CN201171023Y - Pulse energizing circuit for permanent magnet type bistable contactor - Google Patents
Pulse energizing circuit for permanent magnet type bistable contactor Download PDFInfo
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- CN201171023Y CN201171023Y CNU2008200311477U CN200820031147U CN201171023Y CN 201171023 Y CN201171023 Y CN 201171023Y CN U2008200311477 U CNU2008200311477 U CN U2008200311477U CN 200820031147 U CN200820031147 U CN 200820031147U CN 201171023 Y CN201171023 Y CN 201171023Y
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- pulse excitation
- controllable silicon
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Abstract
The utility model relates to a permanent magnet bistable contactor pulse excitation circuit which comprises a rectification circuit, a first voltage dependent resistor trigger circuit and a second voltage dependent resistor sample circuit, etc. The permanent magnet bistable contactor pulse excitation circuit is characterized in that a resistor which absorbs circuit creepage voltage is added in a power supply inlet wire of a contactor control part and is in parallel connection with a capacitor. In addition, a fourth voltage dependent resistor which absorbs operation overvoltage is arranged additionally and is in parallel connection with the capacitor. The permanent magnet bistable contactor pulse excitation circuit are provided with the resistor which absorbs the circuit creepage voltage and the fourth voltage dependent resistor which absorbs the operation overvoltage additionally, so the permanent magnet bistable contactor pulse excitation circuit can ensure the normal work of the sample circuit and avoids the phenomenon that a contactor is not switched off when induction voltage is slightly high; the permanent magnet bistable contactor pulse excitation circuit takes effect together with the capacitor to increase anti-interference capability; in addition, the permanent magnet bistable contactor pulse excitation circuit can also absorb the operation overvoltage and protects an electronic element of an internal control part from being broken through and damaged by voltage; compared with the prior similar product, the permanent magnet bistable contactor pulse excitation circuit has obviously improved reliability and stability, is fit for the national condition better and can be popularized and applied.
Description
Technical field
The utility model relates to a kind of permanent magnetism type contactor pulse excitation circuit, especially relate to a kind of permanent-magnet double steady-state contactor pulse excitation circuit that absorbs electrical leakage voltage and switching overvoltage, belong to AC/DC contactor, relay, high-low pressure circuit breaker class contactor control device technical field.
Background technology
Permanent-magnet double steady-state contactor is subjected to common concern in recent years owing to have remarkable advantages such as the source of trouble is few, noise is little, operation energy consumption is low.Its typical structure is: permanent magnet and solenoid are installed in the shell frame that yoke constitutes, settle the armature that can between two settling positions, move in the coil, by pulse excitation circuit discharging and recharging to SCR control electric capacity, make and on solenoid, produce positive and negative electric pulse, and then produce respectively and permanent magnet in the same way or during reverse magnetic field, armature will move to two settling positions respectively, realizes required circuit branch, closes control thereby drive the execution member.
Fig. 1 is the permanent-magnet double steady-state contactor pulse excitation circuit schematic diagram of prior art, as shown in Figure 1, the pulse excitation circuit of existing permanent-magnet double steady-state contactor mainly comprises charge-discharge circuit and controllable silicon positive and negative pulse energized circuit that rectification circuit, the first piezo-resistance circuits for triggering, the second piezo-resistance sample circuit, transistor amplifier, coil capacity are connected into; The output connecting triggering circuit of rectification circuit, circuits for triggering are connected across between the positive pole and trigger electrode of forward exciting controllable silicon DG1; The output of forward exciting controllable silicon DG1 constitutes the forward energized circuit by coil L and capacitor C 4, the C5 of charge-discharge circuit; The nominal voltage of the second piezo-resistance YR2 is less than the first piezo-resistance YR1, the output of rectification circuit accesses the sample circuit, the output of sample circuit connects the base stage of amplifying circuit triode Q1, amplifying circuit is connected across between the negative pole and trigger electrode of reverse exciting controllable silicon DG2, and oppositely the output of exciting controllable silicon DG2 constitutes reverse energized circuit by capacitor C 4, C5 and the coil L of charge-discharge circuit.
Above-mentioned pulse excitation circuit is by the reverse exciting controllable silicon DG2 of triode Q1 clamper of sample circuit control, and utilize the difference of the first piezo-resistance YR1 and the second piezo-resistance YR2, guarantee the not conducting simultaneously of controllable silicon of positive and negative electric pulse in carrying out member branch, closing operation, guaranteed the reliability and the antijamming capability of pulse excitation circuit; Secondly, the change by armature, magnetic yoke structure and movement position relation simplifies the structure, and has guaranteed the reliable and stable of operating mechanism combined floodgate control position state.
Though above-mentioned permanent-magnet double steady-state contactor pulse excitation circuit has plurality of advantages, has more electric capacity, coil in circuit, is easy to generate line electrical leakage voltage, it is induced voltage, when induced voltage is higher, cause the non-shut-brake phenomenon of contactor easily, antijamming capability is not strong; In addition, when main contact disjunction or adhesive, inductive load or capacitive load can produce moment negative peak high voltage, i.e. switching overvoltage, and switching overvoltage is damaged very big to the electronic component of inner control section, cause electronic component to puncture easily.
The utility model content
For solving above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of permanent-magnet double steady-state contactor pulse excitation circuit that can absorb electrical leakage voltage and switching overvoltage, improves antijamming capability, and guarantees the safety of electronic devices and components.
For achieving the above object, the utility model is to realize by following technical scheme:
A kind of permanent-magnet double steady-state contactor pulse excitation circuit comprises charge-discharge circuit and controllable silicon positive and negative pulse energized circuit that rectification circuit, the first piezo-resistance circuits for triggering, the second piezo-resistance sample circuit, transistor amplifier, coil capacity are connected into; The output connecting triggering circuit of rectification circuit, circuits for triggering are connected across between the positive pole and trigger electrode of forward exciting controllable silicon; The output of forward exciting controllable silicon constitutes the forward energized circuit by the coil and the electric capacity of charge-discharge circuit; The nominal voltage of second piezo-resistance is less than first piezo-resistance, the output of rectification circuit accesses the sample circuit, the output of sample circuit connects the base stage of amplifying circuit triode, amplifying circuit is connected across between the negative pole and trigger electrode of reverse exciting controllable silicon, and oppositely the output of exciting controllable silicon constitutes reverse energized circuit by the electric capacity and the coil of charge-discharge circuit; It is characterized in that in the electric power incoming line of contactor control section, setting up the resistance that absorbs line electrical leakage voltage, in parallel with electric capacity.
Aforesaid permanent-magnet double steady-state contactor pulse excitation circuit is characterized in that also having additional the 4th piezo-resistance that absorbs switching overvoltage in the electric power incoming line of contactor control section, and is in parallel with above-mentioned resistance and electric capacity.
Aforesaid permanent-magnet double steady-state contactor pulse excitation circuit is characterized in that the absorption Disturbance in Power Net clutter circuit that connecting resistance constitutes between described sample circuit input and the ground.
Aforesaid permanent-magnet double steady-state contactor pulse excitation circuit is characterized in that connecing reverse-biased diode between the negative pole of described forward exciting controllable silicon and the trigger electrode.
Aforesaid permanent-magnet double steady-state contactor pulse excitation circuit is characterized in that described forward exciting controllable silicon and coil are other in parallel in order to keep the resistance of discharge voltage.
Aforesaid permanent-magnet double steady-state contactor pulse excitation circuit is characterized in that described coil two ends the 3rd piezo-resistance in parallel.
Aforesaid permanent-magnet double steady-state contactor pulse excitation circuit is characterized in that resistance in parallel is distinguished on the electric capacity side of described charge-discharge circuit.
In the work, when supply voltage surpasses the nominal voltage of circuits for triggering first piezo-resistance, the conducting of forward exciting controllable silicon, the coil charges excitation, the armature work of contactor is to the attracted position, realize required circuit combined floodgate control, after electric capacity is full of, the circuits for triggering decompression, the forward exciting controllable silicon ends, and stops the excitation of charging, this moment, sample circuit must make the amplifying circuit conducting, thereby guarantee that reverse exciting controllable silicon ends, even after this supply voltage fluctuates in certain limit, the stable state that closed magnet circuit also can holding armature is closed a floodgate; When supply voltage was lower than predetermined value or outage, sample circuit can make amplifying circuit end, thereby makes reverse exciting controllable silicon conducting, capacitor discharge makes the reverse excitation of coil, and armature motion is to another stable position, realize required circuit separating brake control, this moment, the forward exciting controllable silicon must end.When producing electrical leakage voltage and switching overvoltage in the circuit, can absorb by the resistance and the 4th piezo-resistance of setting up, guarantee the working properly of circuit.
The beneficial effects of the utility model are: the utility model is by setting up resistance that absorbs electrical leakage voltage and the 4th piezo-resistance that absorbs switching overvoltage, can guarantee the working properly of sample circuit, prevent induced voltage when higher, make the non-shut-brake phenomenon of contactor, with the electric capacity acting in conjunction, increase antijamming capability; In addition, can also absorb switching overvoltage, the electronic component of protection internal control part is not damaged by over-voltage breakdown, compares with existing like product, and reliability, stability significantly improve, and are more suitable for national conditions, can apply.
Description of drawings
Fig. 1 is the permanent-magnet double steady-state contactor pulse excitation circuit schematic diagram of prior art;
Fig. 2 is a permanent-magnet double steady-state contactor pulse excitation circuit schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 2 is a permanent-magnet double steady-state contactor pulse excitation circuit schematic diagram of the present utility model.As shown in Figure 2, in the permanent-magnet double steady-state contactor pulse excitation circuit of the present utility model, four diode D1-D4 form bridge rectifier, the output of rectification circuit connects the circuits for triggering that current-limiting resistance R13 connects with the first piezo-resistance YR1 and constitutes, these circuits for triggering are connected across between the positive pole and trigger electrode of forward exciting controllable silicon DG1, and the output of this forward exciting controllable silicon DG1 constitutes the forward energized circuit with the coil L that connects and charge and discharge capacitance C4, C5.In addition, the output of rectification circuit also connects the second piezo-resistance YR2, the diode D9 of series connection according to the order of sequence, the sample circuit (calibration value of YR2 is less than YR1) that resistance R 14 constitutes, the output of this sample circuit connects the base stage of amplifying circuit triode Q1, the collector and emitter of this triode QI is connected across between the trigger electrode and negative pole of reverse exciting controllable silicon DG2, and charge and discharge capacitance C4, the C5 of series connection and coil L constitute reverse energized circuit by diode D7, resistance R 4, diode D8 and resistance R 5, R6 and reverse exciting controllable silicon DG2.In addition, in contactor control section electric power incoming line, also be connected to resistance R 01 and the 4th piezo-resistance YR01, in parallel with capacitor C 1.Resistance R 01 is in order to absorb line electrical leakage voltage, and is working properly to guarantee sample circuit, prevents the non-shut-brake phenomenon of contactor that causes owing to induced voltage is higher, with the C1 acting in conjunction, increases antijamming capability.The 4th piezo-resistance is used to absorb switching overvoltage (when main contact disjunction or adhesive inductive load or capacitive load, can produce moment negative peak overvoltage), and the electronic devices and components of protection internal control part are not damaged by over-voltage breakdown.
In the work, when control voltage is higher than predetermined value (for example being 150V), the first piezo-resistance YR1 is breakdown, trigger current is A → D5 → R13 → YR1 → DG1 trigger electrode from Fig. 2, make forward exciting controllable silicon DG1 conducting, the forward exciting current is by A point → D6 → L → C4 → C5 → B point, and pulse excitation circuit adds the forward exciting current to the coil of contactor as a result, the armature adhesive; After this forward exciting controllable silicon DG1 ends fast because of charge and discharge capacitance C4, C5 are full of electricity, thereby keeps stable attracting state.In the above process,, therefore guarantee that by triode Q1 reverse exciting controllable silicon DG2 reliably ends because the second piezo-resistance YR2 punctures earlier.
When control voltage is lower than calibration value (for example being 100V) or is zero, the second piezo-resistance YR2 does not puncture, triode Q1 enters cut-off state rapidly because of no base current, charge and discharge capacitance C4, C5 both end voltage are added on the reverse exciting controllable silicon DG2, make reverse exciting controllable silicon DG2 conducting, reverse exciting current C4 → L → D7 → D8 → R5 → R6 → DG2 → C5 → C4 from Fig. 2 adds the reverse impulse electric current to the coil of contactor, make the armature disjunction, and the stable state when keeping disjunction.In the above process, forward exciting controllable silicon DG1 remains cut-off state.
The utility model is by setting up resistance R 01 that absorbs electrical leakage voltage and the 4th piezo-resistance YR01 that absorbs switching overvoltage, can guarantee the working properly of sample circuit, prevent induced voltage when higher, make the non-shut-brake phenomenon of contactor, with capacitor C 1 acting in conjunction, increase antijamming capability; In addition, can also absorb switching overvoltage, the electronic component of protection internal control part is not damaged by over-voltage breakdown; make that the prolongation in useful life and the quality of contactor are more outstanding, compare that reliability, stability significantly improve with existing like product; be more suitable for national conditions, can apply.
