CN107068488A - New type of current source formula contactor Anti-electricity dazzling device and its control method - Google Patents
New type of current source formula contactor Anti-electricity dazzling device and its control method Download PDFInfo
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- CN107068488A CN107068488A CN201611046775.8A CN201611046775A CN107068488A CN 107068488 A CN107068488 A CN 107068488A CN 201611046775 A CN201611046775 A CN 201611046775A CN 107068488 A CN107068488 A CN 107068488A
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- Prior art keywords
- current
- contactor
- coil
- super capacitor
- logic
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
- H01H47/04—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current
- H01H47/043—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current making use of an energy accumulator
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
Abstract
The present invention discloses a kind of New type of current source formula contactor Anti-electricity dazzling device and its control method, including：Power supply and energy storage control and measuring unit；The current source output control unit of DC current；Busbar voltage and contactor current measuring unit；Alternating current-direct current switches and EMC suppresses unit；For manually-operated man-machine interaction unit；Core processing unit；Core processing unit suppresses unit and man-machine interaction unit electric connection with power supply and energy storage control with measuring unit, current source output control unit, busbar voltage and contactor current measuring unit, alternating current-direct current switching and EMC respectively.The present invention need not set contactor parameter and be adjusted with outside, and Auto-matching contactor direct current maintains electric current and exchanges maintenance size of current；It need not consider electric current is excessive or too small caused by whether whether being matched with the D.C. resistance of contactor when direct current is maintained；It can also ensure average anode current size in the case where loading dead short.
Description
Technical field
The present invention relates to a kind of New type of current source formula contactor Anti-electricity dazzling device and its control method.
Background technology
A.C. contactor is generally used in alternating current circuit, its current induced magnetic field flowed through using coil, so that contact
Closure, to reach the purpose of control load appliance.After energization, coil can produce powerful magnetic field, make the quiet iron in electromagnetic system
Core produces electromagnetic attraction armature, and makes the action of switch or closure with moving contact, and during power-off, magnetic force disappears, and contact recovers again
To as former state：It is normally closed, close, it is normally opened, open.Traditional A.C. contactor circuit is during use, due to electric power system
It is unstable to occur to shake the phenomenon put and instantaneous loss of pressure occur, cause contactor operationally to discharge suddenly, have impact on load circuit
Safe and stable operation, huge economic loss and potential safety hazard is brought to continuous production enterprise.
In order to solve this technical problem, prior art cuts direct current, direct current when occurring to shake electricity using switching circuit
Electricity controls output voltage to be powered to contactor coil by voltage output control circuit, and size is provided not for different contactors
Same output voltage.Voltage output control circuit has two kinds at present, and one kind automatically adjusts for microprocessor, and one kind is to provide outside
Short circuit mode is adjusted.Wherein microprocessor is automatically adjusted, it is necessary to contactor resistance be inputted, by contactor resistance with contacting
The product of device running current converses output voltage, and microprocessor adjusts out corresponding voltage and exported；Outside short circuit
Regulation is that, by particular electrical circuit, by outside terminal or regulation button, it is the output voltage of setting to make the voltage of output, to match
Contactor.After rolling electricity terminates, then direct current electricity output is turned off, Alternating Current Power Supply is switched to using switching circuit.
Prior art has the disadvantages that：Using voltage output mode, it is difficult to obtain corresponding when contactor direct current is maintained
Voltage swing.Contactor direct current mainly determines it is electric current when maintaining, and the direct current of contactor must be inputted by wanting acquisition DC voltage
Resistance, and be multiplied by resistance to obtain output voltage indirectly with alternating current again.The D.C. resistance of contactor must actually be measured and obtained
, therefore increase workload.If contactor resistance setting mistake is not provided with, the voltage that contactor is exported can be caused with connecing
The maintenance DC voltage that tentaculum needs is mismatched.Output DC voltage, which crosses conference, causes contactor to burn or device damage, output
Direct current size is too small, and contactor can not lean on direct current adhesive when causing to shake electricity, cause contactor to discharge.The voltage-regulation way of output,
When contactor coil is short-circuit, device direct voltage output is easily caused to burn because output current is excessive.
The content of the invention
Electric current is maintained it is an object of the invention to provide a kind of contactor that can be provided using controllable current source when shaking electricity,
Auto-matching contactor direct current maintains electric current and exchanges the New type of current source formula contactor Anti-electricity dazzling device for maintaining electric current and its control
Method processed.
To achieve these goals, the technical solution adopted in the present invention is as follows：
A kind of New type of current source formula contactor Anti-electricity dazzling device, it is used cooperatively with contactor, and it includes：
For providing electric energy and storing the power supply and energy storage control and measuring unit of electric energy；
The current source output control unit of the DC current matched for control output with contactor；
For busbar voltage and the contactor current measuring unit of the working current value for monitoring bus voltage value and contactor；
Alternating current-direct current switching and EMC for the power supply of switching contactor coil suppress unit；
For manually-operated man-machine interaction unit；
For the core processing unit for controlling whole device to run；
The core processing unit respectively with the power supply and energy storage control and measuring unit, current source output control list
Member, busbar voltage and contactor current measuring unit, alternating current-direct current switching and EMC suppression units and man-machine interaction unit electrically connect
Connect.
It is preferred that, the core processing unit includes microprocessor and its peripheral circuit.
It is preferred that, the power supply and energy storage control include AC/DC power modules, super capacitor fast charging with measuring unit
Circuit, super capacitor and DC/DC power modules；The input access civil power of the AC/DC power modules, the AC/DC power supplys
The output end of module is connected with the anode of the first diode, the negative electrode of the first diode negative electrode respectively with the second diode, institute
State the input connection of the input and the DC/DC power modules of super capacitor fast charging circuit, the DC/DC power supplys mould
The earth terminal of the output end of block and the DC/DC power modules is electrically connected with the core processing unit respectively, described super
The output end of capacitor fast charging circuit is connected with the anode of the second diode, the output end of super capacitor fast charging circuit with
The first end connection of first resistor, is connected between the second end of first resistor and the earth terminal of super capacitor fast charging circuit
Second resistance, the second end of first resistor is also electrically connected with the core processing unit；Super capacitor fast charging circuit
The super capacitor is also associated between the earth terminal of output end and super capacitor fast charging circuit, the super capacitor includes
First be sequentially connected in series is to the 7th super capacitor, wherein the positive pole of the first super capacitor and super capacitor fast charging circuit
Output end connection, the negative pole of the 7th super capacitor is connected with the earth terminal of super capacitor fast charging circuit, the super electricity
The earth terminal for holding quick-charging circuit is connected with the earth terminal of AC/DC power modules, the super capacitor fast charging circuit
Fuse is connected between earth terminal and the first terminals of contactor coil.
It is preferred that, the busbar voltage includes voltage transmitter and current transducer, institute with contactor current measuring unit
Voltage transmitter is stated including first coil and the second coil, the first coil is connected in series on bus, the of the second coil
One end is connected with microprocessor, and the second end ground connection of the second coil, the second coil is connected in parallel with 3rd resistor；The electric current becomes
Device is sent to include tertiary coil and the 4th coil, the first end of tertiary coil is connected with microprocessor, the second end ground connection of the 3rd circle,
Tertiary coil is connected with the 4th resistor coupled in parallel.
It is preferred that, the current source output control unit includes the first DC transformating power, the second DC transformating power, the
One to the 3rd triode, the 4th to the 6th diode and the first to the 3rd constant-current control circuit, the first DC transformating power, second
Negative electrode of the input of DC transformating power respectively with the first diode is connected, the output end of the first DC transformating power respectively with
The collection connection of the colelctor electrode of first triode, the second triode, the output end of the second DC transformating power and the 3rd triode
Colelctor electrode is connected, and the base stage of the first to the 3rd triode is electrically connected with core processing unit respectively, the transmitting of the first triode
Pole is connected with the input of the first constant-current control circuit, and the output end of the first constant-current control circuit and the anode of the 6th diode connect
Connect, the emitter stage of the second triode is connected with the input of the second constant-current control circuit, the output end of the second constant-current control circuit
It is connected with the anode of the 5th diode, the emitter stage of the 3rd triode is connected with the input of the 3rd constant-current control circuit, the 3rd
The output end of constant-current control circuit is connected with the anode of the 4th diode, and the negative electrode of the 4th to the 6th diode is connected with each other.
It is preferred that, the alternating current-direct current switching and EMC suppress unit and include EMC suppression and anti-jamming circuit, the first field-effect
Pipe, the second FET, the first relay and the 3rd diode and full-wave rectification bridge, first relay include the 5th coil
And first switch, the first end of the 5th coil is connected with core processing unit, the second end ground connection of the 5th coil, the 5th coil with
5th resistor coupled in parallel is connected；EMC suppresses and the first output end of anti-jamming circuit is connected with the first end of the 4th coil, the 4th line
The second end the first terminals respectively with full-wave rectification bridge of circle, the first end of first switch are connected, the second end of first switch
The second terminals, the second terminals of contactor coil respectively with full-wave rectification bridge are connected, the leakage of first FET
The 3rd terminals connection of pole and full-wave rectification bridge, the source electrode of the first FET and the first terminals of contactor coil connect
Connect, the grid of the first FET is connected with core processing unit；Second terminals of contactor coil and the 3rd diode
Negative electrode is connected, and the anode of the 3rd diode is connected with the source electrode pole of the second FET, the grid and core of the second FET
Processing unit is connected, and the drain electrode of the second FET is connected with the negative electrode of the 4th diode.
The present invention also provides a kind of control method of the New type of current source formula contactor Anti-electricity dazzling device, including following step
Suddenly：
A) initialization program；
B) analog acquisition is performed to calculate and energy storage calculating logic；
C) perform contactor operation identification and export logic with current source；
D) perform and shake point identification and alternating current-direct current switch logic；
E man-machine interaction logic) is performed；
F) it is back to step B).
