CN107355964A - Air conditioning unit and overvoltage protection method and device thereof - Google Patents
Air conditioning unit and overvoltage protection method and device thereof Download PDFInfo
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- CN107355964A CN107355964A CN201710616133.5A CN201710616133A CN107355964A CN 107355964 A CN107355964 A CN 107355964A CN 201710616133 A CN201710616133 A CN 201710616133A CN 107355964 A CN107355964 A CN 107355964A
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000004378 air conditioning Methods 0.000 title abstract description 12
- 238000004364 calculation method Methods 0.000 claims description 16
- 230000000052 comparative effect Effects 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 3
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- 238000005516 engineering process Methods 0.000 description 5
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
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Abstract
The invention discloses an air conditioning unit and a method and a device for protecting the over-low voltage of the air conditioning unit. The air conditioning unit overvoltage protection method comprises the following steps: calculating the effective value of the unit voltage according to the root mean square; calculating a unit voltage effective value according to the peak value; and judging whether to carry out undervoltage protection on the unit according to the comparison result of the root-mean-square value, the peak-peak effective value and the undervoltage protection value, wherein the root-mean-square value is the unit voltage effective value calculated according to the root-mean-square, and the peak-peak effective value is the unit voltage effective value calculated according to the peak-peak. The method carries out the over-low voltage protection by combining two methods of calculating the effective value by the root mean square and calculating the effective value by the peak-to-peak value, thereby not only ensuring the over-low normal voltage protection in the running process of the unit, but also avoiding the over-low voltage protection of false alarm in the starting process.
Description
Technical field
The present invention relates to field of air conditioning, more particularly to a kind of air-conditioner set and its brownout guard method and device.
Background technology
Electric current is big during Large Central Air Conditioning System unit starting, duration length, and causing to start voltage (root-mean-square value) has quite
Long a period of time is in the brownout protection device protection compared with low state, ultimately resulted on air-conditioner set, prevents unit from complete
Into launching into normal operation.
It is as follows to solve this problem existing method：Increase brownout protection detection time, avoid start-up course.
But the shortcomings that existing solution method is, guard time too low if occurring supply voltage in unit normal operation
It is longer, it is impossible to protection in time.
The content of the invention
In view of above technical problem, the invention provides a kind of air-conditioner set and its brownout guard method and device,
Both the too low protection of normal voltage in unit running process had been ensure that, it also avoid reporting brownout protection in start-up course by mistake.
According to an aspect of the present invention, there is provided a kind of air-conditioner set brownout guard method, including：
According to root mean square calculation unit voltage effective value；
Unit voltage effective value is calculated according to peak-to-peak value；
According to root-mean-square value and peak peak virtual value and the comparative result of brownout protection value, judge whether to carry out unit
Brownout is protected, wherein, root-mean-square value is the unit voltage effective value according to root mean square calculation, and peak virtual value in peak is according to peak
The unit voltage effective value of peak computational.
In one embodiment of the invention, it is described according to root-mean-square value and peak peak virtual value and brownout protection value
Comparative result, judges whether unit needs progress brownout protection to include：
If meeting condition one, brownout protection is carried out to unit, wherein：
Condition one is：Detect that root-mean-square value and peak peak virtual value are respectively less than and are equal to voltage mistake in continuous first scheduled time
Minimum living shield value, wherein first scheduled time be less than the unit starting time.
In one embodiment of the invention, it is described according to root-mean-square value and peak peak virtual value and brownout protection value
Comparative result, judges whether unit needs progress brownout protection to include：
If meeting any one of condition one and condition two, brownout protection is carried out to unit, wherein：
Condition two is：Detect that root-mean-square value is less than or equal to brownout protection value in continuous second scheduled time, wherein
Second scheduled time is more than the unit starting time.
In one embodiment of the invention, after starting to carry out brownout protection to unit, methods described is also wrapped
Include：
Prompting message is sent out, to prompt user's unit to be in brownout protected mode.
In one embodiment of the invention, methods described also includes：
During unit starting, brownout protection is not carried out to unit；
In unit normal operation, in the case that mains voltage waveform is standard sine wave and supply voltage reduces, energy
Brownout protection is carried out according to a pair of units of condition.
