CN202634304U - Energy-saving protecting device of alternating current contactor - Google Patents
Energy-saving protecting device of alternating current contactor Download PDFInfo
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- CN202634304U CN202634304U CN 201220281549 CN201220281549U CN202634304U CN 202634304 U CN202634304 U CN 202634304U CN 201220281549 CN201220281549 CN 201220281549 CN 201220281549 U CN201220281549 U CN 201220281549U CN 202634304 U CN202634304 U CN 202634304U
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Abstract
The utility model discloses an energy-saving protecting device of an alternating current contactor. The energy-saving protecting device comprises a single-chip microcomputer for controlling starting movement and starting delay of the alternating current contactor and an energy-saving protecting circuit of the alternating current contactor. One branch of the voltage output end is connected with the single-chip microcomputer and used for providing stable low-voltage direct-current power supply for the single-chip microcomputer, and the other branch is connected with the alternating current contactor and used for providing a starting power supply and a stable working power supply for the alternating current contactor. A lowpass filtering unit, a low-frequency filtering unit, a switch power supply unit, a direct current output unit, a direct current power supply unit, a protecting, driving and control unit and a starting power supply circuit are arranged in the energy-saving protecting circuit of the alternating current contactor. The energy-saving protecting device can reduce starting voltage of the alternating current contactor to 80V and reduce working voltage to 3.5-5.5V, solves the problem of burning out of the alternating current contactor fundamentally and greatly prolongs the service life of the alternating current contactor, and compared with the prior art, energy is saved by more than 99%.
Description
Technical field
The utility model relates to the appliance switch technical field, relates in particular to a kind of alternating-current contactor energy-saving protective device.
Background technology
A.C. contactor is that the appliance switch technical field is used major control device the most widely, and the A.C. contactor ubiquity voltage adaptation scope of using at present narrow with problems such as self energy consumption is big.For example; CJ20-160A relatively more commonly used, CJ20-250A, CJ20-400A A.C. contactor etc.; Its operating voltage is generally 380V, and having only could operate as normal when 365V is above when operating voltage, and reduces to 360V and when following when supply power voltage; Then can produce strong vibration, have a strong impact on the operate as normal of A.C. contactor; Simultaneously, about 400V, A.C. contactor burnout phenomenon often occurs to the distribution transformer supply power voltage in its process of using continuously usually at present, not only causes the maintain and replace cost to improve thus, and influences the operational efficiency of power distribution and power equipment.Secondly, be example with the CJ20-250A A.C. contactor, operating voltage is when 380V, and its nominal power consumption is 152W, and the use of A.C. contactor is very general, the consumption of its power resource and cost thereof will be a googol.
The utility model content
The purpose of the utility model is the defective that overcomes prior art; A kind of burnout phenomenon that can stop A.C. contactor is provided; Guarantee the reliability service of A.C. contactor; Effectively prolong the useful life of A.C. contactor, and significantly reduce the alternating-current contactor energy-saving protective device of A.C. contactor power consumption of powdered.
The technical scheme that purpose adopted that realizes the utility model is: a kind of alternating-current contactor energy-saving protective device; Comprise a single-chip microcomputer; Be used for the control that A.C. contactor starts action and starts time-delay, an alternating-current contactor energy-saving protective circuit, its voltage output end one tunnel is connected with affiliated single-chip microcomputer; For single-chip microcomputer provides stable low-voltage dc power supply; Another road is connected with A.C. contactor, wherein starts power supply and stable working power for A.C. contactor provides as required, is provided with in the said alternating-current contactor energy-saving protective circuit:
---low-pass filter unit, be used to get rid of low-and high-frequency and disturb, bring into play filtering, current limliting, the overvoltage protection effect of whole on-off control system;
---the low frequency filtering unit, connect with said low-pass filter unit through bridge rectifier, be used for the remaining alternating component of filtering direct current;
---switching power supply, its voltage input end connects with said low frequency filtering unit, is used to form complete Switching Power Supply;
---the direct current output unit, its voltage input end connects with said switching power supply, is used to provide the 12V pulse dc power;
---DC power source unit, its voltage input end connects with said direct current output unit, is used to the 5v direct voltage that provides stable;
---protection, driving and control unit, its voltage input end connects with said DC power source unit, starts and stable operating voltage for A.C. contactor provides, and starting resistor, the time of A.C. contactor are detected and controls;
---start power circuit, connect with said low-pass filter unit, the startup power supply of 80V～310V is provided for protection, driving and control unit through bridge rectifier.
Said low-pass filter unit comprises insurance F1, piezo-resistance VS1, unloads discharge resistance RT1 and capacitor C1; And constitute a RC filter circuit; In whole A.C. contactor on-off control system performance filtering, current limliting, overvoltage protection effect, filtering is carried out in interference to low-and high-frequency.
Said low frequency filtering unit comprises reverse protection diode D3, electrochemical capacitor C2, high frequency capacitance C4, resistor R 1 and rectifier D4, constitutes DC filtering, reverse protection, afterflow and unloads the discharge road, and the alternating component that direct current is remaining is carried out filtering.
Said switching power supply comprises power module U1, high frequency transformer T1, resistor R 9, electrochemical capacitor C6, high frequency capacitance C22, diode D5 and voltage stabilizing didoe D9; Constitute voltage stabilizing circuit by diode D5 and voltage stabilizing didoe D9, and with power module U1, high frequency transformer T1, unload and put the switching power circuit that resistor R9, electrochemical capacitor C6 and high frequency capacitance C22 form A.C. contactor and single-chip microcomputer.
Said direct current output unit comprises low frequency filtering capacitor C 5, C8, C9, high-frequency filter capacitor C2, C25, resistance R 16, high frequency choke inductance L 1 and high-frequency rectification diode D7, generates stable 12V pulse dc power.
Said DC power source unit comprises three terminal regulator U2, low frequency filtering capacitor C 10 and high-frequency filter capacitor C26, for single-chip microcomputer provides stable 5v direct voltage.
The power input of said protection, driving and control unit connects with the high frequency transformer of said switching power supply; This protection, driving and control unit comprise high-frequency rectification diode FR104, low frequency filtering element C7, low-and high-frequency filter element C24, resistance R 10, R28, R20, FET Q1, photoelectrical coupler OP1, OP2, diode D8, resistance R 3, R4, R5 and filter capacitor C11; A.C. contactor is carried out start-up control, overvoltage protection; Start-up time and operating voltage situation to A.C. contactor are carried out signals collecting, and the signal of gathering is sent to said single-chip microcomputer.
Said startup power circuit comprises resistor R 2 and electrochemical capacitor C3, is used to the startup power supply that A.C. contactor provides 80V～310V.
Said power module U1 adopts VIPER22A type power module.
The alternating-current contactor energy-saving protective device of the utility model; Can make the starting resistor of A.C. contactor reduce to 80V, operating voltage is reduced to 3.5～5.5V, and has fundamentally solved the problem that A.C. contactor burns; Prolonged the useful life of A.C. contactor greatly; And make the power consumption of A.C. contactor drop to 1～1.8W, compared with prior art, energy-conservation more than 99%.
Description of drawings
Fig. 1 is the structured flowchart of the utility model;
Fig. 2 is the circuit theory diagrams of alternating-current contactor energy-saving protective circuit in the utility model.
Embodiment
Referring to Fig. 1, Fig. 2; The alternating-current contactor energy-saving protective device of the utility model; Comprise a single-chip microcomputer 8 and an alternating-current contactor energy-saving protective circuit; Wherein, the alternating-current contactor energy-saving protective circuit is made up of low-pass filter unit 1, startup power circuit 10, low frequency filtering unit 3, switching power supply 4, direct current output unit 5, DC power source unit 6 and protection, driving and control unit 9.The voltage input end of said low frequency filtering unit 3 connects with low-pass filter unit 1 through bridge rectifier 2, and the voltage output end of low frequency filtering unit 3 connects with switching power supply 4, direct current output unit 5 and DC power source unit 6 lead successively.The voltage output end of said DC power source unit 6 connects with the power input of said single-chip microcomputer 8; Said startup power circuit 10 connects with low-pass filter unit 1 lead through bridge rectifier 11; Said protection, driving and control unit 10 are parallelly connected with said switching power supply 4 leads, and said single-chip microcomputer 8 connects with said protection and driver element 9 leads respectively with startup power circuit 10.
Said low-pass filter unit 1 by insurance F1, piezo-resistance VS1, unload discharge resistance RT1 and capacitor C 1 is formed, wherein insurance and piezo-resistance are connected, and circuit is carried out voltage-limiting protection; Unload and put resistor and capacitor parallel connection, the performance filter function, filtering is carried out in interference to low-and high-frequency.Filtering, current limliting, overvoltage protection effect are brought into play at A.C. contactor and whole on-off control system thereof in this unit.
Said low frequency filtering unit 3 connects with said low-pass filter unit 1 through bridge rectifier 2; This low frequency filtering unit 3 by reverse protection diode D3, electrochemical capacitor C2, high frequency capacitance C4, be used to unload the resistance R 1 that discharge presses and the rectifier D4 that is used for the afterflow modulation forms; The set of data part synergy of this unit; Constitute DC filtering, reverse protection, afterflow and unload the discharge road, main is the alternating component filtering remaining to direct current.
Said switching power supply 4 contains power module U1, high frequency transformer T1, is used to unload resistor R 9, electrochemical capacitor C6, high frequency capacitance C22, diode D5 and the voltage stabilizing didoe D9 that discharge is pressed; Wherein diode D5 and voltage stabilizing didoe D9 constitute voltage stabilizing circuit; The set of data part of this unit acts synergistically, and forms the switching power circuit of a complete A.C. contactor and single-chip microcomputer 8.Wherein, power module U1 adopt VIPER22A type power module, has that voltage adaptation wide ranges (100V-265V), power are big, stable performance, the sky of standing be than characteristics such as adjustable, that overload capacity is strong.
Said direct current output unit 5 contains low frequency filtering capacitor C 5, C8, C9, high-frequency filter capacitor C2, C25, resistance R 16, high frequency choke inductance L 1 and high-frequency rectification diode D7, and set of data part is formed the 12V pulse dc power.
Said DC power source unit 6 contains three terminal regulator U2, low frequency filtering capacitor C 10 and high-frequency filter capacitor C26, and its effect is for photoelectrical coupler OP1, OP2 in single-chip microcomputer 8 and said protection, driving and the control unit 9 stable 5v direct voltage to be provided.
The power input of said protection, driving and control unit 9 connects with high frequency transformer T1 in the said switching power supply 4; Form by high-frequency rectification diode FR104, low frequency filtering element C7, low-and high-frequency filter element C24, resistance R 10, R28, R20, FET Q1, photoelectrical coupler OP1, OP2, diode D8, resistance R 3, R4, R5 and filter element C11, be used for protection, driving and the control of A.C. contactor 7.Wherein photoelectrical coupler OP1, OP2 have realized the photoelectricity isolation of said single-chip microcomputer 8 and A.C. contactor 7 and protection, driving and control unit 9 voltages, have been used to realize the link of high and low pressure circuit.Photoelectrical coupler OP1 carries out signals collecting to the start-up time and the operating voltage situation of A.C. contactor 7, and the signal of gathering is sent to said single-chip microcomputer 8; Photoelectrical coupler OP2 is used to receive the command signal of said single-chip microcomputer 8, and according to this command information A.C. contactor 7 is started action, enforcement control start-up time, and A.C. contactor 7 is carried out overvoltage protection.Output N1 in protection, driving and the control unit 9 is connected with A.C. contactor 7 with LOAD, starts and operating voltage for A.C. contactor 7 provides.
Said startup power circuit 10 connects with said low-pass filter unit 1 through bridge rectifier 11; Its power output end connects with said protection, driving and control unit 9; This starts power circuit 10 is made up of with electrochemical capacitor C3 resistance R 2, and through protection, driving and control unit 9 the startup power supply of 80V～310V is provided for A.C. contactor 7.
The power input of said single-chip microcomputer 8 connects with the power output end of said DC power source unit 6, and obtains stable 5V DC power supply.Monitoring, control signal input, output connect with 2 photoelectrical coupler OP1, OP2 of said protection, driving and control unit 9 respectively through signal transmssion line; The start-up time and the operating voltage detection signal of the A.C. contactor 7 that photoelectrical coupler OP1 is sent are handled; And through start-up time and the operating voltage enforcement control of photoelectrical coupler OP2, thereby the normal startup and the operation of assurance A.C. contactor 7 to A.C. contactor 7.
Utility model people's result of study shows, through the suitable processing to power supply, can reduce the starting resistor and the sustaining voltage of A.C. contactor 7 greatly, and can carry out reliable protection to A.C. contactor 7, prolongs the useful life of A.C. contactor 7 significantly.The alternating-current contactor energy-saving protective device of the utility model; Voltage input end L, N through said low-pass filter unit 1 add 220V voltage; Low-pass filter circuit through F1, VS1, RI1, C composition; And have the function of lightning protection and too high voltages, and get into protective circuit, power supply is provided for said bridge rectifier D 1, D2.After bridge rectifier D 1, D2 rectification, the one tunnel gets into said startup power circuit and protection, driving and control unit 9, is used for the startup power supply of A.C. contactor 7; Another road gets into said low frequency filtering unit 3, switching power supply 4, direct current output unit 5 and DC power source unit 6 successively, for said single- chip microcomputer 8 and 2 photoelectrical coupler OP1, OP2 provide the 5v galvanic current to press.
Because the power module U1 in the switching power supply 4 adopts VIPER22A type power module; Have that voltage adaptation wide ranges (100V-265V), power are big, stable performance, the sky of standing be than characteristics such as adjustable, that overload capacity is strong; And formed A.C. contactor switch control power circuit, and make between high pressure and the low pressure and isolate with said high frequency transformer T1.Then; L, the C filter circuit of the low frequency filtering capacitor C 8 in said direct current output unit 5, high-frequency filter capacitor C23, high frequency choke inductance L 1, low frequency filtering capacitor C 9, high-frequency rectification diode D7 and high frequency capacitance C23, C25 composition are put depressor U2 by three ends and power supply are provided for photoelectrical coupler OP1, OP2 in single-chip microcomputer 8 and protection, driving and the control unit 7 again.And the task of single-chip microcomputer 8 is the acceptance, processing through photoelectrical coupler OP1 monitor signal and the control of sending the adjustment command information to photoelectrical coupler OP2; A starting resistor is provided when energized, for A.C. contactor 7, and after A.C. contactor 7 starts, a stable operating voltage is provided.And starting resistor start-up time and operating voltage all can be regulated arbitrarily, therefore can adapt to the A.C. contactor of all size model and the A.C. contactor of various operating voltages.In protection, driving and control unit 9, realize the photoelectricity isolation through photoelectrical coupler OP1, OP2 between the power supply high-low pressure, and time detecting and FEEDBACK CONTROL carried out in output that the output voltage after single-chip microcomputer 8 is handled also can be realized open circuit protection.Result of the test proves; The effect of the alternating-current contactor energy-saving protective device through the utility model makes the starting resistor of A.C. contactor 7 reduce to 80V, and operating voltage is reduced to 3.5～5.5V; Fundamentally solved the problem that A.C. contactor burns thus; Prolonged its useful life greatly, and make the power consumption of A.C. contactor drop to 1～1.8W, compared with prior art energy-conservation more than 99%.
Claims (9)
1. alternating-current contactor energy-saving protective device, it is characterized in that: it comprises a single-chip microcomputer, is used for the control that A.C. contactor starts action and starts time-delay; An alternating-current contactor energy-saving protective circuit; Its voltage output end one tunnel is connected with affiliated single-chip microcomputer, and for single-chip microcomputer provides stable low-voltage dc power supply, another road is connected with A.C. contactor; Wherein start power supply and stable working power for A.C. contactor provides as required, be provided with in the said alternating-current contactor energy-saving protective circuit:
Low-pass filter unit is used to get rid of low-and high-frequency and disturbs, and brings into play filtering, current limliting, the overvoltage protection effect of whole on-off control system;
The low frequency filtering unit connects with said low-pass filter unit through bridge rectifier, is used for the remaining alternating component of filtering direct current;
Switching power supply, its voltage input end connects with said low frequency filtering unit, is used to form complete Switching Power Supply;
The direct current output unit, its voltage input end connects with said switching power supply, is used to provide pulse dc power;
DC power source unit, its voltage input end connects with said direct current output unit, is used to provide galvanic current to press;
Protection, driving and control unit, its voltage input end connects with said DC power source unit, starts and stable operating voltage for A.C. contactor provides, and starting resistor, the time of A.C. contactor are detected and controls;
Start power circuit, connect with said low-pass filter unit, the startup power supply of 80V～310V is provided for protection, driving and control unit through bridge rectifier.
2. alternating-current contactor energy-saving protective device as claimed in claim 1; It is characterized in that: said low-pass filter unit comprises insurance F1, piezo-resistance VS1, unloads discharge resistance RT1 and capacitor C1; And constitute a RC filter circuit; In whole A.C. contactor on-off control system performance filtering, current limliting, overvoltage protection effect, filtering is carried out in interference to low-and high-frequency.
3. alternating-current contactor energy-saving protective device as claimed in claim 1; It is characterized in that: said low frequency filtering unit comprises reverse protection diode D3, electrochemical capacitor C2, high frequency capacitance C4, resistor R 1 and rectifier D4; Constitute DC filtering, reverse protection, afterflow and unload the discharge road, the alternating component that direct current is remaining is carried out filtering.
4. alternating-current contactor energy-saving protective device as claimed in claim 1; It is characterized in that: said switching power supply comprises power module U1, high frequency transformer T1, resistor R 9, electrochemical capacitor C6, high frequency capacitance C22, diode D5 and voltage stabilizing didoe D9; Constitute voltage stabilizing circuit by diode D5 and voltage stabilizing didoe D9, and with power module U1, high frequency transformer T1, unload and put the switching power circuit that resistor R9, electrochemical capacitor C6 and high frequency capacitance C22 form A.C. contactor and single-chip microcomputer.
5. alternating-current contactor energy-saving protective device as claimed in claim 1; It is characterized in that: said direct current output unit comprises low frequency filtering capacitor C 5, C8, C9, high-frequency filter capacitor C2, C25, resistance R 16, high frequency choke inductance L 1 and high-frequency rectification diode D7, generates stable 12V pulse dc power.
6. alternating-current contactor energy-saving protective device as claimed in claim 1 is characterized in that: said DC power source unit comprises three terminal regulator U2, low frequency filtering capacitor C 10 and high-frequency filter capacitor C26, for single-chip microcomputer provides stable 5v direct voltage.
7. alternating-current contactor energy-saving protective device as claimed in claim 1; It is characterized in that: the power input of said protection, driving and control unit connects with the high frequency transformer of said switching power supply; This protection, driving and control unit comprise high-frequency rectification diode FR104, low frequency filtering element C7, low-and high-frequency filter element C24, resistance R 10, R28, R20, FET Q1, photoelectrical coupler OP1, OP2, diode D8, resistance R 3, R4, R5 and filter capacitor C11; A.C. contactor is carried out start-up control, overvoltage protection; Start-up time and operating voltage situation to A.C. contactor are carried out signals collecting, and the signal of gathering is sent to said single-chip microcomputer.
8. alternating-current contactor energy-saving protective device as claimed in claim 1 is characterized in that: said startup power circuit comprises resistor R 2 and electrochemical capacitor C3, is used to the startup power supply that A.C. contactor provides 80V～310V.
9. alternating-current contactor energy-saving protective device as claimed in claim 4 is characterized in that: said power module U1 adopts VIPER22A type power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220281549 CN202634304U (en) | 2012-06-15 | 2012-06-15 | Energy-saving protecting device of alternating current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220281549 CN202634304U (en) | 2012-06-15 | 2012-06-15 | Energy-saving protecting device of alternating current contactor |
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| Publication Number | Publication Date |
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| CN202634304U true CN202634304U (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220281549 Expired - Fee Related CN202634304U (en) | 2012-06-15 | 2012-06-15 | Energy-saving protecting device of alternating current contactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882387A (en) * | 2012-06-15 | 2013-01-16 | 河南省电力公司南阳供电公司 | Energy-saving protection device for alternating current contactor |
-
2012
- 2012-06-15 CN CN 201220281549 patent/CN202634304U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882387A (en) * | 2012-06-15 | 2013-01-16 | 河南省电力公司南阳供电公司 | Energy-saving protection device for alternating current contactor |
| CN102882387B (en) * | 2012-06-15 | 2016-04-20 | 国网河南省电力公司南阳供电公司 | Alternating-current contactor energy-saving protective device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20140615 |
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| EXPY | Termination of patent right or utility model |