It is preferred that, the row analog acquisition is calculated to be comprised the following steps with energy storage calculating logic：
A1 the analogue data collected) is converted into digital number using the ADC AD conversion units in core processing unit
According to；
B1 the storage of the busbar voltage data after analog-to-digital conversion, contactor running current data and super capacitor) is obtained
Can voltage data；
C1 the amplitude of the tank voltage data of busbar voltage data, contactor running current data and super capacitor) is calculated；
D1) judge whether the amplitude of busbar voltage data is more than the normal setting value of voltage, if into next step, entering if not
Enter step H1)；
E1) judge whether contactor running current data amplitude is more than electric current and has stream setting value, if into next step, if
No entrance step H1)；
F1) judge whether the amplitude of the tank voltage data of super capacitor is more than tank voltage setting value, if under
One step, if it is not, into step H1)；
G1) judge to prepare whether mark is zero, if so, logic terminates, if it is not, putting 1 by mark is prepared, logic terminates；
Whether be zero, if so, logic terminates if H1) judging switching mark, if it is not, into next step；
I1) judge to prepare whether mark puts 1, if so, will prepare flag clear, logic terminates, if it is not, logic terminates.
It is preferred that, the contactor operation identification comprises the following steps with current source output logic：
A2) judge to prepare whether mark puts 1, if into step C2), if it is not, into next step；
B2) judge whether contactor running current data amplitude is less than electric current and has stream setting value, if so, when operation is confirmed
Between counter O reset, running mark reset, control the first to the 3rd triode close, logic terminates, if it is not, logic terminates；
C2) judge whether contactor running current data amplitude is more than electric current and has stream setting value, if it is not, logic terminates, if
It is, into next step；
Whether be zero, if it is not, logic terminates if D2) judging running mark, if so, into next step；
E2) judge to run whether the total time spent during acknowledging time rolling counters forward is more than 500ms, if it is not, logic knot
Beam, if so, into next step；
F2) running mark puts 1, controls the first to the 3rd triode to close according to the size of contactor running current data amplitude
Close or turn on, logic terminates.
It is preferred that, the rolling point identification includes following steps with alternating current-direct current switch logic：
A3) judge to prepare whether mark puts 1, if into next step, logic terminates if not；
B3) judge whether running mark puts 1, if into next step, logic terminates if not；
Whether be zero, if into next step, if not into step F3 if C3) judging switching mark)；
D3) judge whether whether busbar voltage data amplitude be less than the normal setting value of voltage or busbar voltage data amplitude
Mutation 20% busbar voltage rated value of reduction, if into next step, logic terminates if not；
E3) control first switch disconnects, and the first FET disconnects, second effect of control after the time value of delay to setting
Should pipe conducting, shake a point counter O reset, switching mark puts 1, and logic terminates；
F3) judge to shake whether the total time spent when point delay counter is counted is more than rolling point time setting value, if so, carrying
Show that the warning of system cut-off signal is output to man-machine interaction unit, into step H3)；Enter next step if not；
G3) judge whether the amplitude of busbar voltage data is more than busbar voltage normal value, if it is not, logic terminates, if so, carrying
Show that rolling electric signal warning is output to man-machine interaction unit, into next step；
H3) disconnecting the second FET and being delayed to the time value of setting controls the first FET to close, closure the
One switch, switching mark is reset, and prepares flag clear, and running mark is reset, and logic terminates.
Compared with prior art, the beneficial effect of formula contactor Anti-electricity dazzling device in New type of current source of the present invention is：This hair
The bright contactor parameter that need not set is adjusted with outside, and Auto-matching contactor direct current maintains electric current and exchanges maintenance size of current；
It need not consider that electric current is excessive or too small caused by whether whether being matched with the D.C. resistance of contactor when direct current is maintained, and prevents because of electricity
Stream output is excessive to burn contactor coil, prevents from causing contactor to discharge because electric current is too small；In the case where loading dead short
Also average anode current size can be ensured, will not be because of the too small dress for causing device output current excessive and causing of contactor resistance
Put and burn or contactor burnout problems.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of formula contactor Anti-electricity dazzling device in New type of current source of the present invention；
Fig. 2 is the main logic flow chart element of the control method of formula contactor Anti-electricity dazzling device in New type of current source of the present invention
Figure；
Fig. 3 is analog acquisition of the present invention calculating and the flow chart of energy storage calculating logic；
Fig. 4 is that contactor of the present invention runs the flow chart that identification exports logic with current source；
Fig. 5 shakes point identification and the flow chart of alternating current-direct current switch logic to be of the present invention；
Fig. 6 is full-wave rectification bridge and first switch, the catenation principle figure of the first FET.
Embodiment
The present invention is further described below with reference to specific embodiment.
