WO2022134856A1 - Procédé de commande de climatiseur, climatiseur et support de stockage - Google Patents

Procédé de commande de climatiseur, climatiseur et support de stockage Download PDF

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Publication number
WO2022134856A1
WO2022134856A1 PCT/CN2021/127352 CN2021127352W WO2022134856A1 WO 2022134856 A1 WO2022134856 A1 WO 2022134856A1 CN 2021127352 W CN2021127352 W CN 2021127352W WO 2022134856 A1 WO2022134856 A1 WO 2022134856A1
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WIPO (PCT)
Prior art keywords
air conditioner
factor correction
power factor
correction device
working mode
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PCT/CN2021/127352
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English (en)
Chinese (zh)
Inventor
唐劲添
霍兆镜
毕然
黄招彬
Original Assignee
广东美的制冷设备有限公司
美的集团股份有限公司
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Publication of WO2022134856A1 publication Critical patent/WO2022134856A1/fr

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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
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/70—Regulating power factor; Regulating reactive current or power
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters

Definitions

  • the present invention relates to the technical field of air conditioners, and in particular, to an air conditioner control method, an air conditioner and a storage medium.
  • Air conditioners are household appliances commonly used in people's daily life, and Power Factor Correction (PFC) is one of the important components of air conditioners, which is used to improve the power factor of the power grid and current harmonics.
  • PFC Power Factor Correction
  • the switching device It is an important component of the power factor correction device. Since the switching device needs to perform frequent switching operations during the operation of the power factor correction device, there will be a problem of loss of the switching device, which affects the working reliability of the air conditioner.
  • the embodiments of the present invention provide an air conditioner control method, an air conditioner and a storage medium, which can reduce the loss of switching devices and improve the working reliability of the air conditioner.
  • an embodiment of the present invention provides a control method for an air conditioner, the air conditioner is provided with a power factor correction device, and the control method for the air conditioner includes:
  • the operating frequency of the power factor correction device remains unchanged in the first operating mode, and the operating frequency of the power factor correction device changes with the change of the input voltage in the second operating mode.
  • the above air conditioner control method has at least the following beneficial effects: by acquiring the operating parameters of the air conditioner, the power factor correction device is controlled to switch between the first operating mode and the second operating mode according to the operating parameters, wherein in the first operating mode In the working mode, the working frequency of the power factor correction device remains unchanged. In the second working mode, the working frequency of the power factor correction device changes with the change of the input voltage. Therefore, it can be adjusted according to the operation of the air conditioner.
  • the parameter realizes the flexible control of the working frequency of the power factor correction device, and avoids the power factor correction device to keep running at a single working frequency, thereby reducing the loss of the switching device and improving the working reliability of the air conditioner.
  • the operating frequency of the power factor correction device in the second operating mode is higher than the operating frequency in the first operating mode.
  • the operating frequency of the power factor correction device in the second operating mode is higher than the operating frequency in the first operating mode, therefore, since the operating frequency in the first operating mode is higher than that in the second operating mode Low, even if the working frequency is kept unchanged under the first working mode, it will not make the operating frequency of the switching device too high and cause great loss; because the working frequency in the second working mode is higher than that in the first working mode Therefore, in the second working mode, the operating frequency of the power factor correction device changes with the change of the input voltage, which is beneficial to reduce the switching times of the switching devices in the power factor correction device, reduce the loss of the switching devices, and improve the working efficiency of the air conditioner. reliability.
  • the operating parameter includes an input current value of the air conditioner
  • the power factor correction device is controlled to switch between a first operating mode and a second operating mode according to the operating parameter, include:
  • the power factor correction device When the input current value is less than or equal to a preset current threshold value, the power factor correction device is controlled to switch to the first working mode.
  • the power factor correction device when the input current value is less than or equal to the preset current threshold value, and the air conditioner is in a light load state, the power factor correction device is controlled to switch to the first working mode, so that the power factor correction device works The frequency remains unchanged, which is beneficial to make the ripple current smaller, so that the input current can be reduced with the decrease of the input voltage, and the effect of reducing current harmonics can be achieved.
  • controlling the power factor correction device to switch between the first working mode and the second working mode according to the operating parameter further includes:
  • the power factor correction device is controlled to switch to the second working mode.
