CN103413725A - Power-saving type alternating current contactor with power-saving unit - Google Patents
Power-saving type alternating current contactor with power-saving unit Download PDFInfo
- Publication number
- CN103413725A CN103413725A CN2013103311417A CN201310331141A CN103413725A CN 103413725 A CN103413725 A CN 103413725A CN 2013103311417 A CN2013103311417 A CN 2013103311417A CN 201310331141 A CN201310331141 A CN 201310331141A CN 103413725 A CN103413725 A CN 103413725A
- Authority
- CN
- China
- Prior art keywords
- contactor
- voltage
- suppressor diode
- port
- transient voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001052 transient effect Effects 0.000 claims description 83
- 230000005404 monopole Effects 0.000 claims description 78
- 230000000087 stabilizing effect Effects 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 description 56
- 230000001070 adhesive effect Effects 0.000 description 28
- 239000000853 adhesive Substances 0.000 description 24
- 238000010586 diagram Methods 0.000 description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 13
- 230000010355 oscillation Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 230000005611 electricity Effects 0.000 description 8
- 230000003068 static effect Effects 0.000 description 8
- 230000015556 catabolic process Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 210000003298 dental enamel Anatomy 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Images
Landscapes
- Keying Circuit Devices (AREA)
Abstract
The invention discloses a power-saving type alternating current contactor with a power-saving unit. The power-saving alternating current contactor with the power-saving unit is composed of a first voltage-controlled switching circuit, an energy-storing circuit and a second voltage-controlled switching circuit, and is characterized in that the power-saving type alternating current contactor with the power-saving unit is a network provided with four ports, the port N1 and the port N2 are input ports of the network, and the port P1 and the port P2 are output ports of the network; the input port N1 and the input port N2 are connected with the S1 end and the S2 end of the AC voltage respectively, and the output port P1 and the output port P2 are connected with the A1 end and the A2 end of the magnet exciting coil L of a traditional alternating current contactor respectively; the N1 end, the first voltage-controlled switching circuit, the energy-storing circuit, the second voltage-controlled switching circuit and the N2 end are sequentially connected in series, the P1 end is led from the connecting position of the first voltage-controlled switching circuit and the energy-storing circuit, and the P2 end is led from the connecting position of the energy-storing circuit and the second voltage-controlled switching circuit.
Description
Technical field
The present invention relates to Low Voltage Electrical Apparatus, relate in particular to a kind of electricity saving function electricity-saving type A.C. contactor that is provided with power save unit that has.
Background technology
A.C. contactor is a kind of application low-voltage electrical apparatus very widely.Its operation principle is to utilize electromagnet drive moving contact (make contact) with fixed contact (break contact) closure or separate, and reaches the purpose that switches on or off circuit.It is applicable to starting or controls three phase induction motor and other power consumption equipment.
Fig. 1 is the fundamental diagram of traditional A.C. contactor.This traditional A.C. contactor mainly is comprised of moving iron core, static iron core, magnet exciting coil, back-moving spring, break contact, make contact.When magnet exciting coil is connected AC220V, AC110V or AC380V voltage (following common name AC220V, AC110V or AC380V are AC voltage or field power supply), moving iron core be subjected to the magnetic force that magnet exciting coil produces effect and with the static iron core closure, also thereupon closed with the make contact of moving iron core interlock, external circuit is just connected by this make contact; When the AC voltage on magnet exciting coil disconnected, moving iron core loss of excitation also was subjected to the effect of back-moving spring and separates with static iron core, the make contact disconnection that resets, and external circuit just is cut off thereupon.
In sum, the course of work of this traditional A.C. contactor can be divided into " adhesive ", " sticking ", " resetting " three phases:
1, adhesive: magnet exciting coil and AC voltage are connected, dynamic and static iron core adhesive.In this stage, be the inertia that overcomes moving iron core and the elastic force of back-moving spring, field power supply must provide larger power (being " adhesive power " hereinafter referred to as this power), the adhesive mutually of dynamic and static iron core;
2, sticking: magnet exciting coil continues to connect with AC voltage, and dynamic and static iron core continues to keep the state of adhesive.In this stage, field power supply need only provide less power (being " holding power " hereinafter referred to as this power), and dynamic and static iron core also can continue adhesive.If in this stage, field power supply provides excessive holding power, will cause waste of energy and cause A.C. contactor unnecessary heating up;
3, reset: magnet exciting coil disconnects AC voltage, the separation that " resets " of dynamic and static iron core.
The purposes of A.C. contactor varies, and structure also varies, but their operation principle is all identical with Fig. 1.
Traditional A.C. contactor all passes to identical AC voltage due in adhesive and sticking stage magnet exciting coil, therefore has following critical defect:
1, meaningless power consumption: front already described, in adhesive and sticking stage, in the magnet exciting coil of traditional A.C. contactor, all pass to " identical " AC voltage, make holding power excessive, caused meaningless electric energy loss;
2, heating: the disastrous effect of meaningless electric energy loss institute association is " heating heats up ", when serious, even can burn the magnet exciting coil of traditional A.C. contactor;
3, the quality " with fortune " of adhesive action: at magnet exciting coil, connect the moment of AC voltage, when the instantaneous value of AC voltage is higher, the powerful adhesive of described conventional AC contactor; On the contrary, described magnet exciting coil is connected the moment of AC voltage, when the instantaneous value of AC voltage is low, and the slow adhesive of described conventional AC contactor, in the case, its make contact or break contact just may seriously burn because striking sparks.
