CN1767118A - Electricity-saving controller of AC contactor - Google Patents
Electricity-saving controller of AC contactor Download PDFInfo
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- CN1767118A CN1767118A CN 200510061255 CN200510061255A CN1767118A CN 1767118 A CN1767118 A CN 1767118A CN 200510061255 CN200510061255 CN 200510061255 CN 200510061255 A CN200510061255 A CN 200510061255A CN 1767118 A CN1767118 A CN 1767118A
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Abstract
The invention discloses an electricity-saving controller of a ac touching device, which is formed by resistance R2, R3,R4,R5,R6, diode D1,D2,D3,D4,D5,D6,D7, and film capacitance C1,C2,C3, an absorbing control circuit formed by voltage stabilizer diode Z1 and single direction controlled silicon Q1, a large current absorbing circuit and a small current holding circuit, wherein it uses the capacitance voltage-dividing to provide the pulsation dc small current needed by commutated iron core closed holding to the ac touching coil.
Description
Technical field
The present invention relates to low-voltage circuit, relate in particular to a kind of A.C. contactor, specifically a kind of electricity-saving controller of A.C. contactor.
Background technology
The contactor that adopts ac electromagnetism system accounts for the power consumption of gross power more than 90% on magnetic hysteresis, eddy current and short-circuited conducting sleeve in routine is used, the active power major part of coil also becomes heat and loses.In addition, sticking and start unstablely, vibration noise is big, and the coil temperature rise height has shortened useful life of contactor.
Adopt the contactor of direct solenoid system, as shown in Figure 1.Alternating current 220V voltage is powered to magnetizing coil behind bridge rectifier after the series capacitance step-down again, so becomes the little electric current of low-voltage after the step-down.When energized, the travel switch K in parallel with electric capacity makes the capacitor C short circuit, so the 220V high voltage is directly excitatory for the magnetizing coil high-voltage large current behind bridge rectifier.Because travel switch and interlock unshakable in one's determination, unshakable in one's determination before closure, travel switch is just opened, decompression capacitor is inserted energizing loop, and this moment, exciting curent became little electric current by big current conversion, and suction can diminish suddenly when closed, cause contact and iron coring vibration big, make making capacity low, even reliably adhesive, thereby influence the normal use of product.
Summary of the invention
What patent of the present invention solved is:
1, contactor ac electromagnetism system power consumption is big, vibration noise is big, defectives such as coil temperature rise height.
2, the contact and the iron coring vibration that cause when closing a floodgate of above-mentioned direct solenoid system is big, and adhesive is unreliable, the problem that making capacity is low.
The technical scheme that addresses the above problem employing is: the electricity-saving controller of A.C. contactor comprises resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, diode D7, thin-film capacitor C1, electrochemical capacitor C2, electrochemical capacitor C3, voltage stabilizing didoe Z1 and one-way SCR Q1, it is characterized in that described diode D3, diode D5, diode D6, diode D7 constitutes full-wave rectifying circuit, be connected to both ends of power after its input tandem thin-film capacitor C 1, its output is connected to inductance L 1 two ends; Described diode D1 anode is connected to the negative electrode of power input AC1 and diode D2, be connected to the negative electrode of described diode D1 and the anode of diode D2 behind the series arm parallel resistance R2 that electrochemical capacitor C2, resistance R 3 and electrochemical capacitor C3 constitute, be connected across the two ends of electrochemical capacitor C3 after resistance R 4 and resistance R 5 series connection, be connected across the two ends of resistance R 5 after voltage stabilizing didoe Z1 and resistance R 6 series connection; The negative electrode of described one-way SCR Q1 is connected to the anode of described diode D2 and diode D4, and its anode is connected to inductance L 1, and the control utmost point is connected to the anode of voltage stabilizing didoe Z1; The negative electrode of described diode D4 is connected to power input AC2.
Electricity-saving controller circuit of the present invention is on the basis of existing direct solenoid system, adopt a kind of electronic switch to replace travel switch, thereby it is stable to reach pickup time, guarantees the reliable adhesive of contact, reduces vibration, improves the purpose of making capacity.In foregoing circuit, by diode D1, diode D2, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, electrochemical capacitor C2, electrochemical capacitor C3 and voltage stabilizing didoe Z1 constitute the adhesive control circuit, be used to control big electric current pickup time, trigger the saturation conduction and the shutoff of electronic switch-one-way SCR.Constitute big electric current attraction circuit by full-wave rectifying circuit, magnetizing coil L1, one-way SCR Q1, diode D2, under the condition of one-way SCR Q1 saturation conduction, provide adhesive required D.C. high-current for the coil L1 of A.C. contactor.Constitute little electric current holding circuit by full-wave rectifying circuit, magnetizing coil L1 and thin-film capacitor C1, provide through the iron core closure of rectification to ac contactor coil by capacitance partial pressure and keep the little electric current of required pulsating direct current.Thereby, the electricity-saving controller of A.C. contactor of the present invention, the energy-saving run mode that adopts big electric current adhesive, little electric current to keep, thus realized the purpose that the A.C. contactor adhesive is reliable, reduce to vibrate, eliminate noise, reduce temperature rise, power-saving running.
As a further improvement on the present invention, also be provided with the protective circuit that constitutes by piezo-resistance RV1 and resistance R 1 parallel connection,, improved the interference free performance of electricity-saving controller for whole circuit provides the overvoltage surge protection at described power input.
Description of drawings
Fig. 1 is the circuit theory diagrams of former A.C. contactor direct solenoid system controller.
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
Figure 1 shows that the schematic diagram of existing A.C. contactor direct solenoid system controller, alternating current 220V voltage is given magnetizing coil L1 power supply again behind full-wave bridge rectifier after series capacitance C step-down, travel switch K is in parallel with capacitor C, when closing a floodgate and interlock unshakable in one's determination make the capacitor C short circuit, reach the excitatory low voltage sustain of high pressure.The shortcoming front of the controller of this structure was mentioned, and was not repeated.
With reference to Fig. 2, the electricity-saving controller of A.C. contactor of the present invention comprises resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, diode D7, thin-film capacitor C1, electrochemical capacitor C2, electrochemical capacitor C3, voltage stabilizing didoe Z1 and one-way SCR Q1, described diode D3, diode D5, diode D6, diode D7 constitute full-wave rectifying circuit, be connected to both ends of power after its input tandem thin-film capacitor C 1, its output is connected to inductance L 1 two ends; Described diode D1 anode is connected to the negative electrode of power input AC1 and diode D2, be connected to the negative electrode of described diode D1 and the anode of diode D2 behind the series arm parallel resistance R2 that electrochemical capacitor C2, resistance R 3 and electrochemical capacitor C3 constitute, be connected across the two ends of electrochemical capacitor C3 after resistance R 4 and resistance R 5 series connection, be connected across the two ends of resistance R 5 after voltage stabilizing didoe Z1 and resistance R 6 series connection; The negative electrode of described one-way SCR Q1 is connected to the anode of described diode D2 and diode D4, and its anode is connected to inductance L 1, and the control utmost point is connected to the anode of voltage stabilizing didoe Z1; The negative electrode of described diode D4 is connected to power input AC2.The protective circuit that is made of piezo-resistance RV1 and resistance R 1 parallel connection is connected across both ends of power.
In foregoing circuit, by diode D1, diode D2, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, electrochemical capacitor C2, electrochemical capacitor C3 and voltage stabilizing didoe Z1 constitute the adhesive control circuit, be used to control big electric current pickup time, trigger the saturation conduction and the shutoff of electronic switch-one-way SCR.Constitute big electric current attraction circuit by full-wave rectifying circuit, magnetizing coil L1, one-way SCR Q1, diode D2, under the condition of one-way SCR Q1 saturation conduction, provide adhesive required D.C. high-current for the coil L1 of A.C. contactor.Constitute little electric current holding circuit by full-wave rectifying circuit, magnetizing coil L1 and thin-film capacitor C1, provide through the iron core closure of rectification to ac contactor coil by capacitance partial pressure and keep the little electric current of required pulsating direct current.
The concrete course of work of the present invention is as follows:
Ac control power supply is by power input AC1, AC2 and circuit communication of the present invention, in energising first positive half wave of moment, power input AC1 for just, power input AC2 is for negative, ac control power supply by diode D1 by electrochemical capacitor C2, resistance R 3, electrochemical capacitor C3 and diode D2 loop to the charging of two electric capacity and can be full of moment.Electrochemical capacitor C3 energy storage metapedes is so that voltage-stabiliser tube Z1 reverse breakdown, and electrochemical capacitor C3 satisfies the required trigger current of turn-on condition by voltage-stabiliser tube Z1 for one-way SCR Q1 provides, and begins simultaneously by resistance R 4, resistance R 5 discharges.
After the one-way SCR Q1 conducting, in each negative half-wave, electric current arrives input AC1 from power input AC2 through diode D7, inductance L 1, one-way SCR Q1, diode D2 and forms a complete loop, and like this, ac control power supply almost total head is added on the magnetizing coil L1.Meanwhile, in each positive half wave, power supply all offers electric current after dividing potential drop of magnetizing coil L1 by thin-film capacitor C1, diode D6, diode D5, makes iron core and contact fast and reliable closure.
Electrochemical capacitor C3 is through after the discharge of certain hour, and its current potential is not enough to make voltage-stabiliser tube Z1 reverse breakdown again, and one-way SCR Q1 trigger current turn-offs by the back.At this moment, big electric current attracting process is finished, and A.C. contactor contact and iron core are reliably closed.One-way SCR Q1 closes and to have no progeny, ac control power supply by thin-film capacitor C1 dividing potential drop, and the full-wave rectifying circuit rectification after, provide pulsation to keep little electric current for magnetizing coil L1.Resistance R 2 provides discharge loop for electrochemical capacitor C2, and after the outage of assurance ac control power supply, electrochemical capacitor C2 institute accumulate can be able to drain rapidly.Piezo-resistance RV1, resistance R 1 parallel connection provide the overvoltage surge protection to circuit, and for thin-film capacitor C1 provides discharge loop, guarantee wiring safety, improve the antijamming capability of electricity-saving controller.
What should be understood that is: the foregoing description is just to explanation of the present invention, rather than limitation of the present invention, and any innovation and creation that do not exceed in the connotation scope of the present invention all fall within protection scope of the present invention.
Claims (2)
1, the electricity-saving controller of A.C. contactor comprises resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, diode D7, thin-film capacitor C1, electrochemical capacitor C2, electrochemical capacitor C3, voltage stabilizing didoe Z1 and one-way SCR Q1, it is characterized in that described diode D3, diode D5, diode D6, diode D7 constitute full-wave rectifying circuit, be connected to both ends of power after its input tandem thin-film capacitor C 1, its output is connected to inductance L 1 two ends; Described diode D1 anode is connected to the negative electrode of power input AC1 and diode D2, be connected to the negative electrode of described diode D1 and the anode of diode D2 behind the series arm parallel resistance R2 that electrochemical capacitor C2, resistance R 3 and electrochemical capacitor C3 constitute, be connected across the two ends of electrochemical capacitor C3 after resistance R 4 and resistance R 5 series connection, be connected across the two ends of resistance R 5 after voltage stabilizing didoe Z1 and resistance R 6 series connection; The negative electrode of described one-way SCR Q1 is connected to the anode of described diode D2 and diode D4, and its anode is connected to inductance L 1, and the control utmost point is connected to the anode of voltage stabilizing didoe Z1; The negative electrode of described diode D4 is connected to power input AC2.
2, the electricity-saving controller of A.C. contactor as claimed in claim 1 is characterized in that also being provided with the protective circuit that is made of piezo-resistance RV1 and resistance R 1 parallel connection at described power input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510061255XA CN100501896C (en) | 2005-10-21 | 2005-10-21 | Electricity-saving controller of AC contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510061255XA CN100501896C (en) | 2005-10-21 | 2005-10-21 | Electricity-saving controller of AC contactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1767118A true CN1767118A (en) | 2006-05-03 |
| CN100501896C CN100501896C (en) | 2009-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510061255XA Active CN100501896C (en) | 2005-10-21 | 2005-10-21 | Electricity-saving controller of AC contactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871783A (en) * | 2014-03-31 | 2014-06-18 | 宁波市镇海华泰电器厂 | Power-saving circuit of alternating current contactor |
| CN110138198A (en) * | 2019-04-23 | 2019-08-16 | 浙江德力西电器有限公司 | A kind of alternating current tracting magnet control circuit based on reduction temperature rise |
-
2005
- 2005-10-21 CN CNB200510061255XA patent/CN100501896C/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871783A (en) * | 2014-03-31 | 2014-06-18 | 宁波市镇海华泰电器厂 | Power-saving circuit of alternating current contactor |
| CN110138198A (en) * | 2019-04-23 | 2019-08-16 | 浙江德力西电器有限公司 | A kind of alternating current tracting magnet control circuit based on reduction temperature rise |
| CN110138198B (en) * | 2019-04-23 | 2024-04-30 | 浙江德力西电器有限公司 | Alternating current traction electromagnet control circuit based on temperature rise reduction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100501896C (en) | 2009-06-17 |
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