CN106532668A - Surge protection method, surge protection device and electric equipment - Google Patents
Surge protection method, surge protection device and electric equipment Download PDFInfo
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- CN106532668A CN106532668A CN201611130287.5A CN201611130287A CN106532668A CN 106532668 A CN106532668 A CN 106532668A CN 201611130287 A CN201611130287 A CN 201611130287A CN 106532668 A CN106532668 A CN 106532668A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
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Abstract
The invention discloses a surge protection method, a surge protection device and electric equipment. The surge protection method comprises the following steps of determining a phase of an input power supply of a power supply device; setting a benchmark reference threshold according to the phase of the power supply; obtaining a surge signal, judging whether an amplitude of the surge signal exceeds a current reference threshold during judgment and obtaining the reference threshold through modifying the benchmark reference threshold according to the phase of the power supply; if the amplitude of the surge signal exceeds the current reference threshold during judgment, triggering surge protection on the power supply device; and if the amplitude of the surge signal does not exceed the current reference threshold during judgment, modifying the reference threshold according to the phase of the power supply. According to the surge protection method, the reference threshold compared with the amplitude of the surge signal is adjusted according to the phase of the power supply, and the reference threshold is not fixed, so that surge protection is prevented from being falsely triggered by interference while the flexibility of surge protection is considered.
Description
Technical field
The present invention relates in electrical equipment field, more specifically, be related to a kind of surge protection side for supply unit
Method and surge protective device and electrical equipment.
Background technology
In the related, electrical equipment, such as frequency-conversion microwave oven often arrange wave from power input on hardware circuit
Detection circuit is gushed, and surging signal is input to into comparator.When surge detects the setting ginseng of the input signal than comparator of circuit
Examine value it is big when, then trigger comparator export cause power supply enter surge protection state.
But, for supply unit, the setting reference value of its surge protection voltage is often fixed.Can so make
Reference value must be set and be difficult to avoid interference the surge protection false triggering for causing while the susceptiveness for taking into account surge protection.
The content of the invention
Embodiment of the present invention is intended at least solve one of technical problem present in prior art.For this purpose, the present invention is real
The mode of applying needs to provide a kind of surge protection method and surge protective device and electrical equipment.
A kind of surge protection method of embodiment of the present invention, for supply unit, the surge protection method includes following
Step：
Determine the phase place of the input power of the supply unit；
Reference threshold value is arranged according to the phase place of the power supply；
Obtain surging signal and judge the amplitude of the surging signal whether reference threshold current more than when judging, the ginseng
Examine threshold value to be obtained according to the phase modification of the power supply by the reference threshold value；
If the amplitude of the surging signal exceedes current reference threshold when judging, trigger the surge to the supply unit and protect
Shield；
If the amplitude of the surging signal, should according to the phase modification of the power supply not above current reference threshold when judging
Reference threshold.
Above-mentioned surge protection method, the reference threshold compared with the amplitude of surging signal can be adjusted according to the phase place of power supply
It is whole so that reference threshold will not immobilize, and then while taking into account the susceptiveness of surge protection, avoid interference the surge for causing
Protection false triggering.
In some embodiments, the power supply is the power supply changed by sinusoidal rule, and the reference threshold is by the reference
Threshold value changes to change according to sinusoidal rule.
In some embodiments, include the step of the phase place of the input power for determining the supply unit：Obtaining should
The zero cross signal and supply frequency of power supply is determining the phase place of the power supply.
In some embodiments, described surge protection method, also including step：
Judge the amplitude of the next surging signal whether reference threshold current more than when judging；
If the amplitude of the next surging signal exceedes current reference threshold when judging, trigger to the supply unit
Surge protection；
If the amplitude of the next surging signal judges the zero passage of the power supply not above current reference threshold when judging
Whether point occurs；
If the zero crossing of the power supply occurs, the reference threshold value is arranged according to the phase place of the power supply；
If the zero crossing of the power supply does not occur, according to the phase modification reference threshold of the power supply.
A kind of surge protective device of embodiment of the present invention, for supply unit, the surge protective device includes processing
Module, surge detection module and comparison module, the processing module are used for the phase place and root of the input power for determining the supply unit
According to the phase place of the power supply, reference threshold value is set；
The surge detection module is used to obtain surging signal and export the surging signal to the comparison module；
The comparison module is used to judging the amplitude of the surging signal whether reference threshold current more than when judging, the ginseng
Examine threshold value to be obtained according to the phase modification of the power supply by the reference threshold value；
If the amplitude of the surging signal exceedes current reference threshold when judging, the processing module is used for triggering to the electricity
The surge protection of source device；
If, not above current reference threshold when judging, the processing module is for according to the electricity for the amplitude of the surging signal
The phase modification in the source reference threshold.
Above-mentioned surge protective device, the reference threshold compared with the amplitude of surging signal can be adjusted according to the phase place of power supply
It is whole so that reference threshold will not immobilize, and then while taking into account the susceptiveness of surge protection, avoid interference the surge for causing
Protection false triggering.
In some embodiments, the power supply is the power supply changed by sinusoidal rule, and the reference threshold is by the reference
Threshold value changes to change according to sinusoidal rule.
In some embodiments, it is determined that the supply unit input power phase place when, the processing module be used for obtain
The zero cross signal and supply frequency of the power supply are taken to determine the phase place of the power supply.
In some embodiments, whether the comparison module is used to judging the amplitude of the next surging signal more than sentencing
Current reference threshold when disconnected；
If the amplitude of the next surging signal exceedes current reference threshold when judging, the processing module is used to trigger
Surge protection to the supply unit；
If the amplitude of the next surging signal is not above current reference threshold when judging, the processing module is used to sentence
Whether the zero crossing of the disconnected power supply occurs；
If the zero crossing of the power supply occurs, the processing module is for arranging the reference threshold according to the phase place of the power supply
Value；
If the zero crossing of the power supply does not occur, the processing module is for the reference threshold of the phase modification according to the power supply.
A kind of electrical equipment of embodiment of the present invention, including supply unit and the surge described in any of the above-described embodiment
Protection device, the surge protective device connect the supply unit.
Above-mentioned electrical equipment, the reference threshold compared with the amplitude of surging signal can be adjusted according to the phase place of power supply,
So that reference threshold will not immobilize, and then while taking into account the susceptiveness of surge protection, avoid interference the surge protection for causing
False triggering.
In some embodiments, the electrical equipment is frequency-conversion microwave oven, and the supply unit is digital power-supply unit.
The additional aspect and advantage of embodiment of the present invention will be set forth in part in the description, partly by from following
Become obvious in description, or recognized by the practice of embodiment of the present invention.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of embodiment of the present invention is from retouching to embodiment with reference to accompanying drawings below
Will be apparent from stating with it is easy to understand, wherein：
Fig. 1 is the schematic flow sheet of the surge protection method of embodiment of the present invention；
Fig. 2 be embodiment of the present invention surge protection method in power supply and reference threshold change curve；
Fig. 3 is another schematic flow sheet of the surge protection method of embodiment of the present invention；
Fig. 4 is the module diagram of the electrical equipment of embodiment of the present invention.
Specific embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the drawings, wherein ad initio
Same or similar element or the element with same or like function are represented to same or similar label eventually.Below by ginseng
The embodiment for examining Description of Drawings is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and can not
It is interpreted as indicating or implying relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " the
One ", the feature of " second " can be expressed or implicitly include one or more feature.In description of the invention
In, " multiple " are meant that two or more, unless otherwise expressly limited specifically.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to be mechanically connected, or electrically connect or can be in communication with each other；Can be joined directly together, it is also possible to by between intermediary
Connect connected, can be connection or the interaction relationship of two elements of two element internals.For the ordinary skill of this area
For personnel, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.In order to
Simplify disclosure of the invention, hereinafter to the part of specific examples and be set for description.Certainly, they are only merely illustrative, and
And purpose does not lie in the restriction present invention.Additionally, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, itself not indicate between discussed various embodiments and/or setting
Relation.Additionally, the invention provides various specific technique and material example, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
Please join Fig. 1, a kind of surge protection method that embodiment of the present invention is provided, for supply unit, surge protection side
Method is comprised the following steps：
S11, determines the phase place of the input power of supply unit；
S12, arranges reference threshold value according to the phase place of power supply；
S13, obtains surging signal and judges the amplitude of the surging signal whether reference threshold current more than when judging, join
Examine threshold value to be obtained according to the phase modification of power supply by reference threshold value；
If the amplitude of surging signal exceedes reference threshold current when judging, S14 triggers the surge to supply unit and protects
Shield；
If the amplitude of surging signal is joined according to the phase modification of the power supply not above reference threshold current when judging, S15
Examine threshold value.
Above-mentioned surge protection method, the reference threshold compared with the amplitude of surging signal can be adjusted according to the phase place of power supply
It is whole so that reference threshold will not immobilize, and then while taking into account the susceptiveness of surge protection, avoid interference the surge for causing
Protection false triggering.
Specifically, input power is, for example, outside mains supply, and frequency is 50HZ, and voltage is 220V.Certainly, input power
Other types of power supply is can also be, and frequency is not limited to for 50HZ, power supply of the voltage for 220V.In one example, surge
The amplitude of signal is magnitude of voltage, and reference threshold is magnitude of voltage.
It is pointed out that in practical application, between step S12 and S13, implement surge protection method equipment or
When device is controlled on circuit or in program, typically have certain time delay and exist.This time delay is objective reality.
In some embodiments, determine supply unit input power phase place the step of S11 include：Obtain power supply
Zero cross signal and supply frequency are determining the phase place of power supply.
Thus, the phase place of power supply can be accurately determined by the zero cross signal and supply frequency of power supply.
Specifically, the zero cross signal of power supply can be detected by zero passage signal detection circuit.By the phase place for determining power supply, enter
And determine power supply phase reference point, phase reference point be, for example, power supply a power cycle starting point (such as first zero passage
Point), reference threshold value is, for example, come the reference threshold for determining based on the starting point of power cycle.By power supply phase reference point and
Reference threshold value can determine that Changing Pattern of the reference threshold in power cycle, relatively low near power supply zero passage so as to realize
The amplitude (magnitude of voltage) of surging signal can trigger surge protection, the amplitude just meeting of higher surging signal near power supply peak value
Triggering surge protection.The more sensitive surge protection of near zero-crossing point is realized, easy false triggering wave near peak value is turn avoid
Gush the problem of protection.
In some embodiments, power supply is the power supply changed by sinusoidal rule, and reference threshold is by reference threshold value root
Change to change according to sinusoidal rule.
Thus, the range of application of surge protection method is wider, it is adaptable to most of electrical equipment.
Specifically, incorporated by reference to Fig. 2, in Fig. 2, curve C1 represents the oscillogram of power supply, and curve C2 represents the change of reference threshold
Law, as seen from Figure 2, reference threshold is changed according to the phase place of power supply so that in sensitive surge protection and anti-error
Balance is obtained between triggering surge protection.
It should be noted that curve C2 is not sine wave, the amplitude of reference threshold is arranged and is greater than 0, therefore, curve C2 is not
Can intersect with transverse axis, in other words, the change curve C2 of reference threshold is the curve of a segment cycle function.Similar to Y=N+
sinT(0<T≤π) and Y=-N+sinT (π<T≤2 π) N be positive constant.So just can ensure that when power supply is close to zero crossing
Wait, the protection point corresponding to given threshold has enough differences with the normal voltage for detecting, will not because of disturbing or error,
Cause protection by mistake.Fig. 2 is as curve C2 is schematically shown, due to the problem of resolution, it is impossible to embody curve C2 and transverse axis
Disjoint feature.
In some embodiments, Fig. 3 please be join, surge protection method also includes step：
S21, judges the amplitude of the next surging signal whether reference threshold current more than when judging；
If the amplitude of next surging signal exceedes reference threshold current when judging, S14 triggers the wave to supply unit
Gush protection；
If the amplitude of next surging signal judges the zero crossing of power supply not above reference threshold current when judging, S23
Whether occur；
If the zero crossing of power supply occurs, S12, reference threshold value is arranged according to the phase place of power supply；
If the zero crossing of power supply does not occur, S15, according to the phase modification reference threshold of power supply.
So so that the judgement of surge protection method is more accurate.
Specifically, in the example of the present invention, incorporated by reference to Fig. 2, the phase place of power supply is changed by sinusoidal rule, in a power supply
In cycle T, power supply has 3 zero crossings A1, A2, A3.By the judgement to power supply zero crossing so that surge protection method can disappear
Except added up error between two zero crossings, and then can more accurately judge the modification of the phase place and reference threshold of power supply.
It is pointed out that in practical application, between step S15 and S21, implement surge protection method equipment or
When device is controlled on circuit or in program, typically have certain time delay and exist.This time delay is objective reality.
Please join Fig. 4, a kind of surge protective device 100 of embodiment of the present invention, for supply unit 200.Surge protection
Device 100 includes processing module 102, surge detection module 104 and comparison module 106, and processing module 102 is used to determine that power supply is filled
Put the phase place of 200 input power and reference threshold value is arranged according to the phase place of power supply；
Surge detection module 104 is used to obtain surging signal and export surging signal to comparison module 106；
Comparison module 106 is used to judging the amplitude of the surging signal whether reference threshold current more than when judging, refers to
Threshold value is obtained according to the phase modification of power supply by reference threshold value；
If the amplitude of surging signal exceedes reference threshold current when judging, processing module 102 is used for triggering and power supply is filled
Put 200 surge protection；
If, not above reference threshold current when judging, processing module 102 is for according to power supply for the amplitude of surging signal
The phase modification reference threshold.
Above-mentioned surge protective device 100, the reference threshold compared with the amplitude of surging signal can be according to the phase places of power supply
To adjust so that reference threshold will not immobilize, and then avoid interference what is caused while taking into account the susceptiveness of surge protection
Surge protection false triggering.
Specifically, processing module 102, surge detection module 104 and comparison module 106 can be realized by the mode of circuit,
The mode of software can also be added to realize by hardware.
It is pointed out that the explanation of the above-mentioned embodiment to surge protection method is also applied for present embodiment
Surge protective device 100, to avoid redundancy, here from being no longer developed in details in.
In some embodiments, power supply is the power supply changed by sinusoidal rule, and reference threshold is by reference threshold value root
Change to change according to sinusoidal rule.
It is pointed out that the explanation of the above-mentioned embodiment to surge protection method is also applied for present embodiment
Surge protective device 100, to avoid redundancy, here from being no longer developed in details in.
In some embodiments, it is determined that supply unit 200 input power phase place when, processing module 102 is used for
The zero cross signal and supply frequency of power supply are obtained to determine the phase place of power supply.
It is pointed out that the explanation of the above-mentioned embodiment to surge protection method is also applied for present embodiment
Surge protective device 100, to avoid redundancy, here from being no longer developed in details in.
In some embodiments, whether comparison module 106 is used to judging the amplitude of next surging signal more than sentencing
Current reference threshold when disconnected；
If the amplitude of next surging signal exceedes reference threshold current when judging, processing module 102 is used to trigger right
The surge protection of supply unit 200；
If the amplitude of next surging signal is not above reference threshold current when judging, processing module 102 is used to judge
Whether the zero crossing of power supply occurs；
If the zero crossing of power supply occurs, processing module 102 is for according to the phase place of power supply setting reference threshold value；
If the zero crossing of power supply does not occur, processing module 102 is for the phase modification reference threshold according to power supply.
It is pointed out that the explanation of the above-mentioned embodiment to surge protection method is also applied for present embodiment
Surge protective device 100, to avoid redundancy, here from being no longer developed in details in.
Please join Fig. 4, a kind of electrical equipment 300 of embodiment of the present invention, including supply unit 200 and any of the above-described enforcement
The surge protective device 100 of mode, the connection supply unit 200 of surge protective device 100.
Above-mentioned electrical equipment 300, the reference threshold compared with the amplitude of surging signal can be adjusted according to the phase place of power supply
It is whole so that reference threshold will not immobilize, and then while taking into account the susceptiveness of surge protection, avoid interference the surge for causing
Protection false triggering.
In some embodiments, electrical equipment 300 is frequency-conversion microwave oven, and supply unit 200 is digital power-supply unit.
In the description of this specification, reference term " embodiment ", " some embodiments ", " schematically enforcement
Mode ", " example ", " specific example ", or the description of " some examples " etc. mean what is described with reference to the embodiment or example
Specific features, structure, material or feature are contained at least one embodiment or example of the present invention.In this specification
In, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.And, the concrete spy of description
Levy, structure, material or feature can be combined in one or more any embodiment or example in an appropriate manner.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include feature described at least one.In describing the invention, " multiple " are meant that at least two, such as two,
Three etc., unless otherwise expressly limited specifically.
In flow chart or here any process described otherwise above or method description are construed as, expression includes
It is one or more for realizing specific logical function or process the step of the module of code of executable instruction, fragment or portion
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein the suitable of shown or discussion can not be pressed
Sequence, including according to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or here logic described otherwise above and/or step, for example, are considered use in flow charts
In the order list of the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (as computer based system, the system including processor or other can hold from instruction
The system of row system, device or equipment instruction fetch execute instruction) use, or with reference to these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicate, propagate or pass
The dress that defeated program is used for instruction execution system, device or equipment or with reference to these instruction execution systems, device or equipment
Put.The more specifically example (non-exhaustive list) of computer-readable medium is including following：With the electricity that one or more connect up
Connecting portion (mobile terminal), portable computer diskette box (magnetic device), random access memory (RAM), read only memory
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program thereon or other are suitable
Medium, because for example by carrying out optical scanning to paper or other media edlin, interpretation can then be entered or if necessary with which
His suitable method is processed to electronically obtain described program, is then stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, the software that multiple steps or method can be performed in memory and by suitable instruction execution system with storage
Or firmware is realizing.For example, if realized with hardware, and in another embodiment, can be with well known in the art
Any one of row technology or their combination are realizing：With for the logic gates of logic function is realized to data signal
Discrete logic, the special IC with suitable combinational logic gate circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that to realize all or part that above-mentioned embodiment method is carried
The hardware that step can be by program to instruct correlation is completed, and described program can be stored in a kind of computer-readable storage
In medium, described program upon execution, including one or a combination set of the step of method embodiment.
Additionally, each functional unit in each embodiment of the invention can be integrated in a processing module, also may be used
Being that unit is individually physically present, it is also possible to which two or more units are integrated in a module.It is above-mentioned integrated
Module both can be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.The integrated module
If using in the form of software function module realize and as independent production marketing or use when, it is also possible to be stored in a calculating
In machine read/write memory medium.Storage medium mentioned above can be read only memory, disk or CD etc..
Although embodiments of the present invention have been shown and described above, it is to be understood that above-mentioned embodiment is
Exemplary, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be right
Above-mentioned embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of surge protection method, for supply unit, it is characterised in that the surge protection method is comprised the following steps：
Determine the phase place of the input power of the supply unit；
Reference threshold value is arranged according to the phase place of the power supply；
Obtain surging signal and judge the amplitude of the surging signal whether reference threshold current more than when judging, this refers to threshold
Value is obtained according to the phase modification of the power supply by the reference threshold value；
If the amplitude of the surging signal exceedes current reference threshold when judging, the surge protection to the supply unit is triggered；
If the amplitude of the surging signal is not above current reference threshold when judging, according to the phase modification reference of the power supply
Threshold value.
2. surge protection method as claimed in claim 1, it is characterised in that the power supply is the power supply changed by sinusoidal rule,
The reference threshold is changed to change by the reference threshold value according to sinusoidal rule.
3. surge protection method as claimed in claim 1, it is characterised in that the input power of the determination supply unit
The step of phase place, includes：The zero cross signal and supply frequency of the power supply are obtained to determine the phase place of the power supply.
4. surge protection method as claimed in claim 1, it is characterised in that also including step：
Judge the amplitude of the next surging signal whether reference threshold current more than when judging；
If the amplitude of the next surging signal exceedes current reference threshold when judging, the surge to the supply unit is triggered
Protection；
If not above current reference threshold when judging, the amplitude of the next surging signal judges that the zero crossing of the power supply is
No appearance；
If the zero crossing of the power supply occurs, the reference threshold value is arranged according to the phase place of the power supply；
If the zero crossing of the power supply does not occur, according to the phase modification reference threshold of the power supply.
5. a kind of surge protective device, for supply unit, it is characterised in that the surge protective device includes processing module, wave
Detection module and comparison module are gushed, the processing module is used for the phase place of the input power for determining the supply unit and according to the power supply
Phase place arrange reference threshold value；
The surge detection module is used to obtain surging signal and export the surging signal to the comparison module；
The comparison module is used to judging the amplitude of the surging signal whether reference threshold current more than when judging, this refers to threshold
Value is obtained according to the phase modification of the power supply by the reference threshold value；
If the amplitude of the surging signal exceedes current reference threshold when judging, the processing module is used for triggering and the power supply is filled
The surge protection put；
If, not above current reference threshold when judging, the processing module is for according to the power supply for the amplitude of the surging signal
The phase modification reference threshold.
6. surge protective device as claimed in claim 5, it is characterised in that the power supply is the power supply changed by sinusoidal rule,
The reference threshold is changed to change by the reference threshold value according to sinusoidal rule.
7. surge protective device as claimed in claim 5, it is characterised in that it is determined that the supply unit input power phase
During position, the processing module is used for the zero cross signal and supply frequency that obtain the power supply to determine the phase place of the power supply.
8. surge protective device as claimed in claim 5, it is characterised in that the comparison module is used to judge the next surge
The amplitude of signal whether reference threshold current more than when judging；
If the amplitude of the next surging signal exceedes current reference threshold when judging, the processing module is used for triggering to this
The surge protection of supply unit；
If the amplitude of the next surging signal is not above current reference threshold when judging, the processing module is used to judge this
Whether the zero crossing of power supply occurs；
If the zero crossing of the power supply occurs, the processing module is for arranging the reference threshold value according to the phase place of the power supply；
If the zero crossing of the power supply does not occur, the processing module is for the reference threshold of the phase modification according to the power supply.
9. a kind of electrical equipment, it is characterised in that including supply unit and the surge protection as described in any one of claim 5-8
Device, the surge protective device connect the supply unit.
10. electrical equipment as claimed in claim 9, it is characterised in that the electrical equipment is frequency-conversion microwave oven, the supply unit
For digital power-supply unit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611130287.5A CN106532668B (en) | 2016-12-09 | 2016-12-09 | Surge protection method and surge protective device and electrical equipment |
| PCT/CN2017/097407 WO2018103368A1 (en) | 2016-12-09 | 2017-08-14 | Surge protection method, surge protection device and electrical apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611130287.5A CN106532668B (en) | 2016-12-09 | 2016-12-09 | Surge protection method and surge protective device and electrical equipment |
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| CN106532668B CN106532668B (en) | 2018-11-30 |
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| WO2018103368A1 (en) * | 2016-12-09 | 2018-06-14 | 广东美的厨房电器制造有限公司 | Surge protection method, surge protection device and electrical apparatus |
| CN108711822A (en) * | 2018-05-23 | 2018-10-26 | 浙江中凯科技股份有限公司 | A kind of guard method of residual current, device and residual current operated protective device |
| CN117748692A (en) * | 2024-02-20 | 2024-03-22 | 深圳市微克科技股份有限公司 | Intelligent charging method, system and storage medium based on surge and static protection |
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| CN109522615B (en) * | 2018-10-26 | 2022-08-19 | 国网河南省电力公司电力科学研究院 | Method and device for evaluating zero-sequence inrush current tolerance of relay protection of power system |
| CN114498548B (en) * | 2022-01-21 | 2023-10-31 | 科威尔技术股份有限公司 | Overcurrent protection method and device |
| CN116760154A (en) * | 2023-08-18 | 2023-09-15 | 合肥联宝信息技术有限公司 | Power supply control circuit and method |
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| CN105015366B (en) * | 2015-07-16 | 2017-04-12 | 西南交通大学 | Phase switching method for rapidly adjusting phase of reference voltage of inverter |
| CN106532668B (en) * | 2016-12-09 | 2018-11-30 | 广东美的厨房电器制造有限公司 | Surge protection method and surge protective device and electrical equipment |
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| CN201590659U (en) * | 2009-10-25 | 2010-09-22 | 美的集团有限公司 | Surge response protection circuit of induction cooker |
| CN102707121A (en) * | 2012-06-14 | 2012-10-03 | 美的集团有限公司 | Voltage surge detection circuit |
| US20160072389A1 (en) * | 2014-09-09 | 2016-03-10 | Hon Hai Precision Industry Co., Ltd. | Multiple-phase power circuit |
| CN105450004A (en) * | 2014-09-18 | 2016-03-30 | Det国际控股有限公司 | Power supply with surge voltage protection |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018103368A1 (en) * | 2016-12-09 | 2018-06-14 | 广东美的厨房电器制造有限公司 | Surge protection method, surge protection device and electrical apparatus |
| CN108711822A (en) * | 2018-05-23 | 2018-10-26 | 浙江中凯科技股份有限公司 | A kind of guard method of residual current, device and residual current operated protective device |
| CN108711822B (en) * | 2018-05-23 | 2020-02-21 | 浙江中凯科技股份有限公司 | Residual current protection method and device and residual current protector |
| CN117748692A (en) * | 2024-02-20 | 2024-03-22 | 深圳市微克科技股份有限公司 | Intelligent charging method, system and storage medium based on surge and static protection |
| CN117748692B (en) * | 2024-02-20 | 2024-06-07 | 深圳市微克科技股份有限公司 | Intelligent charging method, system and storage medium based on surge and static protection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106532668B (en) | 2018-11-30 |
| WO2018103368A1 (en) | 2018-06-14 |
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