CN114608162B - Method and device for controlling direct current air conditioner and direct current air conditioner - Google Patents
Method and device for controlling direct current air conditioner and direct current air conditioner Download PDFInfo
- Publication number
- CN114608162B CN114608162B CN202210151551.2A CN202210151551A CN114608162B CN 114608162 B CN114608162 B CN 114608162B CN 202210151551 A CN202210151551 A CN 202210151551A CN 114608162 B CN114608162 B CN 114608162B
- Authority
- CN
- China
- Prior art keywords
- condition
- air conditioner
- current air
- direct current
- under
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 56
- 238000010257 thawing Methods 0.000 claims abstract description 75
- 230000003313 weakening effect Effects 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 238000004146 energy storage Methods 0.000 claims abstract description 12
- 230000004907 flux Effects 0.000 claims abstract description 11
- 230000006870 function Effects 0.000 claims description 31
- 230000004913 activation Effects 0.000 claims 1
- 230000009849 deactivation Effects 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 4
- 230000001276 controlling effect Effects 0.000 description 31
- 238000010586 diagram Methods 0.000 description 11
- 238000004891 communication Methods 0.000 description 9
- 230000000875 corresponding effect Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 230000000630 rising effect Effects 0.000 description 7
- 238000011161 development Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- F24F11/46—Improving electric energy efficiency or saving
-
- 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
- F24F11/65—Electronic processing for selecting an operating mode
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application relates to the technical field of intelligent household appliances, and discloses a method for controlling a direct current air conditioner, which comprises the following steps: under the condition of being in a defrosting mode, determining whether an up-conversion limiting condition is met according to the command voltage and the bus voltage of the compressor motor; under the condition that the frequency-raising limiting condition is met, the start and stop of the weak magnetic function are controlled according to indoor personnel information, so that the utilization rate of electric energy in the photovoltaic energy storage system is improved. The running frequency of the compressor required on the premise of ensuring the indoor personnel requirement is determined through the indoor personnel information, and the start-stop flux weakening function is specifically controlled according to the actual situation in the action range of the direct current air conditioner. Under the condition that the direct-current air conditioner executes the defrosting mode, the electric energy in the energy equipment is reasonably utilized, and therefore the applicability of the direct-current air conditioner in different operation scenes is improved. The application also discloses a device for controlling the direct current air conditioner and the direct current air conditioner.
Description
Technical Field
The application relates to the technical field of intelligent household appliances, and for example relates to a method and a device for controlling a direct current air conditioner and the direct current air conditioner.
Background
At present, along with the implementation of 'carbon reaching peak', 'carbon neutralization', new energy development steps into a rapid development period, the green development of energy and the DC development of a power grid, the development of household electricity DC technology is accelerated, and the DC household appliances become a development trend increasingly. However, due to the instability generated by the green power supply, how to adapt to the green power supply with the direct current characteristic and the distributed direct current power grid becomes a problem to be solved.
The related art discloses that in order to ensure the effect of cooling or heating under the condition that the bus voltage reaches the limit of frequency rising, the air conditioner will enter the field weakening control to continue to raise the operating frequency of the compressor.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
under the condition that the direct current air conditioner operates in a defrosting mode, the direct current air conditioner frequently triggers the condition of starting the weak magnetic function due to the fact that the bus voltage is extremely unstable. Therefore, the electric energy in the energy equipment is wasted greatly, and the applicability under different operation scenes is poor.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.
The embodiment of the disclosure provides a method and a device for controlling a direct current air conditioner, and the direct current air conditioner, so that electric energy in energy equipment is reasonably utilized, and applicability under different operation scenes is improved.
In some embodiments, the above method comprises: under the condition of being in a defrosting mode, determining whether an up-conversion limiting condition is met according to the command voltage and the bus voltage of the compressor motor; under the condition that the frequency-raising limiting condition is met, the start and stop of the weak magnetic function are controlled according to indoor personnel information, so that the utilization rate of electric energy in the photovoltaic energy storage system is improved.
In some embodiments, the apparatus comprises: the system comprises a processor and a memory storing program instructions, wherein the processor is configured to execute the method for controlling the direct current air conditioner when the program instructions are executed.
In some embodiments, the dc air conditioner includes: the device for controlling the direct current air conditioner.
