Fan control method, device, system and storage medium

Abstract

The present disclosure discloses a fan control method, device, system and storage medium, and relates to the field of air conditioners. The method comprises: after the modular multi-connected air conditioner system is started, in the case that at least one photovoltaic multi-connected air conditioner in the modular multi-connected air conditioner system is not started, or the modular multi-connected air conditioner system is in an oil return state or a defrosting state, the temperature of a photovoltaic module of the at least one photovoltaic multi-connected air conditioner is acquired; and based on the temperature of the photovoltaic module, the working state of an outdoor fan of the at least one photovoltaic multi-connected air conditioner is controlled, wherein the outdoor fan is in a starting state to dissipate heat for the photovoltaic module, which can avoid the damage of high temperature generated by the operation of the photovoltaic module to components and devices, thereby improving the reliability of the modular multi-connected air conditioner system.

Description

Technical Field

[0001] This disclosure relates to the field of air conditioning, and more particularly to a fan control method, apparatus, system and storage medium. Background Technology

[0002] A modular multi-split air conditioning system consists of multiple multi-split units. For example, one or more photovoltaic (PV) multi-split units can be combined with one or more non-PV multi-split units to form a modular multi-split system, or multiple PV multi-split units can form a modular multi-split system. Since PV multi-split units include PV drive modules and PV panels, in some cases, the PV modules are prone to generating high temperatures that can damage components during operation. To ensure reliable operation of these components, the multi-split system needs to be controlled. Summary of the Invention

[0003] One technical problem this disclosure aims to solve is to provide a wind turbine control method, apparatus, system, and storage medium that can prevent high temperatures generated during the operation of photovoltaic modules from damaging components.

[0004] According to one aspect of this disclosure, a wind turbine control method is proposed, comprising: after the modular multi-split air conditioning system is started, when at least one photovoltaic multi-split air conditioning unit in the modular multi-split air conditioning system is not started, or when the modular multi-split air conditioning system is in oil return state or defrost state, acquiring the temperature of the photovoltaic module of at least one photovoltaic multi-split air conditioning unit; and controlling the operating state of the outdoor wind turbine of at least one photovoltaic multi-split air conditioning unit based on the temperature of the photovoltaic module, wherein the outdoor wind turbine, when in the start state, dissipates heat for the photovoltaic module.

[0005] In some embodiments, the power generation of the photovoltaic module is obtained; and when the outdoor temperature of at least one photovoltaic multi-unit is greater than an outdoor temperature threshold, the operating state of the outdoor fan is controlled based on the temperature and power generation of the photovoltaic module.

[0006] In some embodiments, controlling the operating state of the outdoor fan includes: controlling the outdoor fan to be in an on state when the temperature of the photovoltaic module is greater than a first temperature threshold; and controlling the outdoor fan to be in a off state when the temperature of the photovoltaic module is less than a second temperature threshold, wherein the second temperature threshold is less than the first temperature threshold.

[0007] In some embodiments, controlling the operating state of the outdoor wind turbine further includes: maintaining the start-stop state of the outdoor wind turbine when the temperature of the photovoltaic module is less than or equal to a first temperature threshold and greater than or equal to a second temperature threshold.

[0008] In some embodiments, controlling the operating state of the outdoor fan further includes: when the outdoor fan is in the on state, controlling the operating frequency of the outdoor fan according to the temperature of the photovoltaic module, wherein the higher the temperature of the photovoltaic module, the higher the operating frequency of the outdoor fan.

[0009] In some embodiments, controlling the operating state of the outdoor fan includes: controlling the outdoor fan to be in an on state when the temperature of the photovoltaic module is greater than a first temperature threshold; and maintaining the outdoor fan in an on state if the outdoor fan is already in an on state when the temperature of the photovoltaic module is less than or equal to the first temperature threshold and greater than or equal to a second temperature threshold; and controlling the outdoor fan to be in an on state if the outdoor fan is in an off state and the power generation of the photovoltaic module is greater than a first trigger power, and maintaining the outdoor fan in a stopped state if the power generation of the photovoltaic module is less than or equal to the first trigger power.

[0010] In some embodiments, controlling the operating state of the outdoor fan further includes: if the power generation of the photovoltaic module is greater than the first trigger power when the temperature of the photovoltaic module is less than the second temperature threshold, controlling the outdoor fan to be in the on state; if the power generation of the photovoltaic module is less than or equal to the first trigger power and greater than or equal to the second trigger power, maintaining the start-stop state of the outdoor fan; and if the power generation of the photovoltaic module is less than the second trigger power, controlling the outdoor fan to be in the off state.

