CN103368250B - A kind of big current switching control - Google Patents
A kind of big current switching control Download PDFInfo
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- CN103368250B CN103368250B CN201210084862.8A CN201210084862A CN103368250B CN 103368250 B CN103368250 B CN 103368250B CN 201210084862 A CN201210084862 A CN 201210084862A CN 103368250 B CN103368250 B CN 103368250B
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- relay
- contactor
- rly1
- switching controls
- auxiliary interlock
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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
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The invention discloses a kind of novel big current switching control, belong to the control device of high-power electric current.By A.C. contactor KM1, KM2, switching controls relay R LY1, auxiliary interlock relay RLY2, RLY3, SCR, current-limiting resistance R1, R2 form novel big current switching control, it is characterized in that: powering on early stage, A.C. contactor, relay are relieving state; Wherein by after powering on, by bypass turn inversion export time, turn three kinds of dress states when bypass exports by inversion.The present invention introduces and switches compensation mechanism on high-power switching device shifter basis, guarantees the power supply safety of power consumption equipment, extends the electrical endurance of contact point.Native system simple structure, and zero loss can be realized, energy-conserving and environment-protective can improve running efficiency of system and reduce system bulk, and reliability is advantages of higher very.
Description
Technical field
The present invention relates to the control device of high-power electric current, specifically a kind of big current switching control.
Background technology
Existing high-power switching device shifter is all come by two-way static switch, this static switch is generally made up of controllable silicon, its conduction voltage drop is generally about 2V, as the electric current through 100A in big current power system, then loss=100A × 2V=200W, just must install heat abstractor additional on SCR and heat dissipation wind channel is set in order to avoid it burns out, causing equipment cost to uprise like this, structure complicates etc.Therefore, overcome existing product exist defect, become when business urgently.
Summary of the invention
In order to overcome the deficiency of existing product, the object of the invention is to provide a kind of structure simple, easy for installation, safe and reliable big current switching control.
The utility model solves the technical scheme that its technical problem adopts: a kind of by A.C. contactor, switching controls relay, auxiliary interlock relay, the big current switching control of current-limiting resistance composition, powering on early stage, A.C. contactor, switching controls relay, auxiliary interlock relay are relieving state;
After powering on, bypass live wire is through switching controls relay one (RLY1), fuse (F3), A.C. contactor one (KM1) coil, auxiliary interlock relay three (RLY3), switching controls relay one (RLY1), zero line, wherein A.C. contactor one (KM1) and auxiliary interlock relay two (RLY2) adhesive, the coil power loop of A.C. contactor two (KM2) is off;
When turning inversion output by bypass, switch-over control signal (CN1) flows through switching controls relay one (RLY1), control switching controls relay one (RLY1) adhesive, A.C. contactor one (KM1) and auxiliary interlock relay two (RLY2) are for decontroling, inversion live wire is through switching controls relay one (RLY1), fuse (F3), A.C. contactor two (KM2) coil, auxiliary interlock relay two (RLY2), switching controls relay one (RLY1), zero line, wherein A.C. contactor two (KM2) and auxiliary interlock relay three (RLY3) adhesive, the coil power loop of A.C. contactor one (KM1) is off,
When turning bypass output by inversion, switch-over control signal (CN1) flows through switching controls relay one (RLY1), control switching controls relay one (RLY1) to decontrol, A.C. contactor two (KM2) and auxiliary interlock relay three (RLY3) are for decontroling, bypass live wire is through switching controls relay one (RLY1), fuse (F3), A.C. contactor one (KM1) coil, auxiliary interlock relay three (RLY3), switching controls relay one (RLY1), zero line, wherein A.C. contactor one (KM1) and auxiliary interlock relay two (RLY2) adhesive, the coil power loop of A.C. contactor two (KM2) is off.
Compensate conducting in handoff procedure moment by controllable silicon (SCR1), make output free of discontinuities.
Described A.C. contactor one (KM1), A.C. contactor two (KM2) all attach the auxiliary contact often opened, the electric power loop of its control coil is separately respectively through the normally-closed contact of two auxiliary interlock relays two (RLY2), auxiliary interlock relay three (RLY3), and the electric power loop of auxiliary interlock relay two (RLY2), the respective control coil of auxiliary interlock relay three (RLY3) is respectively through the normally opened contact of two contactors, form a kind of dual electromechanical interlock control device.
