CN103413725B - Be provided with the electricity-saving type A.C. contactor of power save unit - Google Patents
Be provided with the electricity-saving type A.C. contactor of power save unit Download PDFInfo
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- 230000001052 transient effect Effects 0.000 claims description 82
- 230000005404 monopole Effects 0.000 claims description 78
- 230000001070 adhesive effect Effects 0.000 claims description 30
- 239000000853 adhesive Substances 0.000 claims description 26
- 230000002441 reversible effect Effects 0.000 claims description 17
- 230000015556 catabolic process Effects 0.000 claims description 9
- 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
- 230000000087 stabilizing effect Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 210000003298 dental enamel Anatomy 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000002123 temporal effect Effects 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
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Abstract
A kind of electricity-saving type A.C. contactor being provided with power save unit, be made up of the first pressuring controling switch circuit, accumulator and the second pressuring controling switch circuit three part, 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 hold with S1, S2 of AC voltage respectively and are connected, and output port P1, P2 hold with A1, the A2 of the magnet exciting coil L in conventional AC contactor respectively and be connected; Wherein, N1 end, the first pressuring controling switch circuit, accumulator, the second pressuring controling switch circuit, N2 end are connected successively, P1 end is drawn from the junction of the first pressuring controling switch circuit and accumulator, and P2 end is drawn from the junction of accumulator and the second pressuring controling switch circuit.
Description
Technical field
The present invention relates to Low Voltage Electrical Apparatus, particularly relate to and a kind of there is the electricity saving function electricity-saving type A.C. contactor being provided with power save unit.
Background technology
A.C. contactor is a kind of application low-voltage electrical apparatus widely.Its operation principle utilizes electromagnet to drive moving contact (make contact) close with fixed contact (break contact) or be separated, and reaches the object switching on or off circuit.It is applicable to start or control 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 is primarily of dynamic iron core, static iron core, magnet exciting coil, back-moving spring, break contact, make contact composition.When magnet exciting coil connects AC220V, AC110V or AC380V voltage (being generally called AC220V, AC110V or AC380V is below AC voltage or field power supply), dynamic iron core closes with static iron core by the effect of the magnetic force of magnet exciting coil generation, the make contact linked with dynamic iron core also closes thereupon, and external circuit is just connected by this make contact; When the AC voltage on magnet exciting coil disconnects, dynamic iron core loss of excitation is also separated with static iron core by the effect of back-moving spring, and make contact resets and disconnects, and external circuit is just cut off thereupon.
In sum, the course of work of this traditional A.C. contactor can be divided into " adhesive ", " sticking ", " reset " three phases:
1, adhesive: magnet exciting coil and AC Voltage On state, dynamic and static iron core adhesive.In this stage, be the elastic force of the inertia and back-moving spring that overcome dynamic iron core, field power supply must provide larger power (be " adhesive power " hereinafter referred to as this power), and dynamic and static iron core could adhesive mutually;
2, sticking: magnet exciting coil continues and AC Voltage On state, dynamic and static iron core continues the state keeping adhesive.In this stage, field power supply need only provide less power (be " 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, dynamic and static iron core " reset " is separated.
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 to adhesive with sticking stage magnet exciting coil, therefore there is following critical defect:
1, meaningless power consumption: front already described, in adhesive and sticking stage, all passes to " identical " AC voltage, makes holding power excessive, cause meaningless electric energy loss in the magnet exciting coil of traditional A.C. contactor;
2, generate heat: the disastrous effect of meaningless electric energy loss institute association is " heat up heating ", time serious, even can burn the magnet exciting coil of traditional A.C. contactor;
3, the quality " with fortune " of adhesive action: when magnet exciting coil connects 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 connects the moment of AC voltage, and when the instantaneous value of AC voltage is lower, the then slow adhesive of described conventional AC contactor, in the case, its make contact or break contact just may burn because striking sparks serious.
For the critical defect that traditional A.C. contactor exists, the technical staff in electronics, electrical apparatus industry studying, devising multiple " electricity-saving circuit ", " electricity-saving appliance ", " energy saving ac contactor " for improving traditional A.C. contactor performance." energy-saving alternating current contactor unit " that " high-effect energy-saving ac contactor " that Chinese Patent Application No. is 97216246.1, application number are 94202133.9, application number be 201010144412.4 " a kind of energy saving ac contactor " disclose the achievement in research of respective patent applicant; Universities and colleges or the manufacturer on the ground such as Hangzhou, Changzhou, Zhuhai also have " electricity-saving appliance " for improving conventional AC contactor performance to come out.
Above-mentioned prior art, really for improving the performance of conventional AC contactor, having been made useful exploration and having achieved certain achievement, but the defect below ubiquity:
1, complex structure, is 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 " be then subject to the electromagnetic interference of the electrical equipment such as A.C. contactor itself or motor and cause internal processes execution error, generation " flyer " control by mistake, this controls by mistake and can breed disaster in some occasion;
The product price of 3, implementing to produce is too high, and the price of the QXJB type economizer of AC. contactor that such as Zhuhai City, Guangdong Province Co., Ltd produces is up to 1500 yuan/platform! The price of small-sized A.C. contactor just more than 20 yuan, 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 user very few.
4, because electronic circuit is complicated, electronic device used is many, and therefore, the economize on electricity of A.C. contactor controls part and is difficult to become one with A.C. contactor, and described economize on electricity controls part separately must establish a box, causes user installation inconvenience, wiring trouble.
Above defect is there is, so there is following situation: " current China electricity-saving type A.C. contactor has had certain market, but universal not enough, and traditional A.C. contactor is occupied an leading position at present on user uses just because of prior art.Main cause is that power-saving contactor price is more expensive, and user can't accept in disposable input, awaits country's increasing policy dynamics in the popularization of energy-saving type contactor, promotes the extensive use of energy-saving type contactor ".(list of references 1: money Jinchuan etc. alternating-current contactor energy-saving technology summary. China Electronics market conditions .2011 the 4th phase)
For the present situation of prior art, the present invention want Da to target be:
1, the starting point of " must to letter to essence; have simple and practical ability only and spread for a long time " is grasped, " application electric technology; rebuild traditional industry ", design a kind of electronic circuit as far as possible device simple, used as far as possible few, price as far as possible honest and clean, performance exceed prior art, " power save unit " that the power-saving alternating-current contactor of " to essence to letter " is special;
2, should can be used for transforming the online conventional AC contactor used to essence to " power save unit " of letter, making these A.C. contactors rise Grade becomes " electricity-saving type A.C. contactor ";
3, in the conventional AC contactor that will produce, the manufacturer of A.C. contactor should be produced novel " power-saving alternating-current contactor " integrated with " power save unit " to " power save unit " of smart extremely letter also accessible site.
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 being provided with power save unit, be made up of the first pressuring controling switch circuit, accumulator and the second pressuring controling switch circuit three part, 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 hold with S1, S2 of AC voltage respectively and are connected, and output port P1, P2 hold with A1, the A2 of the magnet exciting coil L in conventional AC contactor respectively and be connected; Further, four port networks described in the first described pressuring controling switch circuit, accumulator, the second pressuring controling switch circuit can form by following three kinds of methods:
A () N1 end, the first pressuring controling switch circuit, accumulator, the second pressuring controling switch circuit, N2 end are connected successively, P1 end is drawn from the junction of the first pressuring controling switch circuit and accumulator, and 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, N2 end are connected successively, P1 end is drawn from the junction of the second pressuring controling switch circuit and accumulator, and P2 end is held with N2 and is connected;
C () N1 end, accumulator, the first pressuring controling switch circuit, the second pressuring controling switch circuit, N2 end is connected successively, P1 end is held with N1 and is connected, and P2 end is drawn from the junction of accumulator and the first pressuring controling switch circuit.
The S1 end of described AC voltage, S2 end can reciprocity connectivity port, and the A1 end of described magnet exciting coil, A2 end also can reciprocity connectivity port.
The power save unit of A.C. contactor of the present invention combines with conventional AC contactor, can form novel electricity-saving type A.C. contactor.
The first described pressuring controling switch circuit is made up of monopole type transient voltage suppressor diode TVS1, accumulator is made up of electric capacity C, the second pressuring controling switch circuit is made up of monopole type transient voltage suppressor diode TVS2.
The circuit structure of the power save unit of described A.C. contactor is:
A the negative pole of () monopole type transient voltage suppressor diode TVS1 connects the P1 that N1 holds, positive pole the connects four port networks end of four described port networks; One end of electric capacity C also connects described P1 end, the P2 end of four port networks described in another termination; The positive pole of monopole type transient voltage suppressor diode TVS2 also connects described P2 end, and negative pole meets four described port network N2 and holds;
Or be (b): one end of the positive pole of described N1 end, monopole type transient voltage suppressor diode TVS1, the negative pole of TVS1, P1 end, electric capacity C, the other end of electric capacity C, P2 end, the negative pole of monopole type transient voltage suppressor diode TVS2, the positive pole of TVS2, N2 end are in series the power save unit of the A.C. contactor described in composition successively;
Or 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, one end of electric capacity C, the other end of electric capacity C, P2 end, N2 end are in series the power save unit of the A.C. contactor described in composition successively;
Or 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, one end of electric capacity C, the other end of electric capacity C, P2 end, N2 end are in series the power save unit of the A.C. contactor described in composition successively;
Or be (e): the negative pole of one end of described N1 end, P1 end, electric capacity C, the other end of electric capacity 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 hold the power save unit of the A.C. contactor be in series successively described in composition;
Or be (f): the positive pole of one end of described N1 end, P1 end, electric capacity C, the other end of electric capacity 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 hold the power save unit of the A.C. contactor be in series successively described in composition.
The common trait of the power save unit of the A.C. contactor of above-mentioned multiple circuit structure is; By composition after monopole type transient voltage suppressor diode TVS1, monopole type transient voltage suppressor diode TVS2, electric capacity C tri-electronic component series connection, its output P1 all draws from one end of electric capacity C, and another output P2 all draws from the other end of electric capacity C.
Described monopole type transient voltage suppressor diode TVS1 and TVS2 can substitute with ambipolar transient voltage suppressor diode, piezo-resistance and voltage stabilizing didoe are one of any simultaneously, also can with any two substituting respectively of ambipolar transient voltage suppressor diode, piezo-resistance and voltage stabilizing didoe, preferably, substitute with voltage stabilizing didoe simultaneously.。
The long operation result (the present invention only has three electronic components, and model machine is easy to do) of theory analysis and experimental prototype all proves, application the present invention, can obtain following beneficial effect:
1, inexpensive: for improvement of " power save unit " to essence to letter of conventional AC contactor performance in the present invention, only have monopole type transient voltage suppressor diode TVS1, monopole type transient voltage suppressor diode TVS2, electric capacity C tri-electronic components, total cost is less than 0.4 yuan.Only spend 0.4 yuan, conventional AC contactor just can be made to be promoted to " the electricity-saving type A.C. contactor " of premium properties, solve the problem that list of references 1 discloses: " current China electricity-saving type A.C. contactor has had certain market; but universal not enough, traditional A.C. contactor is occupied an leading position at present on user uses.Main cause is that power-saving contactor price is more expensive, user can't accept in disposable input, await country's increasing policy dynamics in the popularization of energy-saving type contactor, promote the extensive use of energy-saving type contactor ", for electricity-saving type A.C. contactor spread creates condition;
2, thing is beautiful: the volume of above-mentioned three electronic components is all fine, they can be integrated into the inside of conventional AC contactor, that manufacture integration, that outward appearance is pleasing electricity-saving type A.C. contactor.This point, prior art is all too far behind to catch up, be difficult to accomplish;
3, reliable: the reliability of electronic product and the quantity of electronic device used are 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 not being afraid of electromagnetic interference of forceful electric power, and therefore, not only cost is low, and reliability is high;
4, lengthen the life: traditional CJX2 A.C. contactor, a CJX2 A.C. contactor transformed with " power save unit " of the present invention, after the same place that room temperature is 34 ° of C runs 10 hours simultaneously, the temperature on the former surface has surpassed 50 ° of C, touches 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 shorter, otherwise useful life just can extend.Therefore, the present invention has " lengthening the life " function extending product useful life;
5, quick: the present invention is provided with " threshold voltage ", AC voltage be greater than " threshold voltage ", " pick-up voltage " enough high time, A.C. contactor just does 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 the electric arc of contact, prevent contact from burning inefficacy, has important effect to protection contact, prolongation contactor life-span.
6, economize on electricity: temperature rise is low is the visualize of economizing on electricity, and measured result also shows that electric energy of the present invention is greater than 80 ℅.
7, material-saving: the value choosing suitable electric capacity C, both can reduce the number of turns of magnet exciting coil L, can ensure electricity saving performance again.Play this advantage of the present invention, A.C. contactor just can be made to reduce the consumption of expensive enamel covered wire.
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 embodiment 1 of the present invention, 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 represents the power save unit (hereinafter referred to as " power save unit ") of the present invention and A.C. contactor, it is four port networks with two inputs and N1 and N2 end, two outputs and P1 and P2 end; Two connectivity ports that in described power save unit 100 101 is the first pressuring controling switch circuit, 102 is that accumulator, 103 is the second pressuring controling switch circuit, L is magnet exciting coil in conventional AC contactor, A1, A2 are it.
Composition graphs 2; N1 end, the first pressuring controling switch circuit 101, accumulator 102, second pressuring controling switch circuit 103, N2 end is 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, P2 holds and draws from the junction of accumulator 102 and the second pressuring controling switch circuit 103; Input port N1, N2 hold with S1, S2 of AC voltage respectively and are connected, and output port P1, P2 hold with A1, A2 of magnet exciting coil L respectively and be connected.
The S1 end of described AC voltage, S2 end can reciprocity connectivity port, and the A1 end of described magnet exciting coil, A2 end also can reciprocity connectivity port.
Power save unit 100 of the present invention combines with conventional AC contactor, can form novel electricity-saving type A.C. contactor.
Composition graphs 2, Fig. 3: the first pressuring controling switch circuit 101 is made up of monopole type transient voltage suppressor diode TVS1 again, accumulator 102 is made up of electric capacity C, the second pressuring controling switch circuit 103 is made up of monopole type transient voltage suppressor diode TVS2.
The circuit structure of the present embodiment 1 is: the output P1 that input N1 holds, positive pole connects power save unit 100 of the negative pole termination power save unit 100 of monopole type transient voltage suppressor diode TVS1 holds; The output P1 that one end of electric capacity C also connects power save unit 100 holds, and the output P2 of another termination power save unit 100 holds; The positive pole of monopole type transient voltage suppressor diode TVS2 also connects described P2 end, and the input N2 that negative pole connects power save unit 100 holds.
The course of work of the present embodiment 1 is set forth below in conjunction with accompanying drawing:
Composition graphs 2, Fig. 3, Figure 11: be from the mathematic(al) representation of the AC voltage of S1, S2 end input:
u=Umsin（2πft＋φ）
In above formula: u is the instantaneous value of AC voltage, 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, then the expression formula of the instantaneous value u of AC voltage is:
u=Umsin2πft
Its waveform as shown in figure 11.In figure: t represents the time.
During t=t1, AC Voltage On state, now, before AC Voltage On state, electric capacity C and magnet exciting coil L electric discharge terminates all, therefore the voltage at electric capacity C two ends (i.e. the output voltage of power save unit 100) UC=0; In this t=t1 moment: 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 above 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 UC=0 of power save unit 100, A.C. contactor not adhesive.
Composition graphs 1, professional and technical personnel should be clear: if be directly applied on magnet exciting coil L by the instantaneous value u1=Umsin2 π ft1 of the AC voltage in t=t1 moment, then 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 is only slightly larger than the elastic force of back-moving spring F, and A.C. contactor is adhesive reluctantly and feebly, and its contact subjects to scaling loss because the sparking time is longer.
Above-mentioned phenomenon is one of shortcoming of conventional AC contactor.
In the time domain of t1 ~ t10, AC voltage grading, monopole type transient voltage suppressor diode TVS1 continues to end not conducting, A.C. contactor still not adhesive.
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 is all 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, the output voltage UC=0 of power save unit 100, A.C. contactor still not adhesive.
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 electric capacity C and makes the powerful adhesive of A.C. contactor and enter sticking state.
Analyze so far, can reach a conclusion: power save unit 100 has to the random AC voltage connected the function automatically differentiated: as instantaneous value u=Umsin2 π ft < UT1 or the u=Umsin2 π ft < UT2 of AC voltage, the voltage U C=0 that described power save unit 100 exports, A.C. contactor not adhesive; As instantaneous value u=Umsin2 π ft >=UT1 or the u=Umsin2 π ft >=UT2 of AC voltage, the powerful adhesive of A.C. contactor.
Therefore, as long as select the value of sufficiently high UT1 and UT2 (being called for short UT1 or UT2 for " threshold voltage "), AC voltage just can provide larger " adhesive power ", can guarantee that A.C. contactor adhesive is strong and powerful.
In other words: as long as select reverse breakdown voltage sufficiently high monopole type transient voltage suppressor diode 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 ", the adhesive of A.C. contactor strong and powerful ground can be guaranteed.
In other words: the present invention is provided with " threshold voltage ", when AC voltage is greater than " threshold voltage ", A.C. contactor just does adhesive action.
Be provided with threshold voltage, can guarantee that A.C. contactor adhesive is strong and powerful, clear, sucting speed is fast.The feature of quick pick-up of the present invention, can reduce the electric arc of contact, prevent contact from burning inefficacy, and having important effect to protection contact, prolongation contactor life-span, is one of significant advantage of the present invention.
During t=t3, the voltage at electric capacity 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 that it turns off, it is equivalent to open circuit.
In the time domain of t3 ~ t20, because electric capacity C and magnet exciting coil L all contains electric energy, therefore, they do " damped oscillation " (in figure, E1, E2 are the envelope of damped oscillation) represented by Figure 11, 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 sticking state.
Analyze so far, can draw to draw a conclusion:
1, the electrical quantity of electric capacity C and magnet exciting coil L determines the slope of damped oscillation frequency f b and damped oscillation envelope.When magnet exciting coil L has been the situation of definite value, can, by the value of adjustment electric capacity C, the slope of damped oscillation frequency f b and damped oscillation envelope have been made to be the highest optimum value of electric energy.
2, reduce the number of turns of magnet exciting coil L, choose the value of suitable electric capacity C, the present invention also can be made to enter the best state of economize on electricity.
In brief: the value choosing suitable electric capacity C, the number of turns of magnet exciting coil L can be reduced.
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 200 circles, and application the present invention, still can obtain and be greater than 70% electric energy.Play this advantage of the present invention, A.C. contactor just can be made to 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, electric capacity C and magnet exciting coil L continues damped oscillation, and A.C. contactor continues to maintain sticking state.
During t=t4, the voltage U c=uc4 at electric capacity 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 electric capacity C.
During t=t5, the voltage U c=uc5 at electric capacity 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 ends, equivalence open circuit, electric capacity C and magnet exciting coil L damped oscillation, A.C. contactor continues to maintain sticking state.
In the time domain of t5 ~ t30, electric capacity C and magnet exciting coil L continues damped oscillation, and A.C. contactor continues to maintain 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, electric capacity C and magnet exciting coil L continues damped oscillation, and A.C. contactor continues to maintain sticking state.
During t=t6, the voltage U c=uc6 at electric capacity 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 electric capacity C.
The repetition so gone round and begun again, can maintain the sticking state of A.C. contactor.
Again in conjunction with Figure 11, can draw to draw a conclusion:
1, conventional AC contactor is all connected with AC voltage (or claiming full-time territory to be energized) in 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 at the local temporal of monopole type transient voltage suppressor diode TVS1 or monopole type transient voltage suppressor diode TVS2 short circuit conducting, and the time domain (namely the angle of flow is the time domain of Q3) of the time domain (namely the angle of flow is the time domain of Q1) of such as t2 ~ t3, the time domain (namely the angle of flow is the time domain of Q2) of t4 ~ t5, t6 ~ t7 to be energized energy storage to electric capacity C and magnet exciting coil L.
In brief: AC voltage, in the time domain of monopole type transient voltage suppressor diode TVS1 or TVS2 short circuit conducting, to be energized energy storage to electric capacity C and magnet exciting coil L.
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 charges (the such as angle of flow is the time domain of Q2) to electric capacity C.
In brief: when the reverse voltage at monopole type transient voltage suppressor diode TVS1 two ends is greater than its threshold voltage UT1, AC voltage charges to electric capacity 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 charges (the such as angle of flow is the time domain of Q1, Q3) to electric capacity C.
In brief: when the reverse voltage at monopole type transient voltage suppressor diode TVS2 two ends is greater than its threshold voltage UT2, AC voltage charges to electric capacity C.
The technology of " local temporal energising " of employing is that the present invention is economized on electricity one of mechanism.
Fig. 4 is the circuit theory diagrams of embodiment 2.Compare with embodiment 1, the present embodiment changes the polarity of monopole type transient voltage suppressor diode TVS1 and TVS2, namely becomes following method and connects: the negative pole of described N1 end, the positive pole of monopole type transient voltage suppressor diode TVS1, TVS1, P1 end, one end of electric capacity C, the other end of electric capacity 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 variation, 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: the first described pressuring controling switch circuit 101, second pressuring controling switch circuit 103, accumulator 102 form described power save unit 100:N1 end as follows, the first pressuring controling switch circuit 101, second pressuring controling switch circuit 103, accumulator 102, N2 end is connected successively, P1 end is drawn from the second pressuring controling switch circuit 103 with the junction of accumulator 102, and P2 end is held with N2 and is connected.
The feature of above-mentioned method of attachment is: described A2 end, P2 end, N2 end, S2 end are all connected to each other, and become for ease of connecting or being convenient to integrated common port.
Fig. 6 is the circuit theory diagrams of embodiment 3, compare with embodiment 1, the present embodiment changes the position of monopole type transient voltage suppressor diode TVS2, described TVS1, TVS2 are turned into the connection of " back-to-back " that positive pole is connected, and namely become following method and connect: the negative pole of the positive pole of described N1 end, the negative pole of monopole type transient voltage suppressor diode TVS1, TVS1, the positive pole of monopole type transient voltage suppressor diode TVS2, TVS2, P1 end, one end of electric capacity C, the other end of electric capacity C, P2 end, N2 end are composed in series described power save unit 100 successively.After having done such variation, its operation principle and the course of work are still identical with embodiment 1.
Fig. 7 is the circuit theory diagrams of embodiment 4, compare with embodiment 1, the present embodiment changes the position of monopole type transient voltage suppressor diode TVS2, described TVS1, TVS2 are turned into the connection of " face-to-face " that negative pole is connected, and namely become following method and connect: the positive pole of the negative pole of described N1 end, the positive pole of monopole type transient voltage suppressor diode TVS1, TVS1, the negative pole of monopole type transient voltage suppressor diode TVS2, TVS2, P1 end, one end of electric capacity C, the other end of electric capacity C, P2 end, N2 end are composed in series described power save unit 100 successively.After having done such variation, 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: the first described pressuring controling switch circuit 101, second pressuring controling switch circuit 103, accumulator 102 form described power save unit 100:N1 end as follows, accumulator 102, first pressuring controling switch circuit 101, second pressuring controling switch circuit 103, N2 end is connected successively, P1 end is held with N1 and is connected, and 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 end, N1 end, P1 end, A1 end are all connected to each other, and become for ease of connecting or being convenient to integrated common port.
Fig. 9 is the circuit theory diagrams of embodiment 5, compare with embodiment 1, the present embodiment changes the position of monopole type transient voltage suppressor diode TVS1, described TVS1, TVS2 are turned into the connection of " back-to-back " that positive pole is connected, and namely become following method and connect: the negative pole of one end of described N1 end, P1 end, electric capacity C, the other end of electric capacity 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 variation, its operation principle and the course of work are still identical with embodiment 1.
Figure 10 is the circuit theory diagrams of embodiment 6, compare with embodiment 1, the present embodiment changes the position of monopole type transient voltage suppressor diode TVS1, described TVS1, TVS2 are turned into the connection of " face-to-face " that negative pole is connected, and namely become following method and connect: the positive pole of one end of described N1 end, P1 end, electric capacity C, the other end of electric capacity 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 variation, 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 forms by after monopole type transient voltage suppressor diode TVS1, monopole type transient voltage suppressor diode TVS2, electric capacity C tri-electric series, its output P1 all draws from one end of electric capacity C, and another output P2 all draws from the other end of electric capacity C.
Described monopole type transient voltage suppressor diode TVS1 and TVS2 can substitute with ambipolar transient voltage suppressor diode, piezo-resistance and voltage stabilizing didoe are one of any simultaneously, also can with any two substituting respectively of ambipolar transient voltage suppressor diode, piezo-resistance and voltage stabilizing didoe, preferably, substitute with voltage stabilizing didoe simultaneously.
Above describe technical scheme of the present invention, all do not depart from the technical substitution of the essence of technical scheme of the present invention, all should in the scope of claim of the present invention.
Claims (1)
1. one kind is provided with the electricity-saving type A.C. contactor of power save unit, be made up of the first pressuring controling switch circuit, accumulator and the second pressuring controling switch circuit three part, be characterised in that: described in be provided with power save unit electricity-saving type A.C. contactor be four port networks, 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) and the second input port (N2) are connected with the first end (S1) of AC voltage and the second end (S2) respectively, and the first output port (P1) and the second output port (P2) are connected with the first end (A1) of magnet exciting coil (L) and the second end (A2) respectively;
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, 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 is made up of the first monopole type transient voltage suppressor diode (TVS1), accumulator is made up of electric capacity (C), the second pressuring controling switch circuit is made up of the second monopole type transient voltage suppressor diode (TVS2);
When the instantaneous value of described AC voltage is less than UT1 or is less than UT2, described A.C. contactor not adhesive; When the instantaneous value of AC voltage is not less than UT1 or is not less than UT2, the powerful adhesive of A.C. contactor, wherein, UT1 is the reverse breakdown voltage of the first monopole type transient voltage suppressor diode (TVS1); UT2 is the reverse breakdown voltage of the second monopole type transient voltage suppressor diode (TVS2);
Wherein, the first output port (P1) that the negative pole of the first monopole type transient voltage suppressor diode (TVS1) connects the first input end mouth (N1) of four described port networks, 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 four port networks described in 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 four described port networks.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310331141.7A CN103413725B (en) | 2013-08-01 | 2013-08-01 | Be provided with the electricity-saving type A.C. contactor of power save unit |
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| 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 |
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| CN103413725A CN103413725A (en) | 2013-11-27 |
| CN103413725B true CN103413725B (en) | 2015-10-28 |
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| 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 |
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| 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 |
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| 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 |
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|---|---|---|---|---|
| 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 |
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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 |
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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 |
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