C
18(uf). the effect of inductance (19) is to prevent from impulse current to occur in the switch element (20) its inductance value L
19Should satisfy: L
19(uH)＜C
18(uf) E
2(V)/I
2 0(A). can also seal in the discharge process that resistance (21) comes control capacittance (18) with inductance (19).In the accompanying drawing 3, for the b that prevents electric capacity (18) when discharge switch (1) brings out existing overvoltage, can and connect diode (22) at the two ends of switch (1), the b of its positive pole and switch (1) holds and joins.
The arc-suppression circuit of accompanying drawing 4 is a kind of improvement of arc-suppression circuit in the accompanying drawing 3.At this moment, electric capacity (18) has an end to be connected with power inleting terminal (8), is connected to electric capacity (23) between a end of its other end and switch (1).The access of electric capacity (23) makes the charging voltage of electric capacity (18) that reduction be arranged, but can reduce between power supply and the switch (1) apart from the influence to arc quenching effect.
When power supply and switch (1) are separated with certain distance or connecting line when long mutually, should be at accompanying drawing 1, insert electric capacity (11), I between a of switch (1) end and the power inleting terminal (8) in accompanying drawing 2 and the accompanying drawing 3
0(A) big more this capacitance requires big more.If distance is far, also should consider at electric capacity (11) two ends and connect non-linear piezo-resistance to come pressure limiting.
When load (5, when the inductance value of inductance (6) is big 6), should load (5 in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4,6) two ends and connect diode (10) or one-port that it and resistance (9) are composed in series to prevent electric capacity (3), (13) or (18) bear overvoltage, when switch (1) was closed, diode (10) was what oppositely end.
Accompanying drawing 5 is examples of using thyristor at switch element (20), and thyristor (20) gate pole is triggered by the signal that current transformer induces switch (1) shutoff.
For eliminating switch (1) electric arc that the contact spring causes in interrupting process and closing course, accompanying drawing 1 can be merged with accompanying drawing 2 or accompanying drawing 3 and use, make this moment electric capacity (13) or (18) in accompanying drawing 2 or the accompanying drawing 3 reach charging requirement at each spring period of contact of closing of contact process, its capacity is taken as smaller value, and the electric arc that its electric current that can eliminate switch (1) corresponding in the spring process is caused gets final product.And electric capacity (3) still switch (1) when cut-offfing extinguishing arc play a major role, get larger capacity.Accompanying drawing 6 is examples that basic arc-suppression circuit share in accompanying drawing 1 and the accompanying drawing 2.
Embodiments of the invention are, DC power supply voltage 150v, load is resistance 15 Ω, adopt the basic arc-suppression circuit in the accompanying drawing 1, electric capacity (3) capacity is 100uf, resistance (2) is 1K Ω. diode (4) specification is a 10A/200V. switch (1) with homemade 552 type 220V/10A AC relay, can cut-off effectively and eliminates electric arc.
Claims (9)
1, a kind of dc switch arc-suppression circuit is by resistance (2) and the two ends that are attempted by load (5,6) after electric capacity (3) is connected, it is characterized in that, also follow diode (4) with resistance (2), when the closed electric capacity of switch (1) (3) charged, diode (4) was for oppositely ending.
2, a kind of dc switch arc-suppression circuit, it is characterized in that, inductance (12) be attempted by load (5 after electric capacity (13) is connected, 6) two ends, diode (14) is also followed in the two ends of inductance (12), when the closed electric capacity of switch (1) (13) when beginning to charge, diode (14) is for oppositely ending.
3, a kind of dc switch arc-suppression circuit, it is characterized in that, by inductance (16), after diode (17), electric capacity (18) are connected successively again with load (5,6) and connect, on the one-port that inductance (16) and diode (17) are composed in series, and the one-port that then is composed in series by inductance (19) and switch element (20), when switch (1) is closed, diode (17) is a forward conduction, and switch element (20) is contact switch or semiconductor switch device, often opens, but in the interrupting process of switch (1), the closed connection once.
4, by claim 2 said dc switch arc-suppression circuits, it is characterized in that, inductance (12) with after resistance (15) is connected again with diode (14) and connect.
5,, it is characterized in that the resistance (21) of in the two-terminal network of inductance (19) and switch element (20) composition, also connecting by claim 3 said dc switch arc-suppression circuits.
By claim 3 or claim 5 said dc switch arc-suppression circuits, it is characterized in that 6, also follow diode (22) at switch (1) two ends, the b end of the positive pole of diode (22) and switch (1) joins.
7, by claim 3, or claim 5, or claim 6 said dc switch arc-suppression circuits, it is characterized in that an end of electric capacity (18) is connected with power inleting terminal (8), be connected to capacitor (23) between a end of its other end and switch (1).
8, by claim 1, or claim 2, or claim 3, or claim 4, or claim 5, or claim 6 said dc switch arc-suppression circuits, it is characterized in that, between a of switch (1) end and power inleting terminal (8), be connected to capacitor (11).
9, by claim 1, or claim 2, or claim 3, or claim 4, or claim 5, or claim 6, or claim 7, or claim 8 said dc switch arc-suppression circuits, it is characterized in that the two-terminal network of also following diode (10) or being composed in series at the two ends of load (5,6) by resistance (9) and diode (10), when switch (1) was closed, diode (10) was for oppositely ending.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93112397 CN1082247A (en) | 1993-04-08 | 1993-04-08 | Arc extinguishing circuit for DC s ' witches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93112397 CN1082247A (en) | 1993-04-08 | 1993-04-08 | Arc extinguishing circuit for DC s ' witches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1082247A true CN1082247A (en) | 1994-02-16 |
Family
ID=4990011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93112397 Pending CN1082247A (en) | 1993-04-08 | 1993-04-08 | Arc extinguishing circuit for DC s ' witches |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1082247A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958573A (en) * | 2009-07-13 | 2011-01-26 | Asco电力技术公司 | Arc extinguishing mixed transfer switch and switch transferring method |
| CN103887787A (en) * | 2014-01-29 | 2014-06-25 | 北方工业大学 | Arc extinguishing method of intrinsically safe inductive circuit |
| CN104465166A (en) * | 2013-09-12 | 2015-03-25 | 何曙光 | Direct-current soft switching-off module |
| CN104752080A (en) * | 2013-12-31 | 2015-07-01 | 北京新宇航世纪科技有限公司 | Inductive load direct current switch having arc extinction function |
| CN108962647A (en) * | 2017-07-24 | 2018-12-07 | 广州市金矢电子有限公司 | Direct current arc-control device |
| CN109003851A (en) * | 2017-07-24 | 2018-12-14 | 广州市金矢电子有限公司 | Direct current arc-suppression circuit and device |
| WO2019241924A1 (en) * | 2018-06-20 | 2019-12-26 | 何曙光 | Direct-current soft switching-off module |
| WO2020114410A1 (en) * | 2018-12-08 | 2020-06-11 | 郭桥石 | Transient voltage suppression apparatus |
| US12014893B2 (en) | 2018-09-19 | 2024-06-18 | Qiaoshi Guo | Arc-extinguishing circuit with two power supplies and apparatus |
-
1993
- 1993-04-08 CN CN 93112397 patent/CN1082247A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958573A (en) * | 2009-07-13 | 2011-01-26 | Asco电力技术公司 | Arc extinguishing mixed transfer switch and switch transferring method |
| CN104465166A (en) * | 2013-09-12 | 2015-03-25 | 何曙光 | Direct-current soft switching-off module |
| CN104752080A (en) * | 2013-12-31 | 2015-07-01 | 北京新宇航世纪科技有限公司 | Inductive load direct current switch having arc extinction function |
| CN103887787A (en) * | 2014-01-29 | 2014-06-25 | 北方工业大学 | Arc extinguishing method of intrinsically safe inductive circuit |
| CN103887787B (en) * | 2014-01-29 | 2016-08-17 | 北方工业大学 | Arc extinguishing method of intrinsically safe inductive circuit |
| CN110993403A (en) * | 2017-07-24 | 2020-04-10 | 广州市金矢电子有限公司 | Direct current arc extinguishing circuit and device |
| CN109003851A (en) * | 2017-07-24 | 2018-12-14 | 广州市金矢电子有限公司 | Direct current arc-suppression circuit and device |
| CN108962647A (en) * | 2017-07-24 | 2018-12-07 | 广州市金矢电子有限公司 | Direct current arc-control device |
| EP3644336A4 (en) * | 2017-07-24 | 2020-06-17 | Qiaoshi Guo | Direct-current arc-extinguishing device |
| AU2018308486B2 (en) * | 2017-07-24 | 2021-03-11 | Qiaoshi Guo | Direct current arc extinguishing apparatus |
| CN108962647B (en) * | 2017-07-24 | 2021-08-27 | 广州市金矢电子有限公司 | DC arc-extinguishing device |
| CN113345741A (en) * | 2017-07-24 | 2021-09-03 | 广州市金矢电子有限公司 | DC arc-extinguishing device |
| US11373817B2 (en) | 2017-07-24 | 2022-06-28 | Qiaoshi Guo | Direct current arc extinguishing circuit and apparatus |
| WO2019241924A1 (en) * | 2018-06-20 | 2019-12-26 | 何曙光 | Direct-current soft switching-off module |
| US12014893B2 (en) | 2018-09-19 | 2024-06-18 | Qiaoshi Guo | Arc-extinguishing circuit with two power supplies and apparatus |
| WO2020114410A1 (en) * | 2018-12-08 | 2020-06-11 | 郭桥石 | Transient voltage suppression apparatus |
| CN113016112A (en) * | 2018-12-08 | 2021-06-22 | 郭桥石 | Transient voltage suppression device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |