CN107068488B - Current source formula contactor Anti-electricity dazzling device and its control method - Google Patents
Current source formula contactor Anti-electricity dazzling device and its control method Download PDFInfo
- Publication number
- CN107068488B CN107068488B CN201611046775.8A CN201611046775A CN107068488B CN 107068488 B CN107068488 B CN 107068488B CN 201611046775 A CN201611046775 A CN 201611046775A CN 107068488 B CN107068488 B CN 107068488B
- Authority
- CN
- China
- Prior art keywords
- current
- contactor
- connect
- coil
- logic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The present invention discloses a kind of current source formula contactor Anti-electricity dazzling device and its control method, comprising: 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 switching and EMC inhibit unit；For manually-operated man-machine interaction unit；Core processing unit；Core processing unit inhibits unit and man-machine interaction unit to be electrically connected with power supply and energy storage control and 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 without set contactor parameter and it is external adjust, Auto-matching contactor direct current maintains electric current and exchanges maintenance size of current；Electric current caused by whether matching with the D.C. resistance of contactor when without considering that direct current maintains is excessive or too small；It also can guarantee average anode current size in the case where loading dead short.
Description
Technical field
The present invention relates to a kind of current source formula contactor Anti-electricity dazzling device and its control methods.
Background technique
A.C. contactor is commonly used in alternating current circuit, the current induced magnetic field flowed through using coil, to make contact
Closure, to achieve the purpose that control load appliance.After energization, coil can generate powerful magnetic field, make the quiet iron in electromagnetic system
Core generates electromagnetic attraction armature, and makes with moving contact the movement of switch or closure, and when power-off, magnetic force disappears, and contact restores again
To as former state: it is normally closed, it is closed, it is normally opened, it opens.Traditional A.C. contactor circuit during use, due to power supply system
It is unstable contactor to be caused to discharge suddenly at runtime, affect load circuit there is a phenomenon where shaking point instantaneous loss of pressure occur
Safe and stable operation, had brought tremendous economic losses to continuous production type enterprise and security risk.
In order to solve this technical problem, the prior art cuts direct current, direct current using switching circuit when occurring to shake electricity
Electricity controls output voltage by voltage output control circuit and powers to contactor coil, provides size not for different contactors
Same output voltage.There are two types of voltage output control circuit is current, one kind is that microprocessor automatically adjusts, and one kind being to provide outside
Short circuit mode is adjusted.Wherein microprocessor automatically adjust, need to input contactor resistance, by contactor resistance with contact
The product of device running current converses output voltage, and microprocessor adjusts out corresponding voltage and exported；Outside is shorted
Adjusting is, by external terminal or regulation button, to make the output voltage of the voltage setting of output, by particular electrical circuit to match
Contactor.After shaking electricity, then direct current electricity output is turned off, is switched to Alternating Current Power Supply using switching circuit.
The prior art has the disadvantages that using voltage output mode, is difficult to obtain corresponding when contactor direct current maintains
Voltage swing.It mainly determines to be electric current when contactor direct current maintains, the direct current of contactor must be inputted to obtain DC voltage
Resistance, and output voltage is obtained indirectly multiplied by resistance with alternating current again.The D.C. resistance of contactor must actual measurement obtain
, therefore increase workload.If contactor resistance setting mistake or it is not set, will lead to contactor output voltage with connect
The maintenance DC voltage that tentaculum needs mismatches.Output DC voltage it is excessive will lead to contactor burn or device damage, output
Direct current size is too small, and contactor can not be attracted by direct current when leading to shake electricity, and contactor is caused to discharge.Voltage adjusts the way of output,
In contactor coil short circuit, due to exporting, electric current is excessive easily to cause device direct voltage output to burn.
Summary of the invention
The purpose of the present invention is to provide a kind of contactors that can be provided when shaking electricity using controllable current source to maintain electric current,
The current source formula contactor Anti-electricity dazzling device and its controlling party Auto-matching contactor direct current maintenance electric current and exchange maintenance electric current
Method.
To achieve the goals above, the technical solution adopted in the present invention is as follows:
A kind of current source formula contactor Anti-electricity dazzling device, is used cooperatively with contactor comprising:
For providing electric energy and storing the power supply and energy storage control and measuring unit of electric energy；
For controlling the current source output control unit for the DC current that output and contactor match；
For monitoring the busbar voltage and contactor current measuring unit of the working current value of bus voltage value and contactor；
The alternating current-direct current of power supply for switching contactor coil switches and EMC inhibits unit；
For manually-operated man-machine interaction unit；
For controlling the core processing unit of whole device operation；
The core processing unit controls with the power supply and energy storage control and measuring unit, current source output single respectively
Member, busbar voltage and contactor current measuring unit, alternating current-direct current switching and EMC inhibit unit and man-machine interaction unit electrically to connect
It connects.
Preferably, the core processing unit includes microprocessor and its peripheral circuit.
