CN101587785A - Diode arc extinguishing alternating-current switch - Google Patents
Diode arc extinguishing alternating-current switch Download PDFInfo
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- CN101587785A CN101587785A CNA2008100115349A CN200810011534A CN101587785A CN 101587785 A CN101587785 A CN 101587785A CN A2008100115349 A CNA2008100115349 A CN A2008100115349A CN 200810011534 A CN200810011534 A CN 200810011534A CN 101587785 A CN101587785 A CN 101587785A
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Abstract
Diode arc extinguishing alternating-current switch, constitute by main switch, extinguishing arc branch road in parallel and control circuit, said extinguishing arc is propped up the route diode and auxiliary switch is in series, said control circuit comprises voltage zero-cross detecting unit, current over-zero detecting unit and timing control unit, the invention is characterized in: said timing control unit is made of microcontroller, this microcontroller begins monitoring voltage zero passage detection unit after receiving the switch connection signal, closed auxiliary switch when diode enters reverse bias, closed main switch when treating that diode enters forward bias; When receiving the switch cut-off signal, microcontroller begins monitoring current zero passage detection unit and closed immediately auxiliary switch, disjunction main switch when diode enters forward bias, disjunction auxiliary switch when treating that diode enters reverse bias.
Description
The electric arc that the present invention relates to alternating-current switch suppresses, and the switching arc that particularly utilizes property of semiconductor element to realize suppresses.International Patent classificating number H01H9/30.
The Chinese invention patent application has proposed similar alternating-current switch No. 01111050.3.Its principle is as shown in drawings: extinguishing arc branch road that is composed in series by diode and auxiliary switch in parallel on main switch, operate this two switches with a control circuit.This application requires the gap of the gap of main switch greater than auxiliary switch, and under the driving of same solenoid, auxiliary switch will be later than the main switch disjunction prior to the main switch closure.
The control circuit that this application proposes is not controlled the connection process of switch, just require in the disconnection process, to make main switch during the diode forward biasing, to finish disjunction, utilize auxiliary switch disjunction in evening to keep the shunting action of diode, guarantee that main switch does not have arc and disconnects.By the time the half cycle of diode reverse bias disjunction auxiliary switch again, the expectation auxiliary switch does not have arc yet and disconnects.
This application utilizes current transformer to catch current zero-crossing point, and opportunity of determine switch action in view of the above is to avoid the deviation on opportunity of switch motion under the out of phase situation of electric current and voltage.This disconnection for perception or capacitive load is necessary.
But this application is not controlled closing course, therefore is difficult to avoid contact to jump arc when big electric current, capacitive or inductive load.
The more important thing is that it utilizes the contact gap difference of main switch and auxiliary switch to realize the disjunction order, owing to the discreteness of mechanical structure and the unsteadiness of motion, is not easy to guarantee the time difference of two switch motions.
At last, the control circuit function that this application is formed with discrete component is simple, and control precision is low, also the make delay and the disjunction time-delay of electromagnetic switch is not compensated.
The Chinese invention patent application has proposed a kind of arc-suppressing controller that use at the A.C. contactor two ends that is attached to for No. 90100467.7.It in fact also is a kind of diode arc extinguishing alternating-current switch.This application has been used separately independently solenoid driving main switch and auxiliary switch, and connection and breaking course are all controlled.
This application attempts control circuit is improved, even has proposed to adopt the action of the major-minor switch of computer control.Its but fail concrete technical scheme of providing but, but adopt discrete logic element to constitute control circuit.This makes it still can not postpone compensation flexibly to the action of electromagnetic switch.
In addition, this application is not sampled to current over-zero, therefore is only applicable to pure resistor load yet.
In sum, diode arc extinguishing alternating-current switch of the prior art does not all have ability that the action moment of main switch and auxiliary switch is realized being accurate to the control of phase place, so its extinguishing arc effect can not get guaranteeing; Diode current flow duration wherein is not controlled, need prevent from than the diode of high current capacity to transship to burn; The more important thing is that all inconvenient action to electromagnetic switch of its control circuit postpones to compensate.
Task of the present invention is exactly the diode arc extinguishing alternating-current switch that will propose a kind of better effects if, it all is accurate to the control of phase place to connection and breaking course, the action that can compensate main and auxiliary switch postpones, and guarantees that it does not produce electric arc, and can be applicable to resistive, perception and capacitive load.
