CN103871782A - Alternating-current contactor with voltage controlled switch circuit - Google Patents
Alternating-current contactor with voltage controlled switch circuit Download PDFInfo
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- CN103871782A CN103871782A CN201410126854.4A CN201410126854A CN103871782A CN 103871782 A CN103871782 A CN 103871782A CN 201410126854 A CN201410126854 A CN 201410126854A CN 103871782 A CN103871782 A CN 103871782A
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- 230000003068 static effect Effects 0.000 claims description 15
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Abstract
The invention discloses an alternating-current contactor with a voltage controlled switch circuit. The alternating-current contactor is characterized in that the voltage controlled switch circuit is a four-port network with a port N1, a port N2, a port P1 and a port P2, wherein the port N1 and the port N2 are two input ports, the port P1and the port P2 are two output ports, the input port N1 is connected with the S1 end of AC voltage and the 11 end of an auxiliary contact K, the output port P1 is connected with the 12 end of a movable break auxiliary contact K and is connected with the A1 end of a magnet exciting coil L, the input port N2 is connected with the S2 end of the AC voltage, and the output port P2 is connected with the A2 end of the magnet exciting coil L.
Description
Technical field
The present invention relates to Low Voltage Electrical Apparatus, relate in particular to a kind of " being provided with the A.C. contactor of pressuring controling switch circuit " that makes conventional AC contactor saves energy.
Background technology
A.C. contactor (Alternating Current Contactor) is a kind of application low-voltage electrical apparatus very widely, ends 2012, nearly 1,000,000,000 of the A.C. contactors of China's on-line operation, and to increase every year the speed increase of 8,000 ten thousand newly.Its operation principle is to utilize electromagnet drive moving contact (make contact) with fixed contact (break contact) closure or separate, and reaches the object that switches on or off circuit, 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 is mainly made up of moving iron core, static iron core, magnet exciting coil, back-moving spring, break contact, make contact.In the time that magnet exciting coil is connected AC220V, AC110V or AC380V voltage (being generally called below AC220V, AC110V or AC380V is AC voltage or field power supply), moving iron core be subject to magnet exciting coil produce magnetic force effect and with 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; In the time that AC voltage on magnet exciting coil disconnects, moving iron core loss of excitation is also subject to the effect of back-moving spring and separates with static iron core, and make contact resets and disconnects, and external circuit is just cut off thereupon.In A.C. contactor, this " with the contact of moving iron core interlock " has four groups, and wherein three groups are used for switching on or off the main contacts of " three-phase electricity ", " auxiliary contact " that another group is " dynamic circuit breaker " or " dynamic circuit connector "---for the control of system.
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 are connected, dynamic and static iron core adhesive.In this stage, for overcoming the moving inertia of 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, and " adhesive power " is larger, adhesive is more simply quicker;
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 just 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 " separates.
The purposes of A.C. contactor varies, and structure also varies, but their operation principle is all identical with Fig. 1.
Because adhesive all passes to identical AC voltage with sticking stage magnet exciting coil, therefore there is following critical defect in traditional A.C. contactor:
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, cause meaningless electric energy loss;
2, heating: the disastrous effect that meaningless electric energy loss produces is " heating heats up ", when serious, even can burn the magnet exciting coil of traditional A.C. contactor;
The critical defect existing for traditional A.C. contactor, the technical staff in electronics, electrical apparatus industry studies, has designed multiple for improving " electricity-saving circuit ", " electricity-saving appliance ", " energy saving ac contactor " of traditional A.C. contactor performance." a kind of energy saving ac contactor " that " energy-saving alternating current contactor unit ", the application number that Chinese Patent Application No. is 97216246.1 " high-effect energy-saving ac contactor ", application number is 94202133.9 is 201010144412.4 discloses patent applicant's achievement in research separately; Hangzhou, Changzhou, Zhuhai Deng Di universities and colleges or manufacturer are also useful on " electricity-saving appliance " appearance that improves conventional AC contactor performance.
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 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 " 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, generation " flyer " mistake control-this mistake control can breed disaster in some occasion!
3, the product price that enforcement is produced is too high, and the price of the QXJB type economizer of AC. contactor that for example Zhuhai City, Guangdong Province Co., Ltd produces 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 nearly hundred yuan, and so expensive " QXJB type economizer of AC. contactor " will make user very few.
4, due to electronic circuit complexity, electronic device used is many, and therefore, the economize on electricity control part of A.C. contactor is difficult to become one with A.C. contactor, and described economize on electricity control part must separately be established a box, causes user installation inconvenience, wiring trouble.
5, due to electronic circuit complexity, electronic device used is many, therefore, the power consumption (AC-DC transition loss, IC power consumption, actuator power consumption etc.) of the economize on electricity control part of A.C. contactor self will increase, and what have is even large to the stage comparable with the holding power of small-size contactor.
There is above defect just because of prior art, so there is following situation: " 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 user uses.Main cause is that power-saving contactor price is more expensive, and user can't accept in disposable input, awaits country and in the popularization of energy-saving type contactor, strengthens policy dynamics, promotes the extensive use of energy-saving type contactor ".(list of references 1: money Jinchuan etc. 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: grasping " to essence must to letter; have simple and practical ability only and spread for a long time " aim, " application electric technology; rebuild traditional industry ", design a kind of electronic circuit as far as possible device simple, used try one's best honest and clean, the performance of few, price of trying one's best exceed " being provided with the A.C. contactor of pressuring controling switch circuit " of " to the essence to letter " of prior art.
Summary of the invention
A kind of " being provided with the A.C. contactor of pressuring controling switch circuit ", is characterized in that: it is made up of pressuring controling switch circuit and conventional AC contactor two parts; Described pressuring controling switch circuit is four port networks that are provided with N1, N2, P1, tetra-ports of P2, and port N1, N2 are two input port, and P1, P2 are two output port; Described input port N1 was both connected and was also connected with 11 ends of conventional AC contactor it " dynamic circuit breaker auxiliary contact K " with the S1 end of AC voltage; Described output port P1 had both been connected with 12 ends of described " dynamic circuit breaker auxiliary contact K " and had also been connected with the A1 end of conventional AC contactor it " magnet exciting coil L "; Described input port N2 and the S2 of AC voltage end is connected, and described output port P2 holds and is connected with the A2 of described " magnet exciting coil L ".
S1 end, the S2 end of described AC voltage can connect in reciprocity.
11 ends, 12 ends of described " dynamic circuit breaker auxiliary contact K " can connect in reciprocity.
A1 end, the A2 end of described " magnet exciting coil L " also can connect in reciprocity.
The circuit structure of the pressuring controling switch circuit of four described ports and be with the connected mode of described dynamic circuit breaker auxiliary contact K:
(a), the pressuring controling switch circuit of four described ports is made up of ambipolar transient voltage suppressor diode TVS and storage capacitor C; After described dynamic circuit breaker auxiliary contact K is in parallel with ambipolar transient voltage suppressor diode TVS, one end is connected with described N1 end, and the other end is connected with described P1 end; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end.
Or for the pressuring controling switch circuit of (b), described four ports is made up of the first monopole type transient voltage suppressor diode TVS1, the second monopole type transient voltage suppressor diode TVS2 and storage capacitor C; 11 ends of described dynamic circuit breaker auxiliary contact K, the positive pole of the first monopole type transient voltage suppressor diode TVS1 are all connected with described N1 end; 12 ends of described dynamic circuit breaker auxiliary contact K, the positive pole of the second monopole type transient voltage suppressor diode TVS2 are all connected with described P1 end; The negative pole of the first monopole type transient voltage suppressor diode TVS1 is connected with the negative pole of the second monopole type transient voltage suppressor diode TVS2; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end.
Or for the pressuring controling switch circuit of (c), described four ports is made up of the 3rd monopole type transient voltage suppressor diode TVS3, the 4th monopole type transient voltage suppressor diode TVS4 and storage capacitor C; 11 ends of described dynamic circuit breaker auxiliary contact K, the negative pole of the 3rd monopole type transient voltage suppressor diode TVS3 are all connected with described N1 end; 12 ends of described dynamic circuit breaker auxiliary contact K, the negative pole of the 4th monopole type transient voltage suppressor diode TVS4 are all connected with described P1 end; The positive pole of the 3rd monopole type transient voltage suppressor diode TVS3 is connected with the positive pole of the 4th monopole type transient voltage suppressor diode TVS4; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end.
Or the pressuring controling switch circuit that is (d), described four ports is made up of gas discharge tube (gaseous discharge tube) GDT and storage capacitor C; After described dynamic circuit breaker auxiliary contact K is in parallel with gas discharge tube GDT, one end is connected with described N1 end, and the other end is connected with described P1 end; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end.
Or the pressuring controling switch circuit that is (e), described four ports is made up of semiconductor discharge tube (thyristor surge suppressors) TSS and storage capacitor C; After described dynamic circuit breaker auxiliary contact K is in parallel with semiconductor discharge tube TSS, one end is connected with described N1 end, and the other end is connected with described P1 end; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end.
Or for the pressuring controling switch circuit of (f), described four ports is restrained device (Electro-Static discharge) ESD by static and storage capacitor C forms; After described dynamic circuit breaker auxiliary contact K is in parallel with static supression device ESD, one end is connected with described N1 end, and the other end is connected with described P1 end; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end.
Or for the pressuring controling switch circuit of (g), described four ports is made up of varistor VDR and storage capacitor C; After described dynamic circuit breaker auxiliary contact K is in parallel with varistor VDR, one end is connected with described N1 end, and the other end is connected with described P1 end; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end.
Or for the pressuring controling switch circuit of (h), described four ports is made up of the first voltage stabilizing didoe DW1, the second voltage stabilizing didoe DW2 and storage capacitor C; 11 ends of described dynamic circuit breaker auxiliary contact K, the negative pole of the first voltage stabilizing didoe DW1 are all connected with described N1 end; 12 ends of described dynamic circuit breaker auxiliary contact K, the negative pole of the second voltage stabilizing didoe DW2 are all connected with described P1 end; The positive pole of the first voltage stabilizing didoe DW1 is connected with the positive pole of the second voltage stabilizing didoe DW2; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end.
Or for (i), the pressuring controling switch circuit of described four ports is made up of the 3rd voltage stabilizing didoe DW3, the 4th voltage stabilizing didoe DW4 and storage capacitor C; 11 ends of described dynamic circuit breaker auxiliary contact K, the positive pole of the 3rd voltage stabilizing didoe DW3 are all connected with described N1 end; 12 ends of described dynamic circuit breaker auxiliary contact K, the positive pole of the 4th voltage stabilizing didoe DW4 are all connected with described P1 end; The negative pole of the 3rd voltage stabilizing didoe DW3 is connected with the negative pole of the 4th voltage stabilizing didoe DW4; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end.
Application the present invention, can obtain following beneficial effect:
1, inexpensive: the extremely essence for improvement of conventional AC contactor performance in the present invention, to " pressuring controling switch circuit " of letter, only has two electronic devices (or three electronic devices), and total cost is less than 0.5 yuan.Only spend several maos, just can make conventional AC contactor be promoted to " the electricity-saving type A.C. contactor " of premium properties, solve 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 user uses.Main cause is that power-saving contactor price is more expensive, user can't accept in disposable input, await country and in the popularization of energy-saving type contactor, strengthen 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 two electronic devices (or three electronic devices) is all fine, can be integrated into them the inside of conventional AC contactor, manufactures the electricity-saving type A.C. contactor integrated, 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 is directly proportional to the quantity of electronic device used.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 two electronic devices (or 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, the sphere of action of AC voltage is wide, the present invention who is AC220V to field power supply, and AC voltage drop is during to 187V, still reliably adhesive and sticking;
5, economize on electricity: measured result also shows, the present invention has higher electric energy.
In order to survey electric energy of the present invention, just make model machine (only need several electronic devices, model machine is easy to do), measure respectively the index of following two kinds of A.C. contactors with " EPM8200 multifunctional electrical parameter measuring instrument ":
(1), do not add the present invention's's it " pressuring controling switch circuit " CJX2-1201 type conventional AC contactor (hereinafter to be referred as traditional part);
(2), by method of the present invention, described CJX2-1201 type conventional AC contactor adds novel " being provided with the A.C. contactor of pressuring controling switch circuit " (hereinafter to be referred as novel) that transformation forms after " pressuring controling switch circuit ".
Result is as follows:
Apparent power active power input current power factor (PF) apparent power power saving rate active power power saving rate tradition part: novel of 9.03va 2.6w 0.040A 0.288------: 1.59va 1.1w 0.008A 0.692 82% 58%
Above measured result shows: " active power power saving rate " of the present invention reaches 58%, and " apparent power power saving rate " reaches 82%.
6, rise PF: front already described, measured result shows: the power factor (PF) (Power factor is PF) of conventional AC contactor is only 0.288, and after application the present invention, PF rises to 0.692.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of conventional AC contactor;
Fig. 2 is the circuit theory diagrams of embodiment a;
Fig. 3 is the circuit theory diagrams of embodiment b;
Fig. 4 is the circuit theory diagrams of embodiment c;
Fig. 5 is the circuit theory diagrams of embodiment d:
Fig. 6 is the circuit theory diagrams of embodiment e:
Fig. 7 is the circuit theory diagrams of embodiment f:
Fig. 8 is the circuit theory diagrams of embodiment g:
Fig. 9 is the circuit theory diagrams of embodiment h:
Figure 10 is the circuit theory diagrams of embodiment i:
Figure 11 is the process chart of embodiment a:
Figure 12 is the equivalent circuit diagram of embodiment a in the time of t=t1;
Figure 13 is the equivalent circuit diagram of embodiment a in the time of t=t2;
Figure 14 is the equivalent circuit diagram of embodiment a in the time of t=t3;
Figure 15 is the equivalent circuit diagram of embodiment a in the time of t=t4;
Figure 16 is the equivalent circuit diagram of embodiment a in the time of t=t6;
Figure 17 is the equivalent circuit diagram of embodiment a in the time of t=t7;
Figure 18 is the equivalent circuit diagram of embodiment a in the time of t=t9.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described.
Fig. 2 is the circuit theory diagrams of the present invention's embodiment a.In Fig. 2: L is the magnet exciting coil in conventional AC contactor, two links that A1, A2 are it; K is conventional AC contactor it " dynamic circuit breaker auxiliary contact ", 11,12 two links that are it; Dashed rectangle 100 represents pressuring controling switch circuit of the present invention, and it is that to have two inputs be N1 and N2 end, two outputs four port networks that to be P1 hold with P2; Input port N1, N2 are connected with S1, the S2 end of AC voltage respectively, and output port P1, P2 hold and are connected with A1, the A2 of described magnet exciting coil L respectively.
S1 end, the S2 end of described AC voltage can connect in reciprocity.
11 ends, 12 ends of described " dynamic circuit breaker auxiliary contact K " can connect in reciprocity.
A1 end, the A2 end of described " magnet exciting coil L " also can connect in reciprocity.
The pressuring controling switch circuit 100 of four described ports is made up of ambipolar transient voltage suppressor diode TVS and storage capacitor C, its circuit structure and be with the connected mode of described dynamic circuit breaker auxiliary contact K: after described dynamic circuit breaker auxiliary contact K, ambipolar transient voltage suppressor diode TVS are in parallel, one end is connected with described N1 end, and the other end is held and is connected with described P1; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end.
Described pressuring controling switch circuit 100 is combined by described mode with conventional AC contactor, can form novel " being provided with the A.C. contactor of pressuring controling switch circuit ".
In conjunction with Fig. 2, Figure 11: from the mathematic(al) representation of the AC voltage of S1, S2 end input be:
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, 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 that time, u represent the instantaneous value of AC voltage.
The operation principle of ambipolar transient voltage suppressor diode TVS is: when its both end voltage UT is during lower than its puncture voltage VBR, described ambipolar transient voltage suppressor diode TVS is an insulator, present high impedance, be approximately open circuit, described ambipolar transient voltage suppressor diode TVS is cut-off state; In the time that the value of its both end voltage UT arrives the value of its puncture voltage VBR, just produce snowslide and present Low ESR, be approximately short circuit, described ambipolar transient voltage suppressor diode TVS is conducting state.
From above-mentioned operation principle:
1, described ambipolar transient voltage suppressor diode TVS can be puncture voltage VBR by the voltage clamp at its two ends;
2, the real votage control switch for controlled by its puncture voltage VBR of described ambipolar transient voltage suppressor diode TVS, in the time of its both end voltage UT < VBR, its cut-off; In the time that the value of its both end voltage UT arrives the value of its puncture voltage VBR, its conducting.
Set forth the course of work of the present embodiment a below in conjunction with accompanying drawing:
In conjunction with Fig. 2, Figure 11: when t=t1, AC voltage is connected, and now, described dynamic circuit breaker auxiliary contact K is closed short-circuit condition, the AC voltage of input is applied directly to the two ends of described magnet exciting coil L by it.
When t=t1, the instantaneous value of AC voltage: u1=Umsin2 π ft1 and u1 < VBR, described ambipolar transient voltage suppressor diode TVS is cut-off state; Meanwhile,
u1＝Umsin2πft1＜USL
In above formula, " the minimum pick-up voltage " that USL is A.C. contactor.Due to u1 < USL, therefore, the described not adhesive of A.C. contactor that is provided with pressuring controling switch circuit, described dynamic circuit breaker auxiliary contact K continues to remain closed the state of short circuit, and described u1 charges to storage capacitor C, magnet exciting coil L by described dynamic circuit breaker auxiliary contact K.Figure 12 is its equivalent electric circuit, in figure: the electric current that flows through dynamic circuit breaker auxiliary contact K when ik1 represents t=t1; Charging current when ic1 represents t=t1 on storage capacitor C; i
l1charging current while representing t=t1 on magnet exciting coil L.
When t=t2, the instantaneous value of AC voltage: u2=Umsin2 π ft2 and u2 < VBR, described ambipolar transient voltage suppressor diode TVS is still cut-off state; Meanwhile,
u2＝Umsin2πft2＞USL
Due to u2 > USL, therefore the described A.C. contactor adhesive that is provided with pressuring controling switch circuit enters sticking state; Described dynamic circuit breaker auxiliary contact K enters the open-circuit condition of disconnection; Storage capacitor C discharges to magnet exciting coil L.Figure 13 is its equivalent electric circuit, in figure: when ic2 represents t=t2, the discharging current on storage capacitor C; Freewheel current when iL2 represents t=t2 on magnet exciting coil L.
During to t=t3, the instantaneous value of AC voltage is u3=Umsin2 π ft3, now, the u3=VBR i.e. voltage U T value at described ambipolar transient voltage suppressor diode TVS two ends has reached the value of VBR, described ambipolar transient voltage suppressor diode TVS punctures conducting, be conducting state, the voltage U T at its two ends is clamped down on as its puncture voltage VBR, and AC voltage is also storage capacitor C charging energy-storing by the ambipolar transient voltage suppressor diode TVS that is conducting state for magnet exciting coil L provides " sticking " power.Figure 14 is its equivalent electric circuit, in figure: when iTVS3 represents t=t3, the On current of ambipolar transient voltage suppressor diode TVS; When ic3 represents t=t3, the charging current on storage capacitor C; Exciting current when iL3 represents t=t3 on magnet exciting coil L.
When t=t4, the instantaneous value of AC voltage is u4=Umsin2 π ft4, now, voltage U C between output P1 end and the P2 end of pressuring controling switch circuit 100 has risen to high value, the voltage U T=u4-UC < VBR at ambipolar transient voltage suppressor diode TVS two ends, ambipolar transient voltage suppressor diode TVS cut-off is turn-offed.Storage capacitor C discharges to magnet exciting coil L.Figure 15 is its equivalent electric circuit, in figure: when ic4 represents t=t4, ambipolar transient voltage suppressor diode TVS cut-off is closed and had no progeny, and storage capacitor C is to the electric current of magnet exciting coil L electric discharge; i
l4freewheel current while representing t=t4 on magnet exciting coil L.
Again in conjunction with Fig. 2, Figure 11: when t=t6, AC voltage entered S2 be just, S1 is negative negative half period.When t=t6, the instantaneous value of AC voltage is u6=Umsin2 π ft6, now:
1, the electricity that storage capacitor C is filled in the time of the positive half cycle of AC voltage does not all discharge, and remaining at P1 end is negative residual voltage Uc6 for positive P2 holds;
2, the voltage U T=u6+UC6=VBR at ambipolar transient voltage suppressor diode TVS two ends, therefore described ambipolar transient voltage suppressor diode TVS punctures conducting again, is conducting state;
3, storage capacitor C is by being the ambipolar transient voltage suppressor diode TVS electric discharge (after electric discharge finishes, just charging energy-storing again under the effect of AC voltage) of conducting state;
4, AC voltage charges to magnet exciting coil L.
Figure 16 is its equivalent electric circuit, in figure: when ic6 represents t=t6, the electric current on storage capacitor C; i
l6charging current while representing t=t6 on magnet exciting coil L; When iTVS6 represents t=t6, the On current of ambipolar transient voltage suppressor diode TVS.
When t=t7, the instantaneous value of AC voltage is u7=Umsin2 π ft7, now, voltage U C between output P2 end and the P1 end of pressuring controling switch circuit 100 has risen to high value (contrary when polarity and t=t4), the voltage U T=u7-UC < VBR at ambipolar transient voltage suppressor diode TVS two ends, ambipolar transient voltage suppressor diode TVS cut-off is turn-offed, and storage capacitor C discharges to magnet exciting coil L.Figure 17 is its equivalent electric circuit, in figure: when ic7 represents t=t7, ambipolar transient voltage suppressor diode TVS cut-off close have no progeny, storage capacitor C is to the electric current of magnet exciting coil L electric discharge (polarity with t=t4 time contrary); i
l7freewheel current while representing t=t7 on magnet exciting coil L.
When t=t9, AC voltage entered again S1 be just, S2 is the positive half cycle of bearing, when t=t9, the instantaneous value of AC voltage is u9=Umsin2 π ft9, corresponding during with t=t6, now:
1, the electricity that storage capacitor C is filled in the time of AC voltage negative half cycle does not all discharge, and remaining at P2 end is negative residual voltage Uc9 for positive P1 holds;
2, the voltage U T=u9+UC9=VBR at ambipolar transient voltage suppressor diode TVS two ends, therefore described ambipolar transient voltage suppressor diode TVS punctures conducting, is conducting state;
3, storage capacitor C is by being the ambipolar transient voltage suppressor diode TVS electric discharge (electric discharge finish after, just charging energy-storing under the effect of AC voltage) of conducting state;
4, AC voltage charges to magnet exciting coil L.
Figure 18 is its equivalent electric circuit, in figure: when ic9 represents t=t9, the electric current on storage capacitor C; i
l9charging current while representing t=t9 on magnet exciting coil L; When iTVS9 represents t=t9, the On current of ambipolar transient voltage suppressor diode TVS.
So circulation, the present embodiment has just completed described " adhesive " of the A.C. contactor that is provided with pressuring controling switch circuit and the course of work of " sticking ".
Known in sum:
1, in attracting process, for overcoming the moving inertia of iron core and the elastic force of back-moving spring, AC power supplies must provide larger " adhesive power ", and this adhesive power provides by the described dynamic circuit breaker auxiliary contact K that is closed short-circuit condition.After attracting process completes, described dynamic circuit breaker auxiliary contact K is just open-circuit condition always.
In brief; The function of dynamic circuit breaker auxiliary contact K is to guarantee the present invention's adhesive reliably.
2, in the sticking stage, AC power supplies need only provide less " holding power ", and this holding power provides by the ambipolar transient voltage suppressor diode TVS of described periodicity conducting.
In brief; The function of ambipolar transient voltage suppressor diode TVS is for the invention provides holding power by it.
3, in the time of described ambipolar transient voltage suppressor diode TVS conducting, storage capacitor C charging energy-storing;
4,, in the time that described ambipolar transient voltage suppressor diode TVS ends, energy is released in storage capacitor C electric discharge.
Described dynamic circuit breaker auxiliary contact K, ambipolar transient voltage suppressor diode TVS and described storage capacitor C work in coordination by above-described mode, have jointly completed described " adhesive " of the A.C. contactor that is provided with pressuring controling switch circuit and the course of work of " sticking ".
Fig. 3 is the circuit theory diagrams of embodiment b, and it is made up of pressuring controling switch circuit 100 and conventional AC contactor two parts; Described pressuring controling switch circuit 100 is four port networks that are provided with N1, N2, P1, tetra-ports of P2, it is identical with embodiment a with the method for attachment of outside each port, and it is made up of the first monopole type transient voltage suppressor diode TVS1, the second monopole type transient voltage suppressor diode TVS2 and storage capacitor C; Circuit structure and be with the connected mode of the dynamic circuit breaker auxiliary contact K in conventional AC contactor: 11 ends of described dynamic circuit breaker auxiliary contact K, the positive pole of the first monopole type transient voltage suppressor diode TVS1 are all connected with described N1 end; 12 ends of described dynamic circuit breaker auxiliary contact K, the positive pole of the second monopole type transient voltage suppressor diode TVS2 are all connected with described P1 end; The negative pole of the first monopole type transient voltage suppressor diode TVS1 is connected with the negative pole of the second monopole type transient voltage suppressor diode TVS2; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end.
The circuit structure of the present embodiment and embodiment a are basic identical, and difference is: the present embodiment has substituted the ambipolar transient voltage suppressor diode TVS in embodiment a with the first monopole type transient voltage suppressor diode TVS1 and the second monopole type transient voltage suppressor diode TVS2.
The course of work of the present embodiment is identical with embodiment a.
Fig. 4 is the circuit theory diagrams of embodiment c, and it is made up of pressuring controling switch circuit 100 and conventional AC contactor two parts; Described pressuring controling switch circuit 100 is four port networks that are provided with N1, N2, P1, tetra-ports of P2, it is identical with embodiment a with the method for attachment of outside each port, and it is made up of the 3rd monopole type transient voltage suppressor diode TVS3, the 4th monopole type transient voltage suppressor diode TVS4 and storage capacitor C; Circuit structure and be with the connected mode of the dynamic circuit breaker auxiliary contact K in conventional AC contactor: 11 ends of described dynamic circuit breaker auxiliary contact K, the negative pole of the 3rd monopole type transient voltage suppressor diode TVS3 are all connected with described N1 end; 12 ends of described dynamic circuit breaker auxiliary contact K, the negative pole of the 4th monopole type transient voltage suppressor diode TVS4 are all connected with described P1 end; The positive pole of the 3rd monopole type transient voltage suppressor diode TVS3 is connected with the positive pole of the 4th monopole type transient voltage suppressor diode TVS4; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end.
The circuit structure of the present embodiment and embodiment a are basic identical, and difference is: the present embodiment has substituted the ambipolar transient voltage suppressor diode TVS in embodiment a with the 3rd monopole type transient voltage suppressor diode TVS3 and the 4th monopole type transient voltage suppressor diode TVS4.
The course of work of the present embodiment is identical with embodiment a.
Fig. 5 is the circuit theory diagrams of embodiment d, and it is made up of pressuring controling switch circuit 100 and conventional AC contactor two parts; Described pressuring controling switch circuit 100 is four port networks that are provided with N1, N2, P1, tetra-ports of P2, and it is identical with embodiment a with the method for attachment of outside each port, and it is made up of gas discharge tube GDT and storage capacitor C; Circuit structure and be with the connected mode of the dynamic circuit breaker auxiliary contact K in conventional AC contactor: after described dynamic circuit breaker auxiliary contact K, gas discharge tube GDT is in parallel, one end is connected with described N1 end, and the other end is held and is connected with described P1; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end.
The circuit structure of the present embodiment and embodiment a are basic identical, and difference is: the present embodiment has substituted the ambipolar transient voltage suppressor diode TVS in embodiment a with gas discharge tube GDT.
The course of work of the present embodiment is identical with embodiment a.
Fig. 6 is the circuit theory diagrams of embodiment e, and it is made up of pressuring controling switch circuit 100 and conventional AC contactor two parts; Described pressuring controling switch circuit 100 is four port networks that are provided with N1, N2, P1, tetra-ports of P2, and it is identical with embodiment a with the method for attachment of outside each port, and it is made up of semiconductor discharge tube TSS and storage capacitor C; Circuit structure and be with the connected mode of the dynamic circuit breaker auxiliary contact K in conventional AC contactor: after described dynamic circuit breaker auxiliary contact K, semiconductor discharge tube TSS is in parallel, one end is connected with described N1 end, and the other end is held and is connected with described P1; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end.
The circuit structure of the present embodiment and embodiment a are basic identical, and difference is: the present embodiment has substituted the ambipolar transient voltage suppressor diode TVS in embodiment a with semiconductor discharge tube TSS.
The course of work of the present embodiment is identical with embodiment a.
Fig. 7 is the circuit theory diagrams of embodiment f, and it is made up of pressuring controling switch circuit 100 and conventional AC contactor two parts; Described pressuring controling switch circuit 100 is four port networks that are provided with N1, N2, P1, tetra-ports of P2, and it is identical with embodiment a with the method for attachment of outside each port, and it restrains device ESD by static and storage capacitor C forms; Circuit structure and be with the connected mode of the dynamic circuit breaker auxiliary contact K in conventional AC contactor: described dynamic circuit breaker auxiliary contact K, static restrain device ESD and be in parallel after one end be connected with described N1 end, the other end is held and is connected with described P1; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end.
The circuit structure of the present embodiment and embodiment a are basic identical, and difference is: the present embodiment is restrained device ESD with static and substituted the ambipolar transient voltage suppressor diode TVS in embodiment a.
The course of work of the present embodiment is identical with embodiment a.
Fig. 8 is the circuit theory diagrams of embodiment g, and it is made up of pressuring controling switch circuit 100 and conventional AC contactor two parts; Described pressuring controling switch circuit 100 is four port networks that are provided with N1, N2, P1, tetra-ports of P2, and it is identical with embodiment a with the method for attachment of outside each port, and it is made up of varistor VDR and storage capacitor C; Circuit structure and be with the connected mode of the dynamic circuit breaker auxiliary contact K in conventional AC contactor: after described dynamic circuit breaker auxiliary contact K, varistor VDR is in parallel, one end is connected with described N1 end, and the other end is held and is connected with described P1; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end.
The circuit structure of the present embodiment and embodiment a are basic identical, and difference is: the present embodiment has substituted the ambipolar transient voltage suppressor diode TVS in embodiment a with varistor VDR.
The course of work of the present embodiment is identical with embodiment a.
Fig. 9 is the circuit theory diagrams of embodiment h, and it is made up of pressuring controling switch circuit 100 and conventional AC contactor two parts; Described pressuring controling switch circuit 100 is four port networks that are provided with N1, N2, P1, tetra-ports of P2, it is identical with embodiment a with the method for attachment of outside each port, and it is made up of the first voltage stabilizing didoe DW1, the second voltage stabilizing didoe DW2 and storage capacitor C; Circuit structure and be with the connected mode of the dynamic circuit breaker auxiliary contact K in conventional AC contactor: 11 ends of described dynamic circuit breaker auxiliary contact K, the negative pole of the first voltage stabilizing didoe DW1 are all connected with described N1 end; 12 ends of described dynamic circuit breaker auxiliary contact K, the negative pole of the second voltage stabilizing didoe DW2 are all connected with described P1 end; The positive pole of the first voltage stabilizing didoe DW1 is connected with the positive pole of the second voltage stabilizing didoe DW2; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end.
The circuit structure of the present embodiment and embodiment a are basic identical, and difference is: for the present embodiment, the first voltage stabilizing didoe DW1, the second voltage stabilizing didoe DW2 have substituted the ambipolar transient voltage suppressor diode TVS in embodiment a.
The course of work of the present embodiment is identical with embodiment a.
Figure 10 is the circuit theory diagrams of embodiment i, and it is made up of pressuring controling switch circuit 100 and conventional AC contactor two parts; Described pressuring controling switch circuit 100 is four port networks that are provided with N1, N2, P1, tetra-ports of P2, it is identical with embodiment a with the method for attachment of outside each port, and it is made up of the 3rd voltage stabilizing didoe DW3, the 4th voltage stabilizing didoe DW4 and storage capacitor C; Circuit structure and be with the connected mode of the dynamic circuit breaker auxiliary contact K in conventional AC contactor: 11 ends of described dynamic circuit breaker auxiliary contact K, the positive pole of the 3rd voltage stabilizing didoe DW3 are all connected with described N1 end; 12 ends of described dynamic circuit breaker auxiliary contact K, the positive pole of the 4th voltage stabilizing didoe DW4 are all connected with described P1 end; The negative pole of the 3rd voltage stabilizing didoe DW3 is connected with the negative pole of the 4th voltage stabilizing didoe DW4; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end.
The circuit structure of the present embodiment and embodiment a are basic identical, and difference is: for the present embodiment, the 3rd voltage stabilizing didoe DW3, the 4th voltage stabilizing didoe DW4 have substituted the ambipolar transient voltage suppressor diode TVS in embodiment a.
The course of work of the present embodiment is identical with embodiment a.
More than disclose technical scheme of the present invention, and be illustrated by above-described embodiment.Those skilled in the art are to be understood that: above-described embodiment is of the present invention illustrating; not limit the invention in the described scope of above-described embodiment; all modification of doing according to training centre of the present invention, modification or alternative, the protection range Inner that all should define at the present invention " claims ".
Claims (2)
1. one kind is provided with the A.C. contactor of pressuring controling switch circuit, it is characterized in that: described pressuring controling switch circuit is four port networks that are provided with N1, N2, P1, tetra-ports of P2, port N1, N2 are two input port, and P1, P2 are two output port; Described input port N1 was both connected and was also connected with 11 ends of dynamic circuit breaker auxiliary contact K with the S1 end of AC voltage; Described output port P1 had both been connected with 12 ends of described dynamic circuit breaker auxiliary contact K and had also been connected with the A1 end of magnet exciting coil L; Described input port N2 is connected with the S2 of AC voltage end, and described output port P2 is connected with the A2 end of described magnet exciting coil L;
The circuit structure of the pressuring controling switch circuit of four described ports and be with the connected mode of described dynamic circuit breaker auxiliary contact K:
(a), the pressuring controling switch circuit of four described ports is made up of ambipolar transient voltage suppressor diode TVS and storage capacitor C; After described dynamic circuit breaker auxiliary contact K is in parallel with ambipolar transient voltage suppressor diode TVS, one end is connected with described N1 end, and the other end is connected with described P1 end; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end;
Or for the pressuring controling switch circuit of (b), described four ports is made up of the first monopole type transient voltage suppressor diode TVS1, the second monopole type transient voltage suppressor diode TVS2 and storage capacitor C; 11 ends of described dynamic circuit breaker auxiliary contact K, the positive pole of the first monopole type transient voltage suppressor diode TVS1 are all connected with described N1 end; 12 ends of described dynamic circuit breaker auxiliary contact K, the positive pole of the second monopole type transient voltage suppressor diode TVS2 are all connected with described P1 end; The negative pole of the first monopole type transient voltage suppressor diode TVS1 is connected with the negative pole of the second monopole type transient voltage suppressor diode TVS2; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end;
Or for the pressuring controling switch circuit of (c), described four ports is made up of the 3rd monopole type transient voltage suppressor diode TVS3, the 4th monopole type transient voltage suppressor diode TVS4 and storage capacitor C; 11 ends of described dynamic circuit breaker auxiliary contact K, the negative pole of the 3rd monopole type transient voltage suppressor diode TVS3 are all connected with described N1 end; 12 ends of described dynamic circuit breaker auxiliary contact K, the negative pole of the 4th monopole type transient voltage suppressor diode TVS4 are all connected with described P1 end; The positive pole of the 3rd monopole type transient voltage suppressor diode TVS3 is connected with the positive pole of the 4th monopole type transient voltage suppressor diode TVS4; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end;
Or the pressuring controling switch circuit that is (d), described four ports is made up of gas discharge tube (gaseous discharge tube) GDT and storage capacitor C; After described dynamic circuit breaker auxiliary contact K is in parallel with gas discharge tube GDT, one end is connected with described N1 end, and the other end is connected with described P1 end; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end;
Or the pressuring controling switch circuit that is (e), described four ports is made up of semiconductor discharge tube (thyristor surge suppressors) TSS and storage capacitor C; After described dynamic circuit breaker auxiliary contact K is in parallel with semiconductor discharge tube TSS, one end is connected with described N1 end, and the other end is connected with described P1 end; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end;
Or for the pressuring controling switch circuit of (f), described four ports is restrained device (Electro-Static discharge) ESD by static and storage capacitor C forms; After described dynamic circuit breaker auxiliary contact K is in parallel with static supression device ESD, one end is connected with described N1 end, and the other end is connected with described P1 end; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end;
Or for the pressuring controling switch circuit of (g), described four ports is made up of varistor VDR and storage capacitor C; After described dynamic circuit breaker auxiliary contact K is in parallel with varistor VDR, one end is connected with described N1 end, and the other end is connected with described P1 end; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end;
Or for the pressuring controling switch circuit of (h), described four ports is made up of the first voltage stabilizing didoe DW1, the second voltage stabilizing didoe DW2 and storage capacitor C; 11 ends of described dynamic circuit breaker auxiliary contact K, the negative pole of the first voltage stabilizing didoe DW1 are all connected with described N1 end; 12 ends of described dynamic circuit breaker auxiliary contact K, the negative pole of the second voltage stabilizing didoe DW2 are all connected with described P1 end; The positive pole of the first voltage stabilizing didoe DW1 is connected with the positive pole of the second voltage stabilizing didoe DW2; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end;
Or for (i), the pressuring controling switch circuit of described four ports is made up of the 3rd voltage stabilizing didoe DW3, the 4th voltage stabilizing didoe DW4 and storage capacitor C; 11 ends of described dynamic circuit breaker auxiliary contact K, the positive pole of the 3rd voltage stabilizing didoe DW3 are all connected with described N1 end; 12 ends of described dynamic circuit breaker auxiliary contact K, the positive pole of the 4th voltage stabilizing didoe DW4 are all connected with described P1 end; The negative pole of the 3rd voltage stabilizing didoe DW3 is connected with the negative pole of the 4th voltage stabilizing didoe DW4; One end of storage capacitor C is connected with described P1 end, and the other end is connected with described P2 end; Described P2 end is connected with described N2 end.
2. the A.C. contactor that is provided with pressuring controling switch circuit as claimed in claim 1, is characterized in that:
The S1 end of described AC voltage, S2 end are preferably and can reciprocity connect;
11 ends, 12 ends of described " dynamic circuit breaker auxiliary contact K " are preferably and can reciprocity connect;
The A1 end of described " magnet exciting coil L ", A2 end are preferably and can reciprocity connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410126854.4A CN103871782A (en) | 2014-03-31 | 2014-03-31 | Alternating-current contactor with voltage controlled switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410126854.4A CN103871782A (en) | 2014-03-31 | 2014-03-31 | Alternating-current contactor with voltage controlled switch circuit |
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| Publication Number | Publication Date |
|---|---|
| CN103871782A true CN103871782A (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410126854.4A Withdrawn CN103871782A (en) | 2014-03-31 | 2014-03-31 | Alternating-current contactor with voltage controlled switch circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553291A (en) * | 2015-12-08 | 2016-05-04 | 宁波市镇海华泰电器厂 | Power-saving AC contactor for AC-DC conversion |
-
2014
- 2014-03-31 CN CN201410126854.4A patent/CN103871782A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553291A (en) * | 2015-12-08 | 2016-05-04 | 宁波市镇海华泰电器厂 | Power-saving AC contactor for AC-DC conversion |
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