[0011] In some embodiments, the first trigger power and the second trigger power are determined based on the outdoor temperature.

[0012] In some embodiments, when at least one photovoltaic multi-split system is in the start-up state, the operating power of the outdoor fan is controlled based on the temperature of the photovoltaic modules.

[0013] In some embodiments, controlling the operating power of the outdoor fan includes: increasing the current operating frequency of the outdoor fan when the temperature of the photovoltaic module is greater than a third temperature threshold; maintaining the operating frequency of the outdoor fan when the temperature of the photovoltaic module is less than or equal to the third temperature threshold and greater than or equal to a fourth temperature threshold; and controlling the operating frequency of the outdoor fan based on the pressure at the exhaust port of the compressor of at least one photovoltaic multi-split unit when the temperature of the photovoltaic module is less than the fourth temperature threshold.

[0014] In some embodiments, the third temperature threshold is equal to the first temperature threshold; and / or the fourth temperature threshold is equal to the second temperature threshold.

[0015] According to another aspect of this disclosure, a wind turbine control method is also proposed, comprising: after the modular multi-split air conditioning system is started, when at least one photovoltaic multi-split air conditioning unit in the modular multi-split air conditioning system is not started, or when the modular multi-split air conditioning system is in oil return state or defrost state, obtaining the power generation of the photovoltaic modules of at least one photovoltaic multi-split air conditioning unit; and when the outdoor temperature where at least one photovoltaic multi-split air conditioning unit is located is greater than the outdoor temperature threshold, controlling the operating state of the outdoor wind turbine based on the power generation of the photovoltaic modules.

[0016] In some embodiments, controlling the operating state of the outdoor wind turbine includes: if the power generation of the photovoltaic module is greater than the first trigger power, controlling the outdoor wind turbine to be in the on state; if the power generation of the photovoltaic module is less than or equal to the first trigger power and greater than or equal to the second trigger power, maintaining the start-stop state of the outdoor wind turbine; and if the power generation of the photovoltaic module is less than the second trigger power, controlling the outdoor wind turbine to be in the off state.

[0017] According to another aspect of this disclosure, a wind turbine control device is also proposed, comprising: a temperature acquisition module configured to acquire the temperature of the photovoltaic modules of at least one photovoltaic multi-split unit after the modular multi-split system is started, when at least one photovoltaic multi-split unit in the modular multi-split system is not started, or when the modular multi-split system is in an oil return state or a defrosting state; and a wind turbine control module configured to control the operating state of the outdoor wind turbine of at least one photovoltaic multi-split unit based on the temperature of the photovoltaic modules, wherein the outdoor wind turbine, when in the start-up state, dissipates heat for the photovoltaic modules.

[0018] In some embodiments, the power acquisition module is configured to acquire the power generation of the photovoltaic module, wherein the wind turbine control module is further configured to control the operating state of the outdoor wind turbine based on the temperature and power generation of the photovoltaic module when the outdoor temperature at at least one photovoltaic multi-unit is greater than an outdoor temperature threshold.

[0019] According to another aspect of this disclosure, a wind turbine control device is also proposed, comprising: a power acquisition module configured to acquire the power generation of the photovoltaic modules of at least one photovoltaic multi-unit after the modular multi-unit system is started, when at least one photovoltaic multi-unit in the modular multi-unit system is not started, or when the modular multi-unit system is in a return oil state or a defrost state; and a wind turbine control module configured to control the operating state of the outdoor wind turbine based on the power generation of the photovoltaic modules when the outdoor temperature where at least one photovoltaic multi-unit is located is greater than an outdoor temperature threshold.

[0020] According to another aspect of this disclosure, a wind turbine control device is also proposed, comprising: a memory; and a processor coupled to the memory, the processor being configured to execute the wind turbine control method as described above based on instructions stored in the memory.

[0021] According to another aspect of this disclosure, a modular multi-unit system is also proposed, comprising: the aforementioned fan control device.

[0022] According to another aspect of this disclosure, a non-transitory computer-readable storage medium is also proposed, on which computer program instructions are stored, which, when executed by a processor, implement the aforementioned fan control method.

[0023] In the embodiments disclosed herein, the fan of the photovoltaic multi-split system is not turned on, but when the photovoltaic modules are generating electricity, the fan is turned on in a timely manner based on the temperature of the photovoltaic modules. The fan is used to dissipate heat from the photovoltaic modules, which can prevent the high temperature generated by the operation of the photovoltaic modules from damaging the components, thereby improving the reliability of the modular multi-split system.

[0024] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0025] The accompanying drawings, which form part of this specification, illustrate embodiments of this disclosure and, together with the specification, serve to explain the principles of this disclosure.

[0026] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein:

[0027] Figure 1 The diagram shows a flowchart of some embodiments of the wind turbine control method disclosed herein.

[0028] Figure 2 The following are schematic flowcharts illustrating other embodiments of the wind turbine control method disclosed herein;

[0029] Figure 3 The following are schematic flowcharts illustrating other embodiments of the wind turbine control method disclosed herein;

[0030] Figure 4 The following are schematic flowcharts illustrating other embodiments of the wind turbine control method disclosed herein;

[0031] Figure 5 This is a schematic diagram of the structure of some embodiments of the fan control device disclosed herein;

[0032] Figure 6 The diagram shows the structure of some other embodiments of the fan control device disclosed herein;

[0033] Figure 7 The diagram shows the structure of some other embodiments of the fan control device disclosed herein;

[0034] Figure 8 Schematic diagrams of other embodiments of the fan control device disclosed herein; and

[0035] Figure 9 This is a schematic diagram of the structure of some embodiments of the modular multi-unit system disclosed herein. Detailed Implementation

[0036] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0037] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.

[0038] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use.

[0039] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0040] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0042] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0043] In a modular multi-split air conditioning system that includes photovoltaic (PV) multi-split units, the PV modules of the PV multi-split units can output electrical energy. If the system includes non-PV multi-split units, these non-PV multi-split units can utilize the output power of the PV multi-split units or use conventional mains power. During normal system operation, one outdoor unit module acts as the main outdoor unit, coordinating the startup sequence and load operation of the various modules. During system operation, one or more multi-split units are activated based on the consumer's required cooling or heating capacity. When not all multi-split units are activated, the fan control of the non-activated PV multi-split units needs to be coordinated, and the fan control of the activated PV multi-split units also needs to be coordinated.

[0044] Figure 1The diagram below illustrates a flow chart of some embodiments of the fan control method disclosed herein, which is executed by a fan control device, for example, located in the main outdoor unit of a modular multi-split air conditioning system.

[0045] In step 110, after the modular multi-split system is started, the temperature of the photovoltaic module of the at least one photovoltaic multi-split system is obtained when at least one photovoltaic multi-split system is not started, or when the modular multi-split system is in the oil return state or defrosting state.

[0046] In some embodiments, it is determined whether to activate one or more multi-split units based on the cooling or heating capacity requirements. If the photovoltaic multi-split unit is not activated, or the modular multi-split unit system is in oil return or defrosting mode, the photovoltaic multi-split unit's fan is not activated, but the photovoltaic modules still need to generate electricity. When the photovoltaic modules generate electricity, it easily causes the main components to heat up. Therefore, the main components need to dissipate heat during the power generation process to avoid damage to the components.

[0047] This step involves real-time monitoring of the temperature of the photovoltaic modules during grid connection.

[0048] In step 120, based on the temperature of the photovoltaic modules, the operating state of at least one outdoor fan of the photovoltaic multi-split unit is controlled, wherein the outdoor fan is in the start-up state to dissipate heat from the photovoltaic modules.

[0049] In some embodiments, when the temperature of the photovoltaic module is greater than a first temperature threshold, the outdoor fan is controlled to be turned on; when the temperature of the photovoltaic module is less than a second temperature threshold, the outdoor fan is controlled to be turned off, wherein the second temperature threshold is less than the first temperature threshold.

[0050] In some embodiments, the first temperature threshold is 60° to 70° and the second temperature threshold is 55° to 65°, but the second temperature threshold is less than the first temperature threshold.

[0051] For example, if the temperature of the photovoltaic module is too high, such as 70°C, the corresponding fan of the photovoltaic multi-split unit should be turned on in time to dissipate heat from the photovoltaic module. If the temperature of the photovoltaic module is not high, such as less than 65°C, no cooling treatment is required. Therefore, the fan can be turned off to achieve the purpose of energy saving.

[0052] In some embodiments, the outdoor wind turbine is kept in a start-stop state when the temperature of the photovoltaic module is less than or equal to a first temperature threshold and greater than or equal to a second temperature threshold.

[0053] For example, if the photovoltaic (PV) module temperature is too high and the wind turbine has already started, the wind turbine will remain on after the PV module temperature drops to a certain level. If the PV module is not on, and its temperature is detected to be between a second and a first temperature threshold, the wind turbine will remain off until the PV module temperature reaches the first temperature threshold. This prevents excessive fluctuations in the wind turbine's operation.