The present invention realizes above-mentioned task in order to following scheme: diode arc extinguishing alternating-current switch is made of main switch (1), extinguishing arc branch road in parallel and control circuit.Said extinguishing arc props up route diode (5) and auxiliary switch (2) is in series; Said control circuit comprises voltage zero-cross detecting unit (8), current over-zero detecting unit (7) and timing control unit.The invention is characterized in: said timing control unit is made of microcontroller (6).This microcontroller (6) begins monitoring voltage zero passage detection unit (8) after receiving the switch connection signal, enters reverse bias secondary closure auxiliary switch (2) at diode (5), treats that diode (5) enters forward bias secondary closure main switch (1); When receiving the switch cut-off signal, microcontroller (6) begins monitoring current zero passage detection unit (7) and closed immediately auxiliary switch (2), when diode (5) enters forward bias phase disjunction main switch (1), treat that diode (5) enters reverse bias phase disjunction auxiliary switch (2).
At least following effect can be arranged according to the present invention:
Owing to adopted microcontroller (single-chip microcomputer) to constitute timing control unit, can fill part and utilize the delay of the flexibility compensation electromagnetic switch motion of its control, more accurately operate main switch and auxiliary switch, make them, more effectively suppress the generation of electric arc in the best time closure or disjunction.Can also regulate the time difference of main and auxiliary switch motion easily by programming, make diode and auxiliary switch divide flow/time length to shorten as far as possible, allow to select for use the diode and the auxiliary switch of small electric current capacity, help to reduce the volume and the manufacturing cost of switch.The unique accompanying drawing of the present invention has shown the electric principle of this switch.
The unique accompanying drawing of the present invention is the electric theory diagram of said diode arc extinguishing switch.
Below in conjunction with the description of drawings embodiments of the present invention, and further set forth formation of the present invention and effect.
As shown in the figure, the formation of diode arc extinguishing alternating-current switch of the present invention is: the extinguishing arc branch road that is in series by diode (5) and auxiliary switch (2) in the two ends parallel connection of main switch (1).Two switches are driven by separately solenoid (3 and 4) respectively.Control circuit comprises voltage zero-cross detecting unit (8), current over-zero detecting unit (7) and microcontroller (6).Microcontroller has defined the output of control main switch and the output of control auxiliary switch respectively, and the two is connected to the solenoid (3) of main switch and the solenoid (4) of auxiliary switch by drive circuit (9).
Said voltage zero-crossing detection circuit (8) and current over-zero testing circuit (7) all are the somes in the known technology.The present invention only requires that it can export high or low level pulse when alternating voltage or current over-zero, allows microcontroller (6) can detect zero passage constantly.For detecting this two signals, microcontroller (6) has defined two input ports and has been attached thereto respectively and connects.
Desired electrical magnetic switch hypothesis is instantaneous finishing from powering up or cutting off the power supply to contact closure or disjunction.The professional and technical personnel knows, does not in fact have such perfect switch in the reality.Electromagnetic switch powers up or cuts off the power supply to contact closure or separately all can postpone several milliseconds to tens of millisecond from coil, is called closing time and break-time.Because the existence of closed and break-time will be guaranteed the sinusoidal ac phase place execution of contact at needs, must power up to coil in advance or cut off the power supply according to the closure of every kind of switch and break-time.This just requires controller that zero passage is done perspective monitoring constantly, i.e. zero crossing before the monitoring action phase place so that power up to solenoid in advance or cut off the power supply, comes the delay phenomenon of compensating switch action.The diode arc extinguishing switch that prior art provides does not all provide the scheme of this delay compensation.
Owing to adopted microcontroller as control unit, utilized the present invention to realize that said compensation is convenient and conspicuous.Present embodiment has adopted the simplest and direct way: a zero passage timer is set in microcontroller (6), stores closed time of delay and disjunction time of delay of main switch (1) and auxiliary switch (2) simultaneously respectively.Whenever microcontroller is received when being switched on or switched off signal, just begin to monitor the zero passage detection unit, catch estimating the zero crossing of the previous half cycle of switch motion place half cycle, start said zero passage timer, has been the duration since this zero crossing of unit timing with the millisecond.When the timer time adds that the switching delay time drops on just and powers up to solenoid when estimating switch motion place half cycle or cut off the power supply, switch motion is just finished in the moment of expectation.
Specifically its control procedure is:
In the connection process, microcontroller (6) is monitoring voltage zero passage detection unit (8) when receiving connection signal, and to begin with the millisecond be the unit timing moment that carries out the transition to positive bias during diode (5) is by reverse bias, when timing time and auxiliary switch closed time of delay of sum is sent auxiliary switch (2) close command greater than mains half-cycle less than power supply during the complete period, power up for the solenoid (4) of auxiliary switch, finish closure through just carrying in diode reverse biased to end after the delay of auxiliary switch closed action in the half cycle, realize no arc connection; When lasting timing time and main switch send main switch (1) close command closed time of delay when sum is greater than the power supply complete period and less than 1.5 power cycles, power up for the main switch solenoid, through just finishing closure in the half cycle of conducting after the delay of main switch closed action, realize no arc connection in the diode forward biasing.
