CN104748309B - The control method of compressor electric motor, control device in air-conditioner and air-conditioner - Google Patents
The control method of compressor electric motor, control device in air-conditioner and air-conditioner Download PDFInfo
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- CN104748309B CN104748309B CN201510144735.6A CN201510144735A CN104748309B CN 104748309 B CN104748309 B CN 104748309B CN 201510144735 A CN201510144735 A CN 201510144735A CN 104748309 B CN104748309 B CN 104748309B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Control Of Ac Motors In General (AREA)
- Air Conditioning Control Device (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of control method of compressor electric motor in air-conditioner, comprise the following steps：When air-conditioner enters defrost pattern, the peak point current of compressor electric motor is obtained；Peak point current according to compressor electric motor calculates the maximum watt current of compressor electric motor；Judge whether the current active given electric current of compressor electric motor reaches maximum watt current；If it is determined that the current active given electric current of compressor electric motor is not up to maximum watt current, then the current active given electric current to compressor electric motor is compensated, and according to compensation after active given electric current compressor electric motor is controlled to improve the caloric value of compressor electric motor.The control method is by the caloric value that increases the watt current of compressor electric motor to improve compressor electric motor, so as to effectively shorten the defrost time of air-conditioner.The invention also discloses the control device and a kind of air-conditioner of compressor electric motor in a kind of air-conditioner.
Description
Technical field
The present invention relates to air-conditioner technical field, control method, one of compressor electric motor in more particularly to a kind of air-conditioner
Plant the control device and a kind of air-conditioner of compressor electric motor in air-conditioner.
Background technology
In the winter time, when user is heated using air-conditioner, air-conditioner is not heated after running a period of time, and
The phenomenon is in cyclically-varying.Reason is that, when air-conditioner low-temperature heating, outdoor condenser occurs icing phenomenon, in order to
The influence produced to heating effect because outdoor condenser freezes is reduced, most of manufacturer uses air conditioner refrigerating pattern or pass
Closed chamber inner blower pattern is so that outdoor condenser carries out defrost.But, during air-conditioner carries out defrost, interior can be caused
The fluctuation of environment temperature, so as to influence the comfortableness of user.
The content of the invention
The purpose of the present invention is intended at least solve one of above-mentioned technological deficiency.
Therefore, the control method it is an object of the present invention to propose compressor electric motor in a kind of air-conditioner, by increasing
Plus the watt current of compressor electric motor is to improve the caloric value of compressor electric motor, so as to effectively shorten the defrost time of air-conditioner.
It is another object of the present invention to the control device for proposing compressor electric motor in a kind of air-conditioner.It is of the invention again
One purpose is to propose a kind of air-conditioner.
To reach above-mentioned purpose, one aspect of the present invention embodiment proposes a kind of controlling party of compressor electric motor in air-conditioner
Method, comprises the following steps：When the air-conditioner enters defrost pattern, the peak point current of the compressor electric motor is obtained；According to
The peak point current of the compressor electric motor calculates the maximum watt current of the compressor electric motor；Judge the compressor electric motor
Whether current active given electric current reaches the maximum watt current；And if it is determined that the compressor electric motor it is current active
Given electric current is not up to the maximum watt current, then the current active given electric current to the compressor electric motor is compensated,
And according to compensation after active given electric current the compressor electric motor is controlled to improve the heating of the compressor electric motor
Amount.
The control method of compressor electric motor in air-conditioner according to embodiments of the present invention, when air-conditioner enters defrost pattern
When, the peak point current of compressor electric motor is obtained first, and compressor electric motor is calculated most according to the peak point current of compressor electric motor
Big watt current, then judges whether the current active given electric current of compressor electric motor reaches maximum watt current, if it is determined that
The current active given electric current of compressor electric motor is not up to maximum watt current, then to the current active given electricity of compressor electric motor
Stream is compensated, and according to compensation after active given electric current compressor electric motor is controlled to improve the hair of compressor electric motor
Heat.Therefore, the control method of compressor electric motor can be in defrost pattern in air-conditioner in the air-conditioner of the embodiment of the present invention
When improved by increasing the watt current of compressor electric motor stator resistance in compressor electric motor caloric value and compression it is electromechanical
Machine eddy current magnetism can caloric value, so as to improve the overall caloric value of compressor electric motor, and using refrigerant by compressor electric motor from
The heat of body is taken out of, after being absorbed by outdoor condenser and pipeline, is effectively shortened the defrost time of air-conditioner, and then improve
The comfortableness of indoor environment, improves the comfort level of user.Also, the control method is by increasing the active electricity of compressor electric motor
Stream shortens the defrost time of air-conditioner, realizes simply, cost being increased without extra.
According to one embodiment of present invention, the peak point current of the compressor electric motor is active with the compressor electric motor
Relation between electric current is expressed by below equation：
Wherein, IpeakIt is the peak point current of the compressor electric motor, IqIt is the watt current of the compressor electric motor, LdWith
LqIt is the dq axle inductances of the compressor electric motor, P is magnetic pole logarithm, TeIt is the electromagnetic torque of the compressor electric motor, KeFor electronic
Gesture coefficient.
According to one embodiment of present invention, if it is determined that the current active given electric current of the compressor electric motor reaches institute
Maximum watt current is stated, then the compressor electric motor is controlled with the maximum watt current.
According to one embodiment of present invention, according to below equation to the current active given electric current of the compressor electric motor
Compensate：
I'q_ref=Iq_max(t-t0)-Iq_ref
Wherein, Iq_refIt is the current active given electric current of the compressor electric motor, I'q_refIt is active given after for compensation
Electric current, Iq_maxIt is the maximum watt current of the compressor electric motor.
To reach above-mentioned purpose, another aspect of the present invention embodiment proposes a kind of control of compressor electric motor in air-conditioner
Device, including：
Acquisition module, the acquisition module obtains the peak of the compressor electric motor when the air-conditioner enters defrost pattern
Value electric current, and the maximum watt current of the compressor electric motor is calculated according to the peak point current of the compressor electric motor；And control
Molding block, the control module is used to judge whether the current active given electric current of the compressor electric motor reaches the maximum and have
Work(electric current, and when the current active given electric current for judging the compressor electric motor is not up to the maximum watt current to described
The current active given electric current of compressor electric motor is compensated, and according to compensation after active given electric current to the compressor
Motor is controlled to improve the caloric value of the compressor electric motor.
The control device of compressor electric motor in air-conditioner according to embodiments of the present invention, acquisition module is in air-conditioner entranceization
The peak point current of compressor electric motor is obtained during white pattern, and compressor electric motor is calculated most according to the peak point current of compressor electric motor
Big watt current, control module judges whether the current active given electric current of compressor electric motor reaches maximum watt current, and
When judging that the current active given electric current of compressor electric motor is not up to maximum watt current to compressor electric motor it is current active to
Determine electric current to compensate, and according to compensation after active given electric current compressor electric motor is controlled it is electromechanical to improve compression
The caloric value of machine.Therefore, the control device of compressor electric motor is in defrost mould in air-conditioner in the air-conditioner of the embodiment of the present invention
The caloric value and pressure of stator resistance in compressor electric motor can be improved during formula by increasing the watt current of compressor electric motor
The caloric value of the electromechanical machine eddy current magnetism energy of contracting, so as to improve the overall caloric value of compressor electric motor, and utilizes refrigerant by compressor
The heat of motor itself is taken out of, after being absorbed by outdoor condenser and pipeline, is effectively shortened the defrost time of air-conditioner, and then
The comfortableness of indoor environment is improved, the comfort level of user is improve.Also, the control device is by increasing compressor electric motor
Watt current shortens the defrost time of air-conditioner, and cost is increased without extra.
According to one embodiment of present invention, the peak point current of the compressor electric motor is active with the compressor electric motor
Relation between electric current is expressed by below equation：
Wherein, IpeakIt is the peak point current of the compressor electric motor, IqIt is the watt current of the compressor electric motor, LdWith
LqIt is the dq axle inductances of the compressor electric motor, P is magnetic pole logarithm, TeIt is the electromagnetic torque of the compressor electric motor, KeFor electronic
Gesture coefficient.
According to one embodiment of present invention, the control module is judging the current active given of the compressor electric motor
When electric current reaches the maximum watt current, the compressor electric motor is controlled with the maximum watt current.
According to one embodiment of present invention, the control module according to below equation to the current of the compressor electric motor
Active given electric current is compensated：
I'q_ref=Iq_max(t-t0)-Iq_ref
Wherein, Iq_refIt is the current active given electric current of the compressor electric motor, I'q_refIt is active given after for compensation
Electric current, Iq_maxIt is the maximum watt current of the compressor electric motor.
Additionally, embodiments of the invention also proposed a kind of air-conditioner, the control dress that it includes above-mentioned compressor electric motor
Put.
The air-conditioner can improve compressor electric motor in defrost pattern by increasing the watt current of compressor electric motor
The caloric value of caloric value and compressor electric motor the eddy current magnetism energy of middle stator resistance, so as to improve the overall hair of compressor electric motor
Heat, and taken out of the heat of compressor electric motor itself using refrigerant, after being absorbed by outdoor condenser and pipeline, effectively shorten
The defrost time, and then the comfortableness of indoor environment is improved, the comfort level of user is improve, and also without additionally be added to
This.
The additional aspect of the present 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
The above-mentioned and/or additional aspect of the present invention and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and be readily appreciated that, wherein：
Fig. 1 is the flow chart of the control method of compressor electric motor in air-conditioner according to the embodiment of the present invention；
Fig. 2 is the peak point current of the compressor electric motor according to one embodiment of the invention with the active given of compressor electric motor
The change curve of electric current；
Fig. 3 is the compressor electric motor after the active given electric current according to the increase compressor electric motor of one embodiment of the invention
Current waveform figure；
The current waveform figure of compressor electric motor when Fig. 4 is the normal defrost according to one embodiment of the invention；And
Fig. 5 is the block diagram of the control device of compressor electric motor in air-conditioner according to the embodiment of the present invention.
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, is only used for explaining the present invention, and is not construed as limiting the claims.
Following disclosure provides many different embodiments or example is used for realizing different structure of the invention.For letter
Change disclosure of the invention, hereinafter the part and setting to specific examples are described.Certainly, they are only merely illustrative, and
Purpose does not lie in the limitation present invention.Additionally, the present invention can in different examples repeat reference numerals and/or letter.It is this heavy
It is again the relation between itself not indicating discussed various embodiments and/or setting for purposes of simplicity and clarity.This
Outward, the invention provides various specific technique and material example, but those of ordinary skill in the art can be appreciated that
The use of the applicable property and/or other materials of other techniques.In addition, fisrt feature described below second feature it
" on " structure can include that the first and second features be formed as the embodiment of directly contact, it is also possible to including other feature shape
Into the embodiment between the first and second features, such first and second feature may not be directly contact.
In the description of the invention, it is necessary to explanation, unless otherwise prescribed and limit, term " installation ", " connected ",
" connection " should be interpreted broadly, for example, it may be mechanically connect or electrical connection, or two connections of element internal, can
Being to be joined directly together, it is also possible to be indirectly connected to by intermediary, for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term.
With reference to the accompanying drawings come the control method of compressor electric motor in the air-conditioner for describing proposition according to embodiments of the present invention,
The control device of compressor electric motor and the air-conditioner with the control device in air-conditioner.
Fig. 1 is the flow chart of the control method of compressor electric motor in air-conditioner according to the embodiment of the present invention.Such as Fig. 1 institutes
Show, the control method of compressor electric motor is comprised the following steps in the air-conditioner：
S1, when air-conditioner enters defrost pattern, obtains the peak point current of compressor electric motor.
S2, the peak point current according to compressor electric motor calculates the maximum watt current of compressor electric motor.
According to one embodiment of present invention, between the peak point current of compressor electric motor and the watt current of compressor electric motor
Relation expressed by following formula (1)：
Wherein, IpeakIt is the peak point current of compressor electric motor, IqIt is the watt current of compressor electric motor, LdAnd LqIt is compression
The dq axle inductances of electromechanical machine, P is magnetic pole logarithm, TeIt is the electromagnetic torque of compressor electric motor, KeIt is power coefficient.
Specifically, when the maximum watt current of compressor electric motor is calculated, air-conditioner is controlled to enter defrost pattern first, and
Obtain the load torque of compressor electric motor under normal defrost state.When air-conditioner is in steady operational status, compressor electric motor
Load torque it is identical with electromagnetic torque, and the electromagnetic torque of compressor electric motor is essentially identical with given torque.Therefore, compressor
The electromagnetic torque T of motoreCan be approximated to be the given torque T of compressor electric motore *, such as shown in following formula (2)：
Te *=Te (2)
Wherein, for the vector control system of speed outer shroud current inner loop, the given torque T of compressor electric motore *Can be near
Like the output result for speed PI (Proportional Integral, proportional integral) adjuster.Therefore, by simulation software
The given torque T of compressor electric motor can be obtainede *, so as to obtain the electromagnetic torque T of compressor electric motore。
In addition, the electromagnetic torque T of compressor electric motoreIt is indicated with following formula (3)：
Te=1.5PIq[Ke+(Ld-Lq)Id] (3)
Wherein, IdIt is the reactive current of compressor electric motor.
Deformation is carried out to above-mentioned formula (3) can obtain the reactive current I of compressor electric motordIt is indicated with following formula (4)：
In view of compressor electric motor operationally no more than the current limit value of compressor electric motor, therefore, compression is electromechanical
The peak point current I of machinepeakWith the watt current I of compressor electric motorqBetween relation represented with following formula (5)：
Peak point current I is obtained by MATLAB simulation softwarespeakThe watt current I of lower compressor electric motorqMaximum, i.e.,
The maximum watt current I of compressor electric motorq_max。
S3, judges whether the current active given electric current of compressor electric motor reaches maximum watt current.
S4, if it is determined that the current active given electric current of compressor electric motor is not up to maximum watt current, then to compressor
The current active given electric current of motor is compensated, and according to compensation after active given electric current compressor electric motor is controlled
To improve the caloric value of compressor electric motor.
According to one embodiment of present invention, if it is determined that the current active given electric current of compressor electric motor reaches maximum and has
Work(electric current, then be controlled with maximum watt current to compressor electric motor.
According to one embodiment of present invention, according to following formula (6) to the current active given electric current of compressor electric motor
Compensate：
I'q_ref=Iq_max(t-t0)-Iq_ref (6)
Wherein, Iq_refIt is the current active given electric current of compressor electric motor, I'q_refActive given electric current after for compensation,
T is time variable, t0It is initial time, and 0≤t-t0≤ 1, compressor is no more than with the higher limit for ensureing active given electric current
The maximum watt current I of motorq_max, so as to ensure that compressor electric motor can reliablely and stablely run.
Specifically, when compressor electric motor enters defrost pattern, the current active given electricity of compressor electric motor is first determined whether
Stream Iq_refWhether maximum watt current I is reachedq_max, if it is determined that the current active given electric current I of compressor electric motorq_refDo not reach
To maximum watt current Iq_max, then the current active given electric current I to compressor electric motor according to certain rule is neededq_refCarry out
Adjustment, such as according to above-mentioned formula (6) to current watt current Iq_refCompensate, and according to compensation after active given electric current
I'q_refCompressor electric motor is controlled to improve the caloric value of compressor electric motor；If it is determined that the current of compressor electric motor has
The given electric current I of work(q_refReach maximum watt current Iq_max, then without to current active given electric current Iq_refIt is adjusted, and with
Current active given electric current Iq_refCompressor electric motor is controlled.
It is understood that when the active given electric current of compressor electric motor increases, the electric current of compressor electric motor can be corresponding
Increase, now the caloric value of the caloric value of the stator resistance of compressor electric motor and compressor electric motor eddy current magnetism energy also can accordingly increase
Plus, so as to improve the overall caloric value of compressor electric motor, and the heat of compressor electric motor itself is taken out of using refrigerant, by room
After external condenser and pipeline absorb, the defrost time of air-conditioner is effectively shortened.
Further, it is described by taking ASN98D22UEZ compressors as an example, outdoor environment temperature is 2 DEG C, at air-conditioner
In heating mode, and the running frequency of compressor is 90Hz.
When air-conditioner enters defrost pattern and is in steady-working state, compressor electric motor is obtained by simulation software
Electromagnetic torque Te=2.53Nm, and by P=3, Ld-Lq=-0.0035H, Ke=0.108 brings above-mentioned formula (5) into be compressed
The peak point current I of electromechanical machinepeakWith the current active given electric current I of compressor electric motorq_refBetween relation, with following formula
(7) it is indicated：
Then above-mentioned formula (7) is drawn by MATLAB simulation softwares, obtains compressor electric motor as shown in Figure 2
Peak point current IpeakWith the current active given electric current I of compressor electric motorq_refChange curve, and according to obtain compressor
The peak point current I of motorpeak=16A obtains maximum watt current Iq_max。
Compressor electric motor is controlled finally according to active given electric current improve the caloric value of compressor electric motor.Specifically
For, first determine whether whether current active given electric current is maximum watt current, if it is not, then entering according to above-mentioned formula (6)
Row compensation, and according to compensation after active given electric current compressor electric motor is controlled to improve the heating of compressor electric motor
Amount, may finally obtain the current waveform shown in Fig. 3, now the peak point current I of compressor electric motorpeakIt is 13A, compressor electric motor
Peak point current IpeakVirtual value be 7.39A.
Contrasted by with the current waveform not compensated shown in Fig. 4, it is compensated after compressor electric motor
Electric current substantially increase.By monitoring software, now the power consumption increase 135W of compressor electric motor, shows now to compress electromechanics
The caloric value of machine increases such that it is able to effectively shorten the time of air-conditioner defrost.
In sum, in air-conditioner according to embodiments of the present invention compressor electric motor control method, when air-conditioner enter
During defrost pattern, the peak point current of compressor electric motor is obtained first, and compressor is calculated according to the peak point current of compressor electric motor
The maximum watt current of motor, then judges whether the current active given electric current of compressor electric motor reaches maximum watt current,
If it is determined that the current active given electric current of compressor electric motor is not up to maximum watt current, then have to the current of compressor electric motor
The given electric current of work(is compensated, and according to compensation after active given electric current compressor electric motor is controlled to improve compressor
The caloric value of motor.Therefore, the control method of compressor electric motor can be in air-conditioner in the air-conditioner of the embodiment of the present invention
Improved by increasing the watt current of compressor electric motor during defrost pattern stator resistance in compressor electric motor caloric value and
The caloric value of compressor electric motor eddy current magnetism energy, so as to improve the overall caloric value of compressor electric motor, and will be compressed using refrigerant
The electromechanical machine heat of itself is taken out of, after being absorbed by outdoor condenser and pipeline, is effectively shortened the defrost time of air-conditioner, enters
And the comfortableness of indoor environment is improved, improve the comfort level of user.Also, the control method is by increasing compressor electric motor
Watt current shorten defrost time of air-conditioner, realize simple, increase cost without extra.
Fig. 5 is the block diagram of the control device of compressor electric motor in air-conditioner according to the embodiment of the present invention.Such as Fig. 5
Shown, the control device of compressor electric motor includes acquisition module 10 and control module 20 in the air-conditioner.
Wherein, acquisition module 10 obtains the peak point current of compressor electric motor 30, and root when air-conditioner enters defrost pattern
The maximum watt current of compressor electric motor 30 is calculated according to the peak point current of compressor electric motor 30.Control module 20 is used to judge to compress
Whether the current active given electric current of electromechanical machine 30 reaches maximum watt current, and is judging the current active of compressor electric motor 30
Current active given electric current when given electric current is not up to maximum watt current to compressor electric motor 30 is compensated, and according to
Active given electric current after compensation is controlled to improve the caloric value of compressor electric motor 30 to compressor electric motor 30.
According to one embodiment of present invention, the watt current of the peak point current of compressor electric motor 30 and compressor electric motor 30
Between relation expressed by above-mentioned formula (1).
According to one embodiment of present invention, control module 20 is judging the current active given electric current of compressor electric motor 30
When reaching maximum watt current, compressor electric motor 30 is controlled with maximum watt current.
According to one embodiment of present invention, control module 20 according to above-mentioned formula (6) to the current of compressor electric motor 30
Active given electric current is compensated.
Specifically, compressor electric motor 30 enter defrost pattern when, first determine whether compressor electric motor 30 it is current active to
Determine electric current Iq_refWhether maximum watt current I is reachedq_max, if it is determined that the current active given electric current of compressor electric motor 30
Iq_refNot up to maximum watt current Iq_max, then the current active given electricity to compressor electric motor 30 according to certain rule is needed
Stream Iq_refIt is adjusted, such as according to above-mentioned formula (6) to current watt current Iq_refCompensate, and according to compensation after
Active given electric current I'q_refCompressor electric motor 30 is controlled to improve the caloric value of compressor electric motor 30；If it is determined that pressure
The current active given electric current I of the electromechanical machine 30 of contractingq_refReach maximum watt current Iq_max, then without to current active given electricity
Stream Iq_refIt is adjusted, and with current active given electric current Iq_refCompressor electric motor 30 is controlled.
It is understood that when the active given electric current of compressor electric motor 30 increases, the electric current meeting of compressor electric motor 30
Corresponding to increase, now the caloric value of the caloric value of the stator resistance of compressor electric motor 30 and compressor electric motor eddy current magnetism energy also can
It is corresponding to increase, so as to improve the overall caloric value of compressor electric motor 30, and refrigerant is utilized by the heat of itself of compressor electric motor 30
Amount is taken out of, after being absorbed by outdoor condenser and pipeline, effectively shortens the defrost time of air-conditioner.
Further, it is described by taking ASN98D22UEZ compressors as an example, outdoor environment temperature is 2 DEG C, at air-conditioner
In heating mode, and the running frequency of compressor is 90Hz.
When air-conditioner enters defrost pattern and is in steady-working state, acquisition module 10 is pressed by simulation software
The electromagnetic torque T of the electromechanical machine of contractinge=2.53Nm, and by P=3, Ld-Lq=-0.0035H, Ke=0.108 brings above-mentioned formula (5) into
To obtain the peak point current I of compressor electric motor 30peakWith the current active given electric current I of compressor electric motor 30q_refBetween pass
System is represented with above-mentioned formula (7).
Then above-mentioned formula (7) is drawn by MATLAB simulation softwares, obtains compressor electric motor as shown in Figure 2
30 peak point current IpeakWith the current active given electric current I of compressor electric motor 30q_refChange curve, and according to obtain pressure
The peak point current I of the electromechanical machine 30 of contractingpeak=16A obtains maximum watt current Iq_max。
Last control module 20 is controlled to improve compressor electric motor according to active given electric current to compressor electric motor 30
30 caloric value.Specifically, control module 20 judges whether current active given electric current is maximum watt current first, if
Then to be compensated according to above-mentioned formula (6), and according to compensation after active given electric current compressor electric motor 30 is controlled
Make to improve the caloric value of compressor electric motor 30, the current waveform shown in Fig. 3 may finally be obtained, now compressor electric motor 30
Peak point current IpeakIt is 13A, the peak point current I of compressor electric motor 30peakVirtual value be 7.39A.
Contrasted by with the current waveform not compensated shown in Fig. 4, it is compensated after compressor electric motor
30 electric current substantially increases.By monitoring software, now the power consumption increase 135W of compressor electric motor 30, shows now to compress
The caloric value of electromechanical machine 30 increases such that it is able to effectively shorten the time of air-conditioner defrost.
The control device of compressor electric motor in air-conditioner according to embodiments of the present invention, acquisition module is in air-conditioner entranceization
The peak point current of compressor electric motor is obtained during white pattern, and compressor electric motor is calculated most according to the peak point current of compressor electric motor
Big watt current, control module judges whether the current active given electric current of compressor electric motor reaches maximum watt current, and
When judging that the current active given electric current of compressor electric motor is not up to maximum watt current to compressor electric motor it is current active to
Determine electric current to compensate, and according to compensation after active given electric current compressor electric motor is controlled it is electromechanical to improve compression
The caloric value of machine.Therefore, the control device of compressor electric motor is in defrost mould in air-conditioner in the air-conditioner of the embodiment of the present invention
The caloric value and pressure of stator resistance in compressor electric motor can be improved during formula by increasing the watt current of compressor electric motor
The caloric value of the electromechanical machine eddy current magnetism energy of contracting, so as to improve the overall caloric value of compressor electric motor, and utilizes refrigerant by compressor
The heat of motor itself is taken out of, after being absorbed by outdoor condenser and pipeline, is effectively shortened the defrost time of air-conditioner, and then
The comfortableness of indoor environment is improved, the comfort level of user is improve.Also, the control device is by increasing compressor electric motor
Watt current shortens the defrost time of air-conditioner, and cost is increased without extra.
Additionally, embodiments of the invention also proposed a kind of air-conditioner, the control dress that it includes above-mentioned compressor electric motor
Put.
The air-conditioner can improve compressor electric motor in defrost pattern by increasing the watt current of compressor electric motor
The caloric value of caloric value and compressor electric motor the eddy current magnetism energy of middle stator resistance, so as to improve the overall hair of compressor electric motor
Heat, and taken out of the heat of compressor electric motor itself using refrigerant, after being absorbed by outdoor condenser and pipeline, effectively shorten
The defrost time, and then the comfortableness of indoor environment is improved, the comfort level of user is improve, and also without additionally be added to
This.
Any process described otherwise above or method description in flow chart or herein is construed as, and expression includes
It is one or more for realizing specific logical function or process the step of the module of code of executable instruction, fragment or portion
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discussion suitable
Sequence, including function involved by basis by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Represent in flow charts or logic and/or step described otherwise above herein, for example, being considered use
In the order list of the executable instruction for realizing logic function, in 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 system of row system, device or equipment instruction fetch and execute instruction) use, or with reference to these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicate, propagate or pass
The dress that defeated program is used for instruction execution system, device or equipment or with reference to these instruction execution systems, device or equipment
Put.The more specifically example (non-exhaustive list) of computer-readable medium includes following：With the electricity that one or more are connected up
Connecting portion (electronic installation), portable computer diskette box (magnetic device), random access memory (RAM), read-only storage
(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 thereon print described program or other are suitable
Medium, because optical scanner for example can be carried out by paper or other media, then enters edlin, interpretation or if necessary with it
His suitable method is processed electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each several part of the invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In implementation method, the software that multiple steps or method can in memory and by suitable instruction execution system be performed with storage
Or firmware is realized.If for example, realized with hardware, and in another embodiment, can be with well known in the art
Any one of row technology or their combination are realized：With the logic gates for realizing logic function to data-signal
Discrete logic, the application specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method is carried
The rapid hardware that can be by program to instruct correlation is completed, and described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
Additionally, during each functional unit in each embodiment of the invention can be integrated in a processing module, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.The integrated module is such as
Fruit is to realize in the form of software function module and as independent production marketing or when using, it is also possible to which storage is in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..
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.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding can carry out various changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention is by appended claims and its equivalent limits.
Claims (9)
1. in a kind of air-conditioner compressor electric motor control method, it is characterised in that comprise the following steps：
When the air-conditioner enters defrost pattern, the peak point current of the compressor electric motor is obtained；
Peak point current according to the compressor electric motor calculates the maximum watt current of the compressor electric motor；
Judge whether the current active given electric current of the compressor electric motor reaches the maximum watt current；And
If it is determined that the current active given electric current of the compressor electric motor is not up to the maximum watt current, then to the pressure
The current active given electric current of the electromechanical machine of contracting is compensated, and according to compensation after active given electric current to the compressor electric motor
It is controlled to improve the caloric value of the compressor electric motor.
2. the control method of compressor electric motor as claimed in claim 1, it is characterised in that the peak value electricity of the compressor electric motor
Relation between stream and the watt current of the compressor electric motor is expressed by below equation：
Wherein, IpeakIt is the peak point current of the compressor electric motor, IqIt is the watt current of the compressor electric motor, LdAnd LqFor institute
The dq axle inductances of compressor electric motor are stated, P is magnetic pole logarithm, TeIt is the electromagnetic torque of the compressor electric motor, KeIt is electromotive force system
Number.
3. the control method of compressor electric motor as claimed in claim 1, it is characterised in that if it is determined that the compressor electric motor
Current active given electric current reach the maximum watt current, then the compressor electric motor is entered with the maximum watt current
Row control.
4. the control method of compressor electric motor as claimed in claim 1, it is characterised in that according to below equation to the compression
The current active given electric current of electromechanical machine is compensated：
I'q_ref=Iq_max(t-t0)-Iq_ref
Wherein, Iq_refIt is the current active given electric current of the compressor electric motor, I'q_refActive given electric current after for compensation,
Iq_maxIt is the maximum watt current of the compressor electric motor, t is time variable, t0It is initial time.
5. in a kind of air-conditioner compressor electric motor control device, it is characterised in that including：
Acquisition module, the acquisition module obtains the peak value electricity of the compressor electric motor when the air-conditioner enters defrost pattern
Stream, and the maximum watt current of the compressor electric motor is calculated according to the peak point current of the compressor electric motor；And
Control module, the control module is for judging it is described whether the current active given electric current of the compressor electric motor reaches
Maximum watt current, and when the current active given electric current for judging the compressor electric motor is not up to the maximum watt current
Current active given electric current to the compressor electric motor is compensated, and according to compensation after active given electric current to described
Compressor electric motor is controlled to improve the caloric value of the compressor electric motor.
6. the control device of compressor electric motor as claimed in claim 5, it is characterised in that the peak value electricity of the compressor electric motor
Relation between stream and the watt current of the compressor electric motor is expressed by below equation：
Wherein, IpeakIt is the peak point current of the compressor electric motor, IqIt is the watt current of the compressor electric motor, LdAnd LqFor institute
The dq axle inductances of compressor electric motor are stated, P is magnetic pole logarithm, TeIt is the electromagnetic torque of the compressor electric motor, KeIt is electromotive force system
Number.
7. the control device of compressor electric motor as claimed in claim 5, it is characterised in that the control module is judging described
When the current active given electric current of compressor electric motor reaches the maximum watt current, with the maximum watt current to the pressure
The electromechanical machine of contracting is controlled.
8. the control device of compressor electric motor as claimed in claim 5, it is characterised in that the control module is according to following public affairs
Formula is compensated to the current active given electric current of the compressor electric motor：
I'q_ref=Iq_max(t-t0)-Iq_ref
Wherein, Iq_refIt is the current active given electric current of the compressor electric motor, I'q_refActive given electric current after for compensation,
Iq_maxIt is the maximum watt current of the compressor electric motor, t is time variable, t0It is initial time.
9. a kind of air-conditioner, it is characterised in that the control dress including the compressor electric motor as any one of claim 5-8
Put.
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| CN201510144735.6A CN104748309B (en) | 2015-03-30 | 2015-03-30 | The control method of compressor electric motor, control device in air-conditioner and air-conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002039602A (en) * | 2000-07-26 | 2002-02-06 | Daikin Ind Ltd | Air-conditioner |
| JP2004218936A (en) * | 2003-01-15 | 2004-08-05 | Hitachi Ltd | Air conditioner and outdoor unit of air conditioner |
| JP2006138578A (en) * | 2004-11-15 | 2006-06-01 | Matsushita Electric Ind Co Ltd | Air conditioner |
| CN103822327A (en) * | 2013-10-29 | 2014-05-28 | 广东科龙空调器有限公司 | Frequency-conversion air-conditioner electrical heating control method |
| CN104167959A (en) * | 2014-08-25 | 2014-11-26 | 广东美的制冷设备有限公司 | Method and device for determining number of pole pairs |
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2015
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002039602A (en) * | 2000-07-26 | 2002-02-06 | Daikin Ind Ltd | Air-conditioner |
| JP2004218936A (en) * | 2003-01-15 | 2004-08-05 | Hitachi Ltd | Air conditioner and outdoor unit of air conditioner |
| JP2006138578A (en) * | 2004-11-15 | 2006-06-01 | Matsushita Electric Ind Co Ltd | Air conditioner |
| CN103822327A (en) * | 2013-10-29 | 2014-05-28 | 广东科龙空调器有限公司 | Frequency-conversion air-conditioner electrical heating control method |
| CN104167959A (en) * | 2014-08-25 | 2014-11-26 | 广东美的制冷设备有限公司 | Method and device for determining number of pole pairs |
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