CN103560476A - Anti-interference electricity module in bypass mode and control method of anti-interference electricity module - Google Patents
Anti-interference electricity module in bypass mode and control method of anti-interference electricity module Download PDFInfo
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Abstract
The invention relates to an anti-interference electricity module in a bypass mode and a control method of the anti-interference electricity module. The anti-interference electricity module comprises a single-chip microcomputer, an electromagnetic relay, a solid-state relay, an energy storage capacitor set, an AC/DC switching power supply, a DC/DC power supply, a voltage conversion chip, an alternating voltage sampler and a state detector, wherein two ends of the alternating voltage sampler and two ends of the state detector are respectively in signal connection with a grid and the single-chip microcomputer. The input end and the output end of the AC/DC switching power supply are respectively and electrically connected with the grid and the energy storage capacitor set, and the output end of the energy storage capacitor set is electrically connected with the single-chip microcomputer and a contactor respectively through the voltage conversion chip and the DC/DC power supply. A normally closed contact of the electromagnetic relay is arranged on the grid, and a normally open contact of the electromagnetic relay and a normally open contact of the solid-state relay are connected in series on a direct current power supply loop. The anti-interference electricity module can supply alternating current and direct current to the contactor respectively in the normal running process and the electricity interference process, the defects of starting of pulsating direct current are overcome, and pull-in of the contactor is maintained, so the reliability is high and operational requirements of a continuous production line can be met.
Description
Technical field
The invention belongs to the anti-shake electro-technical field of electric power system, particularly a kind of being applied in the 380V of industrial enterprise and 220V secondary network system, for preventing anti-shake electric module and the control method thereof of the employing bypass mode that the improper dropout of contactor proposes.
Background technology
Electric power system is in running, due to reasons such as outside, the inner electric network fault of thunderbolt, shorted to earth, fault reclosing, prepared auto restart, enterprise, main equipment startings, the electric network fault causing, can cause voltage instantaneous to fluctuate by a relatively large margin or short supply interruption recovers again, this phenomenon is called " shake electricity ".
The electricity that shakes mainly contains following several situation:
(1) voltage collapse, rise sharply, 0.5 cycle of duration is to 1min, voltage rise to nominal voltage 110～180% or drop to 10～90% of nominal voltage.
(2) voltage flicker, voltage waveform envelope is regular variation or a series of change at random of voltage magnitude, generally shows as human eye and the visual experience that produce abnormal to the caused illumination of voltage fluctuation.
(3) short supply interruption, the duration is the power failure (as prepared auto restart, reclosing etc.) to 3S at 0.5 cycle.
Shake electric impact:
(1) impact of rolling electricity on current supply circuit control apparatus
The application of contactor in low-tension motor control system is very extensive, has accounted for sizable ratio.Operation principle feature due to electromagnetic treadle; when there is shaking electricity in electrical network; can cause contactor actuating coil short supply interruption or brownout, the dynamic and static iron core suction that causes maintaining adhesive by electric current is less than the elastic force of retracting spring, makes contactor discharge the major reason that produces tripping grinder.The operating characteristics of electromagnetic treadle: 80% of international IEC standard code, rated voltage is critical reliable pick-up voltage.Critical release voltage is 20～70% of rated operational voltage, and in on-the-spot use, electromagnetic treadle is general all discharges at the voltage 50% of nominal, so be due to principle because " shaking electric " causes the uncontrolled and natural tripping grinder of electromagnetic treadle.
(2) " shake electric " and cause tripping grinder reason
Along with the continuous expansion of development, capacity and the scale of electrical network, the frequency that the electrical phenomena that shakes occurs is more and more, because the scale of modernization industrial and mineral enterprise process units is increasing, although it is shorter to shake the electricity duration, very huge on the impact of producing.The voltage fluctuation of moment will cause hundreds of motor tripping operations, equipment downtime, and line voltage recovers rear motor and can not resume operation voluntarily, cause continuous flow procedure disorderly, and likely cause and produce and equipment breakdown.For large-scale plant, if manually recovered, the time of cost is long, and for some unattended field arrangements, the time of recovery is just longer.This is for continuous production devices such as oil, chemical industry, agricultural chemicals, generation such as safety, environmental protection, waste product, wastage of material, yield reducation, the low inferior a series of losses of benefit, be very huge.