Preferably, the power supply and energy storage control and measuring unit include AC/DC power module, super capacitor fast charging
Circuit, super capacitor and DC/DC power module；The input terminal of the AC/DC power module accesses alternating current, the AC/DC power supply
The output end of module and the anode of first diode connect, the cathode of first diode respectively with the cathode of the second diode, institute
State the input terminal connection of the input terminal and the DC/DC power module of super capacitor fast charging circuit, the DC/DC power supply mould
The ground terminal of the output end of block and the DC/DC power module is electrically connected with the core processing unit respectively, described super
The output end of capacitor fast charging circuit is connect with the anode of the second diode, the output end of super capacitor fast charging circuit with
The first end of first resistor connects, and is connected between the second end of first resistor and the ground terminal of super capacitor fast charging circuit
Second resistance, the second end of first resistor are also electrically connected with the core processing unit；Super capacitor fast charging circuit
The super capacitor is also connected between output end and the ground terminal of super capacitor fast charging circuit, the super capacitor includes
The first to the 7th super capacitor being sequentially connected in series, wherein the anode and super capacitor fast charging circuit of the first super capacitor
Output end connection, the cathode of the 7th super capacitor connect with the ground terminal of super capacitor fast charging circuit, the super electricity
The ground terminal for holding quick-charging circuit is connect with the ground terminal of AC/DC power module, the super capacitor fast charging circuit
Fuse is connected between ground terminal and the first terminals of contactor coil.
Preferably, the busbar voltage and contactor current measuring unit include voltage transmitter and current transducer, institute
Stating voltage transmitter includes first coil and the second coil, and the first coil is connected in series on bus, and the of the second coil
One end is connect 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
Sending device includes tertiary coil and the 4th coil, and the first end of tertiary coil is connect with microprocessor, the second end ground connection of third circle,
Tertiary coil is connect with the 4th resistor coupled in parallel.
Preferably, the current source output control unit includes the first DC transformating power, the second DC transformating power, the
One to third transistor, the 4th to the 6th diode and first to third constant-current control circuit, the first DC transformating power, second
The input terminal of DC transformating power is connect with the cathode of first diode respectively, the output end of the first DC transformating power respectively with
The collection connection of the collector of first triode, the second triode, the output end of the second DC transformating power and third transistor
Collector connection, first to third transistor base stage are electrically connected with core processing unit respectively, the transmitting of the first triode
Pole is connect with the input terminal of the first constant-current control circuit, and the anode of the output end of the first constant-current control circuit and the 6th diode connects
It connects, the emitter of the second triode is connect with the input terminal of the second constant-current control circuit, the output end of the second constant-current control circuit
It is connect with the anode of the 5th diode, the emitter of third transistor is connect with the input terminal of third constant-current control circuit, third
The output end of constant-current control circuit is connect with the anode of the 4th diode, and the cathode of the 4th to the 6th diode is connected with each other.
Preferably, it includes EMC inhibition and anti-jamming circuit, the first field-effect that the alternating current-direct current switching and EMC, which inhibit unit,
Pipe, the second field-effect tube, the first relay and third diode and full-wave rectification bridge, first relay include the 5th coil
And first switch, the first end of the 5th coil are connect with core processing unit, the second end of the 5th coil ground connection, the 5th coil with
The connection of 5th resistor coupled in parallel；EMC inhibits and the first output end of anti-jamming circuit is connect with the first end of the 4th coil, the 4th line
The second end of circle is connect with the first end of the first terminals of full-wave rectification bridge, first switch respectively, the second end of first switch
It is connect respectively with the second terminals of the second terminals of full-wave rectification bridge, contactor coil, the leakage of first field-effect tube
The connection of the third terminals of pole and full-wave rectification bridge, the source electrode of the first field-effect tube and the first terminals of contactor coil connect
It connects, the grid of the first field-effect tube is connect with core processing unit；Second terminals of contactor coil and third diode
Cathode connection, the anode of third diode are connect with the source electrode pole of the second field-effect tube, the grid and core of the second field-effect tube
Processing unit connection, the drain electrode of the second field-effect tube are connect with the cathode of the 4th diode.
The present invention also provides a kind of control methods of current source formula contactor Anti-electricity dazzling device, comprising the following steps:
A) initialization program；
B) analog acquisition is executed to calculate and energy storage calculating logic；
C it) executes contactor operation identification and exports logic with current source；
D it) executes and shakes point identification and alternating current-direct current switch logic；
E man-machine interaction logic) is executed；
F) it is back to step B).
Preferably, the row analog acquisition calculate with energy storage calculating logic the following steps are included:
A1 collected analogue data) is converted into digital number using the ADC AD conversion unit in core processing unit
According to；
B1 the storage of busbar voltage data, contactor running current data and super capacitor after analog-to-digital conversion) is obtained
It 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 greater than the normal setting value of voltage, if enter in next step, if not into
Enter step H1)；
E1) judge whether contactor running current data amplitude is greater than electric current and has stream setting value, if entering in next step, if
It is no to enter step H1)；
F1) judge whether the amplitude of the tank voltage data of super capacitor is greater than tank voltage setting value, if under
One step, if it is not, entering step H1)；
G1) judge to prepare whether mark is zero, if so, logic terminates, if it is not, setting 1 for mark is prepared, logic terminates；
H1) judge whether switching mark is zero, if so, logic terminates, if it is not, entering in next step；
I1) judge to prepare whether mark sets 1, if so, will prepare flag clear, logic terminates, if it is not, logic terminates.
Preferably, contactor operation identification with current source output logic the following steps are included:
A2) judge to prepare whether mark sets 1, if entering step C2), if it is not, entering in 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 first to third transistor close, logic terminates, if it is not, logic terminates；
C2) judge whether contactor running current data amplitude is greater than electric current and has stream setting value, if it is not, logic terminates, if
It is, into next step；
D2) judge whether running mark is zero, if it is not, logic terminates, if so, entering in next step；
E2) judge whether what is spent when operation acknowledging time counter counts total time is greater than 500ms, if it is not, logic knot
Beam, if so, entering in next step；
F2) running mark sets 1, is closed according to the size of contactor running current data amplitude control first to third transistor
It closes or is connected, logic terminates.
Preferably, the rolling point identification includes following steps with alternating current-direct current switch logic:
A3) judge to prepare whether mark sets 1, if entering in next step, logic terminates if not；
B3) judge whether running mark sets 1, if entering in next step, logic terminates if not；
C3) judge whether switching mark is zero, if entering in next step, enter step F3 if not)；
D3) judge whether busbar voltage data amplitude be less than the normal setting value of voltage or busbar voltage data amplitude
Mutation reduces by 20% busbar voltage rated value, if entering in next step, logic terminates if not；
E3) control first switch disconnects, and the first field-effect tube disconnects, second effect of control after the time value of delay to setting
Should pipe conducting, shake a point counter O reset, switching mark sets 1, and logic terminates；
Whether F3) judge to spend when rolling point delay counter counts is greater than a rolling point time setting value total time, if so, mentioning
Show that the warning of system cut-off signal is output to man-machine interaction unit, enter step H3)；Enter if not in next step；
G3) judge whether the amplitude of busbar voltage data is greater than busbar voltage normal value, if it is not, logic terminates, if so, mentioning
Show that shaking electric signal warning is output to man-machine interaction unit, into next step；
H3 it) disconnects the second field-effect tube and controls the first field-effect tube closure, closure the after being delayed to the time value of setting
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 current source formula contactor Anti-electricity dazzling device of the present invention is: the present invention without
Need to set contactor parameter and it is external adjust, Auto-matching contactor direct current maintains electric current and exchanges maintenance size of current；It is not necessarily to
Consider that electric current caused by whether matching with the D.C. resistance of contactor when direct current maintains is excessive or too small, prevents because electric current is defeated
It is excessive out to burn contactor coil, it prevents from causing contactor to discharge because electric current is too small；It can also in the case where loading dead short
Guarantee average anode current size, will not because of contactor resistance it is too small cause device output electric current it is excessive and caused by device burn
It ruins or contactor burnout problems.
Detailed description of the invention
Fig. 1 is the circuit diagram of current source formula contactor Anti-electricity dazzling device of the present invention；
Fig. 2 is the main logic flow diagram of the control method of current source formula contactor Anti-electricity dazzling device of the present invention；
Fig. 3 is the flow chart of analog acquisition of the present invention calculating and energy storage calculating logic；
Fig. 4 is the flow chart that contactor of the present invention operation identification exports logic with current source；
Fig. 5 is the flow chart of the present invention for shaking point identification and alternating current-direct current switch logic；
Fig. 6 is the catenation principle figure of full-wave rectification bridge and first switch, the first field-effect tube.
Specific embodiment
The present invention is further described below combined with specific embodiments below.
Please refer to shown in Fig. 1 to Fig. 5, the present invention provides a kind of current source formula contactor Anti-electricity dazzling device, comprising: its with connect
Tentaculum is used cooperatively, and contactor includes contactor coil, and the 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；
For controlling the current source output control unit 2 for the DC current that output and contactor match；
For monitoring the busbar voltage and contactor current measuring unit of the working current value of bus voltage value and contactor
3；
The alternating current-direct current of power supply for switching contactor coil switches and EMC inhibits unit 4；
For manually-operated man-machine interaction unit, human-computer interaction interface mainly has key and LCD liquid crystal display to constitute, convenient
User checks to the data of device and parameter setting；
For controlling the core processing unit of whole device operation, the core processing unit includes microprocessor and its outer
Enclose circuit；
The core processing unit controls with the power supply and energy storage control and measuring unit 1, current source output single respectively
Member 2, busbar voltage and contactor current measuring unit 3, alternating current-direct current switching and EMC inhibit unit 4 and man-machine interaction unit electrical
Connection.
