CN103926854B - Contactor control method and contactor combination circuit control method - Google Patents
Contactor control method and contactor combination circuit control method Download PDFInfo
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- CN103926854B CN103926854B CN201410162940.0A CN201410162940A CN103926854B CN 103926854 B CN103926854 B CN 103926854B CN 201410162940 A CN201410162940 A CN 201410162940A CN 103926854 B CN103926854 B CN 103926854B
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Abstract
The invention discloses a contactor control method and a contactor combination circuit control method. The contactor control method comprises the steps of calculating the absolute value of voltage difference according to the obtained voltages of the two ends of a contact point of a contactor, comparing the absolute value of the voltage difference with a preset voltage difference threshold value to generate voltage difference state signals according to the comparison result, generating state transfer instructions according to the voltage difference state signals, the obtained on-off instructions of the contactor and the obtained fault signals of the contactor, generating control signals and state information in the next moment according to a corresponding state control model based on the voltage difference state signals, the state transfer instructions, the obtained state information of the contactor in the moment and the obtained state information of the contactor in the former moment, outputting the control signals, and respectively using the state information of the contactor in the current moment and the state information of the contactor in the next moment to update the state information of the contactor in the former moment and the state information of the contactor in the current moment. The contactor control method avoids using an auxiliary contact point of the contactor to feed back states, so that the control reliability of the contactor is improved.
Description
Technical field
The present invention relates to automatic control technology field, specifically, is related to a kind of catalyst control method and catalyst group
Close circuit control method.
Background technology
Used as the opening and closing of control device of electric power, catalyst has in electrical control widely to be applied.In height
In the environment of safety requirements, the physical isolation characteristic that catalyst is switched with it is seized of special status.
Existing catalyst generally has two groups of contacts, and wherein main contacts is used to be opened or closed circuit, and auxiliary contact are used
To carry out feedback of status.Main contacts is generally normally opened contact, and auxiliary contact often have two to touching with normally opened or normally closed function
Point.
Now widely used general D.C. contactor is generally included：Electromagnetic system, contact system, arc quenching system and other
Part.
Electromagnetic system is the important component part of D.C. contactor, mainly includes solenoid and iron core.D.C. contactor
Exactly using electromagnetic system come the disconnection with movable contact and closure.Contact system includes main contacts and auxiliary contact, contact system
It is the executable portion of catalyst.The effect of main contacts is to turn on and disconnects major loop, to control major loop in larger electric current lead
On-off is opened.And auxiliary contact are arranged in control loop, for meeting the requirement of various control modes.
The electric arc that arc quenching system is used to be produced when ensureing that contact is opened or closed can reliably extinguish, so as to reduce electric arc
Damage to contact.In order to extinguish the electric arc produced when contact is opened or closed rapidly, usual arc quenching system also goes out including strong magnetic
Arc loop.
Additionally, D.C. contactor generally also includes the other parts such as insulation crust, spring, short-circuited conducting sleeve, drive mechanism.
When the coil electricity of D.C. contactor, the static iron core in electromagnetic system produces electromagnetic attraction, by dynamic iron core adhesive.
Because contact system is and dynamic iron core linkage, therefore dynamic iron core band movable contact spring is moved simultaneously, main contacts closure, so as to electric conduction
Source.When the coil is de-energized, suction disappears, and dynamic iron core linkage part is separated by the counteracting force of spring, disconnects main contacts,
So as to cut off the electricity supply.
Fig. 1 shows the circuit diagram of existing D.C. contactor control and auxiliary contact feedback circuit.
As shown in figure 1, existing D.C. contactor 101 includes 2 pairs of contacts, wherein a pair of contact J1 is used as main contacts,
For realizing disconnection and the closure function of D.C. contactor.Used as auxiliary contact, its one end connects second couple of contact J2 with direct current
The positive pole connection of working power VCC of tentaculum 101, the other end is connected with the status signal input interface of drive control plate 102.Directly
One end of coil L1 of stream catalyst 101 be connected with the positive pole of working power VCC of D.C. contactor 101, the other end and driving
The control signal output interface connection of panel 102.
When drive control plate 102 needs to control the closure of D.C. contactor 101, drive control plate 102 passes through control signal
Output interface exports low level control signal K_C so that the coil L1 two ends of D.C. contactor 101 are applied in running voltage.
Now, coil L1 flows through operating current, and then causes a pair of contact J1 and second couple of contact J2 to distinguish adhesive.
The adhesive of a pair of contact J1 causes D.C. contactor to realize closure function, the residing circuit loop of conducting.Second pair
Contact J2 adhesives cause the status signal input interface of drive control plate 102 to connect with working power VCC, i.e. D.C. contactor
101 status feedback signals to the feedback representation second of drive control plate 102 to the high level of contact adhesive.
When drive control plate 102 needs to control the disconnection of D.C. contactor 101, drive control plate 102 passes through control signal
Output interface exports control signal K_C of high level so that the voltage at the coil L1 two ends of D.C. contactor 101 is less than work electricity
Pressure (voltage at normal conditions lower coil L1 two ends is zero).Now, the electric current that coil L1 flows through is less than operating current so that first
Cannot adhesive to contact J1 and second couple of contact J2.
A pair of contact J1 disconnects and causes D.C. contactor to realize break function, disconnects residing circuit loop.Second pair
The connection that contact J2 is disconnected between the status signal input interface and working power VCC that cause drive control plate 102 disconnects, i.e., directly
The low level state feedback signal that stream catalyst 101 disconnects to the feedback representation second of drive control plate 102 to contact.
If the on off operating mode of D.C. contactor normal work, a pair of contact J1 and second couple of contact J2 should be identical,
So representing the status feedback signal of second pair of contact on off operating mode can also be considered as the shape for representing a pair of contact on off operating mode
State feedback signal.By judging control signal just may determine that D.C. contactor 101 with whether status feedback signal matches
Whether working condition is normal, to improve the reliability of D.C. contactor and its residing system.
Existing catalyst control method is that the closure or off-state of main contacts are fed back using auxiliary contact, and it passes through
After the level signal for being opened or closed is exported to solenoid, detect the level of auxiliary contact judging auxiliary contact
Closure or off-state, and then judge whether main contacts and the work of whole circuit are normal.
However, existing catalyst generally only focuses on the reliability and its safeguard measure of catalyst main contacts, and to auxiliary
Reliability of contact does not have strict restriction so that the fault rate of auxiliary contact is apparently higher than main contacts.This resulted in because with
System failure rate is accordingly too high caused by the auxiliary contact fault rate of feedback is too high.
Based on above-mentioned situation, a kind of control method of D.C. contactor is needed badly, to ensure that the reliability to catalyst is controlled, drop
The fault rate of low catalyst and system.