(3) impact of rolling electricity on current supply circuit motor
Shake electricity due to low-voltage, can cause excessive current flow in motor, thereby make motor heating protection action tripping operation." shake electric " the short several seconds; to requiring large number quipments not allow the enterprise of motor tripping grinder in continuous production in technological process, be catastrophic; the lighter's hundreds of thousands, up to ten million economic loss; serious also can breaking out of fire, blast and even personal safety ，Dui enterprise be really several seconds of disaster.
For this reason, anti-shake electric module emerges and is used in consecutive production production line, all keeps in touch device and do not thread off in the time of making electric power system, because of thunderbolt, short circuit coincidence etc., instantaneous loss of pressure, dead electricity (being commonly called as rolling electricity) occur; It operates connection, disjunction is identical with conventional contactor.When accident interruption surpasses anti-shake electric module specified time during the time, contactor dropout, has reached and has escaped the electric non-stop-machine object of production continuously that keeps of rolling.Anti-shake electric module has been brought into play positive role to guaranteeing in enterprises such as oil, chemical industry, iron and steel, can effectively resist supply voltage shakiness, instantaneous loss of pressure, instant cut-off, has met the continuous production line of high request.
At present, existing anti-shake electric module is line model, and power supply is powered for a long time to contactor, if there is power failure and control section fault, i.e. the anti-shake Electricity Functional of time delay lost efficacy and damaged, and had affected continuous production line normal operation, was embodied in:
1, Starting mode: pulsating direct current starting contactor, easily burns out contactor coil and device device; During pulsating direct current starting contactor, when using large volume contactor, contactor internal resistance very little (2～10 Europe); (1) easily burn out contactor: because contactor internal resistance is little, in the constant situation of pulsating dc voltage, by contactor coil electric current very large (tens amperes), thereby cause contactor coil easily to damage; (2) easily burn device device: because device itself is by controlling electromagnetic relay, higher pulsating direct current being switched to the direct voltage that Switching Power Supply provides, so large electric current is to flow through from this device electromagnetic relay; In this case, device control loop part of devices easily burns out.
2, control section principle: control section easily burns out electromagnetic relay contact, and burn out device internal circuit board, thus device useful life reduced; (1) what because of device, use is electromagnetic relay, most electromagnetic relays contact break-make D.C. capacity is not high, when flowing through electromagnetic relay contact, direct current is greater than electromagnetic relay rated value, electromagnetic relay contact there will be " arcing " when discharging, therefore usually there is electromagnetic relay burning of contact, sometimes may cause electromagnetic relay ignition, seriously can cause the generation of fire; (2) if electromagnetic relay burns out because of " arcing ", there are two kinds of possibilities in electromagnetic relay contact, the first possibility is: extremely in the same side (Chang Kai or normally closed) all glued in start to exchange fire line and zero line electromagnetic relay contact, the second possibility is: the line electromagnetic relay contact of starting to exchange fire " sticky dead " often opening side connecting to neutral line electromagnetic relay contact " sticky dead " in normally closed side, or the line electromagnetic relay contact of starting to exchange fire " sticky dead " is in normally closed side and connecting to neutral line electromagnetic relay contact " sticky dead " opens side often; When there is the first situation, just affect device and can not control switching action, cause the disabler of the anti-shake electricity of device; When there is the second situation, together with direct current that alternating current provides with Switching Power Supply is short, therefore cause the situations such as wiring board burning, device burn out, current supply circuit trip protection.
