CN207800496U - A kind of D.C. contactor electric energy-saving conversion equipment - Google Patents
A kind of D.C. contactor electric energy-saving conversion equipment Download PDFInfo
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- CN207800496U CN207800496U CN201721883862.9U CN201721883862U CN207800496U CN 207800496 U CN207800496 U CN 207800496U CN 201721883862 U CN201721883862 U CN 201721883862U CN 207800496 U CN207800496 U CN 207800496U
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Abstract
The utility model is related to a kind of coil control devices of D.C. contactor, and in particular to a kind of D.C. contactor electric energy-saving conversion equipment.Circuit is by being arranged a RC delay circuit, increase high current in circuit passes through the time, coil is set to be adsorbed with armature more firm, after the shunt capacitance group in RC delay circuits is fully charged, shunt capacitance group open circuit, metal-oxide-semiconductor switch is closed, electric current flows through contactor coil by power supply in circuit, passing through economy resistance and be grounded, the big resistance value of economy resistance makes the electric current in circuit reduce, to reduce the power of contactor coil.The service life of contactor is extended, energy saving to a greater extent, system is simpler, smallerization, lightweight.
Description
Technical field
The utility model is related to a kind of coil control devices of D.C. contactor, and in particular to a kind of D.C. contactor electronics
Energy-saving conversion device.
Background technology
It is energy saving increasingly by domestic and international contactor user extensive concern, especially in railway locomotive industry.Currently, in the market
There are two types of main power save modes：One is by using double winding coil, additional one group of normally-closed contact or sacrifice contactor
The one group of normally closed auxiliary contact of itself is as change-over switch, to reach energy-efficient purpose.This method i.e. increase coil winding at
This so that contactor manufacturing process is complicated, increases contactor volume, meanwhile, the normally closed auxiliary contact for sacrificing contactor itself is made
For the change-over switch of electromagnetic converting system, bring inconvenience in use to customer.Another kind is entirely by with conversion function
Electronic module reaches energy-efficient purpose to the control of contactor coil, and this method control accuracy is high, but due to needing using a large amount of
Component, circuit design is relative complex, to affect the reliability of Electromagnetic System of Contactor.
Utility model content
In order to overcome the shortcomings of existing D.C. contactor coil control device, the utility model proposes a kind of contacts of direct current
Device electric energy-saving conversion equipment.
The solution of the utility model is as follows：
A kind of D.C. contactor electric energy-saving conversion equipment, including electric energy-saving module, economy resistance and externally fed
Circuit, the electric energy-saving module include the first circuit, second servo loop, tertiary circuit；
Wherein：
Setting DC voltage input (anode), contactor coil, diode D2 and metal-oxide-semiconductor is sequentially connected in series in first circuit to open
Powered-down road；
It is sequentially connected in series setting DC voltage in second servo loop and inputs (anode), diode D1, the first current-limiting resistance, electricity in parallel
Appearance group, resistance R6 and auxiliary switch control circuit；
Tertiary circuit is that a branch is also separated between the first current-limiting resistance and shunt capacitance group through water conservancy diversion diode D5
It is connected to the anode of diode D1, the electric discharge for accelerating shunt capacitance group in system cut-off；
The metal-oxide-semiconductor switching circuit includes a metal-oxide-semiconductor or the metal-oxide-semiconductor of multiple parallel connections, between the grid and source electrode of metal-oxide-semiconductor
The auxiliary switch control circuit in parallel, and source electrode ground connection (power cathode), the drain electrode of metal-oxide-semiconductor connect with the cathode of diode D2
It connects；The auxiliary switch control circuit is the structure of capacitance C2, resistance R5 and zener diode ZD1 three's parallel connection；
With capacitance group charging complete, metal-oxide-semiconductor switching circuit is closed, and the economy resistance connects to be formed with contactor coil
Keep circuit, the node between the termination contactor coil and diode D2 of economy resistance, the other end ground connection of economy resistance
(power cathode).
Based on above scheme, the utility model also further makees following optimization：
A branch is also divided between shunt capacitance group and resistance R6 through the second current limliting, RC loop resistances ground connection (power supply the moon
Pole).
The both ends of shunt capacitance group and the second current-limiting resistance are parallel with zener diode ZD2.
First current-limiting resistance is that resistance R1 and resistance R7 is in series.
One unidirectional TVS pipe D6 of contactor coil both ends parallel connection, one varistor RT1 of DC power supply both ends parallel connection,
Sustained diode 3.
A branch is also separated between resistance R1 and resistance R7 is grounded (power cathode) through capacitance C1, resistance R4 and capacitance
C1 is in parallel.
It also sets up varistor RT2 and reverse connecting protection diode D4 is connected in parallel on the both ends of the economy resistance respectively.
The externally fed circuit is a DC power supply.
The utility model has the advantages that：
1, it is brief electronic switch by traditional mechanical switch switch transition, reliability and operation lifetime obtain prodigious carry
It rises.
2, the conversion functional module replacement cycle of contactor product was extended to 2 to 3 years by original 1 year, maintenance cost
It is greatly lowered.
3, the new function module course of work does not need additional driving part, and the complexity of system reduces, and installation space is big
It is big to reduce, be conducive to product miniaturization, light-weighted optimization.
Description of the drawings
Fig. 1 is the circuit of the utility model；
Fig. 2 is the externally fed circuit of the utility model.
Specific implementation mode
As shown in Figure 1, the electric energy-saving module of the utility model includes contactor coil, diode D1, diode D2, two
The enhanced metal-oxide-semiconductor Q1 of pole pipe D5, capacitance C2, capacitance C3, capacitance C4, capacitance C5, zener diode ZD1, N-channel, N-channel enhancing
Type metal-oxide-semiconductor Q2, resistance R1, resistance R2, resistance R3, resistance R7, resistance R5, R8, R9, one termination power of coil, another termination two
The anode of pole pipe D2；The anode of one terminating diode D2 of economy resistance, the other end are grounded (power cathode)；Diode D2 anodes connect
Coil and economy resistance, cathode connect the drain electrode of Q1 and Q2；Diode D1 anodes connect power supply, cathode connect with R1, R7 after with two poles
Pipe D5 is in parallel, and D5 cathodes connect power supply, and anode meets capacitance C3, C4, C5；Capacitance C3, C4, C5 are in parallel；Resistance R8, R9 series connection and and R6
Parallel connection, resistance R8 mono- terminate C3, C4, C5, another terminating resistor R9, and the resistance R9 other ends are grounded (power cathode)；Voltage-stabiliser tube ZD1
Plus earth (power cathode), cathode meet R6, and capacitance C2, resistance R5 are in parallel with voltage-stabiliser tube ZD1, another termination capacitors of resistance R6
C3、C4、C5；Resistance R2 mono- terminates metal-oxide-semiconductor Q2 grids, and other end connects ZD1 cathodes；Resistance R3 mono- terminates metal-oxide-semiconductor Q1 grids, separately
One termination ZD1 cathodes；The source electrode ground connection (power cathode) of metal-oxide-semiconductor Q1；The source electrode ground connection (power cathode) of metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q1
Drain electrode connect the drain electrode of metal-oxide-semiconductor Q2.
One unidirectional TVS pipe D6 of contactor coil both ends parallel connection, in both ends of power varistor TR1, an afterflow in parallel
The anode of diode D3, filter capacitor C1 and resistance R4, unidirectional TVS pipe D6 connect the anode of diode D2, and cathode connects power supply；It is pressure-sensitive
Mono- termination powers of resistance TR1, the other end are grounded (power cathode), and such design can provide for system to be stablized, is reliable electric
Influence of the power-supply fluctuation to control circuit below is reduced in source.
Economy resistance both ends one varistor TR2 of parallel connection and sustained diode 4, the one end varistor TR2 ground connection (electricity
Source cathode), another terminating diode D2 anodes；4 cathode of sustained diode connects diode D2 anodes, and (power supply is cloudy for plus earth
Pole), after shunt capacitance C3, C4, C5 charging complete, circuit enters hold mode, accesses moment in economy resistance, can inhibit
The acute variation of economy resistance both end voltage caused by current break, causes to damage to internal circuit device.
Voltage-stabiliser tube ZD2 plus earths (power cathode), cathode meet capacitance C3, C4, C5, connect zener diode ZD2 herein
The fluctuation of voltage when being to inhibit charging avoids damage component and influences control accuracy.