The content of the invention
To solve the above problems, the invention provides a kind of catalyst control method, the method comprising the steps of：
According to the voltage at the contacts of contactor two ends for obtaining, the absolute value of voltage difference is calculated；
The absolute value of the voltage difference is compared with predeterminated voltage difference limen value, corresponding pressure is produced according to comparative result
Difference status signal；
According to the pressure differential condition signal and the catalyst break-make for obtaining instruction, fault-signal, state transfer instruction is produced；
Based on the pressure differential condition signal, state transfer instruction, and the status information at the catalyst current time for obtaining
With the status information of previous moment, the status information of control signal and subsequent time is produced according to corresponding state Controlling model,
And the control signal is exported, to control the break-make of the catalyst；
It is utilized respectively the previous moment at the current time of catalyst and the state information updating catalyst of subsequent time and works as
The status information at front moment.
According to one embodiment of present invention, the status information includes closure state, off-state and malfunction, institute
Stating fault-signal includes disconnecting fault-signal and closure fault-signal, and the catalyst break-make instruction includes catalyst turn-on command
With catalyst open command.
According to one embodiment of present invention,
When the absolute value of the voltage difference is more than predeterminated voltage difference limen value, High Pressure Difference status signal is produced, otherwise produced
Low voltage difference status signal.
According to one embodiment of present invention,
When catalyst break-make instruction for catalyst turn-on command and the fault-signal show catalyst fault-free,
And the pressure differential condition signal be low voltage difference status signal when, produce closure state transfer instruction so that catalyst subsequent time
Status information be changed into closure state；Off-state transfer instruction is otherwise produced, so that the status information of catalyst subsequent time
Go off state.
According to one embodiment of present invention,
When the status information at catalyst current time is off-state：
If state transfer instruction is closure state transfer instruction, by the status information of catalyst subsequent time by disconnecting
State is changed into closure state；
If state transfer instruction is off-state transfer instruction, and off-state timer expired, then by under catalyst
The status information at one moment is changed into malfunction from off-state；
Otherwise the status information of catalyst subsequent time is remained into off-state；
When the status information at catalyst current time is closure state：
If pressure differential condition signal is low voltage difference status signal, and state transfer instruction is off-state transfer instruction, then
The status information of catalyst subsequent time is gone off into state by closure state；
If pressure differential condition signal is High Pressure Difference status signal, by the status information of catalyst subsequent time by closed form
State is changed into malfunction；
Otherwise the status information of catalyst subsequent time is remained into off-state；
When the status information at catalyst current time is malfunction：
If receiving fault recovery instruction and malfunction timer expired, the state of catalyst subsequent time is believed
Breath goes off state by malfunction；
Otherwise the status information of catalyst subsequent time is remained into malfunction.
According to one embodiment of present invention,
If the status information at catalyst current time is off-state, control is produced according to off-state Controlling model
The status information of signal and subsequent time；
If the status information at catalyst current time is closure state, control is produced according to off-state Controlling model
The status information of signal and subsequent time；
If the status information at catalyst current time is malfunction, control is produced according to malfunction Controlling model
The status information of signal and subsequent time.
According to one embodiment of present invention, the shape of control signal and subsequent time is produced according to off-state Controlling model
The step of state information, includes：
The status information of catalyst subsequent time is set to into off-state；
If the status information at a moment is off-state on catalyst, and pressure differential condition signal is High Pressure Difference state letter
Number, then reset off-state timer；
If the status information at a moment is off-state on catalyst, and pressure differential condition signal is low voltage difference state letter
Number, then determine whether whether the state transfer instruction for receiving is closure state transfer instruction, if it is, by under catalyst
The status information at one moment is set to closure state, resets and close off-state timer, if it is not, then according to off-state meter
When device time-out correspondingly arranges the status information of catalyst subsequent time；
If the status information at a moment is closure state on catalyst, output disconnects control signal, and opens disconnection
Status timer.
According to one embodiment of present invention, if off status timer time-out, then by the shape of catalyst subsequent time
State information is set to malfunction, and produces disconnection fault-signal.
According to one embodiment of present invention, the shape of control signal and subsequent time is produced according to closure state Controlling model
The step of state information, includes：
The status information of catalyst subsequent time is set to into closure state；
If the status information at a moment is closure state on catalyst, and pressure differential condition signal is High Pressure Difference state letter
Number, then the status information of catalyst subsequent time is set to into malfunction, and produce closure fault-signal；
If the state at a moment is closure state on catalyst, and pressure differential condition signal is low voltage difference status signal, is sentenced
Whether disconnected state transfer instruction is off-state transfer instruction, if state transfer instruction is off-state transfer instruction, will
The status information of subsequent time catalyst is set to off-state；
If the status information at a moment is not closure state on catalyst, closure control signal is produced and exports, to control
Catalyst closure processed.
According to one embodiment of present invention, the shape of control signal and subsequent time is produced according to malfunction Controlling model
The step of state information, includes：
The status information of catalyst subsequent time is set to into malfunction；
Whether the status information for judging a moment on catalyst is malfunction, if not being malfunction, output is disconnected
Control signal is opened, is disconnected with control contactor, and startup separator status timer, if malfunction, then judge whether to connect
Receive fault recovery to instruct, and whether malfunction timer is overtime；
If receiving fault recovery instruction and malfunction timer expired, reset and closing fault state timing
Device, removes catalyst failure, and the status information of subsequent time is set to into off-state.
Present invention also offers a kind of catalyst combinational circuit control method, the catalyst combinational circuit includes precharge
Catalyst and functional contact device, it is characterised in that the catalyst combinational circuit control method is comprised the following steps：
According to the voltage at functional contact device contact two ends, the absolute value of the voltage difference at evaluation work contacts of contactor two ends；
The absolute value of the voltage difference is compared with predeterminated voltage difference limen value, corresponding pressure is produced according to comparative result
Difference status signal；
According to the instruction of functional contact device break-make and pressure differential condition signal that receive, pre-charge contactor control is produced and exported
Signal processed, to control the break-make of pre-charge contactor；
Using catalyst method as above, produce and output services catalyst control signal, to control functional contact
The break-make of device.
Compared to existing catalyst control method, the method that the present invention is provided carries out catalyst shape without the need for auxiliary contact
The feedback of state signal, so as to avoid the system failure caused because catalyst auxiliary contact fault rate is too high, improves contact
The reliability of device and catalyst place apparatus and system.The present invention provide catalyst control method during application, both
Can be directly applied in the control to the catalyst with auxiliary contact, it is also possible to apply to not having auxiliary contact to connect
In the control of tentaculum, extensively, availability is strong for use range.
