CN114738977A - Air conditioner flux weakening angle control method and device and storage medium - Google Patents
Air conditioner flux weakening angle control method and device and storage medium Download PDFInfo
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- 230000004907 flux Effects 0.000 title claims abstract description 153
- 238000000034 method Methods 0.000 title claims abstract description 63
- 238000004378 air conditioning Methods 0.000 claims abstract description 96
- 230000008569 process Effects 0.000 claims abstract description 11
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- 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
- F24F2110/12—Temperature of the outside air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The disclosure relates to a method and a device for controlling a flux weakening angle of an air conditioner and a storage medium. The air conditioner flux weakening angle control method comprises the following steps: responding to the fact that an air conditioner enters a weak magnetic control mode, obtaining the running frequency of an air conditioner compressor, and monitoring the outdoor environment temperature of the air conditioner compressor in the running process; and adjusting the flux weakening angle of the air-conditioning compressor according to the operating frequency and the outdoor environment temperature. Through the method and the device, different weak magnetic angles can be distinguished and increased through different outdoor environment temperature intervals and the operation frequency difference value interval of the air conditioner compressor, and fine control of weak magnetic control is realized.
Description
Technical Field
The disclosure relates to the technical field of air conditioners, in particular to a method and a device for controlling a flux weakening angle of an air conditioner and a storage medium.
Background
The use of air conditioners is becoming more common and the control of air conditioners is constantly being optimized. Among them, control of the air conditioner compressor is an important study.
In the related art, in the operation process of an air conditioning system, a compressor cannot meet the power requirement in a constant power area, and needs to enter weak magnetic control to meet the power requirement. However, it is difficult to ensure the fine control of the flux weakening control under the premise of reliability by the method of adjusting power through flux weakening control.
Disclosure of Invention
In order to overcome the problems in the related art, the present disclosure provides a method and an apparatus for controlling a flux weakening angle of an air conditioner, and a storage medium.
According to a first aspect of the embodiments of the present disclosure, there is provided an air conditioner flux weakening angle control method, including: responding to the fact that an air conditioner enters a weak magnetic control mode, obtaining the running frequency of an air conditioner compressor, and monitoring the outdoor environment temperature of the air conditioner compressor in the running process; and adjusting the flux weakening angle of the air-conditioning compressor according to the operating frequency and the outdoor environment temperature.
In one embodiment, the adjusting the flux weakening angle of the air conditioner compressor according to the operation frequency and the outdoor ambient temperature comprises: if the operating frequency is less than the target operating frequency, determining the corresponding frequency flux weakening limit time after the air-conditioning compressor enters a flux weakening control mode; and responding to the fact that the frequency flux weakening limit time is larger than a preset flux weakening judgment time threshold, and adjusting the flux weakening angle of the air-conditioning compressor based on the operating frequency and the outdoor environment temperature.
In another embodiment, the adjusting the flux weakening angle of the air conditioner compressor based on the operating frequency and the outdoor ambient temperature includes: determining the angle adjustment amount of the flux weakening angle of the air-conditioning compressor according to the operating frequency and the outdoor environment temperature; and increasing the angle adjustment amount on the current flux weakening angle of the air-conditioning compressor.
In another embodiment, the determining an angle adjustment amount of a field weakening angle of the air conditioner compressor according to the operating frequency and the outdoor environment temperature includes: acquiring a preset weak magnetic outer ring upper limit threshold and a preset weak magnetic outer ring lower limit threshold; and determining the angle adjustment quantity of the flux weakening angle of the air-conditioning compressor based on the flux weakening outer ring upper limit threshold, the flux weakening outer ring lower limit threshold, the target operation frequency, the operation frequency and the outdoor environment temperature.
In another embodiment, the determining an angle adjustment amount of a field weakening angle of the air conditioner compressor based on the field weakening outer ring upper limit threshold, the field weakening outer ring lower limit threshold, the target operating frequency, the operating frequency and the outdoor environment temperature includes: if the outdoor environment temperature is smaller than the lower limit threshold of the weak magnetic outer ring, or the outdoor environment temperature is larger than the upper limit threshold of the weak magnetic outer ring, determining that the angle adjustment amount of the weak magnetic angle of the air-conditioning compressor is a first adjustment angle; and if the outdoor environment temperature is greater than or equal to the lower limit threshold of the flux weakening outer ring and less than or equal to the upper limit threshold of the flux weakening outer ring, determining the angle adjustment amount of the flux weakening angle of the air-conditioning compressor based on the difference between the target operation frequency and the operation frequency.
In yet another embodiment, the determining an angle adjustment amount of a field weakening angle of the air conditioning compressor based on a difference between the target operating frequency and the operating frequency includes: if the difference value between the target operation frequency and the operation frequency is larger than a first frequency difference value threshold value, determining that the angle adjustment amount of the flux weakening angle of the air-conditioning compressor is a second adjustment angle; if the difference value between the target operation frequency and the operation frequency is smaller than a first frequency difference value threshold value and larger than a second frequency difference value threshold value, determining that the angle adjustment amount of the flux weakening angle of the air-conditioning compressor is a third adjustment angle; if the difference value between the target operation frequency and the operation frequency is smaller than a second frequency difference value threshold value, determining that the angle adjustment quantity of the flux weakening angle of the air-conditioning compressor is a fourth adjustment angle; the fourth adjustment angle is smaller than the first adjustment angle, the first adjustment angle is smaller than the third adjustment angle, and the third adjustment angle is smaller than the second adjustment angle.