For the critical defect that traditional A.C. contactor exists, the technical staff in electronics, electrical apparatus industry studies, has designed multiple " electricity-saving circuit ", " electricity-saving appliance ", " energy saving ac contactor " be used to improving traditional A.C. contactor performance.Chinese patent application number is that 97216246.1 " high-effect energy-saving ac contactor ", application number are that 94202133.9 " energy-saving alternating current contactor unit ", application number are that 201010144412.4 " a kind of energy saving ac contactor " discloses patent applicant's achievement in research separately; Hangzhou, Changzhou, Zhuhai Deng Dide universities and colleges or manufacturer also are useful on " electricity-saving appliance " that improve conventional AC contactor performance and come out.
Above-mentioned prior art really, for improving the performance of conventional AC contactor, has been made useful exploration and has been obtained certain achievement, but the following defect of ubiquity:
1, complex structure, be difficult to carry out;
2, electronic device used is too many, and electronic circuit is too complicated; Adopt monolithic processor controlled " economizer of AC. contactor " to be subject to the electromagnetic interference of the electrical equipment such as A.C. contactor itself or motor and cause internal processes execution error, the control of generation " flyer " mistake, this mistake control can breed disaster in some occasion;
3, the product price of enforcement production is too high, and for example the price of the QXJB type economizer of AC. contactor of Zhuhai City, Guangdong Province Co., Ltd production is up to 1500 yuan/platform! Just more than 20 yuan of the price of small-sized A.C. contactor, the price of medium-sized A.C. contactor also only has hundreds of unit, and so expensive " QXJB type economizer of AC. contactor " will make the user very few.
4, due to the electronic circuit complexity, electronic device used is many, and therefore, the economize on electricity of A.C. contactor is controlled part and is difficult to become one with A.C. contactor, and part is controlled in described economize on electricity must separately establish a box, causes user installation inconvenience, wiring trouble.
Just because of prior art, have above defect, so following situation occurred: " China's electricity-saving type A.C. contactor has had certain market at present, but universal not enough, and traditional A.C. contactor is occupied an leading position at present on the user uses.Main cause is that the power-saving contactor price is more expensive, and the user can't accept on disposable input, awaits country and in the popularization of energy-saving type contactor, strengthens the policy dynamics, promotes the extensive use of energy-saving type contactor ".(list of references 1: money Jinchuan etc. the alternating-current contactor energy-saving technology summary. the 4th phase of the market conditions .2011 of China Electronics)
For the present situation of prior art, the present invention want Da to target be:
1, grasping the starting point of " to extremely letter of essence; have simple and practical ability only and spread for a long time ", " application electric technology; rebuild traditional industry ", design a kind of electronic circuit as far as possible simple, used device try one's best honest and clean, the performance of few, price of trying one's best surpass " power save unit " of power-saving alternating-current contactor special use prior art, " to essence to letter ";
2, should " power save unit " to essence to letter can be used for transforming the conventional AC contactor of online use, making these A.C. contactors rise Grade becomes " electricity-saving type A.C. contactor ";
3, should also can be integrated in the conventional AC contactor that will produce to " power save unit " of essence to letter, the manufacturer of A.C. contactor is produced and " power save unit " integrated novel " power-saving alternating-current contactor ".
Summary of the invention
In order to reach above-mentioned target, the technical scheme of the present invention's design is: a kind of electricity-saving type A.C. contactor that is provided with power save unit, by the first pressuring controling switch circuit, accumulator and the second pressuring controling switch circuit three parts, formed, be characterised in that: it is four port networks, port N1, N2 are its input port, and port P1, P2 are its output port; Input port N1, N2 are connected with S1, the S2 of AC voltage end respectively, output port P1, P2 respectively with the conventional AC contactor in A1, the A2 of magnet exciting coil L hold and be connected; And described the first pressuring controling switch circuit, accumulator, the second pressuring controling switch circuit can form described four port networks by following three kinds of methods:
(a) N1 end, the first pressuring controling switch circuit, accumulator, the second pressuring controling switch circuit, the series connection successively of N2 end, the P1 end is drawn from the junction of the first pressuring controling switch circuit and accumulator, and the P2 end is drawn from the junction of accumulator and the second pressuring controling switch circuit;
(b) N1 end, the first pressuring controling switch circuit, the second pressuring controling switch circuit, accumulator, the series connection successively of N2 end, the P1 end is drawn from the junction of the second pressuring controling switch circuit and accumulator, and the P2 end is connected with the N2 end;
(c) N1 end, accumulator, the first pressuring controling switch circuit, the second pressuring controling switch circuit, the series connection successively of N2 end, the P1 end is connected with the N1 end, and the P2 end is drawn from the junction of accumulator and the first pressuring controling switch circuit.
The S1 of described AC voltage end, S2 end can the reciprocity connectivity ports, and the A1 end of described magnet exciting coil, the A2 end also can the reciprocity connectivity port.
The power save unit of A.C. contactor of the present invention combines with the conventional AC contactor, can form novel electricity-saving type A.C. contactor.
Described the first pressuring controling switch circuit by monopole type transient voltage suppressor diode TVS1 form, accumulator by capacitor C form, the second pressuring controling switch circuit is comprised of monopole type transient voltage suppressor diode TVS2.
The circuit structure of the power save unit of described A.C. contactor is:
(a) negative pole of monopole type transient voltage suppressor diode TVS1 connects the N1 end of described four port networks, the P1 end that positive pole connects four port networks; One end of capacitor C also connects described P1 end, the P2 end of described four port networks of another termination; The positive pole of monopole type transient voltage suppressor diode TVS2 also connects described P2 end, and negative pole connects described four port network N2 ends;
Perhaps be (b): an end of the positive pole of described N1 end, monopole type transient voltage suppressor diode TVS1, the negative pole of TVS1, P1 end, capacitor C, the other end of capacitor C, P2 end, the negative pole of monopole type transient voltage suppressor diode TVS2, the positive pole of TVS2, N2 end are in series successively and form the power save unit of described A.C. contactor;
Perhaps be (c): the positive pole of the negative pole of described N1 end, monopole type transient voltage suppressor diode TVS1, the positive pole of TVS1, monopole type transient voltage suppressor diode TVS2, the negative pole of TVS2, P1 end, an end of capacitor C, the other end of capacitor C, P2 end, N2 end are in series successively and form the power save unit of described A.C. contactor;
Perhaps be (d): the negative pole of the positive pole of described N1 end, monopole type transient voltage suppressor diode TVS1, the negative pole of TVS1, monopole type transient voltage suppressor diode TVS2, the positive pole of TVS2, P1 end, an end of capacitor C, the other end of capacitor C, P2 end, N2 end are in series successively and form the power save unit of described A.C. contactor;
Perhaps be (e): the negative pole of an end of described N1 end, P1 end, capacitor C, the other end of capacitor C, P2 end, monopole type transient voltage suppressor diode TVS1, the positive pole of TVS1, the positive pole of monopole type transient voltage suppressor diode TVS2, the negative pole of TVS2, N2 end are in series successively and form the power save unit of described A.C. contactor;
Perhaps be (f): the positive pole of an end of described N1 end, P1 end, capacitor C, the other end of capacitor C, P2 end, monopole type transient voltage suppressor diode TVS1, the negative pole of TVS1, the negative pole of monopole type transient voltage suppressor diode TVS2, the positive pole of TVS2, N2 end are in series successively and form the power save unit of described A.C. contactor.
The common trait of the power save unit of the A.C. contactor of above-mentioned multiple circuit structure is; By after monopole type transient voltage suppressor diode TVS1, monopole type transient voltage suppressor diode TVS2, three electronic component series connection of capacitor C, forming, its output P1 all draws from an end of capacitor C, and another output P2 all draws from the other end of capacitor C.
Described monopole type transient voltage suppressor diode TVS1 and TVS2 can substitute simultaneously with ambipolar transient voltage suppressor diode, piezo-resistance and voltage stabilizing didoe are one of any, also can be with any two the substituting respectively of ambipolar transient voltage suppressor diode, piezo-resistance and voltage stabilizing didoe, preferably, with voltage stabilizing didoe, substitute simultaneously.。
The long operation result of theory analysis and experimental prototype (the present invention only has three electronic components, and model machine is easy to do) proves that all application the present invention can obtain following beneficial effect:
1, inexpensive: in the present invention for improvement of conventional AC contactor performance to the essence to the letter " power save unit ", monopole type transient voltage suppressor diode TVS1, monopole type transient voltage suppressor diode TVS2, three electronic components of capacitor C are only arranged, and total cost is less than 0.4 yuan.Only spend 0.4 yuan, just can make the conventional AC contactor be promoted to " the electricity-saving type A.C. contactor " of premium properties, solved the problem that list of references 1 discloses: " China's electricity-saving type A.C. contactor has had certain market at present; but universal not enough, traditional A.C. contactor is occupied an leading position at present on the user uses.Main cause is that the power-saving contactor price is more expensive, the user can't accept on disposable input, await country and in the popularization of energy-saving type contactor, strengthen the policy dynamics, promote the extensive use of energy-saving type contactor ", for electricity-saving type A.C. contactor spread has been created condition;
2, thing U.S.: the volume of above-mentioned three electronic components is all fine, they can be integrated into to the inside of conventional AC contactor, manufactures the electricity-saving type A.C. contactor integrated, that outward appearance is pleasing.This point, prior art all too far behind to catch up, be difficult to accomplish;
3, reliable: the quantity of the reliability of electronic product and electronic device used is inversely proportional to, price and used
The quantity of electronic device be directly proportional.Electronic device used is more, and electronic circuit is more complicated, just means that reliability is lower, price is higher.The present invention only uses three electronic devices, and is all the power-type device of not being afraid of electromagnetic interference that forceful electric power is used, and therefore, not only cost is low, and reliability is high;
4, lengthen the life: a traditional CJX2 A.C. contactor, the CJX2 A.C. contactor with " power save unit " of the present invention transformation, after the same place that room temperature is 34 ° of C was moved 10 hours simultaneously, the temperature on the former surface had surpassed 50 ° of C, touched scalding one's hand; The latter, the temperature on surface is still room temperature.Temperature rise is the formidable enemy of electronics, electric equipment products, and temperature rise is higher, and the useful life of product is just shorter, otherwise just can extend useful life.Therefore, the present invention has prolongation product " lengthening the life " function in useful life;
5, quick: the present invention is provided with " threshold voltage ", and AC voltage is greater than " threshold voltage ", " pick-up voltage " when enough high, and A.C. contactor is just done the adhesive action.Therefore, adhesive action of the present invention is strong and powerful, clear, sucting speed is fast.The advantage of quick pick-up of the present invention, can reduce contact electric arc, prevent that contact from burning inefficacy, to the protection contact, extend the contactor life-span and have important effect.
6, economize on electricity: temperature rise is low is the visualize of economize on electricity, and measured result also shows that electric energy of the present invention is greater than 80 ℅.
7, material-saving: choose the value of suitable capacitor C, both can reduce the number of turns of magnet exciting coil L, can guarantee electricity saving performance again.Bring into play this advantage of the present invention, just can make A.C. contactor reduce the consumption of expensive enamel covered wire.
The accompanying drawing explanation
Fig. 1 is the fundamental diagram of A.C. contactor.
Fig. 2 is the functional-block diagram of embodiment 1, embodiment 2.
Fig. 3 is the circuit theory diagrams of embodiment 1.
Fig. 4 is the circuit theory diagrams of embodiment 2.
Fig. 5 is the functional-block diagram of embodiment 3, embodiment 4.
Fig. 6 is the circuit theory diagrams of embodiment 3.
Fig. 7 is the circuit theory diagrams of embodiment 4.
Fig. 8 is the functional-block diagram of embodiment 5, embodiment 6.
Fig. 9 is the circuit theory diagrams of embodiment 5.
Figure 10 is the circuit theory diagrams of embodiment 6.
Figure 11 is the oscillogram of damped oscillation voltage U C and AC voltage.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described.
Fig. 2 is the present invention's embodiment 1, the functional-block diagram of embodiment 2, and Fig. 3 is the circuit theory diagrams of embodiment 1.In Fig. 2, Fig. 3: dashed rectangle 100 means that the present invention are the power save unit (hereinafter to be referred as " power save unit ") of A.C. contactor, and it is that to have two inputs be that N1 is four port networks that P1 and P2 hold with N2 end, two outputs; In described power save unit 100 101 be the first pressuring controling switch circuit, 102 for accumulator, 103 be that the second pressuring controling switch circuit, L are that magnet exciting coil, A1, A2 in the conventional AC contactor is its two connectivity ports.
In conjunction with Fig. 2; N1 end, the first pressuring controling switch circuit 101, accumulator 102, the second pressuring controling switch circuit 103, N2 end are composed in series described power save unit 100 successively, and its P1 end is drawn from the first pressuring controling switch circuit 101 and the junction of accumulator 102, the P2 end is drawn from the junction of accumulator 102 and the second pressuring controling switch circuit 103; Input port N1, N2 are connected with S1, the S2 end of AC voltage respectively, and output port P1, P2 are connected with A1, the A2 end of magnet exciting coil L respectively.
The S1 of described AC voltage end, S2 end can the reciprocity connectivity ports, and the A1 end of described magnet exciting coil, the A2 end also can the reciprocity connectivity port.
Power save unit 100 of the present invention combines with the conventional AC contactor, can form novel electricity-saving type A.C. contactor.
Again in conjunction with Fig. 2, Fig. 3: the first pressuring controling switch circuit 101 by monopole type transient voltage suppressor diode TVS1 form, accumulator 102 by capacitor C form, the second pressuring controling switch circuit 103 is comprised of monopole type transient voltage suppressor diode TVS2.
The circuit structure of the present embodiment 1 is: the output P1 end that the input N1 end of the negative pole termination power save unit 100 of monopole type transient voltage suppressor diode TVS1, positive pole connect power save unit 100; One end of capacitor C also connects the output P1 end of power save unit 100, the output P2 end of another termination power save unit 100; The positive pole of monopole type transient voltage suppressor diode TVS2 also connects described P2 end, and negative pole connects the input N2 end of power save unit 100.
Below in conjunction with accompanying drawing, set forth the course of work of the present embodiment 1:
In conjunction with Fig. 2, Fig. 3, Figure 11: from the mathematic(al) representation of the AC voltage of S1, S2 end input be:
u=Umsin（2πft＋φ）
In following formula: u is the instantaneous value of AC voltage, and Um is the amplitude of AC voltage, and f is the frequency of AC voltage, and φ is the initial phase angle of AC voltage.
For concise explanation, now suppose initial phase angle φ=0, the expression formula of the instantaneous value u of AC voltage is:
u=Umsin2πft
Its waveform as shown in figure 11.In figure: t means the time.
During t=t1, AC voltage is connected, and now, before the connection of AC voltage, capacitor C and magnet exciting coil L electric discharge all finish, therefore the voltage at capacitor C two ends (being the output voltage of power save unit 100) UC=0; At this t=t1 constantly: monopole type transient voltage suppressor diode TVS1 reverse bias, monopole type transient voltage suppressor diode TVS2 forward bias, the instantaneous value of AC voltage:
u1＝Umsin2πft1＜UT1
In following formula, UT1 is the reverse breakdown voltage of monopole type transient voltage suppressor diode TVS1.Because u1=Umsin2 π ft1<UT1 event monopole type transient voltage suppressor diode TVS1 is equivalent to open circuit, the output voltage U C=0 of power save unit 100, not adhesive of A.C. contactor.
In conjunction with Fig. 1, the professional and technical personnel should be clear: if it is upper that the instantaneous value u1=Umsin2 π ft1 of t=t1 AC voltage constantly directly is applied to magnet exciting coil L, may produce one of following bad phenomenon:
1, the value of u1 is too low, and its magnetic force produced is less than the elastic force of back-moving spring F, A.C. contactor power consumption and not adhesive in vain;
2, the value of u1 is large not, and its magnetic force produced only is slightly larger than the elastic force of back-moving spring F, and A.C. contactor is adhesive reluctantly and feebly, and its contact is because of the long scaling loss that subjects to of sparking time.
Above-mentioned phenomenon is one of shortcoming of conventional AC contactor.
In the time domain of t1～t10, the AC voltage grading, monopole type transient voltage suppressor diode TVS1 continues to end not conducting, still not adhesive of A.C. contactor.
In the time domain of t10～t2, monopole type transient voltage suppressor diode TVS1 forward bias, monopole type transient voltage suppressor diode TVS2 reverse bias.In this time domain, the value of AC voltage all is less than the reverse breakdown voltage UT2 of monopole type transient voltage suppressor diode TVS2, therefore monopole type transient voltage suppressor diode TVS2 is equivalent to open circuit, and the output voltage U C=0 of power save unit 100, still not adhesive of A.C. contactor.
During t=t2, the instantaneous value of AC voltage: u2=Umsin2 π ft2 >=UT2, monopole type transient voltage suppressor diode TVS2 punctures conducting, is equivalent to short circuit.AC voltage charges to capacitor C and makes the powerful adhesive of A.C. contactor and enter the sticking state.
Analyze so far, can reach a conclusion: the random AC voltages of connecting of 100 pairs of power save unit have the function of automatic discriminating: when the instantaneous value u=Umsin2 of AC voltage π ft<UT1 or u=Umsin2 π ft<UT2, the voltage U C=0 of described power save unit 100 outputs, not adhesive of A.C. contactor; When the instantaneous value u=Umsin2 of AC voltage π ft >=UT1 or u=Umsin2 π ft >=UT2,, the powerful adhesive of A.C. contactor.
Therefore, as long as select the value (being called for short UT1 or UT2 is " threshold voltage ") of sufficiently high UT1 and UT2, AC voltage just can provide larger " adhesive power ", can guarantee that the A.C. contactor adhesive is strong and powerful.
In other words: as long as select the sufficiently high monopole type transient voltage suppressor diode of reverse breakdown voltage TVS1, TVS2 to form power save unit 100, just can guarantee A.C. contactor strong and powerful ground adhesive when AC voltage is enough high.
In brief: when AC voltage is greater than " threshold voltage ", can guarantee the adhesive of strong and powerful ground of A.C. contactor.
In other words: the present invention is provided with " threshold voltage ", and when AC voltage was greater than " threshold voltage ", A.C. contactor was just done the adhesive action.
Be provided with threshold voltage, can guarantee that the A.C. contactor adhesive is strong and powerful, clear, sucting speed is fast.The characteristics of quick pick-up of the present invention, can reduce contact electric arc, prevent that contact from burning inefficacy, to the protection contact, extend the contactor life-span and have important effect, be one of significant advantage of the present invention.
During t=t3, the voltage at capacitor C two ends is charged to UC3, and the voltage at monopole type transient voltage suppressor diode TVS2 two ends is that Umsin2 π ft3-UC3<UT2 makes its shutoff, it is equivalent to open circuit.
In the time domain of t3～t20, because capacitor C and magnet exciting coil L all contain electric energy, therefore, they make Figure 11 represented " damped oscillation " (in figure, E1, E2 are the envelope of damped oscillation), and its cycle T b, frequency f b are respectively:
Tb＝2 fb＝1／T＝1╱2
A.C. contactor relies on this damped oscillation and maintains the sticking state.
Analyze so far, can draw to draw a conclusion:
1, the electrical quantity of capacitor C and magnet exciting coil L has determined the slope of damped oscillation frequency f b and damped oscillation envelope.When magnet exciting coil L is the situation of definite value, can, by adjusting the value of capacitor C, make the slope of damped oscillation frequency f b and damped oscillation envelope be the optimum value that electric energy is the highest.
2, reduce the number of turns of magnet exciting coil L, choose the value of suitable capacitor C, also can make the present invention enter the state that economize on electricity is best.
In brief: choose the value of suitable capacitor C, can reduce the number of turns of magnet exciting coil L.
This is one of important advantage of the present invention, and experimental prototype of the present invention proves: application the present invention, the number of turns of the magnet exciting coil L of conventional AC contactor is reduced to 200 circles, and application the present invention, still can obtain and be greater than 70% electric energy.Bring into play this advantage of the present invention, just can make A.C. contactor reduce the consumption of expensive enamel covered wire.
In the time domain of t20～t4, monopole type transient voltage suppressor diode TVS1 reverse bias, monopole type transient voltage suppressor diode TVS2 forward bias, the value of AC voltage is less than UT1, therefore monopole type transient voltage suppressor diode TVS1 equivalence open circuit, capacitor C and magnet exciting coil L continue damped oscillation, and A.C. contactor continues to maintain the sticking state.
During t=t4, the voltage U c=uc4 at capacitor C two ends, the instantaneous value u4=Umsin2 π ft4 of AC voltage.
Now, the voltage at monopole type transient voltage suppressor diode TVS1 two ends is:
u4—Uc＝Umsin2πft4—uc4≥UT1
Therefore monopole type transient voltage suppressor diode TVS1 reverse breakdown, equivalent short circuit, AC voltage charges to capacitor C.
During t=t5, the voltage U c=uc5 at capacitor C two ends,
The instantaneous value u5=Umsin2 π ft5 of AC voltage.
Now, the voltage at monopole type transient voltage suppressor diode TVS1 two ends is:
u5—Uc＝Umsin2πft5—uc5＜UT1，
Therefore monopole type transient voltage suppressor diode TVS1 cut-off, the equivalence open circuit, capacitor C and magnet exciting coil L damped oscillation, A.C. contactor continues to maintain the sticking state.
In the time domain of t5～t30, capacitor C and magnet exciting coil L continue damped oscillation, and A.C. contactor continues to maintain the sticking state.
In the time domain of t30～t6, monopole type transient voltage suppressor diode TVS1 forward bias, monopole type transient voltage suppressor diode TVS2 reverse bias, the value of AC voltage is less than UT2, therefore monopole type transient voltage suppressor diode TVS2 equivalence open circuit, capacitor C and magnet exciting coil L continue damped oscillation, and A.C. contactor continues to maintain the sticking state.
During t=t6, the voltage U c=uc6 at capacitor C two ends,
The instantaneous value u6=Umsin2 π ft6 of AC voltage.
Now, the voltage at monopole type transient voltage suppressor diode TVS2 two ends is:
u6—Uc＝Umsin2πft6—uc6≥UT2
Therefore monopole type transient voltage suppressor diode TVS2 reverse breakdown, equivalent short circuit, AC voltage charges to capacitor C.
The repetition so gone round and begun again, can maintain the sticking state of A.C. contactor.
In conjunction with Figure 11, can draw to draw a conclusion again:
1, the conventional AC contactor all is connected with AC voltage (or claiming the energising of full-time territory) at the sticking state, and the holding power that AC voltage provides is excessive, will cause waste of energy and cause A.C. contactor unnecessary heating up.
2, in the present invention, AC voltage is only in the local time domain of monopole type transient voltage suppressor diode TVS1 or monopole type transient voltage suppressor diode TVS2 short circuit conducting, and for example the time domain (being that the angle of flow is the time domain of Q3) of the time domain (being that the angle of flow is the time domain of Q2) of the time domain of t2～t3 (being that the angle of flow is the time domain of Q1), t4～t5, t6～t7 is to capacitor C and magnet exciting coil L energising energy storage.
In brief: AC voltage is in the time domain of monopole type transient voltage suppressor diode TVS1 or TVS2 short circuit conducting, to capacitor C and magnet exciting coil L energising energy storage.
3, the reverse voltage at monopole type transient voltage suppressor diode TVS1 two ends is greater than its reverse breakdown voltage UT1(or claims threshold voltage UT1) time, its equivalent short circuit, AC voltage for example, to capacitor C charging (angle of flow is the time domain of Q2).
In brief: when the reverse voltage at monopole type transient voltage suppressor diode TVS1 two ends was greater than its threshold voltage UT1, AC voltage charged to capacitor C.
4, the reverse voltage at monopole type transient voltage suppressor diode TVS2 two ends is greater than its reverse breakdown voltage UT2(or claims threshold voltage UT2) time, its equivalent short circuit, AC voltage for example, to capacitor C charging (angle of flow is the time domain of Q1, Q3).
In brief: when the reverse voltage at monopole type transient voltage suppressor diode TVS2 two ends was greater than its threshold voltage UT2, AC voltage charged to capacitor C.
Adopting the technology of " local time domain energising ", is the present invention's one of mechanism of economizing on electricity.
Fig. 4 is the circuit theory diagrams of embodiment 2.With embodiment 1, compare, the present embodiment has changed the polarity of monopole type transient voltage suppressor diode TVS1 and TVS2, namely becomes following method and connects: an end of the positive pole of described N1 end, monopole type transient voltage suppressor diode TVS1, the negative pole of TVS1, P1 end, capacitor C, the other end of capacitor C, P2 end, the negative pole of monopole type transient voltage suppressor diode TVS2, the positive pole of TVS2, N2 end are composed in series described power save unit 100 successively.After having done such change, its operation principle and the course of work are still identical with embodiment 1.
Fig. 5 is the functional-block diagram of embodiment 3, embodiment 4, in figure: described the first pressuring controling switch circuit 101, the second pressuring controling switch circuit 103, accumulator 102 form described power save unit 100:N1 end, the first pressuring controling switch circuit 101, the second pressuring controling switch circuit 103, accumulator 102, the series connection successively of N2 end as follows, the P1 end is drawn from the second pressuring controling switch circuit 103 and the junction of accumulator 102, and the P2 end is connected with the N2 end.
The feature of above-mentioned method of attachment is: described A2 holds, P2 holds, N2 holds, the S2 end all is connected to each other, and becomes for ease of connection or is convenient to integrated common port.
Fig. 6 is the circuit theory diagrams of embodiment 3, with embodiment 1, compare, the present embodiment has changed the position of monopole type transient voltage suppressor diode TVS2, described TVS1, TVS2 become the connection of " back-to-back " that be connected for positive pole, namely become following method and connect: the positive pole of the negative pole of described N1 end, monopole type transient voltage suppressor diode TVS1, the positive pole of TVS1, monopole type transient voltage suppressor diode TVS2, the negative pole of TVS2, P1 end, an end of capacitor C, the other end of capacitor C, P2 end, N2 end are composed in series described power save unit 100 successively.After having done such change, its operation principle and the course of work are still identical with embodiment 1.
Fig. 7 is the circuit theory diagrams of embodiment 4, with embodiment 1, compare, the present embodiment has changed the position of monopole type transient voltage suppressor diode TVS2, described TVS1, TVS2 become the connection of " face-to-face " that be connected for negative pole, namely become following method and connect: the negative pole of the positive pole of described N1 end, monopole type transient voltage suppressor diode TVS1, the negative pole of TVS1, monopole type transient voltage suppressor diode TVS2, the positive pole of TVS2, P1 end, an end of capacitor C, the other end of capacitor C, P2 end, N2 end are composed in series described power save unit 100 successively.After having done such change, its operation principle and the course of work are still identical with embodiment 1.
Fig. 8 is the functional-block diagram of embodiment 5, embodiment 6, in figure: described the first pressuring controling switch circuit 101, the second pressuring controling switch circuit 103, accumulator 102 form described power save unit 100:N1 end, accumulator 102, the first pressuring controling switch circuit 101, the second pressuring controling switch circuit 103, the series connection successively of N2 end as follows, the P1 end is connected with the N1 end, and the P2 end is drawn from the junction of accumulator 102 and the first pressuring controling switch circuit 101.
The feature of above-mentioned method of attachment is: described S1 holds, N1 holds, P1 holds, the A1 end all is connected to each other, and becomes for ease of connection or is convenient to integrated common port.
Fig. 9 is the circuit theory diagrams of embodiment 5, with embodiment 1, compare, the present embodiment has changed the position of monopole type transient voltage suppressor diode TVS1, described TVS1, TVS2 become the connection of " back-to-back " that be connected for positive pole, namely become following method and connect: the negative pole of an end of described N1 end, P1 end, capacitor C, the other end of capacitor C, P2 end, monopole type transient voltage suppressor diode TVS1, the positive pole of TVS1, the positive pole of monopole type transient voltage suppressor diode TVS2, the negative pole of TVS2, N2 end are composed in series described power save unit 100 successively.After having done such change, its operation principle and the course of work are still identical with embodiment 1.
Figure 10 is the circuit theory diagrams of embodiment 6, with embodiment 1, compare, the present embodiment has changed the position of monopole type transient voltage suppressor diode TVS1, described TVS1, TVS2 become the connection of " face-to-face " that be connected for negative pole, namely become following method and connect: the positive pole of an end of described N1 end, P1 end, capacitor C, the other end of capacitor C, P2 end, monopole type transient voltage suppressor diode TVS1, the negative pole of TVS1, the negative pole of monopole type transient voltage suppressor diode TVS2, the positive pole of TVS2, N2 end are composed in series described power save unit 100 successively.After having done such change, its operation principle and the course of work are still identical with embodiment 1.
The common trait of above-described embodiment is; Described power save unit 100 is by monopole type transient voltage suppressor diode TVS1, monopole type transient voltage suppressor diode TVS2, three rear compositions of electronics series connection of capacitor C, its output P1 all draws from an end of capacitor C, and another output P2 all draws from the other end of capacitor C.
Described monopole type transient voltage suppressor diode TVS1 and TVS2 can substitute simultaneously with ambipolar transient voltage suppressor diode, piezo-resistance and voltage stabilizing didoe are one of any, also can be with any two the substituting respectively of ambipolar transient voltage suppressor diode, piezo-resistance and voltage stabilizing didoe, preferably, with voltage stabilizing didoe, substitute simultaneously.
More than set forth technical scheme of the present invention, all technology that do not break away from the essence of technical scheme of the present invention substitute, all should be in the scope of claim of the present invention.
Claims (3)
1. electricity-saving type A.C. contactor that is provided with power save unit, by the first pressuring controling switch circuit, accumulator and the second pressuring controling switch circuit three parts, formed, be characterised in that: the described electricity-saving type A.C. contactor that is provided with node unit is four port networks, and it has first input end mouth (N1), the second input port (N2), the first output port (P1) and the second output port (P2); First input end mouth (N1) is connected with the second end (S2) with the first end (S1) of AC voltage respectively with the second input port (N2), and the first output port (P1) is connected with the second end (A2) with the first end (A1) of magnet exciting coil (L) respectively with the second output port (P2);
Wherein, first input end mouth (N1), the first pressuring controling switch circuit, accumulator, the second pressuring controling switch circuit, the second input port (N2) are connected successively; the first output port (P1) is drawn from the junction of the first pressuring controling switch circuit and accumulator, and the second output port (P2) is drawn from the junction of accumulator and the second pressuring controling switch circuit;
Wherein, the first pressuring controling switch circuit by the first monopole type transient voltage suppressor diode (TVS1) form, accumulator by electric capacity (C) form, the second pressuring controling switch circuit is comprised of the second monopole type transient voltage suppressor diode (TVS2).
2. the electricity-saving type A.C. contactor that is provided with power save unit as claimed in claim 1 is characterized in that:
Wherein, described the first monopole type transient voltage suppressor diode (TVS1) and the second monopole type transient voltage suppressor diode (TVS2) can substitute simultaneously with ambipolar transient voltage suppressor diode, piezo-resistance and voltage stabilizing didoe are one of any, also can be alternative respectively with any two; Preferably, with voltage stabilizing didoe, substitute simultaneously.
3. the electricity-saving type A.C. contactor that is provided with power save unit as claimed in claim 1 is characterized in that:
Wherein, the negative pole of the first monopole type transient voltage suppressor diode (TVS1) connects the first input end mouth (N1) of described four port networks, the first output port (P1) that positive pole connects four port networks; One end of electric capacity (C) also connects described the first output port (P1), second output port (P2) of described four port networks of another termination; The positive pole of the second monopole type transient voltage suppressor diode (TVS2) also connects described the second output port (P2), and negative pole connects second input port (N2) of described four port networks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310331141.7A CN103413725B (en) | 2013-08-01 | 2013-08-01 | Be provided with the electricity-saving type A.C. contactor of power save unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310331141.7A CN103413725B (en) | 2013-08-01 | 2013-08-01 | Be provided with the electricity-saving type A.C. contactor of power save unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103413725A true CN103413725A (en) | 2013-11-27 |
| CN103413725B CN103413725B (en) | 2015-10-28 |
Family
ID=49606726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310331141.7A Expired - Fee Related CN103413725B (en) | 2013-08-01 | 2013-08-01 | Be provided with the electricity-saving type A.C. contactor of power save unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103413725B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422959A (en) * | 2015-12-01 | 2016-03-23 | 宁波市镇海华泰电器厂 | Direct-current electromagnetic valve with triode type high and low level conversion circuit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5517383A (en) * | 1993-03-03 | 1996-05-14 | Stc Submarine Systems Limited | Branching unit for submarine systems |
| CN200950423Y (en) * | 2006-09-29 | 2007-09-19 | 德力西集团有限公司 | AC contactor control circuit and energy-saving material-saving AC contactor having the same |
| CN102568932A (en) * | 2012-02-08 | 2012-07-11 | 宁波市镇海华泰电器厂 | Alternating current contactor with power saving and noise elimination |
| CN202523640U (en) * | 2012-05-07 | 2012-11-07 | 宁波市镇海华泰电器厂 | Variable frequency power-saving AC (Alternate Current) contactor |
| CN202678219U (en) * | 2012-02-10 | 2013-01-16 | 宁波市镇海华泰电器厂 | Alternating current contactor capable of saving electricity and silencing |
| CN203386660U (en) * | 2013-08-01 | 2014-01-08 | 宁波市镇海华泰电器厂 | Power saving AC contactor provided with power-saving unit |
-
2013
- 2013-08-01 CN CN201310331141.7A patent/CN103413725B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5517383A (en) * | 1993-03-03 | 1996-05-14 | Stc Submarine Systems Limited | Branching unit for submarine systems |
| CN200950423Y (en) * | 2006-09-29 | 2007-09-19 | 德力西集团有限公司 | AC contactor control circuit and energy-saving material-saving AC contactor having the same |
| CN102568932A (en) * | 2012-02-08 | 2012-07-11 | 宁波市镇海华泰电器厂 | Alternating current contactor with power saving and noise elimination |
| CN202678219U (en) * | 2012-02-10 | 2013-01-16 | 宁波市镇海华泰电器厂 | Alternating current contactor capable of saving electricity and silencing |
| CN202523640U (en) * | 2012-05-07 | 2012-11-07 | 宁波市镇海华泰电器厂 | Variable frequency power-saving AC (Alternate Current) contactor |
| CN203386660U (en) * | 2013-08-01 | 2014-01-08 | 宁波市镇海华泰电器厂 | Power saving AC contactor provided with power-saving unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422959A (en) * | 2015-12-01 | 2016-03-23 | 宁波市镇海华泰电器厂 | Direct-current electromagnetic valve with triode type high and low level conversion circuit |
| CN105422959B (en) * | 2015-12-01 | 2017-09-01 | 宁波市镇海华泰电器厂 | DC electromagnetic valve provided with triode type low and high level change-over circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103413725B (en) | 2015-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101982934B (en) | Soft starting device and method of high-power switching power supply | |
| CN103474293B (en) | Electronic type power-saving alternating current contactor | |
| CN103400724B (en) | Power saving and silencing AC contactor with thunder-proof function | |
| CN102637554B (en) | Frequency conversion unit used for alternating current contactor | |
| CN203774191U (en) | Power-saving type AC contactor with threshold voltage control | |
| CN102543579B (en) | Power-saving and silencing alternating-current contactor | |
| CN203386660U (en) | Power saving AC contactor provided with power-saving unit | |
| CN203386661U (en) | Power saving AC contactor provided with threshold voltage | |
| CN203774193U (en) | Power-saving type AC contactor applying auxiliary contact | |
| CN105226901B (en) | The drive circuit and magnetic resistance motor of switched reluctance motor, magnetic resistance motor | |
| CN103413725A (en) | Power-saving type alternating current contactor with power-saving unit | |
| CN202521032U (en) | Muting electromagnetic valve | |
| CN102568932B (en) | Alternating current contactor with power saving and noise elimination | |
| CN202523640U (en) | Variable frequency power-saving AC (Alternate Current) contactor | |
| CN202423130U (en) | Alternating current contactor capable of saving electricity and silencing | |
| CN202565196U (en) | Pulse type solenoid valve excitation power supply | |
| CN202678219U (en) | Alternating current contactor capable of saving electricity and silencing | |
| CN103413726B (en) | Be provided with the power-saving alternating-current contactor of threshold voltage | |
| CN202501080U (en) | Electronic type alternating current electromagnetic valve | |
| CN103413728B (en) | Multifunction electric subtype A.C. contactor | |
| CN203466130U (en) | Additional electronic unit of multifunctional ac contactor | |
| CN202580234U (en) | Magnetic valve with energy storage circuit unit | |
| CN202423132U (en) | Alternating-current contactor capable of saving power and silencing | |
| CN202564136U (en) | Power-saving and silent alternating-current contactor | |
| CN103413727B (en) | A.C. contactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Feng Hui Inventor after: Wang Zhongwei Inventor after: Chen Jinwei Inventor after: Qu Chuanjiang Inventor after: Guo Lehua Inventor after: Wang Fuhai Inventor after: Lin Hongbo Inventor after: Gai Xinjun Inventor after: Zhang Jun Inventor after: Wang Huibin Inventor after: Gao Mei Inventor after: Zheng Yanpeng Inventor after: Wang Hui Inventor after: Zhang Li Inventor after: Zhao Xinhong Inventor after: Ren Dajun Inventor after: Si Jun Inventor after: Fan Shoujie Inventor after: Xu Zhiqiang Inventor after: Lei Shutong Inventor after: Hu Guangming Inventor after: Feng Hui Zheng Yanpeng Guo Liming Du Yuemei Qu Wei Zhang Yan Zhang Xiaoling Song Lijun Meng Bo Wang Zhongwei Chen Jinwei Qu Chuanjiang Lin Hongbo Gai Xinjun Zhang Guo Wang Leroy Fuhai king Hui Bin Gao Mei Wang Hui Zhao Xinhong Ren Fan Shoujie in our army force Xu Zhiqiang Lei Shutong Hu Guangming Zhang Baomin Inventor after: Guo Liming Inventor after: Du Yuemei Inventor after: Qu Wei Inventor after: Zhang Yan Inventor after: Zhang Xiaoling Inventor after: Song Lijun Inventor after: Meng Bo Inventor before: Wang Mengjin |
|
| COR | Change of bibliographic data | ||
| GR01 | Patent grant | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150929 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant after: State Grid Corporation of China Applicant after: BINZHOU POWER SUPPLY COMPANY, STATE GRID SHANDONG ELECTRIC POWER CO., LTD. Applicant after: SHANDONG BINZHOU DONGLI ELECTRIC CO., LTD. Address before: 315200 Zhejiang province Zhenhai District of Ningbo City Jiao Chuan Ying Shi Qiao Zhu No. 74 Applicant before: Ningbo Zhenhai Huatai Electric Factory |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20160801 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |