CN117515839A - Control method and device for air conditioner, air conditioner and storage medium - Google Patents

Control method and device for air conditioner, air conditioner and storage medium Download PDF

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Publication number
CN117515839A
CN117515839A CN202210904857.0A CN202210904857A CN117515839A CN 117515839 A CN117515839 A CN 117515839A CN 202210904857 A CN202210904857 A CN 202210904857A CN 117515839 A CN117515839 A CN 117515839A
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CN
China
Prior art keywords
air conditioner
bus voltage
value
preset
temperature value
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.)
Pending
Application number
CN202210904857.0A
Other languages
Chinese (zh)
Inventor
许国景
高保华
刘聚科
张鹏
国德防
宋玉军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qingdao Haier Air Conditioner Gen Corp Ltd, Qingdao Haier Air Conditioning Electric Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Priority to CN202210904857.0A priority Critical patent/CN117515839A/en
Priority to PCT/CN2023/088894 priority patent/WO2024021692A1/en
Publication of CN117515839A publication Critical patent/CN117515839A/en
Pending legal-status Critical Current

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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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation

Abstract

The application relates to the technical field of air conditioners and discloses a control method for an air conditioner, which comprises the following steps: acquiring bus voltage information of the air conditioner; acquiring an ambient temperature value of a space associated with the air conditioner under the condition that the bus voltage information indicates bus voltage drop; and under the condition that the environment temperature value is not matched with the preset comfort temperature value, controlling the air conditioner to execute the weak magnetic function so as to keep the frequency of the compressor. The method can enable the compressor to continuously and stably operate when the busbar voltage drops in the operation stage of the direct current air conditioner, and improves the operation reliability of the direct current air conditioner. The application also discloses a control device for the air conditioner, the air conditioner and a storage medium.

