CN101867303B - Intelligent electricity-saving device of AC/DC contactor - Google Patents
Intelligent electricity-saving device of AC/DC contactor Download PDFInfo
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- CN101867303B CN101867303B CN2010101830406A CN201010183040A CN101867303B CN 101867303 B CN101867303 B CN 101867303B CN 2010101830406 A CN2010101830406 A CN 2010101830406A CN 201010183040 A CN201010183040 A CN 201010183040A CN 101867303 B CN101867303 B CN 101867303B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention relates to an intelligent electricity-saving device of AC/DC contactor, comprising a microprocessor (1), an AC/DC switching circuit (2), a low-power consumption holding circuit (3), a high/low voltage switching circuit (4), an output circuit (5), a switch change-over circuit (6), a first isolating circuit (7), a voltage detection circuit (8), a second isolating circuit (9), a power factor calibration circuit (10) and a surge suppression power-supply filter circuit (11). The intelligent electricity-saving device AC/DC contactor in the invention can greatly prolong the service life of the contactor, lower energy consumption and reduce noise.
Description
(1) technical field
The present invention relates to a kind of electricity-saving appliance, especially relate to a kind of intelligent electricity-saving device of AC/DC contactor, belong to the electrical equipment control technical field.
(2) background technology
At present, common contactor on the market generally adopts the mode of direct incoming transport electricity that it is supplied power.The contactor of this type of mode is not enough below existing:
(1) lack in poor reliability, useful life: owing to adopt alternating current directly to supply power; Suck when tending to cause contactor because of line voltage is unstable, time inhales pine and even do not inhale; So; Can bring great arcing and damage to contacts of contactor, even can therefore strengthen and burn the probability of contactor line bag, thereby shorten the useful life of contactor greatly.
(2) energy consumption is high: because contactor leans on alternating current warp packet generation magnetic field to carry out adhesive; Alternating current will produce induced current in the loop of closure; It is eddy current; Heating will cause eddy current loss in the online bag of eddy current, not only expended electric energy greatly, and high temperature will reduce the useful life of contactor line bag greatly.
(3) noise is big: will produce drone hum when alternating current during through the line bag, form noise pollution.
(3) summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, provide a kind of and can prolong contactor useful life greatly, reduce its energy consumption, reduce the intelligent electricity-saving device of AC/DC contactor of its noise.
The objective of the invention is to realize like this: a kind of intelligent electricity-saving device of AC/DC contactor; Include microprocessor, AC/DC change-over circuit, low-power consumption holding circuit, height voltage conversion circuit, output circuit, switch switching circuit, buffer circuit one, voltage detecting circuit, buffer circuit two, power factor correction circuits and surge and suppress electric source filter circuit; Alternating current inserts surge and suppresses electric source filter circuit, buffer circuit two and height voltage conversion circuit; Said surge suppresses the output access power factor calibration circuit of electric source filter circuit; The output of said power factor correction circuits inserts the AC/DC change-over circuit; The output of said buffer circuit two links to each other with voltage detecting circuit; Said AC/DC change-over circuit is respectively to microprocessor, low-power consumption holding circuit, voltage detecting circuit and switch switching circuit power supply; Said voltage detecting circuit links to each other with the input of microprocessor, and the output of said microprocessor links to each other with display circuit with key circuit, and the control end of said microprocessor links to each other with buffer circuit one; The output of said buffer circuit one links to each other with switch switching circuit with the height voltage conversion circuit; The output of said low-power consumption holding circuit links to each other with the input of height voltage conversion circuit, and the output of said height voltage conversion circuit inserts output circuit, and the output of said output circuit links to each other with switch switching circuit;
Said voltage detecting circuit includes dividing potential drop reference circuit and sample circuit; Said dividing potential drop reference circuit includes amplifier U4A, and 3 pin of said amplifier U4A link to each other with high level 5V through resistance R 9, and 3 pin of said amplifier U4A are through resistance R 10 ground connection; 2 pin of said amplifier U4A link to each other with 1 pin; 1 pin of said amplifier U4A divides four the tunnel, the one tunnel to meet high level 2.5V, a tunnel through capacitor C 5 ground connection, a tunnel through capacitor C 6 ground connection, a tunnel and link to each other with resistance R 12 1 ends, and said resistance R 12 other ends divide two-way; One the tunnel through capacitor C 7 ground connection, and another road directly connects microprocessor; Said sample circuit includes amplifier U4B and coupler L2, and alternating current one tunnel is through 4 pin of resistance R 24, R25 and R26 access coupler L2, and 3 pin of coupler L2 are inserted on another road through resistance R 27, R28 and R29; Be connected to a resistance R 30 between 1 pin of coupler L2 and 2 pin, 1 pin of said coupler L2 links to each other with 6 pin of amplifier U4B through resistance R 31, and 2 pin one tunnel of said coupler L2 link to each other with high level 2.5V; Another road links to each other with 5 pin of amplifier U4B through resistance R 32; 6 pin one tunnel of said amplifier U4B are through capacitor C 14 ground connection, and another road links to each other with 7 pin of amplifier U4B through resistance R 34, and 7 pin of said amplifier U4B link to each other with resistance R 33 1 ends; Said resistance R 33 other ends divide three the tunnel; One the tunnel through capacitor C 8 ground connection, and one the tunnel links to each other with high level 5V through diode D10, and microprocessor is inserted on another road;
Said height voltage conversion circuit includes control circuit and commutation circuit; Said control circuit includes controllable silicon Q1 and controllable silicon Q2; Two-phase alternating current links to each other with 1 pin of controllable silicon Q1 and controllable silicon Q2 respectively; 1 pin of said controllable silicon Q1 links to each other with 3 pin of controllable silicon Q1 through resistance R 1, and 3 pin of said controllable silicon Q1 link to each other with 4 pin of photoelectrical coupler U1 through resistance R 3, and 2 pin of said controllable silicon Q1 link to each other with 6 pin of photoelectrical coupler U1; 1 pin of said controllable silicon Q2 links to each other with 3 pin of controllable silicon Q2 through resistance R 2; 3 pin of said controllable silicon Q2 link to each other with 4 pin of photoelectrical coupler U2 through resistance R 4, and 2 pin of said controllable silicon Q2 link to each other with 6 pin of photoelectrical coupler U2, and 1 pin of said photoelectrical coupler U1 meets high level 5V through resistance R 5; Link to each other with 1 pin of photoelectrical coupler U2 after 2 pin of said photoelectrical coupler U1 link to each other with 3 pin, link to each other with the switching signal output port of microprocessor after 2 pin of said photoelectrical coupler U2 link to each other with 3 pin; 1 pin of the bridge rectifier D 2 of said commutation circuit and 2 pin link to each other with 2 pin of controllable silicon Q1 and controllable silicon Q2 in the control circuit respectively; 3 pin of said bridge rectifier D 2 link to each other with contactor as output port with 4 pin; Be serially connected with diode D16 and D17 between 3 pin of said bridge rectifier D 2 and 4 pin, 3 pin of said bridge rectifier D 2 insert the output of low-power consumption holding circuit through diode D15 and D14;
Said low-power consumption holding circuit includes secondary coil, diode D4, voltage-stabiliser tube D6 and capacitor C 3, and said secondary coil one end is an output, and the other end is an earth terminal; The output of secondary coil links to each other with the positive pole of diode D4; The negative pole of said diode D4 divides three the tunnel, the one tunnel through capacitor C 3 ground connection, and one the tunnel through voltage-stabiliser tube D6 ground connection; Another road is output and links to each other with the input of height voltage conversion circuit, and said secondary coil accesses in the coupling coil of AC/DC change-over circuit.
Workflow of the present invention is:
(1) microprocessor will compare through the voltage of decompression testing circuit input and the magnitude of voltage in preset and the microprocessor; When input voltage during greater than predeterminated voltage; Microprocessor control height voltage conversion circuit output AC high voltage; Open the switch switching circuit simultaneously, alternating current makes contactor be in attracting state;
(2) microprocessor control height voltage conversion circuit switches to the output LOW voltage DC mode after the adhesive of contactor line bag, will keep the attracting state of contactor line bag through the low-voltage DC input contactor line bag of low-power consumption holding circuit output;
(3) after the contactor adhesive, microprocessor compares input voltage and preset drop away voltage value, and when input voltage was lower than drop away voltage, microprocessor was arranged at closed condition with switch switching circuit, made contactor thread off immediately; When input voltage is higher than drop away voltage; Microprocessor compares input voltage and preset rolling piezoelectric voltage value again; When finding that input voltage is lower than the rolling piezoelectric voltage, microprocessor picks up counting immediately, if input voltage is lower than preset rolling piezoelectric voltage in the preset timing period always; Microprocessor is the off switch commutation circuit immediately, makes contactor thread off.
The invention has the beneficial effects as follows:
(1) utilizes microprocessor that input voltage is controlled, guaranteed the stability of input voltage;
(2) only when starting, use alternating current that the line bag is magnetized, immediately change low-voltage DC over to and keep pattern, significantly reduced the generation of eddy current loss, reduced energy consumption, reduced the caloric value of contactor line bag, prolonged the useful life of contactor; Also stopped the generation of AC noise simultaneously.
(4) description of drawings
Fig. 1 is a circuit structure block diagram of the present invention.
Fig. 2 is the dividing potential drop reference circuit of voltage detecting circuit of the present invention.
Fig. 3 is the sample circuit of voltage detecting circuit of the present invention.
Fig. 4 is the control circuit of switch switching circuit of the present invention.
Fig. 5 is the commutation circuit of switch switching circuit of the present invention.
Fig. 6 is the circuit diagram of low-power consumption holding circuit of the present invention.
Among the figure:
(5) embodiment
Referring to Fig. 1; The present invention relates to a kind of intelligent electricity-saving device of AC/DC contactor; Include microprocessor 1, AC/DC change-over circuit 2, low-power consumption holding circuit 3, height voltage conversion circuit 4, output circuit 5, switch switching circuit 6, buffer circuit 1, voltage detecting circuit 8, buffer circuit 29, power factor correction circuits 10 and surge and suppress electric source filter circuit 11; Alternating current inserts surge and suppresses electric source filter circuit 11, buffer circuit 29 and height voltage conversion circuit 4; Said surge suppresses the output access power factor calibration circuit 10 of electric source filter circuit 11; The output of said power factor correction circuits 10 inserts AC/DC change-over circuit 2, and the output of said buffer circuit 29 links to each other with voltage detecting circuit 8, and said AC/DC change-over circuit 2 is respectively to microprocessor 1, low-power consumption holding circuit 3, voltage detecting circuit 8 and switch switching circuit 6 power supplies; Said voltage detecting circuit 8 links to each other with the input of microprocessor 1; The output of said microprocessor 1 links to each other with display circuit 13 with key circuit 12, and the control end of said microprocessor 1 links to each other with buffer circuit 1, and the output of said buffer circuit 1 links to each other with switch switching circuit 6 with height voltage conversion circuit 4; The output of said low-power consumption holding circuit 3 links to each other with the input of height voltage conversion circuit 4; The output of said height voltage conversion circuit 4 inserts output circuit 5, and the output of said output circuit 5 links to each other with switch switching circuit 6, and the control end of said switch switching circuit 6 links to each other with contactor 14;
Said voltage detecting circuit 8 includes dividing potential drop reference circuit and sample circuit, and respectively as shown in Figures 2 and 3, said dividing potential drop reference circuit includes amplifier U4A; 3 pin of said amplifier U4A link to each other with high level 5V through resistance R 9; 3 pin of said amplifier U4A are through resistance R 10 ground connection, and 2 pin of said amplifier U4A link to each other with 1 pin, and 1 pin of said amplifier U4A divides four the tunnel; One the tunnel meets high level 2.5V, a tunnel through capacitor C 5 ground connection, a tunnel through capacitor C 6 ground connection, a tunnel links to each other with resistance R 12 1 ends; Said resistance R 12 other ends divide two-way, and one the tunnel through capacitor C 7 ground connection, and another road directly connects microprocessor 1; Said sample circuit includes amplifier U4B and coupler L2, and alternating current one tunnel is through 4 pin of resistance R 24, R25 and R26 access coupler L2, and 3 pin of coupler L2 are inserted on another road through resistance R 27, R28 and R29; Be connected to a resistance R 30 between 1 pin of coupler L2 and 2 pin, 1 pin of said coupler L2 links to each other with 6 pin of amplifier U4B through resistance R 31, and 2 pin one tunnel of said coupler L2 link to each other with high level 2.5V; Another road links to each other with 5 pin of amplifier U4B through resistance R 32; 6 pin one tunnel of said amplifier U4B are through capacitor C 14 ground connection, and another road links to each other with 7 pin of amplifier U4B through resistance R 34, and 7 pin of said amplifier U4B link to each other with resistance R 33 1 ends; Said resistance R 33 other ends divide three the tunnel; One the tunnel through capacitor C 8 ground connection, and one the tunnel links to each other with high level 5V through diode D10, and microprocessor 1 is inserted on another road;
Said height voltage conversion circuit 4 includes control circuit and commutation circuit; Respectively like Fig. 4 and shown in Figure 5; Said control circuit includes controllable silicon Q1 and controllable silicon Q2, and two-phase alternating current links to each other with 1 pin of controllable silicon Q1 and controllable silicon Q2 respectively, and 1 pin of said controllable silicon Q1 links to each other with 3 pin of controllable silicon Q1 through resistance R 1; 3 pin of said controllable silicon Q1 link to each other with 4 pin of photoelectrical coupler U1 through resistance R 3; 2 pin of said controllable silicon Q1 link to each other with 6 pin of photoelectrical coupler U1, and 1 pin of said controllable silicon Q2 links to each other with 3 pin of controllable silicon Q2 through resistance R 2, and 3 pin of said controllable silicon Q2 link to each other with 4 pin of photoelectrical coupler U2 through resistance R 4; 2 pin of said controllable silicon Q2 link to each other with 6 pin of photoelectrical coupler U2; 1 pin of said photoelectrical coupler U1 meets high level 5V through resistance R 5, links to each other with 1 pin of photoelectrical coupler U2 after 2 pin of said photoelectrical coupler U1 link to each other with 3 pin, links to each other with the switching signal output port of microprocessor 1 after 2 pin of said photoelectrical coupler U2 link to each other with 3 pin; 1 pin of the bridge rectifier D 2 of said commutation circuit and 2 pin link to each other with 2 pin of controllable silicon Q1 and controllable silicon Q2 in the control circuit respectively; 3 pin of said bridge rectifier D 2 link to each other with contactor as output port with 4 pin; Be serially connected with diode D16 and D17 between 3 pin of said bridge rectifier D 2 and 4 pin, 3 pin of said bridge rectifier D 2 insert the output of low-power consumption holding circuit 3 through diode D15 and D14;
Referring to Fig. 6; Said low-power consumption holding circuit 3 includes secondary coil, diode D4, voltage-stabiliser tube D6 and capacitor C 3, and said secondary coil one end is an output, and the other end is an earth terminal; The output of secondary coil links to each other with the positive pole of diode D4; The negative pole of said diode D4 divides three the tunnel, the one tunnel through capacitor C 3 ground connection, and one the tunnel through voltage-stabiliser tube D6 ground connection; Another road is output and links to each other with the input of height voltage conversion circuit 4, and said secondary coil accesses in the coupling coil of AC/DC change-over circuit 2.
Claims (2)
1. intelligent electricity-saving device of AC/DC contactor; It is characterized in that: said electricity-saving appliance includes microprocessor (1), AC/DC change-over circuit (2), low-power consumption holding circuit (3), height voltage conversion circuit (4), output circuit (5), switch switching circuit (6), buffer circuit one (7), voltage detecting circuit (8), buffer circuit two (9), power factor correction circuits (10) and surge and suppresses electric source filter circuit (11); Alternating current inserts surge and suppresses electric source filter circuit (11), buffer circuit two (9) and height voltage conversion circuit (4); Said surge suppresses the output access power factor calibration circuit (10) of electric source filter circuit (11); The output of said power factor correction circuits (10) inserts AC/DC change-over circuit (2); The output of said buffer circuit two (9) links to each other with voltage detecting circuit (8); Said AC/DC change-over circuit (2) is respectively to microprocessor (1), low-power consumption holding circuit (3), voltage detecting circuit (8) and switch switching circuit (6) power supply; Said voltage detecting circuit (8) links to each other with the input of microprocessor (1); The control end of said microprocessor (1) links to each other with buffer circuit one (7), and the output of said buffer circuit one (7) links to each other with switch switching circuit (6) with height voltage conversion circuit (4), and the output of said low-power consumption holding circuit (3) links to each other with the input of height voltage conversion circuit (4); The output of said height voltage conversion circuit (4) inserts output circuit (5), and the output of said output circuit (5) links to each other with switch switching circuit (6);
Said voltage detecting circuit (8) includes dividing potential drop reference circuit and sample circuit; Said dividing potential drop reference circuit includes amplifier U4A, and 3 pin of said amplifier U4A link to each other with high level 5V through resistance R 9, and 3 pin of said amplifier U4A are through resistance R 10 ground connection; 2 pin of said amplifier U4A link to each other with 1 pin; 1 pin of said amplifier U4A divides four the tunnel, the one tunnel to meet high level 2.5V, a tunnel through capacitor C 5 ground connection, a tunnel through capacitor C 6 ground connection, a tunnel and link to each other with resistance R 12 1 ends, and said resistance R 12 other ends divide two-way; One the tunnel through capacitor C 7 ground connection, and another road directly connects microprocessor (1); Said sample circuit includes amplifier U4B and coupler L2, and alternating current one tunnel is through 4 pin of resistance R 24, R25 and R26 access coupler L2, and 3 pin of coupler L2 are inserted on another road through resistance R 27, R28 and R29; Be connected to a resistance R 30 between 1 pin of coupler L2 and 2 pin, 1 pin of said coupler L2 links to each other with 6 pin of amplifier U4B through resistance R 31, and 2 pin one tunnel of said coupler L2 link to each other with high level 2.5V; Another road links to each other with 5 pin of amplifier U4B through resistance R 32; 6 pin one tunnel of said amplifier U4B are through capacitor C 14 ground connection, and another road links to each other with 7 pin of amplifier U4B through resistance R 34, and 7 pin of said amplifier U4B link to each other with resistance R 33 1 ends; Said resistance R 33 other ends divide three the tunnel; One the tunnel through capacitor C 8 ground connection, and one the tunnel links to each other with high level 5V through diode D10, and microprocessor (1) is inserted on another road;
Said height voltage conversion circuit (4) includes control circuit and commutation circuit; Said control circuit includes controllable silicon Q1 and controllable silicon Q2; Two-phase alternating current links to each other with 1 pin of controllable silicon Q1 and controllable silicon Q2 respectively; 1 pin of said controllable silicon Q1 links to each other with 3 pin of controllable silicon Q1 through resistance R 1, and 3 pin of said controllable silicon Q1 link to each other with 4 pin of photoelectrical coupler U1 through resistance R 3, and 2 pin of said controllable silicon Q1 link to each other with 6 pin of photoelectrical coupler U1; 1 pin of said controllable silicon Q2 links to each other with 3 pin of controllable silicon Q2 through resistance R 2; 3 pin of said controllable silicon Q2 link to each other with 4 pin of photoelectrical coupler U2 through resistance R 4, and 2 pin of said controllable silicon Q2 link to each other with 6 pin of photoelectrical coupler U2, and 1 pin of said photoelectrical coupler U1 meets high level 5V through resistance R 5; Link to each other with 1 pin of photoelectrical coupler U2 after 2 pin of said photoelectrical coupler U1 link to each other with 3 pin, link to each other with the switching signal output port of microprocessor (1) after 2 pin of said photoelectrical coupler U2 link to each other with 3 pin; 1 pin of the bridge rectifier D 2 of said commutation circuit and 2 pin link to each other with 2 pin of controllable silicon Q1 and controllable silicon Q2 in the control circuit respectively; 3 pin of said bridge rectifier D 2 link to each other with contactor as output port with 4 pin; Be serially connected with diode D16 and D17 between 3 pin of said bridge rectifier D 2 and 4 pin, 3 pin of said bridge rectifier D 2 insert the output of low-power consumption holding circuit (3) through diode D15 and D14;
Said low-power consumption holding circuit (3) includes secondary coil, diode D4, voltage-stabiliser tube D6 and capacitor C 3; Said secondary coil one end is an output; The other end is an earth terminal, and the output of secondary coil links to each other with the positive pole of diode D4, and the negative pole of said diode D4 divides three the tunnel; One the tunnel through capacitor C 3 ground connection; One the tunnel through voltage-stabiliser tube D6 ground connection, and another road is output and links to each other with the input of height voltage conversion circuit (4), and said secondary coil accesses in the coupling coil of AC/DC change-over circuit (2).
2. a kind of according to claim 1 intelligent electricity-saving device of AC/DC contactor is characterized in that: the output of said microprocessor (1) links to each other with display circuit (13) with key circuit (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101830406A CN101867303B (en) | 2010-05-24 | 2010-05-24 | Intelligent electricity-saving device of AC/DC contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101830406A CN101867303B (en) | 2010-05-24 | 2010-05-24 | Intelligent electricity-saving device of AC/DC contactor |
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| Publication Number | Publication Date |
|---|---|
| CN101867303A CN101867303A (en) | 2010-10-20 |
| CN101867303B true CN101867303B (en) | 2012-11-14 |
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| CN2010101830406A Expired - Fee Related CN101867303B (en) | 2010-05-24 | 2010-05-24 | Intelligent electricity-saving device of AC/DC contactor |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262980B (en) * | 2011-01-11 | 2013-05-15 | 沈阳二一三控制电器制造有限公司 | Multi-pole direct current contactor |
| CN106997828B (en) * | 2017-04-24 | 2019-11-15 | 深圳飞沃拜特技术有限公司 | AC contactor controller and its control method |
| CN108333552B (en) * | 2018-04-08 | 2024-04-19 | 江阴市星火电子科技有限公司 | Mutual inductor homonymous end detection device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2378824Y (en) * | 1998-01-24 | 2000-05-17 | 孙国峰 | DC controller for AC contactor |
| CN201332060Y (en) * | 2009-01-08 | 2009-10-21 | 虞培良 | Energy-conserving environment-protecting type alternating current-direct current contactor controller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006318661A (en) * | 2005-05-10 | 2006-11-24 | Toshiba Mitsubishi-Electric Industrial System Corp | Electromagnetic contactor drive circuit |
-
2010
- 2010-05-24 CN CN2010101830406A patent/CN101867303B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2378824Y (en) * | 1998-01-24 | 2000-05-17 | 孙国峰 | DC controller for AC contactor |
| CN201332060Y (en) * | 2009-01-08 | 2009-10-21 | 虞培良 | Energy-conserving environment-protecting type alternating current-direct current contactor controller |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2006-318661A 2006.11.24 |
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