[0054] In the above embodiments, the fan of the photovoltaic multi-split system is not turned on, but when the photovoltaic modules are generating electricity, the fan is turned on in a timely manner according to the temperature of the photovoltaic modules. The fan is used to dissipate heat from the photovoltaic modules, which can prevent the high temperature generated by the operation of the photovoltaic modules from damaging the components.

[0055] In some embodiments, when the outdoor fan is in the on state, the operating frequency of the outdoor fan is controlled according to the temperature of the photovoltaic module, wherein the higher the temperature of the photovoltaic module, the higher the operating frequency of the outdoor fan.

[0056] For example, when the temperature of the photovoltaic module reaches 70°C, the outdoor fan operates at a frequency of 40Hz; if the photovoltaic module continues to heat up, for example, to 80°C, the frequency of the outdoor fan is increased to 50Hz; if the photovoltaic module continues to heat up, for example, to 90°C, the outdoor fan operates at its maximum frequency; when the photovoltaic module cannot dissipate heat through the fan, for example, when the temperature of the photovoltaic module reaches 115°C, temperature protection is required, that is, the photovoltaic module stops generating electricity to prevent the components in the photovoltaic module from burning out.

[0057] Figure 2 This is a flowchart illustrating some other embodiments of the wind turbine control method disclosed herein. This embodiment is executed after the modular multi-split system is started, in cases where at least one photovoltaic multi-split unit in the modular multi-split system is not started, or when the modular multi-split system is in oil return or defrosting mode.

[0058] In step 210, the temperature and power generation of the photovoltaic modules of the photovoltaic multi-split system, as well as the outdoor temperature of the photovoltaic multi-split system, are obtained.

[0059] In step 220, when the outdoor temperature of the photovoltaic multi-split unit is greater than the outdoor temperature threshold, the operating status of the outdoor fan is controlled based on the temperature of the photovoltaic modules and the power generation.

[0060] In some embodiments, the outdoor temperature threshold is taken as 38° to 55°.

[0061] For example, when the outdoor temperature is greater than 38°C, it indicates that the unit is in a high-temperature operating condition. At this time, the grid-connected power on the grid side is monitored, which is the power generation power of the photovoltaic modules.

[0062] In some embodiments, when the temperature of the photovoltaic module is greater than a first temperature threshold, the outdoor fan is controlled to be turned on.

[0063] For example, if the temperature of the photovoltaic module exceeds 70°C, the corresponding fan of the photovoltaic multi-split unit should be turned on in time to dissipate heat from the photovoltaic module.

[0064] In some embodiments, if the temperature of the photovoltaic module is less than or equal to a first temperature threshold and greater than or equal to a second temperature threshold, and the outdoor fan is already in the on state, then the outdoor fan is kept in the on state; and if the outdoor fan is not in the on state and the power generation of the photovoltaic module is greater than a first trigger power, then the outdoor fan is controlled to be in the on state; and if the power generation of the photovoltaic module is less than or equal to the first trigger power, then the outdoor fan is kept in the off state.

[0065] For example, if the photovoltaic (PV) module temperature is too high and the wind turbine has already been turned on, the wind turbine will remain on once the PV module temperature drops to a certain level. If the PV module is not turned on, and the detected temperature of the PV module has reached between the second and first temperature thresholds, then it is necessary to determine whether the wind turbine needs to be turned on based on the power generation capacity of the PV module.

[0066] The first trigger power is determined based on the outdoor temperature. For example, the first trigger power P1 = AB * (T_ring - 38) - C, where A, B, and C are constants, such as A = 20000, B = 700, and C = 3000.

[0067] In some embodiments, when the temperature of the photovoltaic module is less than a second temperature threshold, if the power generation of the photovoltaic module is greater than the first trigger power, the outdoor fan is controlled to be in the on state; if the power generation of the photovoltaic module is less than or equal to the first trigger power and greater than or equal to the second trigger power, the outdoor fan is kept in the start-stop state; and if the power generation of the photovoltaic module is less than the second trigger power, the outdoor fan is controlled to be in the off state.

[0068] The second trigger power is determined based on the outdoor temperature. For example, the first trigger power P2 = AB * (T_ring - 38) - D, where A, B, and D are constants, such as A = 20000, B = 700, and D = 4000.

[0069] For example, if the power generation of the photovoltaic module is greater than P1, the outdoor wind turbine will be started; if the power generation of the photovoltaic module is less than P2, the outdoor wind turbine will be stopped; if the power generation of the photovoltaic module is between P2 and P1 and the outdoor wind turbine is already on, it will remain on; if the outdoor wind turbine is off, it will remain off to avoid excessive fluctuations in the status of the wind turbine.

[0070] In the above embodiments, the fan of the photovoltaic multi-split system is not turned on. However, when the photovoltaic modules are generating electricity, if the photovoltaic multi-split system is in a high-temperature condition, it is determined whether the fan needs to be turned on based on the temperature of the photovoltaic modules and the power generation. The fan is used to dissipate heat from the photovoltaic modules, which can prevent damage to the components.

[0071] Figure 3 The following are schematic flowcharts illustrating other embodiments of the wind turbine control method disclosed herein.

[0072] In step 310, after the modular multi-split system is started, the temperature of the photovoltaic modules of at least one photovoltaic multi-split system is obtained while at least one photovoltaic multi-split system is in the start-up state.

[0073] In some embodiments, when the photovoltaic multi-split system is started, the corresponding outdoor fan will also start. At this time, the outdoor fan is directly used to dissipate heat from the photovoltaic module, and the temperature of the photovoltaic module needs to be monitored in real time.

[0074] In step 320, the operating power of the outdoor wind turbine is controlled based on the temperature of the photovoltaic module.

[0075] In some embodiments, when the temperature of the photovoltaic module is greater than a third temperature threshold, the current operating frequency of the outdoor fan is increased; when the temperature of the photovoltaic module is less than or equal to the third temperature threshold and greater than or equal to a fourth temperature threshold, the operating frequency of the outdoor fan is maintained; and when the temperature of the photovoltaic module is less than the fourth temperature threshold, the operating frequency of the outdoor fan is controlled according to the pressure at the exhaust port of the compressor of at least one photovoltaic multi-split unit.

[0076] In some embodiments, the third temperature threshold is equal to the first temperature threshold, and the fourth temperature threshold is equal to the second temperature threshold.

[0077] For example, if the temperature of the photovoltaic module is greater than 70°, the fan frequency of the photovoltaic multi-split unit will be increased; if the temperature of the photovoltaic module is less than 65°, the fan control strategy of the conventional air conditioning unit will be restored; if the temperature of the photovoltaic module is between 65° and 70°, the current fan frequency will be maintained.

[0078] In the above embodiments, for a photovoltaic multi-split system in the start-up state, the operating frequency of the outdoor fan is adjusted according to the temperature of the photovoltaic modules. On the one hand, this can efficiently cool the photovoltaic modules, and on the other hand, it can improve the energy efficiency of the system and ensure stable system operation.

[0079] Figure 4 The following are schematic flowcharts illustrating other embodiments of the wind turbine control method disclosed herein.

[0080] In step 410, after the modular multi-split system is started, if at least one photovoltaic multi-split unit in the modular multi-split system is not started, or if the modular multi-split system is in the oil return state or defrosting state, the power generation of the photovoltaic modules of the at least one photovoltaic multi-split unit is obtained.

[0081] In some embodiments, it is also necessary to obtain the outdoor temperature where the at least one photovoltaic multi-unit is located.

[0082] In step 420, when the outdoor temperature of at least one photovoltaic multi-unit is greater than the outdoor temperature threshold, the operating status of the outdoor wind turbine is controlled based on the power generation of the photovoltaic modules.

[0083] In some embodiments, the outdoor temperature threshold is 38°C.

[0084] In some embodiments, if the power generation of the photovoltaic module is greater than the first trigger power, the outdoor wind turbine is controlled to be in the on state; if the power generation of the photovoltaic module is less than or equal to the first trigger power and greater than or equal to the second trigger power, the outdoor wind turbine is kept in the start-stop state; and if the power generation of the photovoltaic module is less than the second trigger power, the outdoor wind turbine is controlled to be in the stop state.

[0085] In the above embodiments, the fan of the photovoltaic multi-split system is not turned on. However, when the photovoltaic modules are generating electricity, if the photovoltaic multi-split system is in a high-temperature condition, it is determined whether the fan needs to be turned on based on the power generation of the photovoltaic modules. The fan is used to dissipate heat from the photovoltaic modules, which can prevent damage to the components.

[0086] Figure 5 This is a schematic diagram of the structure of some embodiments of the fan control device disclosed herein, which includes a temperature acquisition module 510 and a fan control module 520. The fan control device is located in the main outdoor unit of a modular multi-split air conditioning system.

[0087] The temperature acquisition module 510 is configured to acquire the temperature of the photovoltaic modules of at least one photovoltaic multi-unit after the modular multi-unit system is started, when at least one photovoltaic multi-unit in the modular multi-unit system is not started, or when the modular multi-unit system is in the oil return state or defrosting state.

[0088] The fan control module 520 is configured to control the operating status of at least one outdoor fan of a photovoltaic multi-split unit based on the temperature of the photovoltaic modules, wherein the outdoor fan, when in the start-up state, dissipates heat from the photovoltaic modules.

[0089] In some embodiments, the wind turbine control module 520 controls the outdoor wind turbine to be turned on when the temperature of the photovoltaic module is greater than a first temperature threshold; and controls the outdoor wind turbine to be turned off when the temperature of the photovoltaic module is less than a second temperature threshold, wherein the second temperature threshold is less than the first temperature threshold.

[0090] In some embodiments, the wind turbine control module 520 maintains the start-stop state of the outdoor wind turbine when the temperature of the photovoltaic module is less than or equal to a first temperature threshold and greater than or equal to a second temperature threshold.

[0091] In the above embodiments, the fan of the photovoltaic multi-split system is not turned on, but when the photovoltaic modules are generating electricity, the fan is turned on in a timely manner according to the temperature of the photovoltaic modules. The fan is used to dissipate heat from the photovoltaic modules, which can prevent the high temperature generated by the operation of the photovoltaic modules from damaging the components.

[0092] In some embodiments, the wind turbine control module 520 is further configured to control the operating frequency of the outdoor wind turbine based on the temperature of the photovoltaic module when the outdoor wind turbine is in the on state, wherein the higher the temperature of the photovoltaic module, the higher the operating frequency of the outdoor wind turbine.

[0093] In other embodiments of this disclosure, such as Figure 6 As shown, the wind turbine control device also includes a power acquisition module 610, which is configured to acquire the power generation of the photovoltaic modules. The wind turbine control module 520 is further configured to control the operating status of the outdoor wind turbine based on the temperature and power generation of the photovoltaic modules when the outdoor temperature of at least one photovoltaic multi-unit is greater than the outdoor temperature threshold.

[0094] In some embodiments, the wind turbine control module 520 controls the outdoor wind turbine to be turned on when the temperature of the photovoltaic module is greater than a first temperature threshold.

[0095] In some embodiments, the temperature acquisition module 510 is further configured to acquire the outdoor temperature of the at least one photovoltaic multi-unit.

[0096] In some embodiments, when the temperature of the photovoltaic module is less than or equal to a first temperature threshold and greater than or equal to a second temperature threshold, the wind turbine control module 520 maintains the outdoor wind turbine in the on state if it is already on; and if the outdoor wind turbine is not on and the power generation of the photovoltaic module is greater than a first trigger power, the module controls the outdoor wind turbine to be on; and if the power generation of the photovoltaic module is less than or equal to the first trigger power, the module keeps the outdoor wind turbine in the off state.

[0097] In some embodiments, when the temperature of the photovoltaic module is less than a second temperature threshold, if the power generation of the photovoltaic module is greater than a first trigger power, the wind turbine control module 520 controls the outdoor wind turbine to be in the on state; if the power generation of the photovoltaic module is less than or equal to the first trigger power and greater than or equal to the second trigger power, the outdoor wind turbine is kept in the start-stop state; and if the power generation of the photovoltaic module is less than the second trigger power, the outdoor wind turbine is controlled to be in the stop state.

[0098] In the above embodiments, the fan of the photovoltaic multi-split system is not turned on. However, when the photovoltaic modules are generating electricity, if the photovoltaic multi-split system is in a high-temperature condition, it is determined whether the fan needs to be turned on based on the temperature of the photovoltaic modules and the power generation. The fan is used to dissipate heat from the photovoltaic modules, which can prevent damage to the components.

[0099] Figure 7 The diagram below shows a structural schematic of some other embodiments of the wind turbine control device disclosed herein, which includes a power acquisition module 710 and a wind turbine control module 720.

[0100] The power acquisition module 710 is configured to acquire the power generation of the photovoltaic modules of at least one photovoltaic multi-unit after the modular multi-unit system is started, when at least one photovoltaic multi-unit in the modular multi-unit system is not started, or when the modular multi-unit system is in the oil return state or defrosting state.

[0101] In some embodiments, it is also necessary to obtain the outdoor temperature where the photovoltaic multi-unit is located.

[0102] The wind turbine control module 720 is configured to control the operating status of the outdoor wind turbine based on the power generation of the photovoltaic modules when the outdoor temperature at at least one photovoltaic multi-unit is greater than the outdoor temperature threshold.

[0103] In some embodiments, the wind turbine control module 720 is configured to control the outdoor wind turbine to be in an on state if the power generation of the photovoltaic module is greater than the first trigger power; to maintain the start-stop state of the outdoor wind turbine if the power generation of the photovoltaic module is less than or equal to the first trigger power and greater than or equal to the second trigger power; and to control the outdoor wind turbine to be in a stopped state if the power generation of the photovoltaic module is less than the second trigger power.

