CN201327782Y - Surgeless contactor arc extinguisher - Google Patents
Surgeless contactor arc extinguisher Download PDFInfo
- Publication number
- CN201327782Y CN201327782Y CNU2008202012997U CN200820201299U CN201327782Y CN 201327782 Y CN201327782 Y CN 201327782Y CN U2008202012997 U CNU2008202012997 U CN U2008202012997U CN 200820201299 U CN200820201299 U CN 200820201299U CN 201327782 Y CN201327782 Y CN 201327782Y
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- contactor
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- lotus root
- controllable silicon
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Abstract
The utility model relates to a surgeless contactor arc extinguisher which is generally used in a contactor and a switch for switching on and switching off a capacitive load. A silicon controlled rectifier is connected in parallel with both ends of the major loop of the contactor, one route of switch-on triggering signal for the silicon controlled rectifier comes from a control loop, the other route of switch-on triggering signal for the silicon controlled rectifier comes from the contact bridge of the contactor of the major loop, and therefore the switch-on triggering signals for the silicon controlled rectifier have control loop triggering and major loop contact bridge triggering modes. Before the mechanical contacts of the contactor are closed, the control loop provides a triggering signal for the arc extinguisher, the silicon controlled rectifier is switched on when the voltage of both ends of the major loop crosses zero, and a capacitor is firstly electrified; when the contactor is switched off, the contact bridge of the contactor provides a triggering signal, the silicon controlled rectifier is triggered to switch on, serving as a current bypass, and thereby the contactor can switch on the capacitive load without surge and arc and switch off the capacitive load without arc.
Description
Technical field
The utility model does not have the surge contactor arc control device and belongs to the electric switch field, particularly a kind of be suitable for capacitive load connected in the contactor of disjunction and the switch use.
Background technology
Load much belongs to inductive load in electric power system at present, as light fixture of motor and all kinds of charged sense ballast devices etc., improve the power transformer power utilization for reaching energy-conservation minimizing circuit reactive loss, generally utilize the electric capacitor parallel connection in the line as power factor compensation, but because electric capacity is big at the moment impact electric current of connecting, the easy scaling loss adhesion of contacts of contactor, big impulse current has bigger influence to electric capacity useful life, pollutes also big to the interference that electric power system causes simultaneously.Existing market also has the special-purpose contactor that switches at electric capacity: a kind of is the auxiliary contact that can connect in advance than main contacts with one group, and its string has the capacitor switching contactor of current-limiting resistance, but this contactor is limited to connecting the surge current restraint, and want extra one group of auxiliary contact, because of it does not have electronic arc-suppressor, electric arc is big during disjunction electric capacity, uses electric life not long; Another kind is a combination switch, utilizes controllable silicon in parallel with the switch major loop, and silicon controlled trigger signal is triggered by control loop.Before connecting, mechanical contact, reduces rush of current by the controllable silicon trigger voltage passing zero trigger of control loop to parallel connection; During the switch disjunction, trigger controllable silicon once more by control loop, after mechanical contact separates, control loop turn-offs silicon controlled trigger signal after time-delay a period of time, finish no electric arc breaking course, when having the disjunction court of a feudal ruler of certain uncertain value because of the disjunction of Mechanical Contact device, for guaranteeing to reach the Arc-free purpose of reliable disjunction, need after mechanical contact separates, controllable silicon will keep one section long ON time, it is long that controllable silicon needs the operating time of conducting when having disjunction, the controllable silicon power utilization is low, it is higher to generate heat, the shortcoming of reliability decrease, accumulator also must be arranged during disjunction or add an accessory power supply in addition and give the control loop continued power, to guarantee having enough triggering energy to keep the triggering controllable silicon, reach the effect of reliable breaking arc extinguishing, also brought contactor control loop circuit complexity, response speed is slow, awkward problem.
