CN104270010A - Contactor power supply device - Google Patents
Contactor power supply device Download PDFInfo
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- CN104270010A CN104270010A CN201410466357.9A CN201410466357A CN104270010A CN 104270010 A CN104270010 A CN 104270010A CN 201410466357 A CN201410466357 A CN 201410466357A CN 104270010 A CN104270010 A CN 104270010A
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- Prior art keywords
- circuit
- contactor
- voltage
- power
- supply unit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Keying Circuit Devices (AREA)
Abstract
The invention discloses a contactor power supply device. The device comprises a surge suppression power filter circuit, a power factor calibrating circuit, a high-frequency switch power supply, a high-voltage and low-voltage switching circuit, a first isolating circuit, a second isolating circuit, a low-power-consumption maintaining circuit, a microprocessor, a voltage detecting circuit, an output circuit, a switching circuit and a contactor. In this way, the reliability of the contactor is improved greatly, the service life of the contactor is prolonged, voltage sudden drop or loss is prevented, energy is saved, environmental friendliness is realized, the electricity saving rate reaches over 90%, silent working is realized, noise pollution is reduced, and the device is necessary for power distribution units used in electric, metallurgy and industry and mining enterprises and meets the state policies for voltage sudden drop or loss prevention, energy saving and environmental friendliness which need to be developed energetically.
Description
Technical field
The invention belongs to the technical field of appliance controller, particularly relate to a kind of contactor supply unit, be applicable to the AC/DC contactor of various model, be also applicable to the electromagnetic mechanisms such as electromagnetically operated valve, is the necessary equipment in the power distribution equipments such as electric power, metallurgy, industrial and mining enterprises.
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 prior art, 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 contactors used in prior art are nearly all that AC220V or AC380V 50Hz powers, because alternating current is by the initial phase of Symmetrical, 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 technical problem that the present invention mainly solves is to provide a kind of contactor supply unit, substantially increase the reliability of contactor, extend the useful life of contactor, there is the performance of voltage shock avoiding, energy-conservation and environmental protection, power saving rate reaches more than 90%, is again quiet work, decreases noise pollution, be 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.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of contactor supply unit, comprise Surge suppression electric source filter circuit, power factor correction circuits, high frequency switch power, high-low pressure commutation circuit, first buffer circuit, second buffer circuit, low-power consumption holding circuit, microprocessor, voltage detecting circuit, output circuit, switch switching circuit and contactor, AC power inputs the input of Surge suppression electric source filter circuit respectively, the input of high-low pressure commutation circuit and by the first buffer circuit access voltage detecting circuit, the output access power factor calibration circuit of described Surge suppression electric source filter circuit, the input of described power factor correction circuits access high frequency switch power, the output of described high frequency switch power is respectively to voltage detecting circuit, microprocessor, low-power consumption holding circuit and switch switching circuit are powered, described voltage detecting circuit access microprocessor, described microprocessor accesses high-low pressure commutation circuit and switch switching circuit respectively by the second buffer circuit, described low-power consumption holding circuit is respectively by high-low pressure commutation circuit and output circuit access switch switching circuit, and described switch switching circuit accesses contactor.
In a preferred embodiment of the present invention, described AC power is 220V-380V.
In a preferred embodiment of the present invention, described high frequency switch power exports the power supply of the 3 mutual electrical isolation in road respectively, comprise first via power supply, the second road power supply and the 3rd road circuit, described first via power supply is powered to voltage detecting circuit and microprocessor, the second described road power supply is powered to low-power consumption holding circuit, and described three-way power is powered to switch switching circuit.
In a preferred embodiment of the present invention, described output circuit comprises high-voltage rectifying, high pressure repercussion protection, high-low pressure conversion freewheeling circuit.
In a preferred embodiment of the present invention, described contactor supply unit is also set with operation voltage, and described operation voltage comprises starting resistor, drop away voltage and piezoelectric voltage of shaking.
In a preferred embodiment of the present invention, described operation voltage is controlled by microprocessor.
In a preferred embodiment of the present invention, the operating sustain voltage of described contactor is 50-500V, and work pick-up voltage is 150-420V.
In a preferred embodiment of the present invention, described contactor contactor is A.C. contactor or D.C. contactor.