Description

Control method and device for air conditioner, air conditioner and storage medium
Technical Field
The present invention relates to the technical field of air conditioners, and for example, to a control method and device for an air conditioner, and a storage medium.
Background
At present, in the running process of a direct current air conditioner system, if a busbar voltage drop phenomenon occurs, the running of a compressor is greatly influenced, and even the compressor is stopped. Aiming at the condition of bus voltage drop of a direct current air conditioner, higher requirements are put forward on the real-time performance of bus voltage detection.
The related art discloses a voltage detection method, comprising: collecting voltage data of a bus and determining corresponding cut-off frequency; filtering the voltage data according to the cut-off frequency to obtain voltage detection data; and determining a corresponding detection value according to the voltage detection data, and determining a voltage detection result corresponding to the bus according to the detection value and a corresponding detection threshold. The voltage detection result obtained by the method can reflect the bus voltage change, so that the detection value capable of reflecting the bus voltage fluctuation is determined, the detection of whether the bus voltage is subjected to fluctuation such as drop and power failure is completed according to the detection value, the influence of the bus voltage fluctuation on electric equipment is effectively prevented, and the reliability of power supply detection and the reliability of operation of user equipment are improved.
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:
the related technology can realize real-time detection of the voltage value of the bus and acquire whether the bus voltage drops or not according to the detection value. However, when the bus voltage drops in the operation stage of the direct current air conditioner, the voltage detection method cannot ensure continuous and stable operation of the compressor, and the operation reliability of the direct current air conditioner is affected.
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 control method and device for an air conditioner, the air conditioner and a storage medium, so that a compressor continuously and stably operates when busbar voltage drops occur in the operation stage of the direct current air conditioner, and the operation reliability of the direct current air conditioner is improved.
In some embodiments, the method comprises: acquiring bus voltage information of the air conditioner; acquiring an ambient temperature value of a space associated with the air conditioner under the condition that the bus voltage information indicates bus voltage drop; and under the condition that the environment temperature value is not matched with the preset comfort temperature value, controlling the air conditioner to execute the weak magnetic function so as to keep the frequency of the compressor.
In some embodiments, the apparatus comprises: an acquisition module configured to acquire bus voltage information of the air conditioner; the judging module is configured to acquire an environment temperature value of a space associated with the air conditioner under the condition that the bus voltage information indicates bus voltage drop; and the execution module is configured to control the air conditioner to execute the field weakening function so as to maintain the frequency of the compressor under the condition that the environment temperature value is not matched with a preset comfort temperature value.
In some embodiments, the apparatus comprises a processor and a memory storing program instructions, the processor being configured to perform a control method for an air conditioner as previously described when the program instructions are executed.
In some embodiments, the air conditioner comprises a control device for an air conditioner as described above.
In some embodiments, the storage medium stores program instructions that, when executed, perform a control method for an air conditioner as described above
The control method and device for the air conditioner, the air conditioner and the storage medium provided by the embodiment of the disclosure can realize the following technical effects:
when the air conditioner determines that the bus voltage drops according to the bus voltage information, whether the environment temperature value is matched with a preset comfort temperature value or not is judged. If there is no match, this indicates a decrease in the frequency of the compressor. After the air conditioner executes the field weakening function, the frequency of the compressor can be basically maintained, so that the condition that the frequency of the compressor is reduced is effectively overcome. Therefore, when the bus voltage drops in the operation stage of the air conditioner, the compressor can continuously and stably operate by executing the field weakening function, so that the operation reliability of the direct current air conditioner 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 control method for an air conditioner according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of another control method for an air conditioner according to an embodiment of the present disclosure;
fig. 3 is a schematic view of another control method for an air conditioner provided in an embodiment of the present disclosure;
fig. 4 is a schematic diagram of another control method for an air conditioner provided in an embodiment of the present disclosure;
fig. 5 is a schematic diagram of another control method for an air conditioner provided in an embodiment of the present disclosure;
fig. 6 is a schematic diagram of another control method for an air conditioner provided in an embodiment of the present disclosure;
fig. 7 is a schematic view of a control apparatus for an air conditioner according to an embodiment of the present disclosure;
fig. 8 is a schematic view of another control apparatus for an air conditioner provided in 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.
The related art discloses a voltage detection method, comprising: collecting voltage data of a bus and determining corresponding cut-off frequency; filtering the voltage data according to the cut-off frequency to obtain voltage detection data; and determining a corresponding detection value according to the voltage detection data, and determining a voltage detection result corresponding to the bus according to the detection value and a corresponding detection threshold. The voltage detection result obtained by the method can reflect the bus voltage change, so that the detection value capable of reflecting the bus voltage fluctuation is determined, the detection of whether the bus voltage is subjected to fluctuation such as drop and power failure is completed according to the detection value, the influence of the bus voltage fluctuation on electric equipment is effectively prevented, and the reliability of power supply detection and the reliability of operation of user equipment are improved.
The related technology can realize real-time detection of the voltage value of the bus and acquire whether the bus voltage drops or not according to the detection value. However, when the bus voltage drops in the operation stage of the direct current air conditioner, the voltage detection method cannot ensure continuous and stable operation of the compressor, and the operation reliability of the direct current air conditioner is affected.
As shown in fig. 1, an embodiment of the present disclosure provides a control method for an air conditioner, including:
s01, the air conditioner acquires bus voltage information of the air conditioner.
S02, the air conditioner obtains an environment temperature value of a space associated with the air conditioner when the bus voltage information indicates bus voltage drop.
S03, controlling the air conditioner to execute the weak magnetic function under the condition that the environment temperature value is not matched with the preset comfort temperature value so as to keep the frequency of the compressor.
By adopting the control method for the air conditioner, which is provided by the embodiment of the disclosure, when the air conditioner determines that the bus voltage drops according to the bus voltage information, whether the environment temperature value is matched with the preset comfortable temperature value is judged. If there is no match, this indicates a decrease in the frequency of the compressor. After the air conditioner executes the field weakening function, the frequency of the compressor can be basically maintained, so that the condition that the frequency of the compressor is reduced is effectively overcome. Therefore, when the bus voltage drops in the operation stage of the air conditioner, the compressor can continuously and stably operate by executing the field weakening function, so that the operation reliability of the direct current air conditioner is improved.
Optionally, the ambient temperature value does not match the preset comfort temperature value, including the ambient temperature value being outside a temperature range in which the preset comfort temperature value is located. As an example, when the air conditioner is operated in the cooling mode, the preset comfort temperature value is 24 ℃. The ambient temperature value does not match the preset comfort temperature value including the ambient temperature value being outside (23 ℃,25 ℃).
Optionally, as shown in conjunction with fig. 2, the air conditioner controls the air conditioner to perform a flux weakening function, including:
s11, the air conditioner acquires an instruction voltage value of the air conditioner.
S12, the air conditioner controls the weak current amplitude and/or the weak current compensation angle value to be increased according to the matching condition of the command voltage value and the preset threshold value.
Thus, since the command voltage value should satisfy the judgment condition smaller than the preset threshold value. When the air conditioner executes the weak magnetic function, the command voltage value is compared with the effective value of the bus voltage, and if the command voltage value does not meet the judging condition, the weak magnetic current value and/or the weak magnetic current compensation angle value are controlled to be increased, so that the frequency of the compressor is basically maintained by continuously running the weak magnetic function.
The preset threshold value is an effective value of the bus voltage. As an example: the effective value of the bus voltage is equal toWherein E is d Representing the maximum magnitude of the bus voltage.
Optionally, as shown in fig. 3, the air conditioner controls the weak current amplitude and/or the weak current compensation angle value to be increased according to the matching condition of the command voltage value and the preset threshold value, including:
s21, when the command voltage value is smaller than the effective value of the bus voltage, the air conditioner increases the weak current amplitude value by a first preset variation.
S22, the air conditioner reacquires a new command voltage value.
S23, when the new command voltage value is equal to the effective value of the bus voltage, the air conditioner increases the weak current compensation angle value by a second preset variation.
Thus, the air conditioner will cause the command voltage value to increase and gradually approach the effective value of the bus voltage after increasing the weak current amplitude by the first preset variation amount. In order to meet the judgment condition that the command voltage value meets the preset threshold value, the air conditioner increases the weak magnetic current angle value to continue to execute the weak magnetic function under the condition that the new command voltage value is equal to the effective value of the bus voltage.
It should be noted that, when the air conditioner increases the weak magnetic current compensation angle value by the second preset variation, the second preset variation also satisfies the following conditions: the second preset variation is more than or equal to 0 and less than or equal to 30rad.
Alternatively, as shown in connection with fig. 4, the preset variation is obtained as follows:
s31, the air conditioner extracts the current drop amplitude of the bus voltage from the bus voltage information.
S32, the air conditioner determines a preset variation according to the falling amplitude.
Therefore, the air conditioner can correspondingly adjust the weak current value and/or the weak current compensation angle value according to the current drop amplitude of the bus voltage, so that the weak current value and/or the weak current compensation angle value are matched with the current drop amplitude. And the accuracy of weak magnetic regulation is improved.
Optionally, the air conditioner determines the preset variation according to the drop amplitude, and the preset variation may be determined according to the following formula:
a×ΔE d +b；
wherein ΔE is d Represents the drop amplitude of the bus voltage, a represents a first coefficient, b represents a second coefficient and a<0,b>0. The preset variable quantity comprises a first preset variable quantity and/or a second preset variable quantity.
Therefore, the first preset variable quantity and/or the second preset variable quantity which are in linear function relation with the drop amplitude of the bus voltage can be obtained, and the accuracy of weak magnetic regulation can be effectively improved.
Alternatively, as shown in connection with fig. 5, the bus voltage drop is determined as follows:
s41, the air conditioner extracts the dropping speed and the dropping amplitude from the bus voltage information.
S42, determining the voltage sag of the bus under the condition that the sag rate is larger than the preset sag rate and the sag amplitude is larger than the preset sag amplitude.
Therefore, when the falling speed of the air conditioner is larger than the preset falling speed and the falling amplitude is larger than the preset falling amplitude, the air conditioner indicates that the bus voltage falls. The method can realize accurate judgment of the voltage drop of the bus.
The air conditioner is provided with a bus voltage detection circuit. The bus voltage detection circuit is used for collecting bus voltage information and extracting dropping speed and dropping amplitude from the bus voltage information.
As shown in fig. 6, an embodiment of the present disclosure further provides a control method for an air conditioner, including:
s51, the air conditioner acquires bus voltage information of the air conditioner.
S52, the air conditioner obtains the environment temperature value of the space associated with the air conditioner when the bus voltage information indicates the bus voltage drop.
S53, the air conditioner judges whether the environmental temperature value is matched with a preset comfort temperature value, and if not, S54 is executed. If so, S55 is performed.
S54, the air conditioner controls the air conditioner to execute the flux weakening function so as to maintain the frequency of the compressor.
S55, the air conditioner controls the compressor to execute the frequency-reducing operation.
By adopting the control method for the air conditioner, when the air conditioner determines that the environment temperature value is matched with the preset comfort temperature value, the air conditioner indicates that the environment temperature value reaches the preset comfort value. The ambient temperature value has satisfied the temperature demand of the user. At this time, the air conditioner controls the compressor to perform the frequency-reducing operation, so as to avoid the situation that the temperature value of the environment is reduced due to the frequency-increasing of the compressor, so that the temperature value of the environment is kept, and the temperature requirement of a user on the environment is continuously met. At the same time, the energy consumption of the air conditioner is reduced.
Alternatively, the air conditioner may control the compressor to perform the frequency-down operation, and may decrease the compressor frequency by a preset frequency variation amount. The preset frequency change rate can be determined according to the model of the air conditioner, and also can be determined according to the temperature requirement of a user on the environment. Embodiments of the present disclosure may not be particularly limited thereto.
Therefore, the frequency of the compressor of the air conditioner is slowly reduced, the influence on the stable operation of the compressor due to the sudden frequency drop is avoided, and the operation reliability of the air conditioner is improved.
As an example, the preset frequency change rate is determined according to the model of the air conditioner, and the preset frequency change rate satisfies the following condition: the current frequency multiplied by 0.2 is less than or equal to the preset frequency variation quantity is less than or equal to the current frequency multiplied by 0.5. Wherein, the current frequency represents a frequency value of the compressor obtained when the air conditioner controls the compressor to perform the down-conversion operation.
In practical application, the control method for the air conditioner specifically performs the following steps:
s61, the air conditioner obtains bus voltage information through a bus voltage detection circuit, and extracts a drop amplitude delta E from the bus voltage information d And a drop rate lambda. Through judgment, delta E d Greater than the preset drop magnitude and lambda greater than the preset drop rate. From this, the bus voltage drop is determined.
S62, the air conditioner acquires an environment temperature value of the space where the air conditioner is located, and the environment temperature value is higher than a preset comfort temperature value and is not matched through judgment. The air conditioner performs a flux weakening function.
S63, the air conditioner acquires a command voltage value V. Through the judgment, the device can judge whether the current is high or not,
the air conditioner uses the first preset variation delta I d Increasing the weak current amplitude.
ΔI d ＝a×ΔE d +b。
S64, the air conditioner re-acquires bus voltage information and extracts new drop amplitude delta from the new bus voltage informationE' d And a new drop rate lambda'. It will be determined that lambda 'is less than the preset drop rate and deltae' d Is greater than a preset dip amplitude. This means that the busbar voltage no longer drops continuously by the above-described adjustment of the weak current amplitude.
As shown in fig. 7, an embodiment of the present disclosure provides a control device for an air conditioner, including an acquisition module 201, a judgment module 202, and an execution module 203. The acquisition module 201 is configured to acquire bus voltage information of the air conditioner; the judging module 202 is configured to acquire an ambient temperature value of a space associated with the air conditioner in a case where the bus voltage information indicates a bus voltage drop; the execution module 203 is configured to control the air conditioner to execute the flux weakening function to maintain the frequency of the compressor in case the ambient temperature value does not match the preset comfort temperature value.
By adopting the control device for the air conditioner, when the bus voltage drops in the operation stage of the air conditioner, the compressor can continuously and stably operate by executing the field weakening function, so that the operation reliability of the direct current air conditioner is improved.
As shown in fig. 8, an embodiment of the present disclosure provides a control apparatus for an 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 control method for an 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 control method for an 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 an air conditioner, which comprises the control device for the air conditioner.
Embodiments of the present disclosure provide a computer-readable storage medium storing computer-executable instructions configured to perform the above-described control method for an air conditioner.
The disclosed embodiments provide a computer program product comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the above-described control method for an air conditioner.
The computer readable storage medium may be a transitory computer readable storage medium or a non-transitory computer readable 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 (10)

1. A control method for an air conditioner, comprising:
acquiring bus voltage information of the air conditioner;
acquiring an ambient temperature value of a space associated with the air conditioner under the condition that the bus voltage information indicates bus voltage drop;
and under the condition that the environment temperature value is not matched with the preset comfort temperature value, controlling the air conditioner to execute the weak magnetic function so as to keep the frequency of the compressor.
2. The method of claim 1, wherein the controlling the air conditioner to perform a flux weakening function comprises:
acquiring an instruction voltage value of the air conditioner;
and controlling the weak current amplitude and/or the weak current compensation angle value to be increased according to the matching condition of the command voltage value and a preset threshold value.
3. The method according to claim 2, wherein the controlling the increase of the weak current amplitude and/or the weak current compensation angle value according to the matching condition of the command voltage value and the preset threshold value comprises:
increasing the weak current amplitude by a first preset variation under the condition that the command voltage value is smaller than the effective value of the bus voltage;
re-acquiring a new command voltage value;
and under the condition that the new command voltage value is equal to the effective value of the bus voltage, increasing the weak current compensation angle value by a second preset variation.
4. A method according to claim 3, characterized in that the preset variation is obtained in the following way:
extracting the current drop amplitude of the bus voltage from the bus voltage information;
determining a preset variation according to the falling amplitude;
the preset variable quantity comprises the first preset variable quantity and/or the second preset variable quantity.
5. The method according to any one of claims 1 to 4, characterized in that the bus voltage drop is determined in the following way:
extracting a dropping speed and a dropping amplitude from the bus voltage information;
and determining the voltage sag of the bus under the condition that the sag rate is larger than a preset sag rate and the sag amplitude is larger than a preset sag amplitude.
6. The method according to any one of claims 1 to 4, further comprising:
and under the condition that the environment temperature value is matched with the preset comfort temperature value, controlling the compressor to execute the frequency-reducing operation.
7. A control apparatus for an air conditioner, comprising:
an acquisition module configured to acquire bus voltage information of the air conditioner;
the judging module is configured to acquire an environment temperature value of a space associated with the air conditioner under the condition that the bus voltage information indicates bus voltage drop;
and the execution module is configured to control the air conditioner to execute the field weakening function so as to maintain the frequency of the compressor under the condition that the environment temperature value is not matched with a preset comfort temperature value.
8. A control apparatus for an air conditioner comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the control method for an air conditioner according to any one of claims 1 to 6 when the program instructions are executed.
9. An air conditioner comprising the control device for an air conditioner according to claim 7 or 8.
10. A storage medium storing program instructions which, when executed, perform the control method for an air conditioner according to any one of claims 1 to 6.
CN202210904857.0A 2022-07-29 2022-07-29 Control method and device for air conditioner, air conditioner and storage medium Pending CN117515839A (en)

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CN202210904857.0A CN117515839A (en) 2022-07-29 2022-07-29 Control method and device for air conditioner, air conditioner and storage medium
PCT/CN2023/088894 WO2024021692A1 (en) 2022-07-29 2023-04-18 Control method and apparatus for air conditioner, and air conditioner and storage medium

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CN202210904857.0A CN117515839A (en) 2022-07-29 2022-07-29 Control method and device for air conditioner, air conditioner and storage medium

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Publication number Priority date Publication date Assignee Title
WO2008152929A1 (en) * 2007-06-12 2008-12-18 Kabushiki Kaisha Yaskawa Denki Motor control device and its control method
CN110212831A (en) * 2019-05-06 2019-09-06 南京理工大学 Consider the IPMSM field weakening control method in the case of DC bus-bar voltage falls
CN110701828B (en) * 2019-10-21 2021-09-21 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
CN113346804B (en) * 2020-03-02 2023-06-13 广东威灵电机制造有限公司 Motor control method, motor control device, motor system, and storage medium
CN112865070B (en) * 2020-12-28 2022-11-01 珠海格力电器股份有限公司 Control device and method of power supply system and air conditioning unit

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