Summary of the invention
The purpose of this utility model is to avoid weak point of the prior art and a kind of no surge contactor arc control device in the be mounted to A.C. contactor that a kind of circuit is simple, easy to use, volume is little, cost is low, reliability is high is provided.
Realize that the purpose of this utility model reaches by the following technical programs: controllable silicon is connected in parallel on contactor major loop two ends, and silicon controlled conducting triggering signal is come from controlling the loop; Another road triggering signal of silicon controlled conducting is touched bridge from the major loop contactor, and controllable silicon conducting triggering signal is triggered by control loop and major loop touches the two triggering modes of bridge triggering.In the course of work that contactor is connected, before contactor touches the bridge closure, provide triggering signal by control loop to this device earlier, controllable silicon conducting when major loop both end voltage zero passage plays the electric current bypass, and to load capacitance energising earlier, it is logical to touch bridge joint then; In the course of work of contactor disjunction, when the alternating voltage at major loop two ends during not at zero point, touch the moment of bridge disjunction at contactor, there is potential difference according to touching bridge with respect to the two ends fixed contact, touch bridge by contactor triggering signal is provided, the controllable silicon triggering and conducting plays the electric current bypass, and controllable silicon will turn-off when current over-zero voluntarily.The no surge of contactor connection does not have electric arc and disjunction does not have arcing thereby reach.
No surge contactor arc control device, when adopting unidirectional control silicon, the one-way SCR of two reverse parallel connections its two control interpolar string in parallel with the contactor major loop has light lotus root, current-limiting resistance, the input of light lotus root obtains silicon controlled trigger signal from control loop, output two ends and di-the light lotus root prop up the differential concatenation diode of sun connection altogether, and its common oedoeagus is connected to contactor and touches bridge acquisition silicon controlled trigger signal.
No surge contactor arc control device, when adopting unidirectional control silicon, the one-way SCR of two reverse parallel connections its two control interpolar string in parallel with the contactor major loop has light lotus root, current-limiting resistance, the input of light lotus root obtains silicon controlled trigger signal from control loop, output two ends and di-the light lotus root prop up differential concatenation and the positive altogether diode that connects, its common oedoeagus is connected to contactor and touches bridge acquisition silicon controlled trigger signal, a diode in parallel between the control utmost point of two one-way SCRs and the negative electrode, its control utmost point links to each other with diode cathode.
No surge contactor arc control device when adopting bidirectional triode thyristor, is connected in parallel on contactor major loop two ends by bidirectional triode thyristor.Trigger current-limiting resistance, the series connection of light lotus root, series circuit one end is connected to the silicon controlled control utmost point, and the other end links to each other with the controllable silicon second plate.The input of light lotus root obtains silicon controlled trigger signal from control loop, and the SCR control utmost point is connected to contactor by another triggering current-limiting resistance and touches bridge acquisition silicon controlled trigger signal.
Of the present utility model reasonable in design, voltage zero-cross triggers, connect no surge impact electric current, contactor does not have the connection breaking arc, the controllable silicon ON time is short, the contacts of contactor long service life, can effectively improve the reliability of power factor capacitance compensation system, reduce the operation cost of capacitance compensation system.
Description of drawings
Accompanying drawing 2 is two circuit diagrams of embodiment of the present utility model.
Accompanying drawing 3 is three-circuit schematic diagrames of embodiment of the present utility model.
Embodiment
As shown in Figure 1, the utility model is connected in parallel on SW1 two ends, contactor major loop contact by one-way SCR TR1, the TR2 of two reverse parallel connections; J1, J2 are the major loop input and output end points of contactor, and resistance R 1, light lotus root OPT1, resistance R 2 are connected in series between the two one-way SCRs control utmost point, and R1, R2 are that controllable silicon triggers current-limiting resistance; Two common sun series connection of diode D1, D2 and common oedoeagus are connected to contactor and touch bridge, negative electrode is connected respectively to light lotus root OPT1 output two ends, and diode D1, D2 are used for oppositely that the voltage by J1, J2 two ends prevents that voltage from forming the loop by the SCR control utmost point controllable silicon is misleaded.Connect in the course of work at contactor, earlier by control loop, give light lotus root OPT1 input for a signal of telecommunication, light lotus root OPT1 output is at major loop both end voltage passing zero trigger, when end points J1 is positive potential to end points J2, trigger current is controlled the utmost point by negative electrode, the control utmost point of TR2, current-limiting resistance R2, light lotus root OPT1, the current-limiting resistance R1 of controllable silicon TR2 to controllable silicon TR1, triggers controllable silicon TR1 conducting; When end points J1 is negative potential to end points J2, trigger current is controlled the utmost point by negative electrode, the control utmost point of TR1, current-limiting resistance R1, light lotus root OPT1, the current-limiting resistance R2 of controllable silicon TR1 to controllable silicon TR2, trigger controllable silicon TR2 conducting, touch the bridge closure then, close for the control signal of telecommunication of light lotus root OPT1.Play contactor electric capacity is not had the purpose that surge does not have arc starting.
In the process that contactor disconnects: as J1, J2 both end voltage during not at zero point, contactor touches the moment of bridge disjunction, touch bridge and will form potential difference two-end-point J1, J2, signal triggering controllable silicon conducting thus, electric current reaches the purpose of contactor disjunction arc extinguishing by the controllable silicon bypass.Trigger current to the controllable silicon TR1 control utmost point, triggers controllable silicon TR1 conducting by diode D1, current-limiting resistance R1 when end points J1 is positive potential to end points J2, and controllable silicon turn-offs when current over-zero voluntarily; When end points J1 was negative potential to end points J2, trigger current to the controllable silicon TR2 control utmost point, triggered controllable silicon TR2 conducting by diode D2, current-limiting resistance R2, and controllable silicon turn-offs when current over-zero voluntarily; By only controllable silicon work of need in each contactor disjunction arc extinguishing process, and maximum ON time only is half ripple.
As shown in Figure 2, the utility model embodiment two and embodiment one unique difference are that the silicon controlled control utmost point links to each other with the negative electrode of diode at the negative electrode of one-way SCR TR1, TR2 and the control utmost point respectively and met diode D3, D4.Its difference is in the contactor connection course of work, during light lotus root OPT1 conducting, when end points J1 is a positive potential to end points J2, trigger current will trigger controllable silicon TR1 conducting by diode D4 (accompanying drawing 1 is the negative electrode and the control utmost point thereof by TR2), current-limiting resistance R2, light lotus root OPT1, current-limiting resistance R1 to the controllable silicon TR1 control utmost point; When end points J1 is a negative potential to end points J2, trigger current is controlled the utmost point by diode D4 (accompanying drawing 1 is the negative electrode and the control utmost point thereof by TR1), current-limiting resistance R1, light lotus root OPT1, current-limiting resistance R2 to controllable silicon TR2, trigger controllable silicon TR2 conducting, to influence by higher reverse voltage between the silicon controlled control utmost point and the negative electrode, other course of work be with accompanying drawing 1.
As shown in Figure 3, be connected in parallel on SW1 two ends, contactor major loop contact by bidirectional triode thyristor SCR.J1, J2 are contactor input and output end points, trigger current-limiting resistance R2, light lotus root OPT1 series connection, and an end is connected to the control utmost point of controllable silicon SCR, and the other end links to each other with controllable silicon second plate A2; The SCR control utmost point is connected to contactor by another triggering current-limiting resistance R1 and touches bridge.In the course of work that contactor is connected, when touching, contactor provide a signal of telecommunication to light lotus root OPT1 input by control loop before bridge joint leads to, when light lotus root OPT1 output at major loop end points J1, J2 both end voltage passing zero trigger, when end points J1 is positive potential to end points J2, trigger current to the controllable silicon SCR control utmost point, triggers the controllable silicon SCR conducting by current-limiting resistance R2, light lotus root OPT1; When end points J1 is negative potential to end points J2, trigger current arrives the control utmost point, light lotus root OPT1, current-limiting resistance R2 by controllable silicon first anode A1, trigger the controllable silicon SCR conducting, touch the bridge combination then, close for the control signal of telecommunication of light lotus root OPT1, play contactor electric capacity is not had the purpose that surge does not have arc starting.
In the process that switch disconnects, as J1, J2 terminal voltage not when the zero point, contactor touches the moment of bridge disjunction, touch bridge and will form potential difference two-end-point J1, J2, signal triggering controllable silicon conducting thus reaches the purpose of contactor disjunction arc extinguishing, when end points J1 is positive potential to end points J2, trigger current to the controllable silicon SCR control utmost point, triggers controllable silicon TR1 conducting by current-limiting resistance R1; When end points J1 was negative potential to end points J2, trigger current to the control utmost point, current-limiting resistance R1, triggered the controllable silicon SCR conducting by controllable silicon first anode A1, turn-offed voluntarily during at current over-zero at controllable silicon; Maximum ON time is half ripple in each contactor disjunction arc extinguishing process.
In above three embodiment, light lotus root OPT1 can select the light lotus root such as the light lotus roots such as MOC3061, MOC3083 that carry the zero passage detection function for use.When carrying the zero passage detection function, also can select other model light lotus roots for use as control loop.
Claims (4)
1, a kind of no surge contactor arc control device, it is characterized in that being connected in parallel on contactor major loop two ends by controllable silicon, silicon controlled conducting triggering signal is come from controlling the loop, another road conducting triggering signal of silicon controlled is touched bridge from the major loop contactor, and controllable silicon conducting triggering signal is triggered by control loop and major loop touches the two triggering modes of bridge triggering.
2, no surge contactor arc control device according to claim 1, its feature is connected in parallel on contactor major loop J1, J2 two ends by one-way SCR TR1, the TR2 of two reverse parallel connections, resistance R 1, light lotus root OPT1, resistance R 2 are connected in series between the control utmost point of one-way SCR TR1, TR2, two common sun series connection of diode D1, D2 and common oedoeagus are connected to contactor and touch bridge SW1, the negative electrode of diode D1, D2 is connected respectively to light lotus root OPT1 output two ends, and the input of light lotus root OPT1 is connected with the output of control loop.
3, no surge contactor arc control device according to claim 1, its feature is by the one-way SCR TR1 of two reverse parallel connections, TR2 is connected in parallel on contactor major loop J1, the J2 two ends, resistance R 1, light lotus root OPT1, resistance R 2 is connected in series in one-way SCR TR1, between the control utmost point of TR2, two diode D1, common sun series connection of D2 and common oedoeagus are connected to contactor and touch bridge SW1, diode D1, the negative electrode of D2 is connected respectively to light lotus root OPT1 output two ends, the input of light lotus root OPT1 is connected with the output of control loop, diode D3, D4 respectively is connected in parallel on two one-way SCR TR1, between the control utmost point and negative electrode of TR2, the negative pole of diode extremely links to each other with one-way SCR control, and positive pole links to each other with the one-way SCR negative electrode.
