Control method and control device of solar air conditioner and solar air conditioner

Abstract

The application provides a solar air conditioner control method, a control device and a solar air conditioner. The solar air conditioner control method comprises the following steps: obtaining a power supply mode of the solar air conditioner; determining that the solar air conditioner is in a solar power supply mode, and obtaining solar input power of the solar air conditioner; and adjusting a carrier frequency of the solar air conditioner according to the solar input power. The solar air conditioner control method, the control device and the solar air conditioner provided by the application can adjust the carrier frequency based on the solar input power, so that the carrier frequency of the solar air conditioner can be matched with the solar input power, thereby facilitating normal operation of the solar air conditioner and protecting internal electronic components.

Description

Technical Field

[0001] This invention relates to the field of electrical technology, and in particular to a control method, control device, and solar air conditioner. Background Technology

[0002] New energy has become a new direction for development in this century. Affected by various factors, power outages and other phenomena have caused people to worry about the future. What will people do if a city experiences a collective power outage?

[0003] In related technologies, for solar air conditioners, if it is a cloudy day or the power generation is relatively low, and the mains power cannot supplement it, the solar power supply device will not be able to meet the air conditioner's normal operating power, causing the air conditioner to operate at a low frequency for a long time. If the air conditioner compressor operates at a low frequency for a long time, the air conditioner's carrier frequency will be relatively high, which will aggravate the wear and tear on electronic components and is not conducive to the normal cooling and heating operation of the air conditioner. Summary of the Invention

[0004] This invention provides a control method, control device, and solar air conditioner for solar air conditioning, which solves the defects of existing solar air conditioners and achieves the following technical effects: the carrier frequency of the solar air conditioner can be matched with the solar input power, which is beneficial to the normal operation of the solar air conditioner and also helps to protect the internal electronic components.

[0005] A control method for a solar-powered air conditioner according to a first aspect of the present invention includes:

[0006] Obtain the power supply mode of the solar-powered air conditioner;

[0007] Determine that the solar air conditioner is in solar power mode and obtain the solar input power of the solar air conditioner;

[0008] The carrier frequency of the solar air conditioner is adjusted according to the solar energy input power.

[0009] According to an embodiment of the present invention, the step of adjusting the carrier frequency of the solar air conditioner based on the solar input power specifically includes:

[0010] The carrier frequency of the solar air conditioner is adjusted based on the comparison result between the solar input power and the first preset power.

[0011] According to an embodiment of the present invention, the step of adjusting the carrier frequency of the solar air conditioner based on the comparison result between the solar input power and the first preset power specifically includes:

[0012] If the solar input power is lower than the first preset power, the carrier frequency of the solar air conditioner is adjusted to be reduced to the first preset carrier frequency.

[0013] According to an embodiment of the present invention, the step of adjusting the carrier frequency of the solar air conditioner to a first preset carrier frequency specifically includes:

[0014] The carrier frequency is controlled to gradually decrease to the first preset carrier frequency according to the first preset step size.

[0015] According to one embodiment of the present invention, the first preset power is 50% of the rated operating power of the solar air conditioner, or the first preset power is 30% of the maximum operating power of the solar air conditioner.

[0016] According to an embodiment of the present invention, the step of adjusting the carrier frequency of the solar air conditioner based on the solar input power specifically includes:

[0017] The carrier frequency of the solar air conditioner is adjusted according to the range of the solar input power.

[0018] According to an embodiment of the present invention, the step of adjusting the carrier frequency of the solar air conditioner according to the range of the solar input power specifically includes:

[0019] Based on the solar input power being within a first power range, the carrier frequency is adjusted to a second preset carrier frequency;

[0020] Based on the fact that the solar input power is in the second power range, the carrier frequency is adjusted to the third preset carrier frequency;

[0021] Wherein, the first power range is higher than the second power range, and the second preset carrier frequency is higher than the third preset carrier frequency.

[0022] According to one embodiment of the present invention, the step of adjusting the carrier frequency to a second preset carrier frequency includes: controlling the carrier frequency to gradually change to the second preset carrier frequency according to a second preset step size;

[0023] The step of adjusting the carrier frequency to the third preset carrier frequency includes: controlling the carrier frequency to gradually change to the third preset carrier frequency according to the third preset step size.

[0024] According to one embodiment of the present invention, after obtaining the power supply mode of the solar air conditioner, the control method of the solar air conditioner further includes:

[0025] Determine whether the solar air conditioner is in hybrid power supply mode or mains power supply mode, and obtain the total input power of the solar air conditioner;

[0026] The carrier frequency of the solar air conditioner is adjusted based on the comparison result between the total input power and the second preset power.

