CN204230158U - AC/DC contactor power module - Google Patents
AC/DC contactor power module Download PDFInfo
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- CN204230158U CN204230158U CN201420588991.5U CN201420588991U CN204230158U CN 204230158 U CN204230158 U CN 204230158U CN 201420588991 U CN201420588991 U CN 201420588991U CN 204230158 U CN204230158 U CN 204230158U
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Abstract
A kind of AC/DC contactor power module, the high-low voltage change-over circuit, output circuit, switch switching circuit and the contactor that there is power supply, the first branch road, the second branch road and connect successively; After first branch road and the second branch circuit parallel connection, two ends connect the output of power supply and the input of high-low voltage change-over circuit respectively; First branch road comprises Surge suppression filter circuit, power factor correction circuits, high frequency switch power and the low-power consumption holding circuit of connecting successively; Second branch road comprises the first buffer circuit, voltage detecting circuit, microprocessor and second buffer circuit of connecting successively; Be connected with the input of the input of voltage detecting circuit, the input of microprocessor and switch switching circuit respectively after the output of high frequency switch power exports the power supply of mutual electrical isolation; The output of the first buffer circuit connects the input of high-low voltage change-over circuit and the input of switch switching circuit respectively.The utility model has the features such as energy-conserving and environment-protective, long service life, adhesive be reliable.
Description
Technical field
The utility model relates to technical field of electric device control, it is the necessary equipment in the power distribution equipments such as electric power, metallurgy, industrial and mining enterprises, meet voltage shock avoiding, energy-saving and environmental protection policy that country is badly in need of greatly developing, particularly a kind of intelligent AC/DC contactor power module.
Background technology
The contactor extensively adopted in the market does not add controller.This type of contactor often because line voltage is unstable, time and suck, Shi Ersong inhales or does not inhale.So, great arcing and damage can be brought to contacts of contactor, even can therefore strengthen the probability burning contactor line bag, thus greatly shorten the useful life of contactor.
The contact of contactor is that the line bag energising generation magnetic field of being abutted against tentaculum itself completely realizes.So the electric energy of more than 100 watt consumed by class contactor because of the eddy current loss of line bag, not only waste a large amount of electric energy in vain, send larger drone hum simultaneously, form larger noise pollution.
Also indivedual product adopting AC/DC contactor control module is had in the market, but this series products needs to prepare the electricity-saving controller of Multiple Type in order to deal with different applied environments, and the place that working range, electric property and stability still have much room for improvement.
In addition, the various A.C. contactors used in the market are nearly all that AC220V or AC380V50Hz powers, because alternating current is by the initial phase of Symmetrical, and amplitude, the equal sine wave composition of frequency.There is zero crossing in sine wave.A.C. contactor itself is an inductive load, and power factor is lower.
Summary of the invention
The purpose of this utility model is the defect overcoming prior art existence, provides a kind of energy-conserving and environment-protective, long service life, safe and reliable, adhesive reliable, has the AC/DC contactor power module of defencive function.
The technical scheme realizing the utility model object is: a kind of AC/DC contactor power module, the high-low voltage change-over circuit, output circuit, switch switching circuit and the contactor that have power supply, the first branch road, the second branch road and connect successively; After described first branch road and the second branch circuit parallel connection, two ends connect the output of power supply and the input of high-low voltage change-over circuit respectively; The described input of high-low voltage change-over circuit is connected with the output of power supply; Surge suppression filter circuit, power factor correction circuits, high frequency switch power and the low-power consumption holding circuit composition that described first route is connected successively; The first buffer circuit, voltage detecting circuit, microprocessor and the second buffer circuit composition that described second route is connected successively; Be connected with the input of the input of voltage detecting circuit, the input of microprocessor and switch switching circuit respectively after the output of described high frequency switch power exports the power supply of mutual electrical isolation; The output of described first buffer circuit is connected with the input of high-low voltage change-over circuit and the input of switch switching circuit respectively.
The output of power supply described in technique scheme is connected with the input of the first buffer circuit by after instrument transformer electromagnetic isolation.
High frequency switch power described in technique scheme is pulse-width modulation circuit, and high frequency switch power comprises the branch road that four groups include optocoupler, two NPN triodes and a PNP triode composition; Described optocoupler exports the base stage of termination the one NPN triode; The collector electrode of a described NPN triode connects the base stage of PNP triode and the 2nd NPN triode simultaneously, and base stage connects the collector electrode of the 2nd NPN triode, and emitter connects the collector electrode of PNP triode; The emitter of described PNP triode is connected with the emitter of the 2nd NPN triode.
Surge suppression filter circuit described in technique scheme comprises rectifier diode D6, Transient Suppression Diode D8, transformer T17 and fast recovery diode; The input of transformer T17 is connect after described Transient Suppression Diode D8 connects with rectifier diode D6; Each coil two ends of the output of transformer T17 connect a fast recovery diode respectively.
Switch switching circuit described in technique scheme comprises triode T13, T14, T15, T16 and rectifier diode D2, D3, D4, D5; Described rectifier diode D2, D4 are connected into the 3rd branch road; The two ends of the 3rd branch road are connected in parallel on after described rectifier diode D3, D5 series connection; Described triode T13, T14, T15, T16 collector and emitter separately connects negative pole and the positive pole of corresponding rectifier diode respectively.
Microprocessor described in technique scheme is AT89C2052 processor, and microprocessor is connected to crystal oscillating circuit; Described crystal oscillating circuit comprises crystal oscillator Y1 and electric capacity C2, C3.
Power supply described in technique scheme is AC220 ~ 380V.
After adopting technique scheme, the utility model has following positive effect:
(1) power of A.C. contactor line bag is all at 100 ~ 200W, and adopt the utility model that original contactor power saving effect can be made up to more than 90%, power savings clearly.
(2) adopt the utility model can solve because A.C. contactor uses 50Hz alternating current, can audio oscillation be produced while electric current flows through coil, send drone noise, bring infringement to the health of people; And due to the power consumption of line bag large, temperature such as also to rise at the problem thereupon.Solve the temperature rise that general A.C. contactor can produce more than 50 DEG C in working for a long time, when summer environment temperature reaches 40 DEG C, the temperature of line bag even can be elevated to more than 100 DEG C, line bag is in high temperature for a long time and works, its aging speed is accelerated, even can burn line bag, substantially reduce the useful life of A.C. contactor, also can bring a lot of potential safety hazard simultaneously, also bring very large thermal effect to environment, avoid bringing many unnecessary losses to enterprise.Stream work is without any audio-frequency noise, and controller is low-voltage to line bag, and small area analysis operation source, the temperature rise of line bag is almost nil, and the life-span of line bag extends greatly.
(3) operation voltage of the present utility model all can set as required, and everything is all by Microprocessor S3C44B0X, and action is accurate, and reliability is high.
(4) after A.C. contactor uses the utility model, use line voltage greatly loose, 220V voltage of solving over is down to about 170V just normally adhesive can not even burn the problem of line bag, can from the reliable adhesive of 150V ~ 420V by pick-up voltage of the present utility model, and ME for maintenance can in 50V ~ 500V reliably working.
(5) the utility model is controlled by microprocessor high speed detection voltage, so can provide as overvoltage protection, under-voltage protection, shakes the defencive functions such as electric protection.
Accompanying drawing explanation
In order to make content of the present utility model more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is action control sequential chart of the present utility model;
Fig. 3 is sampled voltage oscillogram of the present utility model;
Fig. 4 is sampling principle of the present utility model and arithmograph;
Fig. 5 is the circuit diagram of Surge suppression filter circuit of the present utility model;
Fig. 6 is the circuit diagram of high frequency switch power of the present utility model;
Fig. 7 is the circuit diagram of switch switching circuit of the present utility model;
Fig. 8 is the schematic diagram of microprocessor of the present utility model;
Attached number in the figure is: power supply 1, high-low voltage change-over circuit 2, output circuit 3, switch switching circuit 4, contactor 5, Surge suppression filter circuit 6, power factor correction circuits 7, high frequency switch power 8, low-power consumption holding circuit 9, first buffer circuit 10, voltage detecting circuit 11, microprocessor 12, second buffer circuit 13.
Embodiment
(embodiment 1)
See Fig. 1, Fig. 5 to Fig. 8, the utility model has power supply 1, first branch road, the second branch road and the high-low voltage change-over circuit 2 of connecting successively, output circuit 3, switch switching circuit 4 and contactor 5; After first branch road and the second branch circuit parallel connection, two ends connect the output of power supply 1 and the input of high-low voltage change-over circuit 2 respectively; Power supply 1 is AC220 ~ 380V; The input of high-low voltage change-over circuit 2 is connected with the output of power supply 1; Surge suppression filter circuit 6, power factor correction circuits 7, high frequency switch power 8 and low-power consumption holding circuit 9 that first route is connected successively form; The first buffer circuit 10, voltage detecting circuit 11, microprocessor 12 and the second buffer circuit 13 that second route is connected successively form; Be connected with the input of the input of voltage detecting circuit 11, the input of microprocessor 12 and switch switching circuit 4 respectively after the output of high frequency switch power 8 exports the power supply of mutual electrical isolation; The output of the first buffer circuit 10 is connected with the input of high-low voltage change-over circuit 2 and the input of switch switching circuit 4 respectively.The output of power supply 1 is connected with the input of the first buffer circuit 10 by after instrument transformer electromagnetic isolation.Microprocessor 12 is AT89C2052 processor, and microprocessor 12 is connected to crystal oscillating circuit; Crystal oscillating circuit comprises crystal oscillator Y1 and electric capacity C2, C3.
High frequency switch power 8 is pulse-width modulation circuit, and high frequency switch power 8 comprises the branch road that four groups include optocoupler, two NPN triodes and a PNP triode composition; Optocoupler exports the base stage of termination the one NPN triode; The collector electrode of the one NPN triode connects the base stage of PNP triode and the 2nd NPN triode simultaneously, and base stage connects the collector electrode of the 2nd NPN triode, and emitter connects the collector electrode of PNP triode; The emitter of PNP triode is connected with the emitter of the 2nd NPN triode.
Surge suppression filter circuit 6 comprises rectifier diode D6, Transient Suppression Diode D8, transformer T17 and fast recovery diode; Transient Suppression Diode D8 connects the input of transformer T17 after connecting with rectifier diode D6; Each coil two ends of the output of transformer T17 connect a fast recovery diode respectively.
Switch switching circuit 4 comprises triode T13, T14, T15, T16 and rectifier diode D2, D3, D4, D5; Rectifier diode D2, D4 are connected into the 3rd branch road; The two ends of the 3rd branch road are connected in parallel on after rectifier diode D3, D5 series connection; Triode T13, T14, T15, T16 collector and emitter separately connects negative pole and the positive pole of corresponding rectifier diode respectively.
Operation principle of the present utility model is: microprocessor 12 compares the starting resistor of input voltage and setting, when input voltage is greater than the starting resistor of setting, microprocessor 12 controls high-low voltage change-over circuit 2 output HIGH voltage, control switch commutation circuit 4 is connected simultaneously, high voltage makes contactor 5 adhesive by the line bag of contactor 5, after contactor 5 adhesive, microprocessor 12 controls level shifter circuit 2 immediately and high pressure is turned off, and low-power consumption holding circuit 9 is accessed electric 3 tunnels of output, output circuit 3 accesses switch switching circuit 4, switch switching circuit 4 keeps voltage input contactor 5 line bag low-power consumption, keep in touch device 5 attracting state, see Fig. 2, utilize the characteristic of the high-speed high stable of microprocessor 12, the time of accurate control adhesive action, the dynamic suction iron of contactor 5 can produce elastic collision time dynamic to quiet suction Railway transportation, adhesive is extended operate time, main contacts produces the loss that harmful shake increases contact, the feature mode by experiment of the high speed high stable of microprocessor 12 is utilized to draw best start-up time, making to inhale iron, in the process of motion, experience the process of acceleration-deceleration-adhesive just right, not only reliable quick pick-up but also greatly eliminate harmful shake, contact endurance is increased greatly.Output circuit 3 li comprises high-voltage rectifying, and high pressure repercussion is protected, high-low pressure conversion freewheeling circuit.After contactor 5 adhesive, microprocessor 12 compares input voltage with setting drop away voltage, when input voltage is lower than drop away voltage, microprocessor 12 control switch commutation circuit 4 cuts off output makes contactor 12 thread off immediately, when input voltage is higher than drop away voltage, microprocessor 12 compares input voltage with the rolling piezoelectric voltage of setting, when input voltage is lower than the rolling piezoelectric voltage value set, microprocessor 12 starts timing, within the time that timing reaches setting, input voltage is always lower than the rolling piezoelectric voltage of setting, microprocessor 12 control switch commutation circuit 4 is cut off and is exported, contactor 5 is threaded off.
High frequency switch power 8 is pulse-width modulation circuit, export in circuit is that main load is from this group output feedack voltage signal to power supply control chip, that constant voltage exports, power invariability, the pulse duration that control chip exports is just constant, thus make low-power consumption holding circuit 9 power output constant, be used on different contactors 5, because the D.C. resistance of contactor 5 line bag is different, this group output voltage just has different falling, the utility model can be used on various contactor 5, and contactor 5 adhesive being unlikely to line bag resistance large is not tight, what line bag resistance was little causes line bag electric current excessive and reduces electric energy.
Voltage detecting circuit of the present utility model does not adopt common AC-DC conversion but adopts AC signal to superpose a suitable DC component and makes the minimum value of alternating current component be positive positive level on hardware, sees Fig. 3; Then utilize the principle of Sampling Theorem (sample frequency is greater than the 2 times of extraction that just can can't harm being sampled signal highest frequency and is sampled signal) signal discrete process, see Fig. 4, discrete processes operational formula is:
High-speed sampling again, calculates the method for the data separate mathematics obtained the measured value of voltage.This method hardware circuit is succinct, and reliability is very high, and the data utilizing the method for mathematics to obtain are accurate, and the reliability of product and accuracy are improved greatly.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (7)
1. an AC/DC contactor power module, has power supply (1), the first branch road, the second branch road and the high-low voltage change-over circuit (2) of connecting successively, output circuit (3), switch switching circuit (4) and contactor (5); After described first branch road and the second branch circuit parallel connection, two ends connect the output of power supply (1) and the input of high-low voltage change-over circuit (2) respectively; The input of described high-low voltage change-over circuit (2) is connected with the output of power supply (1); It is characterized in that: Surge suppression filter circuit (6), power factor correction circuits (7), high frequency switch power (8) and low-power consumption holding circuit (9) composition that described first route is connected successively; The first buffer circuit (10), voltage detecting circuit (11), microprocessor (12) and the second buffer circuit (13) composition that described second route is connected successively; Be connected with the input of the input of voltage detecting circuit (11), the input of microprocessor (12) and switch switching circuit (4) respectively after the output of described high frequency switch power (8) exports the power supply of mutual electrical isolation; The output of described first buffer circuit (10) is connected with the input of high-low voltage change-over circuit (2) and the input of switch switching circuit (4) respectively.
2. AC/DC contactor power module according to claim 1, is characterized in that: the output of described power supply (1) is connected with the input of the first buffer circuit (10) by after instrument transformer electromagnetic isolation.
3. AC/DC contactor power module according to claim 2, it is characterized in that: described high frequency switch power (8) is pulse-width modulation circuit, high frequency switch power (8) comprises the branch road that four groups include optocoupler, two NPN triodes and a PNP triode composition; Described optocoupler exports the base stage of termination the one NPN triode; The collector electrode of a described NPN triode connects the base stage of PNP triode and the 2nd NPN triode simultaneously, and base stage connects the collector electrode of the 2nd NPN triode, and emitter connects the collector electrode of PNP triode; The emitter of described PNP triode is connected with the emitter of the 2nd NPN triode.
4. AC/DC contactor power module according to claim 2, is characterized in that: described Surge suppression filter circuit (6) comprises rectifier diode D6, Transient Suppression Diode D8, transformer T17 and fast recovery diode; The input of transformer T17 is connect after described Transient Suppression Diode D8 connects with rectifier diode D6; Each coil two ends of the output of transformer T17 connect a fast recovery diode respectively.
5. AC/DC contactor power module according to claim 2, is characterized in that: described switch switching circuit (4) comprises triode T13, T14, T15, T16 and rectifier diode D2, D3, D4, D5; Described rectifier diode D2, D4 are connected into the 3rd branch road; The two ends of the 3rd branch road are connected in parallel on after described rectifier diode D3, D5 series connection; Described triode T13, T14, T15, T16 collector and emitter separately connects negative pole and the positive pole of corresponding rectifier diode respectively.
6. AC/DC contactor power module according to claim 2, is characterized in that: described microprocessor (12) is AT89C2052 processor, and (12) are connected to crystal oscillating circuit with microprocessor; Described crystal oscillating circuit comprises crystal oscillator Y1 and electric capacity C2, C3.
7. AC/DC contactor power module according to claim 1, is characterized in that: described power supply (1) is AC220 ~ 380V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420588991.5U CN204230158U (en) | 2014-10-11 | 2014-10-11 | AC/DC contactor power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420588991.5U CN204230158U (en) | 2014-10-11 | 2014-10-11 | AC/DC contactor power module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204230158U true CN204230158U (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420588991.5U Expired - Fee Related CN204230158U (en) | 2014-10-11 | 2014-10-11 | AC/DC contactor power module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204230158U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105551885A (en) * | 2015-12-31 | 2016-05-04 | 广州金升阳科技有限公司 | Energy-saving circuit for contactor |
| CN108140510A (en) * | 2015-10-15 | 2018-06-08 | 伊顿智能动力有限公司 | For the control device of the electromagnetic driver of switchgear |
-
2014
- 2014-10-11 CN CN201420588991.5U patent/CN204230158U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108140510A (en) * | 2015-10-15 | 2018-06-08 | 伊顿智能动力有限公司 | For the control device of the electromagnetic driver of switchgear |
| CN105551885A (en) * | 2015-12-31 | 2016-05-04 | 广州金升阳科技有限公司 | Energy-saving circuit for contactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20151011 |
|
| EXPY | Termination of patent right or utility model |