A photovoltaic air conditioner operation control method, system, medium and device

Abstract

The application discloses a photovoltaic air conditioner operation control method, system, medium and device, which can detect the total power supply voltage and the proportion of commercial power voltage of the photovoltaic air conditioner at multiple moments in a first time period during the photovoltaic air conditioner is in a hybrid power supply mode, take whether the change of the total power supply voltage and the proportion of commercial power voltage of the photovoltaic air conditioner in the first time period meets corresponding conditions as a control basis, control the operation state of the PFC, avoid unconditionally controlling the PFC to be in an open state, and effectively reduce resource consumption generated by unconditionally controlling the PFC to be in the open state.

Description

Technical Field

[0001] This application relates to the field of air conditioner control technology, and in particular to a photovoltaic air conditioner operation control method, system, medium and device. Background Technology

[0002] With the development of science and technology, the operation and control technology of photovoltaic air conditioners is constantly improving.

[0003] Photovoltaic air conditioners have multiple power supply modes, such as mains power supply, solar power supply, and hybrid power supply. Among these, power factor correction (PFC) is a crucial function, used to efficiently convert AC power to DC power when the air conditioner is in mains power supply or hybrid power supply mode. Currently, existing technology keeps PFC on in hybrid power supply mode.

[0004] However, existing technologies that keep PFC on in hybrid power supply modes may result in higher resource consumption. Summary of the Invention

[0005] This application provides a photovoltaic air conditioner operation control method, system, medium, and device to solve the defect of the prior art in keeping the PFC on in a hybrid power supply mode, which may lead to excessive resource consumption, and to reduce resource consumption.

[0006] This application provides a photovoltaic air conditioner operation control method, including:

[0007] When it is determined that the photovoltaic air conditioner is in a hybrid power supply mode, the total power supply voltage and the proportion of the mains voltage of the photovoltaic air conditioner at multiple times in the first time period are detected.

[0008] If the total supply voltage at multiple times within the first time period meets the preset voltage change condition, and the proportion of mains voltage at multiple times within the first time period meets the preset voltage proportion change condition, the power factor correction (PFC) of the photovoltaic air conditioner is controlled to be turned on in the second time period; wherein the second time period is adjacent to the first time period.

[0009] If it is determined that the total supply voltage at multiple times during the first time period does not meet the preset voltage change condition, or if it is determined that the proportion of mains voltage at multiple times during the first time period does not meet the preset voltage proportion change condition, the PFC is controlled to be in the off state during the second time period.

[0010] Optionally, the duration of the first time period is a target duration, and the duration of the second time period is not less than the target duration; after the power factor correction (PFC) of the photovoltaic air conditioner is turned on during the second time period, or after the PFC is turned off during the second time period, the photovoltaic air conditioner operation control method further includes:

[0011] Determine the end time of the second time period;

[0012] The time obtained by subtracting the target duration from the end time is determined as the target time.

[0013] The time period from the target time to the end time is taken as the current first time period, and the step of detecting the total supply voltage and the proportion of mains voltage of the photovoltaic air conditioner at multiple times within the first time period is returned to perform.

[0014] Optionally, determining that the total supply voltage at multiple moments within the first time period meets a preset voltage change condition includes:

[0015] Based on the total power supply voltage at multiple moments within the first time period, determine the average total power supply voltage and the total power supply voltage fluctuation value of the photovoltaic air conditioner within the first time period;

[0016] If the average value of the total power supply voltage is not greater than the first preset voltage threshold and the fluctuation value of the total power supply voltage is not greater than the first preset fluctuation value, then the total power supply voltage of the photovoltaic air conditioner at multiple times during the first time period satisfies the preset voltage change condition.

[0017] Determining that the total supply voltage at multiple moments within the first time period does not meet the preset voltage change condition includes:

[0018] If the average value of the total power supply voltage is greater than the first preset voltage threshold, or the fluctuation value of the total power supply voltage is greater than the first preset fluctuation value, it is determined that the total power supply voltage of the photovoltaic air conditioner at multiple times during the first time period does not meet the preset voltage change condition.

[0019] Optionally, determining that the proportion of mains voltage at multiple times within the first time period meets a preset voltage proportion change condition includes:

[0020] Based on the mains voltage ratio at multiple moments within the first time period, the average mains voltage ratio and the mains voltage ratio fluctuation value of the photovoltaic air conditioner within the first time period are determined.

[0021] If the average value of the mains voltage ratio is greater than a preset ratio threshold and the fluctuation value of the mains voltage ratio is not greater than a second preset fluctuation value, then the mains voltage ratio at multiple times within the first time period satisfies the preset voltage ratio change condition.

[0022] Determining that the mains voltage percentage at multiple times within the first time period does not meet the preset voltage percentage change condition includes:

[0023] If the average value of the mains voltage ratio is not greater than the preset ratio threshold, or the fluctuation value of the mains voltage ratio is greater than the second preset fluctuation value, it is determined that the mains voltage ratio at multiple times within the first time period does not meet the preset voltage ratio change condition.

[0024] Optionally, the photovoltaic air conditioner operation control method further includes:

[0025] If it is determined that the photovoltaic air conditioner is in mains power supply mode, the mains power supply voltage of the photovoltaic air conditioner is detected;

[0026] If the mains power supply voltage is determined to be no greater than the second preset voltage threshold, the PFC is controlled to be in the on state;

[0027] If the mains power supply voltage is determined to be greater than the second preset voltage threshold, the PFC is controlled to be in the off state.

[0028] Optionally, the photovoltaic air conditioner operation control method further includes:

[0029] When it is determined that the photovoltaic air conditioner is in photovoltaic power supply mode, the PFC is controlled to be in the off state.

[0030] This application also proposes a photovoltaic air conditioner operation control system, comprising: a first detection unit, a first control unit, and a second control unit; wherein:

[0031] The first detection unit is used to detect the total power supply voltage and the proportion of mains voltage of the photovoltaic air conditioner at multiple times within a first time period when it is determined that the photovoltaic air conditioner is in a hybrid power supply mode.

[0032] The first control unit is configured to control the power factor correction (PFC) of the photovoltaic air conditioner to be in the on state during a second time period when it is determined that the total supply voltage at multiple times during the first time period meets a preset voltage change condition and the proportion of mains voltage at multiple times during the first time period meets a preset voltage proportion change condition; wherein, the second time period is adjacent to the first time period.

[0033] The second control unit is configured to control the PFC to be in a closed state during the second time period if it is determined that the total supply voltage at multiple times during the first time period does not meet the preset voltage change condition, or if it is determined that the proportion of mains voltage at multiple times during the first time period does not meet the preset voltage proportion change condition.

[0034] Optionally, the duration of the first time period is a target duration, and the duration of the second time period is not less than the target duration; the photovoltaic air conditioner operation control system further includes: a first determining unit, a second determining unit, and a triggering unit; wherein:

[0035] The first determining unit is configured to determine the end time of the second time period after the power factor correction (PFC) of the photovoltaic air conditioner is in the on state during the second time period, or after the PFC is in the off state during the second time period.

[0036] The second determining unit is used to determine the time obtained by subtracting the target duration from the end time as the target time;

[0037] The triggering unit is used to take the period from the target time to the end time as the current first time period and trigger the first detection unit.

[0038] This application also provides a computer-readable storage medium comprising a stored program, wherein the program, when executed, implements the photovoltaic air conditioner operation control method described above.

[0039] This application also provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the photovoltaic air conditioner operation control method described above through the computer program.

[0040] The photovoltaic air conditioner operation control method, system, medium, and device provided in this application can detect the total supply voltage and the proportion of mains voltage of the photovoltaic air conditioner at multiple moments within a first time period when the photovoltaic air conditioner is determined to be in a mixed power supply mode; when the total supply voltage at multiple moments within the first time period meets a preset voltage change condition and the proportion of mains voltage at multiple moments within the first time period meets a preset voltage proportion change condition, the power factor correction (PFC) of the photovoltaic air conditioner is controlled to be turned on in a second time period; wherein the second time period is adjacent to the first time period; when the total supply voltage at multiple moments within the first time period does not meet the preset voltage change condition, or the proportion of mains voltage at multiple moments within the first time period does not meet the preset voltage proportion change condition, the PFC is controlled to be turned off in the second time period.

[0041] This application can detect the total power supply voltage and the proportion of mains voltage of the photovoltaic air conditioner at multiple moments in the first time period during the period when the photovoltaic air conditioner is in a hybrid power supply mode. The changes in the total power supply voltage and the proportion of mains voltage of the photovoltaic air conditioner during the first time period are used as the basis for control to control the operation status of PFC. This avoids unconditionally controlling the PFC to be in the on state, and can effectively reduce the resource consumption caused by unconditionally controlling the PFC to be in the on state. Attached Figure Description

[0042] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0043] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is one of the flowcharts illustrating the photovoltaic air conditioner operation control method provided in the embodiments of this application;

[0045] Figure 2 This is a second schematic flowchart of the photovoltaic air conditioner operation control method provided in the embodiments of this application;

[0046] Figure 3 This is a schematic diagram of the structure of the photovoltaic air conditioner operation control system provided in the embodiments of this application;

[0047] Figure 4 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0048] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0049] It should be noted that the terms "first," "second," etc., in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0050] like Figure 1 As shown, this application proposes a first method for controlling the operation of a photovoltaic air conditioner, which may include the following steps:

[0051] S101. When it is determined that the photovoltaic air conditioner is in a hybrid power supply mode, the total power supply voltage and the proportion of the mains voltage of the photovoltaic air conditioner at multiple times in the first time period are detected.

[0052] It should be noted that this application can detect the operating parameters of the photovoltaic air conditioner during a certain period of time, and based on the operating parameters of the photovoltaic air conditioner during that period of time, determine whether to control the photovoltaic air conditioner to be in an on or off state in the next adjacent period of time.

[0053] Among them, the hybrid power supply mode is the power supply mode in which the photovoltaic air conditioner simultaneously receives power from the mains and solar energy.

[0054] Specifically, the first time period is the period during which the operating parameters of the photovoltaic air conditioner need to be tested. It should be noted that the specific duration and start time of the first time period can be determined by technicians based on the actual situation.

[0055] Optionally, the first time period can be a time period that starts at the current time and has a certain duration.

[0056] Optionally, the first time period can be a time period that starts at a certain time and lasts for a certain duration.

[0057] The mains voltage ratio is the ratio of the mains power supply voltage to the total power supply voltage.

[0058] Specifically, this application can detect the total power supply voltage and the proportion of mains voltage of the photovoltaic air conditioner at multiple moments within the first time period, and obtain the total power supply voltage and the proportion of mains voltage at multiple moments within the first time period.

[0059] This application allows for periodic detection of the total power supply voltage and the proportion of mains voltage for photovoltaic air conditioners during the first time period.

[0060] S102. If the total supply voltage at multiple times within the first time period meets the preset voltage change condition, and the proportion of mains voltage at multiple times within the first time period meets the preset voltage proportion change condition, the power factor correction (PFC) of the photovoltaic air conditioner is controlled to be turned on in the second time period; wherein, the second time period is adjacent to the first time period.

[0061] Among them, the preset voltage change condition can be a condition set for the change of the total power supply voltage in the first time period, and the preset voltage proportion change condition can be a condition set for the change of the proportion of the mains voltage in the first time period.

[0062] It should be noted that both the preset voltage change condition and the preset voltage percentage change condition can be set by technical personnel according to the actual situation, and this application does not limit them. For example, the preset voltage change condition can be that the total supply voltage at multiple times within the first time period is not greater than a certain voltage threshold, and the preset voltage percentage change condition can be that the mains voltage percentage at multiple times within the first time period is greater than a certain percentage threshold.

[0063] The second time period can be a time period that follows the first time period but is adjacent to it.

[0064] Specifically, this application can control the PFC to be on in the second period if the photovoltaic air conditioner's operating state in the first period meets the preset voltage change condition and the preset voltage percentage change condition.

[0065] S103. If the total supply voltage at multiple times during the first time period does not meet the preset voltage change condition, or if the proportion of mains voltage at multiple times during the first time period does not meet the preset voltage proportion change condition, the PFC is controlled to be in the off state during the second time period.

[0066] Specifically, this application can control the PFC to be in a closed state when the photovoltaic air conditioner's operating state does not meet the preset voltage change condition or the preset voltage percentage change condition during the first time period.

[0067] It should be noted that, during the period when the photovoltaic air conditioner is in the hybrid power supply mode, this application uses whether the change in the ratio of the total power supply voltage of the photovoltaic air conditioner to the mains voltage meets the corresponding conditions as the control basis to control the operation status of the PFC, so as to avoid unconditionally controlling the PFC to be in the on state, which can effectively reduce the resource consumption caused by unconditionally controlling the PFC to be in the on state.

[0068] It is understood that this application can effectively reduce the resource consumption generated by turning on PFC while ensuring efficient conversion of AC power to DC power by setting preset voltage change conditions and preset voltage percentage change conditions.

[0069] The photovoltaic air conditioner operation control method proposed in this application can detect the total supply voltage and the proportion of mains voltage at multiple moments within a first time period when the photovoltaic air conditioner is determined to be in a hybrid power supply mode. If the total supply voltage at multiple moments within the first time period meets preset voltage change conditions, and the proportion of mains voltage at multiple moments within the first time period meets preset voltage proportion change conditions, the power factor correction (PFC) of the photovoltaic air conditioner is controlled to be on in a second time period, where the second time period is adjacent to the first time period. If the total supply voltage at multiple moments within the first time period does not meet the preset voltage change conditions, or the proportion of mains voltage at multiple moments within the first time period does not meet the preset voltage proportion change conditions, the PFC is controlled to be off in the second time period. This application can use the changes in the total supply voltage and the proportion of mains voltage of the photovoltaic air conditioner meeting corresponding conditions as the control basis during the hybrid power supply mode to control the operation status of the PFC, avoiding unconditionally controlling the PFC to be on, and effectively reducing the resource consumption caused by unconditionally controlling the PFC to be on.

[0070] based on Figure 1 This application proposes a second photovoltaic air conditioner operation control method, in which the determination that the total power supply voltage at multiple times within a first time period meets preset voltage change conditions includes:

[0071] Based on the total power supply voltage at multiple moments within the first time period, determine the average total power supply voltage and the total power supply voltage fluctuation value of the photovoltaic air conditioner within the first time period.

[0072] If the average value of the total power supply voltage is not greater than the first preset voltage threshold and the fluctuation value of the total power supply voltage is not greater than the first preset fluctuation value, then the total power supply voltage of the photovoltaic air conditioner at multiple moments in the first time period meets the preset voltage change condition.

[0073] It was determined that the total supply voltage at multiple moments within the first time period did not meet the preset voltage change conditions, including:

[0074] If the average total power supply voltage is greater than the first preset voltage threshold, or the total power supply voltage fluctuation value is greater than the first preset fluctuation value, it is determined that the total power supply voltage of the photovoltaic air conditioner at multiple moments within the first time period does not meet the preset voltage change condition.

[0075] The total supply voltage fluctuation value can be used to measure the stability of the total supply voltage during the first time period. Optionally, the total supply voltage fluctuation value can be the variance or standard deviation of the total supply voltage at multiple times during the first time period.

[0076] Both the first preset voltage threshold and the first preset fluctuation value can be set by technicians according to actual conditions. For example, the first preset voltage threshold can be 110% of the rated voltage of the photovoltaic air conditioner.

[0077] It is understood that the preset voltage change conditions include that the average value of the total power supply voltage in the first time period is not greater than the first preset voltage threshold, and the fluctuation value of the total power supply voltage in the first time period is not greater than the first preset fluctuation value.

[0078] It should be noted that when the average value of the total power supply voltage is not greater than the first preset voltage threshold and the fluctuation value of the total power supply voltage is not greater than the first preset fluctuation value, that is, when the preset voltage change conditions are met, the total power supply voltage in the first time period can be considered not to exceed the limit. If PFC is turned on at this time, PFC will not operate under the condition of exceeding the voltage limit, thus avoiding PFC overheating.

[0079] If the average total supply voltage is greater than the first preset voltage threshold, or the total supply voltage fluctuation is greater than the first preset fluctuation value, i.e. the preset voltage change condition is not met, it can be considered that the total supply voltage in the first time period is over the limit or the voltage fluctuation is large. If PFC is turned on at this time, PFC may operate under the over-limit voltage condition, which may cause PFC overheating.

[0080] Optionally, in this method, determining that the proportion of mains voltage at multiple times within the first time period satisfies a preset voltage proportion change condition includes:

[0081] Based on the mains voltage ratio at multiple moments within the first time period, the average mains voltage ratio and the mains voltage ratio fluctuation value of the photovoltaic air conditioner within the first time period are determined.

[0082] If the average value of the mains voltage ratio is greater than the preset ratio threshold and the fluctuation value of the mains voltage ratio is not greater than the second preset fluctuation value, the mains voltage ratio at multiple times within the first time period is determined to meet the preset voltage ratio change conditions.

[0083] It was determined that the mains voltage percentage at multiple times within the first time period did not meet the preset voltage percentage change conditions, including:

[0084] If the average value of the mains voltage ratio is not greater than the preset ratio threshold, or the fluctuation value of the mains voltage ratio is greater than the second preset fluctuation value, it is determined that the mains voltage ratio at multiple times within the first time period does not meet the preset voltage ratio change condition.

[0085] The mains voltage percentage fluctuation value can be used to measure the stability of the mains voltage during the first time period. Optionally, the mains voltage percentage fluctuation value can be the variance or standard deviation of the mains voltage during the first time period.

[0086] It is understandable that the preset voltage percentage change conditions include the average value of the mains voltage percentage being greater than the preset percentage threshold, and the fluctuation value of the mains voltage percentage not being greater than the second preset fluctuation value.

[0087] It should be noted that when the average mains voltage percentage is greater than the preset percentage threshold and the mains voltage percentage fluctuation is not greater than the second preset fluctuation value, that is, when the preset voltage percentage change condition is met, the mains voltage percentage can be considered to exceed the limit. At this time, turning on PFC can be used to efficiently convert more AC power to DC power, which can make better use of PFC's working performance and improve the utilization rate of PFC.

[0088] If the average value of the mains voltage percentage is not greater than the preset percentage threshold, or the fluctuation value of the mains voltage percentage is greater than the second preset fluctuation value, i.e. the preset voltage percentage change condition is not met, it can be considered that the mains voltage percentage has not exceeded the limit, or the mains voltage fluctuation is large. If PFC is turned on at this time, the working performance of PFC may not be fully utilized, resulting in unnecessary consumption of resources.

[0089] The photovoltaic air conditioner operation control method proposed in this application can effectively determine whether the operating parameters of the photovoltaic air conditioner meet the preset voltage ratio change conditions and preset voltage ratio change conditions, thereby effectively ensuring the subsequent control of the PFC operation status.

[0090] like Figure 2 As shown, this application proposes a third method for controlling the operation of a photovoltaic air conditioner. In this method, the duration of the first time period is a target duration, and the duration of the second time period is not less than the target duration. After step S102 or S103, the method may include the following steps:

[0091] S201. Determine the end time of the second time period.

[0092] S202. The time obtained by subtracting the target duration from the end time is determined as the target time.

[0093] S203. Take the time period from the target time to the end time as the current first time period and return to the execution step S101.

[0094] The end time is the last moment of the second time period.

[0095] Specifically, after determining the PFC operating status in the second time period, this application can detect and judge again whether the operating parameters of the photovoltaic air conditioner meet the corresponding conditions in the corresponding time period at the end of the second time period, and determine the PFC operating status in the next time period based on the judgment result, thereby realizing the determination and control of the PFC operating status at each time.

[0096] The photovoltaic air conditioner operation control method proposed in this application can determine and control the PFC operation status at various times in a hybrid power supply mode.

[0097] based on Figure 1 This application proposes a fourth method for controlling the operation of a photovoltaic air conditioner. This method may further include:

[0098] If the photovoltaic air conditioner is confirmed to be in mains power supply mode, the mains power supply voltage of the photovoltaic air conditioner is detected.

[0099] If the mains power supply voltage is determined to be no greater than the second preset voltage threshold, the PFC is controlled to be in the on state;

[0100] If the mains power supply voltage is determined to be greater than the second preset voltage threshold, the PFC is controlled to be in the off state.

[0101] The second preset voltage threshold can be set by technicians according to the actual situation, and this application does not limit it.

[0102] It should be noted that if the mains power supply voltage is greater than the second preset voltage threshold, the PFC may overheat if it is turned on. In this case, the PFC should be turned off to avoid overheating. If the mains power supply voltage is not greater than the second preset voltage threshold, this application can control the PFC to be turned on, thereby improving the AC-to-DC conversion efficiency while avoiding overheating.

[0103] The photovoltaic air conditioner operation control method proposed in this application can control the operation status of PFC based on the mains power supply voltage in the mains power supply mode, thereby effectively realizing the control of the PFC operation status.

[0104] based on Figure 1 This application proposes a fifth method for controlling the operation of a photovoltaic air conditioner. This method may further include:

[0105] When the photovoltaic air conditioner is in photovoltaic power supply mode, the control PFC is in the off state.

[0106] Understandably, in photovoltaic power supply mode, the photovoltaic air conditioner is powered by DC power, so there is no need to turn on PFC and PFC can be kept off.

[0107] The photovoltaic air conditioner operation control method proposed in this application can control the PFC to remain in the off state under photovoltaic power supply mode, effectively realizing the control of the PFC operation status.

[0108] and Figure 1 The method shown corresponds to, for example Figure 3 As shown, this application proposes a photovoltaic air conditioner operation control system, including: a first detection unit 301, a first control unit 302, and a second control unit 303; wherein:

[0109] The first detection unit 301 is used to detect the total power supply voltage and the proportion of mains voltage of the photovoltaic air conditioner at multiple times in a first time period when it is determined that the photovoltaic air conditioner is in a hybrid power supply mode.

[0110] The first control unit 302 is configured to control the power factor correction (PFC) of the photovoltaic air conditioner to be in the on state during a second time period when it is determined that the total supply voltage at multiple times during the first time period meets a preset voltage change condition and the proportion of mains voltage at multiple times during the first time period meets a preset voltage proportion change condition; wherein, the second time period is adjacent to the first time period.

[0111] The second control unit 303 is configured to control the PFC to be in a closed state during the second time period if it is determined that the total supply voltage at multiple times during the first time period does not meet the preset voltage change condition, or if it is determined that the proportion of mains voltage at multiple times during the first time period does not meet the preset voltage proportion change condition.

[0112] Optionally, the duration of the first time period is a target duration, and the duration of the second time period is not less than the target duration; the photovoltaic air conditioner operation control system further includes: a first determining unit, a second determining unit, and a triggering unit; wherein:

[0113] The first determining unit is configured to determine the end time of the second time period after the power factor correction (PFC) of the photovoltaic air conditioner is in the on state during the second time period, or after the PFC is in the off state during the second time period.

[0114] The second determining unit is used to determine the target time as the time obtained by subtracting the target duration from the end time;

[0115] The triggering unit is used to take the time period from the target time to the end time as the current first time period and trigger the first detection unit 301.

[0116] Optionally, the total supply voltage at multiple moments within the first time period is determined to meet a preset voltage change condition, which is set as follows:

[0117] Based on the total power supply voltage at multiple moments within the first time period, determine the average total power supply voltage and the total power supply voltage fluctuation value of the photovoltaic air conditioner within the first time period;

[0118] If the average value of the total power supply voltage is not greater than the first preset voltage threshold and the fluctuation value of the total power supply voltage is not greater than the first preset fluctuation value, then the total power supply voltage of the photovoltaic air conditioner at multiple times during the first time period satisfies the preset voltage change condition.

[0119] If the total supply voltage at multiple moments within the first time period does not meet the preset voltage change condition, the setting is as follows:

[0120] If the average value of the total power supply voltage is greater than the first preset voltage threshold, or the fluctuation value of the total power supply voltage is greater than the first preset fluctuation value, it is determined that the total power supply voltage of the photovoltaic air conditioner at multiple times during the first time period does not meet the preset voltage change condition.

[0121] Optionally, the proportion of mains voltage at multiple times within the first time period is determined to meet a preset voltage proportion change condition, which is set as follows:

[0122] Based on the mains voltage ratio at multiple moments within the first time period, the average mains voltage ratio and the mains voltage ratio fluctuation value of the photovoltaic air conditioner within the first time period are determined.

[0123] If the average value of the mains voltage ratio is greater than a preset ratio threshold and the fluctuation value of the mains voltage ratio is not greater than a second preset fluctuation value, then the mains voltage ratio at multiple times within the first time period satisfies the preset voltage ratio change condition.

[0124] If the mains voltage percentage at multiple times within the first time period does not meet the preset voltage percentage change condition, the setting is as follows:

[0125] If the average value of the mains voltage ratio is not greater than the preset ratio threshold, or the fluctuation value of the mains voltage ratio is greater than the second preset fluctuation value, it is determined that the mains voltage ratio at multiple times within the first time period does not meet the preset voltage ratio change condition.

[0126] Optionally, the photovoltaic air conditioner operation control system further includes: a second detection unit, a third control unit, and a fourth control unit;

[0127] The second detection unit is used to detect the mains power supply voltage of the photovoltaic air conditioner when it is determined that the photovoltaic air conditioner is in mains power supply mode;

[0128] The third control unit is used to control the PFC to be in the on state when it is determined that the mains power supply voltage is not greater than the second preset voltage threshold.

[0129] The fourth control unit is used to control the PFC to be in a closed state when it is determined that the mains power supply voltage is greater than the second preset voltage threshold.

[0130] Optionally, the photovoltaic air conditioner operation control system may also include: a fifth control unit;

[0131] The fifth control unit is used to control the PFC to be in a closed state when it is determined that the photovoltaic air conditioner is in photovoltaic power supply mode.

[0132] The photovoltaic air conditioner operation control system proposed in this application can detect the total supply voltage and the proportion of mains voltage at multiple moments within a first time period when the photovoltaic air conditioner is determined to be in a hybrid power supply mode. If the total supply voltage at multiple moments within the first time period meets preset voltage change conditions, and the proportion of mains voltage at multiple moments within the first time period meets preset voltage proportion change conditions, the power factor correction (PFC) of the photovoltaic air conditioner is controlled to be on in a second time period, where the second time period is adjacent to the first time period. If the total supply voltage at multiple moments within the first time period does not meet the preset voltage change conditions, or the proportion of mains voltage at multiple moments within the first time period does not meet the preset voltage proportion change conditions, the PFC is controlled to be off in the second time period. This application can use the changes in the total supply voltage and the proportion of mains voltage of the photovoltaic air conditioner meeting corresponding conditions as the control basis during the hybrid power supply mode to control the operation status of the PFC, avoiding unconditionally controlling the PFC to be on, and effectively reducing the resource consumption caused by unconditionally controlling the PFC to be on.

[0133] Figure 4 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 4 As shown, the electronic device may include: a processor 410, a communication interface 420, a memory 430, and a communication bus 440, wherein the processor 410, the communication interface 420, and the memory 430 communicate with each other via the communication bus 440. The processor 410 can call logical instructions in the memory 430 to execute a photovoltaic air conditioner operation control method, which includes:

[0134] When it is determined that the photovoltaic air conditioner is in a hybrid power supply mode, the total power supply voltage and the proportion of the mains voltage of the photovoltaic air conditioner at multiple times in the first time period are detected.

[0135] If the total supply voltage at multiple times within the first time period meets the preset voltage change condition, and the proportion of mains voltage at multiple times within the first time period meets the preset voltage proportion change condition, the power factor correction (PFC) of the photovoltaic air conditioner is controlled to be turned on in the second time period; wherein the second time period is adjacent to the first time period.

[0136] If it is determined that the total supply voltage at multiple times during the first time period does not meet the preset voltage change condition, or if it is determined that the proportion of mains voltage at multiple times during the first time period does not meet the preset voltage proportion change condition, the PFC is controlled to be in the off state during the second time period.

[0137] Furthermore, the logical instructions in the aforementioned memory 430 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 this application, in essence, or the part that contributes to the prior art, or a portion 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 in the various embodiments of this application. 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.

[0138] On the other hand, this application also provides a computer program product, which includes a computer program that can be stored on a computer-readable storage medium. When the computer program is executed by a processor, the computer is able to execute the photovoltaic air conditioner operation control method provided by the above methods, the method including:

[0139] When it is determined that the photovoltaic air conditioner is in a hybrid power supply mode, the total power supply voltage and the proportion of the mains voltage of the photovoltaic air conditioner at multiple times in the first time period are detected.

[0140] If the total supply voltage at multiple times within the first time period meets the preset voltage change condition, and the proportion of mains voltage at multiple times within the first time period meets the preset voltage proportion change condition, the power factor correction (PFC) of the photovoltaic air conditioner is controlled to be turned on in the second time period; wherein the second time period is adjacent to the first time period.

[0141] If it is determined that the total supply voltage at multiple times during the first time period does not meet the preset voltage change condition, or if it is determined that the proportion of mains voltage at multiple times during the first time period does not meet the preset voltage proportion change condition, the PFC is controlled to be in the off state during the second time period.

[0142] Furthermore, this application also provides a computer-readable storage medium, which includes a stored program, wherein the program, when executed, performs the photovoltaic air conditioner operation control method provided by the above-described methods, the method comprising:

[0143] When it is determined that the photovoltaic air conditioner is in a hybrid power supply mode, the total power supply voltage and the proportion of the mains voltage of the photovoltaic air conditioner at multiple times in the first time period are detected.

[0144] If the total supply voltage at multiple times within the first time period meets the preset voltage change condition, and the proportion of mains voltage at multiple times within the first time period meets the preset voltage proportion change condition, the power factor correction (PFC) of the photovoltaic air conditioner is controlled to be turned on in the second time period; wherein the second time period is adjacent to the first time period.

[0145] If it is determined that the total supply voltage at multiple times during the first time period does not meet the preset voltage change condition, or if it is determined that the proportion of mains voltage at multiple times during the first time period does not meet the preset voltage proportion change condition, the PFC is controlled to be in the off state during the second time period.

[0146] 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.

[0147] 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.

[0148] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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. Such 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 this application.

Claims

1. A method for controlling the operation of a photovoltaic air conditioner, characterized in that, include: When it is determined that the photovoltaic air conditioner is in a hybrid power supply mode, the total power supply voltage and the proportion of the mains voltage of the photovoltaic air conditioner at multiple moments in the first time period are detected. The hybrid power supply mode is the power supply mode in which the photovoltaic air conditioner simultaneously receives power from the mains and solar power. If the total supply voltage at multiple moments within the first time period meets the preset voltage change condition, and the proportion of mains voltage at multiple moments within the first time period meets the preset voltage proportion change condition, the power factor correction (PFC) of the photovoltaic air conditioner is controlled to be turned on in the second time period; wherein, the second time period is the period after the first time period and adjacent to the first time period. If it is determined that the total supply voltage at multiple times during the first time period does not meet the preset voltage change condition, or if it is determined that the mains voltage ratio at multiple times during the first time period does not meet the preset voltage ratio change condition, the PFC is controlled to be in the off state during the second time period. Determining that the total power supply voltage at multiple moments within the first time period meets a preset voltage change condition includes: determining the average total power supply voltage and the total power supply voltage fluctuation value of the photovoltaic air conditioner within the first time period based on the total power supply voltage at multiple moments within the first time period; and determining that the total power supply voltage at multiple moments within the first time period meets the preset voltage change condition if the average total power supply voltage is not greater than a first preset voltage threshold and the total power supply voltage fluctuation value is not greater than a first preset fluctuation value. Determining that the total power supply voltage at multiple moments within the first time period does not meet the preset voltage change condition includes: determining that the total power supply voltage of the photovoltaic air conditioner does not meet the preset voltage change condition at multiple moments within the first time period when the average value of the total power supply voltage is greater than the first preset voltage threshold, or the fluctuation value of the total power supply voltage is greater than the first preset fluctuation value. Determining that the mains voltage ratio at multiple moments within the first time period meets a preset voltage ratio change condition includes: determining the average mains voltage ratio and the mains voltage ratio fluctuation value of the photovoltaic air conditioner within the first time period based on the mains voltage ratio at multiple moments within the first time period; and determining that the mains voltage ratio at multiple moments within the first time period meets the preset voltage ratio change condition when the average mains voltage ratio is greater than a preset ratio threshold and the mains voltage ratio fluctuation value is not greater than a second preset fluctuation value. Determining that the mains voltage ratio at multiple times within the first time period does not meet the preset voltage ratio change condition includes: determining that the mains voltage ratio at multiple times within the first time period does not meet the preset voltage ratio change condition when the average value of the mains voltage ratio is not greater than the preset ratio threshold, or the fluctuation value of the mains voltage ratio is greater than the second preset fluctuation value.

2. The photovoltaic air conditioner operation control method according to claim 1, characterized in that, The duration of the first time period is a target duration, and the duration of the second time period is not less than the target duration; after the power factor correction (PFC) of the photovoltaic air conditioner is turned on during the second time period, or after the PFC is turned off during the second time period, the photovoltaic air conditioner operation control method further includes: Determine the end time of the second time period; The time obtained by subtracting the target duration from the end time is determined as the target time. The time period from the target time to the end time is taken as the current first time period, and the step of detecting the total supply voltage and the proportion of mains voltage of the photovoltaic air conditioner at multiple times within the first time period is returned to perform.

3. The photovoltaic air conditioner operation control method according to claim 1, characterized in that, The photovoltaic air conditioner operation control method also includes: If it is determined that the photovoltaic air conditioner is in mains power supply mode, the mains power supply voltage of the photovoltaic air conditioner is detected; If the mains power supply voltage is determined to be no greater than the second preset voltage threshold, the PFC is controlled to be in the on state; If the mains power supply voltage is determined to be greater than the second preset voltage threshold, the PFC is controlled to be in the off state.

4. The photovoltaic air conditioner operation control method according to claim 1, characterized in that, The photovoltaic air conditioner operation control method also includes: When it is determined that the photovoltaic air conditioner is in photovoltaic power supply mode, the PFC is controlled to be in the off state.

5. A photovoltaic air conditioner operation control system, characterized in that, include: A first detection unit, a first control unit, and a second control unit; wherein: The first detection unit is used to detect the total power supply voltage and the proportion of mains voltage of the photovoltaic air conditioner at multiple times within a first time period when it is determined that the photovoltaic air conditioner is in a hybrid power supply mode. The first control unit is configured to control the power factor correction (PFC) of the photovoltaic air conditioner to be in the on state during a second time period when it is determined that the total supply voltage at multiple times during the first time period meets a preset voltage change condition and the proportion of mains voltage at multiple times during the first time period meets a preset voltage proportion change condition; wherein, the second time period is adjacent to the first time period. The second control unit is configured to control the PFC to be in a closed state during the second time period if it is determined that the total supply voltage at multiple times during the first time period does not meet the preset voltage change condition, or if it is determined that the proportion of mains voltage at multiple times during the first time period does not meet the preset voltage proportion change condition.

6. The photovoltaic air conditioner operation control system according to claim 5, characterized in that, The duration of the first time period is the target duration, and the duration of the second time period is not less than the target duration; the photovoltaic air conditioner operation control system further includes: a first determining unit, a second determining unit, and a triggering unit; wherein: The first determining unit is configured to determine the end time of the second time period after the power factor correction (PFC) of the photovoltaic air conditioner is in the on state during the second time period, or after the PFC is in the off state during the second time period. The second determining unit is used to determine the time obtained by subtracting the target duration from the end time as the target time; The triggering unit is used to take the period from the target time to the end time as the current first period and trigger the first detection unit.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein the program, when executed, performs the photovoltaic air conditioner operation control method according to any one of claims 1 to 4.

8. An electronic device comprising a memory and a processor, characterized in that, The memory stores a computer program, and the processor is configured to execute the photovoltaic air conditioner operation control method according to any one of claims 1 to 4 through the computer program.

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