In the disconnection process, microcontroller (6) is closed immediately auxiliary switch (2) when receiving breaking signal, beginning monitoring current zero passage detection unit (7), and to begin with the millisecond be the unit timing moment that carries out the transition to reverse bias during diode (5) is by positive bias, when timing time and main switch disjunction sum time of delay are sent main switch (1) disjunction instruction greater than mains half-cycle and less than power supply during the complete period, oppositely power up for the solenoid (3) of main switch or cut off the power supply, just finish disjunction in the half cycle of conducting after the disjunction delay through main switch, realize that no arc disconnects at diode (5) forward bias; When lasting timing time and auxiliary switch (2) disjunction sum time of delay are sent auxiliary switch (2) disjunction instruction during greater than the power supply complete period and less than 1.5 power cycles, oppositely power up for the solenoid (4) of auxiliary switch or cut off the power supply, finish disjunction through just carrying after the disjunction delay of auxiliary switch in the half cycle that ends, realize that no arc disconnects in diode reverse biased.
So accurate control guarantees that more reliably main switch and auxiliary switch no arc switching, extinguishing arc effect are filled a part assurance.
The present invention also has further effect.Utilize aforesaid Time Precise Controlling, can reduce the time difference of main and auxiliary switch motion as much as possible, make it the extinguishing arc effect that promptly keeps good, arranged the shortest diode conduction time again.This will allow to select for use the diode and the auxiliary switch of small electric current capacity, helps to reduce volume of switch and reduces manufacturing cost.
Concrete way is: in connection process main switch closing moment as far as possible in advance; Then postpone the main switch disjunction constantly in the disconnection process as far as possible.By changing timer time, the professional is not difficult to realize above-mentioned effect.
The present invention also has an effect to be, the switching of electromagnetic switch postpones all certain discreteness to be arranged in the reality.The feature of storage closing time and break-time can remedy the action that parameter discrete brings effectively and changes constantly in the switch of the present invention.This be the switch that provides of prior art can not accomplish.
When the action of selected electromagnetic switch postponed less than the half period or the complete period of being longer than, switch of the present invention can also adapt to this faster or slower switch by reducing or increase lead.Specifically be exactly:
When switch motion postponed less than the half period, microcontroller changed the zero crossing that action place half cycle is estimated in monitoring into.When switch motion postponed greater than the complete period, microcontroller was monitored the more zero crossing of front.
Claims (4)
1, diode arc extinguishing alternating-current switch, by main switch (1), extinguishing arc branch road in parallel and control circuit constitute, said extinguishing arc props up route diode (5) and auxiliary switch (2) is in series, said control circuit comprises voltage zero-cross detecting unit (8), current over-zero detecting unit (7) and timing control unit, the invention is characterized in: said timing control unit is made of microcontroller (6), this microcontroller (6) begins monitoring voltage zero passage detection unit (8) after receiving the switch connection signal, at diode (5) closed auxiliary switch (2) when entering reverse bias, treat diode (5) closed main switch (1) when entering forward bias; When receiving the switch cut-off signal, microcontroller (6) begins monitoring current zero passage detection unit (7) and closed immediately auxiliary switch (2), when diode (5) disjunction main switch (1) when entering forward bias, treat diode (5) disjunction auxiliary switch (2) when entering reverse bias.
2, diode arc extinguishing alternating-current switch as claimed in claim 1, it is characterized in that: said microcontroller (6) is provided with the zero passage timer, it with the millisecond perdurabgility since the unit timing zero passage, this controller is also stored closed time of delay and disjunction time of delay of main switch (1) and auxiliary switch (2) respectively, and this timer time cooperates the action of compensating switch (1 and 2) to postpone with time of delay.
3, diode arc extinguishing switch as claimed in claim 2, it is characterized in that: said microcontroller (6) is monitoring voltage zero passage detection unit (8) when receiving connection signal, and to begin with the millisecond be the unit timing moment that carries out the transition to positive bias during diode (5) is by reverse bias, when timing time and auxiliary switch closed time of delay of sum is sent auxiliary switch (2) close command greater than mains half-cycle less than power supply during the complete period, close closure and instruct when lasting timing time and main switch send main open (1) closed time of delay when sum is greater than the power supply complete period and less than 1.5 power cycles.