Described switch-over control signal (CN1) applies a power supply (can be the common voltage specifications such as 6V, 12V, 24V, 48V) voltage signal (CN1 is an interface, namely conventional on circuit board plug class connector).
The invention has the beneficial effects as follows: switch compensation mechanism because the present invention introduces on existing high-power switching device shifter basis, guarantee the power supply safety of power consumption equipment, extend the electrical endurance that contactor gets an electric shock.Therefore the present invention has one is adopt suitching type to compensate, and can realize zero-time switching, guarantee that Electrical Safety is reliable; Two is increase to adopt auxiliary interlock relay to control, realize dual mechanical+electronic interlocking, not only improve common single-stage machinery and to be interlocked in handoff procedure the potential safety hazards such as issuable contactor shake, contact arc discharge, ensure power supply safety but also useful life of contacts of contactor can be extended.Three is that system construction is simple, and can realize zero loss, and energy-conserving and environment-protective can improve running efficiency of system and reduce system bulk, and reliability is very high.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a part of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the topology view that the present invention is applied in high power UPS (uninterrupted power supply) or EPS (emergency power supply) system.
Embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearly, understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
With reference to Fig. 1, the present embodiment is that the switching device shifter being applied in high power UPS (uninterrupted power supply) is made up of A.C. contactor (KM1, KM2), power resistor (R1, R2), controllable silicon (SCR) and relay (RLY1, RLY2, RLY3); Relay R LY1 controls to select KM1 adhesive or KM2 adhesive, namely realizes the switching of bypass and inversion output; Two contactors all attach the auxiliary contact often opened, the electric power loop of its control coil is separately respectively through the normally-closed contact of two auxiliary interlock relays two (RLY2), auxiliary interlock relay three (RLY3), and the electric power loop of auxiliary interlock relay two (RLY2), the respective control coil of auxiliary interlock relay three (RLY3) is respectively through the normally opened contact of two contactors, form a kind of dual electromechanical interlock control device, to guarantee that two-way power supply is switching fail safe and the reliability of moment.
Powering on early stage, A.C. contactor, switching controls relay, auxiliary interlock relay are relieving state;
After powering on, bypass live wire is through switching controls relay one RLY1, fuse F3, A.C. contactor one KM1 coil, auxiliary interlock relay three RLY3, switching controls relay one RLY1, zero line, make A.C. contactor one KM1 adhesive, auxiliary interlock relay two RLY2 also adhesive subsequently, the coil power loop so cutting off A.C. contactor two KM2 is off state, makes it cannot adhesive;
When turning inversion output by bypass, switch-over control signal CN1 makes control switching controls relay one RLY1 adhesive, A.C. contactor one KM1 transfers relieving state to because of dead electricity, auxiliary interlock relay two RLY2 also decontrols, inversion live wire is through switching controls relay one RLY1, fuse F3, A.C. contactor two KM2 coil, auxiliary interlock relay two RLY2, switching controls relay one RLY1, zero line, make A.C. contactor two KM2 adhesive, auxiliary interlock relay three RLY3 also adhesive subsequently, the coil power loop so just cutting off A.C. contactor one KM1 is off state, make it cannot adhesive.
Same inversion turn bypass export time, switch-over control signal CN1 does not apply power supply voltage signal, switching controls relay one RLY1 is decontroled, A.C. contactor two KM2 transfers relieving state to because of dead electricity, auxiliary interlock relay three RLY3 also decontrols, bypass live wire is through switching controls relay one RLY1, fuse F3, A.C. contactor one KM1 coil, auxiliary interlock relay three RLY3, switching controls relay one RLY1, zero line, make A.C. contactor one KM1 adhesive, auxiliary interlock relay two RLY2 also adhesive subsequently, the coil power loop so just cutting off A.C. contactor two KM2 is off state, make it cannot adhesive.
Compensate conducting in handoff procedure moment by controllable silicon SCR, cause output free of discontinuities, thus guarantee the power supply safety of visual plant; Avoid two contactors in handoff procedure, to occur contact sparking, glue extremely, namely guarantee reliably completing of switching action, greatly can extend again the useful life of contacts of contactor simultaneously.
Above-mentioned explanation illustrate and describes the preferred embodiments of the present invention, as previously mentioned, be to be understood that the present invention is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in invention contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from the spirit and scope of the present invention, then all should in the protection range of claims of the present invention.