In the present invention, the power supply and energy storage control and measuring unit 1 are fast including AC/DC power module, super capacitor
Fast charging circuit, super capacitor and DC/DC power module；The input terminal of the AC/DC power module accesses alternating current, the AC/
The output end of DC power module is connect with the anode of first diode D1, the cathode of first diode D1 respectively with the second diode
The input terminal of the cathode of D2, the input terminal of the super capacitor fast charging circuit and the DC/DC power module connects, described
The ground terminal of the output end of DC/DC power module and the DC/DC power module electrically connects with the core processing unit respectively
It connects, the output end of the super capacitor fast charging circuit is connect with the anode of the second diode D2, super capacitor fast charging
The output end of circuit is connect with the first end of first resistor R1, the second end and super capacitor fast charging circuit of first resistor R1
Ground terminal between be connected with second resistance R2, the second end of first resistor R1 is also electrically connected with the core processing unit；
It is also connected between the output end of super capacitor fast charging circuit and the ground terminal of super capacitor fast charging circuit described super
Grade capacitor, the super capacitor includes the first to the 7th super capacitor SC1 to SC7 being sequentially connected in series, wherein first is super
The anode of capacitor SC1 is connect with the output end of super capacitor fast charging circuit, the cathode and super electricity of the 7th super capacitor SC7
Hold the ground terminal connection of quick-charging circuit, ground terminal and the AC/DC power module of the super capacitor fast charging circuit
Ground terminal connection, connects between the ground 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, alternating current is converted into direct current by the AC/DC power module
Ua=15V, direct current Ua charge to super capacitor, the electricity that core processing unit passes through the second end of detection first resistor R1
It presses to calculate the storage ENERGY E of super capacitor；Direct current Ua is converted into direct current Ud=5V by the DC/DC power module, is given
Core processing unit power supply.First diode D1 and the second diode D2 can guarantee when AC/DC power module since system supplies
When electricity is too low to work, super capacitor discharges the energy storage of subsequent conditioning circuit.
In the present invention, the busbar voltage and contactor current measuring unit 3 include that voltage transmitter TV and electric current become
Sending device TA, the voltage transmitter TV includes first coil and the second coil, and the first coil is connected in series on bus, the
The first end of two coil is connect with microprocessor, and the second end ground connection of the second coil, the second coil is in parallel with 3rd resistor R3 to be connected
It connects；The current transducer TA includes tertiary coil and the 4th coil, and the first end of tertiary coil is connect with microprocessor, third
The second end of circle is grounded, and 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 is able to detect bus electricity
It presses and the bus voltage signal that will test is delivered to core processing unit, the current transducer TA is able to detect contactor
The running current and contactor running current signal that will test is delivered to core processing unit, core processing unit is according to bus
Voltage signal and contactor running current signal calculate 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
Power supply DC2, first to third transistor, the 4th to the 6th diode and first are changed to third constant-current control circuit, the first direct current
Converting power source DC1, the second DC transformating power DC2 input terminal connect respectively with the cathode of first diode D1, the first direct current
The output end of converting power source DC1 is connect with the collection of the collector of the first triode TQ1, the second triode TQ2 respectively, the second direct current
The output end of converting power source DC2 is connect with the collector of third transistor TQ3, first to third transistor base stage respectively with core
Heart processing unit is electrically connected, and the emitter of the first triode TQ1 is connect with the input terminal of the first constant-current control circuit, and first is permanent
The output end of flow control circuit is connect with the anode of the 6th diode D6, the emitter of the second triode TQ2 and the second constant current control
The input terminal of circuit processed connects, and the output end of the second constant-current control circuit is connect with the anode of the 5th diode D5, the three or three pole
The emitter of pipe TQ3 is connect with the input terminal of third constant-current control circuit, the output end of third constant-current control circuit and the four or two
The anode of pole pipe D4 connects, and the cathode of the 4th to the 6th diode is connected with each other.
In the current source output control unit 2,15V direct current can be converted by the first DC transformating power DC1
15V direct current can be converted into 12V DC electricity Uc=12V, institute by 24V direct current 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
The constant direct current for 200mA of electric current out, the third constant-current control circuit can constant output current be 400mA direct current
Electricity.
In specific application, first to third transistor state is denoted as TQn, when TQn takes following values, first to
The size of current of the direct current of the folding condition and output of third transistor is as shown in the table:
In the present invention, it includes EMC inhibition and anti-jamming circuit, first that the alternating current-direct current switching and EMC, which inhibit unit 4,
Effect pipe SQ1, the second field-effect tube SQ2, the first relay and third 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 connect with core processing unit, the second end of the 5th coil
Ground connection, the 5th coil are connected in parallel with the 5th resistance R5；The first output end and the 4th coil of EMC inhibition and anti-jamming circuit
First end connection, the second end of the 4th coil connect with the first end of the first terminals of full-wave rectification bridge, first switch DLJ respectively
It connects, the second end of first switch DLJ connects with the second terminals of the second terminals of full-wave rectification bridge, contactor coil respectively
It connects, the drain electrode of the first field-effect tube SQ1 and the third terminals of full-wave rectification bridge connect, the source of the first field-effect tube SQ1
The connection of first terminals of pole and contactor coil, the grid of the first field-effect tube SQ1 are connect with core processing unit；Contactor
Second terminals of coil are connect with the cathode of third diode D3, the anode of third diode D3 and the second field-effect tube SQ2
The connection of source electrode pole, the grid of the second field-effect tube SQ2 connect with core processing unit, the drain electrode of the second field-effect tube SQ2 and
The cathode of 4th diode connects.