The invention has the beneficial effects as follows: contactor supply unit of the present invention, substantially increase the reliability of contactor, extend the useful life of contactor, there is the performance of voltage shock avoiding, energy-conservation and environmental protection, power saving rate reaches more than 90%, is again quiet work, decreases noise pollution, be 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.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, wherein:
Fig. 1 is the structured flowchart of a preferred embodiment of contactor supply unit of the present invention;
Fig. 2 is action control sequential chart;
Fig. 3 is sampled voltage oscillogram;
Fig. 4 is sampling principle and arithmograph.
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the embodiment of the present invention comprises:
A kind of contactor supply unit, comprises Surge suppression electric source filter circuit, power factor correction circuits, high frequency switch power, high-low pressure commutation circuit, first buffer circuit, second buffer circuit, low-power consumption holding circuit, microprocessor, voltage detecting circuit, output circuit, switch switching circuit and contactor, AC power inputs the input of Surge suppression electric source filter circuit respectively, the input of high-low pressure commutation circuit and by the first buffer circuit access voltage detecting circuit, the output access power factor calibration circuit of described Surge suppression electric source filter circuit, the input of described power factor correction circuits access high frequency switch power, the output of described high frequency switch power is respectively to voltage detecting circuit, microprocessor, low-power consumption holding circuit and switch switching circuit are powered, described voltage detecting circuit access microprocessor, described microprocessor accesses high-low pressure commutation circuit and switch switching circuit respectively by the second buffer circuit, described low-power consumption holding circuit is respectively by high-low pressure commutation circuit and output circuit access switch switching circuit, and described switch switching circuit accesses contactor.Wherein, described AC power is 220V-380V.
In above-mentioned, described contactor supply unit is also set with operation voltage, and described operation voltage is controlled by microprocessor.Wherein, described operation voltage comprises starting resistor, drop away voltage and piezoelectric voltage of shaking.
Further, described high frequency switch power exports the power supply of the 3 mutual electrical isolation in road respectively, comprise first via power supply, the second road power supply and the 3rd road circuit, described first via power supply is powered to voltage detecting circuit and microprocessor, the second described road power supply is powered to low-power consumption holding circuit, and described three-way power is powered to switch switching circuit.
Wherein, described output circuit comprises high-voltage rectifying, high pressure repercussion protection, high-low pressure conversion freewheeling circuit.
Further, described contactor contactor is A.C. contactor or D.C. contactor.Wherein, the operating sustain voltage of described contactor is 50-500V, and work pick-up voltage is 150-420V.
Operation principle: AC220V-380V accesses the input of Surge suppression electric source filter circuit, the output access power factor calibration circuit of Surge suppression electric source filter circuit, power factor correction circuits access high frequency switch power input, high frequency switch power exports the power supply of the 3 mutual electrical isolation in road, comprise first via power supply, second road power supply and the 3rd road circuit, described first via power supply is powered to voltage detecting circuit and microprocessor, the second described road power supply is powered to low-power consumption holding circuit, described three-way power is powered to switch switching circuit.AC220V-380V accesses high-low pressure commutation circuit and accesses voltage detecting circuit by the first buffer circuit, voltage detecting circuit access microprocessor, microprocessor the starting resistor of input voltage and setting to compare when input voltage is greater than the starting resistor of setting Microprocessor S3C44B0X high-low voltage commutation circuit output HIGH voltage simultaneously control switch commutation circuit connect, high voltage makes contactor adhesive by the line bag of contactor, after contactor adhesive, microprocessor controls high-low pressure commutation circuit immediately high pressure shutoff and low-power consumption maintenance voltage access output circuit, output circuit access switch switching circuit, switch switching circuit keeps voltage input contactor line bag to keep in touch device attracting state low-power consumption, high-voltage rectifying is comprised in output circuit, high pressure repercussion is protected, high-low pressure conversion freewheeling circuit.After contactor adhesive, microprocessor compares input voltage with the drop away voltage of setting, when input voltage is lower than drop away voltage, Microprocessor S3C44B0X switch switching circuit cuts off output makes contactor thread off immediately, when input voltage is higher than drop away voltage, microprocessor compares input voltage with the rolling piezoelectric voltage of setting, when input voltage is lower than the rolling piezoelectric voltage value set, microprocessor starts timing, within the time that timing reaches setting, input voltage is always lower than the rolling piezoelectric voltage of setting, and Microprocessor S3C44B0X switch switching circuit cuts off output makes contactor thread off.
