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

Abstract

The invention discloses an air conditioner frequency conversion control method and device, a storage medium and an air conditioner, and relates to the technical field of air conditioners, the method comprises the steps that self-adaptive variable carrier frequency data are obtained, and the self-adaptive variable carrier frequency data comprise a plurality of operation frequency intervals, basic carrier frequencies corresponding to the operation frequency intervals and carrier frequency upper and lower limits; determining a target carrier frequency corresponding to the actual operation frequency of the inverter compressor and upper and lower limits of the target carrier frequency; and controlling the inverter compressor to operate based on the target carrier frequency, and calculating an output carrier frequency within the upper and lower limits of the target carrier frequency according to the external environment temperature, the system pressure, the temperature of the intelligent power module and the temperature of the electric cabinet after the inverter compressor operates for a preset time so as to control the inverter compressor to operate. Switching loss of power devices of the inverter and electromagnetic harmonic interference can be effectively reduced, the control performance of the inverter compressor is improved, the reliability of the air conditioning system is effectively improved on the whole, and user experience is improved.

Description

Technical Field

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

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

[0003] However, the switching frequency (i.e., PWM carrier frequency) of the inverter power device (such as IGBT (Insulate-Gate Bipolar Transistor)) of the inverter circuit DC chopper system in the inverter is fixed. Therefore, when the compressor operates at a lower operating frequency, the number of carriers in a single electrical cycle is large, and the switching loss and electromagnetic harmonic interference of the inverter power device 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 reduces the compressor control performance.

[0004] The control of variable frequency compressors in current air conditioners has problems such as high switching losses of inverter power devices, large electromagnetic harmonic interference, and poor compressor control performance, resulting in poor reliability of the air conditioning system and poor user experience. Summary of the invention

[0005] The embodiment of the present application provides an air-conditioning variable frequency control solution, which can effectively reduce the switching loss of inverter power devices and electromagnetic harmonic interference, and improve the control performance of the variable frequency compressor, thereby effectively improving the reliability of the air-conditioning system as a whole and improving 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 for an air conditioner includes: obtaining adaptive variable carrier frequency data, wherein the adaptive variable carrier frequency data includes multiple operating frequency intervals and basic carrier frequencies and upper and lower limits of carrier frequencies corresponding to each of the operating frequency intervals; determining the basic carrier frequency and upper and lower limits of carrier frequencies corresponding to the operating frequency interval in which the actual operating frequency of the variable frequency compressor is located, and obtaining a target carrier frequency and upper and lower limits of target carrier frequencies; controlling the operation of the variable frequency compressor based on the target carrier frequency, and obtaining the external ambient temperature, system pressure, intelligent power module temperature and electric control box temperature after the variable frequency compressor has been running for a predetermined period of time; and calculating the output carrier frequency within the upper and lower limits of the target carrier frequency according to the external ambient temperature, system pressure, intelligent power module temperature and electric control box temperature to control the operation of the variable frequency compressor.

[0008] 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 control box temperature and the output carrier frequency have a negative regulation relationship.

[0009] In some embodiments of the present application, the output carrier frequency is calculated within the upper and lower limits of the target carrier frequency according to the external ambient temperature, system pressure, intelligent power module temperature and electric control box temperature to control the operation of the variable frequency compressor, including: calculating the current first output value according to the external ambient temperature, the outer ring temperature control base and the outer ring temperature adjustment weight coefficient and superimposing it with the historical first output value to obtain the outer ring temperature adjustment output value; calculating the current second output value according to the system pressure, the system pressure control base and the system pressure adjustment weight coefficient and superimposing it with the historical second output value to obtain the system pressure adjustment output value; calculating the current second output value according to the system pressure, the system pressure control base and the system pressure adjustment weight coefficient and superimposing it with the historical second output value to obtain the system pressure adjustment output value; calculating the current second output value according to the intelligent power module temperature , the power module temperature control base and the power module temperature adjustment weight coefficient are used to calculate the current third output value and superimpose it with the historical third output value to obtain the intelligent power module temperature adjustment output value; according to the electric control box temperature, the electric control box temperature control base and the electric control box temperature adjustment weight coefficient, the current fourth output value is calculated and superimposed with the historical fourth output value to obtain the electric control box temperature adjustment output value; the outer loop 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 the current output carrier frequency, and superimposed with the 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 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 of the nth time is calculated and superimposed with the historical first output value of the previous n-1 times to obtain the outer loop temperature adjustment output value, wherein Fw refers to the outer loop temperature adjustment 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 adjustment weight coefficient, and k refers to 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 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 of the nth time is calculated and superimposed with the historical second output value of the previous n-1 times to obtain the system pressure regulation output value, wherein 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.

[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 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 of the nth time is calculated and 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 refers to the intelligent power module temperature adjustment 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 adjustment weight coefficient, and k refers to 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 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 of the nth time is calculated and superimposed with the historical fourth output value of the previous n-1 times to obtain the temperature adjustment output value of the electric control box, wherein Fbox refers to the temperature adjustment output value of the electric control box, Tbox refers to the temperature of the electric control box, Tboxb refers to the temperature control base of the electric control box, Kbox refers to the temperature adjustment weight coefficient of the electric control box, and k refers to the kth time before the nth time.

[0014] According to one embodiment of the present application, an air-conditioning variable frequency control device, the device comprising: an acquisition module, used to: acquire adaptive variable carrier frequency data, the adaptive variable carrier frequency data comprising a plurality of operating frequency intervals and a basic carrier frequency and an upper and lower limit of the carrier frequency corresponding to each of the operating frequency intervals; a determination module, used to: determine 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, and obtain a target carrier frequency and the upper and lower limits of the target carrier frequency; a driving module, used to: control the operation of the variable frequency compressor based on the target carrier frequency, and obtain the external environment temperature, system pressure, intelligent power module temperature and electric control box temperature after the variable frequency compressor has been running for a predetermined period of time; a calculation module, used to: calculate the output carrier frequency 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.

[0015] According to another embodiment of the present application, a storage medium stores a computer program thereon, and when the computer program is executed by a processor of an air conditioner, the air conditioner executes the method described in the embodiment of the present application.

[0016] According to another embodiment of the present application, an air conditioner may include: a memory storing a computer program; and a processor reading the computer program stored in the memory to execute the method described in the embodiment of the present application.

[0017] According to another embodiment of the present application, a computer program product or a computer program includes 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 executes the method provided in various optional implementations described in the embodiments of the present application.

[0018] In an embodiment of the present application, adaptive variable carrier frequency data is obtained, wherein the adaptive variable carrier frequency data includes a plurality of operating frequency intervals and a basic carrier frequency and an upper and lower limit of the carrier frequency corresponding to each of the operating frequency intervals; the basic carrier frequency and the upper and lower limits of the carrier frequency corresponding to the operating frequency interval in which the actual operating frequency of the variable frequency compressor is located are determined to obtain a target carrier frequency and target upper and lower limits of the carrier frequency; the operation of the variable frequency compressor is controlled based on the target carrier frequency, and after the variable frequency compressor has been running for a predetermined period of time, the external ambient temperature, the system pressure, the intelligent power module temperature and the electric control box temperature are obtained; and the output carrier frequency is calculated within the upper and lower limits of the target carrier frequency according to the external ambient temperature, the system pressure, the intelligent power module temperature and the electric control box temperature to control the operation of the variable frequency compressor.

[0019] With the air-conditioning variable frequency control method of the embodiment of the present application, a variable frequency drive control method that dynamically self-searches for the optimal carrier frequency is realized. The carrier frequency can be adaptively adjusted according to the actual operating frequency of the compressor and the relevant operating conditions in the air conditioner to drive the compressor to operate, effectively reducing the switching loss of the inverter power device and the electromagnetic harmonic interference, and improving the control performance of the variable frequency compressor, which effectively improves the reliability of the air-conditioning system as a whole and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

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

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

[0023] Figure 3 A block diagram of an air conditioner frequency conversion 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 is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments provided herein are only used to explain the present disclosure and are not intended to limit the present disclosure. In addition, the embodiments provided below are partial embodiments for implementing the present disclosure, rather than providing all embodiments for implementing the present disclosure. In the absence of conflict, the technical solutions recorded in the embodiments of the present disclosure can be implemented in any combination.