4, diode arc extinguishing switch as claimed in claim 2, it is characterized in that: said microcontroller (6) is closed immediately auxiliary switch (2) when receiving breaking signal, beginning monitoring current zero passage detection unit (7), and to begin with the millisecond be the unit timing moment that carries out the transition to reverse bias during diode is by positive bias, when timing time and main switch disjunction sum time of delay are sent main switch (1) disjunction instruction greater than mains half-cycle and less than power supply during the complete period, send auxiliary switch (2) disjunction when lasting timing time and auxiliary switch (2) disjunction sum time of delay during greater than the power supply complete period and less than 1.5 power cycles and instruct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100115349A CN101587785A (en) | 2008-05-23 | 2008-05-23 | Diode arc extinguishing alternating-current switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100115349A CN101587785A (en) | 2008-05-23 | 2008-05-23 | Diode arc extinguishing alternating-current switch |
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| CN101587785A true CN101587785A (en) | 2009-11-25 |
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| CNA2008100115349A Pending CN101587785A (en) | 2008-05-23 | 2008-05-23 | Diode arc extinguishing alternating-current switch |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510081A (en) * | 2011-09-30 | 2012-06-20 | 深圳市英威腾电气股份有限公司 | Zero-cross control circuit, method and system of photovoltaic network disconnection relay |
| CN102623220A (en) * | 2011-02-01 | 2012-08-01 | 王海 | High-voltage electronic arc extinguishing switch |
| CN106653433A (en) * | 2017-02-08 | 2017-05-10 | 王海 | High-voltage large-current zero-equivalent phase switch, and control method thereof |
| CN109343398A (en) * | 2018-10-19 | 2019-02-15 | 林建明 | A kind of voltage over zero high-voltage arc inhibition system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3429469A1 (en) * | 1984-08-10 | 1986-02-13 | Telefunken electronic GmbH, 7100 Heilbronn | Spark extinguishing circuit on a switching contact |
| JPS61153905A (en) * | 1984-12-14 | 1986-07-12 | ゼネラル・エレクトリツク・カンパニイ | Arc extinguisher |
| CN1053707A (en) * | 1990-01-25 | 1991-08-07 | 牛忠 | Arc-suppressing controller for ac contactor |
| CN1377051A (en) * | 2001-03-24 | 2002-10-30 | 王振民 | AC power switch without breaking arc |
| CN101159193A (en) * | 2007-09-28 | 2008-04-09 | 珠海格力电器股份有限公司 | Control method and system for prolonging electric service life of one-phase relay and alternating current contactor |
-
2008
- 2008-05-23 CN CNA2008100115349A patent/CN101587785A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3429469A1 (en) * | 1984-08-10 | 1986-02-13 | Telefunken electronic GmbH, 7100 Heilbronn | Spark extinguishing circuit on a switching contact |
| JPS61153905A (en) * | 1984-12-14 | 1986-07-12 | ゼネラル・エレクトリツク・カンパニイ | Arc extinguisher |
| CN1053707A (en) * | 1990-01-25 | 1991-08-07 | 牛忠 | Arc-suppressing controller for ac contactor |
| CN1377051A (en) * | 2001-03-24 | 2002-10-30 | 王振民 | AC power switch without breaking arc |
| CN101159193A (en) * | 2007-09-28 | 2008-04-09 | 珠海格力电器股份有限公司 | Control method and system for prolonging electric service life of one-phase relay and alternating current contactor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623220A (en) * | 2011-02-01 | 2012-08-01 | 王海 | High-voltage electronic arc extinguishing switch |
| CN102510081A (en) * | 2011-09-30 | 2012-06-20 | 深圳市英威腾电气股份有限公司 | Zero-cross control circuit, method and system of photovoltaic network disconnection relay |
| CN106653433A (en) * | 2017-02-08 | 2017-05-10 | 王海 | High-voltage large-current zero-equivalent phase switch, and control method thereof |
| US11211215B2 (en) | 2017-02-08 | 2021-12-28 | Gyrk International Technology Co., Ltd. | Switch, and control method thereof |
| CN109343398A (en) * | 2018-10-19 | 2019-02-15 | 林建明 | A kind of voltage over zero high-voltage arc inhibition system |
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Owner name: XU GUOXIANG Free format text: FORMER OWNER: SHENYANG CITY RUIBAO ELECTRONIC CO., LTD. Effective date: 20110414 Owner name: XU FAN |
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Free format text: CORRECT: ADDRESS; FROM: 110179 ROOM B102, NO. 7, XINLONG STREET, HUNNAN NEW DISTRICT, SHENYANG CITY, LIAONING PROVINCE TO: 110003 632, NO. 121, XI AN STREET, HEPING DISTRICT, SHENYANG CITY |
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Effective date of registration: 20110414 Address after: 110003 121 Xi'an street, Heping District, Shenyang 632 Applicant after: Xu Guoxiang Co-applicant after: Xu Fan Address before: 110179 Liaoning city of Shenyang province Shenyang Hunnan New Long Street No. 7 room B102 Applicant before: Shenyang Ruibao Electronics Co., Ltd. |
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Application publication date: 20091125 |