Summary of the invention
For solving the above-mentioned problems in the prior art, the invention provides and a kind ofly dock respectively tentaculum can and occur to shake electricity when normal operation time and supply with alternating current and direct current, the power supply of realizing contactor is uninterrupted, solved the defect that pulsating direct current starting contactor exists, and maintain contactor adhesive, reliability is high, meets anti-shake electric module and the control method thereof of the employing bypass mode of continuous production line job requirements steady in a long-term completely.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
An anti-shake electric module for bypass mode, includes single-chip microcomputer, electromagnetic relay, solid-state relay, energy capacitance set, AC/DC Switching Power Supply, DC/DC power supply, voltage transitions chip, alternating voltage sampler and state detector; Wherein, the input of described AC/DC Switching Power Supply and output are electrically connected to the input of electrical network and energy capacitance set respectively, the one output of described energy capacitance set is electrically connected to single-chip microcomputer through voltage transitions chip, and another output is electrically connected to the input of DC/DC power supply; The output of described DC/DC power supply is electrically connected to the contactor being arranged on electrical network by direct current power supply loop; The input of described alternating voltage sampler and state detector is connected with single-chip microcomputer signal with electrical network respectively with output; The output of described single-chip microcomputer is connected with solid-state relay signal with electromagnetic relay, and normally closed contact J1A, the J1D of described electromagnetic relay are located on electrical network to connect electrical network and contactor, and the normal opened contact J2 of its normal opened contact J1B, J1C and solid-state relay is connected on direct current power supply loop in the lump.
Further, normally closed contact J1A, the J1D of described electromagnetic relay are located at respectively on the N line and L line of electrical network; Described direct current power supply loop is connected to and is positioned on the normally closed contact J1A of electromagnetic relay, the N line at J1D rear and L line, and the normal opened contact J1B of described electromagnetic relay and the normal opened contact J2 of solid-state relay are connected on the direct current power supply loop being connected with the N line of electrical network, the normal opened contact J1C of described electromagnetic relay is connected on the direct current power supply loop being connected with the L line of electrical network; The input of described alternating voltage sampler is connected on the normally closed contact J1A of electromagnetic relay, the N line in J1D the place ahead and L line, the input of described state detector is connected on L line, and is positioned at the rear of the direct current power supply loop of the normal opened contact J1C that is in series with electromagnetic relay.
Further, described alternating voltage sampler is instrument transformer; Described state detector is mainly comprised of two groups of diodes, a direct current optocoupler and an AC/DC optocoupler, wherein, described two groups of diodes are anti-and connect, and every group of diode be in series by two diodes, and described direct current optocoupler and AC/DC optocoupler are connected in parallel on two groups of diodes.
Further, described voltage transitions chip is LDO power supply chip, and described energy capacitance set is in series by the super capacitor of 7 10F/2.5V.
Further, described anti-shake electric module also includes voltage monitor, mainly a Zener diode and direct current optocoupler, consists of, and its two ends are connected with single-chip microcomputer signal with DC/DC power supply respectively.
Further, be also in series with fuse on described direct current power supply loop, the input of described AC/DC Switching Power Supply is provided with EMC power-supply filter.
A control method for the anti-shake electric module of bypass mode is supplied with alternating current starting contactor by electrical network when normal operation, makes contactor adhesive, does not thread off; When occurring to shake electricity, by bypass, supplying with direct current maintains contactor adhesive, does not thread off.
Further, the control method of the anti-shake electric module of described bypass mode, specifically includes following steps:
A. after start-energising, operation start button;
B. Alternating Current Power Supply-electrical network is supplied with alternating current through normally closed contact J1A, the J1D of electromagnetic relay to contactor;
C. status monitoring-state detector detects, judges the state of contactor and the mode that maintains attracting state in real time;
D. shake pyroelectric monitor-alternating voltage sampler Real-time Collection electrical network input voltage value, and judge whether input voltage meets and shake electric criterion requirement;
E. bypass direct current supply-when meeting the electric condition of rolling, normally closed contact J1A, the J1D of Single-chip Controlling electromagnetic relay open, normal opened contact J1B, the J1C of electromagnetic relay and the normal opened contact J2 of solid-state relay are closed, last energy capacitance set is supplied with direct current through DC/DC power supply, direct current power supply loop to contactor successively, and time delay certain hour, to maintain contactor adhesive, not thread off;
F. switchback Alternating Current Power Supply-when time delay finishes, normal opened contact J1B, the J1C of Single-chip Controlling electromagnetic relay and the normal opened contact J2 of solid-state relay open, normally closed contact J1A, the J1D of electromagnetic relay are closed, stop energy capacitance set and supply with direct current to contactor, switchback electrical network is supplied with alternating current to contactor.
Further, front with execution described " rolling pyroelectric monitor " after carrying out described " status monitoring ", also carry out fault self-checking, if there is fault, time delay " dropout " function exits automatically, and maintains contactor adhesive with alternating current, and carries out faulty indication.
The invention has the beneficial effects as follows:
The present invention, by technique scheme, can supply with alternating current starting contactor by electrical network, there will not be situations such as burning out device and contactor, has solved the defect that pulsating direct current starting contactor exists; And by energy capacitance set and DC/DC power supply, realize the direct current supply of contactor while shaking electricity, and maintaining contactor adhesive, cost is low, volume is little, reliability is high; In addition, this anti-shake electric module has also been utilized equal characteristics faster than electromagnetic relay of the action of solid-state relay and release time, solved electromagnetic relay when discharging, electromagnetic relay contact there will be " arcing ", usually occurs the situations such as electromagnetic relay burning of contact; With respect to the principle of traditional anti-shake electric module, more reliable, met the requirement of continuous production line operation steady in a long-term.
Accompanying drawing explanation
Fig. 1 is a kind of structural principle schematic block diagram that adopts the anti-shake electric module embodiment of bypass mode of the present invention;
Fig. 2 is the flow chart of the control method of a kind of anti-shake electric module that adopts bypass mode of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in fig. 1:
A kind of anti-shake electric module that adopts bypass mode described in the embodiment of the present invention, be the anti-shake electric module of off-line mode, include single-chip microcomputer 1, electromagnetic relay 2, solid-state relay 3, energy capacitance set 4, AC/DC Switching Power Supply 5, DC/DC power supply 6, voltage transitions chip 7, alternating voltage sampler 8 and state detector 9.Wherein, the input of described AC/DC Switching Power Supply 5 and output are electrically connected to the input of electrical network 10 and energy capacitance set 4 respectively, the one output of described energy capacitance set 4 is electrically connected to single-chip microcomputer 1 through voltage transitions chip 7, and another output is electrically connected to the input of DC/DC power supply 6; The output of described DC/DC power supply 6 is electrically connected to the contactor 12 being arranged on electrical network 10 by direct current power supply loop 11; The input of described alternating voltage sampler 8 and state detector 9 is connected with single-chip microcomputer 1 signal with electrical network 10 respectively with output; The output of described single-chip microcomputer 1 is connected with solid-state relay 3 signals with electromagnetic relay 2, and normally closed contact J1A, the J1D of electromagnetic relay 2 are located on electrical network 10 to connect electrical network 10 and contactor 12, and the normal opened contact J2 of its normal opened contact J1B, J1C and solid-state relay 3 is connected on direct current power supply loop 11 in the lump.Concrete structure can be: normally closed contact J1A, the J1D of described electromagnetic relay 2 is located at respectively on the N line and L line of electrical network 10; Described direct current power supply loop 11 is connected to and is positioned on the normally closed contact J1A of electromagnetic relay 2, the N line at J1D rear and L line, and the normal opened contact J1B of electromagnetic relay 2 is connected on the direct current power supply loop 11 being connected with the N line of electrical network 10 with the normal opened contact J2 of solid-state relay 3, and the normal opened contact J1C of described electromagnetic relay 2 is connected on the direct current power supply loop 11 being connected with the L line of electrical network 10; The input of described alternating voltage sampler 8 is connected on the normally closed contact J1A of electromagnetic relay 2, the N line in J1D the place ahead and L line, the input of described state detector 9 is connected on L line, and is positioned at the rear of the direct current power supply loop 11 of the normal opened contact J1C that is in series with electromagnetic relay 2.
Wherein, described alternating voltage sampler 8 is instrument transformer; Described state detector 9 is mainly comprised of two groups of diodes, a direct current optocoupler and an AC/DC optocoupler, described two groups of diodes are anti-also to be connected, and every group of diode is in series by two diodes, described direct current optocoupler and AC/DC optocoupler are connected in parallel on two groups of diodes; Described voltage transitions chip is LDO power supply chip; Described energy capacitance set 4 is in series by the super capacitor of 7 10F/2.5V.
The operation principle of the anti-shake electric module of employing bypass mode of the present invention is: after powering on, press start button, electrical network 10 is supplied with the 12 reliable adhesives of alternating current starting contactor, alternating voltage sampler 8 Real-time Collection line voltage values now, and flow to single-chip microcomputer 1 and judge whether to occur to shake electric; When occurring to shake electricity, normally closed contact J1A, J1D that single-chip microcomputer 1 is controlled electromagnetic relay 2 open, normal opened contact J1B, the J1C of electromagnetic relay 2 and the normal opened contact J2 of solid-state relay 3 are closed, make 4 pairs of contactors of energy capacitance set 12 supply with direct current, to maintain contactor 12 adhesives, not thread off; After time delay finishes, normally closed contact J1A, J1D that single-chip microcomputer 1 is controlled electromagnetic relay 2 are closed, open the normal opened contact J1B of electromagnetic relay 2 and the normal opened contact J2 of solid-state relay 3 simultaneously, and switchback is supplied with alternating current by electrical network 10 to contactor 12.State detector 9 also detects the current information on L line in real time simultaneously, and flows to the state of single-chip microcomputer 1 judgement contactor 12 and the mode that maintains attracting state.
Like this, the anti-shake electric module of employing bypass mode of the present invention adopts alternating current starting contactor 12, there will not be situations such as burning out device and contactor, has solved the defect that pulsating direct current starting contactor exists; And while shaking electricity by the control of electromagnetic relay 2 and solid-state relay 3 being realized to the direct current supply of 4 pairs of contactors 12 of energy capacitance set, maintain contactor 12 adhesives, and after rolling electricity, automatically recovering 10 pairs of contactor 12 Alternating Current Power Supplies of electrical network, cost is low, volume is little, reliability is high; And this anti-shake electric module is only just worked when occurring shaking electricity, even if damage minute closing operation (now remaining on electrical network Alternating Current Power Supply state) that does not also affect normal contactor 12, can be because not used this anti-shake electric module to bring new additional faults point; In addition, this anti-shake electric module has also been utilized equal characteristics faster than electromagnetic relay 2 of the action of solid-state relay 3 and release time, solved electromagnetic relay when discharging, electromagnetic relay contact there will be " arcing ", usually occurs the situations such as electromagnetic relay burning of contact; With respect to the principle of traditional anti-shake electric module, more reliable, met the requirement of continuous production line operation steady in a long-term.
As a preferred version of the anti-shake electric module of the present invention, described anti-shake electric module also includes voltage monitor 13, mainly a Zener diode and direct current optocoupler, consists of, and its two ends are connected with single-chip microcomputer 1 signal with DC/DC power supply 6 respectively.During operation, voltage monitor 13 detects the power supply of DC/DC power supply 6 in real time, and power supply is detected to transfer of data to single-chip microcomputer 1, then single-chip microcomputer 1 detects this anti-shake electric module of data judgement according to this power supply and self whether has fault, if there is fault, anti-shake Electricity Functional exits automatically, with alternating current, maintains contactor 12 adhesives, do not affect normal contactor divide-shut brake, more reliable performance.
In addition, on described direct current power supply loop 11, be also in series with fuse (not showing in figure), the input of described AC/DC Switching Power Supply 5 is provided with EMC power-supply filter (not showing in figure), effectively improves fail safe and the antijamming capability of this anti-shake electric module, and performance is more stable.
As shown in Figure 2:
A kind of control method that adopts the anti-shake electric module of bypass mode described in the embodiment of the present invention is supplied with alternating current starting contactor 12 by electrical network 10 when normal operation, makes contactor 12 adhesives, does not thread off; When occurring to shake electricity, by bypass, supplying with direct current maintains contactor 12 adhesives, does not thread off.Specifically include following steps:
Steps A. after start-energising, operation start button;
Step B. Alternating Current Power Supply-electrical network 10 is supplied with alternating current through normally closed contact J1A, the J1D of electromagnetic relay 2 to contactor 12;
Step C. status monitoring-state detector 9 detects, judges the state of contactor 12 and the mode that maintains attracting state in real time;
Step D. rolling pyroelectric monitor-alternating voltage sampler 8 Real-time Collection electrical network input voltage values, and judge whether input voltage meets the electric criterion requirement of rolling;
Step e. bypass direct current supply-when meeting the electric condition of rolling, normally closed contact J1A, J1D that single-chip microcomputer 1 is controlled electromagnetic relay 2 open, normal opened contact J1B, the J1C of electromagnetic relay 2 and the normal opened contact J2 of solid-state relay 3 are closed, last energy capacitance set 4 is supplied with direct currents through DC/DC power supply 6, direct current power supply loop 11 to contactor 12 successively, and time delay certain hour (this delay time user can set voluntarily.), to maintain contactor 12 adhesives, not thread off;
Step F. switchback Alternating Current Power Supply-when time delay finishes, single-chip microcomputer 1 controls normal opened contact J1B, the J1C of electromagnetic relay 2 and the normal opened contact J2 of solid-state relay 3 opens, normally closed contact J1A, the J1D of electromagnetic relay 2 are closed, stop energy capacitance set 4 and supply with direct current to contactor 12, switchback electrical network 10 is supplied with alternating current to contactor 12.
Like this, in the time of can and occurring to shake electricity when normal operation, dock respectively tentaculum 12 and supply with alternating current and direct current, the power supply of realizing contactor is uninterrupted, solved the defect that pulsating direct current starting contactor exists, and maintain contactor 12 adhesives, reliability is high, meets the requirement of continuous production line operation steady in a long-term completely.
A preferred version as control method of the present invention, front with execution described " rolling pyroelectric monitor " after carrying out described " status monitoring ", also carry out fault self-checking, if there is fault, time delay " dropout " function exits automatically, and maintains contactor 12 adhesives with alternating current, and carries out faulty indication, can not increase any fault point, more can meet the needs of continuous production line operation steady in a long-term.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (9)
1. an anti-shake electric module that adopts bypass mode, it is characterized in that, include single-chip microcomputer (1), electromagnetic relay (2), solid-state relay (3), energy capacitance set (4), AC/DC Switching Power Supply (5), DC/DC power supply (6), voltage transitions chip (7), alternating voltage sampler (8) and state detector (9); Wherein, the input of described AC/DC Switching Power Supply (5) and output are electrically connected to the input of electrical network (10) and energy capacitance set (4) respectively, the one output of described energy capacitance set (4) is electrically connected to single-chip microcomputer (1) through voltage transitions chip (7), and another output is electrically connected to the input of DC/DC power supply (6); The output of described DC/DC power supply (6) is electrically connected to the contactor (12) being arranged on electrical network (10) by direct current power supply loop (11); The input of described alternating voltage sampler (8) and state detector (9) is connected with single-chip microcomputer (1) signal with electrical network (10) respectively with output; The output of described single-chip microcomputer (1) is connected with solid-state relay (3) signal with electromagnetic relay (2), and it is upper to connect electrical network (10) and contactor (12) that normally closed contact J1A, the J1D of described electromagnetic relay (2) are located at electrical network (10), and the normal opened contact J2 of its normal opened contact J1B, J1C and solid-state relay (3) is connected on direct current power supply loop (11) in the lump.
2. the anti-shake electric module of employing bypass mode according to claim 1, is characterized in that, normally closed contact J1A, the J1D of described electromagnetic relay (2) is located at respectively on the N line and L line of electrical network (10); Described direct current power supply loop (11) is connected to and is positioned on the normally closed contact J1A of electromagnetic relay (2), the N line at J1D rear and L line, and it is upper that the normal opened contact J2 of the normal opened contact J1B of described electromagnetic relay (2) and solid-state relay (3) is connected on the direct current power supply loop (11) being connected with the N line of electrical network (10), and the normal opened contact J1C of described electromagnetic relay (2) is connected on the direct current power supply loop (11) being connected with the L line of electrical network (10); The input of described alternating voltage sampler (8) is connected on the normally closed contact J1A of electromagnetic relay (2), the N line in J1D the place ahead and L line, the input of described state detector (9) is connected on L line, and is positioned at the rear of the direct current power supply loop (11) of the normal opened contact J1C that is in series with electromagnetic relay (2).
3. the anti-shake electric module of employing bypass mode according to claim 1 and 2, is characterized in that, described alternating voltage sampler (8) is instrument transformer; Described state detector (9) is mainly comprised of two groups of diodes, a direct current optocoupler and an AC/DC optocoupler, wherein, described two groups of diodes are anti-also to be connected, and every group of diode is in series by two diodes, and described direct current optocoupler and AC/DC optocoupler are connected in parallel on two groups of diodes.
4. the anti-shake electric module of employing bypass mode according to claim 3, is characterized in that, described voltage transitions chip (7) is LDO power supply chip, and described energy capacitance set (4) is in series by the super capacitor of 7 10F/2.5V.
5. according to the anti-shake electric module of the employing bypass mode described in claim 1 or 2 or 4, it is characterized in that, described anti-shake electric module also includes voltage monitor (13), mainly a Zener diode and direct current optocoupler, consist of, its two ends are connected with single-chip microcomputer (1) signal with DC/DC power supply (6) respectively.
6. according to the anti-shake electric module of the employing bypass mode described in claim 1 or 2 or 4, it is characterized in that, described direct current power supply loop is also in series with fuse on (11), and the input of described AC/DC Switching Power Supply (5) is provided with EMC power-supply filter.
7. a control method that adopts the anti-shake electric module of bypass mode, is characterized in that, when normal operation, by electrical network (10), supplies with alternating current starting contactor (12), makes contactor (12) adhesive, does not thread off; When occurring to shake electricity, by bypass, supplying with direct current maintains contactor (12) adhesive, does not thread off.
8. control method according to claim 7, is characterized in that, specifically includes following steps:
A. after start-energising, operation start button;
B. Alternating Current Power Supply-electrical network (10) is supplied with alternating current through normally closed contact J1A, the J1D of electromagnetic relay (2) to contactor (12);
C. status monitoring-state detector (9) detects, judges the state of contactor (12) and the mode that maintains attracting state in real time;
D. shake pyroelectric monitor-alternating voltage sampler (8) Real-time Collection electrical network input voltage value, and judge whether input voltage meets and shake electric criterion requirement;
E. bypass direct current supply-when meeting the electric condition of rolling, normally closed contact J1A, J1D that single-chip microcomputer (1) is controlled electromagnetic relay (2) open, the normal opened contact J2 of normal opened contact J1B, the J1C of electromagnetic relay (2) and solid-state relay (3) is closed, last energy capacitance set (4) is supplied with direct current through DC/DC power supply (6), direct current power supply loop (11) to contactor (12) successively, and time delay certain hour, to maintain contactor (12) adhesive, not thread off;
F. switchback Alternating Current Power Supply-when time delay finishes, single-chip microcomputer (1) is controlled normal opened contact J1B, the J1C of electromagnetic relay (2) and the normal opened contact J2 of solid-state relay (3) opens, normally closed contact J1A, the J1D of electromagnetic relay (2) are closed, stop energy capacitance set (4) and supply with direct current to contactor (12), switchback electrical network (10) is supplied with alternating current to contactor (12).