Claims (2)
1. a big current switching control, is characterized in that: powering on early stage, and A.C. contactor, switching controls relay, auxiliary interlock relay are relieving state;
After powering on, bypass live wire is through switching controls relay one (RLY1), fuse (F3), A.C. contactor one (KM1) coil, auxiliary interlock relay three (RLY3), switching controls relay one (RLY1), zero line, wherein A.C. contactor one (KM1) and auxiliary interlock relay two (RLY2) adhesive, the coil power loop of A.C. contactor two (KM2) is off;
When turning inversion output by bypass, switch-over control signal (CN1) flows through switching controls relay one (RLY1), control switching controls relay one (RLY1) adhesive, A.C. contactor one (KM1) and auxiliary interlock relay two (RLY2) are decontroled, inversion live wire is through switching controls relay one (RLY1), fuse (F3), A.C. contactor two (KM2) coil, auxiliary interlock relay two (RLY2), switching controls relay one (RLY1), zero line, wherein A.C. contactor two (KM2) and auxiliary interlock relay three (RLY3) adhesive, the coil power loop of A.C. contactor one (KM1) is off,
When turning bypass output by inversion, switch-over control signal (CN1) flows through switching controls relay one (RLY1), control switching controls relay one (RLY1) to decontrol, A.C. contactor two (KM2) and auxiliary interlock relay three (RLY3) are decontroled, bypass live wire (P1) is through switching controls relay one (RLY1), fuse (F3), A.C. contactor one (KM1) coil, auxiliary interlock relay three (RLY3), switching controls relay one (RLY1), zero line, wherein A.C. contactor one (KM1) and auxiliary interlock relay two (RLY2) adhesive, the coil power loop of A.C. contactor two (KM2) is off.
2. a kind of big current switching control as claimed in claim 1, it is characterized in that: described A.C. contactor one (KM1), A.C. contactor two (KM2) all attaches the auxiliary contact often opened, the electric power loop of its control coil is separately respectively through two auxiliary interlock relays two (RLY2), the normally-closed contact of auxiliary interlock relay three (RLY3), and auxiliary interlock relay two (RLY2), the electric power loop of the respective control coil of auxiliary interlock relay three (RLY3) is again respectively through the normally opened contact of two contactors, form a kind of dual electromechanical interlock control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210084862.8A CN103368250B (en) | 2012-03-27 | 2012-03-27 | A kind of big current switching control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210084862.8A CN103368250B (en) | 2012-03-27 | 2012-03-27 | A kind of big current switching control |
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| CN103368250A CN103368250A (en) | 2013-10-23 |
| CN103368250B true CN103368250B (en) | 2016-04-13 |
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| CN201210084862.8A Active CN103368250B (en) | 2012-03-27 | 2012-03-27 | A kind of big current switching control |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108964246B (en) * | 2018-07-25 | 2021-11-23 | 郑州云海信息技术有限公司 | Main/standby power supply switching method and system of test equipment |
| CN113328426B (en) * | 2021-06-30 | 2023-06-02 | 江西洪都航空工业集团有限责任公司 | Nacelle, radar power supply control circuit of coach machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368632A (en) * | 2011-11-13 | 2012-03-07 | 广州高澜节能技术股份有限公司 | Dual-power switching system |
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| FR2957204B1 (en) * | 2010-03-02 | 2014-11-21 | Bull Sas | SYSTEM AND METHOD FOR DIRECT CURRENT POWER SUPPLY OF AN ELECTRICAL SYSTEM |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368632A (en) * | 2011-11-13 | 2012-03-07 | 广州高澜节能技术股份有限公司 | Dual-power switching system |
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| CN103368250A (en) | 2013-10-23 |
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Address after: 361022 No. 26, Xinle Road, Haicang District, Fujian, Xiamen Applicant after: AVIC Tech (Xiamen) Electronics Co., Ltd. Address before: 361022 No. 26, Xinle Road, Haicang District, Fujian, Xiamen Applicant before: Xiamen Protek Technology Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: XIAMEN PROTEK BIO-TECHNOLOGY CO., LTD. TO: ZHONGHANG TAIKE (XIAMEN) ELECTRONIC CO., LTD. |
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Address after: 361022 No. 26, Xinle Road, Haicang District, Fujian, Xiamen Patentee after: AVIC Tech (Xiamen) electric power technology Limited by Share Ltd Address before: 361022 No. 26, Xinle Road, Haicang District, Fujian, Xiamen Patentee before: AVIC Tech (Xiamen) Electronics Co., Ltd. |