CN110349805A - A kind of combination switch of intelligent zero-cross-switching - Google Patents
A kind of combination switch of intelligent zero-cross-switching Download PDFInfo
- Publication number
- CN110349805A CN110349805A CN201810301273.8A CN201810301273A CN110349805A CN 110349805 A CN110349805 A CN 110349805A CN 201810301273 A CN201810301273 A CN 201810301273A CN 110349805 A CN110349805 A CN 110349805A
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- China
- Prior art keywords
- cpu
- zero
- latching relay
- magnetic latching
- circuit
- Prior art date
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- Pending
Links
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 230000003111 delayed effect Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
- H01H47/18—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for introducing delay in the operation of the relay
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Relay Circuits (AREA)
Abstract
The invention discloses a kind of combination switches of intelligent zero-cross-switching, it include: input interface circuit, CPU, feed circuit, executing agency, driving circuit, input interface circuit connects external control signal by optocoupler and passes to CPU, CPU drives executing agency by driving circuit, the driving signal DR+ of driving circuit, DR- is connected to the input triode Q5 of H bridge driving, Q6, triode Q1, Q2, Q3, Q4 connects into bridge arm, diode D1, D2, D3, D4 forms bridge arm continuous current circuit to drive executing agency, the input terminal of feed circuit is connected with executing agency, the output end of feed circuit is connected with the I/O port of CPU, when the I/O port output of CPU is high level, it can be used as switch zero passage detection, and the I/O port output of CPU is often high, it can be used as contact Closure signal feedback.The present invention uses CPU intelligent control, receives external control signal, while calculating, measuring the inherent delay of the magnetic latching relay provided by feed circuit, so as to realize control operating passing zero.
Description
Technical field
The present invention relates to a kind of combination switches of intelligent zero-cross-switching.
Background technique
With the fast development of national economy, national large and small enterprise increases, the continuous improvement of quality of residents'life and family
Electrical appliance is popularized, and the requirement to power quality is increasingly increased, and the economical operation of power grid is increasingly by everybody attention.Energy conservation
What consumption reduction, stability and the economy for improving power quality and electric system were that electric system efficient operation is faced important asks
Topic.Carrying out reasonable compensation to reactive power is to improve power quality, inhibits system oscillation, improves a ratio of system stability
Simpler, quick, effective method.Existing reactive power compensator is mainly to switch based on recombiner condenser, due to capacitor
Intrinsic electrical characteristics, combination switch has required zero passage complex function here.Current zero passage combination switch is main or by crystalline substance
Brake tube is constituted, and this zero passage combination switch being made of power electronics, poor anti jamming capability is easily damaged.
Summary of the invention
The present invention one of to solve the above-mentioned problems, provides a kind of intelligent control magnetic latching relay and realizes that zero passage is compound
Combination switch.
In order to achieve the above object, the technical solution adopted by the present invention is that:
A kind of combination switch of intelligent zero-cross-switching includes: input interface circuit, CPU, feed circuit, executing agency, driving electricity
Road, the input interface circuit connect external control signal by optocoupler and pass to CPU, and CPU is held by driving circuit driving
Row mechanism, driving signal DR+, DR- of the driving circuit are connected to input triode Q5, Q6 of H bridge driving, triode Q1,
Q2, Q3, Q4 connect into bridge arm, and diode D1, D2, D3, D4 form bridge arm continuous current circuit to drive executing agency, the feedback electricity
The input terminal on road is connected with executing agency, and the output end of feed circuit is connected with the I/O port of CPU, when the I/O port output of CPU is
High level can be used as switch zero passage detection, and the output of the I/O port of CPU is often height, can be used as contact close signal feedback.
Further, the executing agency is made of magnetic latching relay, and magnetic latching relay passes through pulsed drive.
Further, the input of feed circuit terminates at the switch ends IN and OUT of magnetic latching relay, exports REALY_
Zero is connected with the I/O port of CPU, when magnetic latching relay contact is not closed, between only IN and OUT voltage 0.7V it
Between optocoupler could be connected, and make to export REALY_Zero high level, then can be used as switch zero passage detection, and when magnetic holding after
After appliance contact closure, REALY_Zero is normal height, then can also be used as contact close signal feedback.
Further, CPU is kept from driving signal is provided again to magnetic latching relay time of closing contact is detected as magnetic
Time mechanical delay of relay, such CPU is before magnetic latching relay zero crossing, the machine for the magnetic latching relay that is delayed
Tool delay time is put into, then just in voltage over zero, magnetic latching relay contact closure, to accomplish voltage zero-cross
Investment；When magnetic latching relay contact is opened from being closed into, REALY_Zero signal is lower by height, then measures magnetic by CPU
The mechanically cutting delay time of guard relay, so as in the super previous magnetic latching relay excision delay of voltage peak
Between provide excision signal, reach magnetic latching relay current over-zero excision.
Further, when external control signal is high level and Ctrl_In be it is high, optocoupler export Ctrl be it is low, at this time
CPU control signal output is closed executing agency；When external control signal is low level and Ctrl_In is low, optocoupler output
Ctrl is height, and CPU, which controls signal output, at this time disconnects executing agency.
Further, the magnetic latching relay when V+/V- bear direct impulse when, contact closure；When V+/V- is born instead
To when pulse, contact is disconnected, to realize the purpose of switching capacitance.
The beneficial effects of the present invention are:
The present invention uses CPU intelligent control, receives external control signal, while calculating, measuring and protected by the magnetic that feed circuit provides
The inherent delay of relay is held, so as to realize control operating passing zero.
Detailed description of the invention
Fig. 1 is system principle diagram of the invention；
Fig. 2 is input interface circuit figure of the invention；
Fig. 3 is actuating mechanism circuit figure of the invention；
Fig. 4 is feed circuit figure of the invention；
Fig. 5 is driving circuit figure of the invention.
Specific embodiment
Is illustrated to the present invention with reference to the accompanying drawings and detailed description
As shown in Figure 1, a kind of combination switch of intelligent zero-cross-switching, comprising: input interface circuit, CPU, feed circuit, execution
Mechanism, driving circuit, the input interface circuit connect external control signal by optocoupler and pass to CPU, and CPU passes through driving
Circuit drives executing agency, driving signal DR+, DR- of the driving circuit are connected to input triode Q5, Q6 of H bridge driving,
Triode Q1, Q2, Q3, Q4 connect into bridge arm, and diode D1, D2, D3, D4 form bridge arm continuous current circuit to drive executing agency,
The input terminal of the feed circuit is connected with executing agency, and the output end of feed circuit is connected with the I/O port of CPU, when CPU's
It is high level that I/O port, which exports, can be used as switch zero passage detection, and the output of the I/O port of CPU is often height, can be used as contact close signal
Feedback.
As shown in Fig. 2, input interface circuit connects external control signal by optocoupler and passes to CPU；When control signal
When for high level and Ctrl_In be it is high, optocoupler export Ctrl be it is low, CPU, which controls signal output, at this time is closed executing agency；
When control signal be low level when and Ctrl_In be it is low, optocoupler export Ctrl be height, at this time CPU control signal export make to execute
Mechanism disconnects.
As shown in figure 3, executing agency is made of magnetic latching relay, which only needs pulsed drive.When V+/
When V- bears direct impulse, contact closure；When V+/V- bears reverse impulse, contact is disconnected.To reach the mesh of switching capacitance
's.
As shown in figure 4, the input of feed circuit meets the switch ends IN and OUT in magnetic latching relay, REALY_ is exported
Zero is connected with the I/O port of CPU.When magnetic latching relay contact is not closed as seen from the figure, voltage exists between only IN and OUT
Optocoupler could be connected between 0.7V, and make to export REALY_Zero high level, can be used as switch zero passage detection in this way, and work as
After contact closure, REALY_Zero is often high, therefore the signal also can be used as contact close signal feedback.
Here driving signal is provided by CPU and arrived again and detect time of closing contact, the machinery as magnetic latching relay
Delay time.If CPU before magnetic latching relay zero crossing, is delayed time mechanical delay an of magnetic latching relay into
Row investment, the so just magnetic latching relay contact closure in voltage over zero, to accomplish that voltage zero-cross is put into.
Excision is likewise, when magnetic latching relay contact is lower from opening, REALY_Zero signal is closed by height, thus
The mechanically cutting delay time of magnetic latching relay can be measured, by CPU so as in the super previous magnetic of voltage peak
Guard relay excision delay time provides excision signal, reaches the excision of magnetic latching relay current over-zero.
As shown in figure 5, driving signal DR+, DR- of driving circuit is connected to input triode Q5, Q6 of H bridge driving；Three
Pole pipe Q1, Q2, Q3, Q4 connect into bridge arm, and diode D1, D2, D3, D4 form bridge arm continuous current circuit and constitute driving circuit.
1) when input signal DR+ is high level, DR- is low level, triode Q5, Q4 conducting, triode Q6, Q3 are cut
Only；Triode Q5 causes triode Q1 to be connected, and triode Q6 cut-off causes triode Q2 to end, so that magnetic be made to keep relay
Device K bears forward voltage and is connected.
2) when input signal DR+ is low level, DR- is high level, triode Q6, Q3 conducting, triode Q5, Q4 are cut
Only, triode Q6 causes triode Q2 to be connected, and triode Q5 cut-off causes triode Q1 to end, so that magnetic be made to keep relay
Device K bears backward voltage and disconnects.
The present invention uses CPU intelligent control, receives external control signal, while calculating, measuring and provided by feed circuit
The inherent delay of magnetic latching relay, to accomplish the combination switch of control operating passing zero.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Entirely can without departing from this invention in the content on specification, it is necessary to its technical model is determined according to scope of the claims
It encloses.
Claims (6)
1. a kind of combination switch of intelligent zero-cross-switching, it is characterised in that: include: input interface circuit, CPU, feed circuit, hold
Row mechanism, driving circuit, the input interface circuit connect external control signal by optocoupler and pass to CPU, and CPU passes through drive
Dynamic circuit drives executing agency, driving signal DR+, DR- of the driving circuit be connected to the driving of H bridge input triode Q5,
Q6, triode Q1, Q2, Q3, Q4 connect into bridge arm, and diode D1, D2, D3, D4 form bridge arm continuous current circuit to drive execution machine
The input terminal of structure, the feed circuit is connected with executing agency, and the output end of feed circuit is connected with the I/O port of CPU, works as CPU
I/O port output be high level, can be used as switch zero passage detection, and the output of the I/O port of CPU be it is often high, can be used as contact closure letter
Number feedback.
2. a kind of combination switch of intelligent zero-cross-switching according to claim 1, it is characterised in that: the executing agency by
Magnetic latching relay is constituted, and magnetic latching relay passes through pulsed drive.
3. the combination switch of any a kind of intelligent zero-cross-switching according to claim 1-2, it is characterised in that: feedback electricity
The input on road terminates at the switch ends IN and OUT of magnetic latching relay, and output REALY_Zero is connected with the I/O port of CPU, when
When magnetic latching relay contact is not closed, voltage optocoupler between 0.7V could be connected between only IN and OUT, and make to export
REALY_Zero is high level, then can be used as switch zero passage detection, and after magnetic latching relay contact closure, REALY_
Zero is normal height, then can also be used as contact close signal feedback.
4. a kind of combination switch of intelligent zero-cross-switching according to claim 1, it is characterised in that: CPU from provide driving
Signal arrives again detects magnetic latching relay time of closing contact, as time mechanical delay of magnetic latching relay, such CPU
Before magnetic latching relay zero crossing, time mechanical delay of the magnetic latching relay that is delayed is put into, then is just existed
When voltage over zero, magnetic latching relay contact closure, to accomplish that voltage zero-cross is put into；When magnetic latching relay contact is from closing
Opening is closed, REALY_Zero signal is lower by height, then when being delayed by the mechanically cutting that CPU measures magnetic latching relay
Between, so as to provide excision signal in the super previous magnetic latching relay excision delay time of voltage peak, reach magnetic holding
The excision of relay current zero passage.
5. a kind of combination switch of intelligent zero-cross-switching according to claim 1, it is characterised in that: work as external control signal
When for high level and Ctrl_In be it is high, optocoupler export Ctrl be it is low, CPU, which controls signal output, at this time is closed executing agency；
When external control signal is low level and Ctrl_In be it is low, optocoupler export Ctrl be height, at this time CPU control signal output make
Executing agency disconnects.
6. a kind of combination switch of intelligent zero-cross-switching according to claim 1, it is characterised in that: the magnetic keeps relay
Device when V+/V- bear direct impulse when, contact closure；When V+/V- bears reverse impulse, contact is disconnected, to realize throwing
Cut the purpose of capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810301273.8A CN110349805A (en) | 2018-04-04 | 2018-04-04 | A kind of combination switch of intelligent zero-cross-switching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810301273.8A CN110349805A (en) | 2018-04-04 | 2018-04-04 | A kind of combination switch of intelligent zero-cross-switching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110349805A true CN110349805A (en) | 2019-10-18 |
Family
ID=68172800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810301273.8A Pending CN110349805A (en) | 2018-04-04 | 2018-04-04 | A kind of combination switch of intelligent zero-cross-switching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110349805A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112526199A (en) * | 2020-12-01 | 2021-03-19 | 广东鸿蓝智能科技有限公司 | Charging pile detection circuit capable of prolonging service life of relay and detection method thereof |
-
2018
- 2018-04-04 CN CN201810301273.8A patent/CN110349805A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112526199A (en) * | 2020-12-01 | 2021-03-19 | 广东鸿蓝智能科技有限公司 | Charging pile detection circuit capable of prolonging service life of relay and detection method thereof |
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Legal Events
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191018 |