[0026] It should be noted that, in the embodiments of the present disclosure, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a method or apparatus including a series of elements includes not only the elements explicitly recorded, but also includes other elements not explicitly listed, or also includes elements inherent to the implementation of the method or apparatus. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other related elements in the method or apparatus including the element (such as a step in the method or a unit in the apparatus, for example, a unit may be a part of a circuit, a part of a processor, a part of a program or software, etc.).

[0027] For example, the air conditioner variable frequency control method provided in the embodiment of the present disclosure includes a series of steps, but the air conditioner variable frequency control method provided in the embodiment of the present disclosure is not limited to the recorded steps. Similarly, the air conditioner variable frequency control device provided in the embodiment of the present disclosure includes a series of units, but the device provided in the embodiment of the present disclosure is not limited to including the units explicitly recorded, and may also include units required to obtain relevant information or perform processing based on information.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present disclosure belongs. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0029] It is understandable that in the specific implementation of this application, relevant data is involved. When the embodiments in this application are applied to specific products or technologies, user permission or consent is required, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions.

[0030] Figure 1 The flowchart of the air conditioner variable frequency control method according to one 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] like Figure 1 As shown, the air conditioner variable frequency control method may include steps S110 to S140.

[0032] Step S110, obtaining adaptive variable carrier frequency data, wherein the adaptive variable carrier frequency data includes a plurality of operating frequency intervals and a basic carrier frequency and an upper and lower limit of the carrier frequency corresponding to each of the operating frequency intervals;

[0033] Step S120, determining 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, and obtaining the target carrier frequency and the upper and lower limits of the target carrier frequency;

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

[0035] Step S140, calculating the output carrier frequency 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.

[0036] The adaptive variable carrier frequency data is preset data, and the adaptive variable carrier frequency data includes multiple operating frequency intervals and the basic carrier frequency and the upper and lower limits of the carrier frequency 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 upper and lower limits of the carrier frequency corresponding to the operating frequency interval [F1, F2] are [Fmax1, Fmin1].

[0037]

[0038] Among them, the operating frequency refers to the operating frequency of the compressor, the carrier frequency refers to the carrier frequency of the DC chopper system of the inverter circuit in the inverter, and the basic carrier frequency corresponding to each operating frequency interval and the upper and lower limits of the carrier frequency can be the optimal selection corresponding to each operating frequency interval obtained in advance based on experimental tests.

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

[0040] The operation of the variable frequency compressor is controlled based on the target carrier frequency, and after the variable frequency compressor has been running for a predetermined time, the external environment temperature, system pressure, intelligent power module temperature and electric control box temperature of the air conditioner are obtained. The predetermined time can be set according to actual conditions. The operation of the variable frequency compressor is controlled based on the target carrier frequency, and specifically, the DC chopper system of the inverter circuit in the inverter samples the target carrier frequency to modulate the output AC power to drive the variable frequency compressor to operate.

[0041] The external environment temperature can be the temperature of the environment space where the air conditioner is located (for example, the indoor temperature). The system pressure can be the relevant pressure of the compressor in the air conditioning system (for example, the compressor suction pressure or the compressor exhaust pressure, etc.). The intelligent power module temperature refers to the temperature of the intelligent power module (IPM). The electric control box temperature refers to the temperature of the electric control box.

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

[0043] On the whole, the air-conditioning variable frequency control method of the embodiment of the present application realizes a variable frequency drive control method that dynamically self-seeks the optimal carrier frequency. It can effectively adaptively adjust the carrier frequency according to the actual operating frequency of the compressor and the relevant operating conditions in the air conditioner to drive the compressor to operate, effectively reduce the switching loss of the inverter power device and the electromagnetic harmonic interference, and improve the control performance of the variable frequency compressor, which effectively improves the reliability of the air-conditioning system as a whole and improves the user experience.

[0044] Described below Figure 1 When the air conditioner frequency conversion control is performed under the embodiment, further optional specific embodiments are provided under each step performed.

[0045] In one embodiment, 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.

[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, when the external environment temperature and the system pressure rise, the output carrier frequency increases; 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, when the intelligent power module temperature and the electric control box temperature rise, the output carrier frequency decreases. This can effectively ensure the reliability of the output carrier frequency for the variable frequency drive of the compressor.

[0047] Further, in one embodiment, see 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 to control the operation of the variable frequency compressor, which may specifically include:

[0048] Step S210, calculating the current first output value according to the external environment temperature, the outer ring temperature control base and the outer ring temperature adjustment weight coefficient and superimposing it with the historical first output value to obtain the outer ring temperature adjustment output value;

[0049] Step S220, calculating the current second output value according to the system pressure, the system pressure control base and the system pressure adjustment weight coefficient and superimposing it with the historical second output value to obtain the system pressure adjustment output value;

[0050] Step S230, calculating the current third output value according to the intelligent power module temperature, the power module temperature control base and the power module temperature adjustment weight coefficient, and superimposing the current third output value with the historical third output value to obtain the intelligent power module temperature adjustment output value;

[0051] Step S240, calculating the current fourth output value according to the electric control box temperature, the electric control box temperature control base and the electric control box temperature adjustment weight coefficient and superimposing it with the historical fourth output value to obtain the electric control box temperature adjustment output value;

[0052] Step S250, summing the outer ring temperature regulation output value and the system pressure regulation output value, and subtracting the intelligent power module temperature regulation output value and the electric control box temperature regulation output value to obtain the current output carrier frequency, and superimposing it with the 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 range, it will trigger a process to obtain the current external ambient temperature, system pressure, intelligent power module temperature and electric control box temperature, and calculate the output carrier frequency within the upper and lower limits of the target carrier frequency.

[0054] Each time, the current first output value is calculated based on the current external environment temperature and the preset external loop temperature control base and external loop temperature adjustment weight coefficient, and the current first output value is superimposed with the historical first output value calculated previously to obtain the current external loop temperature adjustment output value.

[0055] Each time, the current second output value is calculated based on the current system pressure 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 current system pressure adjustment output value.

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

[0058] Finally, the outer loop temperature regulation output value and the system pressure regulation output value are summed, and the temperature regulation output value of the intelligent power module and the temperature regulation output value of the electric control box are subtracted to obtain the current output carrier frequency, which is then superimposed with the historical output carrier frequency to obtain the final output carrier frequency. This can further effectively ensure the reliability of the output carrier frequency for the variable frequency drive control of the compressor.

[0059] For example, the nth output carrier frequency Foutn can be obtained based on the formula Foutn=Fout(m)+Fw+Fp-Fipm-Fbox, where Fw refers to the outer ring temperature regulation output value, Fp refers to the system pressure regulation output value, Fipm refers to the intelligent power module temperature regulation output value, Fbox refers to the electric control box temperature regulation output value, and Fout(m) is the historical output carrier frequency of multiple calculations before the nth time.

[0060] Further, in one embodiment, the calculating according to the external environment temperature, the external loop temperature control base and the external loop temperature adjustment weight coefficient to obtain the current first output value and superimposing it with the historical first output value to obtain the external loop temperature adjustment output value may include:

[0061] According to the formula 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 the outer loop temperature adjustment output value, wherein Fw refers to the outer loop temperature adjustment 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 adjustment weight coefficient, and k refers to the kth time before the nth time.

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

[0063] Furthermore, in one embodiment, 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 superimposed with the historical second output value to obtain the system pressure adjustment output value, which may include:

[0064] According to the formula The current second output value of the nth time is calculated and superimposed with the historical second output value of the previous n-1 times to obtain the system pressure regulation output value, wherein 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.

[0065] According to this formula, the current second output value (P-Pb)*Kp of the nth time can be calculated and superimposed with the historical second output value (P-Pb)*Kp of the previous n-1 times (k=0 to k=n-1 times) to obtain the system pressure regulation output value Fp. The system pressure regulation output value Fp can be reliably used for adaptive optimization to obtain the output carrier frequency.

[0066] Further, in one embodiment, the calculating according to the intelligent power module temperature, the power module temperature control base and the power module temperature adjustment weight coefficient to obtain the current third output value and superimposing it with the historical third output value to obtain the intelligent power module temperature adjustment output value may include:

[0067] 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 the intelligent power module temperature adjustment output value, wherein Fipm refers to the intelligent power module temperature adjustment 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 adjustment weight coefficient, and k refers to 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 superimposed with the historical third output value (Tipm-Tipmb)*Kipm of the previous n-1 times (k=0 to k=n-1 times) to obtain the intelligent power module temperature adjustment output value Fipm. The intelligent power module temperature adjustment output value Fipm can be reliably used for adaptive optimization to obtain the output carrier frequency.

[0069] Further, in one 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 adjustment weight coefficient and superimposed with the historical fourth output value to obtain the electric control box temperature adjustment output value, which may include:

[0070] 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 temperature adjustment output value of the electric control box, wherein Fbox refers to the temperature adjustment output value of the electric control box, Tbox refers to the temperature of the electric control box, Tboxb refers to the temperature control base of the electric control box, Kbox refers to the temperature adjustment weight coefficient of the electric control box, and k refers to the kth time before the nth time.

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

[0072] In order to facilitate better implementation of the air conditioner variable frequency control method provided in the embodiment of the present application, the embodiment of the present application also provides an air conditioner variable frequency control device based on the air conditioner variable frequency control method. The meanings of the terms are the same as those in the air conditioner variable frequency control method, and the specific implementation details can refer to the description in the method embodiment. Figure 3 A block diagram of an air conditioner frequency conversion control device according to an embodiment of the present application is shown.

[0073] like Figure 3 As shown, the air-conditioning variable frequency control device 300 may include: an acquisition module 310 may be used to: acquire adaptive variable carrier frequency data, wherein the adaptive variable carrier frequency data includes multiple operating frequency intervals and the basic carrier frequency and the upper and lower limits of the carrier frequency corresponding to each of the operating frequency intervals; a determination module 320 may be used to: determine 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, and obtain the target carrier frequency and the upper and lower limits of the target carrier frequency; a driving module 330 may be used to: control the operation of the variable frequency compressor based on the target carrier frequency, and obtain the external environment temperature, system pressure, intelligent power module temperature and electric control box temperature after the variable frequency compressor has been running for a predetermined period of time; a calculation module 340 may be used to: calculate the output carrier frequency 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.

[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 control box temperature and the output carrier frequency have a negative regulation relationship.

[0075] In some embodiments of the present application, the calculation module 340 can be used to: calculate the current first output value according to the external environment temperature, the outer loop temperature control base and the outer loop temperature adjustment weight coefficient, and superimpose it with the historical first output value to obtain the outer loop temperature adjustment output value; calculate the current second output value according to the system pressure, the system pressure control base and the system pressure adjustment weight coefficient, and superimpose it with the historical second output value to obtain the system pressure adjustment output value; calculate the current third output value according to the intelligent power module temperature, the power module temperature control base and the power module temperature adjustment weight coefficient, and superimpose it with the historical third output value to obtain the intelligent power module temperature adjustment output value; calculate the current fourth output value according to the electric control box temperature, the electric control box temperature control base and the electric control box temperature adjustment weight coefficient, and superimpose it with the historical fourth output value to obtain the electric control box temperature adjustment output value; sum the outer loop temperature adjustment output value and the system pressure adjustment output value, and subtract the intelligent power module temperature adjustment output value and the electric control box temperature adjustment output value to obtain the current output carrier frequency, and superimpose it with the historical output carrier frequency to obtain the output carrier frequency.

[0076] In some embodiments of the present application, the calculation module 340 may be used to: 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 the outer loop temperature adjustment output value, wherein Fw refers to the outer loop temperature adjustment 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 adjustment weight coefficient, and k refers to the kth time before the nth time.

[0077] In some embodiments of the present application, the calculation module 340 may be used to: The current second output value of the nth time is calculated and superimposed with the historical second output value of the previous n-1 times to obtain the system pressure regulation output value, wherein 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 the present application, the calculation module 340 may be used to: 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 the intelligent power module temperature adjustment output value, wherein Fipm refers to the intelligent power module temperature adjustment 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 adjustment weight coefficient, and k refers to the kth time before the nth time.

[0079] In some embodiments of the present application, the calculation module 340 may be used to: 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 temperature adjustment output value of the electric control box, wherein Fbox refers to the temperature adjustment output value of the electric control box, Tbox refers to the temperature of the electric control box, Tboxb refers to the temperature control base of the electric control box, Kbox refers to the temperature adjustment weight coefficient of the electric control box, and k refers to the kth time before the nth time.

[0080] It should be noted that, although several modules or units of the equipment for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiments of the present application, the features and functions of two or more modules or units described above can be embodied in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into being embodied by multiple modules or units.

[0081] In addition, the present application also provides an air conditioner, such as Figure 4 As shown, Figure 4 A block diagram of an air conditioner according to an embodiment of the present application is shown, specifically:

[0082] The air conditioner may include one or more processing core processors 401, one or more computer-readable storage media memories 402, power supplies 403 and other components. Those skilled in the art will appreciate that Figure 4 The air conditioner structure shown in the figure does not constitute a limitation on the air conditioner, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently. Among them:

[0083] The processor 401 is the control center of the air conditioner. It uses various interfaces and lines to connect various parts of the entire computer device. By running or executing software programs and / or modules stored in the memory 402, and calling data stored in the memory 402, it executes various functions of the computer device and processes data, thereby monitoring the air conditioner as a whole. 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 processes the operating system, user pages and application programs, etc., and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 401.

[0084] The memory 402 can be used to store software programs and modules. The processor 401 executes various functional applications and data processing by running the software programs and modules stored in the memory 402. The memory 402 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the computer device, etc. In addition, the memory 402 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the memory 402 may 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 any components such as one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, and power status indicators.

[0086] Although not shown, the air conditioner may also include a display unit, etc., which will not be described in detail herein. Specifically in this embodiment, the processor 401 in the air conditioner will load the executable files corresponding to the processes of one or more computer programs into the memory 402 according to the following instructions, and the processor 401 will run the computer programs stored in the memory 402, thereby realizing various functions in the aforementioned embodiments of the present application.

[0087] For example, the processor 401 may execute the following steps: obtaining adaptive variable carrier frequency data, wherein the adaptive variable carrier frequency data includes a plurality of operating frequency intervals and a basic carrier frequency and an upper and lower limit of the carrier frequency corresponding to each of the operating frequency intervals; determining the basic carrier frequency and the upper and lower limits of the carrier frequency corresponding to the operating frequency interval in which the actual operating frequency of the variable frequency compressor is located, and obtaining the target carrier frequency and the upper and lower limits of the target carrier frequency; controlling the operation of the variable frequency compressor based on the target carrier frequency, and obtaining the external ambient temperature, system pressure, intelligent power module temperature and electric control box temperature after the variable frequency compressor has been running for a predetermined period of time; and calculating the output carrier frequency within the upper and lower limits of the target carrier frequency according to the external ambient temperature, system pressure, intelligent power module temperature and electric control box temperature, so as to control the operation of the variable frequency compressor.

[0088] Those skilled in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be completed by a computer program, or by controlling related hardware through a computer program. The computer program may be stored in a computer-readable storage medium and loaded and executed by a processor.

[0089] To this end, an embodiment of the present application further provides a storage medium, in which a computer program is stored. The computer program can be loaded by a processor to execute the steps in any method provided in the embodiment of the present application.

[0090] The storage medium may be a computer-readable storage medium, and the storage medium may include: a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc.

[0091] Since the computer program stored in the storage medium can execute the steps in any method provided in the embodiments of the present application, the beneficial effects that can be achieved by the method provided in the embodiments of the present application can be achieved. Please refer to the previous embodiments for details and will not be repeated here.

[0092] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the embodiments disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the art that are not disclosed in the present application.

[0093] It should be understood that the present application is not limited to the embodiments that have been described above and shown in the accompanying drawings, but various modifications and changes may be made without departing from the scope thereof.

Claims

1. An air conditioner frequency conversion control method, characterized in that: include: Acquire adaptive variable carrier frequency data, wherein the adaptive variable carrier frequency data includes a plurality of operating frequency intervals and a basic carrier frequency and an upper and lower limit of the carrier frequency corresponding to each of the operating frequency intervals; Determine 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, and obtain the target carrier frequency and the upper and lower limits of the target carrier frequency; Controlling the operation of the variable frequency compressor based on the target carrier frequency, and obtaining the external environment temperature, system pressure, intelligent power module temperature and electric control box temperature after the variable frequency compressor has been running for a predetermined period of time; 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 to control the operation of the variable frequency compressor.

2. The method according to claim 1, characterized in that 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.

3. The method according to claim 1 or 2, characterized in that: 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 to control the operation of the variable frequency compressor, including: 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 the current first output value is superimposed with the historical first output value to obtain the outer ring temperature adjustment output value; 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 the current second output value is superimposed with the historical second output value to obtain the system pressure adjustment output value; Calculate the current third output value according to the intelligent power module temperature, the power module temperature control base and the power module temperature adjustment weight coefficient, and superimpose the current third output value with the historical third output value to obtain the intelligent power module temperature adjustment output value; 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 the current fourth output value is superimposed with the historical fourth output value to obtain the electric control box temperature adjustment output value; The outer ring temperature regulation output value and the system pressure regulation output value are summed, and the temperature regulation output value of the intelligent power module and the temperature regulation output value of the electric control box are subtracted to obtain the current output carrier frequency, and the output carrier frequency is superimposed with the historical output carrier frequency to obtain the output carrier frequency.

4. The method according to claim 3, characterized in that The current first output value is calculated according to the external environment temperature, the external ring temperature control base and the external ring temperature adjustment weight coefficient and superimposed with the historical first output value to obtain the external ring temperature adjustment output value, including: According to the formula 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 the outer loop temperature adjustment output value, wherein Fw refers to the outer loop temperature adjustment 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 adjustment weight coefficient, and k refers to the kth time before the nth time.

5. The method according to claim 3, characterized in that: 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 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 of the nth time is calculated and superimposed with the historical second output value of the previous n-1 times to obtain the system pressure regulation output value, wherein 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.

6. The method according to claim 3, characterized in that The calculating according to the intelligent power module temperature, the power module temperature control base and the power module temperature adjustment weight coefficient to obtain the current third output value and superimposing it with the historical third output value to obtain the intelligent power module temperature adjustment output value includes: 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 the intelligent power module temperature adjustment output value, wherein Fipm refers to the intelligent power module temperature adjustment 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 adjustment weight coefficient, and k refers to the kth time before the nth time.

7. The method according to claim 3, characterized in that 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 of the nth time is calculated and superimposed with the historical fourth output value of the previous n-1 times to obtain the temperature adjustment output value of the electric control box, wherein Fbox refers to the temperature adjustment output value of the electric control box, Tbox refers to the temperature of the electric control box, Tboxb refers to the temperature control base of the electric control box, Kbox refers to the temperature adjustment weight coefficient of the electric control box, and k refers to the kth time before the nth time.

8. An air conditioner frequency conversion control device, characterized in that: include: An acquisition module is used to: acquire adaptive variable carrier frequency data, wherein 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 limits respectively corresponding to each of the operating frequency intervals; A determination module is used to: determine 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, and obtain the target carrier frequency and the upper and lower limits of the target carrier frequency; A driving module, used to: control the operation of the variable frequency compressor based on the target carrier frequency, and obtain the external environment temperature, system pressure, intelligent power module temperature and electric control box temperature after the variable frequency compressor runs for a predetermined period of time; The calculation module is used to calculate the output carrier frequency 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.

9. A storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed by a processor of the air conditioner, the air conditioner executes the method according to any one of claims 1 to 7.

10. An air conditioner, characterized in that: include: a memory storing a computer program; A processor reads a computer program stored in a memory to execute the method according to any one of claims 1 to 7.

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