[0027] According to one embodiment of the present invention, the step of adjusting the carrier frequency of the solar air conditioner based on the comparison result of the total input power and the second preset power specifically includes:

[0028] If the total input power is higher than the second preset power, the carrier frequency is adjusted to increase to the fourth preset carrier frequency.

[0029] A control device for a solar-powered air conditioner according to a second aspect of the present invention includes:

[0030] The first acquisition module is used to acquire the power supply mode of the solar air conditioner;

[0031] The second acquisition module is used to determine that the solar air conditioner is in solar power supply mode and acquire the solar input power of the solar air conditioner;

[0032] The first control module is used to adjust the carrier frequency of the solar air conditioner according to the solar input power.

[0033] A solar-powered air conditioner according to a third aspect of the present invention includes:

[0034] The control device or controller for a solar air conditioner as described in the second aspect of the present invention is used to execute the control method for a solar air conditioner as described in the first aspect of the present invention.

[0035] The solar-powered air conditioner body includes a solar power supply device and an air conditioner, wherein the solar power supply device supplies power to the air conditioner.

[0036] The solar air conditioner control method, control device, and solar air conditioner proposed in this invention can adjust the carrier frequency based on the solar input power, so that the carrier frequency of the solar air conditioner can be matched with the solar input power, which is beneficial to the normal operation of the solar air conditioner and also to the protection of the internal electronic components.

[0037] Furthermore, the control method of the solar air conditioner of the present invention does not use a fixed carrier frequency, but effectively adjusts the carrier frequency according to the solar input power. By changing the carrier frequency, the air conditioner uses a lower carrier frequency when operating at low power, which reduces losses and heat generation. When operating at high power, the air conditioner uses a higher carrier frequency, which can reduce compressor noise, reduce compressor heat generation, and improve the performance and stability of the system. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0039] Figure 1 This is a flowchart illustrating the control method for a solar-powered air conditioner provided by the present invention;

[0040] Figure 2 This is a schematic diagram of the control device for a solar-powered air conditioner provided by the present invention;

[0041] Figure 3 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0043] The control method, control device, and solar air conditioner proposed in this invention are described below with reference to the accompanying drawings. Before detailing the embodiments of this invention, the overall application scenario is described first. The control method, control device, electronic device, and computer-readable storage medium of the solar air conditioner according to the embodiments of this invention can be applied locally to the solar air conditioner, to cloud platforms in the Internet field, or to other types of cloud platforms in the Internet field, or to third-party devices. These third-party devices may include various types such as mobile phones, tablets, laptops, in-vehicle computers, and other smart terminals.

[0044] The following description uses only the control method applicable to solar air conditioners as an example. It should be understood that the control method of this embodiment can also be applied to cloud platforms and third-party devices.

[0045] It should also be noted that the solar air conditioning control method proposed in this invention has universality, that is, this method is also applicable to fixed frequency air conditioners for cooling or heating in low temperature or high temperature environments.

[0046] like Figure 1 As shown, the control method for a solar-powered air conditioner according to a first aspect embodiment of the present invention includes:

[0047] Step 100: Obtain the power supply mode of the solar air conditioner;

[0048] Step 200: Determine that the solar air conditioner is in solar power mode and obtain the solar input power of the solar air conditioner;

[0049] Step 300: Adjust the carrier frequency of the solar air conditioner according to the solar input power.

[0050] Regarding the control method for solar-powered air conditioners proposed in this invention, it should first be noted that a solar-powered air conditioner refers to a household appliance that uses a solar power supply device to supply power to the air conditioner. A solar-powered air conditioner has the following three power supply modes: the first power supply mode is a solar power supply mode that uses only a solar power supply device to supply power; the second power supply mode is a hybrid power supply mode that uses both a solar power supply device and mains power to supply power; and the third power supply mode is a mains power supply mode that uses only mains power to supply power. The solar-powered air conditioner can flexibly select different power supply modes according to specific power consumption and usage requirements.

[0051] In addition, it should be explained that when a solar air conditioner is running, there will be a corresponding carrier frequency. This carrier frequency is a parameter used by the compressor control in the solar air conditioner to achieve equivalent control of the load using a sine wave. The carrier frequency affects the operating power of the IGBT components in the compressor inverter. If the carrier frequency is too high, although it can achieve the effect of noise reduction, it will result in excessive energy consumption and temperature, which is not conducive to the normal operation of the components.