[0104] In the above embodiments, the fan of the photovoltaic multi-split system is not turned on. However, when the photovoltaic modules are generating electricity, if the photovoltaic multi-split system is in a high-temperature condition, it is determined whether the fan needs to be turned on based on the power generation of the photovoltaic modules. The fan is used to dissipate heat from the photovoltaic modules, which can prevent damage to the components.

[0105] Figure 8The diagram below illustrates the structure of another embodiment of the wind turbine control device 800 disclosed herein. The wind turbine control device 800 includes a memory 810 and a processor 820. The memory 810 can be a disk, flash memory, or any other non-volatile storage medium. The memory 810 is used to store instructions from the above embodiments. The processor 820 is coupled to the memory 810 and can be implemented as one or more integrated circuits, such as a microprocessor or microcontroller. The processor 820 is used to execute the instructions stored in the memory.

[0106] In some embodiments, the processor 820 is coupled to the memory 810 via a BUS bus 830. The fan control device 800 can also be connected to an external storage device 850 via a storage interface 840 to access external data, and can also be connected to a network or another computer system (not shown) via a network interface 860, which will not be described in detail here.

[0107] In this embodiment, by storing data instructions in a memory and then processing the instructions by a processor, damage to components caused by the high temperatures generated during the operation of the photovoltaic module can be avoided.

[0108] In other embodiments of this disclosure, a modular multi-split air conditioning system is also protected, which includes the fan control device described in the above embodiments.

[0109] This modular multi-split system includes multiple photovoltaic multi-split units, or, as... Figure 9 As shown, the modular multi-split air conditioning system includes one or more photovoltaic (PV) multi-split units and one or more non-PV multi-split units. The PV outdoor units 1…N are connected in parallel with the non-PV outdoor units 1…M, and each outdoor unit is connected to multiple indoor units 1…n. During operation, one outdoor unit serves as the main outdoor unit, and its fan control device is located within this main outdoor unit. By controlling the start / stop and operating power of the PV multi-split unit's fan through the main outdoor unit, damage to components due to high temperatures during PV module power generation can be avoided, thus improving system reliability and achieving energy-saving effects.

[0110] In other embodiments, a computer-readable storage medium stores computer program instructions that, when executed by a processor, implement the steps of the methods described above. Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, apparatus, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0111] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0112] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0113] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0114] This concludes the detailed description of the present disclosure. To avoid obscuring the concept of the disclosure, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solutions disclosed herein based on the above description.

[0115] While specific embodiments of this disclosure have been described in detail by way of example, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. A fan control method, comprising: After the modular multi-split air conditioning system is started, if at least one photovoltaic multi-split unit in the system is not started, or if the system is in oil return or defrosting mode, the temperature of the photovoltaic modules of the at least one photovoltaic multi-split unit and the power generation of the photovoltaic modules are obtained; and When the outdoor temperature of the at least one photovoltaic multi-split unit is greater than the outdoor temperature threshold, the operating state of the outdoor fan of the at least one photovoltaic multi-split unit is controlled based on the temperature and power generation of the photovoltaic modules, wherein the outdoor fan is in the start-up state to dissipate heat for the photovoltaic modules.

2. The fan control method according to claim 1, wherein, Controlling the operating status of the outdoor fan includes: When the temperature of the photovoltaic module exceeds a first temperature threshold, the outdoor fan is controlled to be turned on; and When the temperature of the photovoltaic module is lower than a second temperature threshold, the outdoor fan is controlled to stop, wherein the second temperature threshold is lower than the first temperature threshold.

3. The fan control method according to claim 2, wherein, Controlling the operating status of the outdoor fan also includes: When the temperature of the photovoltaic module is less than or equal to the first temperature threshold and greater than or equal to the second temperature threshold, the outdoor fan is kept in an on / off state.

4. The fan control method according to claim 2, wherein, Controlling the operating status of the outdoor fan also includes: When the outdoor fan is on, the operating frequency of the outdoor fan is controlled according to the temperature of the photovoltaic module, wherein the higher the temperature of the photovoltaic module, the higher the operating frequency of the outdoor fan.

5. The fan control method according to claim 1, wherein, Controlling the operating status of the outdoor fan includes: When the temperature of the photovoltaic module exceeds a first temperature threshold, the outdoor fan is controlled to be turned on; and When the temperature of the photovoltaic module is less than or equal to the first temperature threshold and greater than or equal to the second temperature threshold, If the outdoor fan is already on, then keep the outdoor fan on; and If the outdoor fan is not turned on and the power generation of the photovoltaic module is greater than the first trigger power, the outdoor fan is turned on. If the power generation of the photovoltaic module is less than or equal to the first trigger power, the outdoor fan is kept off.

6. The fan control method according to claim 5, wherein, Controlling the operating status of the outdoor fan also includes: If the photovoltaic module's temperature is lower than the second temperature threshold, and the photovoltaic module's power generation is greater than the first trigger power, then the outdoor fan is controlled to be turned on. If the power generation of the photovoltaic module is less than or equal to the first trigger power and greater than or equal to the second trigger power, then the outdoor wind turbine remains in its start / stop state; and If the power generation of the photovoltaic module is less than the second trigger power, the outdoor fan is controlled to stop.

7. The fan control method according to claim 6, wherein, The first trigger power and the second trigger power are determined based on the outdoor temperature.

8. The wind turbine control method according to any one of claims 2 to 7, further comprising: When at least one photovoltaic multi-split unit is in the start-up state, the operating power of the outdoor fan is controlled based on the temperature of the photovoltaic modules.

9. The fan control method according to claim 8, wherein, Controlling the operating power of the outdoor fan includes: If the temperature of the photovoltaic module exceeds a third temperature threshold, increase the current operating frequency of the outdoor fan. The outdoor fan frequency is maintained when the temperature of the photovoltaic module is less than or equal to the third temperature threshold and greater than or equal to the fourth temperature threshold; and When the temperature of the photovoltaic module is lower than the fourth temperature threshold, the operating frequency of the outdoor fan is controlled according to the pressure at the exhaust port of the compressor of the at least one photovoltaic multi-split unit.

10. The fan control method according to claim 9, wherein, The third temperature threshold is equal to the first temperature threshold; and / or The fourth temperature threshold is equal to the second temperature threshold.

11. A fan control method, comprising: After the modular multi-split air conditioning system is started, if at least one photovoltaic multi-split unit in the system is not started, or if the system is in oil return or defrosting mode, the power generation of the photovoltaic modules of the at least one photovoltaic multi-split unit is obtained; and When the outdoor temperature of the at least one photovoltaic multi-split unit is greater than the outdoor temperature threshold, the operating status of the outdoor fan of the at least one photovoltaic multi-split unit is controlled based on the power generation of the photovoltaic modules.

12. The fan control method according to claim 11, wherein, Controlling the operating status of the outdoor fan includes: If the power generation of the photovoltaic module is greater than the first trigger power, then the outdoor fan is controlled to be turned on. If the power generation of the photovoltaic module is less than or equal to the first trigger power and greater than or equal to the second trigger power, then the outdoor wind turbine remains in its start / stop state; and If the power generation of the photovoltaic module is less than the second trigger power, the outdoor fan is controlled to stop.

13. A fan control device, comprising: The temperature acquisition module is configured to acquire the temperature of the photovoltaic modules of at least one photovoltaic multi-unit after the modular multi-unit system is started, when at least one photovoltaic multi-unit in the modular multi-unit system is not started, or when the modular multi-unit system is in the oil return state or defrosting state. A power acquisition module is configured to acquire the power generation of the photovoltaic module; as well as The fan control module is configured to control the operating state of the outdoor fan of the at least one photovoltaic multi-split unit based on the temperature and power generation of the photovoltaic modules when the outdoor temperature of the at least one photovoltaic multi-split unit is greater than the outdoor temperature threshold, wherein the outdoor fan is used to dissipate heat from the photovoltaic modules when it is in the start-up state.

14. A fan control device, comprising: The power acquisition module is configured to acquire the power generation of the photovoltaic modules of at least one photovoltaic multi-unit after the modular multi-unit system is started, when at least one photovoltaic multi-unit in the modular multi-unit system is not started, or when the modular multi-unit system is in the oil return state or defrosting state. as well as The wind turbine control module is configured to control the operating status of the outdoor wind turbine of the at least one photovoltaic multi-unit system based on the power generation of the photovoltaic modules when the outdoor temperature at the at least one photovoltaic multi-unit system is greater than the outdoor temperature threshold.

15. A fan control device, comprising: Memory; as well as A processor coupled to the memory, the processor being configured to execute the wind turbine control method as described in any one of claims 1 to 12 based on instructions stored in the memory.

16. A modular multi-split air conditioning system, comprising: The fan control device according to any one of claims 13 to 15.

17. A non-transitory computer-readable storage medium having stored thereon computer program instructions that, when executed by a processor, implement the wind turbine control method according to any one of claims 1 to 12.

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