When busbar voltage occurs to shake point, it is disconnected that core processing unit controls first switch DLJ and the first field-effect tube SQ1
It opens, that is, disconnects power supply of the exchange to contactor coil, then control the second field-effect tube SQ2 conducting, current source output control is single
Member 2 controls first according to the contactor alternating current measured and exports matched electric current to third constant-current control circuit
Constant direct current makes contactor that direct current be kept to be attracted.After busbar voltage restores normal, core processing unit controls second
Effect pipe SQ2 is disconnected, and then controls first switch DLJ and the first field-effect tube SQ1 conducting, the alternating current for the device coil that resumes contacts
Pressure.
The present invention also provides a kind of control methods of current source formula contactor Anti-electricity dazzling device, which is characterized in that
The following steps are included:
A) initialization program；
B) analog acquisition is executed to calculate and energy storage calculating logic；
C it) executes contactor operation identification and exports logic with current source；
D it) executes and shakes point identification and alternating current-direct current switch logic；
E man-machine interaction logic) is executed；
F) it is back to step B).
Wherein, the row analog acquisition calculate with energy storage calculating logic the following steps are included:
A1 collected analogue data) is converted into digital number using the ADC AD conversion unit in core processing unit
According to；
B1 the storage of busbar voltage data, contactor running current data and super capacitor after analog-to-digital conversion) is obtained
It 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 greater than the normal setting value ULHset of voltage, if into next
Step, enters step H1 if not)；
E1) judge whether contactor running current data amplitude IL is greater than electric current and has stream setting value, if entering in next step,
H1 is entered step if not)；
F1) judge whether the amplitude UC of the tank voltage data of super capacitor is greater than tank voltage setting value, if into
In next step, if it is not, entering step H1)；
G1) judge to prepare whether mark is zero, if so, logic terminates, if it is not, setting 1 for mark is prepared, logic terminates；
H1) judge whether switching mark is zero, if so, logic terminates, if it is not, entering in next step；
I1) judge to prepare whether mark sets 1, if so, will prepare flag clear, logic terminates, if it is not, logic terminates.
Contactor operation identification with current source output logic the following steps are included:
A2) judge to prepare whether mark sets 1, if entering step C2), if it is not, entering in 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 control first to third transistor is closed, and logic terminates, if it is not, logic terminates；
C2) judge whether contactor running current data amplitude IL is greater than electric current and has stream setting value, if it is not, logic terminates,
If so, entering in next step；
D2) judge whether running mark is zero, if it is not, logic terminates, if so, entering in next step；
E2) judge whether what is spent when operation acknowledging time counter counts total time is greater than 500ms, if it is not, logic knot
Beam, if so, entering in next step；
F2) running mark sets 1, is closed according to the size of contactor running current data amplitude control first to third transistor
It closes or is connected, logic terminates.
The rolling point identification includes following steps with alternating current-direct current switch logic:
A3) judge to prepare whether mark sets 1, if entering in next step, logic terminates if not；
B3) judge whether running mark sets 1, if entering in next step, logic terminates if not；
C3) judge whether switching mark is zero, if entering in next step, enter step F3 if not)；
D3) judge whether busbar voltage data amplitude UL is less than the normal setting value of voltage or busbar voltage data amplitude is
No mutation reduces by 20% busbar voltage rated value, if entering in next step, logic terminates if not；
E3) control first switch DLJ is disconnected, and the first field-effect tube SQ1 is closed, after the time value 200us of delay to setting
The second field-effect tube SQ2 conducting is controlled, point counter O reset is shaken, switching mark sets 1, and logic terminates；
Whether F3) judge to spend when rolling point delay counter counts is greater than a rolling point time setting value total time, if so, mentioning
Show that the warning of system cut-off signal is output to man-machine interaction unit, enter step H3)；Enter if not in next step；
G3) judge whether the amplitude UL of busbar voltage data is greater than busbar voltage normal value, if it is not, logic terminates, if so,
Prompt shakes electric signal warning and is output to man-machine interaction unit, into next step；
H3 it) disconnects the second field-effect tube SQ2 and controls the first field-effect tube SQ1 closure after being delayed to the time value of setting,
It is closed first switch DLJ, switching mark is reset, prepares flag clear, running mark is reset, and logic terminates.
In the present invention, come pair by acquiring busbar voltage AUL, contactor running current AIL and super-capacitor voltage AUC
Contactor operating status and super capacitor energy-storage situation are judged.Control logic calculates separately out mother by ADC digital-to-analogue conversion
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 greater than busbar voltage normal voltage setting value ULHset, and contactor running current is greater than certain electric current threshold and sets
After ILHset, super capacitor energy-storage voltage UC are greater than tri- conditions of tank voltage setting value UCHset while meeting, contactor fortune
The preparation mark ChargeFlag of row identification and current source output logic, rolling point identification and the two logics of alternating current-direct current switch logic
1 can be just set, two logics just will do it subsequent judgement, otherwise will not enter decision logic.When being collected in ready logic not
When meeting condition, if it find that device is starting to switch over (contactor coil be in current source maintain in the case where),
It will not will then prepare to indicate ChargeFlag clear 0.
Contactor running current amplitude IL sets ILHset greater than certain electric current threshold when contactor is run, reliable to guarantee
Ground confirmation contactor has been stabilized operation, and runing time confirms that counter counts total time greater than after 500ms, and contactor is run
Mark JCQrunFlag can just be set to 1.After contactor running mark is set, control logic start calculate control first to
Third constant-current control circuit should export great DC current and match substantially with alternating current.When contactor electric current is in 100mA
When following, output 100mA direct current is directly controlled, when the running current of contactor is greater than 700mA, control output 700mA is straight
Galvanic electricity.When between the two, need to calculate output electric current, to improve reliability, using the control to round up
Mode carries out control output to first to third constant-current control circuit.
The identification for shaking electricity is that operation contactor running mark JCQrunFlag is 1 in contactor, and super capacitor is
It is 1 that energy storage and voltage normally prepare mark ChargeFlag afterwards, and judging that bus voltage amplitude UL is mutated suddenly reduces 20%Ue
Or it is slowly decreased to contactor release voltage Ulset, at this time if control logic cuts off alternating voltage, supply DC voltage contact
Device can discharge.Control logic is first turned off alternating current, opens DLJ and shutdown SQ1, to guarantee that SQ1 and DLJ is reliably disconnected, passes through
SQ2 is connected after crossing a 200us delay.Contactor coil after conducting SQ2 at this time is defeated to third constant-current control circuit by first
Electric current out provides actuation, and first to the third constant-current control circuit size of current provided and contactor are in Alternating Current Power Supply
Exchange size matches substantially, can satisfy contactor and is reliably attracted.When alternating voltage restores normal (being greater than ULHset) or straight
The time (Thset) that stream is kept arrives, and control logic will turn off SQ2, connects exchange (conducting SQ1 after cutting off 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 conclusion the present invention can record and save AC current values of the contactor in normal be attracted, in system voltage
When occurring to shake electricity, device rapidly cuts off contactor AC power source after judging system rolling electricity by control method, by contactor
Be switched to DC source power supply circuit, this DC source supply current can software it is adjustable, output electric current and device record alternating current
Match.It ensure that contactor is reliably attracted when generating system shakes electricity, be switched to friendship again after system power supply restores normal
Galvanic electricity source.The device and its control method, it is entirely avoided using voltage existing for direct voltage output mode and contactor line
It is difficult to problem existing for circle resistance, it is not necessary that the problems such as whether output direct current matches with contactor be concerned about.Enormously simplify anti-shake
The debugging difficulty of electric installation, also avoid due to parameter setting mismatch, caused by rolling electricity cannot maintain contactor be attracted or damage
The problems such as evil Anti-electricity dazzling device.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (7)
1. a kind of current source formula contactor Anti-electricity dazzling device, is used cooperatively with contactor, characterized in that it comprises:
For providing electric energy and storing the power supply and energy storage control and measuring unit of electric energy；
For controlling the current source output control unit for the DC current that output and contactor match；
For monitoring the busbar voltage and contactor current measuring unit of the working current value of bus voltage value and contactor；
The alternating current-direct current of power supply for switching contactor coil switches and EMC inhibits unit；
For manually-operated man-machine interaction unit；
For controlling the core processing unit of whole device operation；
The core processing unit respectively with the power supply and energy storage control and measuring unit, current source output control unit, mother
Line voltage and contactor current measuring unit, alternating current-direct current switching and EMC inhibit unit and man-machine interaction unit to be electrically connected；
The core processing unit includes microprocessor and its peripheral circuit；
The power supply and energy storage control and measuring unit include AC/DC power module, super capacitor fast charging circuit, super electricity
Hold and DC/DC power module；The input terminal of the AC/DC power module accesses alternating current, the output end of the AC/DC power module
It is connect with the anode of first diode, the cathode of first diode is fast with the cathode of the second diode, the super capacitor respectively
The input terminal of the input terminal of fast charging circuit and the DC/DC power module connection, the output end of the DC/DC power module and
The ground terminal of the DC/DC power module is electrically connected with the core processing unit respectively, the super capacitor fast charging
The output end of circuit is connect with the anode of the second diode, and the of the output end of super capacitor fast charging circuit and first resistor
One end connection, is connected with second resistance between the second end of first resistor and the ground terminal of super capacitor fast charging circuit, the
The second end of one resistance is also electrically connected with the core processing unit；The output end of super capacitor fast charging circuit with it is super
The super capacitor is also connected between the ground terminal of capacitor fast charging circuit, the super capacitor includes being sequentially connected in series
The first to the 7th super capacitor, wherein the anode of the first super capacitor connects with the output end of super capacitor fast charging circuit
It connects, the cathode of the 7th super capacitor is connect with the ground terminal of super capacitor fast charging circuit, the super capacitor fast charging
The ground terminal of circuit is connect with the ground terminal of AC/DC power module, the ground terminal of the super capacitor fast charging circuit with connect
Fuse is connected between first terminals of tentaculum coil.
2. current source formula contactor Anti-electricity dazzling device as described in claim 1, which is characterized in that the busbar voltage with contact
Device current measuring unit includes voltage transmitter and current transducer, and the voltage transmitter includes first coil and the second line
Circle, the first coil are connected in series on bus, and the first end of the second coil is connect with microprocessor, and the second of the second coil
End ground connection, the second coil are connected in parallel with 3rd resistor；The current transducer includes tertiary coil and the 4th coil, third line
The first end of circle is connect with microprocessor, and the second end ground connection of third circle, tertiary coil is connect with the 4th resistor coupled in parallel.