The present invention's direct current replaces alternating current, inhales iron by moment high direct voltage contactable magnetisable device sound, keeps inhaling ferromagnetic field instead of originally with the adhesive of ac high-voltage maintenance iron core with DC low-voltage.With microprocessor high-speed sampling voltage, accurate control contactor operation voltage instead of original uncertain operation voltage.
The most general principle of the work of contactor is the suction of electromagnet and puts, and the direction of motion in equidirectional under the effect of the basic reason of the generation in the magnetic field electronics that to be intratomic move around atomic nucleus at electric field, there is indivisible contact in electric current and magnetic field.
Coil is inductive load, when the electric current in conductor changes, conductor inherently produces induced electromotive force, this electromotive force always hinders curent change original in conductor, the electromagnetic induction phenomenon that this electric current due to conductor itself changes and produces is self inductance, self inductance effect due to coil will form electric current and lag behind voltage, in other words electric current can not suddenly change, when the unexpected power-off of coil, coil externally can be released to the contrary electric energy of electric power polarity, this phenomenon of coil is called energy storage, closed-loop path is formed after iron core adhesive in contactor line bag, owing to being along with electric current does periodically change by the magnetic flux of iron core, in the loop that this is closed, there is induced electromotive force to produce, under the effect of this electromotive force, form eddy current, eddy current generates heat in the core which and causes the loss of energy, this loss is called eddy current loss, also iron loss is.Make use of the energy-storage function of coil, add that a little electric current compensate for eddy current loss, reach this specific function of magnetic field of keeping coil, achieve energy-conservation object.By experiment, AC power is at the coil of 100-150W, and can meet the eddy current loss of general iron core with the power of direct current about 4W, the magnetic field of hold-in winding is constant, thus reaches the reliable adhesive of A.C. contactor.
High frequency switch power is pulse-width modulation circuit, it is that main load is from this group output feedack voltage signal to power supply control chip that first via power supply exports, this group is that constant voltage exports, due to the power invariability on this road, the pulse duration that control chip exports is just constant, thus make low-power holding circuit i.e. the second road output power of power supply constant, be used on different contactors because the D.C. resistance of contactor line bag this group output voltage different just has different falling, can to use on various contactor and the contactor 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.
The circuit hardware of this supply unit not adopting common AC-DC conversion but adopts AC signal to superpose a suitable DC component makes the minimum value of alternating current component be that then positive positive level (see figure 3) utilizes 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 (Fig. 4) high-speed sampling again, the method for the data separate mathematics obtained is calculated 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 supply unit and accuracy are improved greatly.
This supply unit utilizes the characteristic of the high-speed high stable of microprocessor, accurately controls the time (energy namely needed for adhesive is shown in Fig. 2) of adhesive action.Elastic collision can be produced when the dynamic suction iron of contactor is dynamic to quiet suction Railway transportation time, adhesive is extended operate time, main contacts produces the loss that harmful shake increases contact, this supply unit utilizes the feature mode by experiment of the high speed high stable of microprocessor to draw to make best start-up time to be inhaled iron and in the process of motion, experiences the just right not only reliable quick pick-up of the process of acceleration-deceleration-adhesive but also greatly eliminate harmful shake, and contact endurance is increased greatly.
Contactor supply unit tool provided by the invention has the following advantages:
1, energy-conservation:
The power of A.C. contactor line bag is all at 100-200W, and adopt this patent new controller, original contactor power saving effect can be made up to more than 90%, and power savings clearly.
2, environmental protection, long service life:
Because A.C. contactor uses 50Hz alternating current, audio oscillation can be produced while electric current flows through coil, send drone noise, infringement is brought to the health of people, moreover due to the power consumption of line bag large, temperature also can rise thereupon, general A.C. contactor can produce the temperature rise of 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 very large thermal effect is brought to environment, many unnecessary losses are brought to enterprise, solve the problem completely after using supply unit, one, owing to being that DC operation is without any audio-frequency noise, two due to supply unit be low-voltage to line bag, small area analysis operation source, the temperature rise of line bag is almost nil, and the life-span of line bag extends greatly.
3, safe and reliable:
The operation voltage of supply unit all can set as required, and everything is all by Microprocessor S3C44B0X, and action is accurate, and reliability is high.
4, line voltage is loose:
After contactor uses this power module, use line voltage greatly loose, past 220V voltage is down to about 170V just normally adhesive can not even burn line bag, now can from the reliable adhesive of 150V-420V by this controller pick-up voltage, and ME for maintenance can in 50 V-500 V reliably working.
5, defencive function:
Undertaken controlling by microprocessor high speed detection voltage, so can provide as overvoltage protection, under-voltage protection, shakes the defencive functions such as electric protection.
Meanwhile, contactor supply unit of the present invention, can design arbitrarily the service behaviour of this product facility according to the specific requirement of user.Outward appearance, the novel structure of this supply unit are attractive in appearance, unique, and all aluminium alloy shell is sturdy and durable.
In sum, the contactor supply unit that the present invention discloses, substantially increase the reliability of contactor, extend useful life of contactor, have the performance of voltage shock avoiding, energy-conservation and environmental protection, power saving rate reaches more than 90%, again quiet work, decreasing noise pollution, is the necessary equipment in the power distribution equipments such as electric power, metallurgy, industrial and mining enterprises, meets voltage shock avoiding, energy-saving and environmental protection policy that country is badly in need of greatly developing.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (8)
1. a contactor supply unit, is characterized in that, comprises Surge suppression electric source filter circuit, power factor correction circuits, high frequency switch power, high-low pressure commutation circuit, first buffer circuit, second buffer circuit, low-power consumption holding circuit, microprocessor, voltage detecting circuit, output circuit, switch switching circuit and contactor, AC power inputs the input of Surge suppression electric source filter circuit respectively, the input of high-low pressure commutation circuit and by the first buffer circuit access voltage detecting circuit, the output access power factor calibration circuit of described Surge suppression electric source filter circuit, the input of described power factor correction circuits access high frequency switch power, the output of described high frequency switch power is respectively to voltage detecting circuit, microprocessor, low-power consumption holding circuit and switch switching circuit are powered, described voltage detecting circuit access microprocessor, described microprocessor accesses high-low pressure commutation circuit and switch switching circuit respectively by the second buffer circuit, described low-power consumption holding circuit is respectively by high-low pressure commutation circuit and output circuit access switch switching circuit, and described switch switching circuit accesses contactor.
2. contactor supply unit according to claim 1, is characterized in that, described AC power is 220V-380V.
3. contactor supply unit according to claim 1, it is characterized in that, described high frequency switch power exports the power supply of the 3 mutual electrical isolation in road respectively, comprise first via power supply, the second road power supply and the 3rd road circuit, described first via power supply is powered to voltage detecting circuit and microprocessor, the second described road power supply is powered to low-power consumption holding circuit, and described three-way power is powered to switch switching circuit.
4. contactor supply unit according to claim 1, is characterized in that, described output circuit comprises high-voltage rectifying, high pressure repercussion protection, high-low pressure conversion freewheeling circuit.
5. contactor supply unit according to claim 1, is characterized in that, described contactor supply unit is also set with operation voltage, and described operation voltage comprises starting resistor, drop away voltage and piezoelectric voltage of shaking.
6. contactor supply unit according to claim 1, is characterized in that, described operation voltage is controlled by microprocessor.
7. contactor supply unit according to claim 1, is characterized in that, the operating sustain voltage of described contactor is 50-500V, and work pick-up voltage is 150-420V.
8. contactor supply unit according to claim 1, is characterized in that, described contactor contactor is A.C. contactor or D.C. contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410466357.9A CN104270010A (en) | 2014-09-15 | 2014-09-15 | Contactor power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410466357.9A CN104270010A (en) | 2014-09-15 | 2014-09-15 | Contactor power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104270010A true CN104270010A (en) | 2015-01-07 |
Family
ID=52161512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410466357.9A Pending CN104270010A (en) | 2014-09-15 | 2014-09-15 | Contactor power supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104270010A (en) |
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2014
- 2014-09-15 CN CN201410466357.9A patent/CN104270010A/en active Pending
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Application publication date: 20150107 |