In one embodiment of the invention, methods described also includes：In unit normal operation, work as mains voltage waveform
In the case of having distortion and supply voltage reduction, brownout protection can be carried out to unit according to condition two.
According to another aspect of the present invention, there is provided a kind of air-conditioner set brownout protection device, including：
Root-mean-square value computing module, for according to root mean square calculation unit voltage effective value；
Peak peak virtual value computing module, for calculating unit voltage effective value according to peak-to-peak value；
Brownout protection module, for according to root-mean-square value and peak peak virtual value and the comparison knot of brownout protection value
Fruit, judges whether unit carries out brownout protection to unit, wherein, root-mean-square value is the unit voltage according to root mean square calculation
Virtual value, peak peak virtual value are the unit voltage effective value calculated according to peak-to-peak value.
In one embodiment of the invention, brownout protection module is used in the case of the condition that meets one, to machine
Group carries out brownout protection, wherein, condition one is：Root-mean-square value and peak peak virtual value are detected in continuous first scheduled time
Respectively less than it is equal to brownout protection value, wherein first scheduled time is less than the unit starting time.
In one embodiment of the invention, brownout protection module is used for appointing in the condition that meets one and condition two
In the case of one, brownout protection is carried out to unit, wherein, condition two is：Detected in continuous second scheduled time
Root value is less than or equal to brownout protection value, wherein second scheduled time is more than the unit starting time.
In one embodiment of the invention, described device also includes：
Reminding module, after starting to carry out brownout protection to unit in brownout protection module, to outgoing
Prompting message is sent, to prompt user's unit to be in brownout protected mode.
In one embodiment of the invention, brownout protection module is used for during unit starting, unit is not entered
Row brownout is protected；And in unit normal operation, when mains voltage waveform is standard sine wave and supply voltage reduction
In the case of, brownout protection can be carried out according to a pair of units of condition.
In one embodiment of the invention, brownout protection module is used in unit normal operation, when power supply electricity
In the case that corrugating has distortion and supply voltage reduction, brownout protection can be carried out to unit according to condition two.
According to another aspect of the present invention, there is provided a kind of air-conditioner set brownout protection device, including memory, processing
Device and storage are realized on a memory and the computer program that can run on a processor, during the computing device described program
Method and step described in any of the above-described embodiment.
According to another aspect of the present invention, there is provided a kind of air-conditioner set, including the air-conditioning as described in above-mentioned any embodiment
Unit brownout protection device.
The present invention calculates two methods of virtual value and carries out brownout by combining root mean square calculation virtual value and peak-to-peak value
Protection, both ensure that the too low protection of normal voltage in unit running process, and it also avoid reporting brownout in start-up course by mistake
Protection.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of air-conditioner set brownout guard method one embodiment of the present invention.
Fig. 2 is the schematic diagram of air-conditioner set brownout protection device first embodiment of the present invention.
Fig. 3 is the schematic diagram of air-conditioner set brownout protection device second embodiment of the present invention.
Fig. 4 is the schematic diagram of air-conditioner set brownout protection device 3rd embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, is never used as to the present invention and its application or makes
Any restrictions.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
Unless specifically stated otherwise, the part and positioned opposite, the digital table of step otherwise illustrated in these embodiments
Do not limited the scope of the invention up to formula and numerical value.
Simultaneously, it should be appreciated that for the ease of description, the size of the various pieces shown in accompanying drawing is not according to reality
Proportionate relationship draw.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.
Fig. 1 is the schematic diagram of air-conditioner set brownout guard method one embodiment of the present invention.Preferably, the present embodiment
It can be performed by air-conditioner set brownout protection device of the present invention.This method comprises the following steps：
Step 11, according to root mean square calculation unit voltage effective value, wherein, setting root-mean-square value VVirtual value 1For according to square
The unit voltage effective value that root calculates.
In one embodiment of the invention, step 11 can specifically include：Continuous high speed gather a power cycle or
Instantaneous voltage V1, V2 of the several power cycles of person, V3 ..., Vn；These are worth the squared and last evolution that is averaged again, finally
Obtained value is exactly unit voltage effective value.Referring specifically to formula (1).
Step 12, unit voltage effective value is calculated according to peak-to-peak value, wherein, set peak peak virtual value VVirtual value 2For according to peak
The unit voltage effective value of peak computational.
In one embodiment of the invention, step 11 can specifically include：Continuous high speed one power cycle of collection
Instantaneous voltage V1, V2, V3 ..., Vn, take out the minimum value Vin and maximum Vmax in these values；Calculate peak-to-peak value VPP=
Vmax-Vmin；Peak virtual value V in peak is calculated according to formula (2)Virtual value 2。
Step 13, according to root-mean-square value VVirtual value 1With peak peak virtual value VVirtual value 2With brownout protection value Vs comparative result,
Judge whether to carry out brownout protection to unit.
It is found by the applicant that：Calculating voltage effective value typically has a two methods, and one kind is by the use of root-mean-square value as virtual value one
Kind is to calculate virtual value with peak-to-peak value, and when voltage waveform is standard sine wave, the virtual value result that both approaches calculate is
The same.But when voltage waveform produces distortion, then both results can differ larger, because root-mean-square value is closer to authentic and valid
Value, so general make virtual value using root-mean-square value.
Applicant studies air-conditioner set and is starting, running the voltage feature of different phase, proposes air-conditioner set electricity of the present invention
Press through minimum living maintaining method.
The air-conditioner set brownout guard method provided based on the above embodiment of the present invention, can combine root mean square calculation
Virtual value and peak-to-peak value calculate two methods of virtual value and carry out brownout protection, exist so as to solve Large Central Air Conditioning System unit
Due to the reduction of electric current excessive voltage, the technical problem for easily causing brownout to be protected during startup.Thus above-mentioned implementation of the invention
Example, which both ensure that in unit running process, is normally carried out brownout protection, it also avoid reporting brownout in start-up course by mistake
Protection.
In one embodiment of the invention, after starting to carry out brownout protection to unit, methods described may be used also
With including：Prompting message is sent out, to prompt user's unit to be in brownout protected mode.
The above embodiment of the present invention can also be sent out prompting message, to prompt to use after brownout protection is started
Family unit is in brownout protected mode.User's operation is thereby facilitating, improves Consumer's Experience.
Air-conditioner set brownout guard method of the present invention is further described below by specific embodiment.
First specific embodiment
In the first specific embodiment of the present invention, the step 13 of Fig. 1 embodiments can specifically include：
If meeting condition one, brownout protection is carried out to unit, wherein：
Condition one is：Root-mean-square value V is detected in continuous first scheduled time t1Virtual value 1With peak peak virtual value VVirtual value 2It is small
In equal to brownout protection value, wherein first scheduled time t1 is less than the unit starting time.
Unit Voltage Peak peak-fall in start-up course is few, but root-mean-square value drops more；Work as electricity in normal operation
When source voltage reduces, voltage peak-to-peak value and root-mean-square value decline simultaneously.
For this feature, the above embodiment of the present invention is by root-mean-square value VVirtual value 1The virtual value V calculated with peak-to-peak valueVirtual value 2Together
Shi Zuowei brownout conditions.
It can thus be appreciated that according to the above embodiment of the present invention, due to virtual value V that peak-to-peak value calculates during unit startingVirtual value 2
It is larger, therefore brownout protective condition will not be entered；During normal operation, if supply voltage reduces, root-mean-square value and peak
Peak virtual value declines, and can reach brownout protective condition.
Specifically, during unit starting, during unit starting, root-mean-square value VVirtual value 1≤ Vs can be dropped to, and is continued
Time may be more than the t1 seconds；But the virtual value V that peak-to-peak value calculatesVirtual value 2≤ Vs is unsatisfactory for, therefore will not be entered according to condition one
Enter protection.
In unit normal operation, such as power quality preferably (standard sine wave), when the supply voltage decreases, root-mean-square value
VVirtual value 1With peak peak virtual value VVirtual value 2≤ Vs can be dropped to, therefore can an according to condition entrance protection.
Thus the above embodiment of the present invention, which both ensure that in unit running process, is normally carried out brownout protection, also keeps away
Exempt to report brownout protection in start-up course by mistake.
In a specific example of the invention, for a certain particular rack, the first scheduled time t1 is 10 seconds, unit starting
Time is about 10~15 seconds.
Second specific embodiment
In the second specific embodiment of the present invention, the step 13 of Fig. 1 embodiments can specifically include：
If meeting any one of condition one and condition two, brownout protection is carried out to unit, wherein：
Condition one is：Root-mean-square value V is detected in continuous first scheduled time t1Virtual value 1With peak peak virtual value VVirtual value 2It is small
In equal to brownout protection value, wherein first scheduled time t1 is less than the unit starting time.
Condition two is：Root-mean-square value V is detected in continuous second scheduled time t2Virtual value 1Protected less than or equal to brownout
It is worth, wherein second scheduled time t2 is more than the unit starting time.
During unit starting, root-mean-square value VVirtual value 1≤ Vs can be dropped to, and the duration may be more than the t1 seconds；But
The virtual value V that peak-to-peak value calculatesVirtual value 2≤ Vs is unsatisfactory for, therefore will not be entered according to condition one and protected；When continuing due to low-voltage
Between be less than the t2 seconds, therefore will not also be entered according to condition two and protected.Therefore brownout will not be entered in start-up course to protect.
In unit normal operation, as power quality preferably (standard sine wave), when the supply voltage decreases, root-mean-square value with
Peak virtual value in peak can drop to≤Vs, therefore can an according to condition entrance protection.
In unit normal operation, as power quality is bad, (voltage waveform has a distortion, and the virtual value that possible peak-to-peak value calculates is big
In root-mean-square value).When mains voltage waveform has distortion, in the case of due to voltage spikes, peak-to-peak value is larger, therefore according to peak peak
It is worth the virtual value V calculatedVirtual value 2Also can be larger.In this case, when the supply voltage decreases, root-mean-square value VVirtual value 1≤ Vs is dropped to,
And the virtual value V that peak-to-peak value calculatesVirtual value 2≤ Vs is not dropped to, is unsatisfactory for condition one；But it can meet that condition two is protected.
The above embodiment of the present invention both ensure that unit running process power quality preferably or voltage waveform has the feelings of distortion
Brownout protection is normally carried out under condition, it also avoid reporting brownout protection in start-up course by mistake.
In a specific example of the invention, for a certain particular rack, the first scheduled time t1 is 10 seconds, and second is predetermined
Time t2 is 20 seconds, and the unit starting time is about 10~15 seconds.
Fig. 2 is the schematic diagram of air-conditioner set brownout protection device first embodiment of the present invention.It is as shown in Fig. 2 described
Air-conditioner set brownout protection device can include root-mean-square value computing module 21, peak peak virtual value computing module 22 and voltage
Too low protection module 23, wherein：
Root-mean-square value computing module 21, for according to root mean square calculation unit voltage effective value, wherein, set root-mean-square value
VVirtual value 1For the unit voltage effective value according to root mean square calculation.
In one embodiment of the invention, root-mean-square value computing module 21 specifically can be used for continuous high speed collection one
Instantaneous voltage V1, V2 of power cycle or several power cycles, V3 ..., Vn；These values are squared and average last again
Evolution, the value finally obtained are exactly unit voltage effective value.Referring specifically to formula (1).
Peak peak virtual value computing module 22, for calculating unit voltage effective value according to peak-to-peak value, wherein, setting peak peak has
Valid value VVirtual value 2For the unit voltage effective value calculated according to peak-to-peak value.
In one embodiment of the invention, peak peak virtual value computing module 22 specifically can be used for continuous high speed collection one
Instantaneous voltage V1, V2 of individual power cycle, V3 ..., Vn, take out the minimum value Vin and maximum Vmax in these values；Calculate
Peak-to-peak value VPP=Vmax-Vmin；Peak virtual value V in peak is calculated according to formula (2)Virtual value 2。
Brownout protection module 23, for according to brownout protection value Vs and root-mean-square value VVirtual value 1It is effective with peak peak
Value VVirtual value 2Comparative result, judge unit whether to unit carry out brownout protection.
The air-conditioner set brownout protection device provided based on the above embodiment of the present invention, can combine root mean square calculation
Virtual value and peak-to-peak value calculate two methods of virtual value and carry out brownout protection, exist so as to solve Large Central Air Conditioning System unit
Due to the reduction of electric current excessive voltage, the technical problem for easily causing brownout to be protected during startup.Thus above-mentioned implementation of the invention
Example, which both ensure that in unit running process, is normally carried out brownout protection, it also avoid reporting brownout in start-up course by mistake
Protection.
Fig. 3 is the schematic diagram of air-conditioner set brownout protection device second embodiment of the present invention.With embodiment illustrated in fig. 2
Compare, in the embodiment shown in fig. 3, the air-conditioner set brownout protection device can also include reminding module 24：
Reminding module 24, after starting to carry out brownout protection to unit in brownout protection module 23, to
Outer transmission prompting message, to prompt user's unit to be in brownout protected mode.
The above embodiment of the present invention can also be sent out prompting message, to prompt to use after brownout protection is started
Family unit is in brownout protected mode.User's operation is thereby facilitating, improves Consumer's Experience.
Air-conditioner set brownout protection device of the present invention is further described below by specific embodiment.
3rd specific embodiment
In the 3rd specific embodiment of the invention, brownout protection module 23 is specifically used for the situation in the condition that meets one
Under, brownout protection is carried out to unit, wherein, condition one is：Root-mean-square value is detected in continuous first scheduled time t1
VVirtual value 1With peak peak virtual value VVirtual value 2Respectively less than it is equal to brownout protection value Vs, wherein first scheduled time t1 is less than machine
Group starts the time.
Unit Voltage Peak peak-fall in start-up course is few, but root-mean-square value drops more；Work as electricity in normal operation
When source voltage reduces, voltage peak-to-peak value and root-mean-square value decline simultaneously.
For this feature, the above embodiment of the present invention is by root-mean-square value VVirtual value 1The virtual value V calculated with peak-to-peak valueVirtual value 2Together
Shi Zuowei brownout conditions.
It can thus be appreciated that according to the above embodiment of the present invention, due to virtual value V that peak-to-peak value calculates during unit startingVirtual value 2
It is larger, therefore brownout protective condition will not be entered；During normal operation, if supply voltage reduces, root-mean-square value and peak
Peak virtual value declines, and can reach brownout protective condition.
Specifically, during unit starting, during unit starting, root-mean-square value VVirtual value 1≤ Vs can be dropped to, and is continued
Time may be more than the t1 seconds；But the virtual value V that peak-to-peak value calculatesVirtual value 2≤ Vs is unsatisfactory for, therefore will not be entered according to condition one
Enter protection.
In unit normal operation, such as power quality preferably (standard sine wave), when the supply voltage decreases, root-mean-square value
VVirtual value 1With peak peak virtual value VVirtual value 2≤ Vs can be dropped to, therefore can an according to condition entrance protection.
Thus the above embodiment of the present invention, which both ensure that in unit running process, is normally carried out brownout protection, also keeps away
Exempt to report brownout protection in start-up course by mistake.
In a specific example of the invention, for a certain particular rack, the first scheduled time t1 is 10 seconds, unit starting
Time is about 10~15 seconds.
4th specific embodiment
In the 4th specific embodiment of the invention, brownout protection module 23 specifically can be used in the He of the condition that meets one
In the case of any one of condition two, brownout protection is carried out to unit.Its conditional one is：Continuous first scheduled time
Root-mean-square value V is detected in t1Virtual value 1With peak peak virtual value VVirtual value 2Respectively less than it is equal to brownout protection value, wherein described first
Scheduled time t1 is less than the unit starting time；Condition two is：Root-mean-square value V is detected in continuous second scheduled time t2Virtual value 1It is small
In equal to brownout protection value Vs, wherein second scheduled time t2 is more than the unit starting time.
In unit normal operation, as power quality preferably (standard sine wave), when the supply voltage decreases, root-mean-square value with
Peak virtual value in peak can drop to≤Vs, therefore can an according to condition entrance protection.
In unit normal operation, as power quality is bad, (voltage waveform has a distortion, and the virtual value that possible peak-to-peak value calculates is big
In root-mean-square value).When mains voltage waveform has distortion, in the case of due to voltage spikes, peak-to-peak value is larger, therefore according to peak peak
It is worth the virtual value V calculatedVirtual value 2Also can be larger.In this case, when the supply voltage decreases, root-mean-square value VVirtual value 1≤ Vs is dropped to,
And the virtual value V that peak-to-peak value calculatesVirtual value 2≤ Vs is not dropped to, is unsatisfactory for condition one；But it can meet that condition two is protected.
The above embodiment of the present invention both ensure that unit running process power quality preferably or voltage waveform has the feelings of distortion
Brownout protection is normally carried out under condition, it also avoid reporting brownout protection in start-up course by mistake.
In a specific example of the invention, for a certain particular rack, the first scheduled time t1 is 10 seconds, and second is predetermined
Time t2 is 20 seconds, and the unit starting time is about 10~15 seconds.
Fig. 4 is the schematic diagram of air-conditioner set brownout protection device 3rd embodiment of the present invention.It is as shown in figure 4, described
Air-conditioner set brownout protection device can include memory 41, processor 42 and be stored on memory 41 and can handle
The computer program run on device 42, the processor 42 realize the method described in any of the above-described embodiment when performing described program
Step.
The air-conditioner set brownout protection device provided based on the above embodiment of the present invention, can combine root mean square calculation
Virtual value and peak-to-peak value calculate two methods of virtual value and carry out brownout protection, exist so as to solve Large Central Air Conditioning System unit
Due to the reduction of electric current excessive voltage, the technical problem for easily causing brownout to be protected during startup.Thus above-mentioned implementation of the invention
Example, which both ensure that in unit running process, is normally carried out brownout protection, it also avoid reporting brownout in start-up course by mistake
Protection.
According to another aspect of the present invention, there is provided a kind of air-conditioner set, including the air-conditioning as described in above-mentioned any embodiment
Unit brownout protection device.
The air-conditioner set provided based on the above embodiment of the present invention, can combine root mean square calculation virtual value and peak-to-peak value meter
Calculate two methods of virtual value and carry out brownout protection, so as to solve Large Central Air Conditioning System unit on startup due to electric current mistake
The technical problem that big voltage reduces, easily causes brownout to be protected.Thus the above embodiment of the present invention both ensure that unit was transported
Brownout protection is normally carried out during row, it also avoid reporting brownout protection in start-up course by mistake.
Air-conditioner set brownout protection device described above can be implemented as described herein for performing
General processor, programmable logic controller (PLC) (PLC), digital signal processor (DSP), the application specific integrated circuit of function
(ASIC), field programmable gate array (FPGA) either other PLDs, discrete gate or transistor logic,
Discrete hardware components or it is any appropriately combined.
So far, the present invention is described in detail.In order to avoid the design of the masking present invention, it is public that this area institute is not described
Some details known.Those skilled in the art as described above, can be appreciated how to implement technology disclosed herein completely
Scheme.
One of ordinary skill in the art will appreciate that hardware can be passed through by realizing all or part of step of above-described embodiment
To complete, by program the hardware of correlation can also be instructed to complete, described program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only storage, disk or CD etc..
Description of the invention provides for the sake of example and description, and is not exhaustively or by the present invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Select and retouch
State embodiment and be to more preferably illustrate the principle and practical application of the present invention, and one of ordinary skill in the art is managed
The present invention is solved so as to design the various embodiments with various modifications suitable for special-purpose.
Claims (14)
- A kind of 1. air-conditioner set brownout guard method, it is characterised in that including：According to root mean square calculation unit voltage effective value；Unit voltage effective value is calculated according to peak-to-peak value；According to root-mean-square value and peak peak virtual value and the comparative result of brownout protection value, judge whether to carry out voltage to unit Too low protection, wherein, root-mean-square value is the unit voltage effective value according to root mean square calculation, and peak virtual value in peak is according to peak-to-peak value The unit voltage effective value of calculating.
- 2. according to the method for claim 1, it is characterised in that described according to root-mean-square value and peak peak virtual value and voltage mistake The comparative result of minimum living shield value, judges whether unit needs progress brownout protection to include：If meeting condition one, brownout protection is carried out to unit, wherein：Condition one is：Detect that root-mean-square value and peak peak virtual value are respectively less than and are equal to brownout guarantor in continuous first scheduled time Shield value, wherein first scheduled time be less than the unit starting time.
- 3. according to the method for claim 2, it is characterised in that described according to root-mean-square value and peak peak virtual value and voltage mistake The comparative result of minimum living shield value, judges whether unit needs progress brownout protection to include：If meeting any one of condition one and condition two, brownout protection is carried out to unit, wherein：Condition two is：Detect that root-mean-square value is less than or equal to brownout protection value in continuous second scheduled time, wherein described Second scheduled time was more than the unit starting time.
- 4. according to the method any one of claim 1-3, it is characterised in that starting to carry out brownout guarantor to unit After shield, in addition to：Prompting message is sent out, to prompt user's unit to be in brownout protected mode.
- 5. according to the method in claim 2 or 3, it is characterised in that also include：During unit starting, brownout protection is not carried out to unit；, can basis in the case that mains voltage waveform is standard sine wave and supply voltage reduces in unit normal operation A pair of units of condition carry out brownout protection.
- 6. according to the method for claim 3, it is characterised in that also include：, can be according to condition two in the case that mains voltage waveform has distortion and supply voltage reduces in unit normal operation Brownout protection is carried out to unit.
- A kind of 7. air-conditioner set brownout protection device, it is characterised in that including：Root-mean-square value computing module (21), for according to root mean square calculation unit voltage effective value；Peak peak virtual value computing module (22), for calculating unit voltage effective value according to peak-to-peak value；Brownout protection module (23), for according to root-mean-square value and peak peak virtual value and the comparison knot of brownout protection value Fruit, judges whether unit carries out brownout protection to unit, wherein, root-mean-square value is the unit voltage according to root mean square calculation Virtual value, peak peak virtual value are the unit voltage effective value calculated according to peak-to-peak value.
- 8. device according to claim 7, it is characterised in thatBrownout protection module (23) is used in the case of the condition that meets one, and brownout protection is carried out to unit, wherein, Condition one is：Detect that root-mean-square value and peak peak virtual value are respectively less than and are equal to brownout protection in continuous first scheduled time It is worth, wherein first scheduled time is less than the unit starting time.
- 9. device according to claim 8, it is characterised in thatBrownout protection module (23) is used in the case of any one of the condition that meets one and condition two, and unit is carried out Brownout is protected, wherein, condition two is：Detect that root-mean-square value is protected less than or equal to brownout in continuous second scheduled time Shield value, wherein second scheduled time be more than the unit starting time.
- 10. according to the device any one of claim 7-9, it is characterised in that also include：Reminding module (24), after starting to carry out brownout protection to unit in brownout protection module (23), to Outer transmission prompting message, to prompt user's unit to be in brownout protected mode.
- 11. device according to claim 8 or claim 9, it is characterised in thatBrownout protection module (23) is used for during unit starting, does not carry out brownout protection to unit；And in unit , can be according to a pair of machines of condition in the case that mains voltage waveform is standard sine wave and supply voltage reduces in normal operation Group carries out brownout protection.
- 12. device according to claim 9, it is characterised in thatBrownout protection module (23) is used in unit normal operation, when mains voltage waveform has distortion and supply voltage drop In the case of low, brownout protection can be carried out to unit according to condition two.
- 13. a kind of air-conditioner set brownout protection device, including memory (41), processor (42) and it is stored in memory (41) on and the computer program that can be run on processor (42), it is characterised in that the processor (42) performs the journey The method and step any one of claim 1-6 is realized during sequence.
- 14. a kind of air-conditioner set, it is characterised in that including the air-conditioner set voltage mistake as any one of claim 7-13 Minimum living protection unit.
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| CN201710616133.5A CN107355964B (en) | 2017-07-26 | 2017-07-26 | Air conditioning unit and overvoltage protection method and device thereof |
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Cited By (1)
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| CN111473464A (en) * | 2020-04-07 | 2020-07-31 | 海信（广东）空调有限公司 | Air conditioner control method and air conditioner |
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| CN107355964B (en) | 2019-08-20 |
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