CN107592004A - It is a kind of that the device for suppressing power-on impact current is realized based on zero passage detection - Google Patents
It is a kind of that the device for suppressing power-on impact current is realized based on zero passage detection Download PDFInfo
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- CN107592004A CN107592004A CN201710946058.9A CN201710946058A CN107592004A CN 107592004 A CN107592004 A CN 107592004A CN 201710946058 A CN201710946058 A CN 201710946058A CN 107592004 A CN107592004 A CN 107592004A
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Abstract
The invention discloses a kind of device that suppression power-on impact current is realized based on zero passage detection, including zero cross detection circuit, MCU units, supply relay, target base plate and AC power supplies, wherein, the zero cross detection circuit is used to carry out zero point detection to AC power supplies, and zero point detection signal is sent into MCU units.The present invention detects the zero point of AC power by zero cross detection circuit, and the actuation time for combining power supply relay calculates delay time, ensure to turn on relay adhesive in next zero point, it is electric to ensure that target frequency conversion board obtains at the zero point moment, power-on impact current is substantially reduced, and meets actual operation requirements.
Description
Technical field
The present invention relates to it is a kind of based on zero passage detection realize suppress power-on impact current device, be related to air-conditioning, refrigerator,
The technical fields such as washing machine.
Background technology
Household electrical appliances are exactly the abbreviation of household electrical appliance, electrical equipment refer to load on circuit in the narrow sense and for controlling, adjust or
The equipment of protection circuit, motor etc., such as loudspeaker, switch, rheostat, fuse；Sensu lato electrical equipment refers to using electric
The product being operated that element combines, usual they use electric power as energy source.The application of household electrical appliances converter technique
It is more and more extensive, there is the advantages of low energy consumption, efficiency high；Frequency conversion substrate all includes larger energy-storage capacitor, so
Dash current when electric on particular moment substrate is all very big, has a strong impact on the service life of related device.VFC at present
The method that device suppresses power-on impact current mainly has in power supply main line concatenation PTC resistor and short-circuit relay, or concatenation power water
The methods of mud resistance；And these side's methods certainly will cause certain power attenuation, energy consumption is increased.For this reason, it may be necessary to design one kind
New technical scheme, it can comprehensively overcome above-mentioned the shortcomings of the prior art.
The content of the invention
The present invention is exactly in view of the deficienciess of the prior art, providing a kind of suppression frequency-variable controller power-on impact current
Device, the device detect the zero point of AC power by zero cross detection circuit, and the actuation time for combining power supply relay counts
Delay time is calculated, ensures to turn on relay adhesive in next zero point, ensure that target frequency conversion board obtains at the zero point moment
Electricity, power-on impact current are substantially reduced, and meet actual operation requirements.
To solve the above problems, the technical solution used in the present invention is as follows：
It is a kind of that the device for suppressing power-on impact current, including zero cross detection circuit, MCU units, power supply are realized based on zero passage detection
Relay, target base plate and AC power supplies, wherein, the zero cross detection circuit is used to carry out zero point detection to AC power supplies, and by zero
Point detection signal is sent to MCU units.
As the improvement of above-mentioned technical proposal, wherein, the target base plate power supply controls power supply relay by the MCU units
The break-make of device is realized.
As the improvement of above-mentioned technical proposal, the target base plate obtains the zero point moment that the electric moment is AC power supplies, drops significantly
Low power-on impact current.
As the improvement of above-mentioned technical proposal, MCU units control supply relay closing time reserved power supply after
The delay time of electrical machinery action；It ensure that the target base plate obtains the zero point moment that the electric moment is AC power supplies.
Compared with prior art, implementation result of the invention is as follows by the present invention：
The present invention provides a kind of method for suppressing frequency-variable controller power-on impact current, and exchange is detected by zero cross detection circuit
The zero point of power supply, at this moment on the basis of combine power supply relay actuation time, calculate delay time, ensure next
Turn on relay adhesive during individual zero point, now target frequency conversion board is obtained electric at the zero point moment, and power-on impact current is dropped significantly
It is low, meet actual operation requirements.
Brief description of the drawings
Fig. 1 is the apparatus structure schematic diagram of the present invention realized based on zero passage detection and suppress power-on impact current；
Fig. 2 is control supply relay power-on time schematic diagram of the present invention.
Embodiment
Illustrate present disclosure below in conjunction with specific embodiments.
As depicted in figs. 1 and 2, realize that the device for suppressing power-on impact current shows based on zero passage detection to be of the present invention
It is intended to.
A kind of device that power-on impact current is realized based on zero passage detection of the present invention, as shown in Figure 1：Examined including zero passage
Slowdown monitoring circuit 1, MCU units 2, relay 3, target base plate 4 and AC power supplies.
Wherein, zero cross detection circuit 1 carries out zero point detection to AC power supplies, and zero point detection signal is sent into MCU units 2,
MCU units 2 are powered according to zero signal, control supply relay 3 in the next null point position of power supply to target base plate 4；Such as Fig. 2
It is shown, set the actuation time t0 of supply relay, then MCU units 2 obtain power supply zero signal at the T1 moment, at the T2 moment
Supply relay adhesive is controlled, after supply relay actuation time t0, supply relay closes completely；When being now T3
Carve, just next zero point after zero point is detected, now target base plate 4 obtains electric, and power-on impact current is minimum；And then press down
The purpose of power-on impact current processed.
Above content is detailed description made for the present invention in conjunction with specific embodiments, it is impossible to assert that the present invention is specific real
Apply and be only limitted to these explanations.For those skilled in the art, before present inventive concept is not departed from
Put, some simple deduction or replace can also be made, should all be considered as belonging to the scope of protection of the invention.
Claims (4)
1. a kind of realize the device for suppressing power-on impact current based on zero passage detection, it is characterised in that：Including zero cross detection circuit
（1）, MCU units（2）, supply relay（3）, target base plate（4）And AC power supplies, wherein, the zero cross detection circuit（1）For
Zero point detection is carried out to AC power supplies, and zero point detection signal is sent to MCU units（2）.
2. a kind of according to claim 1 realize the device for suppressing power-on impact current based on zero passage detection, it is characterised in that：
Wherein, the target base plate（4）Power supply is by the MCU units（2）Control supply relay（3）Break-make realize.
3. a kind of according to claim 1 realize the device for suppressing power-on impact current based on zero passage detection, it is characterised in that：
The target base plate（4）Obtain the zero point moment that the electric moment is AC power supplies, the power-on impact current substantially reduced.
4. a kind of according to claim 1 realize the device for suppressing power-on impact current based on zero passage detection, it is characterised in that：
The MCU units（2）Control supply relay（3）Closing time has reserved supply relay（3）The delay time of mechanical action；
It ensure that the target base plate（4）Obtain the zero point moment that the electric moment is AC power supplies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710946058.9A CN107592004A (en) | 2017-10-12 | 2017-10-12 | It is a kind of that the device for suppressing power-on impact current is realized based on zero passage detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710946058.9A CN107592004A (en) | 2017-10-12 | 2017-10-12 | It is a kind of that the device for suppressing power-on impact current is realized based on zero passage detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107592004A true CN107592004A (en) | 2018-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710946058.9A Pending CN107592004A (en) | 2017-10-12 | 2017-10-12 | It is a kind of that the device for suppressing power-on impact current is realized based on zero passage detection |
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| Country | Link |
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| CN (1) | CN107592004A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593846A (en) * | 2012-03-14 | 2012-07-18 | 江苏斯菲尔电气股份有限公司 | Zero-voltage-input thyristor-controlled trigger circuit |
| CN104426339A (en) * | 2013-08-19 | 2015-03-18 | 深圳市朗科智能电气股份有限公司 | Rectification and filtering device and method for suppressing power-on surge current |
| CN205583666U (en) * | 2016-05-11 | 2016-09-14 | 广东好太太智能科技有限公司 | Use zero passage protection circuit on electric airer |
-
2017
- 2017-10-12 CN CN201710946058.9A patent/CN107592004A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593846A (en) * | 2012-03-14 | 2012-07-18 | 江苏斯菲尔电气股份有限公司 | Zero-voltage-input thyristor-controlled trigger circuit |
| CN104426339A (en) * | 2013-08-19 | 2015-03-18 | 深圳市朗科智能电气股份有限公司 | Rectification and filtering device and method for suppressing power-on surge current |
| CN205583666U (en) * | 2016-05-11 | 2016-09-14 | 广东好太太智能科技有限公司 | Use zero passage protection circuit on electric airer |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180116 |