CN108735552A - The coil control circuit of contactor - Google Patents
The coil control circuit of contactor Download PDFInfo
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- CN108735552A CN108735552A CN201810938230.0A CN201810938230A CN108735552A CN 108735552 A CN108735552 A CN 108735552A CN 201810938230 A CN201810938230 A CN 201810938230A CN 108735552 A CN108735552 A CN 108735552A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
- H01H47/32—Energising current supplied by semiconductor device
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Abstract
The present invention provides a kind of coil control circuit of contactor, including afterflow control circuit and coil driver, coil driver includes the PWM generator U3 of metal-oxide-semiconductor T1 and driving metal-oxide-semiconductor T1, the drain electrode of metal-oxide-semiconductor T1 is connect with contactor coil, the source electrode of metal-oxide-semiconductor T1 is grounded, with the conducting and shutdown between control contactor coil and contactor power supply, the afterflow control circuit, it is made of bidirection switching device K1, metal-oxide-semiconductor T2 and afterflow tube drive circuit, the synchronous control signal of afterflow tube drive circuit is provided by coil driver；In contactor actuation and sticking stage, the on off state of the bidirection switching device K1 of afterflow control circuit and the metal-oxide-semiconductor T1 of coil driver are complementary relationship, i.e., when metal-oxide-semiconductor T1 is connected, bidirection switching device K1 shutdowns, and contactor coil energy storage at this time；When metal-oxide-semiconductor T1 is turned off, bidirection switching device K1 conductings provide low-impedance freewheeling path by bidirection switching device K1 for contactor coil.
Description
Technical field
The present invention relates to A.C. contactor fields, and in particular to the coil control circuit of contactor.
Background technology
The electromagnetic control system of traditional contactors is made of coil and iron core, and the number of turns much hundreds of of coil is even thousands of
Circle, contactor coil are actually a sensibility reciprocal and the prodigious inductance of internal resistance, and the sensibility reciprocal of usual contactor coil is hundreds of millis
Henry arrives the rank of several henries, and internal resistance has tens ohm to hundreds of ohm.The whole work process of contactor coil can be divided into three
Stage：Actuation stage, sticking stage and off-phases.In the stage of actuation, contactor coil passes through larger operating current, coil
Generating larger electromagnetic force makes probe of contactor be closed, and the process is generally within 200ms.After probe of contactor is attracted,
It has been put into the sticking stage, has been about 1/10th of operating current in the holding current of this stage coil, excessive sticking electricity
Stream can be such that the loss of coil increases.And the stage that probe of contactor disconnects is known as off-phases, the electric current of coil, which is consumed, to be connect
Tentaculum contact just will disconnect.Contactor coil needs high current when being attracted, and smaller electric current is only needed in sticking.Traditional
Contactor, can only be by the impedance of coil itself come current limliting without other control elements.It is attracted required high current, line in order to balance
The impedance of circle cannot be designed too big.So in contactor holding course, the electric current that coil flows through is much larger than actual needs
Electric current, the heat for the coil that extra energy becomes, not only waste of energy, but also the temperature of coil can be made to increase reliability drop
It is low.In order to solve the problems, such as that traditional contactors power consumption is big, there is the power save circuit of many contactors.
If the circuit of Fig. 1 is exactly a kind of common power save circuit, by the duty ratio for adjusting metal-oxide-semiconductor TR1, so that it may which adjusting connects
The electric current of tentaculum coil 1.It makes the duty of TR1 bigger in the actuation stage, makes the duty of TR1 smaller in the sticking stage, so that it may
To allow contactor coil to realize, high current is attracted low current sticking, to reach energy-efficient effect.In the circuit, diode
D1, metal-oxide-semiconductor TR2 provide the continuous current circuit of coil, in the contactor sticking stage, when metal-oxide-semiconductor TR1 is off state, and metal-oxide-semiconductor
TR2 is connected, and provides the continuous current circuit of contactor coil inductance, at this time the continuous current circuit pressure drop of diode D1, metal-oxide-semiconductor TR2 compositions
About 0.75V, the Low ESR continuous current circuit in sticking stage are conducive to reduce the loss of entire circuit.When in contactor off-phases
When, the electric current for quickly consuming coil is needed, contactor can be turned off rapidly.Contactor off-phases, metal-oxide-semiconductor TR2 are persistently closed
It is disconnected, while metal-oxide-semiconductor TR1 also synchronizes lasting shutdown, it is rapid to consume contactor coil electric current so that contactor rapidly switches off.
Invention content
Purpose of the present invention is to, propose a kind of coil control circuit of contactor, it is same alloing contactor to rapidly switch off
When so that loss smaller of the contactor coil in the sticking stage.
In order to achieve the above-mentioned object of the invention, the present invention provides a kind of coil control circuit of contactor, including afterflow control
Circuit and coil driver, coil driver include the PWM generator U3, metal-oxide-semiconductor T1 of metal-oxide-semiconductor T1 and driving metal-oxide-semiconductor T1
Drain electrode connect with contactor coil, the source electrode of metal-oxide-semiconductor T1 ground connection, with leading between control contactor coil and contactor power supply
Logical and shutdown, the afterflow control circuit are made of, continued flow tube bidirection switching device K1, metal-oxide-semiconductor T2 and afterflow tube drive circuit
The synchronous control signal of driving circuit is provided by coil driver；It is attracted and sticking stage, afterflow control circuit in contactor
Bidirection switching device K1 and coil driver metal-oxide-semiconductor T1 on off state be complementary relationship, i.e., when metal-oxide-semiconductor T1 be connected
When, bidirection switching device K1 shutdowns, contactor coil energy storage at this time；When metal-oxide-semiconductor T1 is turned off, bidirection switching device K1 conductings,
By bidirection switching device K1 low-impedance freewheeling path is provided for contactor coil；In contactor off-phases, metal-oxide-semiconductor T1 with
Bidirection switching device K1 is simultaneously turned off so that contactor rapidly switches off.
Preferably, the afterflow control circuit includes bidirection switching device K1, resistance R1, capacitance C1, resistance R3, metal-oxide-semiconductor
T2, PhotoMOS relay is used with door U1 and NOT gate U2, bidirection switching device K1；Coil driver includes metal-oxide-semiconductor T1, resistance
R2, capacitance C2 and PWM generator U3；Its connection relation is：Two output ends of bidirection switching device K1 are drawn respectively as continuous
The output end of flow control circuit, for being connected with the both ends of contactor coil；The net of connecting that resistance R1 is composed in series with capacitance C1
Network is connected in parallel on two output ends of bidirection switching device K1；The input positive terminal of bidirection switching device K1 passes through resistance R3 connection electricity
Source VCC anodes, the drain electrode of the input negative terminal connection metal-oxide-semiconductor T2 of bidirection switching device K1, the source electrode of metal-oxide-semiconductor T2 are connected to power supply
Ground；The output end of the grid connection and door U1 of metal-oxide-semiconductor T2；With two input terminals of door, connection contactor controls signal, and one
The output end of a connection NOT gate U2, the input terminal of NOT gate U2 are connected to the output end of PWM generator U3；PWM generator U3's is defeated
Enter Enable Pin connection contactor control signal, the output end of PWM generator U3 is also connected with one end of resistance R2, and resistance R2's is another
The grid of end connection metal-oxide-semiconductor T1, the source electrode of metal-oxide-semiconductor T1 connect power ground, and the both ends of capacitance C2 are connected to the grid of metal-oxide-semiconductor T1
Pole and source electrode.
Preferably, the afterflow control circuit includes bidirection switching device K1, resistance R1, capacitance C1, resistance R3, metal-oxide-semiconductor
T2, electromagnetic relay is used with door U1 and NOT gate U2, bidirection switching device K1；Coil driver includes metal-oxide-semiconductor T1, resistance
R2, capacitance C2 and PWM generator U3；Its connection relation is：Two output ends of bidirection switching device K1 are drawn respectively as continuous
The output end of flow control circuit, for being connected with the both ends of contactor coil；The net of connecting that resistance R1 is composed in series with capacitance C1
Network is connected in parallel on two output ends of bidirection switching device K1；The input positive terminal of bidirection switching device K1 passes through resistance R3 connection electricity
Source VCC anodes, the drain electrode of the input negative terminal connection metal-oxide-semiconductor T2 of bidirection switching device K1, the source electrode of metal-oxide-semiconductor T2 are connected to power supply
Ground, the output end of the grid connection and door U1 of metal-oxide-semiconductor T2, two input terminals with door, a connection contactor control signal, one
The output end of a connection NOT gate U2, the input terminal of NOT gate U2 are connected to the output end of PWM generator U3；PWM generator U3's is defeated
Enter Enable Pin connection contactor control signal, the output end of PWM generator U3 is also connected with one end of resistance R2, and resistance R2's is another
The grid of end connection metal-oxide-semiconductor T1, the source electrode of metal-oxide-semiconductor T1 connect power ground, and the both ends of capacitance C2 are connected to the grid of metal-oxide-semiconductor T1
Pole and source electrode.
The present invention also provides a kind of coil control circuit of contactor, including afterflow control circuit and coil driver,
Coil driver includes the PWM generator U3 of metal-oxide-semiconductor T1 and driving metal-oxide-semiconductor T1, the drain electrode of metal-oxide-semiconductor T1 and contactor coil
Connection, the source electrode ground connection of metal-oxide-semiconductor T1, the afterflow control circuit, including bidirection switching device K1, resistance R3 and metal-oxide-semiconductor T2,
Connection relation is：Two output ends of bidirection switching device K1 draw the output end as afterflow control circuit respectively, for
The both ends of contactor coil are connected；The input positive terminal of bidirection switching device K1 passes through resistance R3 connection power supplys VCC anodes, two-way opened
The drain electrode of the input negative terminal connection metal-oxide-semiconductor T2 of device K1 is closed, the source electrode of metal-oxide-semiconductor T2 is connected to power ground；The grid of metal-oxide-semiconductor T2 connects
Connect flow tube driving circuit.
Preferably, the afterflow tube drive circuit, including with door U1 and NOT gate U2, two input terminals with door U1, one
It connects contactor and controls signal, the output end of a connection NOT gate U2, the input terminal of NOT gate U2 is connected to the defeated of PWM generator U3
Outlet；It is connect with the output end of door U1 with the grid of metal-oxide-semiconductor T2.
Preferably, the afterflow tube drive circuit, including with door U1, NOT gate U2, resistance R2 and capacitance C2, two with door U1
A input terminal, a connection contactor control signal, the output end of a connection NOT gate U2, and the input terminal of NOT gate U2 is connected to
The output end of PWM generator U3；The output end of PWM generator U3 is also connected with one end of resistance R2, the other end connection of resistance R2
The grid of metal-oxide-semiconductor T1；The grid of metal-oxide-semiconductor T2 is connect with the output end of door U1.
Preferably, the bidirection switching device K1 of the afterflow control circuit, using PhotoMOS relay, PhotoMOS relay
Two output ends draw the output end as afterflow control circuit respectively, for being connected with the both ends of contactor coil；Light MOS after
The input positive terminal of electric appliance passes through resistance R3 connection power supplys VCC anodes, the leakage of the input negative terminal connection metal-oxide-semiconductor T2 of PhotoMOS relay
Pole.
Preferably, the bidirection switching device K1 of the afterflow control circuit, using electromagnetic relay, the two of electromagnetic relay
A output end draws the output end as afterflow control circuit respectively, for being connected with the both ends of contactor coil；Electromagnetism relay
The input positive terminal of device passes through resistance R3 connection power supplys VCC anodes, the drain electrode of the input negative terminal connection metal-oxide-semiconductor T2 of electromagnetic relay.
Preferably, the afterflow control circuit, further includes resistance R1 and capacitance C1, what resistance R1 and capacitance C1 was composed in series
Series network is connected in parallel on two output ends of bidirection switching device K1.
Continuous current circuit of the present invention using low-impedance bidirection switching device as contactor coil replaces shown in circuit diagram 1
The continuous current circuit of TR2 in prior art and D1 compositions, the bidirection switching device can be PhotoMOS relay or electromagnetism after
The conducting resistance of electric appliance, PhotoMOS relay and electromagnetic relay is in tens milliohm ranks, conduction voltage drop about 0.1V, compared to existing
The continuous current circuit conduction voltage drop about 0.75V being made of the TR2 and D1 of circuit, the present invention have lower conduction impedance, are contacting
The sticking stage of device, energy loss be only its 1/7.
Description of the drawings
Fig. 1 is the circuit diagram for the contactor power save circuit that prior art band rapidly switches off function；
Fig. 2A is the schematic block circuit diagram of the coil control circuit of first embodiment of the invention contactor；
Fig. 2 B are the circuit diagram of the coil control circuit of first embodiment of the invention contactor；
Fig. 3 be first embodiment of the invention contactor coil control circuit in switch T1, bidirection switching device K1 and
The sequence diagram of contactor status signal；
Fig. 4 is the control signal timing diagram of the coil control circuit of first embodiment of the invention contactor；
Fig. 5 is the circuit diagram of the coil control circuit of second embodiment of the invention contactor.
Specific implementation mode
The present invention provides a kind of coil control circuit of contactor, as shown in Figure 2 A, including by low-impedance two-way switch
Afterflow control circuit FC1, coil driver FC2 and the contactor coil L of device and ON-OFF control circuit composition.Afterflow controls
Circuit FC1 includes a low-impedance bidirection switching device K1, the bidirection switching device can be PhotoMOS relay or electromagnetism after
Electric appliance.The present invention circuit connecting relation be：Two output ends (i.e. switch pole) of the bidirection switching device K1 respectively with
The both ends of contactor coil L are connected, and the input positive terminal of bidirection switching device K1 connects positive pole, two-way switch device by resistance
The input negative terminal connecting valve control circuit of part K1, power ground is connected to by ON-OFF control circuit.Bidirection switching device with open
Close the afterflow control circuit FC1 of control circuit composition contactor coil.Afterflow control circuit FC1 receives contactor and controls signal
The drive signal of Sin and coil driver FC2, to coordinate synchronization action.In addition, coil driver FC2 includes at least
One end of one switch T1, contactor coil L are connected with contactor positive pole, the other end connecting valve of contactor coil L
A switch pole of T1, another switch pole of switch T1 are connected to contactor power ground.Coil driver FC2 receives contact
Device controls signal Sin, according to the polarity of Sin to determine whether output PWM drive signal with the conducting of drive control switch T1 and
Shutdown, to the actuation and shutdown of control contactor.
Specifically, a kind of coil control circuit of contactor, is suitable for the coil of control contactor, including by Low ESR
Bidirection switching device and ON-OFF control circuit composition afterflow control circuit FC1, coil driver FC2 and contactor coil
L.Afterflow control circuit FC1 includes a low-impedance bidirection switching device K1, which can be light MOS relays
Device or electromagnetic relay.Coil driver FC2 includes at least one switch T1, is used for the energization of control contactor coil and breaks
Electricity.When contactor actuation and sticking stage, switch T1 is opposite state with the on off state of bidirection switching device K1, i.e., ought open
Close T1 conductings, bidirection switching device K1 shutdowns, at this time contactor coil energy storage；When switch T1 is turned off, bidirection switching device K1 is led
Logical, K1 provides low-impedance freewheeling path for contactor coil, with hold-in winding energy.In contactor off-phases, switch T1
It is simultaneously turned off with bidirection switching device, contactor coil energy storage quick release achievees the purpose that contactor rapidly switches off.Switch
T1, bidirection switching device K1 and contactor state timing chart are as shown in Figure 3.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further described.
First embodiment
The first embodiment of the coil control circuit of contactor of the present invention is as shown in Figure 2 B.The present invention provides a kind of contactor
Coil control circuit, include the afterflow control circuit being made of low-impedance bidirection switching device K1 and ON-OFF control circuit
FC1, coil driver FC2 and contactor coil L.Afterflow control circuit FC1 includes bidirection switching device K1, resistance R3, MOS
The afterflow tube drive circuit of pipe T2 and driving metal-oxide-semiconductor T2, wherein bidirection switching device K1 is PhotoMOS relay；Resistance R3 is limited
Leakage resistance is chosen according to the operating voltage of bidirection switching device K1, can select the resistance in 0 Europe；Afterflow tube drive circuit by with
Door U1 and NOT gate U2 are constituted；Afterflow control circuit FC1 may also include absorbing circuit, and absorbing circuit is by resistance R1 and capacitance C1 structures
At.To offset the delay of two-way switch K1 control circuits, afterflow tube drive circuit may also include delay circuit, and delay circuit is by electricity
It hinders R2 and capacitance C2 is constituted.Coil driver FC2 includes metal-oxide-semiconductor T1 and PWM generator U3.
The connection relation of the coil control circuit of contactor of the present invention is：Two output ends of bidirection switching device K1 are (i.e.
Switch pole) it is connected respectively with the both ends of contactor coil L, resistance R1 and the series network of capacitance C1 compositions are connected in parallel on two-way switch
On two output ends of device K1, while being also connected in parallel on the both ends of contactor coil L；The input positive terminal of bidirection switching device K1 is logical
Cross resistance R3 connection power supplys VCC anodes, the drain electrode of the input negative terminal connection metal-oxide-semiconductor T2 of bidirection switching device K1, the source of metal-oxide-semiconductor T2
Pole is connected to power ground, and the grid of metal-oxide-semiconductor T2 is connected with the output end of door U1, and two input terminals with door, one connects
Tentaculum controls signal Sin, the output end of a connection NOT gate U2, and the input terminal of NOT gate U2 is connected to the output of PWM generator U3
End.The output Enable Pin connection contactor of PWM generator U3 controls signal Sin, the output end connection resistance R2 of PWM generator U3
One end, the grid of the other end connection metal-oxide-semiconductor T1 of resistance R2, one end of contactor coil L connects contactor power supply VPP, connects
The drain electrode of the other end connection metal-oxide-semiconductor T1 of tentaculum coil L, the source electrode of metal-oxide-semiconductor T1 connect power ground, and the both ends of capacitance C2 connect respectively
It is connected on the grid and source electrode of metal-oxide-semiconductor T1.
It is illustrated in figure 3 the sequence diagram of contactor control signal Sin and metal-oxide-semiconductor T1, bidirection switching device K1, such as Fig. 4 institutes
It is shown as the sequential of the output end voltage VB of the output end voltage VA and door U1 of contactor control signal Sin and PWM generator U3
Figure.The control principle of the coil control circuit of first embodiment of the invention contactor is described as follows：
1, when contactor control signal Sin is low level, contactor is off state, when Sin becomes high from low level
Level enables PWM generator U3 output pwm signals, and first pulse of PWM generator U3 outputs is a broad pulse, to protect
Card contactor coil flows through high current, ensures the stabilization quick pick-up of contactor, subsequently exports burst pulse, maintains contactor coil
In a low current state, to reduce the energy consumption in contactor sticking stage.
2, when Sin becomes high level from low level, an input terminal with door U1 is Sin, is high level, defeated with door U1
Go out VB and follows its another input terminal, the i.e. output of NOT gate U2.The output VA that the input of NOT gate U2 is PWM generator U3 is (following
Referred to as VA), i.e., it is the reverse phase that PWM generator U3 exports VA with the output VB of door U1 (hereinafter referred to as VB) at this time.VA passes through
The conducting and shutdown of resistance R2, capacitance C2 driving metal-oxide-semiconductors T1, VB drive metal-oxide-semiconductor T2, control bidirection switching device K1 switch poles
Conducting and shutdown.When VA is high level, VB is low level, and metal-oxide-semiconductor T1 is connected at this time, bidirection switching device K1 shutdowns, contact
Device coil L energy storage；When VA is low level, VB is high level, and metal-oxide-semiconductor T1 is turned off at this time, bidirection switching device K1 conductings, contact
Device coil L is by bidirection switching device K1 afterflows, with hold-in winding energy.Wherein resistance R2, capacitance C2 form delay circuit, with
Offset the time delay of bidirection switching device K1 control circuits so that metal-oxide-semiconductor T1, bidirection switching device K1 actions synchronize.
3, when Sin becomes low level from high level, an input terminal with door U1 is Sin, is low level, no matter its is another
Which kind of level a input terminal is, all exports low level with the output VB of door U1, PWM generator U3 is prohibited to export at this time, and VA is defeated
Go out low level, metal-oxide-semiconductor T1 is turned off at this time, and simultaneously bi-directionally switching device K1 is turned off, and the energy quick release of contactor coil L connects
Tentaculum turns off rapidly.The absorbing circuit that wherein resistance R1, capacitance C1 are formed can prevent bidirection switching device K1, the both ends metal-oxide-semiconductor T1
It generates excessively high voltage and is damaged.
4, Fig. 4 Sin, VA, VB etc. control the sequence diagram of signal.
Second embodiment
The second embodiment of the coil control circuit of contactor of the present invention is as shown in Figure 5.The present invention provides a kind of contactor
Coil control circuit, as shown in figure 5, including the afterflow being made of low-impedance bidirection switching device K1 and ON-OFF control circuit
Control circuit FC1, coil driver FC2 and contactor coil L.Afterflow control circuit FC1 includes bidirection switching device K1, electricity
Hinder R1, capacitance C1, resistance R3, metal-oxide-semiconductor T2 and door U1 and NOT gate U2, wherein bidirection switching device K1 is electromagnetic relay.Line
It includes metal-oxide-semiconductor T1, resistance R2, capacitance C2 and PWM generator U3 to enclose driving circuit FC2.
Its connection relation is：Two output ends of bidirection switching device K1 are connected with the both ends of contactor coil L respectively, electricity
Resistance R1 and the series network of capacitance C1 compositions are connected in parallel on two output ends of bidirection switching device K1, while being also connected in parallel on contact
The both ends of device coil L；The input positive terminal of bidirection switching device K1 passes through resistance R3 connection power supplys VCC anodes, bidirection switching device
The drain electrode of the input negative terminal connection metal-oxide-semiconductor T2 of K1, the source electrode of metal-oxide-semiconductor T2 are connected to power ground, the grid of metal-oxide-semiconductor T2 with door U1
Output end be connected, two input terminals with door, connection contactor control signal Sin, the output of a connection NOT gate U2
End, the input terminal of NOT gate U2 are connected to the output end of PWM generator U3.The input Enable Pin of PWM generator U3 connects contactor
The output end of control signal Sin, U3 are also connected with one end of resistance R2, the grid of the other end connection metal-oxide-semiconductor T1 of resistance R2；Contact
The drain electrode of the other end connection metal-oxide-semiconductor T1 of one end connection contactor the power supply VPP, contactor coil L of device coil L, metal-oxide-semiconductor T1's
Source electrode connects power ground, and the both ends of capacitance C2 are connected to the grid and source electrode of metal-oxide-semiconductor T1.
The control method of the coil control circuit of second embodiment of the invention contactor is identical with the first embodiment.
The coil control circuit of contactor of the present invention, using low-impedance bidirection switching device as the continuous of contactor coil
Road is flowed back to instead of the continuous current circuit of metal-oxide-semiconductor TR2 and diode D1 compositions in available circuit as shown in Figure 1, the two-way switch device
Part can be PhotoMOS relay or electromagnetic relay, and the conducting resistance of PhotoMOS relay and electromagnetic relay is in tens milliohm grades
Not, the conduction voltage drop of the about 0.75V of the metal-oxide-semiconductor TR2 of available circuit and the continuous current circuit of diode D1 compositions, side of the present invention are compared
Case can further reduce conduction impedance, in the sticking stage of contactor, energy loss be only its 1/7.
It the above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
The limitation of the present invention, protection scope of the present invention should be subject to claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
Protection scope of the present invention is also should be regarded as into retouching.
Claims (9)
1. a kind of coil control circuit of contactor, including afterflow control circuit and coil driver, coil driver packet
It includes metal-oxide-semiconductor T1 and the PWM generator U3 of metal-oxide-semiconductor T1, the drain electrode of metal-oxide-semiconductor T1 is driven to be connect with contactor coil, the source of metal-oxide-semiconductor T1
Pole is grounded, it is characterised in that：
The afterflow control circuit is made of bidirection switching device K1, metal-oxide-semiconductor T2 and afterflow tube drive circuit, continued flow tube driving
The synchronous control signal of circuit is provided by coil driver；
It is attracted and sticking stage, the bidirection switching device K1 of afterflow control circuit and the metal-oxide-semiconductor of coil driver in contactor
The on off state of T1 is complementary relationship, i.e., when metal-oxide-semiconductor T1 is connected, bidirection switching device K1 shutdowns, and contactor coil storage at this time
Energy；When metal-oxide-semiconductor T1 is turned off, bidirection switching device K1 conductings provide low-resistance by bidirection switching device K1 for contactor coil
Anti- freewheeling path；
In contactor off-phases, metal-oxide-semiconductor T1 is simultaneously turned off with bidirection switching device K1 so that contactor rapidly switches off.
2. the coil control circuit of contactor according to claim 1, it is characterised in that：The afterflow control circuit includes
Bidirection switching device K1, resistance R1, capacitance C1, resistance R3, metal-oxide-semiconductor T2 and door U1 and NOT gate U2, bidirection switching device K1 are used
PhotoMOS relay；Coil driver includes metal-oxide-semiconductor T1, resistance R2, capacitance C2 and PWM generator U3；
Its connection relation is：Two output ends of bidirection switching device K1 draw the output end as afterflow control circuit respectively,
It is connected for the both ends with contactor coil；The series network that resistance R1 and capacitance C1 is composed in series is connected in parallel on bidirection switching device
On two output ends of K1；The input positive terminal of bidirection switching device K1 passes through resistance R3 connection power supplys VCC anodes, two-way switch device
The drain electrode of the input negative terminal connection metal-oxide-semiconductor T2 of part K1, the source electrode of metal-oxide-semiconductor T2 are connected to power ground；Metal-oxide-semiconductor T2 grid connection with
The output end of door U1；With two input terminals of door, connection contactor controls signal, the output end of a connection NOT gate U2,
The input terminal of NOT gate U2 is connected to the output end of PWM generator U3；The input Enable Pin connection contactor control of PWM generator U3
Signal, the output end of PWM generator U3 are also connected with one end of resistance R2, and the other end of resistance R2 connects the grid of metal-oxide-semiconductor T1,
The source electrode of metal-oxide-semiconductor T1 connects power ground, and the both ends of capacitance C2 are connected to the grid and source electrode of metal-oxide-semiconductor T1.
3. the coil control circuit of contactor according to claim 1, it is characterised in that：The afterflow control circuit includes
Bidirection switching device K1, resistance R1, capacitance C1, resistance R3, metal-oxide-semiconductor T2 and door U1 and NOT gate U2, bidirection switching device K1 are adopted
Use electromagnetic relay；Coil driver includes metal-oxide-semiconductor T1, resistance R2, capacitance C2 and PWM generator U3；
Its connection relation is：Two output ends of bidirection switching device K1 draw the output end as afterflow control circuit respectively,
It is connected for the both ends with contactor coil；The series network that resistance R1 and capacitance C1 is composed in series is connected in parallel on bidirection switching device
On two output ends of K1；The input positive terminal of bidirection switching device K1 passes through resistance R3 connection power supplys VCC anodes, two-way switch device
The drain electrode of the input negative terminal connection metal-oxide-semiconductor T2 of part K1, the source electrode of metal-oxide-semiconductor T2 are connected to power ground, the grid connection of metal-oxide-semiconductor T2 with
The output end of door U1, two input terminals with door, a connection contactor control signal, the output end of a connection NOT gate U2,
The input terminal of NOT gate U2 is connected to the output end of PWM generator U3；The input Enable Pin connection contactor control of PWM generator U3
Signal, the output end of PWM generator U3 are also connected with one end of resistance R2, and the other end of resistance R2 connects the grid of metal-oxide-semiconductor T1,
The source electrode of metal-oxide-semiconductor T1 connects power ground, and the both ends of capacitance C2 are connected to the grid and source electrode of metal-oxide-semiconductor T1.
4. a kind of coil control circuit of contactor, including afterflow control circuit and coil driver, coil driver, packet
It includes metal-oxide-semiconductor T1 and the PWM generator U3 of metal-oxide-semiconductor T1, the drain electrode of metal-oxide-semiconductor T1 is driven to be connect with contactor coil, the source of metal-oxide-semiconductor T1
Pole is grounded, it is characterised in that：
The afterflow control circuit, including bidirection switching device K1, resistance R3 and metal-oxide-semiconductor T2, connection relation be：Two-way switch
Two output ends of device K1 draw the output end as afterflow control circuit respectively, for the both ends phase with contactor coil
Even；The input positive terminal of bidirection switching device K1 passes through resistance R3 connection power supplys VCC anodes, the input negative terminal of bidirection switching device K1
The drain electrode of metal-oxide-semiconductor T2 is connected, the source electrode of metal-oxide-semiconductor T2 is connected to power ground；Metal-oxide-semiconductor T2 is driven by afterflow tube drive circuit.
5. the coil control circuit of contactor according to claim 4, it is characterised in that：The afterflow tube drive circuit,
Including with door U1 and NOT gate U2, two input terminals with door U1, a connection contactor control signal, one connects NOT gate U2's
Output end, the input terminal of NOT gate U2 are connected to the output end of PWM generator U3；With the grid of the output end and metal-oxide-semiconductor T2 of door U1
Connection.
6. the coil control circuit of contactor according to claim 4, it is characterised in that：The afterflow tube drive circuit,
Including with door U1, NOT gate U2, resistance R2 and capacitance C2, two input terminals with door U1, a connection contactor controls signal, and one
The output end of a connection NOT gate U2, the input terminal of NOT gate U2 are connected to the output end of PWM generator U3；PWM generator U3's is defeated
Outlet is also connected with one end of resistance R2, the grid of the other end connection metal-oxide-semiconductor T1 of resistance R2；It connect MOS with the output end of door U1
The grid of pipe T2.
7. the coil control circuit of contactor according to claim 4, it is characterised in that：Pair of the afterflow control circuit
To switching device K1, using PhotoMOS relay, two output ends of PhotoMOS relay are drawn respectively is used as afterflow control circuit
Output end, for being connected with the both ends of contactor coil；The input positive terminal of PhotoMOS relay passes through resistance R3 connection power supplys
VCC anodes, the drain electrode of the input negative terminal connection metal-oxide-semiconductor T2 of PhotoMOS relay.
8. the coil control circuit of contactor according to claim 4, it is characterised in that：Pair of the afterflow control circuit
To switching device K1, using electromagnetic relay, two output ends of electromagnetic relay are drawn respectively as afterflow control circuit
Output end, for being connected with the both ends of contactor coil；The input positive terminal of electromagnetic relay by resistance R3 connection power supplys VCC just
Pole, the drain electrode of the input negative terminal connection metal-oxide-semiconductor T2 of electromagnetic relay.
9. the coil control circuit of contactor according to any one of claims 4 to 8, it is characterised in that：The afterflow
Control circuit, further includes resistance R1 and capacitance C1, and the series network that resistance R1 and capacitance C1 is composed in series is connected in parallel on two-way switch
On two output ends of device K1.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810938230.0A CN108735552B (en) | 2018-08-17 | 2018-08-17 | Coil control circuit of contactor |
| PCT/CN2019/084983 WO2020034665A1 (en) | 2018-08-17 | 2019-04-29 | Coil control circuit of contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810938230.0A CN108735552B (en) | 2018-08-17 | 2018-08-17 | Coil control circuit of contactor |
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| Publication Number | Publication Date |
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| CN108735552A true CN108735552A (en) | 2018-11-02 |
| CN108735552B CN108735552B (en) | 2024-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810938230.0A Active CN108735552B (en) | 2018-08-17 | 2018-08-17 | Coil control circuit of contactor |
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| WO (1) | WO2020034665A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020034665A1 (en) * | 2018-08-17 | 2020-02-20 | 广州金升阳科技有限公司 | Coil control circuit of contactor |
| CN112563074A (en) * | 2019-09-26 | 2021-03-26 | 嘉润电气科技有限公司 | Control method of power-saving and quick-release control circuit of contactor |
| CN112737432A (en) * | 2020-12-24 | 2021-04-30 | 安荣信科技(北京)有限公司 | Bidirectional follow current circuit of direct current motor |
| CN113012983A (en) * | 2019-12-20 | 2021-06-22 | 施耐德电气工业公司 | Control device and method for contactor |
| WO2021151282A1 (en) * | 2020-01-31 | 2021-08-05 | 郭桥石 | Energy-saving circuit and starting apparatus |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201348976Y (en) * | 2009-01-22 | 2009-11-18 | 厦门士林电机有限公司 | Drive circuit for coil of contactor |
| CN101931251A (en) * | 2010-08-10 | 2010-12-29 | 江苏尚特风光电力工程有限公司 | Negative pressure drive current following device |
| CN103247475A (en) * | 2013-05-15 | 2013-08-14 | 江苏大学 | Constant-magnetic maintaining AC contactor control circuit and control method thereof |
| CN104576203A (en) * | 2014-12-04 | 2015-04-29 | 北京赛德高科铁道电气科技有限责任公司 | Power control circuit for contactor |
| CN105321770A (en) * | 2014-07-30 | 2016-02-10 | 上海电科电器科技有限公司 | Alternating current contactor controller and control method |
| US20160071642A1 (en) * | 2013-04-25 | 2016-03-10 | Hitachi Automotive Systems, Ltd. | Electromagnetic Coil Driving Control Device |
| CN105470046A (en) * | 2015-12-31 | 2016-04-06 | 广州金升阳科技有限公司 | Coil driving circuit of contactor and control method of coil driving current |
| CN106024521A (en) * | 2016-07-05 | 2016-10-12 | 广州金升阳科技有限公司 | Coil control circuit of contactor |
| CN206421993U (en) * | 2016-12-22 | 2017-08-18 | 上海比亚迪有限公司 | A kind of relay coil drive circuit controlled based on PWM ripples |
| WO2018049834A1 (en) * | 2016-09-19 | 2018-03-22 | 东莞市三友联众电器有限公司 | Energy-saving relay |
| CN107919250A (en) * | 2016-10-11 | 2018-04-17 | 黄石先达电气有限公司 | A kind of gating pulse A.C. contactor, which starts, remains on circuit |
| CN107993892A (en) * | 2017-12-28 | 2018-05-04 | 北京中车赛德铁道电气科技有限公司 | A kind of power control circuit suitable for electric locomotive contactor |
| CN207338245U (en) * | 2017-09-20 | 2018-05-08 | 菲尼克斯亚太电气（南京）有限公司 | A kind of relay drive circuit of pwm pulse control |
| CN208674002U (en) * | 2018-08-17 | 2019-03-29 | 广州金升阳科技有限公司 | The coil control circuit of contactor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5014180A (en) * | 1989-12-11 | 1991-05-07 | Sundstrand Corporation | Lossless snubber circuit |
| CN102262977B (en) * | 2010-05-26 | 2013-10-09 | 台达电子工业股份有限公司 | Drive circuit of AC contactor |
| CN205303336U (en) * | 2015-12-15 | 2016-06-08 | 施耐德电器工业公司 | Controlling means of contactor |
| CN205490156U (en) * | 2016-03-25 | 2016-08-17 | 成都大奇鹰科技有限公司 | Quasi -resonance is turned over and is swashed switching power supply |
| CN108735552B (en) * | 2018-08-17 | 2024-01-16 | 广州金升阳科技有限公司 | Coil control circuit of contactor |
-
2018
- 2018-08-17 CN CN201810938230.0A patent/CN108735552B/en active Active
-
2019
- 2019-04-29 WO PCT/CN2019/084983 patent/WO2020034665A1/en active Application Filing
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201348976Y (en) * | 2009-01-22 | 2009-11-18 | 厦门士林电机有限公司 | Drive circuit for coil of contactor |
| CN101931251A (en) * | 2010-08-10 | 2010-12-29 | 江苏尚特风光电力工程有限公司 | Negative pressure drive current following device |
| US20160071642A1 (en) * | 2013-04-25 | 2016-03-10 | Hitachi Automotive Systems, Ltd. | Electromagnetic Coil Driving Control Device |
| CN103247475A (en) * | 2013-05-15 | 2013-08-14 | 江苏大学 | Constant-magnetic maintaining AC contactor control circuit and control method thereof |
| CN105321770A (en) * | 2014-07-30 | 2016-02-10 | 上海电科电器科技有限公司 | Alternating current contactor controller and control method |
| CN104576203A (en) * | 2014-12-04 | 2015-04-29 | 北京赛德高科铁道电气科技有限责任公司 | Power control circuit for contactor |
| CN105470046A (en) * | 2015-12-31 | 2016-04-06 | 广州金升阳科技有限公司 | Coil driving circuit of contactor and control method of coil driving current |
| CN106024521A (en) * | 2016-07-05 | 2016-10-12 | 广州金升阳科技有限公司 | Coil control circuit of contactor |
| WO2018049834A1 (en) * | 2016-09-19 | 2018-03-22 | 东莞市三友联众电器有限公司 | Energy-saving relay |
| CN107919250A (en) * | 2016-10-11 | 2018-04-17 | 黄石先达电气有限公司 | A kind of gating pulse A.C. contactor, which starts, remains on circuit |
| CN206421993U (en) * | 2016-12-22 | 2017-08-18 | 上海比亚迪有限公司 | A kind of relay coil drive circuit controlled based on PWM ripples |
| CN207338245U (en) * | 2017-09-20 | 2018-05-08 | 菲尼克斯亚太电气（南京）有限公司 | A kind of relay drive circuit of pwm pulse control |
| CN107993892A (en) * | 2017-12-28 | 2018-05-04 | 北京中车赛德铁道电气科技有限公司 | A kind of power control circuit suitable for electric locomotive contactor |
| CN208674002U (en) * | 2018-08-17 | 2019-03-29 | 广州金升阳科技有限公司 | The coil control circuit of contactor |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020034665A1 (en) * | 2018-08-17 | 2020-02-20 | 广州金升阳科技有限公司 | Coil control circuit of contactor |
| CN112563074A (en) * | 2019-09-26 | 2021-03-26 | 嘉润电气科技有限公司 | Control method of power-saving and quick-release control circuit of contactor |
| CN113012983A (en) * | 2019-12-20 | 2021-06-22 | 施耐德电气工业公司 | Control device and method for contactor |
| WO2021121400A1 (en) * | 2019-12-20 | 2021-06-24 | 施耐德电气工业公司 | Control device and method for contactor |
| CN113012983B (en) * | 2019-12-20 | 2022-06-03 | 施耐德电气工业公司 | Control device and method for contactor |
| WO2021151282A1 (en) * | 2020-01-31 | 2021-08-05 | 郭桥石 | Energy-saving circuit and starting apparatus |
| CN112737432A (en) * | 2020-12-24 | 2021-04-30 | 安荣信科技(北京)有限公司 | Bidirectional follow current circuit of direct current motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108735552B (en) | 2024-01-16 |
| WO2020034665A1 (en) | 2020-02-20 |
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