4, no surge contactor arc control device according to claim 1, its feature is in parallel with contactor major loop J1, J2 two ends respectively by first and second anode A 1 of bidirectional triode thyristor SCR, A2, trigger the output series connection of current-limiting resistance R2, light lotus root OPT1, one end of series circuit is connected to the control utmost point of controllable silicon SCR, the other end links to each other with controllable silicon SCR second plate A2, the controllable silicon SCR control utmost point is connected to contactor by another triggering current-limiting resistance R1 and touches bridge SW1, and the input of light lotus root OPT1 is connected with the output of control loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202012997U CN201327782Y (en) | 2008-09-24 | 2008-09-24 | Surgeless contactor arc extinguisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202012997U CN201327782Y (en) | 2008-09-24 | 2008-09-24 | Surgeless contactor arc extinguisher |
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| Publication Number | Publication Date |
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| CN201327782Y true CN201327782Y (en) | 2009-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008202012997U Expired - Fee Related CN201327782Y (en) | 2008-09-24 | 2008-09-24 | Surgeless contactor arc extinguisher |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969006A (en) * | 2010-08-19 | 2011-02-09 | 中国电力科学研究院 | Method for improving converted current switching capability of ultra-high voltage alternating current open isolating switch |
| CN103887787A (en) * | 2014-01-29 | 2014-06-25 | 北方工业大学 | Arc extinguishing method of intrinsically safe inductive circuit |
| CN104392860A (en) * | 2014-03-07 | 2015-03-04 | 广州市金矢电子有限公司 | Capacitive coupled type arc extinguishing circuit and capacitive coupled type arc extinguishing device |
| CN104409256A (en) * | 2014-03-07 | 2015-03-11 | 广州市金矢电子有限公司 | Current feedback electronic arc-control device |
| CN106158460A (en) * | 2015-05-13 | 2016-11-23 | 广州市金矢电子有限公司 | Two end arc-control device and composite switch |
| CN108398971A (en) * | 2018-03-02 | 2018-08-14 | 常州汇邦电子有限公司 | Temperature control all-in-one machine and its working method |
| CN111641152A (en) * | 2020-05-06 | 2020-09-08 | 许继集团有限公司 | Breaker handcart with bypass and operation method |
| CN112907820A (en) * | 2021-02-02 | 2021-06-04 | 深圳市乐科智控科技有限公司 | Automatic vending machine and goods outlet switch control system and method thereof |
-
2008
- 2008-09-24 CN CNU2008202012997U patent/CN201327782Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969006A (en) * | 2010-08-19 | 2011-02-09 | 中国电力科学研究院 | Method for improving converted current switching capability of ultra-high voltage alternating current open isolating switch |
| CN101969006B (en) * | 2010-08-19 | 2013-12-18 | 中国电力科学研究院 | Method for improving converted current switching capability of ultra-high voltage alternating current open isolating switch |
| 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 |
| CN104409256B (en) * | 2014-03-07 | 2016-08-17 | 广州市金矢电子有限公司 | Current feedback electronic arc-suppressor |
| WO2015131693A1 (en) * | 2014-03-07 | 2015-09-11 | 广州市金矢电子有限公司 | Capacitive coupling-type arc-extinguishing circuit and device |
| CN104409256A (en) * | 2014-03-07 | 2015-03-11 | 广州市金矢电子有限公司 | Current feedback electronic arc-control device |
| CN104392860A (en) * | 2014-03-07 | 2015-03-04 | 广州市金矢电子有限公司 | Capacitive coupled type arc extinguishing circuit and capacitive coupled type arc extinguishing device |
| US10424443B2 (en) | 2014-03-07 | 2019-09-24 | Qiaoshi Guo | Capacitive coupling-type arc extinguishing circuit and apparatus having same |
| CN106158460A (en) * | 2015-05-13 | 2016-11-23 | 广州市金矢电子有限公司 | Two end arc-control device and composite switch |
| CN106158460B (en) * | 2015-05-13 | 2018-06-22 | 广州市金矢电子有限公司 | Two end arc-control devices and composite switch |
| CN108398971A (en) * | 2018-03-02 | 2018-08-14 | 常州汇邦电子有限公司 | Temperature control all-in-one machine and its working method |
| CN111641152A (en) * | 2020-05-06 | 2020-09-08 | 许继集团有限公司 | Breaker handcart with bypass and operation method |
| CN112907820A (en) * | 2021-02-02 | 2021-06-04 | 深圳市乐科智控科技有限公司 | Automatic vending machine and goods outlet switch control system and method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20170924 |