Meanwhile, present invention also offers it is a kind of with precharge D.C. contactor combinational circuit control method, the method lead to
Cross functional contact device is controlled using above-mentioned catalyst control method, improve to whole D.C. contactor combinational circuit
The reliability of control.
Other features and advantages of the present invention will be illustrated in the following description, also, the partly change from description
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by description, rights
Specifically noted structure is realizing and obtain in claim and accompanying drawing.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing wanted needed for technology description to do simple introduction：
Fig. 1 is the circuit diagram of existing catalyst control and auxiliary contact feedback circuit；
Fig. 2 is the circuit diagram of the contactor control circuit that the present invention is used；
Fig. 3 is the control flow chart of catalyst according to an embodiment of the invention；
Fig. 4 is the flow chart of generation pressure differential condition signal according to an embodiment of the invention and state transfer instruction；
Fig. 5 is the overview flow chart for producing simultaneously output control control signal according to an embodiment of the invention；
Fig. 6 is the transition diagram according to catalyst status information in one embodiment of the invention.
Fig. 7 is the catalyst control flow chart based on off-state Controlling model according to an embodiment of the invention；
Fig. 8 is the catalyst control flow chart based on closure state Controlling model according to an embodiment of the invention；
Fig. 9 is the catalyst control flow chart based on malfunction Controlling model according to an embodiment of the invention；
Figure 10 is the circuit structure diagram of existing D.C. contactor combinational circuit；
Figure 11 is the overview flow chart of D.C. contactor combinational circuit control method according to an embodiment of the invention；
Figure 12 is the detail flowchart of D.C. contactor combinational circuit control method according to an embodiment of the invention；
Figure 13 is the control flow chart of pre-charge contactor according to an embodiment of the invention.
Specific embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, how the present invention is applied whereby
Technological means solving technical problem, and reach technique effect realize that process can fully understand and implement according to this.Need explanation
As long as not constituting conflict, each embodiment and each feature in each embodiment in the present invention can be combined with each other,
The technical scheme for being formed is within protection scope of the present invention.
In addition, can be in the department of computer science of such as one group of computer executable instructions the step of the flow process of accompanying drawing is illustrated
Perform in system, and, although show logical order in flow charts, but in some cases, can be with different from herein
Order perform shown or described step.
Embodiment one：
The too high problem of system failure rate is caused for existing D.C. contactor control method, present inventor has performed repeatedly
Experiment, to determine the reason for causing system failure rate too high.
In experiment, the electric machine controller in 30 electric automobiles of a certain batch is monitored, inside the electric machine controller
Containing D.C. contactor circuit.In the process of the test of month by a definite date, the D.C. contactor fault of 6 times is occurred in that.
Jing check analyses, it is found that 5 failures therein are extremely caused because the auxiliary contact in catalyst for feedback effect are glued
, only 1 time failure is due to misoperation so that the main contact in catalyst is unable to what adhesive was caused after being stuck.
Through consulting the product data handbook that analysis catalyst manufacturer provides, it is found that most of manufacturers all pay close attention to
In the reliability and its safeguard measure of catalyst main contacts, and it is relatively low to the reliability index data demand of auxiliary contact or do not have
It is described.Therefore, method of the present invention using avoiding using catalyst auxiliary contact as far as possible, to improve the reliability of catalyst control
Property.
Fig. 2 shows the schematic diagram of contactor control circuit used in the present invention.
As shown in Fig. 2 relative to Fig. 1, the present invention does not use the auxiliary contact J2 of catalyst to feed back main contacts J1's
Status information, but the voltage Udc and Uc at catalyst main contacts J1 two ends are gathered respectively, reflected by voltage Udc and Uc and connect
The state of tentaculum main contacts J1.
When the control D.C. contactor 101 of drive control plate 102 is closed, drive control plate 102 is exported by control signal
Interface exports low level control signal K_C so that the coil L1 two ends of D.C. contactor 101 apply running voltage.Now line
Circle L1 flows through operating current, and then causes the adhesive of a pair of contact J1, and then realizes the closure function of catalyst, so as to turn on
The circuit loop at place.
Drive control plate 102 gathers respectively the voltage Udc and Uc at the main contacts J1 two ends of D.C. contactor 101, if voltage
The absolute value Uk_dif of the voltage difference of Udc and Uc is less than or equal to predetermined voltage threshold, then show the main contacts of D.C. contactor 101
J1 is in closure state.Now, control signal K_C that the absolute value Uk_dif of voltage difference is exported with drive control plate 102 is matched,
D.C. contactor is working properly, and main contacts maintains current state.Otherwise show that D.C. contactor 101 has exception, drive control
The output of plate 102 disconnects control signal so that D.C. contactor 101 disconnects.
When the control D.C. contactor 101 of drive control plate 102 disconnects, drive control plate 102 is exported by control signal
Interface exports control signal K_C of high level so that the voltage that the coil L1 two ends of D.C. contactor 101 apply is less than work electricity
Pressure.Now, the electric current that coil L1 flows through is less than operating current, a pair of contact J1 of D.C. contactor 101 cannot adhesive, and then
The break function of catalyst is realized, residing circuit loop is disconnected.
Drive control plate 102 gathers respectively the voltage Udc and Uc at the main contacts J1 two ends of D.C. contactor 101, if voltage
The absolute value Uk_dif of the voltage difference of Udc and Uc is more than predetermined voltage threshold, then show that the main contacts J1 of D.C. contactor 101 is in
Off-state.Now, control signal K_C that the absolute value Uk_dif of voltage difference is exported with drive control plate 102 is matched, and direct current connects
Tentaculum is working properly, and main contacts maintains current state.Otherwise show that D.C. contactor 101 has exception, drive control plate 102 is carried
Show that D.C. contactor 101 cannot normally disconnect.
Based on above-mentioned principle, the invention provides a kind of catalyst control method, Fig. 3 shows the control in the present embodiment
The flow chart of method.
As shown in figure 3, in the present embodiment, obtain first in step S301 the instruction of catalyst break-make, catalyst it is current
Moment and previous moment status information, the fault-signal of catalyst, the voltage at contacts of contactor two ends.
Subsequently in step s 302 the absolute value of voltage difference is calculated according to the voltage at tentaculum contact two ends.And in step
The absolute value of calculated voltage difference in step S302 is compared with predeterminated voltage difference limen value in S303, according to comparing knot
Fruit produces corresponding pressure differential condition signal.
In step s 304, produce state transfer according to the instruction of catalyst break-make, pressure differential condition signal and fault-signal to refer to
Order.
The status information of status information and previous moment based on catalyst current time, pressure differential condition signal and state turn
Instruction is moved, in step S305, the status information of control signal and subsequent time is produced according to corresponding state Controlling model, and
Output control signal, with the break-make of control contactor.
The state information updating at the last current time and subsequent time in step S306, being utilized respectively catalyst is contacted
The previous moment of device and the status information at current time.
Fig. 4 shows the flow chart that pressure differential condition signal and state transfer instruction are produced in the present embodiment.
As shown in figure 4, in the present embodiment, first in step S401, obtaining catalyst break-make instruction Cmd_Kon.When logical
Severed finger makes Cmd_Kon when being 1, represents and expects catalyst conducting, i.e. catalyst turn-on command；When break-make instruction Cmd_Kon is 0
When, represent and expect that catalyst disconnects, be i.e. catalyst open command.
Need explanation when, the break-make instruction that catalyst break-make instruction Cmd_Kon can be sent by multiple equipment is common certainly
It is fixed.Break-make instruction Slave_Cmd_Kon and the controller of equipment residing for catalyst that equipment for example by residing for catalyst sends
Break-make command M aster_Cmd_Kon for sending determines jointly, only when the break-make instruction that two equipment send is 1, break-make
Instruction Cmd_Kon is just 1, but the invention is not restricted to this.
In step S402, status information K_State at the current time of catalyst and the state letter of previous moment are obtained
Breath K_State_Old, and fault status signal.Wherein, the state confidence of catalyst includes three kinds of states, and it is respectively disconnected
Open state K_State_Off, closure state K_State_On and malfunction K_State_Fault.Fault status signal includes
Catalyst disconnects fault status signal K_Open_Fault and closure fault status signal K_Close_Fault=1.
When catalyst disconnects fault status signal K_Open_Fault=1, represent that catalyst disconnection has failure, it is impossible to
It is normal to disconnect；When catalyst disconnects fault status signal K_Open_Fault=0, represent that catalyst can normally disconnect.When
During catalyst closure fault status signal K_Close_Fault=1, represent that catalyst closure has failure, it is impossible to normally closed；
When catalyst closes fault status signal K_Close_Fault=0, represent that catalyst being capable of normally closed.
As shown in figure 4, the voltage Udc and Uc at probe of contactor two ends is gathered in step S403, and in step s 404
Calculate the absolute value Uk_dif of voltage Udc and voltage Uc differences.
In step S405, judge the absolute value Uk_dif of voltage difference whether more than predeterminated voltage difference limen value.If greater than
Predeterminated voltage difference limen value, then produce the pressure differential condition signal Uk_dif_flag of high level in step S406, will Uk_dif_
Flag is set to 1；If less than or equal to predeterminated voltage difference limen value, then produce low level pressure differential condition signal in step S 407
Uk_dif_flag, will Uk_dif_flag be set to 0.
In the present embodiment, in step S408 according to break-make instruct Cmd_Kon, fault status signal K_Open_Fault and
K_Close_Fault and pressure differential condition signal Uk_dif_flag produces corresponding state transfer signal K_Transfer.If
Meet Cmd_Kon==1, K_Open_Fault==0, K_Close_Fault==0, pressure differential condition signal Uk_dif_ simultaneously
Flag==0, then produce state transfer instruction K_Transfer of high level, i.e. K_Transfer=1 in step S409；It is no
Low level state transfer instruction K_Transfer, i.e. K_Transfer=0 are then produced in step S410.
Fig. 5 shows the overview flow chart that simultaneously output control signal is produced in the present embodiment.
As shown in figure 5, for the different conditions residing for catalyst, using different state Controlling models come control contactor
Break-make.In the present embodiment, functional contact device is judged according to functional contact device current state output signals K_State in step S501
Whether it is off.If functional contact device is off, i.e. K_State==K_State_Off, then step is performed
Rapid S502, to process based on off-state Controlling model corresponding control signal and subsequent time status signal K_ are produced
State_Next, so as to control the break-make of functional contact device.
If functional contact device is not at off-state, i.e. K_State！=K_State_Off, then execution step S503,
To judge functional contact device whether in closure state.If functional contact device is in closure state, i.e. K_State==K_
State_On, then execution step S504 produces corresponding control signal and next to process based on closure state Controlling model
Moment status signal K_State_Next, so as to control the break-make of functional contact device.
If functional contact device is not at closure state, i.e. K_State！=K_State_On, then show functional contact device
In malfunction, now execution step S505, with processed based on failure state model produce corresponding control signal and under
One moment status signal K_State_Next, so as to control the break-make of functional contact device.
As shown in figure 5, in the present embodiment, the catalyst obtained according to corresponding state Controlling model in step S506 is next
Moment status signal K_State_Next updates the status signal of catalyst.Wherein, with before current state output signals K_State renewals
One moment status signal K_State_Old, i.e. K_State_Old=K_State, with subsequent time status signal K_State_
Next updates current state output signals K_State, i.e. K_State=K_State_Next.
In corresponding state Controlling model, expression functional contact device off-state timer K_ can be started in some conditions
Off_Timer or malfunction timer K_Fault_Timer.When functional contact device enters off-state, off-state meter
When device K_Off_Timer start timing；When functional contact device enters malfunction, malfunction timer K_Fault_
Timer starts timing.
So, in the present embodiment, judge whether off-state timer K_Off_Timer has been turned in step s 507.
Have been turned on if off status timer K_Off_Timer, then execution step S508 causes off-state timer K_Off_
Timer timing, now the counting of off-state timer K_Off_Timer can be incremental according to the passage of time；If do not opened
Move, then execution step S511.
During off-state timer K_Off_Timer is counted, can judge to disconnect shape in step S509
Whether state timer K_Off_Timer counts overtime.If counting time-out, status timer K_ is will be switched off in step S510
Off_Timer is set to time-out, and stops counting, subsequent execution step S511.
It is similar with the operating process of off-state timer K_Off_Timer, in step S511, can failure judgement state
Whether timer K_Fault_Timer has been turned on.If malfunction timer K_Fault_Timer has been turned on, step is performed
Rapid S512 causes malfunction timer K_Fault_Timer timing, now the meter of malfunction timer K_Fault_Timer
Number can be incremented by according to the passage of time；If do not started, into next controlling cycle, i.e. return to step S501.
During the timer K_Fault_Timer that nonserviceables is counted, in the present embodiment, in step S513
Whether failure judgement status timer K_Fault_Timerr counts overtime.If counting time-out, by event in step S514
Barrier status timer K_Fault_Timer is set to time-out, and stops counting, and subsequently enters subsequent work catalyst controlling cycle,
That is return to step S501.
Fig. 6 shows the mutual transformation process of catalyst status information in the present embodiment.
As shown in fig. 6, in the present embodiment, the status information of catalyst includes off-state, closure state and malfunction
Three kinds of forms.
