CN206806253U - A kind of multicircuit relay operating passing zero control circuit of single-phase load three phase supply - Google Patents
A kind of multicircuit relay operating passing zero control circuit of single-phase load three phase supply Download PDFInfo
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- CN206806253U CN206806253U CN201720106135.5U CN201720106135U CN206806253U CN 206806253 U CN206806253 U CN 206806253U CN 201720106135 U CN201720106135 U CN 201720106135U CN 206806253 U CN206806253 U CN 206806253U
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Abstract
A kind of multicircuit relay operating passing zero control circuit of single-phase load three phase supply, including single-phase zero cross detection circuit, MCU, the relay driving module of multichannel single-phase load, phase input block and phase delay unit, the actually detected phase of each road single-phase load actual power phase and zero cross detection circuit is sent to phase delay unit by phase input block, phase delay unit determines delay time according to the phase difference for crossing zero phase and load phase, realizes the multicircuit relay operating passing zero of three phase supply single-phase load.Operating passing zero control circuit has effectively been simplified, the volume of relay module has been reduced, reduces maintenance cost.
Description
Technical field
It the utility model is related to a kind of multicircuit relay operating passing zero control circuit, especially single-phase load three phase supply
Multicircuit relay operating passing zero control circuit.
Background technology
The multicircuit relay operating passing zero control circuit of currently known three phase supply, be per relay configuration all the way all the way
Zero cross detection circuit, the output phase of current relay is directly detected, so as to reach the control effect of operating passing zero, but this electricity
The build that road directly results in product is excessive, manufacture, maintenance cost improve, it is inconvenient for use the problems such as.
The content of the invention
Zero cross detection circuit adverse effect is configured per relay all the way in order to overcome, the utility model provides
A kind of multicircuit relay operating passing zero control circuit of the single-phase load three phase supply based on single zero passage detection, the circuit is not only
The multicircuit relay operating passing zero of single-phase load three phase supply can be controlled, and can avoid configuring per relay all the way
Zero detection circuit adverse effect.
Solution of the present utility model is：Including zero cross detection circuit, MCU, multichannel single-phase load relay driving
Module, phase input block and phase delay unit, phase input block is by each road single-phase load actual power phase and zero passage
The actually detected phase of detection circuit is sent to phase delay unit, wherein described actual power phase and actually detected phase
For a certain phase in A/B/C three-phases;Phase delay unit determines delay time according to the phase difference for crossing zero phase and load phase, real
The multicircuit relay operating passing zero of existing single-phase load three phase supply.Effectively simplified operating passing zero control circuit, reduce after
The volume of electrical appliance module, reduces maintenance cost.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is application circuit structured flowchart of the present utility model.
In Fig. 1, the detection phase of zero cross detection circuit can be a certain phase in A/B/C three-phases, in figure by taking A phases as an example.It is more
Road relay module K1 input connects a certain phase in A/B/C three-phases respectively.N is zero line in figure.
Embodiment
In this specific embodiment, phase delay is realized by control module internal processes algorithm, crosses zero phase and load
Phase inputs MCU by host computer by serial ports.
Zero cross detection circuit connects A phase power supplys, and during A phase power supply zero passages, MCU receives zero cross detection circuit zero cross signal.
Control module internal processes algorithm computation delay time, calculation formula：Delay time T=（10+t1-t2）Ms, t1 are
The phase difference of zero phase and load phase is crossed, if t1=0ms, zero phase excessively is identical with load phase, if t1=6.67ms, bears
Phase is carried than 120 ° of zero passage delayed phase, if t1=13.34ms, than 240 ° of zero passage delayed phase, t2 is moved load phase for MCU
Make the time, input phase is A phases, if output phase is A phases（K1）, then MCU send action after T=(10-t2) ms and refer to
Order, similarly, if output phase is B-phase（K2）, then the T that is delayed=（16.67-t2）Ms, if it is C phases that can similarly obtain output phase
（K3）, then the T that is delayed=（23.34-t2）ms.
Control instruction is sent after MCU delays, realizes multicircuit relay module K1 operating passing zero control.
Claims (3)
1. a kind of multicircuit relay operating passing zero control circuit of single-phase load three phase supply, including single-phase zero cross detection circuit,
MCU, multichannel single-phase load relay driving module, it is characterized in that：The circuit is additionally provided with phase input block and phase delay
The actually detected phase of each road single-phase load actual power phase and zero cross detection circuit is sent to by unit, phase input block
Phase delay unit, wherein described actual power phase is a certain phase in A/B/C three-phases with actually detected phase；Phase delay
Unit determines delay time according to the phase difference for crossing zero phase and load phase, realizes that the zero passage of the single-phase load of three phase supply is thrown
Cut.
2. electricity is controlled according to a kind of multicircuit relay operating passing zero of single-phase load three phase supply described in claim 1
Road, it is characterized in that：Phase input block can be made up of MCU tri-state I/O mouths with jumper switch, the H/LZ tri- of tri-state I/O mouths
State distinguishes corresponding A BC three-phases, completes the setting of zero phase and load phase.
3. electricity is controlled according to a kind of multicircuit relay operating passing zero of single-phase load three phase supply described in claim 1
Road, it is characterized in that：Phase input block can also be made up of MCU serial port circuits and host computer and its bitcom, by host computer
Each road single-phase load actual power phase and the actually detected phase of zero cross detection circuit are sent to phase by MCU serial port circuits
Position delay unit, wherein described actual power phase is a certain phase in A/B/C three-phases with actually detected phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720106135.5U CN206806253U (en) | 2017-01-24 | 2017-01-24 | A kind of multicircuit relay operating passing zero control circuit of single-phase load three phase supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720106135.5U CN206806253U (en) | 2017-01-24 | 2017-01-24 | A kind of multicircuit relay operating passing zero control circuit of single-phase load three phase supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206806253U true CN206806253U (en) | 2017-12-26 |
Family
ID=60729564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720106135.5U Active CN206806253U (en) | 2017-01-24 | 2017-01-24 | A kind of multicircuit relay operating passing zero control circuit of single-phase load three phase supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206806253U (en) |
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2017
- 2017-01-24 CN CN201720106135.5U patent/CN206806253U/en active Active
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