CN106762587A - The adjusting method of compressor rotary speed, device and air-conditioner under low temperature - Google Patents
The adjusting method of compressor rotary speed, device and air-conditioner under low temperature Download PDFInfo
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- CN106762587A CN106762587A CN201710010010.7A CN201710010010A CN106762587A CN 106762587 A CN106762587 A CN 106762587A CN 201710010010 A CN201710010010 A CN 201710010010A CN 106762587 A CN106762587 A CN 106762587A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
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- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses the adjusting method of compressor rotary speed, device and air-conditioner under a kind of low temperature, wherein, method is comprised the following steps：Compressor at low temperature heating operation when, respectively detect compressor motor rotor temperature and SPM temperature；Corresponding demagnetization current value is obtained according to the motor rotor temperature of compressor by look-up table, and corresponding maximum output current value is obtained according to the temperature of SPM；The current protection value of compressor is calculated according to demagnetization current value and maximum output current value, and the rotating speed of compressor is adjusted according to current protection value.Thereby, it is possible to realize the purpose of compressor rotating speed operation high at low temperature, and implementation process is simple, low cost, it is easy to promote.
Description
Technical field
The present invention relates to air-conditioner technical field, and in particular to the adjusting method of compressor rotary speed, one kind under a kind of low temperature
The adjusting means of compressor rotary speed and a kind of air-conditioner under low temperature.
Background technology
The motor of compressor is permagnetic synchronous motor in air-conditioner, and the rotor of permagnetic synchronous motor typically uses rare earth material
Material is made.Do not demagnetized, it is necessary to add demagnetization protective current in vector controlled to ensure rotor in the control of compressor.Typically
Demagnetization current is set according to minimum current, is protected if electric current is excessive or does not allow compressor operating in too high
Rotating speed.Thereby, it is possible to effectively protection rotor, demagnetization is prevented.
But, so that compressor characteristics do not make full use of when compressor drum is set according to minimum current.At certain
A little occasions wish that compressor current bigger or rotating speed is higher, if now current limit is too low will influence the characteristic of air-conditioner.
Additionally, IPM (Intelligent Power Module, SPM) is at different temperatures, maximum output
Current value is different.In general, under the high temperature conditions, the maximum output current value of power model will be decreased obviously.And phase
It is the maximum permissible value current protection value of IPM being set under maximum operating temperature so that under common operating mode in the technology of pass
Fan-out capability is very restricted.
The content of the invention
It is contemplated that at least solving one of technical problem in above-mentioned technology to a certain extent.Therefore, of the invention
First purpose is a kind of adjusting method of compressor rotary speed under proposing low temperature.The method can realize compressor at low temperature
The purpose of rotating speed operation high, and implementation process is simple, low cost, it is easy to promote.
Second object of the present invention is the adjusting means of compressor rotary speed under a kind of low temperature of proposition.
Third object of the present invention is to propose a kind of air-conditioner.
To reach above-mentioned purpose, first aspect present invention embodiment proposes a kind of regulation side of compressor rotary speed under low temperature
Method, comprises the following steps：The compressor at low temperature heating operation when, the motor rotor temperature of the compressor is detected respectively
With the temperature of SPM；Corresponding demagnetization current is obtained according to the motor rotor temperature of the compressor by look-up table
Value, and corresponding maximum output current value is obtained according to the temperature of the SPM；According to the demagnetization current value
With the current protection value that the maximum output current value calculates the compressor, and according to the current protection value to the compression
The rotating speed of machine is adjusted.
The adjusting method of compressor rotary speed in a low temperature of the embodiment of the present invention, rotor and intelligent work(according to compressor
The temperature characterisitic of rate module, the current protection value of real-time adjustment compressor, and then according to the current protection value after adjustment to compression
The rotating speed of machine is adjusted, and thereby, it is possible to realize the purpose of compressor rotating speed operation high at low temperature, and implementation process is simple,
Low cost, it is easy to promote.
In addition, the adjusting method of compressor rotary speed can also be with following attached under low temperature according to the above embodiment of the present invention
Plus technical characteristic：
According to one embodiment of present invention, it is described to be calculated according to the demagnetization current value and the maximum output current value
The current protection value of the compressor, including：
The current protection value Imax is calculated by equation below：
Imax=min (| Idemag |, | Iipm |),
Wherein, | Idemag | is the absolute value of the demagnetization current value Idemag, and | Iipm | is the maximum output current
The absolute value of value Iipm.