The detailed method of operation of device is as follows：
When circuit is in the conduction state, first circuit of the power external circuit Jing Guo system is short-circuit by economy resistance, electricity
Stream is divided into two-way after entering system, all the way current diode D1, resistance R1, R7, is shunt capacitance C3, C4, C5 charging, and simultaneously
It charges for C2, with the raising of the both ends C2 potential, metal-oxide-semiconductor Q1, Q2 conducting, in addition electric current flows through coil, diode D2 streams all the way
Enter the drain electrode of metal-oxide-semiconductor Q1, Q2, electric current enters after metal-oxide-semiconductor Q1, Q2 through source electrode ground connection (power cathode) outflow, forming circuit；When
When system is in hold mode, after shunt capacitance C3, C4, C5 charging complete, capacitance C2 slowly discharges so that metal-oxide-semiconductor Q1, Q2 by
Step is closed, after metal-oxide-semiconductor Q1, Q2 are closed, the no longer short-circuit economy resistance of external circuit of power supply, and economy resistance access system, this
When electric current pass through after coil, economy resistance be grounded (power cathode), formed keep circuit；After system cut-off, shunt capacitance C3,
C4, C5 discharge, and electric current is grounded (power cathode) by diode D5, D1, resistance R1, resistance R4.
Claims (8)
1. a kind of D.C. contactor electric energy-saving conversion equipment, it is characterised in that：Including electric energy-saving module, economy resistance and
Externally fed circuit；
The electric energy-saving module includes the first circuit, second servo loop, tertiary circuit；
Wherein：
The input of setting DC voltage, contactor coil, diode D2 and metal-oxide-semiconductor switching circuit are sequentially connected in series in first circuit；
The input of setting DC voltage, diode D1, the first current-limiting resistance, shunt capacitance group, resistance are sequentially connected in series in second servo loop
R6 and auxiliary switch control circuit；
Tertiary circuit is also to separate a branch between the first current-limiting resistance and shunt capacitance group to be connected to through water conservancy diversion diode D5
The anode of diode D1, the electric discharge for accelerating shunt capacitance group in down circuitry；
The metal-oxide-semiconductor switching circuit includes a metal-oxide-semiconductor or the metal-oxide-semiconductor of multiple parallel connections, in parallel between the grid and source electrode of metal-oxide-semiconductor
The auxiliary switch control circuit, and source electrode is grounded, the drain electrode of metal-oxide-semiconductor is connect with the cathode of diode D2；The auxiliary switch
Control circuit is the structure of capacitance C2, resistance R5 and zener diode ZD1 three's parallel connection；
The economy resistance, which connects to be formed with contactor coil, keeps circuit, a termination contactor coil of economy resistance and two poles
Node between pipe D2, the other end ground connection of economy resistance.
2. a kind of D.C. contactor electric energy-saving conversion equipment according to claim 1, it is characterised in that：The electricity in parallel
A branch is also divided between appearance group and resistance R6 to be grounded through the second current limliting, RC loop resistances.
3. a kind of D.C. contactor electric energy-saving conversion equipment according to claim 2, it is characterised in that：The electricity in parallel
The both ends of appearance group and the second current-limiting resistance are parallel with zener diode ZD2.
4. a kind of D.C. contactor electric energy-saving conversion equipment according to claim 3, it is characterised in that：First limit
Leakage resistance is that resistance R1 and resistance R7 is in series.
5. a kind of D.C. contactor electric energy-saving conversion equipment according to claim 1, it is characterised in that：The contactor
One unidirectional TVS pipe D6 of coil both ends parallel connection, in one varistor RT1 of DC power supply both ends parallel connection, sustained diode 3.
6. a kind of D.C. contactor electric energy-saving conversion equipment according to claim 4, it is characterised in that：Resistance R1 with
It also separates a branch between resistance R7 to be grounded through capacitance C1, resistance R4 is in parallel with capacitance C1.
7. a kind of D.C. contactor electric energy-saving conversion equipment according to claim 1, it is characterised in that：It also sets up pressure-sensitive
Resistance RT2 and reverse connecting protection diode D4 is connected in parallel on the both ends of the economy resistance respectively.
8. a kind of D.C. contactor electric energy-saving conversion equipment according to claim 1, it is characterised in that：The outside
Power supply circuit is a DC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721883862.9U CN207800496U (en) | 2017-12-28 | 2017-12-28 | A kind of D.C. contactor electric energy-saving conversion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721883862.9U CN207800496U (en) | 2017-12-28 | 2017-12-28 | A kind of D.C. contactor electric energy-saving conversion equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207800496U true CN207800496U (en) | 2018-08-31 |
Family
ID=63279925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721883862.9U Active CN207800496U (en) | 2017-12-28 | 2017-12-28 | A kind of D.C. contactor electric energy-saving conversion equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207800496U (en) |
-
2017
- 2017-12-28 CN CN201721883862.9U patent/CN207800496U/en active Active
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