When the status information at catalyst current time is off-state：
If state transfer instruction is closure state transfer instruction, by the status information of catalyst subsequent time by disconnecting
State is changed into closure state；
If state transfer instruction is off-state transfer instruction, and off-state timer expired, then by under catalyst
The status information at one moment is changed into malfunction from off-state；
Otherwise the status information of catalyst subsequent time is remained into off-state.
When the status information at catalyst current time is closure state：
If pressure differential condition signal is low voltage difference status signal, and state transfer instruction is off-state transfer instruction, then
The status information of catalyst subsequent time is gone off into state by closure state；
If pressure differential condition signal is High Pressure Difference status signal, by the status information of catalyst subsequent time by closed form
State is changed into malfunction；
Otherwise the status information of catalyst subsequent time is remained into off-state.
When the status information at catalyst current time is malfunction：
If receiving fault recovery instruction and malfunction timer expired, the state of catalyst subsequent time is believed
Breath goes off state by malfunction；
Otherwise the status information of catalyst subsequent time is remained into malfunction.
The transformation process and its principle of catalyst status information are further elaborated below in conjunction with accompanying drawing, with more clear
Chu's ground explanation purpose of the present invention, principle and advantage.
When judging that functional contact device is off, the logical of functional contact device is controlled based on off-state model
Disconnected, Fig. 7 shows the catalyst control flow chart in the present embodiment based on off-state model.
As shown in fig. 7, the present embodiment is in step s 701 first by catalyst subsequent time status signal K_State_
Next is set to off-state, i.e. K_State_Next=K_State_Off.
In step S702, whether catalyst previous moment is judged according to the status information of the catalyst previous moment for obtaining
It is off.If catalyst previous moment is not at off-state, i.e. K_State_Old！=K_State_Off, then
Execution step S703.In step S703, output services catalyst open command K_On=0, so that functional contact device disconnects.
In step S704, determine whether catalyst previous moment whether in closure state.If catalyst is previous
Moment is in closure state, i.e. K_State_Old==K_State_On, then show that catalyst is entered at current time and disconnect shape
State, now execution step S705, initializes and starts off-state timer K_Off_Timer and start counting up, and subsequently performs such as
The subsequent step in functional contact device control flow shown in Fig. 5；If catalyst previous moment is not at closure state, that is, connect
Tentaculum previous moment is in malfunction, then continue executing with the subsequent step in catalyst control flow as shown in Figure 5.
Again as shown in fig. 7, when the status information of the catalyst previous moment according to acquisition judges catalyst previous moment
It is not at off-state, i.e. K_State_Old！During=K_State_Off, the functional contact for collecting is judged in step S706
Whether the absolute value Uk_dif of the voltage difference of the voltage Udc and Uc at device contact two ends is less than or equal to preset pressure threshold value, i.e.,
Whether Uk_dif_flag is equal to zero.
If Uk_dif_flag is equal to zero, state transfer instruction K_ of catalyst is judged in step S707
Whether Transfer is equal to 1.If state transfer instruction K_Transfer is equal to 1, demonstrate the need for closing in catalyst, now
Catalyst subsequent time status signal K_State_Next is set to into closure state, i.e. K_State_Next=in step S708
K_State_On, to cause functional contact device to close in subsequent time, subsequent execution step S711 to reset and closes disconnection shape
State timer K_Off_Timer；If state transfer instruction K_Transfer is not equal to 1, work is judged in step S709
Whether the off-state timer K_State_Off of catalyst is overtime.
It is not timed-out if off status timer K_State_Off, then after showing current state for catalyst disconnection
Time is not long, and the electricity of rear end Support Capacitor C is shorter by discharge resistance discharge time, now performs work as shown in Figure 5
Subsequent step in catalyst control flow, so that Support Capacitor C continues to discharge.If off status timer K_State_
Off is overtime, then show discharge resistance overtime discharge, and the now absolute value of the voltage difference at contacts of contactor two ends under normal circumstances
Uk_dif should be greater than predeterminated voltage difference limen value, it is possible to judging that gluing extremely occurs in the contact of catalyst, it is impossible to normal to disconnect, institute
Contact is characterized catalyst subsequent time status signal K_State_Next is set to into malfunction in step S710, and is exported
Device disconnects the fault status signal for breaking down, i.e. K_State_Next=K_State_Fault, K_Open_Fault=1, with
Execution step S711 afterwards, to reset and closes off-state timer K_Off_Timer, continues thereafter with execution as shown in Figure 5
Subsequent step in functional contact device control flow.
If as shown in fig. 7, Uk_dif_flag！=0, then off-state timer is resetted and closed in step S712
K_Off_Timer.Because for the circuit residing for catalyst, catalyst status feedback signal may also have other purposes, be
Cause the catalyst control method that the present invention is provided that there is good compatibility, in the present embodiment, catalyst control method is also
Including step S713.In step S713, output contactor status feedback signal is continued thereafter with and performs work as shown in Figure 5
Subsequent step in catalyst control flow.
When judging that functional contact device is in closure state, based on the logical of closure state model cootrol functional contact device
Disconnected, Fig. 8 shows the catalyst control flow chart in the present embodiment based on closure state model.
As shown in figure 8, in the present embodiment, by the status signal K_ of catalyst subsequent time first in step S801
State_Next is set to closure state, i.e. K_State_Next=K_State_On.
In step S802, judge that catalyst previous moment is according to the status information of the previous moment of the catalyst for obtaining
It is no in closure state.If catalyst previous moment is not at closure state, i.e. K_State_Old！=K_State_On, then
Execution step S803, output services catalyst close command K_On=1 in step S803, so that functional contact device closure, with
The subsequent step in functional contact device control flow as shown in Figure 5 is continued executing with afterwards.If being in closure state, i.e. K_
State_Old==K_State_On, then the functional contact device contact two ends for determining whether to collect in step S804
Less than or equal to preset pressure threshold value, i.e. Uk_dif_flag etc. whether whether the absolute value Uk_dif of the pressure reduction of voltage Udc and Uc
In zero.
If Uk_dif_flag！=0, then show now functional contact device poor contact of contacts, it is false closure, rear end
Once power cell output, functional contact device is pre- because poor contact of contacts causes the pressure drop at contacts of contactor two ends to exceed
If voltage difference threshold value.Now functional contact device subsequent time status signal K_State_Next is set to into event in step S805
Barrier, and export the fault status signal that the device disconnection of sign functional contact is broken down, i.e. K_State_Next=K_State_
Fault, K_Open_Fault=1, continue thereafter with the subsequent step performed in functional contact device control flow as shown in Figure 5.