According to one embodiment of present invention, it is described the rotating speed of the compressor is adjusted according to the current protection value
Section, including：Given rotating speed is updated according to the current protection value, and the compressor is turned according to the given rotating speed after renewal
Speed is adjusted.
Wherein, the sampling interval of the temperature of the motor rotor temperature of the compressor and the SPM be
1ms。
To reach above-mentioned purpose, the embodiment of second aspect present invention proposes a kind of regulation of compressor rotary speed under low temperature
Device, including：Detection module, in the compressor heating operation at low temperature, the compressor and intelligence being detected respectively
The temperature of energy power model；Acquisition module, for obtaining correspondence according to the motor rotor temperature of the compressor by look-up table
Demagnetization current value, and corresponding maximum output current value is obtained according to the temperature of the SPM；Computing module,
Current protection value for calculating the compressor according to the demagnetization current value and the maximum output current value；Regulation mould
Block, for being adjusted to the rotating speed of the compressor according to the current protection value.
The adjusting means of compressor rotary speed in a low temperature of the embodiment of the present invention, rotor and intelligent work(according to compressor
The temperature characterisitic of rate module, the current protection value of real-time adjustment compressor, and then compressor is turned according to the current protection value
Speed is adjusted, and thereby, it is possible to realize the purpose of compressor rotating speed operation high at low temperature, and implementation process is simple, low cost,
It is easy to spread.
In addition, the adjusting means of compressor rotary speed can also be with following attached under low temperature according to the above embodiment of the present invention
Plus technical characteristic：
According to one embodiment of present invention, the computing module, specifically for calculating the electric current by equation below
Protection value Imax：
Imax=min (| Idemag |, | Iipm |),
Wherein, | Idemag | is the absolute value of the demagnetization current value Idemag, and | Iipm | is the maximum output current
The absolute value of value Iipm.
According to one embodiment of present invention, the adjustment module, specifically for：According to the current protection value update to
Determine rotating speed, and the rotating speed of the compressor is adjusted according to the given rotating speed after renewal.
Wherein, the sampling interval of the temperature of the motor rotor temperature of the compressor and the SPM be
1ms。
Further, the present invention proposes a kind of air-conditioner, and it includes compressor rotary speed in a low temperature of above-described embodiment
Adjusting means.
The air-conditioner of the embodiment of the present invention, by the adjusting means of compressor rotary speed under above-mentioned low temperature, can realize compression
The purpose of machine rotating speed operation high at low temperature, and implementation process is simple, low cost, it is easy to promote.
Additional aspect of the invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 be according to embodiments of the present invention in a low temperature of compressor rotary speed adjusting method flow chart；
Fig. 2 is the graph of relation of motor rotor temperature according to embodiments of the present invention and demagnetization current value；And
Fig. 3 be according to embodiments of the present invention in a low temperature of compressor rotary speed adjusting means structured flowchart.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Below with reference to the accompanying drawings the adjusting method of compressor rotary speed, device and air-conditioning in a low temperature of the embodiment of the present invention are described
Device.
Fig. 1 be according to embodiments of the present invention in a low temperature of compressor rotary speed adjusting method flow chart.As shown in figure 1,
The adjusting method of compressor rotary speed is comprised the following steps under the low temperature：
S1, compressor at low temperature heating operation when, respectively detect compressor motor rotor temperature and intelligent power mould
The temperature of block.
In an embodiment of the present invention, compressor and SPM are arranged in air-conditioner, and compressor electricity
Machine rotor is made up of rare earth material.
In one embodiment of the invention, compression can be detected by the temperature sensor being arranged in compressor inner chamber
The motor rotor temperature of machine；Can be detected by the temperature sensor of on SPM (such as IPM chip surfaces)
The temperature of SPM.
Alternatively, the sampling interval of the temperature of the motor rotor temperature of compressor and SPM can be 1ms.
S2, corresponding demagnetization current value is obtained by look-up table according to the motor rotor temperature of compressor, and according to intelligence
The temperature of energy power model obtains corresponding maximum output current value.
, wherein it is desired to explanation, in order that air-conditioner it is normal, it is safe and reliable operation, it is necessary to consider SPM
Maximum bear electric current.
Specifically, as shown in Fig. 2 compressor operating is under heating mode, for the rotor of rare earth material, temperature is got over
Demagnetization current is bigger when low.According to motor rotor temperature, can obtain the corresponding demagnetization current value Idemag by being tabled look-up.Can
To understand, the motor rotor temperature and the corresponding relation of demagnetization current in Fig. 2 can be fabricated to corresponding form, to look into
Look for.
As shown in table 1, according to the temperature of SPM, the maximum of corresponding power model can be obtained by tabling look-up
Output current value Iipm.
Table 1
| The temperature (DEG C) of IPM | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 |
| The maximum output current value (A) of IPM | 30 | 30 | 30 | 30 | 30 | 30 | 25 | 25 | 20 |
S3, the current protection value of compressor is calculated according to demagnetization current value and maximum output current value, and is protected according to electric current
Shield value is adjusted to the rotating speed of compressor.
Specifically, can be by equation below (1) calculating current protection value Imax：
Imax=min (| Idemag |, | Iipm |) (1)
Wherein, | Idemag | is the absolute value of demagnetization current value Idemag, and | Iipm | is maximum output current value Iipm's
Absolute value.
Further, given rotating speed is updated according to current protection value, and according to the given rotating speed after renewal to compressor
Rotating speed is adjusted.
Specifically, the corresponding relation of current protection value and given rotating speed can be pre-set, such as can be pre- in table form
First give, and then corresponding given rotating speed can be obtained according to current protection value, with update that a upper calculating cycle obtains to
Determine rotating speed.
Alternatively, current protection value can be corresponding with a specific given rotating speed value in the form of interval.
If it should be noted that the current protection value being calculated in two neighboring calculating cycle is identical or differs very
Small, corresponding given rotating speed is identical, now need not then update given rotating speed.
It is appreciated that at low temperature, compressor operating when heating mode, the corresponding demagnetization current of motor rotor temperature
Value, and the corresponding maximum output current value of temperature of SPM will all increase, so as to extend the power of air-conditioner
Fan-out capability.
For vector controlled, the given speed of outer shroud, i.e. speed control ring increases, passing ratio integral controller meter
The active given corresponding increase for obtaining.Inner ring, i.e. current regulator will adjust actual current increasing, thereby, it is possible to make sky
Adjusting device effectively to apply to some needs the occasion of high current or lifting rotating speed, and such as winter needs quick dancing room, the gift for heating
Hall homalographic will not prematurely trigger overcurrent protection than larger space.
In an example of the invention, first, it is determined that the running status of air-conditioner, if air-conditioner runs on heats mould
When under formula, regulation rotating speed pattern is opened, can now set a flag bit (such as AddCurrent_flag), and this is indicated
It is set as 1 (i.e. AddCurrent_flag=1).
When mark position 1 is heated, it is arranged on the temperature sensor in compressor chamber body and in IPM modules and enters every 1ms
Row is once sampled, to obtain the temperature of motor rotor temperature and SPM respectively.And can obtain compression by tabling look-up
The demagnetization current value Idemag of the machine and maximum output current value Iipm of SPM.It is appreciated that can be by shown in Fig. 2
Relation between motor rotor temperature and demagnetization current value, and SPM shown in table 1 temperature and intelligent power
Relation between the maximum output current value of module is previously written in corresponding program in a tabular form,
Further, using above-mentioned formula (1) every 1ms calculate first compression machine current protection value Imax, and according to
Current protection value Imax judges whether to need to be updated given rotating speed.If necessary to update, then according to the current protection
Value Imax updates given rotating speed, and the rotating speed of compressor is adjusted according to the given rotating speed after renewal.
Table 2 is contrasted the effect of the inventive method with the effect of correlation technique.As shown in table 2, in correlation technique,
The current protection value of compressor is fixed 15A, and this has very big gap with the maximum demagnetization current value 38A of compressor.And this
The method of invention can make full use of demagnetization current characteristic, and maximum current protection value is lifted to 30A from 15A, and maximum is given
Rotating speed is lifted to 180Hz from 100Hz.
Table 2
| Motor rotor temperature (DEG C) | 20 | 40 | 60 | 80 | 100 |
| Demagnetization current value (A) | 38 | 35 | 32 | 28 | 23 |
| The temperature (DEG C) of IPM | 50 | 60 | 75 | 75 | 80 |
| IPM maximum output currents value (A) | 30 | 30 | 30 | 30 | 25 |
| Current protection value (A) in correlation technique | 15 | 15 | 15 | 15 | 15 |
| Current protection value (A) of the present invention | 30 | 30 | 30 | 28 | 23 |
| Given rotating speed (Hz) in correlation technique | 100 | 100 | 100 | 100 | 100 |
| Given rotating speed (Hz) in the application | 180 | 170 | 165 | 160 | 155 |
The adjusting method of compressor rotary speed in a low temperature of the embodiment of the present invention, rotor and intelligent work(according to compressor
The temperature characterisitic of rate module, the current protection value of real-time adjustment compressor, and given rotating speed is updated according to the current protection value, enter
And the rotating speed of compressor is adjusted according to the given rotating speed after renewal, thereby, it is possible to realize high at low temperature turn of compressor
The purpose of speed operation, and implementation process is simple, low cost, it is easy to promote.
Fig. 3 is the structured flowchart of the adjusting means of compressor rotary speed under low temperature according to an embodiment of the invention.Such as Fig. 3
Shown, the device includes：Detection module 10, acquisition module 20, computing module 30 and adjustment module 40.
Wherein, detection module 10 is used in compressor heating operation at low temperature, and compressor and intelligent work(are detected respectively
The temperature of rate module.Acquisition module 20 is used to obtain corresponding demagnetization electricity according to the motor rotor temperature of compressor by look-up table
Flow valuve, and corresponding maximum output current value is obtained according to the temperature of SPM.Computing module 30 is used for basis and moves back
Magnetoelectricity flow valuve and maximum output current value calculate the current protection value of compressor.Adjustment module 40 is used for according to current protection value pair
The rotating speed of compressor is adjusted.
In an embodiment of the present invention, compressor and SPM are arranged in air-conditioner, and compressor electricity
Machine rotor is made up of rare earth material.
In one embodiment of the invention, compression can be detected by the temperature sensor being arranged in compressor inner chamber
The motor rotor temperature of machine；Can be detected by the temperature sensor of on SPM (such as IPM chip surfaces)
The temperature of SPM.
Alternatively, the sampling interval of the temperature of the motor rotor temperature of compressor and SPM can be 1ms.
As shown in Fig. 2 compressor operating, for the rotor of rare earth material, is moved back under heating mode when temperature is lower
Magnetoelectricity stream is bigger.According to motor rotor temperature, can obtain the corresponding demagnetization current Idemag by being tabled look-up.It is appreciated that
The corresponding relation of motor rotor temperature in Fig. 2 and demagnetization current can be fabricated to corresponding form, to search.
As shown in table 1, according to the temperature of SPM, the maximum of corresponding power model can be obtained by tabling look-up
Output current Iipm.
Table 1
| The temperature (DEG C) of IPM | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 |
| The maximum output current value (A) of IPM | 30 | 30 | 30 | 30 | 30 | 30 | 25 | 25 | 20 |
In one embodiment of the invention, computing module 30 by equation below (1) calculating current specifically for being protected
Value Imax：
Imax=min (| Idemag |, | Iipm |) (1)
Wherein, | Idemag | is the absolute value of demagnetization current value Idemag, and | Iipm | is maximum output current value Iipm's
Absolute value.
Adjustment module 40 specifically for updating given rotating speed according to current protection value, and according to the given rotating speed pair after renewal
The rotating speed of compressor is adjusted.
Specifically, the corresponding relation of current protection value and given rotating speed can be pre-set, such as can be pre- in table form
First give, and then adjustment module 40 can obtain corresponding given rotating speed according to current protection value, and week is calculated to update upper one
The given rotating speed that phase obtains.
Alternatively, current protection value can be corresponding with a specific given rotating speed value in the form of interval.
If it should be noted that the current protection value being calculated in two neighboring calculating cycle is identical or differs very
Small, corresponding given rotating speed is identical, now need not then update given rotating speed.
It is appreciated that at low temperature, compressor operating when heating mode, the corresponding demagnetization current of motor rotor temperature
Value, and the corresponding maximum output current value of temperature of SPM will all increase, so as to extend the power of air-conditioner
Fan-out capability.
For vector controlled, the given speed of outer shroud, i.e. speed control ring increases, passing ratio integral controller meter
The active given corresponding increase for obtaining.Inner ring, i.e. current regulator will adjust actual current increasing, thereby, it is possible to make sky
Adjusting device effectively to apply to some needs the occasion of high current or lifting rotating speed, and such as winter needs quick dancing room, the gift for heating
Hall homalographic will not prematurely trigger overcurrent protection than larger space.
In an example of the invention, first, it is determined that the running status of air-conditioner, if air-conditioner runs on heats mould
When under formula, regulation rotating speed pattern is opened, can now set a flag bit (such as AddCurrent_flag), and this is indicated
It is set as 1 (i.e. AddCurrent_flag=1).
When mark position 1 is heated, it is arranged on the temperature sensor in compressor chamber body and in IPM modules and enters every 1ms
Row is once sampled, to obtain the temperature of motor rotor temperature and SPM respectively.Acquisition module 20 can be with by tabling look-up
Obtain the demagnetization current value Idemag of the compressor and maximum output current value Iipm of SPM.It is appreciated that can be by
The relation between motor rotor temperature and demagnetization current value shown in Fig. 2, and SPM shown in table 1 temperature with
Relation between the maximum output current value of SPM is previously written in corresponding program in a tabular form,
Further, computing module 30 calculates the current protection value of first compression machine using above-mentioned formula (1) every 1ms
Imax, and judge whether to need to be adjusted given rotating speed according to current protection value Imax by adjustment module 40.If
Regulation is needed, then adjustment module 40 updates given rotating speed according to current protection value Imax, and according to the given rotating speed after regulation
Compressor is controlled.
Table 2 is contrasted the effect of apparatus of the present invention with the effect of correlation technique.As shown in table 2, in correlation technique,
The current protection value of compressor is fixed 15A, and this has very big gap with the maximum demagnetization current value 38A of compressor.And this
The method of invention can make full use of demagnetization current characteristic, and maximum current protection value is lifted to 30A from 15A, and maximum is given
Rotating speed is lifted to 180Hz from 100Hz.
Table 2
| Motor rotor temperature (DEG C) | 20 | 40 | 60 | 80 | 100 |
| Demagnetization current value (A) | 38 | 35 | 32 | 28 | 23 |
| The temperature (DEG C) of IPM | 50 | 60 | 75 | 75 | 80 |
| IPM maximum output currents value (A) | 30 | 30 | 30 | 30 | 25 |
| Current protection value (A) in correlation technique | 15 | 15 | 15 | 15 | 15 |
| Current protection value (A) of the present invention | 30 | 30 | 30 | 28 | 23 |
| Given rotating speed (Hz) in correlation technique | 100 | 100 | 100 | 100 | 100 |
| Given rotating speed (Hz) in the application | 180 | 170 | 165 | 160 | 155 |
The adjusting means of compressor rotary speed in a low temperature of the embodiment of the present invention, rotor and intelligent work(according to compressor
The temperature characterisitic of rate module, the current protection value of real-time adjustment compressor, and then given rotating speed is updated according to the current protection value,
And then the rotating speed of compressor is adjusted according to the given rotating speed after renewal, thereby, it is possible to realize that compressor is high at low temperature
The purpose of rotating speed operation, and implementation process is simple, low cost, it is easy to promote.
Further, the present invention proposes a kind of air-conditioner, and it includes compressor in a low temperature of the above embodiment of the present invention
The adjusting means of rotating speed.
The air-conditioner of the embodiment of the present invention, according to the adjusting means of compressor rotary speed under above-mentioned low temperature, can realize compression
The purpose of machine rotating speed operation high at low temperature, and implementation process is simple, low cost, it is easy to promote.
In addition, other of the air-conditioner of the embodiment of the present invention are constituted and acted on for one of ordinary skill in the art
Speech is all known, in order to reduce redundancy, is not repeated herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be any
One or more embodiments or example in combine in an appropriate manner.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, must rather than the device or element for indicating or imply meaning
With specific orientation, with specific azimuth configuration and operation, therefore must be not considered as limiting the invention.
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 at least one this feature.In the description of the invention, " multiple " is meant that at least two, such as two, three
It is individual etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or two interaction relationships of element, unless otherwise clearly restriction.For one of ordinary skill in the art
For, can as the case may be understand above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be with
It is the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, 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 to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (9)
1. under a kind of low temperature compressor rotary speed adjusting method, it is characterised in that comprise the following steps：
The compressor at low temperature heating operation when, the motor rotor temperature and intelligent power mould of the compressor are detected respectively
The temperature of block；
Corresponding demagnetization current value is obtained according to the motor rotor temperature of the compressor by look-up table, and according to the intelligence
The temperature of energy power model obtains corresponding maximum output current value；
The current protection value of the compressor is calculated according to the demagnetization current value and the maximum output current value, and according to institute
Current protection value is stated to be adjusted the rotating speed of the compressor.
2. under low temperature as claimed in claim 1 compressor rotary speed adjusting method, it is characterised in that it is described according to the demagnetization
Current value and the maximum output current value calculate the current protection value of the compressor, including：
The current protection value Imax is calculated by equation below：
Imax=min (| Idemag |, | Iipm |),
Wherein, | Idemag | is the absolute value of the demagnetization current value Idemag, and | Iipm | is the maximum output current value
The absolute value of Iipm.
3. under low temperature as claimed in claim 1 or 2 compressor rotary speed adjusting method, it is characterised in that described in the basis
Current protection value is adjusted to the rotating speed of the compressor, including：
Given rotating speed is updated according to the current protection value, and the rotating speed of the compressor is entered according to the given rotating speed after renewal
Row regulation.
4. under low temperature as claimed in claim 1 compressor rotary speed adjusting method, it is characterised in that the motor of the compressor
The sampling interval of the temperature of temperature of rotor and the SPM is 1ms.
5. under a kind of low temperature compressor rotary speed adjusting means, it is characterised in that including：
Detection module, in the compressor heating operation at low temperature, the rotor of the compressor being detected respectively
The temperature of temperature and SPM；
Acquisition module, for obtaining corresponding demagnetization current value according to the motor rotor temperature of the compressor by look-up table,
And corresponding maximum output current value is obtained according to the temperature of the SPM；
Computing module, the electric current for calculating the compressor according to the demagnetization current value and the maximum output current value is protected
Shield value；
Adjustment module, for being adjusted to the rotating speed of the compressor according to the current protection value.
6. under low temperature as claimed in claim 5 compressor rotary speed adjusting means, it is characterised in that the computing module, tool
Body is used to calculate the current protection value Imax by equation below：
Imax=min (| Idemag |, | Iipm |),
Wherein, | Idemag | is the absolute value of the demagnetization current value Idemag, and | Iipm | is the maximum output current value
The absolute value of Iipm.
7. as described in claim 5 or 6 in a low temperature of compressor rotary speed adjusting means, it is characterised in that the adjustment module,
Specifically for：
Given rotating speed is updated according to the current protection value, and the rotating speed of the compressor is entered according to the given rotating speed after renewal
Row regulation.
8. under low temperature as claimed in claim 5 compressor rotary speed adjusting means, it is characterised in that the motor of the compressor
The sampling interval of the temperature of temperature of rotor and the SPM is 1ms.
9. a kind of air-conditioner, it is characterised in that including compressor rotary speed in a low temperature of as any one of claim 5-8
Adjusting means.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107659066A (en) * | 2017-10-31 | 2018-02-02 | 四川长虹空调有限公司 | A kind of motor module and its control method |
| CN109236622A (en) * | 2018-09-21 | 2019-01-18 | 宁波奥克斯电气股份有限公司 | A kind of compressor frequency control method, device and air conditioner |
| CN109236622B (en) * | 2018-09-21 | 2020-03-13 | 宁波奥克斯电气股份有限公司 | Compressor frequency control method and device and air conditioner |
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| CN112332729A (en) * | 2019-07-30 | 2021-02-05 | 丹佛斯（天津）有限公司 | Compressor and control method thereof |
| US11699969B2 (en) | 2019-07-30 | 2023-07-11 | Danfoss (Tianjin) Ltd. | Compressor and method for controlling the compressor |
| CN112332729B (en) * | 2019-07-30 | 2023-12-26 | 丹佛斯（天津）有限公司 | Compressor and control method thereof |
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