9. control method according to claim 8, it is characterized in that, front with execution described " rolling pyroelectric monitor " after carrying out described " status monitoring ", also carry out fault self-checking, if there is fault, time delay " dropout " function exits automatically, and maintains contactor (12) adhesive with alternating current, and carries out faulty indication.
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| CN106208339A (en) * | 2016-07-20 | 2016-12-07 | 合肥联信电源有限公司 | A kind of compensation motor DC-BANK |
| CN106301141A (en) * | 2016-08-31 | 2017-01-04 | 新能凤凰（滕州）能源有限公司 | Anti-interference electricity device and method for control loop of asynchronous motor |
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| CN110071015A (en) * | 2019-05-13 | 2019-07-30 | 沈阳睿捷电力科技有限公司 | A kind of anti-contactor shakes the quick alternating current-direct current switching device of bypass type of electricity |
| CN111613481A (en) * | 2020-05-28 | 2020-09-01 | 浙江炬诺电器股份有限公司 | Anti-interference electricity intelligent controller based on double energy storage capacitors |
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| CN113471017A (en) * | 2021-07-09 | 2021-10-01 | 珠海万力达电气自动化有限公司 | Switching control method of anti-interference module and anti-interference module |
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| CN106208339B (en) * | 2016-07-20 | 2019-04-12 | 合肥联信电源有限公司 | A kind of compensation motor anti-swing electrical system |
| CN106208339A (en) * | 2016-07-20 | 2016-12-07 | 合肥联信电源有限公司 | A kind of compensation motor DC-BANK |
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| CN106301141B (en) * | 2016-08-31 | 2019-06-18 | 新能凤凰（滕州）能源有限公司 | Anti-interference electricity device and method for control loop of asynchronous motor |
| CN106384694A (en) * | 2016-10-14 | 2017-02-08 | 数源科技股份有限公司 | Magnetic latching relay with stable working and control method thereof |
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| CN107359694B (en) * | 2017-08-24 | 2023-05-16 | 上海一德电气科技有限公司 | Backup contactor holding type self-adaptive anti-interference device and method thereof |
| CN107359694A (en) * | 2017-08-24 | 2017-11-17 | 上海德电气科技有限公司 | Backup type contactor maintenance adaptively anti-shake electric installation and its method |
| CN108521169A (en) * | 2018-06-11 | 2018-09-11 | 泰豪科技股份有限公司 | A kind of voltage shock avoiding circuit and system |
| CN108521169B (en) * | 2018-06-11 | 2023-05-23 | 泰豪科技股份有限公司 | Anti-interference circuit and system |
| CN110071015A (en) * | 2019-05-13 | 2019-07-30 | 沈阳睿捷电力科技有限公司 | A kind of anti-contactor shakes the quick alternating current-direct current switching device of bypass type of electricity |
| CN111613481A (en) * | 2020-05-28 | 2020-09-01 | 浙江炬诺电器股份有限公司 | Anti-interference electricity intelligent controller based on double energy storage capacitors |
| CN111613481B (en) * | 2020-05-28 | 2022-07-22 | 浙江炬诺电器股份有限公司 | Anti-interference electricity intelligent controller based on double energy storage capacitors |
| CN112821347A (en) * | 2021-03-17 | 2021-05-18 | 广东电网有限责任公司 | Electrified current protection circuit |
| CN113471017A (en) * | 2021-07-09 | 2021-10-01 | 珠海万力达电气自动化有限公司 | Switching control method of anti-interference module and anti-interference module |
| CN113471017B (en) * | 2021-07-09 | 2024-05-14 | 珠海万力达电气自动化有限公司 | Switching control method of anti-interference module and anti-interference module |
| CN117220241A (en) * | 2023-11-09 | 2023-12-12 | 深圳市中电电力技术股份有限公司 | Self-adaptive motor control loop anti-interference device and method |
| CN117220241B (en) * | 2023-11-09 | 2024-04-05 | 深圳市中电电力技术股份有限公司 | Self-adaptive motor control loop anti-interference device and method |
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