  • the power factor correction device when the input current value is greater than the preset current threshold value, and the air conditioner is in a heavy load state, the power factor correction device is controlled to switch to the second working mode, so that the working frequency of the power factor correction device is With the change of the input voltage, it is beneficial to reduce the switching times of the switching device in the power factor correction device, reduce the loss of the switching device, and improve the reliability of the air conditioner.
  • the operating parameter includes an input power value of the air conditioner
  • the power factor correction device is controlled to switch between a first operating mode and a second operating mode according to the operating parameter, include:
  • the power factor correction device When the input power value is less than or equal to a preset power threshold value, the power factor correction device is controlled to switch to the first working mode.
  • the power factor correction device when the input power value is less than or equal to the preset power threshold value, and the air conditioner is in a light load state, the power factor correction device is controlled to switch to the first working mode, so that the power factor correction device works The frequency remains unchanged, which is beneficial to make the ripple current smaller, so that the input current can be reduced with the decrease of the input voltage, and the effect of reducing current harmonics can be achieved.
  • controlling the power factor correction device to switch between the first working mode and the second working mode according to the operating parameter further includes:
  • the power factor correction device is controlled to switch to the second working mode.
  • the power factor correction device when the input power value is greater than the preset power threshold, and the air conditioner is in a heavy load state, the power factor correction device is controlled to switch to the second working mode, so that the working frequency of the power factor correction device is With the change of the input voltage, it is beneficial to reduce the switching times of the switching device in the power factor correction device, reduce the loss of the switching device, and improve the reliability of the air conditioner.
  • the air conditioner is further provided with a compressor
  • the operating parameters include an operating frequency of the compressor and a temperature value outside the space where the air conditioner is located, and the operating parameters are controlled according to the operating parameters.
  • the power factor correction device switches between the first working mode and the second working mode, including:
  • the air conditioner is controlled to switch between the first working mode and the second working mode according to the operating frequency of the compressor.
  • controlling the power factor correction device to switch to the first working mode is beneficial to reduce the ripple current , so that the input current decreases with the decrease of the input voltage to achieve the effect of reducing current harmonics.
  • the above method can control the power factor correction device in combination with the operating environment and operating state of the air conditioner, which is beneficial to improve the degree of refinement of the control.
  • the controlling the air conditioner to switch between the first working mode and the second working mode according to the operating frequency of the compressor includes:
  • the power factor correction device When the operating frequency of the compressor is less than or equal to a preset first frequency threshold, the power factor correction device is controlled to switch to a first working mode.
  • the air conditioner when the operating frequency of the compressor is less than or equal to the preset first frequency threshold, although the temperature outside the space where the air conditioner is located is relatively high, the air conditioner is still in a state of light load, and the control The power factor correction device is switched to the first working mode, so that the operating frequency of the power factor correction device remains unchanged, which is conducive to reducing the ripple current, so as to meet the input current and reduce the input voltage to reduce current harmonics. Effect.
  • controlling the air conditioner to switch between the first working mode and the second working mode according to the operating frequency of the compressor further includes:
  • the power factor correction device When the operating frequency of the compressor is greater than the first frequency threshold, the power factor correction device is controlled to switch to a second operating mode.
  • the power factor correction device when the operating frequency of the compressor is greater than the preset first frequency threshold, and the air conditioner is in a state of heavy load, the power factor correction device is controlled to switch to the second working mode, so that the power factor correction device
  • the operating frequency of the air conditioner changes with the change of the input voltage, which is beneficial to reduce the switching times of the switching device in the power factor correction device, reduce the loss of the switching device, and improve the reliability of the air conditioner.
  • the operating frequency of the power factor correction device is higher than a preset second frequency threshold.
  • the operating frequency of the power factor correction device is higher than the preset second frequency threshold, and the power factor correction device can be set at a higher operating frequency by setting the second frequency threshold, It is beneficial to improve the reduction effect of ripple current and further reduce the effect of harmonics.
  • an embodiment of the present invention also provides an air conditioner, including:
  • a controller connected to the power factor correction device, the controller is configured to acquire operating parameters of the air conditioner, and control the power factor correction device between the first working mode and the second working mode according to the operating parameters switching, wherein in the first operating mode, the operating frequency of the power factor correction device remains unchanged, and in the second operating mode, the operating frequency of the power factor correction device changes with the change of the input voltage .
  • the above air conditioner has at least the following beneficial effects: obtaining the operating parameters of the air conditioner through the controller, and controlling the power factor correction device to switch between the first working mode and the second working mode according to the operating parameters, wherein in the first working mode In the working mode, the working frequency of the power factor correction device remains unchanged. In the second working mode, the working frequency of the power factor correction device changes with the change of the input voltage. Therefore, it can be adjusted according to the operation of the air conditioner.
  • the parameter realizes the flexible control of the working frequency of the power factor correction device, and avoids the power factor correction device to keep running at a single working frequency, thereby reducing the loss of the switching device and improving the working reliability of the air conditioner.
  • an embodiment of the present invention further provides an air conditioner, including a memory and a processor, wherein the memory stores a computer program, and the processor implements the air conditioner control described in the first aspect when the processor executes the computer program method.
  • an embodiment of the present invention further provides a computer-readable storage medium, where the storage medium stores a program, and the program is executed by a processor to implement the air conditioner control method described in the first aspect.
  • FIG. 1 is a schematic structural diagram of an air conditioner provided by an embodiment of the present invention.
  • FIG. 2 is a flowchart of a method for controlling an air conditioner provided by an embodiment of the present invention
  • FIG. 3 is a flowchart of a specific example of an air conditioner control method provided by an embodiment of the present invention (the operating parameter is input current);
  • FIG. 4 is a flowchart of a specific example of an air conditioner control method provided by an embodiment of the present invention (the operating parameter is input power);
  • FIG. 5 is a flowchart of a specific example of an air conditioner control method provided by an embodiment of the present invention (the operating parameters are compressor operating frequency and outdoor temperature);
  • FIG. 6 is another schematic structural diagram of an air conditioner provided by an embodiment of the present invention.
  • multiple means two or more, greater than, less than, exceeding, etc., are understood as not including this number, and above, below, within, etc., are understood as including this number. If there is a description of "first”, “second”, etc., it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or implicitly indicating the indicated The sequence of technical characteristics.
  • the air conditioner 100 is a household appliance commonly used in people's daily life, and power factor correction (Power Factor Correction, PFC) is one of the important components of the air conditioner 100, which is used to improve the power factor of the power grid and the current harmonics.
  • PFC Power Factor Correction
  • the switching device is an important component of the power factor correction device 120 . Since the switching device needs to perform frequent switching operations during the operation of the power factor correction device 120 , there will be a problem of loss of the switching device, which affects the working reliability of the air conditioner 100 . .
  • the embodiments of the present invention provide a method for controlling the air conditioner 100 , the air conditioner 100 and a storage medium, which can reduce the loss of switching devices and improve the operational reliability of the air conditioner 100 .
  • Power factor correction device 120 used to improve the power factor of the power grid and current harmonics.
  • Common power factor correction device 120 is such as a boost PFC circuit. In some occasions with high efficiency requirements, a totem pole PFC circuit can also be used.
  • the switching device is an important component of the power factor correction device 120. The higher the operating frequency of the power factor correction device 120, the higher the switching frequency of the switching device, and the higher the loss of the switching device.
  • an embodiment of the present invention provides an air conditioner 100 for an air conditioner 100 provided by an embodiment of the present invention, including a power factor correction device 120 and a controller 100 , and the controller 100 is connected to the power factor correction device 120 , wherein , the controller 100 is used to obtain the operating parameters of the air conditioner 100, and control the power factor correction device 120 to switch between the first working mode and the second working mode according to the operating parameters, wherein in the first working mode, the power factor correction device The operating frequency of 120 remains unchanged, and the operating frequency of the power factor correction device 120 changes with the change of the input voltage in the second operating mode.
  • the above-mentioned air conditioner 100 obtains the operating parameters of the air conditioner 100 through the controller 100, and controls the power factor correction device 120 to switch between the first operating mode and the second operating mode according to the operating parameters, wherein in the first operating mode, the power The operating frequency of the factor correction device 120 remains unchanged. In the second operating mode, the operating frequency of the power factor correction device 120 changes with the change of the input voltage. Therefore, the power factor correction device 120 can be implemented according to the operating parameters of the air conditioner 100 .
  • the flexible control of the working frequency prevents the power factor correction device 120 from running at a single working frequency, thereby reducing the loss of switching devices and improving the working reliability of the air conditioner 100 .
  • the operating parameter of the air conditioner 100 may be the input current value of the air conditioner 100.
  • the air conditioner 100 may also be provided with a sampling circuit, the sampling circuit is connected to the controller 100, and the controller 100 can obtain the air conditioner 100 through the sampling circuit.
  • the input current value of and then, the controller 100 is specifically used to:
  • the power factor correction device 120 is controlled to switch to the first working mode.
  • the air conditioner 100 When the input current value is less than or equal to the preset current threshold, the air conditioner 100 is in a light load state, and the power factor correction device 120 is controlled to switch to the first working mode, so that the operating frequency of the power factor correction device 120 remains unchanged, It is beneficial to make the ripple current smaller, so that the input current can be reduced as the input voltage decreases, and the effect of reducing current harmonics can be achieved.
  • the first working mode that is, the power factor correction device 120 works with a fixed working frequency, according to It can be seen that under the condition that the output voltage U o and the inductance L of the power factor correction device 120 are constant, and the fixed operating frequency is used, the magnitude of the ripple current ⁇ I is proportional to the input voltage U in , because the input current value is less than or equal to the preset current threshold, that is, the effective value of the input current is small at this time, so when the operating frequency of the power factor correction device 120 is controlled to remain unchanged, the input current can be reduced following the decrease of the input voltage, so as to reduce the current The effect of harmonics.
  • controller 100 is also used to:
  • the power factor correction device 120 is controlled to switch to the second working mode.
  • the air conditioner 100 When the input current value is greater than the preset current threshold, the air conditioner 100 is in a heavy load state, and the power factor correction device 120 is controlled to switch to the second working mode, so that the operating frequency of the power factor correction device 120 follows the input voltage. It is beneficial to reduce the switching times of the switching device in the power factor correction device 120 , reduce the loss of the switching device, and improve the reliability of the air conditioner 100 .
  • the operating parameter of the air conditioner 100 can also be the input power value of the air conditioner 100.
  • the controller 100 can also be specifically used for:
  • the power factor correction device 120 is controlled to switch to the first working mode.
  • the power factor correction device 120 When the input power value is less than or equal to the preset power threshold, and the air conditioner 100 is in a light load state, the power factor correction device 120 is controlled to switch to the first working mode, so that the operating frequency of the power factor correction device 120 remains unchanged, It is beneficial to make the ripple power smaller, so that the input power can be reduced with the decrease of the input voltage, and the effect of reducing power harmonics can be achieved.
  • the operating parameter is the input current value
  • the preset power threshold value that is, the effective value of the input power is small at this time
  • the operating frequency of the power factor correction device 120 is controlled to remain constant. It can meet the requirement that the input current decreases with the decrease of the input voltage to achieve the effect of reducing power harmonics.
  • controller 100 is also used to:
  • the power factor correction device 120 is controlled to switch to the second working mode.
  • the air conditioner 100 When the input power value is greater than the preset power threshold, the air conditioner 100 is in a heavy load state, and the power factor correction device 120 is controlled to switch to the second working mode, so that the operating frequency of the power factor correction device 120 follows the input voltage. It is beneficial to reduce the switching times of the switching device in the power factor correction device 120 , reduce the loss of the switching device, and improve the reliability of the air conditioner 100 .
  • the operating parameter is the input current value
  • the switching times of the switching device are reduced in each mains cycle, and the switching times The reduction of the switching loss can reduce the heat generation of the switching device, effectively improve the reliability of the switching device, and improve the reliability of the operation of the air conditioner 100 .
  • the air conditioner 100 is further provided with a compressor, and the operating parameters of the air conditioner 100 may also be the operating frequency of the compressor of the air conditioner 100 and the temperature value outside the space where the air conditioner 100 is located.
  • the temperature value can be the outdoor temperature value
  • the operating frequency of the compressor is the rotational speed of the compressor
  • the outdoor temperature value can be obtained by using a temperature sensor, or the air conditioner 100 can also be connected to the Internet to obtain the outdoor temperature value through the server.
  • the controller 100 It can also be used specifically for:
  • the air conditioner 100 is controlled to switch between the first working mode and the second working mode according to the operating frequency of the compressor.
  • the air conditioner 100 When the temperature value is less than or equal to the preset temperature threshold, the air conditioner 100 is in a light load state, and the power factor correction device 120 is controlled to switch to the first working mode, which is beneficial to reduce the ripple current to meet the input current following The input voltage is reduced and reduced to achieve the effect of reducing current harmonics.
  • the air conditioner 100 When the temperature value is greater than the temperature threshold, the air conditioner 100 is in a heavy load state, and the air conditioner 100 is further controlled to switch between the first working mode and the second working mode according to the operating frequency of the compressor.
  • the above method can be combined with the air conditioner
  • the power factor correction device 120 is controlled according to the operating environment and operating state of the device 100 , which is beneficial to improve the refinement of the control.
  • controller 100 is used to control the air conditioner 100 to switch between the first working mode and the second working mode according to the operating frequency of the compressor, and specifically includes:
  • the power factor correction device 120 When the operating frequency of the compressor is less than or equal to the preset first frequency threshold, the power factor correction device 120 is controlled to switch to the first working mode.
  • the air conditioner 100 When the operating frequency of the compressor is less than or equal to the preset first frequency threshold, although the temperature outside the space where the air conditioner 100 is located is relatively high, the air conditioner 100 is still in a light load state, and the power factor correction device is controlled at this time. 120 switches to the first working mode, so that the working frequency of the power factor correction device 120 remains unchanged, which is beneficial to reduce the ripple current, so as to meet the input current reduction following the input voltage reduction, and achieve the effect of reducing current harmonics.
  • controller 100 is used to control the air conditioner 100 to switch between the first working mode and the second working mode according to the operating frequency of the compressor, and specifically further includes:
  • the power factor correction device 120 is controlled to switch to the second working mode.
  • the air conditioner 100 When the operating frequency of the compressor is greater than the preset first frequency threshold, the air conditioner 100 is in a heavy load state, and the power factor correction device 120 is controlled to switch to the second working mode, so that the operating frequency of the power factor correction device 120 increases with the
  • the change of the input voltage is beneficial to reduce the switching times of the switching device in the power factor correction device 120 , reduce the loss of the switching device, and improve the reliability of the air conditioner 100 .
  • temperature threshold and first frequency threshold may be set according to actual conditions, which are not limited in this embodiment of the present invention.
  • the power factor correction device 120 when the outdoor temperature value is less than 32 degrees, the power factor correction device 120 is controlled to work in the first working mode; when the outdoor temperature value is greater than 32 degrees and the operating frequency of the compressor is less than 60 Hz, the power factor correction device 120 is controlled to continue Keep working in the first working mode; when the outdoor temperature value is greater than 32 degrees and the operating frequency of the compressor is greater than 60 Hz, the power factor correction device 120 is controlled to switch to the second working mode.
  • the power factor correction device 120 when the outdoor temperature value is greater than 36 degrees and the operating frequency of the compressor is greater than 50 Hz, the power factor correction device 120 is controlled to switch to the second working mode, or when the outdoor temperature value is greater than 40 degrees and the compressor is running When the frequency is greater than 40 Hz, the power factor correction device 120 is controlled to switch to the second working mode, and so on. It can be seen that different operating frequencies of the compressors can be matched according to different outdoor temperature conditions, so as to improve the degree of refinement of the control and make the control more rational.
  • the operating frequency of the power factor correction device 120 in the second operating mode is higher than that in the first operating mode.
  • the operating frequency in the first operating mode is lower than that in the second operating mode, even if the operating frequency is kept unchanged in the first operating mode, the operating frequency of the switching device will not be too high to cause a large loss ; Since the working frequency in the second working mode is higher than that in the first working mode, the working frequency of the power factor correction device 120 in the second working mode changes with the change of the input voltage, which is beneficial to reduce the power factor correction device The switching times of the switching device in 120 is reduced, the loss of the switching device is reduced, and the working reliability of the air conditioner 100 is improved.
  • the operating frequency of the power factor correction device 120 is higher than the preset second frequency threshold. Therefore, the second frequency threshold can be set to make the power factor correction device 120 at a higher operating frequency. It is beneficial to improve the reduction effect of ripple current and further reduce the effect of harmonics.
  • the operating frequency of the power factor correction device 120 in the second operating mode is controlled to be higher than the operating frequency in the first operating mode
  • the operating frequency of the power factor correction device 120 in the first operating mode is controlled to be higher than the preset
  • the second frequency threshold value of the second frequency threshold the two control methods can be combined with each other, so that the operating frequency of the power factor correction device 120 in the first operating mode will not be too high, while reducing current harmonics, to a certain extent, reduce switching device loss.
  • an embodiment of the present invention further provides a method for controlling an air conditioner, including but not limited to the following steps 201 to 202:
  • Step 201 Obtain the operating parameters of the air conditioner
  • Step 202 control the power factor correction device to switch between the first working mode and the second working mode according to the operating parameters
  • step 202 the operating frequency of the power factor correction device in the first operating mode remains unchanged, and in the second operating mode, the operating frequency of the power factor correction device changes with the change of the input voltage
  • the power factor correction device is controlled to switch between the first operating mode and the second operating mode according to the operating parameters, wherein the operating frequency of the power factor correction device remains unchanged in the first operating mode , in the second working mode, the working frequency of the power factor correction device changes with the change of the input voltage. Therefore, the flexible control of the working frequency of the power factor correction device can be realized according to the operating parameters of the air conditioner, so as to avoid the power factor correction device being kept at
  • the utility model operates in the state of a single working frequency, thereby reducing the loss of the switching device and improving the working reliability of the air conditioner.
  • the operating parameter of the air conditioner may be the input current value of the air conditioner. Based on this, the above step 202 may specifically include:
  • the power factor correction device is controlled to switch to the first working mode.
  • the air conditioner When the input current value is less than or equal to the preset current threshold, the air conditioner is in a light load state, and the power factor correction device is controlled to switch to the first working mode, so that the operating frequency of the power factor correction device remains unchanged, which is conducive to making the The ripple current becomes smaller, so that the input current decreases with the decrease of the input voltage to achieve the effect of reducing current harmonics.
  • step 202 specifically further includes:
  • the power factor correction device is controlled to switch to the second working mode.
  • the air conditioner When the input current value is greater than the preset current threshold, the air conditioner is in a state of heavy load, and the power factor correction device is controlled to switch to the second working mode, so that the operating frequency of the power factor correction device changes with the change of the input voltage It is beneficial to reduce the switching times of the switching device in the power factor correction device, reduce the loss of the switching device, and improve the reliability of the air conditioner.
  • the operating parameter of the air conditioner can also be the input power value of the air conditioner.
  • the above step 202 can also specifically include:
  • the power factor correction device is controlled to switch to the first working mode.
  • the air conditioner When the input power value is less than or equal to the preset power threshold, the air conditioner is in a light load state, and the power factor correction device is controlled to switch to the first working mode, so that the operating frequency of the power factor correction device remains unchanged, which is conducive to making the The ripple power becomes smaller, so that the input power decreases with the decrease of the input voltage, so as to achieve the effect of reducing power harmonics.
  • the operating parameter is the input current value
  • the preset power threshold value that is, the effective value of the input power is small at this time
  • the operating frequency of the control power factor correction device remains unchanged. , can meet the input current to reduce with the decrease of input voltage, to achieve the effect of reducing power harmonics.
  • step 202 specifically further includes:
  • the power factor correction device is controlled to switch to the second working mode.
  • the air conditioner When the input power value is greater than the preset power threshold, the air conditioner is in a heavy load state, and the power factor correction device is controlled to switch to the second working mode, so that the operating frequency of the power factor correction device changes with the change of the input voltage It is beneficial to reduce the switching times of the switching device in the power factor correction device, reduce the loss of the switching device, and improve the reliability of the air conditioner.
  • the operating parameter is the input current value
  • the switching times of the switching device are reduced in each mains cycle, and the switching times are reduced.
  • the reduction can reduce the switching loss, thereby reducing the heat generation of the switching device, effectively improving the reliability of the switching device, and improving the reliability of the air conditioner.
  • the operating parameter can also be the operating frequency of the compressor of the air conditioner and the temperature value outside the space where the air conditioner is located, wherein the temperature value outside the space where the air conditioner is located can be the outdoor temperature value, and the operating frequency of the compressor is the compressor.
  • the outdoor temperature value can be obtained by using a temperature sensor, or the air conditioner can also be connected to the Internet, and the outdoor temperature value can be obtained through the server. Based on this, the above step 202 may also specifically include:
  • the air conditioner is controlled to switch between the first working mode and the second working mode according to the operating frequency of the compressor.
  • the air conditioner When the temperature value is less than or equal to the preset temperature threshold, the air conditioner is in a light load state, and the power factor correction device is controlled to switch to the first working mode, which is beneficial to reduce the ripple current to meet the input current to follow the input voltage Reduce and reduce to achieve the effect of reducing current harmonics.
  • the air conditioner When the temperature value is greater than the temperature threshold, the air conditioner is in a state of heavy load, and the air conditioner is further controlled to switch between the first working mode and the second working mode according to the operating frequency of the compressor.
  • the power factor correction device is controlled by the operating environment and operating state, which is conducive to improving the refinement of the control.
  • control of the air conditioner to switch between the first working mode and the second working mode according to the operating frequency of the compressor specifically includes:
  • the power factor correction device When the operating frequency of the compressor is less than or equal to the preset first frequency threshold, the power factor correction device is controlled to switch to the first working mode.
  • the air conditioner When the operating frequency of the compressor is less than or equal to the preset first frequency threshold, although the temperature outside the space where the air conditioner is located is relatively high, the air conditioner is still in a state of light load, and the power factor correction device is controlled to switch to The first working mode keeps the working frequency of the power factor correction device unchanged, which is beneficial to reduce the ripple current, so that the input current can be reduced with the decrease of the input voltage to achieve the effect of reducing current harmonics.
  • the above-mentioned controller is used to control the air conditioner to switch between the first working mode and the second working mode according to the operating frequency of the compressor, and specifically further includes:
  • the power factor correction device When the operating frequency of the compressor is greater than the first frequency threshold, the power factor correction device is controlled to switch to the second operating mode.
  • the air conditioner When the operating frequency of the compressor is greater than the preset first frequency threshold, the air conditioner is in a heavy load state, and the power factor correction device is controlled to switch to the second working mode, so that the operating frequency of the power factor correction device follows the input voltage. It is beneficial to reduce the switching times of the switching device in the power factor correction device, reduce the loss of the switching device, and improve the reliability of the air conditioner.
  • temperature threshold and first frequency threshold may be set according to actual conditions, which are not limited in this embodiment of the present invention.
  • the operating frequency of the power factor correction device in the second operating mode is higher than the operating frequency in the first operating mode.
  • the operating frequency in the first operating mode is lower than that in the second operating mode, even if the operating frequency is kept unchanged in the first operating mode, the operating frequency of the switching device will not be too high to cause a large loss ; Since the working frequency in the second working mode is higher than that in the first working mode, the working frequency of the power factor correction device in the second working mode changes with the change of the input voltage, which is beneficial to reduce the power factor correction device in the The switching times of the switching device are reduced, the loss of the switching device is reduced, and the reliability of the air conditioner operation is improved.
  • the operating frequency of the power factor correction device in the first working mode is higher than the preset second frequency threshold. Therefore, the power factor correction can be made by setting the second frequency threshold.
  • the device is at a higher operating frequency, which is conducive to improving the reduction effect of the ripple current and further reducing the effect of harmonics.
  • the operating frequency of the control power factor correction device in the second operating mode is higher than the operating frequency in the first operating mode, and the operating frequency of the power factor correction device in the first operating mode is controlled to be higher than the preset first operating frequency.
  • Two frequency thresholds, the two control methods can be combined with each other, so that the operating frequency of the power factor correction device in the first operating mode will not be too high, and the loss of switching devices can be reduced to a certain extent while reducing current harmonics. .
  • the above air conditioner control method may include the following steps 301 to 305:
  • Step 301 Turn on the power factor correction device
  • Step 302 Obtain the input current value of the air conditioner
  • Step 303 Determine whether the input current value is greater than the current threshold value, if yes, skip to step 304, otherwise skip to step 305;
  • Step 304 Control the power factor correction device to adjust the operating frequency according to the output voltage, and skip to Step 302;
  • Step 305 control the power factor correction device to run at a fixed operating frequency, and skip to step 302 .
  • the above air conditioner control method may include the following steps 401 to 405:
  • Step 401 Turn on the power factor correction device
  • Step 402 Obtain the input power value of the air conditioner
  • Step 403 Determine whether the input power value is greater than the power threshold, if so, skip to step 404, otherwise skip to step 405;
  • Step 404 Control the power factor correction device to adjust the operating frequency according to the output voltage, and skip to Step 402;
  • Step 405 control the power factor correction device to run at a fixed operating frequency, and skip to step 402 .
  • the above air conditioner control method may include the following steps 501 to 506:
  • Step 501 Turn on the power factor correction device
  • Step 502 Obtain the compressor operating frequency and outdoor temperature
  • Step 503 Determine whether the outdoor temperature is greater than the temperature threshold, if so, skip to step 504, otherwise skip to step 505;
  • Step 504 determine whether the compressor operating frequency is greater than the first frequency threshold, if so, skip to step 506, otherwise skip to step 505;
  • Step 505 control the power factor correction device to run at a fixed operating frequency, and skip to step 502;
  • Step 506 control the power factor correction device to adjust the operating frequency according to the output voltage, and skip to step 502 .
  • FIG. 6 shows an air conditioner 100 provided by an embodiment of the present invention.
  • the air conditioner 100 includes: a memory 601, a processor 602, and a computer program stored in the memory 601 and executable on the processor 602, and the computer program is used to execute the above air conditioner control method when running.
  • the processor 602 and the memory 601 may be connected by a bus or otherwise.
  • the memory 601 can be used to store non-transitory software programs and non-transitory computer-executable programs, such as the air conditioner control method described in the embodiments of the present invention.
  • the processor 602 implements the above air conditioner control method by running the non-transitory software programs and instructions stored in the memory 601 .
  • the memory 601 may include a storage program area and a storage data area, wherein the storage program area may store an operating system and an application program required for at least one function; the storage data area may store and execute the above-mentioned air conditioner control method. Additionally, memory 601 may include high-speed random access memory 601, and may also include non-transitory memory 601, such as at least one storage device storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory 601 may include memory 601 located remotely from the processor 602, and these remote memories 601 may be connected to the air conditioner 100 through a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.
  • the non-transitory software programs and instructions required to implement the above air conditioner control method are stored in the memory 601, and when executed by one or more processors 602, the above air conditioner control method is executed.
  • Embodiments of the present invention further provide a computer-readable storage medium storing computer-executable instructions, where the computer-executable instructions are used to execute the above air conditioner control method.
  • the computer-readable storage medium stores computer-executable instructions that are executed by one or more control processors, for example, by one of the processors 602 in the air conditioner 100 described above, which may
  • the above-mentioned processor 602 is caused to execute the above-mentioned air conditioner control method, for example, the method steps 201 to 202 in FIG. 2 , the method steps 301 to 305 in FIG. 3 , the method steps 401 to 405 in FIG. Method steps 501 to 506 .
  • Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, tapes, storage device storage or other magnetic storage devices, or Any other medium that can be used to store the desired information and that can be accessed by a computer.
  • communication media typically include computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and can include any information delivery media, as is well known to those of ordinary skill in the art .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Signal Processing (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
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  • Power Engineering (AREA)
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  • Air Conditioning Control Device (AREA)

Abstract

Procédé de commande de climatiseur, climatiseur et support de stockage. Le procédé de commande de climatiseur consiste : à acquérir des paramètres de fonctionnement d'un climatiseur (201) ; et à commander, en fonction des paramètres de fonctionnement, un appareil de correction de facteur de puissance pour la commutation entre un premier mode de travail et un second mode de travail (202), dans le premier mode de travail, la fréquence de travail de l'appareil de correction de facteur de puissance restant inchangée, et dans le second mode de travail, la fréquence de travail de l'appareil de correction de facteur de puissance changeant à mesure qu'une tension d'entrée change.
PCT/CN2021/127352 2020-12-24 2021-10-29 Procédé de commande de climatiseur, climatiseur et support de stockage WO2022134856A1 (fr)

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CN202011547656.7A CN114674070B (zh) 2020-12-24 2020-12-24 空调器控制方法、空调器及存储介质
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CN115682361B (zh) * 2022-11-16 2024-07-26 宁波奥克斯电气股份有限公司 一种空调器的控制方法、控制装置以及空调器

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CN101860194A (zh) * 2010-05-14 2010-10-13 北方工业大学 多模式功率因数校正器的实现方法及装置
US20120014148A1 (en) * 2010-07-16 2012-01-19 Qian Li Adaptive on-time control for power factor correction stage light load efficiency
CN102710157A (zh) * 2011-03-28 2012-10-03 旭丽电子(广州)有限公司 功率因数修正升压转换器及其切换频率调制方法
CN104137406A (zh) * 2012-06-20 2014-11-05 夏普株式会社 电源电路和具有该电源电路的空气调节机
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