Refer to shown in Fig. 1 to Fig. 5, the present invention provides a kind of New type of current source formula contactor Anti-electricity dazzling device, including：Its
Used cooperatively with contactor, contactor includes contactor coil, the New type of current source formula contactor Anti-electricity dazzling device includes：
For providing electric energy and storing the power supply and energy storage control and measuring unit 1 of electric energy；
The current source output control unit 2 of the DC current matched for control output with contactor；
For busbar voltage and the contactor current measuring unit of the working current value for monitoring bus voltage value and contactor
3；
Alternating current-direct current switching and EMC for the power supply of switching contactor coil suppress unit 4；
For manually-operated man-machine interaction unit, human-computer interaction interface mainly has button and LCD liquid crystal displays to constitute, convenient
User checks and parameter setting to the data of device；
For the core processing unit for controlling whole device to run, the core processing unit includes microprocessor and its outer
Enclose circuit；
The core processing unit respectively with the power supply and energy storage control and measuring unit 1, current source output control list
Member 2, busbar voltage and contactor current measuring unit 3, alternating current-direct current switching and EMC suppression units 4 and man-machine interaction unit are electrical
Connection.
In the present invention, the power supply and energy storage control and measuring unit 1 are fast including AC/DC power modules, super capacitor
Fast charging circuit, super capacitor and DC/DC power modules；The input access civil power of the AC/DC power modules, the AC/
The output end of DC power module is connected with the first diode D1 anode, the first diode D1 negative electrode respectively with the second diode
The input connection of D2 negative electrode, the input of the super capacitor fast charging circuit and the DC/DC power modules, it is described
The earth terminal of the output end of DC/DC power modules and the DC/DC power modules electrically connects with the core processing unit respectively
Connect, the output end of the super capacitor fast charging circuit is connected with the second diode D2 anode, super capacitor fast charging
The output end of circuit is connected with first resistor R1 first end, first resistor R1 the second end and super capacitor fast charging circuit
Earth terminal between be connected with second resistance R2, first resistor R1 the second end is also electrically connected with the core processing unit；
It is also associated between the output end of super capacitor fast charging circuit and the earth terminal of super capacitor fast charging circuit described super
Level electric capacity, the super capacitor includes the first to the 7th super capacitor SC1 to SC7 being sequentially connected in series, wherein first is super
Electric capacity SC1 positive pole is connected with the output end of super capacitor fast charging circuit, the 7th super capacitor SC7 negative pole and super electricity
Hold the earth terminal connection of quick-charging circuit, earth terminal and the AC/DC power modules of the super capacitor fast charging circuit
Earth terminal is connected, and is connected between the earth terminal of the super capacitor fast charging circuit and the first terminals XQ2 of contactor coil
It is connected to fuse FU.
In the power supply and energy storage control and measuring unit 1, civil power is converted into direct current by the AC/DC power modules
Ua=15V, direct current Ua charges to super capacitor, and core processing unit is by detecting the electricity at first resistor R1 the second end
Press to calculate the storage ENERGY E of super capacitor；Direct current Ua is converted into direct current Ud=5V by the DC/DC power modules, is given
Core processing unit is powered.First diode D1 and the second diode D2 ensure that when AC/DC power modules because system is supplied
Electricity is too low when can not work, and energy storage of the super capacitor to subsequent conditioning circuit discharges.
In the present invention, the busbar voltage includes voltage transmitter TV with contactor current measuring unit 3 and electric current becomes
Device TA, the voltage transmitter TV is sent to include first coil and the second coil, the first coil is connected in series on bus, the
The first end of two coil is connected with microprocessor, and the second end ground connection of the second coil, the second coil is in parallel with 3rd resistor R3 even
Connect；The current transducer TA includes tertiary coil and the 4th coil, and the first end of tertiary coil is connected with microprocessor, and the 3rd
The second end ground connection of circle, tertiary coil is connected in parallel with the 4th resistance R4.
In the busbar voltage and contactor current measuring unit 3, the voltage transmitter TV can detect bus electricity
Press and the bus voltage signal detected is delivered to core processing unit, the current transducer TA can detect contactor
The contactor running current signal detected is simultaneously delivered to core processing unit by running current, and core processing unit is according to bus
Voltage signal and contactor running current signal of change go out actual bus voltage size and contactor running current size.
In the present invention, the current source output control unit 2 includes the first DC transformating power DC1, the change of the second direct current
Change power supply DC2, the first to the 3rd triode, the 4th to the 6th diode and the first to the 3rd constant-current control circuit, the first direct current
The negative electrode of converting power source DC1, the second DC transformating power DC2 input respectively with the first diode D1 is connected, the first direct current
Colelctor electrode, the second triode TQ2 collection of converting power source DC1 output end respectively with the first triode TQ1 are connected, the second direct current
Converting power source DC2 output end is connected with the 3rd triode TQ3 colelctor electrode, the base stage of the first to the 3rd triode respectively with core
Heart processing unit is electrically connected with, and the first triode TQ1 emitter stage is connected with the input of the first constant-current control circuit, and first is permanent
The output end of flow control circuit is connected with the 6th diode D6 anode, the second triode TQ2 emitter stage and the second constant current control
The input connection of circuit processed, the output end of the second constant-current control circuit is connected with the 5th diode D5 anode, the three or three pole
Pipe TQ3 emitter stage is connected with the input of the 3rd constant-current control circuit, the output end and the four or two of the 3rd constant-current control circuit
Pole pipe D4 anode connection, the negative electrode of the 4th to the 6th diode is connected with each other.
In the current source output control unit 2,15V direct currents can be converted into by the first DC transformating power DC1
15V direct currents can be converted into 12V direct current Uc=12V, institute by 24V direct currents Ub=24V, the second DC transformating power DC2
State the first constant-current control circuit can constant output current be 100mA direct current, second constant-current control circuit can be defeated
Go out the constant direct current for 200mA of electric current, the 3rd constant-current control circuit can constant output current be 400mA direct current
Electricity.
In specific application, the state of the first to the 3rd triode is designated as TQn, when TQn takes values below, first to
The size of current of the folding condition of 3rd triode and the direct current of output is as shown in the table：
In the present invention, alternating current-direct current switching and EMC suppress unit 4 include EMC suppress and anti-jamming circuit, first
Effect pipe SQ1, the second FET SQ2, the first relay and the 3rd diode D3 and full-wave rectification bridge, first relay
Including the 5th coil and first switch DLJ, the first end of the 5th coil is connected with core processing unit, the second end of the 5th coil
Ground connection, the 5th coil is connected in parallel with the 5th resistance R5；First output end of EMC suppression and anti-jamming circuit and the 4th coil
First end is connected, and the second end of the 4th coil the first terminals respectively with full-wave rectification bridge, first switch DLJ first end connect
Connect, the second terminals, the second terminals of contactor coil of first switch DLJ the second end respectively with full-wave rectification bridge connect
Connect, the drain electrode of the first FET SQ1 and the 3rd terminals of full-wave rectification bridge are connected, the first FET SQ1 source
The first terminals connection of pole and contactor coil, the first FET SQ1 grid is connected with core processing unit；Contactor
Second terminals of coil are connected with the 3rd diode D3 negative electrode, the 3rd diode D3 anode and the second FET SQ2
The connection of source electrode pole, the second FET SQ2 grid is connected with core processing unit, the second FET SQ2 drain electrode and
The negative electrode connection of 4th diode.
When point occurs to shake for busbar voltage, core processing unit control first switch DLJ and the first FET SQ1 breaks
Open, that is, disconnect power supply of the exchange to contactor coil, then control the second FET SQ2 to turn on, current source output control list
Member 2 controls the first to the 3rd constant-current control circuit to export matched electric current according to the contactor alternating current measured
Constant direct current, makes contactor keep direct current adhesive.After busbar voltage recovers normal, core processing unit controls second
Effect pipe SQ2 disconnects, and then controls first switch DLJ and the first FET SQ1 conductings, the alternating current for the device coil that resumes contacts
Pressure.
Present invention also offers a kind of control method of the New type of current source formula contactor Anti-electricity dazzling device, its feature exists
In comprising the following steps：
A) initialization program；
B) analog acquisition is performed to calculate and energy storage calculating logic；
C) perform contactor operation identification and export logic with current source；
D) perform and shake point identification and alternating current-direct current switch logic；
E man-machine interaction logic) is performed；
F) it is back to step B).
Wherein, the row analog acquisition is calculated and comprised the following steps with energy storage calculating logic：
A1 the analogue data collected) is converted into digital number using the ADC AD conversion units in core processing unit
According to；
B1 the storage of the busbar voltage data after analog-to-digital conversion, contactor running current data and super capacitor) is obtained
Can voltage data；
C1 the amplitude of the tank voltage data of busbar voltage data, contactor running current data and super capacitor) is calculated；
D1) judge whether the amplitude UL of busbar voltage data is more than the normal setting value ULHset of voltage, if into next
Step, if not into step H1)；
E1) judge whether contactor running current data amplitude IL is more than electric current and has stream setting value, if into next step,
Enter step H1 if not)；
F1) judge whether the amplitude UC of the tank voltage data of super capacitor is more than tank voltage setting value, if into
Next step, if it is not, into step H1)；
G1) judge to prepare whether mark is zero, if so, logic terminates, if it is not, putting 1 by mark is prepared, logic terminates；
Whether be zero, if so, logic terminates if H1) judging switching mark, if it is not, into next step；
I1) judge to prepare whether mark puts 1, if so, will prepare flag clear, logic terminates, if it is not, logic terminates.
The contactor operation identification comprises the following steps with current source output logic：
A2) judge to prepare whether mark puts 1, if into step C2), if it is not, into next step；
B2) judge whether contactor running current data amplitude IL is less than electric current and has stream setting value, if so, operation is confirmed
Time counter is reset, and running mark is reset, and the first to the 3rd triode of control is closed, and logic terminates, if it is not, logic terminates；
C2) judge whether contactor running current data amplitude IL is more than electric current and has stream setting value, if it is not, logic terminates,
If so, into next step；
Whether be zero, if it is not, logic terminates if D2) judging running mark, if so, into next step；
E2) judge to run whether the total time spent during acknowledging time rolling counters forward is more than 500ms, if it is not, logic knot
Beam, if so, into next step；
F2) running mark puts 1, controls the first to the 3rd triode to close according to the size of contactor running current data amplitude
Close or turn on, logic terminates.
The rolling point identification includes following steps with alternating current-direct current switch logic：
A3) judge to prepare whether mark puts 1, if into next step, logic terminates if not；
B3) judge whether running mark puts 1, if into next step, logic terminates if not；
Whether be zero, if into next step, if not into step F3 if C3) judging switching mark)；
D3) judge whether busbar voltage data amplitude UL is less than the normal setting value of voltage or busbar voltage data amplitude and is
20% busbar voltage rated value of no mutation reduction, if into next step, logic terminates if not；
E3) control first switch DLJ is disconnected, and the first FET SQ1 is closed, after the time value 200us of delay to setting
Control the second FET SQ2 to turn on, shake point counter O reset, switching mark puts 1, and logic terminates；
F3) judge to shake whether the total time spent when point delay counter is counted is more than rolling point time setting value, if so, carrying
Show that the warning of system cut-off signal is output to man-machine interaction unit, into step H3)；Enter next step if not；
G3) judge whether the amplitude UL of busbar voltage data is more than busbar voltage normal value, if it is not, logic terminates, if so,
Prompting shakes electric signal warning and is output to man-machine interaction unit, into next step；
H3) disconnecting the second FET SQ2 and being delayed to the time value of setting controls the first FET SQ1 to close,
First switch DLJ is closed, switching mark is reset, prepares flag clear, running mark is reset, and logic terminates.
In the present invention, come pair by gathering busbar voltage AUL, contactor running current AIL and super-capacitor voltage AUC
Contactor running status and super capacitor energy-storage situation are judged.Control logic calculates mother respectively by ADC digital-to-analogue conversions
The amplitude size UL of line voltage, the amplitude size IL of contactor running current and the amplitude size UC of super-capacitor voltage.It is female
Line voltage UL is more than busbar voltage normal voltage setting value ULHset, and contactor running current is put more than certain electric current threshold
After ILHset, super capacitor energy-storage voltage UC are more than tri- conditions of tank voltage setting value UCHset while meeting, contactor fortune
Row identification exports logic with current source, shakes the preparation mark ChargeFlag of the two logics of point identification with alternating current-direct current switch logic
1 can be just put, two logics can just carry out follow-up judgement, otherwise will not enter decision logic.When being collected in ready logic not
When meeting condition, if it find that device is proceeding by switching (in the case that contactor coil is in current source maintenance),
It will will not then prepare to indicate ChargeFlag clear 0.
Contactor running current amplitude IL puts ILHset more than certain electric current threshold when contactor is run, reliable to ensure
Ground confirms the operation that contactor has been stablized, and run time confirms that rolling counters forward total time is more than after 500ms, contactor operation
Mark JCQrunFlag can just be set to 1.After contactor running mark is set, control logic start calculating should control first to
3rd constant-current control circuit should export great DC current and be matched substantially with alternating current.When contactor electric current is in 100mA
When following, directly control exports 100mA direct currents, and when the running current of contactor is more than 700mA, control output 700mA is straight
Stream electricity., it is necessary to calculate output current when between the two, to improve reliability, using the control rounded up
Mode, output is controlled to the first to the 3rd constant-current control circuit.
The identification for shaking electricity is to have run contactor running mark JCQrunFlag in contactor for 1, and super capacitor is
It is 1 that energy storage and voltage normally prepare mark ChargeFlag afterwards, judges that busbar voltage amplitude UL is mutated reduction 20%Ue suddenly
Or contactor release voltage Ulset is slowly decreased to, and if now control logic cut-out alternating voltage, supply DC voltage contact
Device can discharge.Control logic is first turned off alternating current, opens DLJ and shut-off SQ1, to ensure that SQ1 and DLJ reliably disconnects, passes through
SQ2 is turned on after crossing a 200us delay.The contactor coil turned on after SQ2 now is defeated by the first to the 3rd constant-current control circuit
The electric current gone out provides adhesive, and size of current and contactor that the first to the 3rd constant-current control circuit is provided is in Alternating Current Power Supply
Exchange size is matched substantially, can meet contactor reliably adhesive.When alternating voltage recovers normal (being more than ULHset) or straight
The time (Thset) that stream is kept arrives, and control logic will turn off SQ2, cuts off and exchange (conducting SQ1 is connected after direct current and the 200us that is delayed
And DLJ).Rolling electricity or power cut-off information can be prompted according to condition simultaneously.
In summary, the present invention is recordable and preserves AC current values of the contactor in normal adhesive, in system voltage
When electricity is shaken in generation, judge that system shakes device after electricity and rapidly cuts off contactor AC power by control method, by contactor
Be switched to DC source power supply circuit, this DC source supply current can software it is adjustable, the alternating current that output current and device are recorded
Match.Contactor reliable adhesive when generation system shakes electricity is ensure that, friendship is switched to again after system power supply is recovered normally
Flow power supply.The device and its control method, it is entirely avoided the voltage and contactor line existed using direct voltage output mode
What circle resistance was present is difficult to problem, without the problems such as whether output direct current matches with contactor be concerned about.It enormously simplify anti-shake
The debugging difficulty of electric installation, it also avoid because parameter setting is mismatched, the rolling electricity caused can not maintain contactor adhesive or damage
The problems such as evil Anti-electricity dazzling device.
Schematical above that the present invention and embodiments thereof are described, the description does not have restricted, institute in accompanying drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if the common skill of this area
Art personnel are enlightened by it, without departing from the spirit of the invention, are designed and the technical scheme without creative
Similar frame mode and embodiment, all should belong to protection scope of the present invention.
Claims (10)
1. a kind of New type of current source formula contactor Anti-electricity dazzling device, it is used cooperatively with contactor, it is characterised in that it includes：
For providing electric energy and storing the power supply and energy storage control and measuring unit of electric energy；
The current source output control unit of the DC current matched for control output with contactor；
For busbar voltage and the contactor current measuring unit of the working current value for monitoring bus voltage value and contactor；
Alternating current-direct current switching and EMC for the power supply of switching contactor coil suppress unit；
For manually-operated man-machine interaction unit；
For the core processing unit for controlling whole device to run；
The core processing unit respectively with the power supply and energy storage control and measuring unit, current source output control unit, mother
Line voltage suppresses unit with contactor current measuring unit, alternating current-direct current switching and EMC and man-machine interaction unit is electrically connected with.
2. formula contactor Anti-electricity dazzling device in New type of current source as claimed in claim 1, it is characterised in that the core processing list
Member includes microprocessor and its peripheral circuit.
3. formula contactor Anti-electricity dazzling device in New type of current source as claimed in claim 2, it is characterised in that the power supply and energy storage
Control includes AC/DC power modules, super capacitor fast charging circuit, super capacitor and DC/DC power modules with measuring unit；
The input access civil power of the AC/DC power modules, the output end of the AC/DC power modules and the anode of the first diode
Connection, negative electrode, the input of the super capacitor fast charging circuit of the negative electrode of the first diode respectively with the second diode
And the input connection of the DC/DC power modules, the output end of the DC/DC power modules and the DC/DC power modules
Earth terminal respectively with the core processing unit be electrically connected with, the output end and second of the super capacitor fast charging circuit
The anode connection of diode, the output end of super capacitor fast charging circuit and the first end of first resistor are connected, first resistor
The second end and super capacitor fast charging circuit earth terminal between be connected with second resistance, the second end of first resistor also with
The core processing unit is electrically connected with；The output end of super capacitor fast charging circuit and super capacitor fast charging circuit
The super capacitor is also associated between earth terminal, the super capacitor includes the first to the 7th super electricity being sequentially connected in series
Hold, wherein the positive pole of the first super capacitor is connected with the output end of super capacitor fast charging circuit, the 7th super capacitor is born
Pole is connected with the earth terminal of super capacitor fast charging circuit, the earth terminal and AC/DC of the super capacitor fast charging circuit
The earth terminal connection of power module, the earth terminal of the super capacitor fast charging circuit and the first terminals of contactor coil
Between be connected with fuse.
4. formula contactor Anti-electricity dazzling device in New type of current source as claimed in claim 3, it is characterised in that the busbar voltage with
Contactor current measuring unit includes voltage transmitter and current transducer, and the voltage transmitter includes first coil and second
Coil, the first coil is connected in series on bus, and the first end of the second coil is connected with microprocessor, and the of the second coil
Two ends are grounded, and the second coil is connected in parallel with 3rd resistor；The current transducer includes tertiary coil and the 4th coil, the 3rd
The first end of coil is connected with microprocessor, and the second end ground connection of the 3rd circle, tertiary coil is connected with the 4th resistor coupled in parallel.
5. formula contactor Anti-electricity dazzling device in New type of current source as claimed in claim 4, it is characterised in that the current source output
Control unit includes the first DC transformating power, the second DC transformating power, the first to the 3rd triode, the 4th to the 6th 2 pole
Pipe and the first to the 3rd constant-current control circuit, the first DC transformating power, the input of the second DC transformating power are respectively with the
The negative electrode connection of one diode, the output end of the first DC transformating power colelctor electrode respectively with the first triode, the two or three pole
The collection connection of pipe, the output end of the second DC transformating power is connected with the colelctor electrode of the 3rd triode, the first to the 3rd triode
Base stage be electrically connected with respectively with core processing unit, the input of the emitter stage of the first triode and the first constant-current control circuit
Connection, the output end of the first constant-current control circuit is connected with the anode of the 6th diode, the emitter stage of the second triode and second
The input connection of constant-current control circuit, the output end of the second constant-current control circuit is connected with the anode of the 5th diode, and the 3rd
The emitter stage of triode is connected with the input of the 3rd constant-current control circuit, the output end and the four or two of the 3rd constant-current control circuit
The anode connection of pole pipe, the negative electrode of the 4th to the 6th diode is connected with each other.
6. formula contactor Anti-electricity dazzling device in New type of current source as claimed in claim 5, it is characterised in that the alternating current-direct current switching
And EMC suppresses unit and includes EMC to suppress and anti-jamming circuit, the first FET, the second FET, the first relay and the
Three diodes and full-wave rectification bridge, first relay include the 5th coil and first switch, the first end of the 5th coil with
Core processing unit is connected, and the second end ground connection of the 5th coil, the 5th coil is connected with the 5th resistor coupled in parallel；EMC suppresses and anti-
First output end of interference circuit is connected with the first end of the 4th coil, the second end of the 4th coil respectively with full-wave rectification bridge
The first end connection of first terminals, first switch, the second end of first switch the second terminals respectively with full-wave rectification bridge,
The second terminals connection of contactor coil, the drain electrode of first FET and the 3rd terminals of full-wave rectification bridge connect
Connect, the source electrode of the first FET and the first terminals of contactor coil are connected, at the grid and core of the first FET
Manage unit connection；Second terminals of contactor coil are connected with the negative electrode of the 3rd diode, the anode of the 3rd diode and
The source electrode pole connection of two FETs, the grid of the second FET is connected with core processing unit, the leakage of the second FET
Pole is connected with the negative electrode of the 4th diode.
7. a kind of control method of New type of current source formula contactor Anti-electricity dazzling device as described in claim 1 to 6 is any, it is special
Levy and be, comprise the following steps：
A) initialization program；
B) analog acquisition is performed to calculate and energy storage calculating logic；
C) perform contactor operation identification and export logic with current source；
D) perform and shake point identification and alternating current-direct current switch logic；
E man-machine interaction logic) is performed；
F) it is back to step B).
8. a kind of control method of formula contactor Anti-electricity dazzling device in New type of current source as claimed in claim 7, it is characterised in that institute
State row analog acquisition and calculate and comprise the following steps with energy storage calculating logic：
A1 the analogue data collected) is converted into numerical data using the ADC AD conversion units in core processing unit；
B1 the energy storage electricity of the busbar voltage data after analog-to-digital conversion, contactor running current data and super capacitor) is obtained
Press data；
C1 the amplitude of the tank voltage data of busbar voltage data, contactor running current data and super capacitor) is calculated；
D1) judge whether the amplitude of busbar voltage data is more than the normal setting value of voltage, if into next step, step is entered if not
Rapid H1)；
E1) judge whether contactor running current data amplitude is more than electric current and has stream setting value, if into next step, entering if not
Enter step H1)；
F1) judge whether the amplitude of the tank voltage data of super capacitor is more than tank voltage setting value, if into next step,
If it is not, into step H1)；
G1) judge to prepare whether mark is zero, if so, logic terminates, if it is not, putting 1 by mark is prepared, logic terminates；
Whether be zero, if so, logic terminates if H1) judging switching mark, if it is not, into next step；
I 1) judge to prepare whether mark puts 1, if so, will prepare flag clear, logic terminates, if it is not, logic terminates.
9. a kind of control method of formula contactor Anti-electricity dazzling device in New type of current source as claimed in claim 8, it is characterised in that institute
Contactor operation identification is stated with current source output logic to comprise the following steps：
A2) judge to prepare whether mark puts 1, if into step C2), if it is not, into next step；
B2) judge whether contactor running current data amplitude is less than electric current and has stream setting value, if so, acknowledging time meter will be run
Number device is reset, and running mark is reset, and the first to the 3rd triode of control is closed, and logic terminates, if it is not, logic terminates；
C2) judge whether contactor running current data amplitude is more than electric current and has stream setting value, if it is not, logic terminates, if so, entering
Enter next step；
Whether be zero, if it is not, logic terminates if D2) judging running mark, if so, into next step；
E2) judge to run whether the total time spent during acknowledging time rolling counters forward is more than 500ms, if it is not, logic terminates, if
It is, into next step；
F2) running mark puts 1, according to the size of contactor running current data amplitude control the first to the 3rd triode close or
Conducting, logic terminates.
10. a kind of control method of formula contactor Anti-electricity dazzling device in New type of current source as claimed in claim 9, it is characterised in that
The rolling point identification includes following steps with alternating current-direct current switch logic：
A3) judge to prepare whether mark puts 1, if into next step, logic terminates if not；
B3) judge whether running mark puts 1, if into next step, logic terminates if not；
Whether be zero, if into next step, if not into step F3 if C3) judging switching mark)；
D3) judge whether busbar voltage data amplitude is less than the normal setting value of voltage or whether busbar voltage data amplitude is mutated
20% busbar voltage rated value is reduced, if into next step, logic terminates if not；
E3) control first switch is disconnected, and the first FET disconnects, and the second FET is controlled after the time value of delay to setting
Conducting, shakes point counter O reset, and switching mark puts 1, and logic terminates；
F3) judge to shake whether the total time spent when point delay counter is counted is more than rolling point time setting value, if so, prompting system
System power-off signal warning is output to man-machine interaction unit, into step H3)；Enter next step if not；
G3) judge whether the amplitude of busbar voltage data is more than busbar voltage normal value, if it is not, logic terminates, if so, prompting is shaken
Electric signal warning is output to man-machine interaction unit, into next step；
H3) disconnecting the second FET and being delayed to the time value of setting controls the first FET to close, and closure first is opened
Close, switching mark is reset, prepare flag clear, running mark is reset, and logic terminates.
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