CN2814660Y - Permanent magnet contactor control circuit - Google Patents
Permanent magnet contactor control circuit Download PDFInfo
- Publication number
- CN2814660Y CN2814660Y CN 200520044326 CN200520044326U CN2814660Y CN 2814660 Y CN2814660 Y CN 2814660Y CN 200520044326 CN200520044326 CN 200520044326 CN 200520044326 U CN200520044326 U CN 200520044326U CN 2814660 Y CN2814660 Y CN 2814660Y
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- CN
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- Prior art keywords
- circuit
- permanent magnet
- iron core
- control circuit
- contactor control
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Abstract
The utility model discloses a control circuit of a permanent magnet contactor, which comprises a rectification circuit, a power supply switching signal collecting circuit connected with the output end of the rectification circuit, a switch triggering circuit connected with the power supply switching signal collecting circuit and an energy storing circuit connected with the switch triggering circuit, wherein the energy storing circuit comprises a coil and an energy storing element. When the input end of the rectification circuit has voltage, the coil generates positive pulse, the energy storing element is charged, a fixed iron core of an electromagnet is magnetized so that the polarity of the fixed iron core in a magnetic gap is opposite to the polarity of a movable iron core (permanent magnet), and the fixed iron core and the movable iron core are attracted with each other and drive the movable contacts of a contactor to close without needing to maintain electric current; when the input end of the rectification circuit has no voltage, the energy storing element discharges electricity, the coil generates reverse pulse, the fixed iron core is reversely polarized and the polarity of the fixed iron core in an air gap is the same as that of the permanent magnet so that the contactor is released.
Description
Technical field
The utility model relates to a kind of permanent magnet contactor control circuit, specifically, relates to the simplified control circuit of the unicoil permanent magnet contactor of micro-power loss noise-free.
Background technology
Present contactors etc. use high-speed double electromagnet adhesive, sticking, release more.Its shortcoming be functional reliability poor, need sticking power consumption, coil heating and operation that noise etc. is arranged.In order to overcome above-mentioned shortcoming, the contactor that has has adopted leeched line circle electromagnetic and mechanical lock, has caused the cost increase.Because the life-span of mechanical lock is shorter, so application is relatively poor.
Novel content
The purpose of this utility model is, a kind of permanent magnet contactor control circuit is provided, with overcome existing contactor functional reliability poor, need sticking power consumption, coil heating and operation that the technical problem of noise is arranged.
In order to achieve the above object, the technical solution of the utility model is as follows:
A kind of permanent magnet contactor control circuit comprises: rectification circuit; The on/off signal acquisition circuit links to each other with rectification circuit output end; The switch triggering circuit links to each other with described on/off signal acquisition circuit; And the accumulator that links to each other with described switch triggering circuit, it comprises a coil and energy-storage travelling wave tube; When rectification circuit input end had voltage, coil produced direct impulse, the energy-storage travelling wave tube charging; When rectification circuit input end does not have voltage, the energy-storage travelling wave tube discharge, coil produces reverse impulse.
When the rectification circuit front end has Control current, coil produces a forward current pulse at once, the static iron core magnetization of electromagnet, make its static iron core polarity in magnetic gap opposite with moving iron core (permanent magnet) polarity, according to the principle that there is a natural attraction between the sexes, static iron core and the adhesive mutually of moving iron core, and the moving contact closure of drive contactor.Although this moment, pulse current disappeared, owing to magnetic gap is gone to zero by maximum, moving iron core still can be kept the magnetized state of static iron core, makes the contactor closure, does not therefore need to keep electric current.If when the rectification circuit front end does not have Control current, coil produces a negative-going pulse at once, makes the static iron core reverse polarization, makes polarity in the air gap identical with permanent magnetic polarity and contactor is discharged.The back coil that closes a floodgate no longer needs energising, and therefore traditional self-sustaining link can be saved, and has therefore eliminated the sticking power consumption, and the problem of coil heating is also better solved.Divide-shut brake moment power consumption relies on maintenances of closing a floodgate of permanent magnetism power, and making closing coil electric current under the contactor "on" position is zero, and not power consumption of coil is economized on electricity more than 99% than traditional contactor.Branch, closing speed are the important indicators of contactor, permanent magnetism power, and electromagnetic force, tripping spring is finished the separating brake action jointly, and faster than traditional electrical magnetic contactor, the arcing time shortens greatly, and contact ablation degree is little, and the contact life-span obviously improves.Contactor is not subjected to the interference of net voltage fluctuation, contact atremia, no adhesion by the adhesive of permanent magnetism power.The break-make performance is good, avoids the secondary spring.Section breaker is by electromagnetic force, permanent magnetism power, common the finishing of tripping spring, makes separating brake power bigger, and speed is faster, more reliable.The coil no current passes through after the contactor adhesive, and coil does not have temperature rise, does not have the possibility of burning coil.Coil no current after the adhesive, contact does not tremble, and makes switch keep attracting state by permanent magnetism power, therefore moves noiselessness.
Particularly, described switch triggering circuit comprises switch and triode; The emitter of triode connects rectification circuit output end, and collector electrode is connected switch by resistance with voltage stabilizing didoe.
Described switch is a reverse-blocking tetrode thyristor.
Described rectification circuit is a bridge rectifier.
Preferably, be connected with piezo-resistance between described rectification circuit input end, play the surge protective effect.
Described energy-storage travelling wave tube parallel diode plays the surge protective effect.
Described coils from parallel connection of coils piezo-resistance prevents the energy-storage travelling wave tube reverse breakdown.
Description of drawings
Fig. 1 is the circuit module pie graph of the utility model embodiment;
Fig. 2 is the circuit diagram of the utility model embodiment.
Embodiment
According to Fig. 1 and Fig. 2, provide preferred embodiment of the present utility model, and described in detail below, enable to understand better function of the present utility model, characteristics.
As shown in Figure 1, permanent magnet contactor control circuit of the present utility model comprises rectification circuit 1, on/off signal acquisition circuit 2, switch triggering circuit 3, accumulator 4 and protective circuit 5.
Consult Fig. 2, terminals A1, A2 connect AC power.Diode D1-4 constitutes bridge rectifier 1, and two input connects terminals A1, A2.Be connected with piezo-resistance RV1 between terminals A1, the A2, do the power surge protection.The output 11 of bridge rectifier 1 connects resistance R 1, diode D5.Resistance R 2 and capacitor C 1 are in parallel, constitute RC circuit in parallel.This parallel connection RC circuit one end connects the output 12 of bridge rectifier 1, and this parallel connection RC circuit other end connects resistance R 1.Above-mentioned resistance R 1, resistance R 2, resistance R 3 and capacitor C 1 constitute on/off signal acquisition circuit 2.Switch triggering circuit 3 is made of triode G, resistance R 4, resistance R 5, voltage stabilizing didoe DW, capacitor C 2 and reverse-blocking tetrode thyristor MCR.The base stage of triode G connects resistance R 3.Resistance R 4 one ends connect diode D5 and reverse-blocking tetrode thyristor MCR, and the other end connects the collector electrode of resistance R 5 and triode G.Voltage stabilizing didoe DW one end connects reverse-blocking tetrode thyristor MCR, and the other end connects resistance R 5 and capacitor C 2.The output 12 of bridge rectifier 1 connects emitter, capacitor C 2 and the reverse-blocking tetrode thyristor MCR of triode G.Accumulator 4 is the LC series circuit, is made of the coil L and the capacitor C 3 of connecting.Coil L connects diode D5, and capacitor C 3 connects the output 12 of bridge rectifier 1.Protective circuit 5 is made of piezo-resistance RV2 and diode D6.Piezo-resistance RV2 is connected in parallel on by the coil L, prevents the surge current of coil L.It is other that diode D6 is connected in parallel on capacitor C 3, prevents capacitor C 3 reverse breakdowns.
Be connected with voltage when between terminals A1, A2, electric current is through resistance R 4, resistance R 5, capacitor C 2, voltage stabilizing didoe DW, at first conducting of triode G, and reverse-blocking tetrode thyristor MCR ends because of grid clamping.Rectified current is given storage capacitor C3 charging through diode D5, coil L, coil L produces the direct impulse electric current, static iron core magnetization with the electromagnet of contactor, make its static iron core polarity in magnetic gap opposite with moving iron core (permanent magnet) polarity, according to the principle that there is a natural attraction between the sexes, static iron core and the adhesive mutually of moving iron core, and the moving contact closure of drive contactor.Although this moment, pulse current disappeared, owing to magnetic gap is gone to zero by maximum, moving iron core still can be kept the magnetized state of static iron core, makes the contactor closure, does not therefore need to keep electric current.
When terminals A1, A2 outage, at first triode G ends, the energy storage electric current of capacitor C 3, and one road flowing through coil L, resistance R 4, resistance R 5, voltage stabilizing didoe DW trigger reverse-blocking tetrode thyristor MCR.Another road flowing through coil L, reverse-blocking tetrode thyristor MCR are to ground, and coil L produces the reverse impulse electric current, makes the static iron core reverse polarization, makes the polarity in the magnetic gap identical with moving iron core polarity.According to the principle that the same sex is repelled each other, static iron core separates with moving iron core, thereby makes the contactor disjunction.
By reverse-blocking tetrode thyristor MCR, triode G etc. trigger is set, utilize the charge and discharge process and the different capabilities of capacitor C 3, directly change pulse current direction and the intensity of coil L, reach the best fit of control unicoil permanent-magnetic AC contact break-make purpose and suction thereof, anti-espionage.
The front provides the description to preferred embodiment, so that any technical staff in this area can use or utilize the utility model.To this preferred embodiment, those skilled in the art can make various modifications or conversion on the basis that does not break away from the utility model principle.Should be appreciated that these modifications or conversion do not break away from protection range of the present utility model.
Claims (7)
1, a kind of permanent magnet contactor control circuit is characterized in that, comprising:
Rectification circuit;
The on/off signal acquisition circuit links to each other with rectification circuit output end;
The switch triggering circuit links to each other with described on/off signal acquisition circuit; And
With the accumulator that described switch triggering circuit links to each other, it comprises a coil and energy-storage travelling wave tube;
When rectification circuit input end had voltage, coil produced direct impulse, the energy-storage travelling wave tube charging; When rectification circuit input end does not have voltage, the energy-storage travelling wave tube discharge, coil produces reverse impulse.
2, permanent magnet contactor control circuit as claimed in claim 1 is characterized in that, described switch triggering circuit comprises switch and triode; The emitter of triode connects rectification circuit output end, and collector electrode is connected switch by resistance with voltage stabilizing didoe.
3, permanent magnet contactor control circuit as claimed in claim 2 is characterized in that, described switch is a reverse-blocking tetrode thyristor.
4, permanent magnet contactor control circuit as claimed in claim 1 is characterized in that, described rectification circuit is a bridge rectifier.
5, permanent magnet contactor control circuit as claimed in claim 4 is characterized in that, is connected with piezo-resistance between described rectification circuit input end.
6, permanent magnet contactor control circuit as claimed in claim 1 is characterized in that, described energy-storage travelling wave tube parallel diode.
7, permanent magnet contactor control circuit as claimed in claim 1 is characterized in that, described coils from parallel connection of coils piezo-resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520044326 CN2814660Y (en) | 2005-08-17 | 2005-08-17 | Permanent magnet contactor control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520044326 CN2814660Y (en) | 2005-08-17 | 2005-08-17 | Permanent magnet contactor control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2814660Y true CN2814660Y (en) | 2006-09-06 |
Family
ID=36949746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520044326 Expired - Fee Related CN2814660Y (en) | 2005-08-17 | 2005-08-17 | Permanent magnet contactor control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2814660Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101425403B (en) * | 2007-10-31 | 2010-12-01 | 吉林永大电气开关有限公司 | Pulse excitation circuit |
| CN104977529A (en) * | 2014-04-03 | 2015-10-14 | 西门子公司 | Method for testing a latching magnet of a switch and test device for the latching magnet |
-
2005
- 2005-08-17 CN CN 200520044326 patent/CN2814660Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101425403B (en) * | 2007-10-31 | 2010-12-01 | 吉林永大电气开关有限公司 | Pulse excitation circuit |
| CN104977529A (en) * | 2014-04-03 | 2015-10-14 | 西门子公司 | Method for testing a latching magnet of a switch and test device for the latching magnet |
| CN104977529B (en) * | 2014-04-03 | 2020-04-14 | 西门子公司 | Method for checking self-holding magnet of switch and checking mechanism of self-holding magnet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DELIXI ELECTRIC LTD. Free format text: FORMER OWNER: DELIXI GROUP CO., LTD. Effective date: 20071228 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20071228 Address after: Yueqing City, Zhejiang province Liushi Delixi high tech Industrial Park, zip code: 325604 Patentee after: Delixi Electric Co., Ltd. Address before: Yueqing City, Zhejiang province Liushi Delixi Industrial Park, zip code: 325604 Patentee before: Dalixi Group Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060906 Termination date: 20130817 |