According to a second aspect of the embodiments of the present disclosure, there is provided an air conditioner flux weakening angle control device, including an obtaining unit, configured to obtain an operating frequency of an air conditioner compressor in response to an air conditioner entering a flux weakening control mode, and monitor an outdoor environment temperature of the air conditioner compressor during an operation process; and the adjusting unit is used for adjusting the flux weakening angle of the air-conditioning compressor according to the operating frequency and the outdoor environment temperature.
In one embodiment, the adjusting unit adjusts the field weakening angle of the air conditioner compressor according to the operating frequency and the outdoor ambient temperature in the following manner: if the operating frequency is less than the target operating frequency, determining the corresponding frequency flux weakening limit time after the air-conditioning compressor enters a flux weakening control mode; and responding to the fact that the frequency flux weakening limit time is larger than a preset flux weakening judgment time threshold, and adjusting the flux weakening angle of the air-conditioning compressor based on the operating frequency and the outdoor environment temperature.
In another embodiment, the adjusting unit adjusts the flux weakening angle of the air conditioner compressor based on the operating frequency and the outdoor ambient temperature in the following manner: determining the angle adjustment amount of the flux weakening angle of the air-conditioning compressor according to the operating frequency and the outdoor environment temperature; and increasing the angle adjustment amount on the current flux weakening angle of the air-conditioning compressor.
In another embodiment, the adjusting unit determines the angle adjustment amount of the field weakening angle of the air conditioner compressor according to the operating frequency and the outdoor environment temperature in the following manner: acquiring a preset weak magnetic outer ring upper limit threshold and a preset weak magnetic outer ring lower limit threshold; and determining the angle adjustment amount of the flux weakening angle of the air-conditioning compressor based on the flux weakening outer ring upper limit threshold, the flux weakening outer ring lower limit threshold, the target operation frequency, the operation frequency and the outdoor environment temperature.
In another embodiment, the adjusting unit determines the angle adjustment amount of the flux weakening angle of the air-conditioning compressor based on the flux weakening outer ring upper limit threshold, the flux weakening outer ring lower limit threshold, the target operating frequency, the operating frequency and the outdoor ambient temperature in the following manner: if the outdoor environment temperature is smaller than the lower limit threshold of the weak magnetic outer ring, or the outdoor environment temperature is larger than the upper limit threshold of the weak magnetic outer ring, determining that the angle adjustment amount of the weak magnetic angle of the air-conditioning compressor is a first adjustment angle; and if the outdoor environment temperature is greater than or equal to the lower limit threshold of the flux weakening outer ring and less than or equal to the upper limit threshold of the flux weakening outer ring, determining the angle adjustment amount of the flux weakening angle of the air-conditioning compressor based on the difference between the target operation frequency and the operation frequency.
In another embodiment, the adjusting unit determines the angle adjustment amount of the field weakening angle of the air conditioning compressor based on the difference between the target operating frequency and the operating frequency in the following manner: if the difference value between the target operation frequency and the operation frequency is larger than a first frequency difference value threshold value, determining that the angle adjustment amount of the flux weakening angle of the air-conditioning compressor is a second adjustment angle; if the difference value between the target operation frequency and the operation frequency is smaller than a first frequency difference value threshold value and larger than a second frequency difference value threshold value, determining that the angle adjustment amount of the flux weakening angle of the air-conditioning compressor is a third adjustment angle; if the difference value between the target operation frequency and the operation frequency is smaller than a second frequency difference value threshold value, determining that the angle adjustment quantity of the flux weakening angle of the air-conditioning compressor is a fourth adjustment angle; the fourth adjustment angle is smaller than the first adjustment angle, the first adjustment angle is smaller than the third adjustment angle, and the third adjustment angle is smaller than the second adjustment angle.
According to a third aspect of the embodiments of the present disclosure, there is provided an air conditioner flux weakening angle control device, including: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: the method for executing the flux weakening angle control of the air conditioner in the first aspect or any one of the embodiments of the first aspect.
According to a fourth aspect of embodiments of the present disclosure, there is provided a storage medium, wherein the storage medium stores instructions, and when the instructions in the storage medium are executed by a processor of a terminal, the terminal including the processor is enabled to execute the method for controlling the flux weakening angle of the air conditioner in the first aspect or any one of the implementation manners of the first aspect.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the operation frequency of the air conditioner compressor cannot be operated to reach the target operation frequency, at the moment, the weak magnetic control is performed, different weak magnetic angles can be distinguished and increased according to different outdoor environment temperature intervals and the operation frequency difference interval of the air conditioner compressor, and fine control of the weak magnetic control is achieved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a flowchart illustrating a flux weakening angle control method of an air conditioner according to an exemplary embodiment.
Fig. 2 is a flowchart illustrating a method of adjusting a field weakening angle of an air conditioner compressor according to an operating frequency and an outdoor ambient temperature according to an exemplary embodiment.
Fig. 3 is a flowchart illustrating a method of adjusting a field weakening angle of an air conditioner compressor based on an operation frequency and an outdoor ambient temperature according to an exemplary embodiment.
Fig. 4 is a flowchart illustrating a method of determining an angle adjustment amount of a field weakening angle of an air conditioner compressor according to an operating frequency and an outdoor ambient temperature according to an exemplary embodiment.
Fig. 5 is a flowchart illustrating a method of determining an angle adjustment amount of a field weakening angle of an air conditioner compressor based on a field weakening outer ring upper limit threshold, a field weakening outer ring lower limit threshold, a target operating frequency, an operating frequency, and an outdoor ambient temperature according to an exemplary embodiment.
Fig. 6 is a flowchart illustrating a method of determining an angle adjustment amount of a field weakening angle of an air conditioner compressor based on a difference between a target operating frequency and an operating frequency according to an exemplary embodiment.
Fig. 7 is a schematic diagram illustrating a method for controlling a flux weakening angle of an air conditioner according to an exemplary embodiment.
Fig. 8 is a block diagram illustrating a flux weakening angle control apparatus of an air conditioner according to an exemplary embodiment.
Fig. 9 is a block diagram illustrating an apparatus for flux weakening angle control of an air conditioner according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure.
In the related technology, an air conditioner compressor operates in a constant power area, when the actual power requirement of a system is larger than the power which can be provided by the current air conditioner compressor, the operating frequency of the air conditioner compressor cannot operate to a target operating frequency, at the moment, weak magnetic control is performed, but the weak magnetic angle is difficult to achieve fine control in the weak magnetic control process. For example, after the air conditioner compressor enters the field weakening control, the field weakening angle cannot be finely controlled through the outdoor environment and the difference interval between the operating frequency and the target frequency.
The embodiment of the disclosure provides a scheme for adjusting a flux weakening angle of an air conditioner compressor through an operating frequency and an outdoor environment temperature so as to finely control the flux weakening angle.
Fig. 1 is a flowchart illustrating an air conditioner flux weakening angle control method according to an exemplary embodiment, and as shown in fig. 1, the air conditioner flux weakening angle control method includes the following steps.
In step S11, in response to the air conditioner entering the weak magnetic control mode, the operating frequency of the air conditioner compressor is obtained, and the outdoor ambient temperature during the operation of the air conditioner compressor is monitored.
In the embodiment of the disclosure, the actual operating frequency of the air conditioner compressor cannot reach the target operating frequency, and the air conditioner needs to enter the weak magnetic control mode, so that the actual operating frequency is increased to reach the target operating frequency.
In the embodiment of the disclosure, the operating frequency of the air conditioner compressor can be measured by using a clamp meter. The outdoor environment temperature of the air-conditioning compressor in the operation process can be measured by a temperature sensing probe arranged on an outdoor radiator of the air-conditioning compressor and is used for detecting the outdoor temperature of the air-conditioning compressor in the operation process.
In step S12, the field weakening angle of the air conditioner compressor is adjusted according to the operating frequency and the outdoor ambient temperature.
According to the method for controlling the flux weakening angle of the air conditioner, the target operation frequency of the current operation frequency of the air conditioner compressor is judged through measuring the operation frequency and the outdoor temperature of the air conditioner compressor and through the outdoor environment temperature. And judging the difference value between the current operating frequency of the air conditioner compressor and the target operating frequency. And controlling the flux weakening angle of the air-conditioning compressor according to the difference value between the current operating frequency of the air-conditioning compressor and the target operating frequency, so as to achieve the purpose of finely controlling the operating frequency of the air-conditioning compressor.
The following embodiments of the present disclosure further explain and explain a method of adjusting a field weakening angle of an air conditioner compressor in the above embodiments of the present disclosure.
Fig. 2 is a flowchart illustrating a method of adjusting a field weakening angle of an air conditioner compressor according to an operating frequency and an outdoor ambient temperature, as shown in fig. 2, the method of adjusting the field weakening angle of the air conditioner compressor according to the operating frequency and the outdoor ambient temperature includes the following steps.
In step S21, if the operating frequency is less than the target operating frequency, the time of the frequency flux weakening limit corresponding to the air conditioner compressor entering the flux weakening control mode is determined.
In the embodiment of the disclosure, if the operating frequency of the air-conditioning compressor is less than the target operating frequency, it is determined that the air-conditioning compressor enters the weak magnetic control mode. And starting timing when the air conditioner compressor enters a weak magnetic control mode, wherein the obtained time is the frequency weak magnetic limit time.
In step S22, in response to the frequency flux weakening limit time being greater than the preset flux weakening determination time threshold, the flux weakening angle of the air-conditioning compressor is adjusted based on the operating frequency and the outdoor ambient temperature.
In the embodiment of the disclosure, a weak magnetic judgment time threshold is preset, wherein the weak magnetic judgment time threshold is a threshold for judging the time for the air conditioner compressor to enter the weak magnetic control mode. The time for the air conditioner compressor to enter the weak magnetic control mode is long, which shows that the difference between the current operating frequency of the air conditioner compressor and the target operating frequency is large. For example, the field weakening determination time threshold may be set in advance to 1 minute based on the operating frequency of the air conditioner compressor and the target operating frequency.
In the embodiment of the disclosure, the time of the frequency flux weakening limit value is greater than the preset flux weakening judgment time threshold value, and it can be judged that the current flux weakening angle of the air-conditioning compressor cannot meet the requirement of enabling the operating frequency of the air-conditioning compressor to reach the target operating frequency. Therefore, the flux weakening angle of the air-conditioning compressor is adjusted based on the operating frequency of the air-conditioning compressor and the outdoor environment temperature.
The following embodiments of the present disclosure further explain and explain the method of adjusting a flux weakening angle of an air conditioner compressor in the above embodiments of the present disclosure.
Fig. 3 is a flowchart illustrating a method of adjusting a field weakening angle of an air conditioner compressor based on an operating frequency and an outdoor ambient temperature according to an exemplary embodiment, and the method of adjusting the field weakening angle of the air conditioner compressor based on the operating frequency and the outdoor ambient temperature, as shown in fig. 3, includes the following steps.
In step S31, an angle adjustment amount of the field weakening angle of the air conditioner compressor is determined based on the operating frequency and the outdoor ambient temperature.
In the embodiment of the disclosure, the difference between the current operating frequency of the air-conditioning compressor and the target operating frequency can be obtained according to the current operating frequency of the air-conditioning compressor, and the flux weakening control can be performed according to the outdoor environment temperature when the current air-conditioning compressor is under a heavy load condition. And determining the angle adjustment amount of the current flux weakening angle of the air-conditioning compressor according to the difference value with the target operation frequency and the load condition of the current air-conditioning compressor.
In step S32, the angle adjustment amount is increased on the current field weakening angle of the air conditioner compressor.
In the embodiment of the disclosure, according to the difference value with the target operating frequency and the load condition of the current air-conditioning compressor, the determined angle adjustment amount of the air-conditioning compressor is added to the current weak magnetic angle of the air-conditioning compressor, so as to obtain the target weak magnetic angle which can finally enable the operating frequency of the air-conditioning compressor to reach the target operating frequency.
The following embodiments of the present disclosure further explain and explain methods of determining an angle adjustment amount of a field weakening angle of an air conditioner compressor in the above embodiments of the present disclosure.
Fig. 4 is a flowchart illustrating a method for determining an angle adjustment amount of a field weakening angle of an air conditioner compressor according to an operating frequency and an outdoor ambient temperature, as shown in fig. 4, the method for determining the angle adjustment amount of the field weakening angle of the air conditioner compressor according to the operating frequency and the outdoor ambient temperature includes the following steps.
In step S41, a weak magnetic outer ring upper limit threshold and a weak magnetic outer ring lower limit threshold set in advance are acquired.
In the embodiment of the disclosure, the preset upper limit threshold and the preset lower limit threshold of the weak magnetic outer ring are the upper limit temperature of the outdoor environment and the lower limit temperature of the outdoor environment. The upper limit threshold of the weak magnetic outer ring can be set to 58 degrees centigrade, and the lower limit threshold of the weak magnetic outer ring can be set to-10 degrees centigrade.
In step S42, an angle adjustment amount of the flux weakening angle of the air conditioner compressor is determined based on the flux weakening outer ring upper limit threshold, the flux weakening outer ring lower limit threshold, the target operating frequency, the operating frequency, and the outdoor ambient temperature.
In the embodiment of the disclosure, based on the upper limit threshold of the weak magnetic outer ring, the lower limit threshold of the weak magnetic outer ring, the target operating frequency, the operating frequency and the outdoor environment temperature, the relationship between the current outdoor environment temperature of the air conditioner compressor and the threshold of the weak magnetic outer ring can be obtained. And judging the load condition of the air-conditioning compressor, the target operation frequency and the current operation frequency to obtain the angle adjustment quantity of the flux weakening angle of the air-conditioning compressor.
The following embodiments of the present disclosure further explain and explain methods of determining an angle adjustment amount of a field weakening angle of an air conditioner compressor in the above embodiments of the present disclosure.
Fig. 5 is a flowchart illustrating a method for determining an angle adjustment amount of a field weakening angle of an air conditioner compressor based on a field weakening outer ring upper limit threshold, a field weakening outer ring lower limit threshold, a target operation frequency, an operation frequency, and an outdoor ambient temperature according to an exemplary embodiment, where the method for determining the angle adjustment amount of the field weakening angle of the air conditioner compressor based on the field weakening outer ring upper limit threshold, the field weakening outer ring lower limit threshold, the target operation frequency, the operation frequency, and the outdoor ambient temperature, as shown in fig. 5, includes the following steps.
In step S51, if the outdoor environment temperature is less than the lower limit threshold of the flux weakening outer ring, or the outdoor environment temperature is greater than the upper limit threshold of the flux weakening outer ring, it is determined that the angle adjustment amount of the flux weakening angle of the air conditioner compressor is the first adjustment angle.
