CN103681109A - Contactor direct-current pull-in and holding circuit - Google Patents
Contactor direct-current pull-in and holding circuit Download PDFInfo
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- CN103681109A CN103681109A CN201310703191.3A CN201310703191A CN103681109A CN 103681109 A CN103681109 A CN 103681109A CN 201310703191 A CN201310703191 A CN 201310703191A CN 103681109 A CN103681109 A CN 103681109A
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Abstract
The invention relates to a contactor direct-current pull-in and holding circuit. The circuit is provided with an alternating-current input end, a direct-current output end and five main circuit modules which are a main loop circuit, a thyristor separation driving circuit, a zero crossing point detection circuit, a power-on delay circuit and a delay triggering circuit respectively, wherein the main loop circuit is composed of a rectifier bridge B1, a thyristor TR1 and a voltage dependent resistor RV1, the thyristor separation driving circuit is composed of a resistor R3, a resistor R4, a resistor R17, a resistor 23, an optocoupler O1 and a triode Q3, the zero crossing point detection circuit is composed of a rectifier bridge B2, a voltage stabilizing tube Z3, a resistor R5, a resistor R6, a resistor R7, a resistor R8 and an integrated operational amplifier U2B, the power-on delay circuit is composed of a diode D2, a resistor R9, a resistor R10, a resistor R11, a capacitor C4, a capacitor R5 and an integrated operational amplifier U2A, and the delay triggering circuit is composed of a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a capacitor C1, a capacitor C2, a capacitor C3, a diode D3, triodes Q1 and Q2 and an integrated circuit U1. According to the circuit, electromagnetic power consumption of a contactor is effectively reduced, and pull-in pulsation and noise of the contactor are eliminated.
Description
Technical field
The present invention relates to a kind of contactor attraction circuit, particularly the adhesive of a kind of contactor direct current and holding circuit.
Background technology
At present, the various power supply occasion contactors in daily productive life are all one of the most frequently used low-voltage electrical apparatuses, and it is mainly used in the alternating current circuit that remote frequent band carries connection and disjunction major loop.Existing contactor major part is all to adopt alternating current operation, and the break-make of namely directly controlling 220V or 380V alternating current realizes adhesive and the release of contactor.The advantage of this mode is that structure and control are comparatively simple, but it has the following shortcoming that is difficult to overcome:
(1) power consumption of alternating current operation contactor is large.Owing to adopting alternating current operation, what in the electromagnetic system of contactor, flow through is alternating current, and this will make the electromagnetism of contactor have compared with lossy.
(2) there is noise problem in alternating current operation contactor.Owing to adopting alternating current operation, the magnetic field of contactor also exists the problem of commutation, therefore causes the suction-combining force of contactor to have larger pulsation.
(3) alternating current operation contactor is high to environmental requirement.Due to when commutation the suction-combining force a little less than, so contactor the contact-making surface of upper lower armature is had relatively high expectations, if contact-making surface totally will not cause larger noise and larger the suction-combining force to decline.
Therefore, providing that a kind of circuit is simple, reasonable in design, performance safety is reliable, effect significant contactor direct current adhesive and holding circuit, is one of this technical field scientific research personnel problem that should address.
Summary of the invention
The object of the invention is to overcome the weak point of above-mentioned alternating current operation contactor, provide that a kind of circuit is simple, reasonable in design, performance safety reliable contactor direct current adhesive and holding circuit.
The technical solution adopted in the present invention is for achieving the above object: the adhesive of a kind of contactor direct current and holding circuit, it is characterized in that this circuit is provided with ac input end AC_L, AC_N, DC output end L1, L2 and five main circuit modules, be respectively: main loop circuit, thyristor isolated drive circuit, zero-crossing detection circuit, power-up time delay circuit and delay trigger circuit.Wherein main loop circuit is comprised of rectifier bridge B1, thyristor TR1 and piezo-resistance RV1; Thyristor isolated drive circuit is comprised of resistance R 3, resistance R 4, optocoupler O1, resistance R 23, triode Q3 and resistance R 17; Zero cross detection circuit is comprised of rectifier bridge B2, resistance R 5, resistance R 6, voltage-stabiliser tube Z3, resistance R 7, resistance R 8 and integrated transporting discharging U2B; Power-up time delay circuit is comprised of diode D2, resistance R 9, resistance R 10, capacitor C 5, resistance R 11, capacitor C 4 and integrated transporting discharging U2A; Delay trigger circuit is comprised of resistance R 12, resistance R 13, resistance R 14, resistance R 15, capacitor C 3, resistance R 16, diode D3, triode Q1, triode Q2, capacitor C 2, capacitor C 1 and integrated circuit U1.
Described ac input end AC_L is connected with 1 end of rectifier bridge B1; 2 ends of rectifier bridge B1 are connected with DC output end L1, and 4 ends of rectifier bridge B1 are connected with DC output end L2; Ac input end AC_N respectively with 2 ends of piezo-resistance RV1,2 ends of 2 ends of thyristor TR1, resistance R 4,1 end of rectifier bridge B2 be connected; 3 ends of rectifier bridge B1 respectively with 1 end of piezo-resistance RV1,1 end of 3 ends of thyristor TR1, resistance R 3,3 ends of rectifier bridge B2 be connected; 1 end of thyristor TR1 is connected with 1 end of resistance R 4,2 ends of optocoupler O1 respectively; 1 end of optocoupler O1 is connected with 2 ends of resistance R 3; 4 ends of optocoupler O1 are connected with 2 ends of resistance R 23; 3 ends of optocoupler O1 are connected with 3 ends of triode Q3; 1 end of resistance R 23,1 end of resistance R 7,4 ends of integrated circuit U1,1 end of 8 ends of integrated circuit U1, capacitor C 1,1 end of 1 end of capacitor C 3, diode D2,1 end of 1 end of resistance R 9, resistance R 10,1 end of 8 ends of integrated transporting discharging U2A, capacitor C 4 are connected with VCC respectively; 2 ends of triode Q1,2 ends of triode Q2,2 ends of triode Q3,2 ends of 1 end of integrated circuit U1, capacitor C 2,4 ends of 2 ends of capacitor C 1, rectifier bridge B2,2 ends of 2 ends of resistance R 6, voltage-stabiliser tube Z3,4 ends of 2 ends of resistance R 8, integrated transporting discharging U2A, 2 ends of 2 ends of capacitor C 5, resistance R 11,2 ends of capacitor C 4 are connected with GND respectively; 2 ends of rectifier bridge B2 are connected with 1 end of resistance R 5; 2 ends of resistance R 5 are connected with 1 end of resistance R 6,5 ends of 1 end of voltage-stabiliser tube Z3, integrated transporting discharging U2B respectively; 2 ends of resistance R 7 are connected with 1 end of resistance R 8,6 ends of integrated transporting discharging U2B respectively; 7 ends of integrated transporting discharging U2B are connected with 1 end of resistance R 12; 2 ends of diode D2 are connected with 2 ends of resistance R 9,2 ends of 1 end of capacitor C 5, integrated transporting discharging U2A respectively; 2 ends of resistance R 10 are connected with 3 ends of integrated transporting discharging U2A, 1 end of resistance R 11 respectively; 1 end of integrated transporting discharging U2A is connected with 1 end of resistance R 13; 2 ends of resistance R 12 are connected with 1 end of triode Q2; 2 ends of resistance R 13 are connected with 1 end of triode Q1; 3 ends of triode Q2 are connected with 2 ends of resistance R 16; 3 ends of triode Q1 are connected with 2 ends of resistance R 15; 1 end of resistance R 15 respectively with 1 end of resistance R 16,2 ends of 2 ends of resistance R 14, capacitor C 3,6 ends of 2 ends of integrated circuit U1, integrated circuit U1 be connected; 1 end of resistance R 14 is connected with 2 ends of diode D3; 1 end of diode D3 is connected with 3 ends of integrated circuit U1,2 ends of resistance R 17 respectively; 1 end of capacitor C 1 is connected with 5 ends of integrated circuit U1; 1 end of resistance R 17 is connected with 1 end of triode Q3; 7 ends of integrated circuit U1 are unsettled.
Beneficial effect of the present invention: DC operation contactor can effectively be avoided the above problem of alternating current operation.In the active power of the electromagnetic system consumption of alternating current operation contactor, core loss accounts for 70%, and short-loop loss accounts for 25%, and the copper loss of coil only accounts for 5%; And DC operation does not have core loss and short-loop loss, thereby the power consumption of electromagnetic system greatly reduces.Owing to adopting DC operation, there is not the problem of magnetic field commutator, the pulsation problem of the suction-combining force has also just thoroughly solved, and contactor does not have noise in the maintenance stage, and the requirement of armature contact-making surface has also been reduced.
The high direct voltage that has realized DC operation contactor by above connected mode the present invention starts the function keeping with DC low-voltage, greatly reduces the electromagnetism power consumption of existing contactor, has eliminated existing contactor the suction-combining force pulsation and noise problem.Circuit design advantages of simple of the present invention, superior performance, effect highly significant.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to according to embodiment provided by the invention, structure, details are as follows for feature:
Referring to Fig. 1, the adhesive of a kind of contactor direct current and holding circuit, this circuit is provided with ac input end AC_L, AC_N, DC output end L1, L2 and five main circuit modules, be respectively: main loop circuit, thyristor isolated drive circuit, zero-crossing detection circuit, power-up time delay circuit and delay trigger circuit.Wherein main loop circuit is comprised of rectifier bridge B1, thyristor TR1 and piezo-resistance RV1; Thyristor isolated drive circuit is comprised of resistance R 3, resistance R 4, optocoupler O1, resistance R 23, triode Q3 and resistance R 17; Zero cross detection circuit is comprised of rectifier bridge B2, resistance R 5, resistance R 6, voltage-stabiliser tube Z3, resistance R 7, resistance R 8 and integrated transporting discharging U2B; Power-up time delay circuit is comprised of diode D2, resistance R 9, resistance R 10, capacitor C 5, resistance R 11, capacitor C 4 and integrated transporting discharging U2A; Delay trigger circuit is comprised of resistance R 12, resistance R 13, resistance R 14, resistance R 15, capacitor C 3, resistance R 16, diode D3, triode Q1, triode Q2, capacitor C 2, capacitor C 1 and integrated circuit U1.
This contactor direct current adhesive is connected with the ac input end AC_L of holding circuit and 1 end of rectifier bridge B1; 2 ends of rectifier bridge B1 are connected with DC output end L1, and 4 ends of rectifier bridge B1 are connected with DC output end L2; Ac input end AC_N respectively with 2 ends of piezo-resistance RV1,2 ends of 2 ends of thyristor TR1, resistance R 4,1 end of rectifier bridge B2 be connected; 3 ends of rectifier bridge B1 respectively with 1 end of piezo-resistance RV1,1 end of 3 ends of thyristor TR1, resistance R 3,3 ends of rectifier bridge B2 be connected; 1 end of thyristor TR1 is connected with 1 end of resistance R 4,2 ends of optocoupler O1 respectively; 1 end of optocoupler O1 is connected with 2 ends of resistance R 3; 4 ends of optocoupler O1 are connected with 2 ends of resistance R 23; 3 ends of optocoupler O1 are connected with 3 ends of triode Q3; 1 end of resistance R 23,1 end of resistance R 7,4 ends of integrated circuit U1,1 end of 8 ends of integrated circuit U1, capacitor C 1,1 end of 1 end of capacitor C 3, diode D2,1 end of 1 end of resistance R 9, resistance R 10,1 end of 8 ends of integrated transporting discharging U2A, capacitor C 4 are connected with VCC respectively; 2 ends of triode Q1,2 ends of triode Q2,2 ends of triode Q3,2 ends of 1 end of integrated circuit U1, capacitor C 2,4 ends of 2 ends of capacitor C 1, rectifier bridge B2,2 ends of 2 ends of resistance R 6, voltage-stabiliser tube Z3,4 ends of 2 ends of resistance R 8, integrated transporting discharging U2A, 2 ends of 2 ends of capacitor C 5, resistance R 11,2 ends of capacitor C 4 are connected with GND respectively; 2 ends of rectifier bridge B2 are connected with 1 end of resistance R 5; 2 ends of resistance R 5 are connected with 1 end of resistance R 6,5 ends of 1 end of voltage-stabiliser tube Z3, integrated transporting discharging U2B respectively; 2 ends of resistance R 7 are connected with 1 end of resistance R 8,6 ends of integrated transporting discharging U2B respectively; 7 ends of integrated transporting discharging U2B are connected with 1 end of resistance R 12; 2 ends of diode D2 are connected with 2 ends of resistance R 9,2 ends of 1 end of capacitor C 5, integrated transporting discharging U2A respectively; 2 ends of resistance R 10 are connected with 3 ends of integrated transporting discharging U2A, 1 end of resistance R 11 respectively; 1 end of integrated transporting discharging U2A is connected with 1 end of resistance R 13; 2 ends of resistance R 12 are connected with 1 end of triode Q2; 2 ends of resistance R 13 are connected with 1 end of triode Q1; 3 ends of triode Q2 are connected with 2 ends of resistance R 16; 3 ends of triode Q1 are connected with 2 ends of resistance R 15; 1 end of resistance R 15 respectively with 1 end of resistance R 16,2 ends of 2 ends of resistance R 14, capacitor C 3,6 ends of 2 ends of integrated circuit U1, integrated circuit U1 be connected; 1 end of resistance R 14 is connected with 2 ends of diode D3; 1 end of diode D3 is connected with 3 ends of integrated circuit U1,2 ends of resistance R 17 respectively; 1 end of capacitor C 1 is connected with 5 ends of integrated circuit U1; 1 end of resistance R 17 is connected with 1 end of triode Q3; 7 ends of integrated circuit U1 are unsettled, are not connected with any other device.
The operation principle of circuit of the present invention is as follows: ac input end AC_L, AC_N connect 220V AC power, and DC output end L1, L2 connect the solenoid of contactor.When entering after AC power in AC_L, AC_N termination, power-up time delay circuit is first devoted oneself to work, controlling the angle of flow that delay trigger circuit generation is larger drives a higher starting voltage of major loop generation to make contactor adhesive smoothly through thyristor isolated drive circuit, after the delay time of power-up time delay circuit arrives, this circuit is deactivated, now delay trigger circuit will carry out work with a less angle of flow, thereby through thyristor isolated drive circuit, drive major loop to produce a lower maintenance voltage, keep in touch the normal adhesive of device.Zero testing circuit is used for providing a triggered time benchmark to delay trigger circuit.
Above-mentioned detailed description of the adhesive of contactor direct current and holding circuit being carried out with reference to embodiment, is illustrative rather than determinate, therefore in the variation and the modification that do not depart under general plotting of the present invention, within should belonging to protection scope of the present invention.
Claims (2)
1. contactor direct current adhesive and holding circuit, it is characterized in that this circuit is provided with ac input end AC_L, AC_N, DC output end L1, L2 and five main circuit modules, be main loop circuit, thyristor isolated drive circuit, zero-crossing detection circuit, power-up time delay circuit and delay trigger circuit; Wherein main loop circuit is comprised of rectifier bridge B1, thyristor TR1 and piezo-resistance RV1; Thyristor isolated drive circuit is comprised of resistance R 3, R4, R17, R23, optocoupler O1 and triode Q3; Zero cross detection circuit is comprised of rectifier bridge B2, voltage-stabiliser tube Z3, resistance R 5, R6, R7, R8 and integrated transporting discharging U2B; Power-up time delay circuit is comprised of diode D2, resistance R 9, R10, R11, capacitor C 4, C5 and integrated transporting discharging U2A; Delay trigger circuit is comprised of resistance R 12, R13, R14, R15, R16, capacitor C 1, C2, C3, diode D3, triode Q1, Q2 and integrated circuit U1.
2. contactor direct current according to claim 1 adhesive and holding circuit, is characterized in that this circuit ac input end AC_L is connected with 1 end of rectifier bridge B1; 2 ends of rectifier bridge B1 are connected with DC output end L1, and 4 ends of rectifier bridge B1 are connected with DC output end L2; Ac input end AC_N respectively with 2 ends of piezo-resistance RV1,2 ends of 2 ends of thyristor TR1, resistance R 4,1 end of rectifier bridge B2 be connected; 3 ends of rectifier bridge B1 respectively with 1 end of piezo-resistance RV1,1 end of 3 ends of thyristor TR1, resistance R 3,3 ends of rectifier bridge B2 be connected; 1 end of thyristor TR1 is connected with 1 end of resistance R 4,2 ends of optocoupler O1 respectively; 1 end of optocoupler O1 is connected with 2 ends of resistance R 3; 4 ends of optocoupler O1 are connected with 2 ends of resistance R 23; 3 ends of optocoupler O1 are connected with 3 ends of triode Q3; 1 end of resistance R 23,1 end of resistance R 7,4 ends of integrated circuit U1,1 end of 8 ends of integrated circuit U1, capacitor C 1,1 end of 1 end of capacitor C 3, diode D2,1 end of 1 end of resistance R 9, resistance R 10,1 end of 8 ends of integrated transporting discharging U2A, capacitor C 4 are connected with VCC respectively; 2 ends of triode Q1,2 ends of triode Q2,2 ends of triode Q3,2 ends of 1 end of integrated circuit U1, capacitor C 2,4 ends of 2 ends of capacitor C 1, rectifier bridge B2,2 ends of 2 ends of resistance R 6, voltage-stabiliser tube Z3,4 ends of 2 ends of resistance R 8, integrated transporting discharging U2A, 2 ends of 2 ends of capacitor C 5, resistance R 11,2 ends of capacitor C 4 are connected with GND respectively; 2 ends of rectifier bridge B2 are connected with 1 end of resistance R 5; 2 ends of resistance R 5 are connected with 1 end of resistance R 6,5 ends of 1 end of voltage-stabiliser tube Z3, integrated transporting discharging U2B respectively; 2 ends of resistance R 7 are connected with 1 end of resistance R 8,6 ends of integrated transporting discharging U2B respectively; 7 ends of integrated transporting discharging U2B are connected with 1 end of resistance R 12; 2 ends of diode D2 are connected with 2 ends of resistance R 9,2 ends of 1 end of capacitor C 5, integrated transporting discharging U2A respectively; 2 ends of resistance R 10 are connected with 3 ends of integrated transporting discharging U2A, 1 end of resistance R 11 respectively; 1 end of integrated transporting discharging U2A is connected with 1 end of resistance R 13; 2 ends of resistance R 12 are connected with 1 end of triode Q2; 2 ends of resistance R 13 are connected with 1 end of triode Q1; 3 ends of triode Q2 are connected with 2 ends of resistance R 16; 3 ends of triode Q1 are connected with 2 ends of resistance R 15; 1 end of resistance R 15 respectively with 1 end of resistance R 16,2 ends of 2 ends of resistance R 14, capacitor C 3,6 ends of 2 ends of integrated circuit U1, integrated circuit U1 be connected; 1 end of resistance R 14 is connected with 2 ends of diode D3; 1 end of diode D3 is connected with 3 ends of integrated circuit U1,2 ends of resistance R 17 respectively; 1 end of capacitor C 1 is connected with 5 ends of integrated circuit U1; 1 end of resistance R 17 is connected with 1 end of triode Q3; 7 ends of integrated circuit U1 are unsettled.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310703191.3A CN103681109A (en) | 2013-12-20 | 2013-12-20 | Contactor direct-current pull-in and holding circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310703191.3A CN103681109A (en) | 2013-12-20 | 2013-12-20 | Contactor direct-current pull-in and holding circuit |
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| CN103681109A true CN103681109A (en) | 2014-03-26 |
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| CN201310703191.3A Pending CN103681109A (en) | 2013-12-20 | 2013-12-20 | Contactor direct-current pull-in and holding circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109121280A (en) * | 2018-08-07 | 2019-01-01 | 中国原子能科学研究院 | A kind of reversing arrangement of switching magnet |
| CN110265260A (en) * | 2019-06-26 | 2019-09-20 | 浙江阿尔法电气有限公司 | A kind of frequency converter soft start contactor drive circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2899235Y (en) * | 2006-05-03 | 2007-05-09 | 溧阳市恒通电源***有限公司 | Overzero trigger of thyristor |
| US20110292558A1 (en) * | 2010-05-26 | 2011-12-01 | Delta Electronics, Inc. | Driving circuit for ac contactor |
| CN102347166A (en) * | 2011-09-20 | 2012-02-08 | 人民电器集团有限公司 | Working method of silent power-saving type alternating current contactor |
-
2013
- 2013-12-20 CN CN201310703191.3A patent/CN103681109A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2899235Y (en) * | 2006-05-03 | 2007-05-09 | 溧阳市恒通电源***有限公司 | Overzero trigger of thyristor |
| US20110292558A1 (en) * | 2010-05-26 | 2011-12-01 | Delta Electronics, Inc. | Driving circuit for ac contactor |
| CN102347166A (en) * | 2011-09-20 | 2012-02-08 | 人民电器集团有限公司 | Working method of silent power-saving type alternating current contactor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109121280A (en) * | 2018-08-07 | 2019-01-01 | 中国原子能科学研究院 | A kind of reversing arrangement of switching magnet |
| CN110265260A (en) * | 2019-06-26 | 2019-09-20 | 浙江阿尔法电气有限公司 | A kind of frequency converter soft start contactor drive circuit |
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Application publication date: 20140326 |