Air conditioner variable frequency control method and device, storage medium and air conditioner

Abstract

The application discloses a kind of air conditioner variable frequency control method, device, storage medium and air conditioner, it is related to air conditioner technical field, the method includes: obtaining adaptive variable load frequency data, adaptive variable load frequency data includes multiple operating frequency intervals and respectively corresponding basic carrier frequency and carrier frequency upper and lower limit;Determine the actual operating frequency of variable frequency compressor corresponding target carrier frequency and target carrier frequency upper and lower limit;Based on target carrier frequency control the variable frequency compressor operates, and after operating predetermined length, according to external environment temperature, system pressure, intelligent power module temperature and electric control box temperature, within target carrier frequency upper and lower limit Calculate output carrier frequency, to control variable frequency compressor operates.The application can effectively reduce inverter power device switching loss and electromagnetic harmonic interference, and improve variable frequency compressor control performance, effectively improve air conditioning system reliability as a whole, improve user experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the air conditioning technical field, and in particular to an air conditioner variable frequency control method and device, a storage medium and an air conditioner. BACKGROUND

[0002] The variable frequency compressor in the air conditioner usually adopts variable frequency control technology. In the variable frequency control technology, the frequency converter is usually an "AC to DC to AC" circuit structure, and its working principle is that AC power passes through a rectifier filter circuit to obtain DC power, and then the DC power passes through an inverter circuit DC chopper system to modulate the output frequency of the AC power to drive the variable frequency compressor to operate.

[0003] However, the inverter power device switch (such as IGBT (Insulate-Gate Bipolar Transistor, Insulated Gate Bipolar Transistor)) frequency (i.e. PWM carrier frequency) of the inverter circuit DC chopper system in the frequency converter is fixed, so when the compressor operates at a lower operating frequency, the number of carriers in a single electrical cycle is large, the inverter power device switch loss and electromagnetic harmonic interference are large; when the compressor operates at a higher operating frequency, the number of carriers in a single electrical cycle is small, and the compressor carrier ratio is in an undesirable state, which causes the compressor control performance to decline.

[0004] The current control of the variable frequency compressor in the air conditioner has the problems of high inverter power device switch loss, large electromagnetic harmonic interference and poor compressor control performance, which leads to poor air conditioning system reliability and poor user experience. SUMMARY

[0005] The air conditioner variable frequency control scheme provided by the embodiments of the present application can effectively reduce the inverter power device switch loss and electromagnetic harmonic interference, improve the variable frequency compressor control performance, effectively improve the overall air conditioning system reliability, and improve the user experience.

[0006] The embodiments of the present application provide the following technical solutions:

[0007] According to one embodiment of the present application, a variable frequency control method of an air conditioner comprises: obtaining adaptive variable load frequency data, wherein the adaptive variable load frequency data comprises a plurality of operation frequency intervals, and a basic carrier frequency and a carrier frequency upper and lower limit corresponding to each of the operation frequency intervals; determining a basic carrier frequency and a carrier frequency upper and lower limit corresponding to an operation frequency interval in which an actual operation frequency of a variable frequency compressor is located, to obtain a target carrier frequency and a target carrier frequency upper and lower limit; controlling the variable frequency compressor to operate based on the target carrier frequency, and obtaining an external environment temperature, a system pressure, an intelligent power module temperature and an electric control box temperature after the variable frequency compressor operates for a predetermined time length; and calculating an output carrier frequency within the target carrier frequency upper and lower limit based on the external environment temperature, the system pressure, the intelligent power module temperature and the electric control box temperature, to control the variable frequency compressor to operate.

[0008] In some embodiments of the present application, the external environment temperature and the output carrier frequency are in a positive regulation relationship, and the system pressure and the output carrier frequency are in a positive regulation relationship; the intelligent power module temperature and the output carrier frequency are in a negative regulation relationship, and the electric control box temperature and the output carrier frequency are in a negative regulation relationship.

[0009] In some embodiments of the present application, the calculation of the output carrier frequency within the target carrier frequency upper and lower limit based on the external environment temperature, the system pressure, the intelligent power module temperature and the electric control box temperature to control the variable frequency compressor to operate comprises: calculating a current first output value based on the external environment temperature, an external ring temperature control base and an external ring temperature regulation weight coefficient, superimposing the current first output value with a historical first output value to obtain an external ring temperature regulation output value; calculating a current second output value based on the system pressure, a system pressure control base and a system pressure regulation weight coefficient, superimposing the current second output value with a historical second output value to obtain a system pressure regulation output value; calculating a current third output value based on the intelligent power module temperature, a power module temperature control base and a power module temperature regulation weight coefficient, superimposing the current third output value with a historical third output value to obtain an intelligent power module temperature regulation output value; calculating a current fourth output value based on the electric control box temperature, an electric control box temperature control base and an electric control box temperature regulation weight coefficient, superimposing the current fourth output value with a historical fourth output value to obtain an electric control box temperature regulation output value; summing the external ring temperature regulation output value and the system pressure regulation output value, subtracting the intelligent power module temperature regulation output value and the electric control box temperature regulation output value to obtain a current output carrier frequency, and superimposing the current output carrier frequency with a historical output carrier frequency to obtain the output carrier frequency.

[0010] In some embodiments of the present application, the current first output value is calculated according to the external environment temperature, the outer ring temperature control base and the outer ring temperature adjustment weight coefficient, and is superimposed with the historical first output value to obtain the outer ring temperature adjustment output value, including: according to the formula the current first output value is calculated for the nth time and is superimposed with the historical first output value of the previous n-1 times to obtain the outer ring temperature adjustment output value, wherein Fw represents the outer ring temperature adjustment output value, Tw represents the external environment temperature, Twb represents the outer ring temperature control base, Kw represents the outer ring temperature adjustment weight coefficient, and k represents the kth time before the nth time.

[0011] In some embodiments of the present application, the current second output value is calculated according to the system pressure, the system pressure control base and the system pressure adjustment weight coefficient, and is superimposed with the historical second output value to obtain the system pressure adjustment output value, including: according to the formula the current second output value is calculated for the nth time and is superimposed with the historical second output value of the previous n-1 times to obtain the system pressure adjustment output value, wherein Fp represents the system pressure adjustment output value, P represents the system pressure, Pb represents the system pressure control base, Kp represents the system pressure adjustment weight coefficient, and k represents the kth time before the nth time.

[0012] In some embodiments of the present application, the current third output value is calculated according to the intelligent power module temperature, the power module temperature control base and the power module temperature adjustment weight coefficient, and is superimposed with the historical third output value to obtain the intelligent power module temperature adjustment output value, including: according to the formula the current third output value is calculated for the nth time and is superimposed with the historical third output value of the previous n-1 times to obtain the intelligent power module temperature adjustment output value, wherein Fipm represents the intelligent power module temperature adjustment output value, Tipm represents the intelligent power module temperature, Tipmb represents the power module temperature control base, Kipm represents the power module temperature adjustment weight coefficient, and k represents the kth time before the nth time.

[0013] In some embodiments of the present application, the current fourth output value is calculated according to the electric control box temperature, the electric control box temperature control base and the electric control box temperature adjustment weight coefficient, and is superimposed with the historical fourth output value to obtain the electric control box temperature adjustment output value, including: according to the formula the current fourth output value is calculated for the nth time and is superimposed with the historical fourth output value of the previous n-1 times to obtain the electric control box temperature adjustment output value, wherein Fbox represents the electric control box temperature adjustment output value, Tbox represents the electric control box temperature, Tboxb represents the electric control box temperature control base, Kbox represents the electric control box temperature adjustment weight coefficient, and k represents the kth time before the nth time.

[0014] According to one embodiment of the present application, a variable frequency control device of an air conditioner comprises: an acquisition module configured to acquire adaptive variable load frequency data, wherein the adaptive variable load frequency data comprises a plurality of running frequency intervals, and a basic carrier frequency and a carrier frequency upper and lower limit corresponding to each of the running frequency intervals; a determination module configured to determine a basic carrier frequency and a carrier frequency upper and lower limit corresponding to a running frequency interval in which an actual running frequency of a variable frequency compressor is located, to obtain a target carrier frequency and a target carrier frequency upper and lower limit; a driving module configured to control the variable frequency compressor to run based on the target carrier frequency, and to acquire an external environment temperature, a system pressure, an intelligent power module temperature and an electric control box temperature after the variable frequency compressor runs for a predetermined time length; and a calculation module configured to calculate an output carrier frequency within the target carrier frequency upper and lower limit according to the external environment temperature, the system pressure, the intelligent power module temperature and the electric control box temperature, to control the variable frequency compressor to run.

[0015] According to another embodiment of the present application, a storage medium has a computer program stored thereon, and when the computer program is executed by a processor of an air conditioner, the air conditioner performs the method according to the embodiments of the present application.

[0016] According to another embodiment of the present application, an air conditioner can comprise: a memory configured to store a computer program; and a processor configured to read the computer program stored in the memory, to perform the method according to the embodiments of the present application.

[0017] According to another embodiment of the present application, a computer program product or a computer program comprises computer instructions stored in a computer readable storage medium. A processor of an air conditioner reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions, so that the air conditioner performs the method provided in various optional implementation manners according to the embodiments of the present application.

[0018] In the embodiments of the present application, adaptive variable load frequency data is acquired, wherein the adaptive variable load frequency data comprises a plurality of running frequency intervals, and a basic carrier frequency and a carrier frequency upper and lower limit corresponding to each of the running frequency intervals; a basic carrier frequency and a carrier frequency upper and lower limit corresponding to a running frequency interval in which an actual running frequency of a variable frequency compressor is located are determined, to obtain a target carrier frequency and a target carrier frequency upper and lower limit; the variable frequency compressor is controlled to run based on the target carrier frequency, and an external environment temperature, a system pressure, an intelligent power module temperature and an electric control box temperature are acquired after the variable frequency compressor runs for a predetermined time length; and an output carrier frequency is calculated within the target carrier frequency upper and lower limit according to the external environment temperature, the system pressure, the intelligent power module temperature and the electric control box temperature, to control the variable frequency compressor to run.

[0019] With the air conditioner variable frequency control mode of the embodiment of the present application, a dynamic self-optimizing variable carrier frequency variable frequency drive control mode is realized, which can effectively drive the compressor to operate according to the actual operating frequency of the compressor and the related operating conditions in the air conditioner to adaptively adjust the carrier frequency, effectively reduce the switching loss and electromagnetic harmonic interference of the inverter power device, improve the control performance of the variable frequency compressor, and effectively improve the reliability of the air conditioner system and the user experience as a whole. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 A flowchart of an air conditioner variable frequency control method according to an embodiment of the present application is shown.

[0022] Figure 2 An output carrier frequency calculation flowchart according to an embodiment of the present application is shown.

[0023] Figure 3 A block diagram of an air conditioner variable frequency control device according to an embodiment of the present application is shown.

[0024] Figure 4 A block diagram of an air conditioner according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0025] The present disclosure will be further described in detail below with reference to the drawings and embodiments. It should be understood that the embodiments provided herein are only used to explain the present disclosure and do not limit the present disclosure. In addition, the embodiments provided below are used to implement some embodiments of the present disclosure, and the technical solutions described in the embodiments of the present disclosure can be implemented in any combination without conflict.

[0026] It should be noted that in the embodiments of the present disclosure, the terms "comprise", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the method or device comprising a series of elements not only includes the elements explicitly described, but also includes other elements not explicitly listed or inherent to the method or device. Without more limitations, the element defined by the sentence "comprises a" does not exclude the presence of other related elements (such as steps in the method or units in the device, for example, the unit can be part of the circuit, part of the processor, part of the program or software, etc.) in the method or device comprising the element.

[0027] For example, the air conditioner variable frequency control method provided by the embodiments of the present disclosure includes a series of steps, but the air conditioner variable frequency control method provided by the embodiments of the present disclosure is not limited to the steps described, and similarly, the air conditioner variable frequency control device provided by the embodiments of the present disclosure includes a series of units, but the device provided by the embodiments of the present disclosure is not limited to including the units explicitly described, and can also include units that need to be set when obtaining relevant information or processing based on information.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present disclosure belongs. The terminology used in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure.

[0029] It can be understood that in the specific embodiments of the present application, relevant data is involved, and when the embodiments in the present application are applied to specific products or technologies, the permission or consent of the user needs to be obtained, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of countries and regions.

[0030] Figure 1 A flowchart of an air conditioner variable frequency control method according to an embodiment of the present application is schematically shown. The execution subject of the air conditioner variable frequency control method can be any air conditioner with processing capability.

[0031] As shown in Figure 1 The air conditioner variable frequency control method can include steps S110 to S140.

[0032] Step S110, adaptive variable load frequency data is obtained, the adaptive variable load frequency data includes a plurality of operating frequency intervals and the basic carrier frequency and the upper and lower limits of the carrier frequency corresponding to each operating frequency interval;

[0033] Step S120, the basic carrier frequency and the upper and lower limits of the carrier frequency corresponding to the operating frequency interval where the actual operating frequency of the variable frequency compressor is located are determined, and the target carrier frequency and the target carrier frequency upper and lower limits are obtained;

[0034] Step S130, based on the target carrier frequency, the variable frequency compressor is controlled to operate, and after the variable frequency compressor operates for a predetermined length of time, the external environment temperature, system pressure, intelligent power module temperature and electric control box temperature are obtained;

[0035] Step S140, according to the external environment temperature, system pressure, intelligent power module temperature and electric control box temperature, the output carrier frequency is calculated within the target carrier frequency upper and lower limits to control the variable frequency compressor to operate.

[0036] The adaptive variable carrier frequency data is preset data, and the adaptive variable carrier frequency data includes a plurality of operating frequency intervals and a basic carrier frequency and a carrier frequency upper and lower limit corresponding to each operating frequency interval. For example, as shown in the following table, the adaptive variable carrier frequency data includes different operating frequency intervals [F1, F2], [F3, F4], etc., the basic carrier frequency corresponding to the operating frequency interval [F1, F2] is Fz1, and the carrier frequency upper and lower limit corresponding to the operating frequency interval [F1, F2] is [Fmax1, Fmin1].

[0037]

[0038] Wherein, the operating frequency refers to the operating frequency of the compressor, the carrier frequency refers to the carrier frequency of the inverter circuit direct current chopper system in the frequency converter, and the basic carrier frequency and the carrier frequency upper and lower limit corresponding to each operating frequency interval can be the optimal selection corresponding to each operating frequency interval obtained by experimental test in advance.

[0039] The variable frequency compressor can determine its actual operating frequency during operation, determine the operating frequency interval in which the actual operating frequency is located, and determine the basic carrier frequency and the carrier frequency upper and lower limit corresponding to the operating frequency interval in which the actual operating frequency is located as the target carrier frequency and the target carrier frequency upper and lower limit. Whenever the actual operating frequency of the variable frequency compressor changes to a different operating frequency interval, the target carrier frequency and the target carrier frequency upper and lower limit can be determined.

[0040] The variable frequency compressor is controlled based on the target carrier frequency, and after the variable frequency compressor operates for a predetermined time length, the external environment temperature, the system pressure, the intelligent power module temperature and the temperature of the electric control box of the air conditioner are obtained. The predetermined time length can be set according to the actual situation. The variable frequency compressor is controlled based on the target carrier frequency, and specifically, the inverter circuit direct current chopper system in the frequency converter samples the target carrier frequency to modulate the output of alternating current to drive the variable frequency compressor to operate.

[0041] The external environment temperature can be the temperature of the environment space (such as indoor temperature) where the air conditioner is located. The system pressure can be the related pressure of the compressor in the air conditioner system (such as the compressor suction pressure or the compressor discharge pressure, etc.). The intelligent power module temperature refers to the temperature of the intelligent power module (IPM: Intelligent Power Module). The temperature of the electric control box refers to the temperature of the electric control box.

[0042] Further, according to the external environment temperature, system pressure, intelligent power module temperature and electric control box temperature, the output carrier frequency is calculated within the upper and lower limits of the target carrier frequency, so as to further control the operation of the variable frequency compressor according to the output carrier frequency, and the output carrier frequency can be limited within the upper and lower limits of the target carrier frequency. Specifically, according to the external environment temperature, system pressure, intelligent power module temperature and electric control box temperature, an output value can be calculated, if the output value is greater than or equal to the lower limit value of the upper and lower limits of the target carrier frequency and less than or equal to the upper limit value of the upper and lower limits of the target carrier frequency, the output value is the output carrier frequency; if the output value is less than the lower limit value of the upper and lower limits of the target carrier frequency, the lower limit value is the output carrier frequency; if the output value is greater than the upper limit value of the upper and lower limits of the target carrier frequency, the upper limit value is the output carrier frequency. Thus, the output carrier frequency can be limited within the upper and lower limits of the target carrier frequency.

[0043] Overall, the air conditioner variable frequency control method of the embodiment of the application realizes a dynamic self-optimizing variable carrier frequency variable frequency drive control method, which can effectively adjust the carrier frequency according to the actual operating frequency of the compressor and the related operating conditions in the air conditioner to drive the compressor to operate, effectively reduce the switching loss and electromagnetic harmonic interference of the inverter power device, and improve the control performance of the variable frequency compressor. Overall, the reliability of the air conditioning system is effectively improved, and the user experience is improved.

[0044] The following describes Figure 1 When the air conditioner variable frequency control is performed in the embodiment, further optional specific embodiments of each step are performed.

[0045] In one embodiment, the external environment temperature and the output carrier frequency have a positive regulation relationship, and the system pressure and the output carrier frequency have a positive regulation relationship; the intelligent power module temperature and the output carrier frequency have a negative regulation relationship, and the electric control box temperature and the output carrier frequency have a negative regulation relationship.

[0046] The external environment temperature and the output carrier frequency have a positive regulation relationship, and the system pressure and the output carrier frequency have a positive regulation relationship, that is, the output carrier frequency increases when the external environment temperature and the system pressure rise; the intelligent power module temperature and the output carrier frequency have a negative regulation relationship, and the electric control box temperature and the output carrier frequency have a negative regulation relationship, that is, the output carrier frequency decreases when the intelligent power module temperature and the electric control box temperature rise. In this way, the variable frequency drive reliability of the output carrier frequency for the compressor can be effectively guaranteed.

[0047] Further, in one embodiment, referring to Figure 2 , the output carrier frequency is calculated within the upper and lower limits of the target carrier frequency according to the external environment temperature, system pressure, intelligent power module temperature and electric control box temperature, so as to control the operation of the variable frequency compressor, which can specifically include:

[0048] In step S210, a current first output value is calculated according to the ambient temperature, the ambient temperature control base and the ambient temperature adjustment weight coefficient, and is superimposed with a historical first output value to obtain an ambient temperature adjustment output value.

[0049] In step S220, a current second output value is calculated according to the system pressure, the system pressure control base and the system pressure adjustment weight coefficient, and is superimposed with a historical second output value to obtain a system pressure adjustment output value.

[0050] In step S230, a current third output value is calculated according to the intelligent power module temperature, the power module temperature control base and the power module temperature adjustment weight coefficient, and is superimposed with a historical third output value to obtain an intelligent power module temperature adjustment output value.

[0051] In step S240, a current fourth output value is calculated according to the electric control box temperature, the electric control box temperature control base and the electric control box temperature adjustment weight coefficient, and is superimposed with a historical fourth output value to obtain an electric control box temperature adjustment output value.

[0052] In step S250, the ambient temperature adjustment output value and the system pressure adjustment output value are summed, and the intelligent power module temperature adjustment output value and the electric control box temperature adjustment output value are subtracted to obtain a current output carrier frequency, which is superimposed with a historical output carrier frequency to obtain the output carrier frequency.

[0053] Each time the actual operating frequency of the variable frequency compressor changes to a different operating frequency interval, the ambient temperature, the system pressure, the intelligent power module temperature and the electric control box temperature of the current time are triggered to obtain the output carrier frequency within the target carrier frequency upper and lower limits.

[0054] Each time, the current first output value is calculated according to the ambient temperature of the current time and the preset ambient temperature control base and ambient temperature adjustment weight coefficient, and the current first output value is superimposed with the historical first output value calculated before to obtain the ambient temperature adjustment output value of the current time.

[0055] Each time, the current second output value is calculated according to the system pressure of the current time and the preset system pressure control base and system pressure adjustment weight coefficient, and the current second output value is superimposed with the historical second output value to obtain the system pressure adjustment output value of the current time.

[0056] Each time, the current third output value is calculated according to the intelligent power module temperature of the current time and the preset power module temperature control base and power module temperature adjustment weight coefficient, and the current third output value is superimposed with the historical third output value to obtain the intelligent power module temperature adjustment output value.

[0057] Each time, the current fourth output value is obtained according to the current time electrical cabinet temperature, the preset electrical cabinet temperature control base and the electrical cabinet temperature adjustment weight coefficient, and the current fourth output value is superimposed with the historical fourth output value to obtain the electrical cabinet temperature adjustment output value.

[0058] Finally, the outer ring temperature adjustment output value and the system pressure adjustment output value are summed, and the intelligent power module temperature adjustment output value and the electrical cabinet temperature adjustment output value are subtracted to obtain the current output carrier frequency, and the historical output carrier frequency is superimposed to obtain the final output carrier frequency, so that the reliability of the output carrier frequency for the variable frequency drive control of the compressor can be further effectively ensured.

[0059] For example, the nth output carrier frequency Foutn can be obtained based on the formula Foutn=Fout(m)+Fw+Fp-Fipm-Fbox, wherein Fw refers to the outer ring temperature adjustment output value, Fp refers to the system pressure adjustment output value, Fipm refers to the intelligent power module temperature adjustment output value, Fbox refers to the electrical cabinet temperature adjustment output value, and Fout(m) refers to the historical output carrier frequency calculated before the nth time.

[0060] Further, in an embodiment, the calculation of the current first output value according to the outer environment temperature, the outer ring temperature control base and the outer ring temperature adjustment weight coefficient and the superimposition of the historical first output value to obtain the outer ring temperature adjustment output value can include:

[0061] According to the formula The nth current first output value is calculated and superimposed with the historical first output value of the previous n-1 times to obtain the outer ring temperature adjustment output value, wherein Fw refers to the outer ring temperature adjustment output value, Tw refers to the outer environment temperature, Twb refers to the outer ring temperature control base, Kw refers to the outer ring temperature adjustment weight coefficient, and k refers to the kth time before the nth time.

[0062] According to the formula, the nth current first output value (Tw-Twb)*Kw can be calculated, and the historical first output value (Tw-Twb)*Kw of the previous n-1 times (k=0 to k=n-1 times) is superimposed to obtain the outer ring temperature adjustment output value Fw, which can be reliably used for adaptive optimization to obtain the output carrier frequency.

[0063] Further, in an embodiment, the calculation of the current second output value according to the system pressure, the system pressure control base and the system pressure adjustment weight coefficient and the superimposition of the historical second output value to obtain the system pressure adjustment output value can include:

[0064] According to the formula The current second output value of the nth time is calculated and superimposed with the historical second output values of the previous n-1 times to obtain a system pressure regulating output value, wherein Fp represents the system pressure regulating output value, P represents the system pressure, Pb represents the system pressure control base, Kp represents the system pressure regulating weight coefficient, and k represents the kth time before the nth time.

[0065] According to the formula, the current second output value (P-Pb)*Kp of the nth time can be calculated, and the system pressure regulating output value Fp can be obtained by superimposing the historical second output values (P-Pb)*Kp of the previous n-1 times (k=0 to k=n-1 times). According to the system pressure regulating output value Fp, the output carrier frequency can be reliably obtained by adaptive optimization.

[0066] Further, in an embodiment, the current third output value is calculated according to the intelligent power module temperature, the power module temperature control base, and the power module temperature regulating weight coefficient, and the historical third output value is superimposed to obtain an intelligent power module temperature regulating output value, which can include:

[0067] According to the formula The current third output value of the nth time is calculated and superimposed with the historical third output values of the previous n-1 times to obtain an intelligent power module temperature regulating output value, wherein Fipm represents the intelligent power module temperature regulating output value, Tipm represents the intelligent power module temperature, Tipmb represents the power module temperature control base, Kipm represents the power module temperature regulating weight coefficient, and k represents the kth time before the nth time.

[0068] According to the formula, the current third output value (Tipm-Tipmb)*Kipm of the nth time can be calculated, and the intelligent power module temperature regulating output value Fipm can be obtained by superimposing the historical third output values (Tipm-Tipmb)*Kipm of the previous n-1 times (k=0 to k=n-1 times). According to the intelligent power module temperature regulating output value Fipm, the output carrier frequency can be reliably obtained by adaptive optimization.

[0069] Further, in an embodiment, the current fourth output value is calculated according to the electric control box temperature, the electric control box temperature control base, and the electric control box temperature regulating weight coefficient, and the historical fourth output value is superimposed to obtain an electric control box temperature regulating output value, which can include:

[0070] According to the formula The current fourth output value of the nth time is calculated and superimposed with the historical fourth output values of the previous n-1 times to obtain an electric control box temperature regulating output value, wherein Fbox represents the electric control box temperature regulating output value, Tbox represents the electric control box temperature, Tboxb represents the electric control box temperature control base, Kbox represents the electric control box temperature regulating weight coefficient, and k represents the kth time before the nth time.

[0071] According to the formula, the current fourth output value of the nth time (Tbox-Tboxb)*Kbox can be calculated, and the historical fourth output value of the previous n-1 times (k=0 to k=n-1 times) (Tbox-Tboxb)*Kbox is superimposed to obtain the electric cabinet temperature adjustment output value Fbox, and the electric cabinet temperature adjustment output value Fbox can be reliably used for adaptive optimization to obtain the output carrier frequency.

[0072] To facilitate better implementation of the air conditioner variable frequency control method provided in the embodiments of the present application, the embodiments of the present application further provide an air conditioner variable frequency control device based on the above-mentioned air conditioner variable frequency control method. The meanings of the terms are the same as those in the above-mentioned air conditioner variable frequency control method, and the specific implementation details can be referred to the description in the method embodiments. Figure 3 A block diagram of an air conditioner variable frequency control device according to an embodiment of the present application is shown.

[0073] As shown in Figure 3 The air conditioner variable frequency control device 300 can include: an acquisition module 310, which can be configured to acquire adaptive variable carrier frequency data, wherein the adaptive variable carrier frequency data includes a plurality of running frequency intervals, and a basic carrier frequency and a carrier frequency upper and lower limit corresponding to each running frequency interval; a determination module 320, which can be configured to determine the basic carrier frequency and the carrier frequency upper and lower limit corresponding to the running frequency interval in which the actual running frequency of the variable frequency compressor is located, to obtain a target carrier frequency and a target carrier frequency upper and lower limit; a driving module 330, which can be configured to control the variable frequency compressor to run based on the target carrier frequency, and to acquire an external environment temperature, a system pressure, an intelligent power module temperature and an electric cabinet temperature after the variable frequency compressor runs for a predetermined length of time; and a calculation module 340, which can be configured to calculate an output carrier frequency within the target carrier frequency upper and lower limit according to the external environment temperature, the system pressure, the intelligent power module temperature and the electric cabinet temperature, to control the variable frequency compressor to run.

[0074] In some embodiments of the present application, the external environment temperature and the output carrier frequency have a positive regulation relationship, and the system pressure and the output carrier frequency have a positive regulation relationship; the intelligent power module temperature and the output carrier frequency have a negative regulation relationship, and the electric cabinet temperature and the output carrier frequency have a negative regulation relationship.

[0075] In some embodiments of this application, the calculation module 340 can be used to: calculate a current first output value based on the ambient temperature, the outer ring temperature control base, and the outer ring temperature adjustment weight coefficient, and then superimpose it with a historical first output value to obtain an outer ring temperature adjustment output value; calculate a current second output value based on the system pressure, the system pressure control base, and the system pressure adjustment weight coefficient, and then superimpose it with a historical second output value to obtain a system pressure adjustment output value; calculate a current third output value based on the intelligent power module temperature, the power module temperature control base, and the power module temperature adjustment weight coefficient, and then superimpose it with a historical third output value to obtain an intelligent power module temperature adjustment output value; calculate a current fourth output value based on the electrical control box temperature, the electrical control box temperature control base, and the electrical control box temperature adjustment weight coefficient, and then superimpose it with a historical fourth output value to obtain an electrical control box temperature adjustment output value; sum the outer ring temperature adjustment output value and the system pressure adjustment output value, and subtract the intelligent power module temperature adjustment output value and the electrical control box temperature adjustment output value to obtain the current output carrier frequency, and then superimpose it with a historical output carrier frequency to obtain the output carrier frequency.

[0076] In some embodiments of this application, the calculation module 340 can be used to: calculate according to the formula The current first output value of the nth time is calculated and superimposed with the historical first output values ​​of the previous n-1 times to obtain the outer loop temperature regulation output value. Here, Fw refers to the outer loop temperature regulation output value, Tw refers to the external ambient temperature, Twb refers to the outer loop temperature control base, Kw refers to the outer loop temperature regulation weight coefficient, and k refers to the kth time before the nth time.

[0077] In some embodiments of this application, the calculation module 340 can be used to: calculate according to the formula The current second output value of the nth time is calculated and superimposed with the historical second output values ​​of the previous n-1 times to obtain the system pressure regulation output value, where Fp refers to the system pressure regulation output value, P refers to the system pressure, Pb refers to the system pressure control base, Kp refers to the system pressure regulation weight coefficient, and k refers to the kth time before the nth time.

[0078] In some embodiments of this application, the calculation module 340 can be used to: calculate according to the formula The current third output value of the nth time is calculated and superimposed with the historical third output values ​​of the previous n-1 times to obtain the intelligent power module temperature regulation output value. Here, Fipm refers to the intelligent power module temperature regulation output value, Tipm refers to the intelligent power module temperature, Tipmb refers to the power module temperature control base, Kipm refers to the power module temperature regulation weight coefficient, and k refers to the kth time before the nth time.

[0079] In some embodiments of this application, the calculation module 340 can be used to: calculate according to the formula The current fourth output value of the nth time is calculated and superimposed with the historical fourth output values ​​of the previous n-1 times to obtain the temperature adjustment output value of the electrical control box. Here, Fbox refers to the temperature adjustment output value of the electrical control box, Tbox refers to the temperature of the electrical control box, Tboxb refers to the temperature control base of the electrical control box, Kbox refers to the temperature adjustment weight coefficient of the electrical control box, and k refers to the kth time before the nth time.

[0080] It should be noted that although several modules or units for the device used to perform actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to the embodiments of this application, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0081] Furthermore, embodiments of this application also provide an air conditioner, such as... Figure 4 As shown, Figure 4 A block diagram of an air conditioner according to an embodiment of this application is shown, specifically:

[0082] The air conditioner may include components such as a processor 401 with one or more processing cores, a memory 402 with one or more computer-readable storage media, and a power supply 403. Those skilled in the art will understand that... Figure 4 The air conditioner structure shown does not constitute a limitation on the air conditioner and may include more or fewer components than shown, or combine certain components, or have different component arrangements. Wherein:

[0083] The processor 401 is the control center of the air conditioner. It connects to various parts of the computer device via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 402, and by calling data stored in the memory 402, it performs various functions of the computer device and processes data, thereby providing overall monitoring of the air conditioner. Optionally, the processor 401 may include one or more processing cores; preferably, the processor 401 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user page, and application programs, and the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 401.

[0084] The memory 402 can be used to store software programs and modules, and the processor 401 can execute various functions and data processing by running the software programs and modules stored in the memory 402. The memory 402 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, application programs required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; and the data storage area can store data created according to the use of the computer device, etc. In addition, the memory 402 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state memory device. Accordingly, the memory 402 can also include a memory controller to provide the processor 401 with access to the memory 402.

[0085] The air conditioner also includes a power supply 403 for supplying power to various components. Preferably, the power supply 403 can be logically connected to the processor 401 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. The power supply 403 can also include one or more than one direct current or alternating current power supply, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and any other components.

[0086] Although not shown, the air conditioner can also include a display unit, etc., which will not be described here. In particular, in the present embodiment, the processor 401 in the air conditioner will load executable files corresponding to the processes of one or more than one computer program into the memory 402 according to the following instructions, and run the computer programs stored in the memory 402 by the processor 401, so as to realize various functions in the foregoing embodiments of the present application.

[0087] The processor 401 can execute the following steps: obtaining adaptive variable-frequency data, wherein the adaptive variable-frequency data includes a plurality of running frequency intervals and a basic carrier frequency and a carrier frequency upper and lower limit corresponding to each of the running frequency intervals; determining a basic carrier frequency and a carrier frequency upper and lower limit corresponding to a running frequency interval in which an actual running frequency of a variable-frequency compressor is located, to obtain a target carrier frequency and a target carrier frequency upper and lower limit; controlling the variable-frequency compressor to run based on the target carrier frequency, and after the variable-frequency compressor runs for a predetermined length of time, obtaining an external environment temperature, a system pressure, an intelligent power module temperature, and an electric control box temperature; calculating an output carrier frequency within the target carrier frequency upper and lower limit according to the external environment temperature, the system pressure, the intelligent power module temperature, and the electric control box temperature, to control the variable-frequency compressor to run.

[0088] Those skilled in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by a computer program, or by a computer program controlling relevant hardware, which can be stored in a computer readable storage medium and loaded and executed by a processor.

[0089] To this end, the embodiments of the present application further provide a storage medium, which stores a computer program capable of being loaded by a processor to execute the steps in any of the methods provided by the embodiments of the present application.

[0090] The storage medium can be a computer readable storage medium, which can include a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, etc.

[0091] Since the computer program stored in the storage medium can execute the steps in any of the methods provided by the embodiments of the present application, the beneficial effects of the methods provided by the embodiments of the present application can be achieved, which are described in detail in the foregoing embodiments and will not be described here.

[0092] Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. The present application is intended to cover any variations, uses or adaptations of this application following, in general, the principles of the application and including such

[0093] It should be understood that the application is not limited to the embodiments already described and shown in the drawings, but that various modifications and changes can be made without departing from the scope of the application.

Claims

1. A variable frequency control method for an air conditioner, characterized by, The method comprises the following steps: acquiring adaptive variable-frequency data, wherein the adaptive variable-frequency data comprises a plurality of running frequency intervals, and a basic carrier frequency and a carrier frequency upper and lower limit corresponding to each running frequency interval; determining a basic carrier frequency and a carrier frequency upper and lower limit corresponding to a running frequency interval in which an actual running frequency of a variable-frequency compressor is located, to obtain a target carrier frequency and a target carrier frequency upper and lower limit; controlling the variable-frequency compressor to run based on the target carrier frequency, and acquiring an external environment temperature, a system pressure, an intelligent power module temperature and an electric control box temperature after the variable-frequency compressor runs for a predetermined time length, wherein the external environment temperature refers to a temperature of an environment space in which the air conditioner is located; calculating an output carrier frequency within the target carrier frequency upper and lower limit based on the external environment temperature, the system pressure, the intelligent power module temperature and the electric control box temperature, to control the variable-frequency compressor to run; and calculating a current first output value based on the external environment temperature, an external ring temperature control base and an external ring temperature adjustment weight coefficient, superimposing the current first output value with a historical first output value, and obtaining an external ring temperature adjustment output value; calculating a current second output value based on the system pressure, a system pressure control base and a system pressure adjustment weight coefficient, superimposing the current second output value with a historical second output value, and obtaining a system pressure adjustment output value; calculating a current third output value based on the intelligent power module temperature, a power module temperature control base and a power module temperature adjustment weight coefficient, superimposing the current third output value with a historical third output value, and obtaining an intelligent power module temperature adjustment output value; calculating a current fourth output value based on the electric control box temperature, an electric control box temperature control base and an electric control box temperature adjustment weight coefficient, superimposing the current fourth output value with a historical fourth output value, and obtaining an electric control box temperature adjustment output value; summing the external ring temperature adjustment output value and the system pressure adjustment output value, subtracting the intelligent power module temperature adjustment output value and the electric control box temperature adjustment output value to obtain a current output carrier frequency, and superimposing the current output carrier frequency with a historical output carrier frequency to obtain the output carrier frequency.

2. The method of claim 1, wherein, The external environment temperature and the output carrier frequency have a positive adjustment relationship, the system pressure and the output carrier frequency have a positive adjustment relationship, the intelligent power module temperature and the output carrier frequency have a negative adjustment relationship, and the electric control box temperature and the output carrier frequency have a negative adjustment relationship.

3. The method of claim 1, wherein, The method of calculating a current first output value based on the external environment temperature, an external ring temperature control base and an external ring temperature adjustment weight coefficient, superimposing the current first output value with a historical first output value, and obtaining an external ring temperature adjustment output value comprises the following steps: According to the formula Fw = Fw * (1 - k) + Fw * k The current first output value of the nth time is calculated and superimposed with the historical first output value of the previous n-1 times to obtain an outer ring temperature regulation output value, wherein Fw represents the outer ring temperature regulation output value, represents the outer environment temperature, represents the outer ring temperature control base, represents the outer ring temperature regulation weight coefficient, and k represents the kth time before the nth time.

4. The method of claim 1, wherein, The method of calculating a current second output value based on the system pressure, a system pressure control base and a system pressure adjustment weight coefficient, superimposing the current second output value with a historical second output value, and obtaining a system pressure adjustment output value comprises the following steps: According to the formula Fp = Fp-1 + Fp-2 +... + Fp-n The current second output value of the nth time is calculated and superimposed with the historical second output values of the previous n-1 times to obtain the system pressure regulation output value, wherein Fp represents the system pressure regulation output value, represents the system pressure, represents the system pressure control base, represents the system pressure regulation weight coefficient, and k represents the kth time before the nth time.

5. The method of claim 1, wherein, The method of calculating a current third output value based on the intelligent power module temperature, a power module temperature control base and a power module temperature adjustment weight coefficient, superimposing the current third output value with a historical third output value, and obtaining an intelligent power module temperature adjustment output value comprises the following steps: According to the formula = The current third output value of the nth time is calculated and superimposed with the historical third output value of the previous n-1 times to obtain an intelligent power module temperature regulation output value, wherein, denotes the intelligent power module temperature regulation output value, denotes the intelligent power module temperature, denotes the power module temperature control base, denotes the power module temperature regulation weight coefficient, and k denotes the kth time before the nth time.

6. The method of claim 1, wherein, The current fourth output value is obtained according to the electric control box temperature, the electric control box temperature control base and the electric control box temperature adjustment weight coefficient, and is superimposed with the historical fourth output value to obtain the electric control box temperature adjustment output value, comprising: According to the formula = The current fourth output value of the nth time is calculated and superimposed with the historical fourth output value of the previous n-1 times to obtain the electric control box temperature regulation output value, wherein, denotes the electric control box temperature regulation output value, denotes the electric control box temperature, denotes the electric control box temperature control base, denotes the electric control box temperature regulation weight coefficient, and k denotes the kth time before the nth time.

7. An air conditioner variable frequency control device, characterized by, Including: The acquisition module is used for acquiring adaptive variable load frequency data, wherein the adaptive variable load frequency data includes a plurality of running frequency intervals, and a basic carrier frequency and a carrier frequency upper and lower limit corresponding to each running frequency interval; The determination module is used for determining the basic carrier frequency and the carrier frequency upper and lower limit corresponding to the running frequency interval where the actual running frequency of the variable frequency compressor is located to obtain a target carrier frequency and a target carrier frequency upper and lower limit; The driving module is used for controlling the variable frequency compressor to run based on the target carrier frequency, and acquiring an external environment temperature, a system pressure, an intelligent power module temperature and an electric control box temperature after the variable frequency compressor runs for a predetermined time length, wherein the external environment temperature refers to the temperature of an environment space where the air conditioner is located; The calculation module is used for calculating an output carrier frequency within the target carrier frequency upper and lower limit according to the external environment temperature, the system pressure, the intelligent power module temperature and the electric control box temperature to control the variable frequency compressor to run; a current first output value is obtained according to the external environment temperature, an external ring temperature control base and an external ring temperature adjustment weight coefficient, and is superimposed with a historical first output value to obtain an external ring temperature adjustment output value; A current second output value is obtained according to the system pressure, a system pressure control base and a system pressure adjustment weight coefficient, and is superimposed with a historical second output value to obtain a system pressure adjustment output value; a current third output value is obtained according to the intelligent power module temperature, a power module temperature control base and a power module temperature adjustment weight coefficient, and is superimposed with a historical third output value to obtain an intelligent power module temperature adjustment output value; A current fourth output value is obtained according to the electric control box temperature, an electric control box temperature control base and an electric control box temperature adjustment weight coefficient, and is superimposed with a historical fourth output value to obtain an electric control box temperature adjustment output value; The external ring temperature adjustment output value and the system pressure adjustment output value are summed, and the intelligent power module temperature adjustment output value and the electric control box temperature adjustment output value are subtracted to obtain a current output carrier frequency, and are superimposed with a historical output carrier frequency to obtain the output carrier frequency.

8. A storage medium, characterized by The computer program is stored on the memory, and when the computer program is executed by the processor of the air conditioner, the air conditioner executes the method of any one of claims 1 to 6.

9. An air conditioner characterized by comprising: Including: The memory stores the computer program; The processor reads the computer program stored in the memory to execute the method of any one of claims 1 to 6.

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