In addition, above circuit also has following characteristics:
1, connects the absorption Disturbance in Power Net clutter circuit that series resistance R1, R2 constitute between sample circuit input and the ground, be used to absorb the Disturbance in Power Net clutter, thereby strengthen the antijamming capability of entire circuit;
2, between the negative pole of forward exciting controllable silicon DG1 and trigger electrode, meet diode D6, D7, therefore when the reverse excitation of capacitor discharge, can between forward exciting controllable silicon DG1 is because of its negative pole and trigger electrode, have-reversed bias voltage further guarantees to end;
3, coil L two ends the 3rd piezo-resistance YR3 in parallel can prevent to damage electronic component by the overvoltage that is created in the coil two ends fast because of forward exciting controllable silicon DG1;
4, at other each resistance R 11 in parallel of charge and discharge capacitance C4, C5, R12, cause one of them overvoltage to avoid capacitor voltage equalizing not wait;
5, the bigger resistance R 3 of the other resistance in parallel of forward exciting controllable silicon DG1 and coil L can compensate for losses, keeps charge and discharge capacitance C4, C5 to have enough discharge voltages.
In addition to the implementation, the utility model can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection range of the present utility model.
Claims (7)
1, permanent-magnet double steady-state contactor pulse excitation circuit comprises charge-discharge circuit and controllable silicon positive and negative pulse energized circuit that rectification circuit, the first piezo-resistance circuits for triggering, the second piezo-resistance sample circuit, transistor amplifier, coil capacity are connected into; The output connecting triggering circuit of rectification circuit, circuits for triggering are connected across between the positive pole and trigger electrode of forward exciting controllable silicon; The output of forward exciting controllable silicon constitutes the forward energized circuit by the coil and the electric capacity of charge-discharge circuit; The nominal voltage of second piezo-resistance is less than first piezo-resistance, the output of rectification circuit accesses the sample circuit, the output of sample circuit connects the base stage of amplifying circuit triode, amplifying circuit is connected across between the negative pole and trigger electrode of reverse exciting controllable silicon, and oppositely the output of exciting controllable silicon constitutes reverse energized circuit by the electric capacity and the coil of charge-discharge circuit; It is characterized in that in the electric power incoming line of contactor control section, setting up the resistance that absorbs line electrical leakage voltage, in parallel with electric capacity.
2, according to the described permanent-magnet double steady-state contactor pulse excitation circuit of claim 1, it is characterized in that in the electric power incoming line of contactor control section, also having additional the 4th piezo-resistance that absorbs switching overvoltage, in parallel with above-mentioned resistance and electric capacity.
3,, it is characterized in that the absorption Disturbance in Power Net clutter circuit that connecting resistance constitutes between described sample circuit input and the ground according to claim 1 or 2 described permanent-magnet double steady-state contactor pulse excitation circuits.
4,, it is characterized in that connecing reverse-biased diode between the negative pole of described forward exciting controllable silicon and the trigger electrode according to claim 1 or 2 described permanent-magnet double steady-state contactor pulse excitation circuits.
5,, it is characterized in that described forward exciting controllable silicon and coil are other in parallel in order to keep the resistance of discharge voltage according to claim 1 or 2 described permanent-magnet double steady-state contactor pulse excitation circuits.
6,, it is characterized in that described coil two ends the 3rd piezo-resistance in parallel according to claim 1 or 2 described permanent-magnet double steady-state contactor pulse excitation circuits.
7,, it is characterized in that other resistance respectively in parallel of electric capacity of described charge-discharge circuit according to claim 1 or 2 described permanent-magnet double steady-state contactor pulse excitation circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200311477U CN201171023Y (en) | 2008-01-29 | 2008-01-29 | Pulse energizing circuit for permanent magnet type bistable contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200311477U CN201171023Y (en) | 2008-01-29 | 2008-01-29 | Pulse energizing circuit for permanent magnet type bistable contactor |
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| Publication Number | Publication Date |
|---|---|
| CN201171023Y true CN201171023Y (en) | 2008-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200311477U Expired - Fee Related CN201171023Y (en) | 2008-01-29 | 2008-01-29 | Pulse energizing circuit for permanent magnet type bistable contactor |
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| Country | Link |
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| CN (1) | CN201171023Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109308977A (en) * | 2017-07-26 | 2019-02-05 | 施耐德电器工业公司 | Controllable current switchgear and electric component including the switchgear |
-
2008
- 2008-01-29 CN CNU2008200311477U patent/CN201171023Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109308977A (en) * | 2017-07-26 | 2019-02-05 | 施耐德电器工业公司 | Controllable current switchgear and electric component including the switchgear |
| CN109308977B (en) * | 2017-07-26 | 2022-08-05 | 施耐德电器工业公司 | Controllable current switching device and electrical assembly comprising such a switching device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081224 Termination date: 20140129 |