If Uk_dif_flag==0, state transfer instruction K_ of functional contact device is judged in step S806
Whether Transfer is equal to zero.If state transfer instruction K_Transfer is equal to zero, demonstrate the need for disconnecting in catalyst, this
When catalyst subsequent time status signal K_State_Next is set to into off-state, i.e. K_State_Next in step S807
=K_State_Off, to cause functional contact device to disconnect in subsequent time, continues thereafter with and performs functional contact as shown in Figure 5
Subsequent step in device control flow；If state transfer instruction K_Transfer is not equal to 0, table is produced in step S808
Status feedback signal K_R, i.e. K_R=1 of the functional contact device in closure state is levied, is continued thereafter with and is performed work as shown in Figure 5
Make the subsequent step in catalyst control flow.
When judging that functional contact device is in malfunction, the logical of functional contact device is controlled based on failure state model
Disconnected, Fig. 9 shows the catalyst control flow chart in the present embodiment based on failure state model.
As shown in figure 9, in the present embodiment, by the status signal K_ of catalyst subsequent time first in step S901
State_Next is set to malfunction, i.e. K_State_Next=K_State_Fault.
In step S902, functional contact device previous moment is judged according to the status information of the catalyst previous moment for obtaining
Whether malfunction is in.If catalyst previous moment is not at malfunction, i.e. K_State_Old！=K_State_
Fault, then execution step S903, with the output contactor open command in step S903, i.e. K_On=0, so that catalyst is disconnected
Open, and initialization and startup separator status timer K_State_Fault, malfunction timer K_ in step S904
State_Fault ensure that catalyst recovers to need to wait the regular hour from failure.Continue thereafter with execution as shown in Figure 5
Functional contact device control flow in subsequent step.
If being in malfunction, i.e. K_State_Old==K_State_Fault, then in step S905 further
Judge whether to receive fault recovery instruction and whether malfunction timer is overtime.If receiving fault recovery instruction and event
Barrier status timer time-out, then be set to disconnection shape in step S906 by catalyst subsequent time status signal K_State_Next
State, i.e. K_State_Next=K_State_Off so that catalyst recovers from failure, subsequent execution step S907；Otherwise after
The continuous subsequent step performed in functional contact device control flow as shown in Figure 5.
Because catalyst subsequent time status signal K_State_Next is set to into off-state in step S906,
Reset in step s 907 and closing fault status timer K_State_Fault, and remove the corresponding failure of catalyst, for example
When catalyst has closure failure so that K_Close_Fault=0, when catalyst is present disconnects failure so that K_
Open_Fault=0.Continue thereafter with the subsequent step performed in catalyst control flow as shown in Figure 5.
Compared to existing catalyst control method, the method that the present invention is provided carries out catalyst shape without the need for auxiliary contact
The feedback of state signal, so as to avoid the system failure caused because catalyst auxiliary contact fault rate is too high, improves contact
The reliability of device and catalyst place apparatus and system.The present invention provide catalyst control method during application, both
Can be directly applied in the control to the catalyst with auxiliary contact, it is also possible to apply to not having auxiliary contact to connect
In the control of tentaculum, extensively, availability is strong for use range.
Embodiment two：
Figure 10 shows the circuit structure diagram of existing D.C. contactor combinational circuit.
As shown in Figure 10, D.C. contactor combinational circuit includes functional contact device 1001, pre-charge contactor 1002, first
Voltage sensor 1003, second voltage sensor 1004, charging resistor R1, discharge resistance R2, power cell 1005 and it is connected in parallel on
The Support Capacitor C1 at the two ends of power cell 1005.
Functional contact device 1001 is connected with power cell 1005, wherein, the input and high-tension electricity of functional contact device 1001
The positive pole connection in source, the outfan of power cell 1005 is connected with the negative pole of high voltage power supply.First voltage sensor 1003 connects
In the positive and negative end of high voltage power supply, for measuring the voltage Udc of the input of functional contact device 1001, second voltage sensor
1004 is in parallel with power cell 1005, and for the voltage Uc that measures the two ends of power cell 1005, (i.e. functional contact device 1001 is exported
The voltage at end).
Pre-charge contactor 102 is in parallel with functional contact device 1001 after connecting with charging resistor R1, wherein, functional contact device
1001 input is connected with the input of pre-charge contactor 1002, outfan and charging resistor R1 of functional contact device 1001
Connection.
Existing D.C. contactor combinational circuit control method is in functional contact device 1001 and pre-charge contactor 1002
During break-make, by judging whether the status signal that catalyst auxiliary contact feed back is matched judging whether two catalysts are deposited respectively
In failure.If there is failure in catalyst, then just disconnect catalyst.It has been noted that because catalyst is auxiliary in embodiment one
Help reliability of contact poor, the error rate of the status signal of its feedback is higher, easily cause catalyst control mistake.So,
The invention allows for a kind of control method of new D.C. contactor combinational circuit, Figure 11 shows that direct current connects in the present embodiment
The FB(flow block) of tentaculum combinational circuit control method.
As shown in figure 11, in the present embodiment, the voltage at collecting work contacts of contactor two ends first in step S1101
Udc and Uc, calculates the absolute value Uk_dif of the voltage difference of voltage Udc and Uc in step S1102.
In step S1103, by the absolute value of the calculated functional contact device contact both end voltage difference of step S1102
Uk_dif is compared with predeterminated voltage difference limen value, and produces corresponding pressure differential condition signal Uk_dif_ according to comparative result
flag_1.In the present embodiment, predeterminated voltage difference limen value is set as 10V, the invention is not restricted to this, in the other embodiment of the present invention
In, predeterminated voltage difference limen value can also be set as other reasonable values.
Subsequently in step S1104, based on the pressure produced in the instruction of functional contact device break-make and step S1103 for receiving
Difference status signal Uk_dif_flag_1 produces corresponding control signal, to control the break-make of pre-charge contactor.
The last pressure in step S1105, based on generation in the instruction of functional contact device break-make and step S1103 for receiving
Difference status signal Uk_dif_flag_1, the catalyst control method illustrated using embodiment one controls the break-make of functional contact device.
Figure 12 shows the detail flowchart of D.C. contactor combinational circuit control method in the present embodiment, wherein being pre-charged
Catalyst 102 employs existing catalyst control method, and functional contact device is employed such as connecing for being illustrated in embodiment one
Tentaculum control method, but the invention is not restricted to this.
As shown in figure 12, the functional contact that basis gets first in step S1201 to step S1207 in the present embodiment
The voltage Udc and Uc at device contact two ends produces corresponding pressure differential condition signal Uk_dif_flag, and its process is illustrated with embodiment one
The step of S501 it is identical to step S507, will not be described here.
In step S1208, Cmd_Kon and the pressure differential condition signal Uk_ for producing are instructed according to functional contact device break-make
Dif_flag controls the break-make of pre-charge contactor, and Figure 13 shows the detail flowchart of the break-make of control pre-charge contactor.
As shown in figure 13, the fault-signal K1_Fault of pre-charge contactor is obtained first in step S1301.If pre-
The fault-signal K1_Fault of charging contactor is low level signal (i.e. K1_Fault==0), then it represents that pre-charge contactor
Fault-free, otherwise represents that pre-charge contactor has failure.
Subsequently the electrical contact of Cmd_Kon, pressure differential condition signal Uk_dif_flag and preliminary filling is instructed according to functional contact device break-make
The fault-signal K1_Fault of device produces corresponding pre-charge contactor control signal K1_On.In the present embodiment, in step
Judge whether in S1302 while meeting Cmd_Kon==1, Uk_dif_flag！=0 and K1_Fault==0.If in satisfaction
State condition, then it represents that the instruction of the functional contact device break-make that receives is turn-on command, and the electricity at functional contact device contact two ends
Pressure is more than predeterminated voltage difference limen value, while pre-charge contactor fault-free, now exports the control of high level in step S1303
Signal K1_On (i.e. K1_On=1), to control pre-charge contactor closure；Low level control is otherwise exported in step S1304
Signal K1_On (i.e. K1_On=0) processed, to control pre-charge contactor disconnection.
In the present embodiment, the break-make of pre-charge contactor is controlled using existing catalyst control method, so passing through
The state of the main contact of pre-charge contactor is feedback signal K1_R that produced by its auxiliary contact reflecting.So,
In step S1305, feedback signal K1_R of pre-charge contactor is detected after time delay preset duration, and judged in step S1306
Whether feedback signal K1_R matches with control signal K1_On.If it does, then by pre-charge contactor in step S1308
Fault-signal K1_Fault is set to low level, and performs the subsequent step shown in Figure 12；If it does not match, in step S1307
It is middle that the fault-signal K1_Fault of pre-charge contactor is set to into high level, represent that pre-charge contactor has failure, with
One controlling cycle produces low level control signal K1_On to disconnect pre-charge contactor, subsequently performs follow-up shown in Figure 12
Step.
Again as shown in figure 12, the break-make of pre-charge contactor is controlled in step S1208, produces corresponding preliminary filling
Electric contactor control signal K1_On subsequently instructs Cmd_ controlling the break-make of pre-charge contactor according to functional contact device break-make
Kon, functional contact device fault-signal and pressure differential condition signal Uk_dif_flag produce corresponding state transfer instruction K_
Transfer, its process is identical to step S510 with S508 the step of elaboration in embodiment one, will not be described here.
Subsequently the catalyst control method using the elaboration in embodiment one in step S1212 controls functional contact device
Break-make, will not be described here.
The control method of the D.C. contactor combinational circuit that the present invention is provided not only realizes all of existing control method
Function, also by the reliability for cancelling the feedback signal of functional contact device auxiliary contact generation to improve combinational circuit control, together
When corresponding error protection can also be identified and provided to the failure of functional contact device.
Although disclosed herein embodiment as above, described content is only to facilitate understanding the present invention and adopting
Embodiment, is not limited to the present invention.Technical staff in any the technical field of the invention, without departing from this
On the premise of the disclosed spirit and scope of invention, any modification and change can be made in the formal and details implemented,
But the scope of patent protection of the present invention, still must be defined by the scope of which is defined in the appended claims.
Claims (14)
1. a kind of catalyst control method, it is characterised in that the method comprising the steps of：
Obtain status information, the fault-signal of catalyst of the instruction of catalyst break-make, the current time of catalyst and previous moment；
According to the voltage at the contacts of contactor two ends for obtaining, the absolute value of its voltage difference is calculated；
The absolute value of the voltage difference is compared with predeterminated voltage difference limen value, and corresponding pressure reduction is produced according to comparative result
Status signal；
State transfer instruction is produced according to catalyst break-make instruction, pressure differential condition signal and fault-signal；
The transfer of the status information of status information and previous moment based on catalyst current time, pressure differential condition signal and state refers to
Order, according to corresponding state Controlling model the status information of control signal and subsequent time is produced, and exports the control signal,
To control the break-make of the catalyst；
Be utilized respectively the previous moment of the current time of catalyst and the state information updating catalyst of subsequent time and it is current when
The status information at quarter.
2. the method for claim 1, it is characterised in that the status information include closure state, off-state and therefore
Barrier state, the fault-signal includes disconnecting fault-signal and closure fault-signal, and the catalyst break-make instruction includes contact
Device turn-on command and catalyst open command.
3. method as claimed in claim 1 or 2, it is characterised in that
When the absolute value of the voltage difference is more than predeterminated voltage difference limen value, High Pressure Difference status signal is produced, otherwise produce low pressure
Difference status signal.
4. method as claimed in claim 3, it is characterised in that
When get the instruction of catalyst break-make for catalyst turn-on command and the fault-signal show catalyst fault-free and
When the pressure differential condition signal is low voltage difference status signal, closure state transfer instruction is produced, so that catalyst subsequent time
Status information is changed into closure state；Off-state transfer instruction is otherwise produced, so that the status information of catalyst subsequent time becomes
For off-state.
5. method as claimed in claim 4, it is characterised in that
When the status information at catalyst current time is off-state：
If state transfer instruction is closure state transfer instruction, by the status information of catalyst subsequent time by off-state
It is changed into closure state；
If state transfer instruction is off-state transfer instruction, and off-state timer expired, then by a period of time under catalyst
The status information at quarter is changed into malfunction from off-state；
Otherwise the status information of catalyst subsequent time is remained into off-state；
When the status information at catalyst current time is closure state：
If pressure differential condition signal is low voltage difference status signal, and state transfer instruction is off-state transfer instruction, then will connect
The status information of tentaculum subsequent time goes off state by closure state；
If pressure differential condition signal is High Pressure Difference status signal, the status information of catalyst subsequent time is become by closure state
For malfunction；
Otherwise the status information of catalyst subsequent time is remained into off-state；
When the status information at catalyst current time is malfunction：
If receiving fault recovery instruction and malfunction timer expired, by the status information of catalyst subsequent time by
Malfunction goes off state；
Otherwise the status information of catalyst subsequent time is remained into malfunction.
6. the method as described in claim 4 or 5, it is characterised in that
If the status information at catalyst current time is off-state, control signal is produced according to off-state Controlling model
With the status information of subsequent time；
If the status information at catalyst current time is closure state, control signal is produced according to off-state Controlling model
With the status information of subsequent time；
If the status information at catalyst current time is malfunction, control signal is produced according to malfunction Controlling model
With the status information of subsequent time.
7. method as claimed in claim 6, it is characterised in that produced according to off-state Controlling model and output control signal
The step of it is further comprising the steps：
The status information of catalyst subsequent time is set to into off-state；
If the status information at a moment is off-state on catalyst, and pressure differential condition signal is High Pressure Difference status signal, then
Reset off-state timer；
If the status information at a moment is off-state on catalyst, and pressure differential condition signal is low voltage difference status signal, then
Determine whether whether the state transfer instruction for receiving is closure state transfer instruction, if it is, by under catalyst for the moment
The status information at quarter is set to closure state, resets and close off-state timer, if it is not, then according to off-state timer
Time-out correspondingly arranges the status information of catalyst subsequent time；
If the status information at a moment is closure state on catalyst, output disconnects control signal, and opens off-state
Timer.
8. method as claimed in claim 6, it is characterised in that if off status timer time-out, then catalyst is next
The status information at moment is set to malfunction, and produces disconnection fault-signal.
9. method as claimed in claim 6, it is characterised in that produced according to closure state Controlling model and output control signal
The step of it is further comprising the steps：
The status information of catalyst subsequent time is set to into closure state；
If the status information at a moment is closure state on catalyst, and pressure differential condition signal is High Pressure Difference status signal, then
The status information of catalyst subsequent time is set to into malfunction, and produces closure fault-signal；
If the state at a moment is closure state on catalyst, and pressure differential condition signal is low voltage difference status signal, judges shape
Whether state transfer instruction is off-state transfer instruction, if state transfer instruction is off-state transfer instruction, will be next
The status information of moment catalyst is set to off-state；
If the status information at a moment is not closure state on catalyst, closure control signal is produced and exports, to control to connect
Tentaculum is closed.
10. method as claimed in claim 7 or 8, it is characterised in that produced according to closure state Controlling model and output control
The step of signal, is further comprising the steps：
The status information of catalyst subsequent time is set to into closure state；
If the status information at a moment is closure state on catalyst, and pressure differential condition signal is High Pressure Difference status signal, then
The status information of catalyst subsequent time is set to into malfunction, and produces closure fault-signal；
If the state at a moment is closure state on catalyst, and pressure differential condition signal is low voltage difference status signal, judges shape
Whether state transfer instruction is off-state transfer instruction, if state transfer instruction is off-state transfer instruction, will be next
The status information of moment catalyst is set to off-state；
If the status information at a moment is not closure state on catalyst, closure control signal is produced and exports, to control to connect
Tentaculum is closed.
11. methods as claimed in claim 6, it is characterised in that produced according to malfunction Controlling model and output control letter
Number the step of it is further comprising the steps：
The status information of catalyst subsequent time is set to into malfunction；
Whether the status information for judging a moment on catalyst is malfunction, if not being malfunction, output disconnects control
Signal processed, is disconnected with control contactor, and startup separator status timer, if malfunction, then judges whether to receive
Fault recovery is instructed, and whether malfunction timer is overtime；
If receiving fault recovery instruction and malfunction timer expired, reset and closing fault status timer, clearly
Except catalyst failure, and the status information of subsequent time is set to into off-state.
12. methods as any one of claim 7 to 9, it is characterised in that produced simultaneously according to malfunction Controlling model
The step of output control signal, is further comprising the steps：
The status information of catalyst subsequent time is set to into malfunction；
Whether the status information for judging a moment on catalyst is malfunction, if not being malfunction, output disconnects control
Signal processed, is disconnected with control contactor, and startup separator status timer, if malfunction, then judges whether to receive
Fault recovery is instructed, and whether malfunction timer is overtime；
If receiving fault recovery instruction and malfunction timer expired, reset and closing fault status timer, clearly
Except catalyst failure, and the status information of subsequent time is set to into off-state.
13. methods as claimed in claim 10, it is characterised in that produced according to malfunction Controlling model and output control letter
Number the step of it is further comprising the steps：
The status information of catalyst subsequent time is set to into malfunction；
Whether the status information for judging a moment on catalyst is malfunction, if not being malfunction, output disconnects control
Signal processed, is disconnected with control contactor, and startup separator status timer, if malfunction, then judges whether to receive
Fault recovery is instructed, and whether malfunction timer is overtime；
If receiving fault recovery instruction and malfunction timer expired, reset and closing fault status timer, clearly
Except catalyst failure, and the status information of subsequent time is set to into off-state.
A kind of 14. D.C. contactor combinational circuit control methods with precharge, the D.C. contactor combinational circuit includes pre-
Charging contactor and functional contact device, it is characterised in that the method comprising the steps of：
According to obtain functional contact device contact two ends voltage, the voltage difference at evaluation work contacts of contactor two ends it is absolute
Value；
The absolute value of the voltage difference is compared with predeterminated voltage difference limen value, corresponding pressure reduction shape is produced according to comparative result
State signal；
According to the instruction of functional contact device break-make and pressure differential condition signal that receive, pre-charge contactor control letter is produced and exported
Number, to control the break-make of pre-charge contactor；
Using the method as any one of claim 1~13, produce and output services catalyst control signal, to control
The break-make of functional contact device.
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| CN104576204B (en) * | 2014-12-26 | 2018-06-26 | 珠海格力电器股份有限公司 | control method and device of alternating current contactor |
| US10106042B2 (en) * | 2015-11-24 | 2018-10-23 | GM Global Technology Operations LLC | Methods of operating contactors in high voltage circuits of vehicles |
| CN108275000A (en) * | 2017-01-06 | 2018-07-13 | 武汉英康汇通电气有限公司 | A kind of viscous dead automatic recovery control method of electric vehicle contactor |
| CN107843764A (en) * | 2017-09-19 | 2018-03-27 | 珠海格力电器股份有限公司 | Power supply control device and method for electric equipment |
| CN107867183A (en) * | 2017-10-24 | 2018-04-03 | 合肥禄正新能源科技有限公司 | A kind of high voltage power distributing cabinet contactor break-make judgment means and control method |
| CN108807047A (en) * | 2018-06-22 | 2018-11-13 | 河南华盛隆源电气有限公司 | A kind of permanent-magnetic switching drive control method and system based on H bridges |
| CN110707782B (en) * | 2019-10-31 | 2021-02-02 | 维沃移动通信有限公司 | Charging control circuit, charging communication circuit, electronic device, and charging control method |
| CN113075540A (en) * | 2021-03-29 | 2021-07-06 | 阳光电源股份有限公司 | Fault state detection method and device of contactor |
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| CN102890237A (en) * | 2012-09-27 | 2013-01-23 | 潍柴动力股份有限公司 | Method and device for detecting faults of main touch point of high-voltage direct-current contact |
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| US8564914B2 (en) * | 2012-02-21 | 2013-10-22 | Sikorsky Aircraft Corporation | Fault clearing without a DC backup power source |
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| CN201365121Y (en) * | 2009-02-24 | 2009-12-16 | 邓克飞 | Vacuum contactor adhesion controller |
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