[0052] According to an embodiment of the present invention, the control method for a solar-powered air conditioner operates as follows: In step 100, the controller first determines the power supply mode of the solar-powered air conditioner under current operation. The power supply mode includes a solar power supply mode, a hybrid power supply mode, and a mains power supply mode. It should be noted that the controller can determine the specific power supply mode of the solar-powered air conditioner by acquiring external command inputs or by judging the power supply status of the mains power and solar power supply devices.

[0053] In step 200, when the controller determines that the solar air conditioner is powered only by the solar power supply device, that is, when the solar air conditioner is in the solar power supply mode, the solar power input of the solar power supply device to the solar air conditioner is the total external power input to the solar air conditioner. Therefore, the air conditioner obtains the current solar power input.

[0054] In step 300, after the controller obtains the solar input power, it will adjust the carrier frequency of the solar air conditioner according to the specific magnitude of the solar input power, so that the carrier frequency of the solar air conditioner can match the solar input power, which is conducive to the normal operation of the solar air conditioner and also helps to protect the internal electronic components.

[0055] In related technologies, for solar air conditioners, if it is a cloudy day or the power generation is relatively low, and the mains power cannot supplement it, the solar power supply device will not be able to meet the air conditioner's normal operating power, causing the air conditioner to operate at a low frequency for a long time. If the air conditioner compressor operates at a low frequency for a long time, the air conditioner's carrier frequency will be relatively high, which will aggravate the wear and tear on electronic components and is not conducive to the normal cooling and heating operation of the air conditioner.

[0056] In summary, in order to solve the technical problems in the above-mentioned related technologies, the present invention proposes a control method for solar air conditioners. This control method can adjust the carrier frequency based on the solar input power, so that the carrier frequency of the solar air conditioner can be matched with the solar input power, which is beneficial to the normal operation of the solar air conditioner and also helps to protect the internal electronic components.

[0057] For example, the controller acquires the specific magnitude of the solar input power in real time and compares it with other preset values ​​or preset ranges to determine the magnitude of the solar input power, thereby adjusting the carrier frequency. Specifically, when the solar input power is low, the controller controls the carrier frequency to decrease; when the solar input power is high, the controller controls the carrier frequency to increase.

[0058] Thus, the control method of the solar air conditioner of the present invention does not use a fixed carrier frequency, but effectively adjusts the carrier frequency according to the solar input power. By changing the carrier frequency, the air conditioner uses a lower carrier frequency when operating at low power, which reduces losses and heat generation. When operating at high power, the air conditioner uses a higher carrier frequency, which can reduce compressor noise, reduce compressor heat generation, and improve the performance and stability of the system.

[0059] According to some embodiments of the present invention, the step of adjusting the carrier frequency of a solar air conditioner based on the solar input power specifically includes:

[0060] The carrier frequency of the solar air conditioner is adjusted based on the comparison between the solar input power and the first preset power.

[0061] Furthermore, the step of adjusting the carrier frequency of the solar air conditioner based on the comparison result between the solar input power and the first preset power specifically includes:

[0062] If the solar input power is lower than the first preset power, adjust the carrier frequency of the solar air conditioner to reduce it to the first preset carrier frequency.

[0063] In this embodiment, a first preset power is preset in advance, and the solar input power is compared with the first preset power. When the solar input power is lower than the first preset power, it proves that the solar power supply device is insufficient to supply power to the air conditioner and cannot meet the power requirements when the air conditioner is running normally. At this time, the air conditioner is currently operating in a low frequency or high temperature state. Therefore, in order to protect the electronic components and ensure the normal operation of the air conditioner, the controller adjusts the carrier frequency to reduce it to the first preset carrier frequency.

[0064] When the solar power input is higher than the first preset power, it proves that the solar power supply device provides sufficient power to the air conditioner and can meet the power requirements when the air conditioner is running normally. Therefore, the controller can control the air conditioner to continue to operate according to the carrier frequency set by the original system.

[0065] It should be noted that the first preset power can be obtained by the user in advance, or it can be obtained by the system default setting, or the first preset power can be obtained based on other power parameters. This invention does not impose any special limitations on this.

[0066] Preferably, the control method of the present invention further includes: determining the first preset power according to the rated operating power or maximum operating power of the solar air conditioner.

[0067] For example, the preset power is 50% of the rated operating power of the solar air conditioner, or the preset power is 30% of the maximum operating power of the solar air conditioner. That is, when the preset power is 50% of the rated operating power of the solar air conditioner, if the controller determines that the solar input power is lower than 50% of the rated operating power of the solar air conditioner, the controller controls the carrier frequency to decrease to the first preset carrier frequency; or, when the preset power is 30% of the maximum operating power of the solar air conditioner, if the controller determines that the solar input power is lower than 30% of the maximum operating power of the solar air conditioner, the controller controls the carrier frequency to decrease to the first preset carrier frequency.

[0068] It should also be noted that the first preset carrier frequency can be determined by the user in advance, or by the system default setting, or the first preset power can be determined based on other operating parameters. This invention does not impose any special limitations on this.

[0069] Preferably, the control method of the present invention further includes: determining a first preset carrier frequency based on the ratio or difference between the solar input power and the rated operating power of the solar air conditioner. For example, when the solar input power is equal to 40% of the rated operating power, the first preset carrier frequency is 40% of the original system's set carrier frequency.

[0070] According to some embodiments of the present invention, the step of adjusting the carrier frequency of a solar air conditioner to a first preset carrier frequency specifically includes:

[0071] The carrier frequency is gradually reduced to the first preset carrier frequency according to the first preset step size.

[0072] In this embodiment, when the solar input power of the solar air conditioner is lower than a first preset power, the carrier frequency is controlled to gradually decrease from the original carrier frequency to the first preset carrier frequency with a first preset step size. In this way, by reasonably setting the size of the first preset step size, the carrier frequency is adjusted gradually, achieving smooth adjustment of the carrier frequency, improving the stability of the air conditioner system, and avoiding damage to the power module from a sudden increase in carrier frequency.

[0073] Furthermore, the first preset step size can be set to decrease by 0.2 kHz every 100 milliseconds. Of course, the first preset step size can also be set to other values, and this invention does not impose any specific limitations on it. It should be noted that personnel can select an appropriate value for the first preset step size according to specific needs.

[0074] Thus, if the first preset step size is too small, it will affect the stability of the solar air conditioner; if the first preset step size is too large, it may cause damage to the power module. Therefore, this invention, by setting the first preset step size to an appropriate value, can achieve average and uniform adjustment of the carrier frequency, thereby improving the stability of the air conditioner and its system and avoiding damage to the power module caused by a sudden increase in the carrier frequency.

[0075] According to other embodiments of the present invention, the step of adjusting the carrier frequency of a solar air conditioner based on the solar input power specifically includes:

[0076] Adjust the carrier frequency of the solar air conditioner according to the range of solar input power.

[0077] In this way, by determining the range of solar input power and adjusting the carrier frequency according to the different ranges mentioned above, the carrier frequency can be adapted to the current solar input power, ensuring the normal operation of the solar air conditioner.

[0078] In some embodiments, the step of adjusting the carrier frequency of the solar air conditioner according to the range of the solar input power specifically includes:

[0079] Based on the solar input power being in the first power range, adjust the carrier frequency to the second preset carrier frequency;

[0080] Based on the solar input power being in the second power range, adjust the carrier frequency to the third preset carrier frequency;

[0081] The first power range is higher than the second power range, and the second preset carrier frequency is higher than the third preset carrier frequency.

[0082] For example, the carrier frequency in this embodiment of the invention may include multiple carrier frequency bands, including but not limited to low-frequency carrier frequency bands, medium-frequency carrier frequency bands, and high-frequency carrier frequency bands. The low-frequency carrier frequency band may be 1kHz-5kHz, while the medium-frequency carrier frequency band may be 6kHz-10kHz, and the high-frequency carrier frequency band may be 11kHz-15kHz. Solar-powered air conditioners can also be categorized into low-frequency operation mode, normal operation mode, and high-frequency operation mode based on the different solar input power.

[0083] When the solar air conditioner is in normal operation, the solar input power is within the range of being higher than the second power range and lower than the first power range. At this time, the carrier frequency of the air conditioner is set within the medium carrier frequency range according to the original system settings.

[0084] When the solar air conditioner is in high-frequency operation, the solar input power is within the first power range. At this time, the second preset carrier frequency can be selected within the higher carrier frequency band. That is, the controller will increase the carrier frequency from the original carrier frequency to a certain frequency value within the higher carrier frequency band.

[0085] When the solar air conditioner is in low-frequency operation, the solar input power is within the second power range. At this time, the third preset carrier frequency can be selected within the low-frequency carrier band. That is, the controller will reduce the carrier frequency from the original carrier frequency to a certain frequency value within the low-frequency carrier band.

[0086] Of course, the specific values ​​of the first power range, the second power range, the second preset carrier frequency and the third preset carrier frequency of the present invention are not limited to the above embodiments, and the present invention does not impose any special limitations here.

[0087] Furthermore, the step of adjusting the carrier frequency to the second preset carrier frequency includes: controlling the carrier frequency to gradually change to the second preset carrier frequency according to the second preset step size.

[0088] In this embodiment, when the solar input power of the solar air conditioner is within the first power range, the carrier frequency is controlled to gradually increase from the original carrier frequency to the second preset carrier frequency with a second preset step size. In this way, by reasonably setting the size of the second preset step size, the carrier frequency is adjusted gradually, achieving smooth adjustment of the carrier frequency, improving the stability of the air conditioner system, and avoiding damage to the power module from a sudden increase in carrier frequency.

[0089] Furthermore, the step of adjusting the carrier frequency to the third preset carrier frequency includes: controlling the carrier frequency to gradually change to the third preset carrier frequency according to the third preset step size.

[0090] In this embodiment, when the solar input power of the solar air conditioner is in the second power range, the carrier frequency is controlled to gradually decrease from the original carrier frequency to the third preset carrier frequency with a third preset step size. In this way, by reasonably setting the size of the third preset step size, the carrier frequency is adjusted gradually, achieving smooth adjustment of the carrier frequency, improving the stability of the air conditioner system, and avoiding damage to the power module from a sudden increase in carrier frequency.

[0091] According to some embodiments of the present invention, after obtaining the power supply mode of the solar air conditioner, the control method of the solar air conditioner further includes:

[0092] Determine whether the solar air conditioner is in hybrid power supply mode or mains power supply mode, and obtain the total input power of the solar air conditioner;

[0093] Based on the comparison between the total input power and the second preset power, the carrier frequency of the solar air conditioner is adjusted.

[0094] Furthermore, the step of adjusting the carrier frequency of the solar air conditioner based on the comparison result between the total input power and the second preset power specifically includes:

[0095] If the total input power is higher than the second preset power, adjust the carrier frequency to increase to the fourth preset carrier frequency.

[0096] In this embodiment, when the solar air conditioner is in hybrid power supply mode or mains power supply mode, the air conditioner rarely operates at low frequency because the external power supply to the air conditioner is sufficient. However, the air conditioner is very prone to high frequency operation. When the controller detects that the total input power is too high and causes the air conditioner to operate at high frequency, the controller adjusts the carrier frequency to the fourth preset carrier frequency, so that the current carrier frequency adapts to and matches the current air conditioner operating power, ensuring the stable operation of the air conditioner.

[0097] The control device for a solar-powered air conditioner provided by the present invention is described below. The control device for a solar-powered air conditioner described below can be referred to in correspondence with the control method for a solar-powered air conditioner described above.

[0098] like Figure 2 As shown, the control device for a solar-powered air conditioner according to a second aspect embodiment of the present invention includes:

[0099] The first acquisition module 110 is used to acquire the power supply mode of the solar air conditioner;

[0100] The second acquisition module 120 is used to determine that the solar air conditioner is in solar power supply mode and to acquire the solar input power of the solar air conditioner.

[0101] The first control module 130 is used to adjust the carrier frequency of the solar air conditioner according to the solar input power.

[0102] According to a third aspect of the present invention, a solar-powered air conditioner includes a control device or controller as described in the second aspect of the present invention. The controller is used to execute the control method of the solar-powered air conditioner described above.

[0103] The solar air conditioner also includes the solar air conditioner body, which includes a solar power supply device and an air conditioner, with the solar power supply device supplying power to the air conditioner.

[0104] The control device and solar air conditioner of the solar air conditioner according to the embodiments of the present invention have similar technical effects to the control method of the solar air conditioner described above, and will not be repeated here.

[0105] Figure 3 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 3 As shown, the electronic device may include a processor 810, a communication interface 820, a memory 830, and a communication bus 840. The processor 810, communication interface 820, and memory 830 communicate with each other via the communication bus 840. The processor 810 can call logical instructions from the memory 830 to execute the solar air conditioning control method described above.

[0106] Furthermore, the logical instructions in the aforementioned memory 830 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0107] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the solar air conditioning control method described above.

[0108] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to perform the control method for the solar air conditioner described above.

[0109] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0110] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control method of a solar air conditioner, characterized by, The method comprises the following steps: acquiring a power supply mode of a solar air conditioner; determining that the solar air conditioner is in a solar power supply mode, and acquiring solar input power of the solar air conditioner; adjusting a carrier frequency of the solar air conditioner according to the solar input power; the step of adjusting the carrier frequency of the solar air conditioner according to the solar input power specifically comprises: adjusting the carrier frequency of the solar air conditioner according to a comparison result between the solar input power and a first preset power; the step of adjusting the carrier frequency of the solar air conditioner according to the comparison result between the solar input power and the first preset power specifically comprises: adjusting the carrier frequency of the solar air conditioner to decrease to a first preset carrier frequency according to the solar input power being lower than the first preset power; the step of adjusting the carrier frequency of the solar air conditioner to decrease to the first preset carrier frequency specifically comprises: controlling the carrier frequency to gradually decrease to the first preset carrier frequency according to a first preset step length; wherein, by setting the size of the first preset step length, the gradual change of the carrier frequency is adjusted, the smooth adjustment of the carrier frequency is realized, and the damage of the carrier frequency to a power module caused by instantaneous power increase is avoided.

2. The control method of a solar air conditioner according to claim 1, characterized by, the first preset power is 50% of a rated operating power of the solar air conditioner, or the first preset power is 30% of a maximum operating power of the solar air conditioner.

3. The control method of a solar air conditioner according to claim 1, characterized by, the step of adjusting the carrier frequency of the solar air conditioner according to the solar input power specifically comprises: adjusting the carrier frequency of the solar air conditioner according to an interval range in which the solar input power is located.

4. The control method of a solar air conditioner according to claim 3, characterized by, the step of adjusting the carrier frequency of the solar air conditioner according to the interval range in which the solar input power is located specifically comprises: adjusting the carrier frequency to a second preset carrier frequency according to the solar input power being in a first power interval; adjusting the carrier frequency to a third preset carrier frequency according to the solar input power being in a second power interval; wherein, the first power interval is higher than the second power interval, and the second preset carrier frequency is higher than the third preset carrier frequency.

5. The control method of the solar air conditioner according to claim 4, characterized in that, the step of adjusting the carrier frequency to the second preset carrier frequency comprises: controlling the carrier frequency to gradually change to the second preset carrier frequency according to a second preset step length; the step of adjusting the carrier frequency to the third preset carrier frequency comprises: controlling the carrier frequency to gradually change to the third preset carrier frequency according to a third preset step length.

6. The control method of a solar air conditioner according to claim 1, characterized by, after the step of acquiring the power supply mode of the solar air conditioner, the method further comprises the following steps: determining that the solar air conditioner is in a hybrid power supply mode or a mains power supply mode, and acquiring total input power of the solar air conditioner; adjusting the carrier frequency of the solar air conditioner according to a comparison result between the total input power and a second preset power.

7. The control method of a solar air conditioner according to claim 6, characterized by, the step of adjusting the carrier frequency of the solar air conditioner according to the comparison result between the total input power and the second preset power specifically comprises: adjusting the carrier frequency to increase to a fourth preset carrier frequency according to the total input power being higher than the second preset power.

8. A control device for a solar air conditioner, characterized in that, the method comprises the following steps: The first acquisition module is configured to acquire a power supply mode of the solar air conditioner. The second acquisition module is configured to determine that the solar air conditioner is in the solar power supply mode, and acquire a solar input power of the solar air conditioner. The first control module is configured to adjust a carrier frequency of the solar air conditioner according to the solar input power. The step of adjusting the carrier frequency of the solar air conditioner according to the solar input power specifically includes adjusting the carrier frequency of the solar air conditioner according to a comparison result between the solar input power and a first preset power. The step of adjusting the carrier frequency of the solar air conditioner according to the comparison result between the solar input power and the first preset power specifically includes adjusting the carrier frequency of the solar air conditioner to decrease to a first preset carrier frequency according to the solar input power being lower than the first preset power. The step of adjusting the carrier frequency of the solar air conditioner to decrease to the first preset carrier frequency specifically includes controlling the carrier frequency to gradually decrease to the first preset carrier frequency according to a first preset step size. The first preset step size is set to adjust the gradual change of the carrier frequency, to achieve smooth adjustment of the carrier frequency, and to avoid damage of the carrier frequency to the power module.

9. A solar air conditioner characterized by, The controller is configured to execute the control method of the solar air conditioner according to any one of claims 1 to 7, or the control device of the solar air conditioner according to claim 8. The solar air conditioner body includes a solar power supply device and an air conditioner, and the solar power supply device supplies power to the air conditioner. ​

Images