The method and the device for controlling the direct current air conditioner and the direct current air conditioner provided by the embodiment of the disclosure can realize the following technical effects:
and determining whether the frequency-increasing limiting condition is met according to the command voltage and the bus voltage of the compressor motor, and controlling the start and stop of the flux weakening function according to the indoor personnel information under the condition that the frequency-increasing limiting condition is met so as to improve the utilization rate of electric energy in the photovoltaic energy storage system. The running frequency of the compressor required on the premise of ensuring the indoor personnel requirement is determined through the indoor personnel information, and the start-stop flux weakening function is specifically controlled according to the actual situation in the action range of the direct current air conditioner. Under the condition that the direct-current air conditioner executes the defrosting mode, the electric energy in the energy equipment is reasonably utilized, and therefore the applicability of the direct-current air conditioner in different operation scenes is improved.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:
FIG. 1 is a schematic diagram of a method for controlling a DC air conditioner according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of another method for controlling a DC air conditioner provided by an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of another method for controlling a DC air conditioner provided by an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of another method for controlling a DC air conditioner provided by an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of another method for controlling a DC air conditioner provided by an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of another method for controlling a DC air conditioner provided by an embodiment of the present disclosure;
fig. 7 is a schematic view of an apparatus for controlling a dc air conditioner according to an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.
The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The term "plurality" means two or more, unless otherwise indicated.
In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.
The term "corresponding" may refer to an association or binding relationship, and the correspondence between a and B refers to an association or binding relationship between a and B.
In the embodiment of the disclosure, the intelligent home appliance refers to a home appliance formed after a microprocessor, a sensor technology and a network communication technology are introduced into the home appliance, and has the characteristics of intelligent control, intelligent sensing and intelligent application, the operation process of the intelligent home appliance often depends on the application and processing of modern technologies such as the internet of things, the internet and an electronic chip, for example, the intelligent home appliance can realize remote control and management of a user on the intelligent home appliance by connecting the electronic appliance.
In the disclosed embodiment, the terminal device refers to an electronic device with a wireless connection function, and the terminal device can be in communication connection with the intelligent household electrical appliance through connecting with the internet, or can be in communication connection with the intelligent household electrical appliance through Bluetooth, wifi and other modes. In some embodiments, the terminal device is, for example, a mobile device, a computer, or an in-vehicle device built into a hover vehicle, etc., or any combination thereof. The mobile device may include, for example, a cell phone, smart home device, wearable device, smart mobile device, virtual reality device, etc., or any combination thereof, wherein the wearable device includes, for example: smart watches, smart bracelets, pedometers, etc.
In the related control technology of the permanent magnet synchronous compressor of the variable frequency air conditioner, the command voltage of the motor is positively correlated with the absolute value of the direct axis voltage and the absolute value of the quadrature axis voltage respectively, but the command voltage cannot be always increased due to the limitation of hardware. When the bus voltage satisfies the frequency-increasing limit condition, if the direct-axis current can be increased in the negative direction in order to continue to expand the operation speed of the motor, the operation speed of the motor can be further increased, thereby expanding the operation speed of the motor. Because the current can generate a magnetic field, the direct-axis current of the negative phase is introduced to generate the magnetic field of the negative phase, which is equivalent to the effect of reducing the counter electromotive force constant of the press, namely weakening the magnetic field, the technology is called field weakening control in the industry.
As shown in fig. 1, an embodiment of the present disclosure provides a method for controlling a dc air conditioner, including:
s01, under the condition of being in a defrosting mode, the direct current air conditioner determines whether an up-conversion limiting condition is met according to the command voltage of the compressor motor and the bus voltage.
And S02, under the condition that the frequency-raising limiting condition is met, the direct current air conditioner controls the start and stop of the weak magnetic function according to the indoor personnel information so as to improve the utilization rate of electric energy in the photovoltaic energy storage system.
By adopting the method for controlling the direct current air conditioner, whether the frequency-increasing limiting condition is met or not can be determined according to the command voltage and the bus voltage of the compressor motor, and under the condition that the frequency-increasing limiting condition is met, the start and stop of the field weakening function are controlled according to the indoor personnel information so as to improve the utilization rate of electric energy in the photovoltaic energy storage system. The running frequency of the compressor required on the premise of guaranteeing the temperature and/or humidity regulation requirements of indoor personnel is determined through the indoor personnel information, and the start-stop flux weakening function is specifically controlled according to the actual situation in the action range of the direct current air conditioner. Under the condition that the direct-current air conditioner executes the defrosting mode, the electric energy in the energy equipment is reasonably utilized, and therefore the applicability of the direct-current air conditioner in different operation scenes is improved.
As shown in connection with fig. 2, an embodiment of the present disclosure provides another method for controlling a dc air conditioner, including:
s01, under the condition of being in a defrosting mode, the direct current air conditioner determines whether an up-conversion limiting condition is met according to the command voltage of the compressor motor and the bus voltage.
S021, under the condition that the frequency-raising limiting condition is met and people exist indoors, the direct current air conditioner obtains the indoor environment temperature.
S022, the direct current air conditioner controls the start and stop of the weak magnetic function according to the indoor environment temperature.
By adopting the method for controlling the direct current air conditioner, which is provided by the embodiment of the disclosure, the applicability of the direct current air conditioner in different operation scenes can be improved. Under the condition that the frequency-raising limiting condition is met and people exist indoors, the direct current air conditioner judges the current temperature-regulating requirement according to the indoor environment temperature. Judging whether the operation frequency of the compressor needs to be further improved according to the temperature regulation requirement. Under the condition that the operation frequency of the compressor needs to be further improved, the direct current air conditioner starts the weak magnetic function to further improve the operation frequency of the compressor, and then the temperature adjustment and defrosting processes are assisted.
Optionally, the direct current air conditioner controls start and stop of the weak magnetic function according to indoor environment temperature, including: under the condition that the indoor environment temperature meets the preset condition, the direct current air conditioner controls the compressor to run in a frequency-reducing mode; under the condition that the indoor environment temperature does not meet the preset condition, the direct current air conditioner starts the field weakening function.
Therefore, the applicability of the direct-current air conditioner in different operation scenes can be better improved. Under the condition that the indoor environment temperature meets the preset condition, the running frequency of the current compressor is considered to not only meet the temperature regulation requirement of a user, but also have certain over-frequency, so that the compressor is controlled to run in a frequency-reducing mode. Under the condition that the indoor environment temperature does not meet the preset condition, the running frequency of the current compressor is considered to be insufficient to meet the temperature regulation requirement of a user, so that the direct current air conditioner starts the field weakening function.
As shown in connection with fig. 3, an embodiment of the present disclosure provides another method for controlling a dc air conditioner, including:
s01, under the condition of being in a defrosting mode, the direct current air conditioner determines whether an up-conversion limiting condition is met according to the command voltage of the compressor motor and the bus voltage.
S023, under the condition that the frequency-raising limiting condition is met and no one exists indoors, the direct current air conditioner controls the compressor to perform frequency-lowering operation until the exiting condition is met.
S024, under the condition that the exit condition is met, the direct current air conditioner stops operating the defrosting mode and operates according to the operation parameters before the defrosting mode is operated.
By adopting the method for controlling the direct current air conditioner, which is provided by the embodiment of the disclosure, the accuracy of the start-stop flux weakening control of the direct current air conditioner can be improved. Under the condition that the frequency-raising limiting condition is met but no one exists indoors, the priority of temperature regulation is lower, and efficient defrosting is not needed at this time so as to avoid influencing the temperature regulation. At this time, the direct current air conditioner controls the compressor to run down until the exit condition is satisfied. For example, if the current indoor ambient temperature is less than the comfort temperature (28 ℃, 26 ℃ or 24 ℃ for heating), the ambient temperature at that time is considered to be insufficient for the user to control the compressor to enter the flux weakening function, so that the operating frequency of the compressor continues to rise during defrosting. After the operation frequency of the compressor is increased, the power grid is automatically connected to provide electric energy under the condition that the residual electric quantity of the energy storage device is insufficient to support the use requirement. If the current indoor environment temperature is greater than or equal to the comfort temperature, the environment temperature at the moment is considered to be capable of meeting the user requirement, so that the flux weakening control is not required to be started. Therefore, the compressor is subjected to the frequency-reducing control based on the original defrosting operation frequency, for example, the operation frequency of the original compressor is reduced by Ahz and then the operation is performed, or the operation frequency of the original compressor is reduced by B%. Wherein the exit condition includes the temperature of the outdoor heat exchanger being greater than the first set temperature throughout the continuous first set period of time. Or the temperature of the outdoor heat exchanger is always larger than the second set temperature in the continuous second set time period. Or, the continuous operation time period of the outdoor heat exchanger is longer than or equal to the third set time period. The second set time length is smaller than the first set time length and smaller than the third set time length, and the second set temperature is larger than the first set temperature.
Optionally, the determining whether the frequency-increasing limiting condition is met by the direct current air conditioner according to the command voltage and the bus voltage of the compressor motor includes: the direct current air conditioner calculates the voltage ratio of the effective value of the command voltage of the compressor motor to the bus voltage; and determining whether the direct current air conditioner meets the frequency-up limiting condition according to the voltage ratio.
Therefore, the accuracy of the start-stop flux weakening control of the direct-current air conditioner can be better improved. The voltage ratio of the command voltage to the bus voltage of the motor can represent the extent of the current command voltage from the hardware limit. Therefore, whether the compressor can continue to raise the frequency can be judged through the voltage ratio, and corresponding operation is executed according to the judging result, so that the accuracy of entering the field weakening control is improved.
Optionally, the determining whether the frequency-up limiting condition is met by the direct current air conditioner according to the voltage ratio includes: under the condition that the voltage ratio is greater than or equal to the ratio threshold, the direct current air conditioner determines that the frequency-increasing limiting condition is met; and under the condition that the voltage ratio is smaller than the ratio threshold, the direct current air conditioner determines that the frequency-up limiting condition is not met.
Thus, the time for starting and stopping the flux weakening control can be better determined. And under the condition that the voltage ratio is larger than or equal to the ratio threshold value, the air conditioner shows that the effective value of the command voltage is far larger than the bus voltage at the moment, the frequency rising of the compressor has almost no margin, and the frequency rising limiting condition is determined to be met. And under the condition that the voltage ratio is smaller than the ratio threshold value, the effective value of the command voltage is far smaller than the bus voltage, and the compressor has a margin in frequency rising, so that the frequency rising limiting condition is determined not to be met.
As shown in connection with fig. 4, an embodiment of the present disclosure provides another method for controlling a dc air conditioner, including:
s031, the direct current air conditioner obtains the defrosting temperature detected by the defrosting sensor.
S032, under the condition that the defrosting temperature is less than or equal to the frost point temperature, the direct current air conditioner obtains continuous time.
S033, when the continuous time length is greater than or equal to the first preset time length, the direct current air conditioner starts a defrosting mode.
S01, under the condition of being in a defrosting mode, the direct current air conditioner determines whether an up-conversion limiting condition is met according to the command voltage of the compressor motor and the bus voltage.
And S02, under the condition that the frequency-raising limiting condition is met, the direct current air conditioner controls the start and stop of the weak magnetic function according to the indoor personnel information so as to improve the utilization rate of electric energy in the photovoltaic energy storage system.
By adopting the method for controlling the direct current air conditioner, which is provided by the embodiment of the invention, the accuracy of starting the defrosting mode of the direct current air conditioner can be ensured. And under the condition that the defrosting temperature is less than or equal to the frost point temperature, judging the continuous duration of the operation of the direct current air conditioner with the defrosting temperature continuously less than or equal to the frost point temperature. And under the condition that the continuous time length is greater than or equal to the first preset time length, the direct current air conditioner starts a defrosting mode. The situation that the defrosting mode is started by mistake caused by taking the defrosting temperature as a judging parameter is avoided, and further, the defect of insufficient accuracy of starting the defrosting mode of the direct-current air conditioner is caused, so that the utilization rate of stored electric energy in the energy storage system is poor. For example, a defrosting temperature detected by a defrosting sensor and an outdoor environment temperature detected by an outdoor ambient temperature sensor, and calculate a corresponding frost point temperature. In the case where the defrosting temperature is always satisfied to be less than or equal to the frost point temperature within 2 minutes continuously, it is considered that the direct current air conditioner satisfies the condition of turning on the defrosting mode, so the defrosting mode is turned on.
As shown in conjunction with fig. 5, an embodiment of the present disclosure provides another method for controlling a dc air conditioner, including:
s041, the direct current air conditioner obtains the accumulated running time of the compressor.
S042, under the condition that the accumulated running time length is greater than or equal to a first time length threshold value, the direct current air conditioner acquires the defrosting temperature detected by the defrosting sensor.
S043, when the defrosting temperature is continuously less than or equal to the preset temperature and the duration is longer than the second preset duration, the direct current air conditioner starts a defrosting mode.
S044, when the accumulated running time length is greater than or equal to a second time length threshold value, the direct current air conditioner starts a defrosting mode.
S01, under the condition of being in a defrosting mode, the direct current air conditioner determines whether an up-conversion limiting condition is met according to the command voltage of the compressor motor and the bus voltage.
And S02, under the condition that the frequency-raising limiting condition is met, the direct current air conditioner controls the start and stop of the weak magnetic function according to the indoor personnel information so as to improve the utilization rate of electric energy in the photovoltaic energy storage system.
By adopting the method for controlling the direct current air conditioner, which is provided by the embodiment of the invention, the accuracy of starting the defrosting mode of the direct current air conditioner can be ensured. Under the condition that the accumulated running time length is greater than or equal to a first time length threshold value, the direct current air conditioner acquires the defrosting temperature detected by the defrosting sensor. And under the condition that the defrosting temperature is less than or equal to the frost point temperature, judging the continuous duration of the operation of the direct current air conditioner with the defrosting temperature continuously less than or equal to the frost point temperature. And under the condition that the continuous time length is greater than or equal to the first preset time length, the direct current air conditioner starts a defrosting mode. And under the condition that the accumulated running time length is greater than or equal to the second time length threshold value, determining that the running time length of the compressor reaches the condition of defrosting, and starting a defrosting mode of the direct current air conditioner. For example, after detecting that the compressor is running for a first period of time in an accumulated manner, if the defrost temperature is less than a first preset temperature (the size of which can be adjusted according to the outdoor ambient temperature and the user-set temperature) and for 2 minutes, the dc air conditioner starts the defrost mode. After detecting the second time period of the accumulated operation of the compressor, the direct current air conditioner starts a defrosting mode. And the situation that the defrosting mode is started by mistake due to the deviation of a single detection parameter is avoided.
As shown in connection with fig. 6, an embodiment of the present disclosure provides another method for controlling a dc air conditioner, including:
s200, running a heating mode of the direct current air conditioner.
S210, the direct current air conditioner acquires defrosting parameters.
S220, the direct current air conditioner judges whether the defrosting parameters meet the defrosting conditions. If yes, go to step S230; if not, return to step S200.
S230, the direct current air conditioner obtains command voltage and bus voltage of the compressor motor.
S240, the direct current air conditioner judges whether the command voltage and the bus voltage meet the frequency raising condition. If yes, go to step S241; if not, step S242 is performed.
S241, the direct current air conditioner acquires indoor personnel information.
S242, the direct current air conditioner operates in a defrosting mode.
S250, the direct current air conditioner judges whether a person exists indoors. If yes, go to step S251; if not, step S252 is performed.
S251, the direct current air conditioner acquires the indoor environment temperature.
S252, the direct current air conditioner operates in a defrosting mode and reduces the operation frequency of the compressor.
S260, the direct current air conditioner judges whether the indoor environment temperature is less than or equal to a temperature threshold value. If yes, go to step S261; if not, step S252 is performed.
S261, the direct current air conditioner starts the weak magnetic function to assist defrosting.
By adopting the method for controlling the direct current air conditioner, provided by the embodiment of the invention, the electric energy in the energy equipment can be reasonably utilized under the condition that the direct current air conditioner executes the defrosting mode, so that the applicability of the direct current air conditioner under different operation scenes is improved. Under the condition that the direct current air conditioner meets the defrosting condition and then operates in a defrosting mode, the command voltage and the bus voltage of the compressor motor are obtained. When the ratio of the command voltage and the bus voltage of the direct current air conditioner is higher than a required value, the energy provided by the energy storage equipment cannot meet the requirement of continuous frequency rising. In order to fully utilize the electric energy in the energy storage device, specific judgment is carried out according to the actual condition in the action range of each direct current air conditioner before the weak magnetic frequency rising is carried out. When the ratio is detected to be lower than the required value, the direct current air conditioner operates in a normal defrosting mode. When the ratio is detected to be higher than a required value, if the priority of temperature adjustment is lower at the moment when no indoor people exist, efficient defrosting is not needed at the moment to avoid influencing the temperature adjustment, the direct current air conditioner operates in a defrosting mode, and the operating frequency of the compressor is reduced. If someone is in the room at this time, the priority of temperature adjustment is higher, and the operation frequency of the compressor should be increased. To avoid inaccuracy of a single parameter, the DC air conditioner acquires the indoor environment temperature. In case the indoor ambient temperature is greater than the temperature threshold, the priority of indoor tempering is lower. Therefore, the defrosting process does not affect the use experience of indoor personnel, so that the direct current air conditioner operates in a defrosting mode and reduces the operation frequency of the compressor. In case the indoor ambient temperature is less than or equal to the temperature threshold, the priority of indoor tempering is higher. At this time, the compressor is required to raise the operation frequency to defrost rapidly to avoid affecting the subsequent temperature adjustment efficiency, so that the direct current air conditioner starts the weak magnetic function to assist the defrosting and temperature adjustment modes.
As shown in connection with fig. 7, an embodiment of the present disclosure provides an apparatus for controlling a direct current air conditioner, including a processor (processor) 100 and a memory (memory) 101. Optionally, the apparatus may further comprise a communication interface (Communication Interface) 102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other via the bus 103. The communication interface 102 may be used for information transfer. The processor 100 may call logic instructions in the memory 101 to perform the method for controlling a dc air conditioner of the above-described embodiment.
Further, the logic instructions in the memory 101 described above may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand alone product.
The memory 101 is a computer readable storage medium that can be used to store a software program, a computer executable program, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes functional applications and data processing by executing program instructions/modules stored in the memory 101, i.e., implements the method for controlling a dc air conditioner in the above-described embodiment.
The memory 101 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for a function; the storage data area may store data created according to the use of the terminal device, etc. Further, the memory 101 may include a high-speed random access memory, and may also include a nonvolatile memory.
The embodiment of the disclosure provides a direct current air conditioner, which comprises the device for controlling the direct current air conditioner.
The disclosed embodiments provide a storage medium storing computer executable instructions configured to perform the above-described method for controlling a direct current air conditioner.
The storage medium may be a transitory storage medium or a non-transitory storage medium.
Embodiments of the present disclosure may be embodied in a software product stored on a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of a method according to embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium including: a plurality of media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or a transitory storage medium.
The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may involve structural, logical, electrical, process, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. Moreover, the terminology used in the present application is for the purpose of describing embodiments only and is not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a," "an," and "the" (the) are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, when used in this application, the terms "comprises," "comprising," and/or "includes," and variations thereof, mean that the stated features, integers, steps, operations, elements, and/or components are present, but that the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof is not precluded. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method or apparatus comprising such elements. In this context, each embodiment may be described with emphasis on the differences from the other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method sections disclosed in the embodiments, the description of the method sections may be referred to for relevance.
Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. The skilled artisan may use different methods for each particular application to achieve the described functionality, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the embodiments disclosed herein, the disclosed methods, articles of manufacture (including but not limited to devices, apparatuses, etc.) may be practiced in other ways. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the units may be merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form. The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to implement the present embodiment. In addition, each functional unit in the embodiments of the present disclosure may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than that disclosed in the description, and sometimes no specific order exists between different operations or steps. For example, two consecutive operations or steps may actually be performed substantially in parallel, they may sometimes be performed in reverse order, which may be dependent on the functions involved. Each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (7)
1. A method for controlling a direct current air conditioner, comprising:
under the condition of being in a defrosting mode, determining whether an up-conversion limiting condition is met according to the command voltage and the bus voltage of the compressor motor;
under the condition that the frequency-raising limiting condition is met, controlling the start and stop of the weak magnetic function according to indoor personnel information so as to improve the utilization rate of electric energy in the photovoltaic energy storage system;
the method for determining whether the frequency-increasing limiting condition is met according to the command voltage and the bus voltage of the compressor motor comprises the following steps: calculating the voltage ratio of the effective value of the command voltage of the compressor motor to the bus voltage; determining whether the up-conversion limiting condition is met according to the voltage ratio;
the step of determining whether the up-conversion limiting condition is satisfied according to the voltage ratio includes: determining that the up-conversion limiting condition is met under the condition that the voltage ratio is greater than or equal to a ratio threshold; determining that the frequency-up limiting condition is not met under the condition that the voltage ratio is smaller than the ratio threshold;
according to indoor personnel information, control the start and stop of field weakening function includes: under the condition that people exist indoors, acquiring indoor environment temperature; controlling the start and stop of the weak magnetic function according to the indoor environment temperature;
the method for controlling the start and stop of the flux weakening function according to the indoor environment temperature comprises the following steps: under the condition that the indoor environment temperature does not meet the preset condition, starting the weak magnetic function; and under the indoor unmanned condition, controlling the down-conversion operation of the compressor until the exit condition is met.
2. The method of claim 1, wherein controlling the activation and deactivation of the flux weakening function based on the indoor ambient temperature further comprises:
and controlling the down-conversion operation of the compressor under the condition that the indoor environment temperature meets the preset condition.
3. The method of claim 1, wherein in the absence of an indoor person, further comprising:
and under the condition that the exit condition is met, stopping the operation of the defrosting mode and operating according to the operation parameters before the operation of the defrosting mode.
4. A method according to any one of claims 1 to 3, further comprising, prior to operating the defrost mode:
acquiring a defrosting temperature detected by a defrosting sensor;
acquiring continuous time length under the condition that the defrosting temperature is less than or equal to the frost point temperature;
and under the condition that the continuous time length is greater than or equal to the first preset time length, starting a defrosting mode.
5. A method according to any one of claims 1 to 3, further comprising, prior to operating the defrost mode:
acquiring the accumulated operation time of the compressor;
acquiring a defrosting temperature detected by a defrosting sensor under the condition that the accumulated running time is greater than or equal to a first time threshold;
when the defrosting temperature is continuously less than or equal to the preset temperature for a period of time longer than a second preset period of time, starting a defrosting mode;
and under the condition that the accumulated running time length is greater than or equal to a second time length threshold value, starting a defrosting mode.
6. An apparatus for controlling a direct current air conditioner comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for controlling a direct current air conditioner according to any one of claims 1 to 5 when the program instructions are executed.
7. A direct current air conditioner comprising the apparatus for controlling a direct current air conditioner according to claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210151551.2A CN114608162B (en) | 2022-02-18 | 2022-02-18 | Method and device for controlling direct current air conditioner and direct current air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210151551.2A CN114608162B (en) | 2022-02-18 | 2022-02-18 | Method and device for controlling direct current air conditioner and direct current air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114608162A CN114608162A (en) | 2022-06-10 |
| CN114608162B true CN114608162B (en) | 2024-03-22 |
Family
ID=81859320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210151551.2A Active CN114608162B (en) | 2022-02-18 | 2022-02-18 | Method and device for controlling direct current air conditioner and direct current air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114608162B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000227074A (en) * | 1999-02-04 | 2000-08-15 | Matsushita Electric Ind Co Ltd | Drive control method and device for compressor |
| JP2014124042A (en) * | 2012-12-21 | 2014-07-03 | Hitachi Appliances Inc | Motor control device and air conditioner |
| CN104214886A (en) * | 2013-05-30 | 2014-12-17 | 广东美的制冷设备有限公司 | Control method for variable frequency air conditioner |
| CN107388661A (en) * | 2017-07-27 | 2017-11-24 | 广东美的制冷设备有限公司 | Solar air-conditioner system and its Poewr control method and device |
| CN107449099A (en) * | 2017-06-20 | 2017-12-08 | 青岛海尔空调器有限总公司 | The control method and control device of air-conditioning |
| WO2018094912A1 (en) * | 2016-11-25 | 2018-05-31 | 广东美的制冷设备有限公司 | Control method for compressor, apparatus and household appliance |
| CN108534320A (en) * | 2018-03-29 | 2018-09-14 | 广东美的制冷设备有限公司 | Air conditioner cooling activation control method, air conditioner and storage medium |
| CN109059192A (en) * | 2018-06-20 | 2018-12-21 | 广东美的制冷设备有限公司 | The control method and device of compressor winding heating |
| WO2019021450A1 (en) * | 2017-07-28 | 2019-01-31 | 三菱電機株式会社 | Air conditioner, air conditioning system, and method for controlling air conditioner |
| CN110469958A (en) * | 2019-07-16 | 2019-11-19 | 青岛海尔空调器有限总公司 | Air-conditioner control method, device, computer equipment and storage medium |
| CN110572098A (en) * | 2019-09-19 | 2019-12-13 | 四川虹美智能科技有限公司 | Flux weakening control method for permanent magnet synchronous motor |
| CN110701828A (en) * | 2019-10-21 | 2020-01-17 | 广东美的暖通设备有限公司 | Control method and system of compressor, compressor assembly, air conditioner and storage medium |
| JP2020039252A (en) * | 2019-11-26 | 2020-03-12 | 三菱電機株式会社 | Drive device, air conditioner and method of driving electric motor |
| CN112524854A (en) * | 2020-12-09 | 2021-03-19 | 青岛海尔空调器有限总公司 | Control method of compressor in variable frequency air conditioner and variable frequency air conditioner |
| WO2021244669A1 (en) * | 2020-06-05 | 2021-12-09 | 浙江鲲悟科技有限公司 | Compressor variable-frequency speed adjusting system and control method for direct-current bus voltage |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2501033B1 (en) * | 2011-03-15 | 2018-02-14 | Johnson Controls Technology Company | Control systems and methods for electronically commutated motors |
-
2022
- 2022-02-18 CN CN202210151551.2A patent/CN114608162B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000227074A (en) * | 1999-02-04 | 2000-08-15 | Matsushita Electric Ind Co Ltd | Drive control method and device for compressor |
| JP2014124042A (en) * | 2012-12-21 | 2014-07-03 | Hitachi Appliances Inc | Motor control device and air conditioner |
| CN104214886A (en) * | 2013-05-30 | 2014-12-17 | 广东美的制冷设备有限公司 | Control method for variable frequency air conditioner |
| WO2018094912A1 (en) * | 2016-11-25 | 2018-05-31 | 广东美的制冷设备有限公司 | Control method for compressor, apparatus and household appliance |
| CN107449099A (en) * | 2017-06-20 | 2017-12-08 | 青岛海尔空调器有限总公司 | The control method and control device of air-conditioning |
| CN107388661A (en) * | 2017-07-27 | 2017-11-24 | 广东美的制冷设备有限公司 | Solar air-conditioner system and its Poewr control method and device |
| WO2019021450A1 (en) * | 2017-07-28 | 2019-01-31 | 三菱電機株式会社 | Air conditioner, air conditioning system, and method for controlling air conditioner |
| CN108534320A (en) * | 2018-03-29 | 2018-09-14 | 广东美的制冷设备有限公司 | Air conditioner cooling activation control method, air conditioner and storage medium |
| CN109059192A (en) * | 2018-06-20 | 2018-12-21 | 广东美的制冷设备有限公司 | The control method and device of compressor winding heating |
| CN110469958A (en) * | 2019-07-16 | 2019-11-19 | 青岛海尔空调器有限总公司 | Air-conditioner control method, device, computer equipment and storage medium |
| CN110572098A (en) * | 2019-09-19 | 2019-12-13 | 四川虹美智能科技有限公司 | Flux weakening control method for permanent magnet synchronous motor |
| CN110701828A (en) * | 2019-10-21 | 2020-01-17 | 广东美的暖通设备有限公司 | Control method and system of compressor, compressor assembly, air conditioner and storage medium |
| JP2020039252A (en) * | 2019-11-26 | 2020-03-12 | 三菱電機株式会社 | Drive device, air conditioner and method of driving electric motor |
| WO2021244669A1 (en) * | 2020-06-05 | 2021-12-09 | 浙江鲲悟科技有限公司 | Compressor variable-frequency speed adjusting system and control method for direct-current bus voltage |
| CN112524854A (en) * | 2020-12-09 | 2021-03-19 | 青岛海尔空调器有限总公司 | Control method of compressor in variable frequency air conditioner and variable frequency air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114608162A (en) | 2022-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114608158B (en) | Method and device for controlling direct-current air conditioner and air conditioner | |
| CN114704934B (en) | Method and device for controlling direct current air conditioner and direct current air conditioner | |
| CN114216216B (en) | Control method and device for air conditioner operation | |
| CN111964234A (en) | Method and device for controlling air conditioner compressor and air conditioner | |
| CN113418289B (en) | Control method and device for preventing cold air of air conditioner and air conditioner | |
| CN113251640B (en) | Control method and device for air conditioner compressor and air conditioner | |
| CN114704936B (en) | Method and device for controlling direct current air conditioner and direct current air conditioner | |
| CN114234396A (en) | Method and device for controlling air conditioner and air conditioner | |
| CN114608162B (en) | Method and device for controlling direct current air conditioner and direct current air conditioner | |
| CN113251644A (en) | Method and device for dehumidifying air conditioner and air conditioner | |
| CN111412633B (en) | Air conditioner control method and device, storage medium and air conditioner | |
| CN114811880B (en) | Method and device for defrosting direct-current air conditioner and direct-current air conditioner | |
| CN114234415A (en) | Method and device for controlling air conditioner, air conditioner and storage medium | |
| CN114704933B (en) | Method and device for controlling direct-current air conditioner and air conditioner | |
| CN114216217B (en) | Method and device for adjusting power supply of air conditioner and air conditioner | |
| CN114508809B (en) | Method and device for humidifying air conditioner and air conditioner | |
| CN114608160B (en) | Method and device for controlling direct-current air conditioner and air conditioner | |
| CN114608159B (en) | Method and device for controlling direct-current air conditioner and air conditioner | |
| CN112856773A (en) | Equipment linkage control method and system, control equipment and readable storage medium | |
| CN113357805B (en) | Control method and control device for compressor and air conditioner | |
| CN114484719B (en) | Method and device for controlling air conditioner and air conditioner | |
| CN110412895B (en) | Control method and control device for socket and socket | |
| CN107940700B (en) | Air conditioner control method and device | |
| CN117308310A (en) | Method and device for controlling refrigeration of air conditioner, air conditioner and storage medium | |
| CN116147176A (en) | Method and device for controlling air conditioner and air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |