CN104867781A - AC contactor anti-electricity-dazzling module - Google Patents
AC contactor anti-electricity-dazzling module Download PDFInfo
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- CN104867781A CN104867781A CN201510202856.1A CN201510202856A CN104867781A CN 104867781 A CN104867781 A CN 104867781A CN 201510202856 A CN201510202856 A CN 201510202856A CN 104867781 A CN104867781 A CN 104867781A
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Abstract
The invention discloses an AC contactor anti-electricity-dazzling module and relates to an anti-electricity-dazzling module. The AC contactor anti-electricity-dazzling module comprises a control circuit, a battery, an inverter and a switching circuit. The control circuit, the battery, the inverter and the switching circuit are connected in sequence; the control circuit is connected with the battery; and the control circuit is connected with the switching circuit and an AC contactor. With the application of the microelectronic control technology, the AC contactor anti-electricity-dazzling module can effectively prevent the AC contactor from being disconnected accidently due to the electricity-dazzling phenomenon, and meanwhile, can guarantee safety and reliability of an original loop control system; the anti-electricity-dazzling module can meet anti-electricity-dazzling application of the 630 A large-current AC contactor; and finally, electrical control of a factory is allowed to be stable and reliable, and production operation is allowed to be carried out continuously, safely and efficiently.
Description
Technical field
What the present invention relates to is a kind of voltage shock avoiding module, is specifically related to a kind of A.C. contactor voltage shock avoiding module.
Background technology
The factory of large-scale continuous prodution operation is as chemical plant, oil plant, steel mill etc., its electric power system, often can run into the phenomenon of the of short duration decompression of voltage in electric power loop, be commonly called as " shaking electric ", this phenomenon can cause A.C. contactors a large amount of in control loop surprisingly to discharge.Numerous production equipments of factory are surprisingly stopped, this is also that the characteristic of A.C. contactor self determines, as the voltage decompression time in control loop is greater than 50ms or voltage falling more than 40%, then A.C. contactor very easily disconnects, and after loop restores electricity, contactor cannot recover by automatic pick, needs to rely on control circuit to restart.Like this; due to the relevance of technological process and safeguard protection between factory's continuous producing apparatus; the disconnection of A.C. contactor; other A.C. contactors of factory can be caused to disconnect; the local making production stops production even completely, restarting of shop equipment, again can because of the reason of production technology and safe procedures; complicated and the length consuming time of recovery process, thus can cause huge loss of material.The electrical phenomena that shakes is puzzlement always, affects a difficult problem for factory's steady production, is not also accepted the solution of the anti-shake electricity of A.C. contactor approved at present completely by factory.
A.C. contactor is the most frequently used automatic control unit of industrial control field, for controlling large current load, as the switch of heavy-duty motor etc., usually adopting the mode of connection shown in figure below, coming startup and the stopping of control load.Generally, L, N are for exchanging 200V or 380V.The characteristic of A.C. contactor is that its coil KM is energized, then switch adhesive, connects load.KM coil blackout, then switch disconnects.Sometimes, can there is one " rolling electricity " phenomenon in L, N current supply circuit, and loop voltage decompression in short-term, the process recovered very soon again.At this moment, as long as decompression more than time remaining 50ms in loop, instant voltage recovers normally very soon, and due to KM coil blackout, contactor also can disconnect.Cause the unexpected interruption controlling operation.Load disconnects, and production is surprisingly stopped, causing damage.So in some applied environments, user wishes the stable and reliable of retentive control, do not wish that contactless contactor " shakes electric " because running into this kind, and disconnect.
Summary of the invention
For the deficiency that prior art exists, the present invention seeks to be to provide a kind of A.C. contactor voltage shock avoiding module, after A.C. contactor pull-in winding accident power-off, power supply is continued to A.C. contactor by back-up source, maintain the attracting state of contactor, thus reach the object of contactor voltage shock avoiding.
To achieve these goals, the present invention realizes by the following technical solutions: A.C. contactor voltage shock avoiding module, comprise control circuit, battery, inverter and commutation circuit, control circuit, battery, inverter are connected successively with commutation circuit, and control circuit is also connected with battery, control circuit is connected with A.C. contactor with commutation circuit.
Described battery is also connected with the KM coil of A.C. contactor, by battery to KM coil power supply.
The present invention's application Controlled by micro computer technology, effectively can prevent A.C. contactor from surprisingly disconnecting because of " shaking electric " phenomenon, ensure again the safe and reliable of former loop control system simultaneously.The voltage shock avoiding application of 630A big current A.C. contactor can be met.The electrical control of ultimate guarantee factory is reliable and stable, and production operation can be carried out continuously, safely and efficiently.
Accompanying drawing explanation
The present invention is described in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is the A.C. contactor winding diagram in background technology of the present invention;
Fig. 2 is structural representation of the present invention.
Embodiment
The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the present invention further.
With reference to Fig. 1, this embodiment is by the following technical solutions: A.C. contactor voltage shock avoiding module, comprise control circuit, battery, inverter and commutation circuit, control circuit, battery, inverter are connected successively with commutation circuit, and control circuit is also connected with battery, control circuit is connected with A.C. contactor with commutation circuit.
It should be noted that described battery is also connected with the KM coil of A.C. contactor, by battery to KM coil power supply.
Control circuit in this embodiment is the core component of module, be responsible for shaking in loop electrical phenomena detecting, control the adjustment of the action of commutation circuit, the charge and discharge control of battery and contravarianter voltage.Battery unit is for the contactor of adhesive provides back-up source energy when there is rolling electricity in module discovery loop.Inverter the direct current of battery is changed into suitable alternating current to continue the adhesive keeping A.C. contactor.Diverter switch is the execution unit of module, and when the electricity that shakes occurs, power supply is gone to K2 from K1 by the commutation circuit in Fig. 2, completes KM coil and supplies power to reliable switching between voltage shock avoiding module for power supply by ring current, thus realize the function of contactor voltage shock avoiding.After power-off, in the time delay power-on time of the setting of voltage shock avoiding module, loop restores electricity, then diverter switch goes back to K1 from K2 automatically, power after time is up in the time delay of the setting of module, whether tube loop does not restore electricity, and diverter switch goes back to K1 from K2 automatically.Can see away from the pair of connecting wires ratio of Fig. 2 and Fig. 1, the invention has the advantages that, voltage shock avoiding module B's installs additional, can not change the control of primary circuit, and this point is concerning very crucial user.A.C. contactor normally work adhesive switch time, KM coil is by L, N loop power supply.When L, N loop occurs to shake electricity, first control unit in module can find, simultaneously in order to ensure the reliable adhesive of contactor KM coil, the A.C. contactor of adhesive is not caused to disconnect, the diverter switch of module then switches to position K2 by position K1 fast, be less than 8ms switching time at this moment, the power supply of KM coil continues power supply by the battery unit in module, realizes the reliable adhesive of KM coil.
This embodiment is owing to employing modularized design, and the capacity of battery, the power of commutation circuit more according to increase in demand, can achieve the contactor anti-shake Electricity Functional of big current A.C. contactor as CJ20--630A, stable and reliable for performance.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (2)
1. A.C. contactor voltage shock avoiding module, it is characterized in that, comprise control circuit, battery, inverter and commutation circuit, control circuit, battery, inverter are connected successively with commutation circuit, and control circuit is also connected with battery, control circuit is connected with A.C. contactor with commutation circuit.
2. A.C. contactor voltage shock avoiding module according to claim 1, is characterized in that, described battery is also connected with the KM coil of A.C. contactor, by battery to KM coil power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510202856.1A CN104867781A (en) | 2015-04-19 | 2015-04-19 | AC contactor anti-electricity-dazzling module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510202856.1A CN104867781A (en) | 2015-04-19 | 2015-04-19 | AC contactor anti-electricity-dazzling module |
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| Publication Number | Publication Date |
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| CN104867781A true CN104867781A (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510202856.1A Pending CN104867781A (en) | 2015-04-19 | 2015-04-19 | AC contactor anti-electricity-dazzling module |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026345A (en) * | 2016-07-11 | 2016-10-12 | 合肥联信电源有限公司 | Anti-interference device of motor |
| CN107834565A (en) * | 2017-11-10 | 2018-03-23 | 江苏国网自控科技股份有限公司 | A kind of intelligent control power supply Anti-electricity dazzling device and its control method |
| CN108521169A (en) * | 2018-06-11 | 2018-09-11 | 泰豪科技股份有限公司 | A kind of voltage shock avoiding circuit and system |
| CN117220241A (en) * | 2023-11-09 | 2023-12-12 | 深圳市中电电力技术股份有限公司 | Self-adaptive motor control loop anti-interference device and method |
-
2015
- 2015-04-19 CN CN201510202856.1A patent/CN104867781A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026345A (en) * | 2016-07-11 | 2016-10-12 | 合肥联信电源有限公司 | Anti-interference device of motor |
| CN106026345B (en) * | 2016-07-11 | 2018-06-12 | 合肥联信电源有限公司 | A kind of voltage-sag prevention device of motor |
| CN107834565A (en) * | 2017-11-10 | 2018-03-23 | 江苏国网自控科技股份有限公司 | A kind of intelligent control power supply Anti-electricity dazzling device and its control method |
| CN107834565B (en) * | 2017-11-10 | 2023-11-24 | 江苏国网自控科技股份有限公司 | Intelligent control power supply anti-interference device and control method thereof |
| CN108521169A (en) * | 2018-06-11 | 2018-09-11 | 泰豪科技股份有限公司 | A kind of voltage shock avoiding circuit and system |
| CN108521169B (en) * | 2018-06-11 | 2023-05-23 | 泰豪科技股份有限公司 | Anti-interference circuit and system |
| CN117220241A (en) * | 2023-11-09 | 2023-12-12 | 深圳市中电电力技术股份有限公司 | Self-adaptive motor control loop anti-interference device and method |
| CN117220241B (en) * | 2023-11-09 | 2024-04-05 | 深圳市中电电力技术股份有限公司 | Self-adaptive motor control loop anti-interference device and method |
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| C06 | Publication | ||
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Application publication date: 20150826 |