CN106532668B - Surge protection method and surge protective device and electrical equipment - Google Patents
Surge protection method and surge protective device and electrical equipment Download PDFInfo
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- CN106532668B CN106532668B CN201611130287.5A CN201611130287A CN106532668B CN 106532668 B CN106532668 B CN 106532668B CN 201611130287 A CN201611130287 A CN 201611130287A CN 106532668 B CN106532668 B CN 106532668B
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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 kind of surge protection method and surge protective device and electrical equipments.Surge protection method includes the following steps：Determine the phase of the input power of power supply device；According to the phase of power supply, reference threshold value is set；It obtains surging signal and judges whether the amplitude of surging signal is more than the reference threshold current when judging, reference threshold is obtained by reference threshold value according to the phase modification of power supply；If the amplitude of surging signal is more than reference threshold current when judging, the surge protection to power supply device is triggered；If the amplitude of surging signal is not above reference threshold current when judging, according to the phase modification reference threshold of power supply.Above-mentioned surge protection method, the reference threshold compared with the amplitude of surging signal can be adjusted according to the phase of power supply, so that reference threshold will not immobilize, and then take into account the sensitivity of surge protection while avoids surge protection false triggering caused by interference.
Description
Technical field
The present invention relates in electrical equipment field, more specifically, it is related to a kind of surge protection side for power supply device
Method and surge protective device and electrical equipment.
Background technique
In the related art, electrical equipment, as often wave is arranged from power input on hardware circuit in frequency-conversion microwave oven
Detection circuit is gushed, and surging signal is input to comparator.When setting of the input signal of surge detection circuit than comparator is joined
Examine value it is big when, then trigger comparator output so that power supply enters surge protection state.
But for power supply device, the setting reference value of surge protection voltage is often fixed.It can make in this way
Reference value must be set and be difficult surge protection false triggering caused by avoiding interference while taking into account the sensitivity of surge protection.
Summary of the invention
Embodiment of the present invention aims to solve at least one of the technical problems existing in the 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 is used for power supply device, which includes following
Step：
Determine the phase of the input power of the power supply device；
According to the phase of the power supply, reference threshold value is set；
It obtains surging signal and judges whether the amplitude of the surging signal is more than the reference threshold current when judging, the ginseng
It examines threshold value and is obtained by the reference threshold value according to the phase modification of the power supply；
If the amplitude of the surging signal is more than the reference threshold current when judging, triggers and the surge of the power supply device is protected
Shield；
If the amplitude of the surging signal, should according to the phase modification of the power supply not above the reference threshold current 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 of power supply
Whole, so that reference threshold will not immobilize, and then take into account the sensitivity of surge protection while, avoids surge caused by interference
Protect false triggering.
In some embodiments, which is the power supply changed by sinusoidal rule, and the reference threshold is by the reference
Threshold value is modified according to sinusoidal rule variation.
In some embodiments, the step of phase of the input power of the determination power supply device includes：Obtaining should
The zero cross signal and supply frequency of power supply are with the phase of the determining power supply.
In some embodiments, the surge protection method, further includes step：
Whether the amplitude for judging next surging signal is more than the reference threshold current when judging；
If the amplitude of next surging signal is more than the reference threshold current when judging, trigger to the power supply device
Surge protection；
If the amplitude of next surging signal judges the zero passage of the power supply not above the reference threshold current when judging
Whether point occurs；
If the zero crossing of the power supply occurs, which is arranged according to the phase of the power supply；
If the zero crossing of the power supply does not occur, according to the phase modification of the power supply reference threshold.
A kind of surge protective device of embodiment of the present invention, is used for power supply device, which includes processing
Module, surge detection module and comparison module, the processing module are used to determine the phase and root of the input power of the power supply device
According to the phase of the power supply, reference threshold value is set；
The surge detection module is for obtaining surging signal and exporting the surging signal to the comparison module；
The comparison module is for judging whether the amplitude of the surging signal is more than the reference threshold current when judging, the ginseng
It examines threshold value and is obtained by the reference threshold value according to the phase modification of the power supply；
If the amplitude of the surging signal is more than the reference threshold current when judging, the processing module is for triggering to the electricity
The surge protection of source device；
If the amplitude of the surging signal is used for not above the reference threshold current when judging, the processing module according to the electricity
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 of power supply
Whole, so that reference threshold will not immobilize, and then take into account the sensitivity of surge protection while, avoids surge caused by interference
Protect false triggering.
In some embodiments, which is the power supply changed by sinusoidal rule, and the reference threshold is by the reference
Threshold value is modified according to sinusoidal rule variation.
In some embodiments, in the phase for the input power for determining the power supply device, the processing module is for obtaining
Zero cross signal and the supply frequency of the power supply are taken to determine the phase of the power supply.
In some embodiments, the comparison module is for judging whether the amplitude of next surging signal is more than to sentence
Current reference threshold when disconnected；
If the amplitude of next surging signal is more than the reference threshold current when judging, the processing module is for triggering
To the surge protection of the power supply device；
If the amplitude of next surging signal is not above the reference threshold current when judging, the processing module is for sentencing
Whether the zero crossing of the power supply of breaking occurs；
If the zero crossing of the power supply occurs, which is used to that the reference threshold to be arranged according to the phase of the power supply
Value；
If the zero crossing of the power supply does not occur, which is used for according to the phase modification of the power supply reference threshold.
A kind of electrical equipment of embodiment of the present invention, including surge described in power supply device and any of the above-described embodiment
Protective device, the surge protective device connect the power supply device.
Above-mentioned electrical equipment, the reference threshold compared with the amplitude of surging signal can be adjusted according to the phase of power supply,
So that reference threshold will not immobilize, and then take into account the sensitivity of surge protection while, avoids surge protection caused by interference
False triggering.
In some embodiments, which is frequency-conversion microwave oven, which 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, partially will be from following
Become obvious in description, or the practice of embodiment is recognized through the invention.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of embodiment of the present invention retouch embodiment from conjunction with following accompanying drawings
It will be apparent and be readily appreciated that in stating, wherein：
Fig. 1 is the flow diagram of the surge protection method of embodiment of the present invention；
Fig. 2 is the change curve of power supply and reference threshold in the surge protection method of embodiment of the present invention；
Fig. 3 is another flow diagram 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 accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include one or more feature.In description of the invention
In, the meaning of " plurality " is two or more, unless otherwise specifically defined.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected or can be in communication with each other；It can be directly connected, it can also be by between intermediary
It connects connected, can be the connection inside two elements or the interaction relationship of two elements.For the ordinary skill of this field
For personnel, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
Following disclosure provides many different embodiments or example is used to realize different structure of the invention.In order to
Simplify disclosure of the invention, hereinafter to the component of specific examples and being set for describing.Certainly, they are merely examples, and
And it is not intended to limit the present invention.In addition, 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
Relationship.In addition, the present invention provides various specific techniques 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.
It please join Fig. 1, a kind of surge protection method that embodiment of the present invention provides is used for power supply device, surge protection side
Method includes the following steps：
S11 determines the phase of the input power of power supply device；
Reference threshold value is arranged according to the phase of power supply in S12；
S13 obtains surging signal and judges whether the amplitude of surging signal is more than the reference threshold current when judging, joins
It examines threshold value and is obtained by reference threshold value according to the phase modification of power supply；
If the amplitude of surging signal is more than reference threshold current when judging, S14 is triggered and is protected to the surge of power supply device
Shield；
If the amplitude of surging signal is joined not above reference threshold current when judging, S15 according to the phase modification of the power supply
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 of power supply
Whole, so that reference threshold will not immobilize, and then take into account the sensitivity of surge protection while, avoids surge caused by interference
Protect false triggering.
Specifically, input power is, for example, external mains supply, frequency 50HZ, voltage 220V.Certainly, input power
It can also be other types of power supply, and being not limited to frequency is 50HZ, voltage is the power supply of 220V.In one example, surge
The amplitude of signal is voltage value, and reference threshold is voltage value.
It should be pointed out that in practical application, between step S12 and S13, implement surge protection method equipment or
Device generally has certain delay and exists when controlling on circuit or in program.This delay is objective reality.
In some embodiments, determine that the step S11 of the phase of the input power of power supply device includes：Obtain power supply
Zero cross signal and supply frequency are to determine the phase of power supply.
In this way, the phase 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 determining the phase of power supply, into
And determining the phase reference point of power supply, phase reference point is, for example, starting point (such as first zero passage of the power supply in a power cycle
Point), the reference threshold that reference threshold value is, for example, the starting point based on power cycle to determine.By power supply phase reference point and
Reference threshold value can determine changing rule of the reference threshold in power cycle, to realize lower near power supply zero passage
The amplitude (voltage value) of surging signal can trigger surge protection, the amplitude of the higher surging signal just meeting near power supply peak value
Trigger surge protection.The more sensitive surge protection of near zero-crossing point is realized, peak value is in turn avoided and is nearby easy false triggering wave
The problem of gushing protection.
In some embodiments, power supply is the power supply changed by sinusoidal rule, and reference threshold is by reference threshold value root
It is modified according to sinusoidal rule variation.
In this way, the application range of surge protection method is wider, it is suitable for most of electrical equipment.
Specifically, incorporated by reference to Fig. 2, in Fig. 2, curve C1 represents the waveform diagram of power supply, and curve C2 represents the change of reference threshold
Law, as seen from Figure 2, reference threshold are modified according to the phase 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 setting of reference threshold is greater than 0, and therefore, curve C2 is not
It can intersect with horizontal 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<The π of T≤2) N be positive constant.Just can ensure that in this way power supply close to zero crossing when
Wait, protection point corresponding to given threshold has enough differences with the normal voltage detected, will not because of interfering or error,
It causes accidentally to protect.Fig. 2 is the problem of due to resolution ratio, can not to embody curve C2 and horizontal axis as schematically showing curve C2
Disjoint feature.
In some embodiments, Fig. 3 please be join, surge protection method further includes step：
S21 judges whether the amplitude of next surging signal is more than the reference threshold current when judging；
If the amplitude of next surging signal is more than reference threshold current when judging, S14 triggers the wave to power supply device
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 of power supply；
If the zero crossing of power supply does not occur, S15, according to the phase modification reference threshold of power supply.
In this way, making the judgement of surge protection method more acurrate.
Specifically, in example of the invention, incorporated by reference to Fig. 2, the phase 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, surge protection method is disappeared
Except the error added up between two zero crossings, and then it can more accurately judge the phase of power supply and the modification of reference threshold.
It should be pointed out that in practical application, between step S15 and S21, implement surge protection method equipment or
Device generally has certain delay and exists when controlling on circuit or in program.This delay is objective reality.
It please join Fig. 4, a kind of surge protective device 100 of embodiment of the present invention is used for power supply device 200.Surge protection
Device 100 includes processing module 102, surge detection module 104 and comparison module 106, and processing module 102 is for determining that power supply fills
It sets the phase of 200 input power and reference threshold value is arranged according to the phase of power supply；
Surge detection module 104 is for obtaining surging signal and exporting surging signal to comparison module 106；
Comparison module 106 is referred to for judging whether the amplitude of surging signal is more than the reference threshold current when judging
Threshold value is obtained by reference threshold value according to the phase modification of power supply；
If the amplitude of surging signal is more than reference threshold current when judging, processing module 102 fills power supply for triggering
Set 200 surge protection；
If the amplitude of surging signal is used for not above reference threshold current when judging, processing module 102 according to power supply
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 of power supply
It adjusts, so that reference threshold will not immobilize, and then take into account the sensitivity of surge protection while avoids caused by interference
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 should be pointed out that the explanation of the above-mentioned embodiment to surge protection method is also applied for present embodiment
Surge protective device 100 be no longer developed in details herein to avoid redundancy.
In some embodiments, power supply is the power supply changed by sinusoidal rule, and reference threshold is by reference threshold value root
It is modified according to sinusoidal rule variation.
It should be pointed out that the explanation of the above-mentioned embodiment to surge protection method is also applied for present embodiment
Surge protective device 100 be no longer developed in details herein to avoid redundancy.
In some embodiments, when determining the phase of input power of power supply device 200, processing module 102 is used for
Zero cross signal and the supply frequency of power supply are obtained to determine the phase of power supply.
It should be pointed out that the explanation of the above-mentioned embodiment to surge protection method is also applied for present embodiment
Surge protective device 100 be no longer developed in details herein to avoid redundancy.
In some embodiments, comparison module 106 is for judging whether the amplitude of next surging signal is more than to sentence
Current reference threshold when disconnected；
If the amplitude of next surging signal is more than reference threshold current when judging, processing module 102 is for triggering pair
The surge protection of power supply device 200；
If the amplitude of next surging signal is not above reference threshold current when judging, processing module 102 is for judging
Whether the zero crossing of power supply occurs；
If the zero crossing of power supply occurs, processing module 102 is used to that reference threshold value to be arranged according to the phase of power supply；
If the zero crossing of power supply does not occur, processing module 102 is used for the phase modification reference threshold according to power supply.
It should be pointed out that the explanation of the above-mentioned embodiment to surge protection method is also applied for present embodiment
Surge protective device 100 be no longer developed in details herein to avoid redundancy.
It please join Fig. 4, a kind of electrical equipment 300 of embodiment of the present invention, including power supply device 200 and any of the above-described implementation
The surge protective device 100 of mode, surge protective device 100 connect power supply device 200.
Above-mentioned electrical equipment 300, the reference threshold compared with the amplitude of surging signal can be adjusted according to the phase of power supply
Whole, so that reference threshold will not immobilize, and then take into account the sensitivity of surge protection while, avoids surge caused by interference
Protect false triggering.
In some embodiments, electrical equipment 300 is frequency-conversion microwave oven, and power supply device 200 is digital power-supply unit.
In the description of this specification, reference term " embodiment ", " certain embodiments ", " schematically implementation
What the description of mode ", " example ", " specific example " or " some examples " etc. meant to describe in conjunction with the embodiment or example
Particular features, structures, materials, or characteristics are contained at least one embodiment or example of the invention.In this specification
In, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, the specific spy of description
Sign, structure, material or feature can be combined in any suitable manner in any one or more embodiments or example.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one described feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two,
Three etc., unless otherwise specifically defined.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discussed suitable
Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, to execute function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system, including the system of processor or other can be held from instruction
The instruction fetch of row system, device or equipment and the system executed instruction) it uses, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium ", which can be, any may include, stores, communicates, propagates or pass
Defeated program is for instruction execution system, device or equipment or the dress used in conjunction with these instruction execution systems, device or equipment
It sets.The more specific example (non-exhaustive list) of computer-readable medium includes following：Electricity with one or more wiring
Interconnecting piece (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 on it or other are suitable
Medium, because can then be edited, be interpreted or when necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each section of the invention can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realized.It, and in another embodiment, can be under well known in the art for example, if realized with hardware
Any one of column technology or their combination are realized：With for realizing the logic gates of logic function to data-signal
Discrete logic, with suitable combinational logic gate circuit specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are understood that realize all or part that above embodiment method carries
Step is that relevant hardware can be instructed to complete by program, and the program can store in a kind of computer-readable storage
In medium, described program when being executed, includes the steps that one or a combination set of method implementation.
In addition, each functional unit in each embodiment of the present invention can integrate in a processing module, it can also
To be that each unit physically exists alone, can also be integrated in two or more units in a module.It is above-mentioned integrated
Module both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module
If in the form of software function module realize and when sold or used as an independent product, also can store one 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 embodiment is
Illustratively, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be right
Above embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of surge protection method is used for power supply device, which is characterized in that the surge protection method includes the following steps：
Determine the phase of the input power of the power supply device；
According to the phase of the power supply, reference threshold value is set；
It obtains surging signal and judges whether the amplitude of the surging signal is more than the reference threshold current when judging, this refers to threshold
Value is obtained by the reference threshold value according to the phase modification of the power supply；
If the amplitude of the surging signal is more than the reference threshold current when judging, the surge protection to the power supply device is triggered；
If the amplitude of the surging signal is not above the reference threshold current when judging, according to the reference of the phase modification of the power supply
Threshold value.
2. surge protection method as described in claim 1, which is characterized in that the power supply is the power supply changed by sinusoidal rule,
The reference threshold is modified by the reference threshold value according to sinusoidal rule variation.
3. surge protection method as described in claim 1, which is characterized in that the input power of the determination power supply device
The step of phase includes：Zero cross signal and the supply frequency of the power supply are obtained to determine the phase of the power supply.
4. surge protection method as described in claim 1, which is characterized in that further include step：
Whether the amplitude for judging next surging signal is more than the reference threshold current when judging；
If the amplitude of next surging signal is more than the reference threshold current when judging, the surge to the power supply device is triggered
Protection；
If the amplitude of next surging signal judges that the zero crossing of the power supply is not above the reference threshold current when judging
No appearance；
If the zero crossing of the power supply occurs, which is arranged according to the phase of the power supply；
If the zero crossing of the power supply does not occur, according to the phase modification of the power supply reference threshold.
5. a kind of surge protective device is used for power supply device, which is characterized in that the surge protective device includes processing module, wave
Detection module and comparison module are gushed, which is used to determine the phase of the input power of the power supply device and according to the power supply
Phase be arranged reference threshold value；
The surge detection module is for obtaining surging signal and exporting the surging signal to the comparison module；
For the comparison module for judging whether the amplitude of the surging signal is more than the reference threshold current when judging, this refers to threshold
Value is obtained by the reference threshold value according to the phase modification of the power supply；
If the amplitude of the surging signal is more than the reference threshold current when judging, which fills the power supply for triggering
The surge protection set；
If the amplitude of the surging signal is used for not above the reference threshold current when judging, the processing module according to the power supply
The phase modification reference threshold.
6. surge protective device as claimed in claim 5, which is characterized in that the power supply is the power supply changed by sinusoidal rule,
The reference threshold is modified by the reference threshold value according to sinusoidal rule variation.
7. surge protective device as claimed in claim 5, which is characterized in that in the phase for the input power for determining the power supply device
When position, which is used to obtain zero cross signal and the supply frequency of the power supply to determine the phase of the power supply.
8. surge protective device as claimed in claim 5, which is characterized in that the comparison module is for judging next surge
Whether the amplitude of signal is more than the reference threshold current when judging；
If the amplitude of next surging signal is more than the reference threshold current when judging, the processing module is for triggering to this
The surge protection of power supply device；
If the amplitude of next surging signal is not above the reference threshold current when judging, the processing module is for judging this
Whether the zero crossing of power supply occurs；
If the zero crossing of the power supply occurs, which is used to that the reference threshold value to be arranged according to the phase of the power supply；
If the zero crossing of the power supply does not occur, which is used for according to the phase modification of the power supply reference threshold.
9. a kind of electrical equipment, which is characterized in that including power supply device and such as the described in any item surge protections of claim 5-8
Device, the surge protective device connect the power supply device.
10. electrical equipment as claimed in claim 9, which is characterized in that the electrical equipment is frequency-conversion microwave oven, the power supply device
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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| CN106532668A CN106532668A (en) | 2017-03-22 |
| CN106532668B true CN106532668B (en) | 2018-11-30 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
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| 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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| US5748093A (en) * | 1996-03-19 | 1998-05-05 | Joslyn Electronic Systems Corporation | Electrical surge protection system with condition monitoring |
| CN203056565U (en) * | 2012-09-11 | 2013-07-10 | 九阳股份有限公司 | Induction cooker surge protection circuit |
| CN103312200B (en) * | 2013-06-28 | 2016-08-10 | 成都芯源***有限公司 | Power converter, current limiting unit, control circuit and related control method |
| TWI549407B (en) * | 2014-09-09 | 2016-09-11 | 鴻海精密工業股份有限公司 | Multiphase power circuit |
| 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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- 2016-12-09 CN CN201611130287.5A patent/CN106532668B/en active Active
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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 |
| CN105450004A (en) * | 2014-09-18 | 2016-03-30 | Det国际控股有限公司 | Power supply with surge voltage protection |
| CN104466900A (en) * | 2014-12-10 | 2015-03-25 | 英飞特电子（杭州）股份有限公司 | Input voltage overvoltage protection circuit |
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| CN106532668A (en) | 2017-03-22 |
| WO2018103368A1 (en) | 2018-06-14 |
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