In the embodiment of the disclosure, the upper threshold of the weak magnetic outer ring and the lower threshold of the weak magnetic outer ring are generally used to determine whether the outdoor environment is in a state of over-high temperature or over-low temperature. If the outdoor environment temperature is less than the lower limit threshold of the weak magnetic outer ring or the outdoor environment temperature is greater than the upper limit threshold of the weak magnetic outer ring, the air-conditioning compressor can be judged to be in a state that the outdoor environment temperature is too high or too low, and the air-conditioning compressor is in the condition of heavy load to carry out weak magnetic control. At this moment, the weak magnetic control of the air-conditioning compressor needs a larger weak magnetic angle within a certain range, but the weak magnetic angle cannot exceed the range, so that the air-conditioning compressor is prevented from being out of step. For example, the first adjustment angle may be set to 20 degrees.
In step S52, if the outdoor ambient temperature is greater than or equal to the flux weakening outer ring lower limit threshold and less than or equal to the flux weakening outer ring upper limit threshold, an angle adjustment amount of the flux weakening angle of the air-conditioning compressor is determined based on the difference between the target operating frequency and the operating frequency.
In the embodiment of the disclosure, the outdoor environment temperature is greater than or equal to the lower limit threshold of the weak magnetic outer ring and less than or equal to the upper limit threshold of the weak magnetic outer ring, so that it can be determined that the air conditioner compressor is in a normal state, and the air conditioner compressor performs weak magnetic control under a normal load condition. At this time, an angle adjustment amount of the flux weakening angle of the air conditioner compressor is determined according to a difference between the target operation frequency and the operation frequency.
The following embodiments of the present disclosure further explain and explain methods of determining an angle adjustment amount of a field weakening angle of an air conditioner compressor in the above embodiments of the present disclosure.
Fig. 6 is a flowchart illustrating a method of determining an angle adjustment amount of a field weakening angle of an air conditioner compressor based on a difference between a target operating frequency and an operating frequency according to an exemplary embodiment, and the method of determining the angle adjustment amount of the field weakening angle of the air conditioner compressor based on the difference between the target operating frequency and the operating frequency, as shown in fig. 6, includes the following steps.
In step S61, if the difference between the target operating frequency and the operating frequency is greater than the first frequency difference threshold, it is determined that the angle adjustment amount of the flux weakening angle of the air conditioner compressor is the second adjustment angle.
In the embodiment of the present disclosure, the first frequency difference threshold is a higher frequency difference threshold for determining a difference between the target operating frequency and the operating frequency, where the first frequency difference threshold may be set to 10 hz.
In the embodiment of the disclosure, the difference between the target operating frequency and the operating frequency is greater than the first frequency difference threshold, and it can be determined that the difference between the operating frequency and the target operating frequency is greater, so that the air-conditioning compressor requires a greater flux weakening angle for flux weakening control to meet the requirement that the operating frequency reaches the target operating frequency, for example, the second adjustment angle may be set to 35 degrees.
In step S62, if the difference between the target operating frequency and the operating frequency is smaller than the first frequency difference threshold and larger than the second frequency difference threshold, it is determined that the angle adjustment amount of the field weakening angle of the air conditioner compressor is the third adjustment angle.
In the embodiment of the disclosure, the difference between the target operating frequency and the operating frequency is smaller than the first frequency difference threshold, and it can be determined that there is a difference of a relatively medium magnitude between the operating frequency and the target operating frequency, so that the air-conditioning compressor can meet the requirement that the operating frequency reaches the target operating frequency without a large flux weakening angle in flux weakening control, for example, the third adjustment angle may be set to 25 degrees.
In step S63, if the difference between the target operating frequency and the operating frequency is less than the second frequency difference threshold, it is determined that the angle adjustment amount of the flux weakening angle of the air conditioner compressor is the fourth adjustment angle.
In the embodiment of the present disclosure, the second frequency difference threshold is a lower frequency difference threshold for determining a difference between the target operating frequency and the operating frequency, where the second frequency difference threshold may be set to be 5 hz.
In the embodiment of the present disclosure, the difference between the target operating frequency and the operating frequency is smaller than the second frequency difference threshold, and it may be determined that the difference between the operating frequency and the target operating frequency is smaller, so that the weak magnetic control of the air-conditioning compressor requires a small weak magnetic angle to meet the requirement that the operating frequency reaches the target operating frequency, for example, the fourth adjustment angle may be set to 15 degrees.
In the embodiment of the disclosure, the fourth adjustment angle is smaller than the first adjustment angle, the first adjustment angle is smaller than the third adjustment angle, and the third adjustment angle is smaller than the second adjustment angle.
The embodiment of the present disclosure will be described below with reference to an air conditioner as an example, and the control of the flux weakening angle in the flux weakening control of the air conditioner compressor according to the above embodiment of the present disclosure and the practical application thereof will be described as an example.
Fig. 7 is a schematic diagram illustrating a method of controlling a flux weakening angle of an air conditioner according to an exemplary embodiment.
Referring to fig. 7, in the embodiment of the present disclosure, the weak magnetic determination time threshold is 1 minute, the lower limit threshold of the weak magnetic outer ring is-10 degrees celsius, the upper limit threshold of the weak magnetic outer ring is 58 degrees celsius, the first frequency difference threshold is 10 hertz, the second frequency difference threshold is 5 hertz, the first adjustment angle is 20 degrees, the second adjustment angle is 35 degrees, the third adjustment angle is 25 degrees, and the fourth adjustment angle is 15 degrees.
In the embodiment of the disclosure, in the operation process of the air conditioner, the compressor is operated in the constant power region, and when the actual demand of the air conditioner system is greater than the operation power which can be provided by the current compressor, the operation frequency of the compressor is smaller than the target operation frequency, and the compressor cannot be operated to the target operation frequency. And no other frequency limiting factors such as temperature, current and the like. At this time, the air conditioner compressor enters a weak magnetic control mode.
In the embodiment of the disclosure, the air conditioner compressor enters the flux weakening control mode to start timing to obtain the frequency flux weakening limit time. The frequency flux weakening limiting time is used for judging the time for the air conditioner compressor to enter a flux weakening control mode. The method comprises the steps that the time for the air conditioner compressor to enter the weak magnetic control mode and the weak magnetic judgment time threshold value are 1 minute, and if the time for the air conditioner compressor to enter the weak magnetic control mode is more than 1 minute, the air conditioner weak magnetic angle control is started; and if the time for the air conditioner compressor to enter the weak magnetic control mode is less than 1 minute, the air conditioner continues to operate.
In the embodiment of the disclosure, the flux weakening angle control of the air conditioner is started, and whether the ambient temperature outside the compressor chamber of the air conditioner is between-10 ℃ and 58 ℃ which are preset is judged. And if the outdoor environment temperature of the air-conditioning compressor is in a preset temperature interval, the air-conditioning compressor is in normal load and performs flux weakening control. And if the outdoor environment temperature of the air-conditioning compressor is not in the preset temperature interval, the air-conditioning compressor is in light/heavy load to perform flux weakening control.
In the embodiment of the disclosure, when the air-conditioning compressor is judged to be under light/heavy load for flux weakening control, the air-conditioning compressor needs to limit an increased flux weakening angle, and flux weakening control is prevented from being performed under heavy/light load, the flux weakening angle is too large, and the torque is reduced to cause the out-of-control condition of the air-conditioning compressor. The weak magnetic angle of the air-conditioning compressor is the current weak magnetic angle plus a first adjusting angle: 20 degrees.
In the embodiment of the disclosure, when the air conditioner compressor is judged to be under the normal load for the flux weakening control, the difference between the operating frequency of the air conditioner compressor and the target operating frequency is continuously compared. When the difference between the operating frequency of the air conditioner compressor and the target operating frequency is greater than the first frequency difference threshold value of 10 Hz, it is indicated that the difference between the operating frequency of the air conditioner compressor and the target operating frequency is large, and the angle to be increased is also large. The weak magnetic angle of the air-conditioning compressor is the current weak magnetic angle plus a second adjusting angle: 35 degrees.
In the embodiment of the disclosure, when the difference between the operating frequency of the air conditioner compressor and the target operating frequency is less than the first frequency difference threshold value by 10 hz and greater than the second frequency difference threshold value by 5 hz, it indicates that the difference between the operating frequency of the air conditioner compressor and the target operating frequency is in a medium size. The weak magnetic angle of the air-conditioning compressor is the current weak magnetic angle plus a third adjusting angle: 25 degrees.
In this disclosure, when the difference between the operating frequency of the air conditioner compressor and the target operating frequency is less than the second frequency difference threshold value of 5 hz, it is described that the difference between the operating frequency of the air conditioner compressor and the target operating frequency is smaller, and the angle to be increased is also smaller. The weak magnetic angle of the air-conditioning compressor is the current weak magnetic angle plus a fourth adjusting angle: 15 degrees.
Based on the same conception, the embodiment of the disclosure also provides an air conditioner flux weakening angle control device.
It can be understood that, in order to implement the above functions, the air conditioner flux weakening angle control device provided in the embodiments of the present disclosure includes a hardware structure and/or a software module corresponding to each function. The disclosed embodiments can be implemented in hardware or a combination of hardware and computer software, in combination with the exemplary elements and algorithm steps disclosed in the disclosed embodiments. Whether a function is performed in hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.
Fig. 8 is a block diagram illustrating a flux weakening angle control apparatus of an air conditioner according to an exemplary embodiment. Referring to fig. 8, the apparatus includes an acquisition unit 101 and an adjustment unit 102.
The obtaining unit 101 is configured to obtain an operating frequency of the air conditioner compressor in response to the air conditioner entering the low-magnetism control mode, and monitor an outdoor environment temperature during an operation process of the air conditioner compressor.
The adjusting unit 102 is used for adjusting the flux weakening angle of the air conditioner compressor according to the operating frequency and the outdoor environment temperature.
In one embodiment, the adjusting unit 102 adjusts the flux weakening angle of the air conditioner compressor according to the operation frequency and the outdoor ambient temperature in the following manner: if the operating frequency is less than the target operating frequency, determining the corresponding frequency flux weakening limit time after the air-conditioning compressor enters a flux weakening control mode; and adjusting the flux weakening angle of the air-conditioning compressor based on the operating frequency and the outdoor environment temperature in response to the fact that the frequency flux weakening limit time is larger than a preset flux weakening judgment time threshold.
In another embodiment, the adjusting unit 102 adjusts the flux weakening angle of the air conditioner compressor based on the operation frequency and the outdoor ambient temperature in the following manner: determining the angle adjustment amount of the weak magnetic angle of the air-conditioning compressor according to the operating frequency and the outdoor environment temperature; and increasing the angle adjustment amount on the current flux weakening angle of the air-conditioning compressor.
In another embodiment, the adjusting unit 102 determines the angle adjustment amount of the flux weakening angle of the air conditioner compressor according to the operation frequency and the outdoor ambient temperature in the following manner: acquiring a preset weak magnetic outer ring upper limit threshold and a preset weak magnetic outer ring lower limit threshold; and determining the angle adjustment amount of the weak magnetic angle of the air-conditioning compressor based on the upper limit threshold value of the weak magnetic outer ring, the lower limit threshold value of the weak magnetic outer ring, the target operation frequency, the operation frequency and the outdoor environment temperature.
In another embodiment, the adjusting unit 102 determines the angle adjustment amount of the flux weakening angle of the air conditioner compressor based on the flux weakening outer ring upper limit threshold, the flux weakening outer ring lower limit threshold, the target operating frequency, the operating frequency and the outdoor environment temperature in the following manner: if the outdoor environment temperature is smaller than the lower limit threshold of the weak magnetic outer ring or the outdoor environment temperature is larger than the upper limit threshold of the weak magnetic outer ring, determining the angle adjustment quantity of the weak magnetic angle of the air-conditioning compressor as a first adjustment angle; and if the outdoor environment temperature is greater than or equal to the lower limit threshold of the weak magnetic outer ring and less than or equal to the upper limit threshold of the weak magnetic outer ring, determining the angle adjustment quantity of the weak magnetic angle of the air-conditioning compressor based on the difference between the target operating frequency and the operating frequency.
In another embodiment, the adjusting unit 102 determines the angle adjustment amount of the field weakening angle of the air conditioner compressor based on the difference between the target operation frequency and the operation frequency in the following manner: if the difference value between the target operation frequency and the operation frequency is larger than the first frequency difference value threshold value, determining that the angle adjustment amount of the flux weakening angle of the air-conditioning compressor is a second adjustment angle; if the difference value between the target operation frequency and the operation frequency is smaller than the first frequency difference value threshold value and larger than the second frequency difference value threshold value, determining that the angle adjustment amount of the flux weakening angle of the air-conditioning compressor is a third adjustment angle; if the difference value between the target operation frequency and the operation frequency is smaller than the second frequency difference value threshold value, determining that the angle adjustment quantity of the flux weakening angle of the air-conditioning compressor is a fourth adjustment angle; the fourth adjustment angle is smaller than the first adjustment angle, the first adjustment angle is smaller than the third adjustment angle, and the third adjustment angle is smaller than the second adjustment angle.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Fig. 9 is a block diagram illustrating an apparatus 200 for flux weakening angle control of an air conditioner according to an exemplary embodiment. For example, the apparatus 200 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
Referring to fig. 9, the apparatus 200 may include one or more of the following components: a processing component 202, a memory 204, a power component 206, a multimedia component 208, an audio component 210, an input/output (I/O) interface 212, a sensor component 214, and a communication component 216.
The processing component 202 generally controls overall operation of the device 200, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 202 may include one or more processors 220 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 202 can include one or more modules that facilitate interaction between the processing component 202 and other components. For example, the processing component 202 can include a multimedia module to facilitate interaction between the multimedia component 208 and the processing component 202.
The memory 204 is configured to store various types of data to support operations at the apparatus 200. Examples of such data include instructions for any application or method operating on the device 200, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 204 may be implemented by any type or combination of volatile and non-volatile storage devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The multimedia component 208 includes a screen that provides an output interface between the device 200 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 208 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 200 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 210 is configured to output and/or input audio signals. For example, audio component 210 includes a Microphone (MIC) configured to receive external audio signals when apparatus 200 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 204 or transmitted via the communication component 216. In some embodiments, audio component 210 also includes a speaker for outputting audio signals.
The I/O interface 212 provides an interface between the processing component 202 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor assembly 214 includes one or more sensors for providing various aspects of status assessment for the device 200. For example, the sensor assembly 214 may detect an open/closed state of the device 200, the relative positioning of components, such as a display and keypad of the device 200, the sensor assembly 214 may also detect a change in the position of the device 200 or a component of the device 200, the presence or absence of user contact with the device 200, the orientation or acceleration/deceleration of the device 200, and a change in the temperature of the device 200. The sensor assembly 214 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 214 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 214 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 216 is configured to facilitate wired or wireless communication between the apparatus 200 and other devices. The device 200 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 216 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 216 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 200 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as memory 204, comprising instructions executable by processor 220 of device 200 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
It is understood that "a plurality" in this disclosure means two or more, and other words are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.
It will be further understood that, unless otherwise specified, "connected" includes direct connections between the two without the presence of other elements, as well as indirect connections between the two with the presence of other elements.
It is further to be understood that while operations are depicted in the drawings in a particular order, this is not to be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is to be limited only by the scope of the appended claims.
Claims (9)
1. A method for controlling the flux weakening angle of an air conditioner is characterized by comprising the following steps:
responding to the fact that an air conditioner enters a weak magnetic control mode, obtaining the running frequency of an air conditioner compressor, and monitoring the outdoor environment temperature of the air conditioner compressor in the running process;
and adjusting the flux weakening angle of the air-conditioning compressor according to the operating frequency and the outdoor environment temperature.
2. The method of claim 1, wherein said adjusting a flux weakening angle of said air conditioning compressor based on said operating frequency and said outdoor ambient temperature comprises:
if the operating frequency is less than the target operating frequency, determining the corresponding frequency flux weakening limit time after the air conditioner compressor enters a flux weakening control mode;
and responding to the fact that the frequency flux weakening limit time is larger than a preset flux weakening judgment time threshold, and adjusting the flux weakening angle of the air-conditioning compressor based on the operating frequency and the outdoor environment temperature.
3. The method of claim 1 or 2, wherein the adjusting the flux weakening angle of the air conditioning compressor based on the operating frequency and the outdoor ambient temperature comprises:
determining the angle adjustment amount of the flux weakening angle of the air-conditioning compressor according to the operating frequency and the outdoor environment temperature;
and increasing the angle adjustment amount on the current flux weakening angle of the air-conditioning compressor.
4. The method of claim 3, wherein determining an angular adjustment of a field weakening angle of the air conditioning compressor based on the operating frequency and the outdoor ambient temperature comprises:
acquiring a preset weak magnetic outer ring upper limit threshold and a preset weak magnetic outer ring lower limit threshold;
and determining the angle adjustment amount of the flux weakening angle of the air-conditioning compressor based on the flux weakening outer ring upper limit threshold, the flux weakening outer ring lower limit threshold, the target operation frequency, the operation frequency and the outdoor environment temperature.
5. The method of claim 4, wherein the determining an angle adjustment amount of a flux weakening angle of the air conditioning compressor based on the flux weakening outer ring upper threshold, the flux weakening outer ring lower threshold, the target operating frequency, the operating frequency and the outdoor ambient temperature comprises:
if the outdoor environment temperature is smaller than the lower limit threshold of the weak magnetic outer ring, or the outdoor environment temperature is larger than the upper limit threshold of the weak magnetic outer ring, determining that the angle adjustment amount of the weak magnetic angle of the air-conditioning compressor is a first adjustment angle;
and if the outdoor environment temperature is greater than or equal to the lower limit threshold of the weak magnetic outer ring and less than or equal to the upper limit threshold of the weak magnetic outer ring, determining the angle adjustment quantity of the weak magnetic angle of the air-conditioning compressor based on the difference between the target operating frequency and the operating frequency.
6. The method of claim 5, wherein the determining an angular adjustment of a field weakening angle of the air conditioning compressor based on a difference between the target operating frequency and the operating frequency comprises:
if the difference value between the target operation frequency and the operation frequency is larger than a first frequency difference value threshold value, determining that the angle adjustment amount of the flux weakening angle of the air-conditioning compressor is a second adjustment angle;
if the difference value between the target operation frequency and the operation frequency is smaller than a first frequency difference value threshold value and larger than a second frequency difference value threshold value, determining that the angle adjustment amount of the flux weakening angle of the air-conditioning compressor is a third adjustment angle;
if the difference value between the target operation frequency and the operation frequency is smaller than a second frequency difference value threshold value, determining that the angle adjustment quantity of the flux weakening angle of the air-conditioning compressor is a fourth adjustment angle;
the fourth adjustment angle is smaller than the first adjustment angle, the first adjustment angle is smaller than the third adjustment angle, and the third adjustment angle is smaller than the second adjustment angle.
7. An air conditioner flux weakening angle control device, characterized by performing the control method of any one of claims 1 to 6, the device comprising:
the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for responding to the condition that an air conditioner enters a weak magnetic control mode, acquiring the operating frequency of an air conditioner compressor and monitoring the outdoor environment temperature of the air conditioner compressor in the operating process;
and the adjusting unit is used for adjusting the flux weakening angle of the air-conditioning compressor according to the operating frequency and the outdoor environment temperature.
8. The utility model provides an air conditioner field weakening angle controlling means which characterized in that includes:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to: the method for performing the flux weakening angle control of the air conditioner as claimed in any one of claims 1 to 6.
9. A storage medium having stored therein instructions, which when executed by a processor of a terminal, enable the terminal including the processor to execute the method of air conditioner flux weakening angle control according to any one of claims 1 to 6.
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