3. current source formula contactor Anti-electricity dazzling device as claimed in claim 2, which is characterized in that the current source output control
Unit include the first DC transformating power, the second DC transformating power, first to third transistor, the 4th to the 6th diode and
First to third constant-current control circuit, the first DC transformating power, the second DC transformating power input terminal respectively with the one or two
The cathode of pole pipe connects, the output end of the first DC transformating power respectively with the collector of the first triode, the second triode
Collection connection, the output end of the second DC transformating power and the collector of third transistor connect, first to third transistor base
Pole is electrically connected with core processing unit respectively, and the input terminal of the emitter of the first triode and the first constant-current control circuit connects
It connects, the output end of the first constant-current control circuit is connect with the anode of the 6th diode, the emitter of the second triode and the second perseverance
The input terminal of flow control circuit connects, and the output end of the second constant-current control circuit is connect with the anode of the 5th diode, and the three or three
The emitter of pole pipe is connect with the input terminal of third constant-current control circuit, the output end of third constant-current control circuit and the four or two pole
The anode of pipe connects, and the cathode of the 4th to the 6th diode is connected with each other.
4. current source formula contactor Anti-electricity dazzling device as claimed in claim 3, which is characterized in that alternating current-direct current switching and
It includes EMC inhibition and anti-jamming circuit, the first field-effect tube, the second field-effect tube, the first relay and third that EMC, which inhibits unit,
Diode and full-wave rectification bridge, first relay include the 5th coil and first switch, the first end and core of the 5th coil
The connection of heart processing unit, the second end ground connection of the 5th coil, the 5th coil are connect with the 5th resistor coupled in parallel；EMC inhibits and resists dry
The first output end for disturbing circuit is connect with the first end of the 4th coil, the second end of the 4th coil respectively with full-wave rectification bridge
One terminals, first switch first end connection, the second end of first switch respectively with the second terminals of full-wave rectification bridge, connect
Second terminals of tentaculum coil connect, and the drain electrode of first field-effect tube and the third terminals of full-wave rectification bridge connect,
The source electrode of first field-effect tube and the first terminals of contactor coil connect, the grid and core processing list of the first field-effect tube
Member connection；Second terminals of contactor coil are connect with the cathode of third diode, the anode of third diode and second
The source electrode pole of effect pipe connects, and the grid of the second field-effect tube is connect with core processing unit, the drain electrode of the second field-effect tube and
The cathode of 4th diode connects.
5. a kind of control method of the current source formula contactor Anti-electricity dazzling device as described in Claims 1-4 is any, feature exist
In, comprising the following steps:
A) initialization program；
B) analog acquisition is executed to calculate and energy storage calculating logic；
C it) executes contactor operation identification and exports logic with current source；
D it) executes and shakes point identification and alternating current-direct current switch logic；
E man-machine interaction logic) is executed；
F) it is back to step B)；
The row analog acquisition calculate with energy storage calculating logic the following steps are included:
A1 collected analogue data) is converted into numerical data using the ADC AD conversion unit 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 greater than the normal setting value of voltage, if entering in next step, enter step if not
Rapid H1)；
E1) judge whether contactor running current data amplitude is greater than electric current and has stream setting value, if enter in next step, if not into
Enter step H1)；
F1) judge whether the amplitude of the tank voltage data of super capacitor is greater than tank voltage setting value, if entering in next step,
If it is not, entering step H1)；
G1) judge to prepare whether mark is zero, if so, logic terminates, if it is not, setting 1 for mark is prepared, logic terminates；
H1) judge whether switching mark is zero, if so, logic terminates, if it is not, entering in next step；
I1) judge to prepare whether mark sets 1, if so, will prepare flag clear, logic terminates, if it is not, logic terminates.
6. a kind of control method of current source formula contactor Anti-electricity dazzling device as claimed in claim 5, which is characterized in that described to connect
Tentaculum operation identification with current source output logic the following steps are included:
A2) judge to prepare whether mark sets 1, if entering step C2), if it is not, entering in 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 control first to third transistor is closed, and logic terminates, if it is not, logic terminates；
C2) judge whether contactor running current data amplitude is greater than electric current and has stream setting value, if it is not, logic terminates, if so, into
Enter in next step；
D2) judge whether running mark is zero, if it is not, logic terminates, if so, entering in next step；
E2) judge whether what is spent when operation acknowledging time counter counts total time is greater than 500ms, if it is not, logic terminates, if
It is, into next step；
F2) running mark sets 1, according to the size of contactor running current data amplitude control first to third transistor close or
Conducting, logic terminate.
7. a kind of control method of current source formula contactor Anti-electricity dazzling device as claimed in claim 6, which is characterized in that the rolling
Point identification includes following steps with alternating current-direct current switch logic:
A3) judge to prepare whether mark sets 1, if entering in next step, logic terminates if not；
B3) judge whether running mark sets 1, if entering in next step, logic terminates if not；
C3) judge whether switching mark is zero, if entering in next step, enter step F3 if not)；
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 entering in next step, logic terminates if not；
E3) control first switch disconnects, and the first field-effect tube disconnects, and controls the second field-effect tube after the time value of delay to setting
Point counter O reset is shaken in conducting, and switching mark sets 1, and logic terminates；
Whether F3) judge to spend when rolling point delay counter counts is greater than a rolling point time setting value total time, if so, prompting system
System power-off signal warning is output to man-machine interaction unit, enters step H3)；Enter if not in next step；
G3) judge whether the amplitude of busbar voltage data is greater than busbar voltage normal value, if it is not, logic terminates, if so, prompt is shaken
Electric signal warning is output to man-machine interaction unit, into next step；
H3 it) disconnects the second field-effect tube and controls the first field-effect tube closure after being delayed to the time value of setting, closure first is opened
It closes, switching mark is reset, prepare flag clear, running mark is reset, and logic terminates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611046775.8A CN107068488B (en) | 2016-11-23 | 2016-11-23 | Current source formula contactor Anti-electricity dazzling device and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611046775.8A CN107068488B (en) | 2016-11-23 | 2016-11-23 | Current source formula contactor Anti-electricity dazzling device and its control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107068488A CN107068488A (en) | 2017-08-18 |
| CN107068488B true CN107068488B (en) | 2019-07-30 |
Family
ID=59619278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611046775.8A Active CN107068488B (en) | 2016-11-23 | 2016-11-23 | Current source formula contactor Anti-electricity dazzling device and its control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107068488B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834565B (en) * | 2017-11-10 | 2023-11-24 | 江苏国网自控科技股份有限公司 | Intelligent control power supply anti-interference device and control method thereof |
| CN108388189A (en) * | 2018-05-03 | 2018-08-10 | 广东新宝电器股份有限公司 | Control method and control circuit of food processor and food processor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2733573Y (en) * | 2004-06-15 | 2005-10-12 | 梁武兴 | Anti-flashover AC contactor |
| CN204031039U (en) * | 2014-04-01 | 2014-12-17 | 西安润辉科技发展有限公司 | A kind of voltage shock avoiding motor intelligent manager |
| CN104935077A (en) * | 2015-05-08 | 2015-09-23 | 江苏国网自控科技股份有限公司 | Anti-interference electricity device for series capacitance type AC contactor and control method thereof |
| CN206331972U (en) * | 2016-11-23 | 2017-07-14 | 江苏国网自控科技股份有限公司 | New type of current source formula contactor Anti-electricity dazzling device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100079923A1 (en) * | 2008-09-30 | 2010-04-01 | General Electric Company | Multi-function circuit interruption accessory |
-
2016
- 2016-11-23 CN CN201611046775.8A patent/CN107068488B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2733573Y (en) * | 2004-06-15 | 2005-10-12 | 梁武兴 | Anti-flashover AC contactor |
| CN204031039U (en) * | 2014-04-01 | 2014-12-17 | 西安润辉科技发展有限公司 | A kind of voltage shock avoiding motor intelligent manager |
| CN104935077A (en) * | 2015-05-08 | 2015-09-23 | 江苏国网自控科技股份有限公司 | Anti-interference electricity device for series capacitance type AC contactor and control method thereof |
| CN206331972U (en) * | 2016-11-23 | 2017-07-14 | 江苏国网自控科技股份有限公司 | New type of current source formula contactor Anti-electricity dazzling device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107068488A (en) | 2017-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103916053B (en) | Motor restarting controller | |
| CN104935077B (en) | For the Anti-electricity dazzling device and its control method of series capacitance type A.C. contactor | |
| CN107895931A (en) | A kind of no-voltage opens the switch implementation method closed with zero current | |
| CN107068488B (en) | Current source formula contactor Anti-electricity dazzling device and its control method | |
| CN105553061A (en) | DC charging pile control system | |
| CN205231713U (en) | Novel low -tension motor protection and electric -dazzling prevention device | |
| CN203101516U (en) | Automatic monitoring device for motor insulation | |
| CN201966862U (en) | Excitation control device of minitype generator based on singlechip | |
| CN103984281A (en) | Permanent magnet switch controller and method based on IGBT and programmable logic technology | |
| CN209642391U (en) | Power-supplying circuit and communication base station | |
| CN204012658U (en) | Distribution transformer broken neutral line protective device | |
| CN206331972U (en) | New type of current source formula contactor Anti-electricity dazzling device | |
| CN103762544B (en) | Automatic switching-on controller | |
| CN108418275A (en) | A kind of energy storage device | |
| CN204928360U (en) | A prevent shaking electric installation for series capacitance formula ac contactor | |
| CN210167803U (en) | Voltage sag protector for contactor | |
| CN209250221U (en) | Low load current automatic detection's earth-leakage protector | |
| CN208337190U (en) | A kind of energy storage device | |
| CN203800558U (en) | Automatic switch-on controller | |
| CN205355901U (en) | Direct current fills electric pile control system | |
| CN208433794U (en) | A kind of power supply system of baking oven, warning device and warning device | |
| CN203415990U (en) | 1140V special intelligent control cabinet | |
| CN102768923A (en) | Undervoltage tripper and working method thereof | |
| CN203406685U (en) | Remote control device of direct current system | |
| CN109599831A (en) | Low load current automatic detection's earth-leakage protector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |