A compressor control method and device, electronic equipment and storage medium

Abstract

The present application relates to a kind of compressor control method, device, electronic equipment and storage medium, wherein, compressor control method includes: determine whether the compressor driver enters the limited frequency drop alarm state;If the compressor driver enters the limited frequency drop alarm state, obtain the first actual operating frequency value of compressor after frequency drop;According to the first actual operating frequency value, determine the target operating frequency of the compressor;Control the compressor according to the target operating frequency runs.This application embodiment can be in the compressor operation period due to driver control instability or the limited frequency drop factor of driver causes the sudden drop of actual operating frequency of compressor, passive matching correction processing is carried out to target operating frequency by main controller, can effectively guarantee the stable operation of whole machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electromechanical technology, and in particular to a compressor control method and device, an electronic device, and a storage medium. BACKGROUND

[0002] Under the current industry status, the frequency regulation of the variable frequency compressor is based on the control of the ambient temperature, and according to different air conditioning units, the fan, the electronic expansion valve and the like are combined for comprehensive control. On the control, the main controller and the compressor driver are usually used to complete the control of the frequency of the compressor, the main controller is responsible for the comprehensive processing of complex control logic conditions of the whole machine, such as the ambient temperature, the fan speed, the opening degree of the electronic expansion valve, the system overheating degree and the like, and finally calculates the target operating frequency of the compressor required, and sends the target operating frequency to the compressor driver in the form of a communication command for execution, and the compressor driver is responsible for the frequency regulation of the compressor and the related driver fault protection processing.

[0003] Generally, the larger the power of the variable frequency driver is, the more difficult it is to achieve stable control. When the compressor is running at a high frequency, the actual operating frequency often suddenly drops, and the main reason is usually that the variable frequency driver control is unstable, such as IPM module overheating, or compressor driving current is too large, or bus voltage cliff drops, and the like. For example, the current target frequency is 100HZ, and the actual operating frequency of the compressor is also 100HZ. When the frequency suddenly drops during abnormal frequency regulation, for example, the actual frequency drops from 100HZ to 50HZ, it can be understood that the actual operating frequency of the compressor driver cannot be controlled by the target operating frequency of the main controller. At this time, the target frequency is 50HZ different from the actual frequency. If the target operating frequency is not corrected in time, the compressor will immediately increase the frequency again to match the target frequency after the frequency drops, which will cause a large frequency increase. More than that, when the normal regulation period arrives, the target frequency may further increase, which will cause a larger difference between the target frequency and the actual operating frequency, and the system control of the whole machine is extremely unstable, which is easy to cause the actual operating frequency of the compressor to fluctuate for a long time and cause the compressor to be protected and stopped, which is very risky. SUMMARY

[0004] In order to solve the technical problem that the actual operating frequency of the compressor suddenly drops due to unstable driver control or the frequency reduction limit of the variable frequency driver during the operation of the compressor, which further causes the current actual operating frequency to be inconsistent with the target operating frequency or the difference to be too large, and further causes the compressor frequency to fluctuate frequently and sharply, which is easy to cause the compressor to be protected and stopped, the present application provides a compressor control method and device, an electronic device and a storage medium.

[0005] In a first aspect, the present application provides a compressor control method, comprising:

[0006] Determine if the compressor driver has entered the frequency reduction alarm state;

[0007] If the compressor driver enters the frequency reduction alarm state, obtain the first actual operating frequency value of the compressor after the frequency drop;

[0008] The target operating frequency of the compressor is determined based on the first actual operating frequency value;

[0009] The compressor is controlled to operate at the target operating frequency.

[0010] Optionally, determining the target operating frequency of the compressor based on the actual operating frequency value includes:

[0011] Based on the actual operating frequency value and the preset weighting coefficient, a new target operating frequency is determined;

[0012] The new target operating frequency value is used to determine the target operating frequency of the compressor.

[0013] Optionally, determine whether the compressor drive has been triggered into a frequency throttling alarm state, including:

[0014] Detect whether a first frequency reduction alarm signal is received from the compressor driver;

[0015] If the first frequency reduction alarm signal is received, it is determined that the compressor driver has entered the frequency reduction alarm state.

[0016] Optionally, the method further includes:

[0017] After the compressor driver enters the frequency reduction alarm state, determine whether the compressor driver should release the frequency reduction alarm state;

[0018] If the compressor driver does not clear the frequency reduction alarm state, return to the step of obtaining the first actual operating frequency value of the compressor after the frequency drop.

[0019] Optionally, the method further includes:

[0020] If the compressor driver clears the frequency reduction alarm state, it controls the compressor to perform frequency increase or frequency reduction adjustment based on the target operating frequency.

[0021] Optionally, determining whether the compressor driver has cleared the frequency reduction alarm state includes:

[0022] Within a preset time period after the compressor driver enters the frequency reduction alarm state, determine whether a second frequency reduction alarm signal is received from the compressor driver;

[0023] If the second frequency reduction alarm signal is not received, it is determined that the compressor driver has lifted the frequency reduction alarm state.

[0024] Optionally, determining whether the compressor driver has cleared the frequency reduction alarm state further includes:

[0025] If the second frequency reduction alarm signal is received, it is determined that the compressor driver has not cleared the frequency reduction alarm state.

[0026] Secondly, this application provides a compressor frequency control device, comprising:

[0027] The first determining module is used to determine whether the compressor driver has entered the frequency reduction alarm state;

[0028] The first acquisition module is used to acquire the first actual operating frequency value of the compressor after the frequency drop if the compressor driver enters the frequency reduction alarm state.

[0029] The second determining module is used to determine the target operating frequency of the compressor based on the first actual operating frequency value;

[0030] The control module is used to control the compressor to operate at the target operating frequency.

[0031] Optionally, the second determining module includes:

[0032] The first determining unit is used to determine a new target operating frequency based on the actual operating frequency value and a preset weighting coefficient.

[0033] The second determining unit is used to determine the target operating frequency of the compressor using the new target operating frequency value.

[0034] Optionally, the first determining module includes:

[0035] The detection unit is used to detect whether a first frequency reduction alarm signal is received from the compressor driver;

[0036] The third determining unit is used to determine that the compressor driver has entered the frequency reduction alarm state if the first frequency reduction alarm signal is received.

[0037] Optionally, the device further includes:

[0038] The fourth determining unit is used to determine whether the compressor driver has lifted the frequency reduction alarm state after the compressor driver enters the frequency reduction alarm state;

[0039] The return execution unit is used to return to the step of obtaining the first actual operating frequency value of the compressor after the frequency drop if the compressor driver has not cleared the frequency reduction alarm state.

[0040] Optionally, the device further includes:

[0041] The control unit is used to control the compressor to perform frequency increase or decrease adjustment based on the target operating frequency if the compressor driver releases the frequency reduction alarm state.

[0042] Optionally, the fourth determining unit includes:

[0043] The first determining subunit is used to determine whether a second frequency reduction alarm signal is received from the compressor driver within a preset time period after the compressor driver enters the frequency reduction alarm state.

[0044] The second determining subunit is used to determine that the compressor driver has lifted the frequency reduction alarm state if the second frequency reduction alarm signal is not received.

[0045] Optionally, the fourth determining unit further includes:

[0046] The third determining subunit is used to determine, if the second frequency reduction alarm signal is received, that the compressor driver has not cleared the frequency reduction alarm state.

[0047] Thirdly, this application provides an electronic device, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus;

[0048] Memory, used to store computer programs;

[0049] When the processor executes a program stored in memory, it implements the compressor control method described in any of the first aspects.

[0050] Fourthly, this application provides a computer-readable storage medium storing a program for a compressor control method, wherein when the program for the compressor control method is executed by a processor, it implements the steps of the compressor control method described in any of the first aspects.

[0051] The technical solutions provided in this application have the following advantages compared with the prior art:

[0052] This application embodiment obtains the first actual operating frequency value of the compressor after a frequency drop when the compressor driver enters the frequency throttling alarm state. Based on this first actual operating frequency value, the target operating frequency of the compressor is determined, and the compressor is controlled to operate at the target operating frequency. This achieves passive matching and correction processing of the target operating frequency when the compressor's actual operating frequency suddenly drops due to driver control instability or driver frequency throttling factors during compressor operation. This effectively avoids the risk to the entire control system caused by a large difference between the target operating frequency and the actual operating frequency or a continuous large-scale frequency increase in the next frequency adjustment cycle. It also avoids the continuous fluctuation of the compressor's operating frequency caused by a dead loop, effectively ensuring stable operation of the entire machine. This has been repeatedly verified in actual practice and effectively solves a common problem in the industry. Attached Figure Description

[0053] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0054] To more clearly illustrate the technical solutions in the embodiments of the present invention 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.

[0055] Figure 1 A flowchart of a compressor control method provided in an embodiment of this application;

[0056] Figure 2 A flowchart illustrating another compressor control method provided in this application embodiment;

[0057] Figure 3 A flowchart illustrating a compressor control method in a practical application provided by an embodiment of this application;

[0058] Figure 4 A structural diagram of a compressor control device provided in an embodiment of this application;

[0059] Figure 5 This is a structural diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0061] To understand the ingenuity of this design, it's essential to first grasp the current compressor drive frequency adjustment process and the risks associated with high-frequency operating frequency drops. Let's begin with an example. When an air conditioning unit is powered on, if the set temperature is higher than the ambient temperature, the compressor will start. The startup process involves the main controller sending a compressor start command and the target operating frequency to the compressor driver. The compressor driver then controls the compressor to start and increases its operating frequency from zero at a certain rate (e.g., 1 Hz / second) to the initial operating frequency (i.e., the oil return frequency, which is beneficial for the stability of the inverter driver. This frequency value needs to be determined based on the specific compressor model and is a compressor-specific parameter). After stable operation for a period, it is adjusted back to the target operating frequency. The next time the frequency is adjusted, the main controller calculates a new target operating frequency based on the current real-time ambient temperature and other relevant conditions such as fan speed, electronic expansion valve opening, and compressor inlet and outlet pressures, and sends this new frequency to the compressor driver. The compressor driver then adjusts the frequency again, and this cycle repeats. As the target frequency calculated by the main controller increases each time, the compressor driver will also follow the main controller's instructions to increase the frequency, potentially reaching a high-frequency operating state.

[0062] Generally, low-power drives are already very mature and rarely experience frequency drop issues. However, this problem is more prominent in high-power drives. The higher the power of the variable frequency drive, the more difficult it is to achieve stable control. When the compressor is running at high frequency, the actual operating frequency often drops suddenly, resulting in a large difference between the target frequency and the actual operating frequency. This makes the control of the entire system extremely unstable, which can easily cause the actual operating frequency of the compressor to fluctuate for a long time, leading to compressor failure protection shutdown, which poses a great risk.

[0063] To ensure reliable and stable operation of the compressor drive, the controller tries to avoid significant frequency increases and decreases, especially those that cause instability in the compressor drive (e.g., overcurrent protection) and overall system instability (e.g., overshooting due to frequency adjustment lag). Therefore, during target frequency adjustment, the controller appropriately limits the amplitude of each adjustment; this can be called active frequency limiting. Active frequency limiting is a conventional approach, which can be understood as the main controller actively adjusting the target operating frequency based on temperature and humidity control logic, with the compressor drive passively executing the command. However, this approach has drawbacks. When the compressor drive cannot effectively execute the main controller's control commands, a mismatch between the target and actual operating frequencies occurs, leading to significant frequency increases during subsequent compressor frequency adjustments. This situation is detrimental to the stable operation of the entire system.

[0064] There is currently no mature, universal, and publicly available control method in the industry for passive frequency limiting operation of the main controller. Passive frequency limiting refers to the compressor driver automatically lowering the actual operating frequency when it detects a need for frequency limiting (e.g., the drive module temperature is too high and approaching the protection value, or the bus current is too high and approaching the protection value), and sending the frequency limiting signal to the main controller in the form of communication.

[0065] Based on the above, embodiments of this application provide a compressor control method, device, electronic device, and storage medium, wherein the compressor control method can be applied to the main controller of a compressor.

[0066] like Figure 1 As shown, this application provides a compressor control method, which may include the following steps:

[0067] Step S101: Determine whether the compressor driver has entered the frequency reduction alarm state;

[0068] In this embodiment, the frequency reduction alarm state refers to the state in which the compressor driver detects a frequency reduction signal, such as when the temperature of the drive module is too high and closes to the protection value, or when the bus current is too high and closes to the protection value, and then automatically reduces the actual operating frequency.

[0069] When the compressor driver itself experiences a frequency throttling signal, it will send the frequency throttling signal to the main controller via communication. Therefore, in one embodiment of this application, determining whether the compressor driver has been triggered to enter the frequency throttling alarm state includes: detecting whether a first frequency throttling alarm signal is received from the compressor driver; if the first frequency throttling alarm signal is received, determining that the compressor driver has entered the frequency throttling alarm state.

[0070] Step S102: If the compressor driver enters the frequency reduction alarm state, obtain the first actual operating frequency value of the compressor after the frequency drop.

[0071] When the compressor driver enters the frequency reduction alarm state, the actual operating frequency of the compressor, which is operating at high frequency, suddenly drops. The actual operating frequency of the compressor at this time is read, which is the first actual operating frequency value.

[0072] Step S103: Determine the target operating frequency of the compressor based on the first actual operating frequency value;

[0073] In this step, a new target operating frequency value can be determined based on the first actual operating frequency value, and the original target operating frequency value can be replaced by the new target operating frequency value. That is, the new target operating frequency value is used as the target operating frequency of the compressor.

[0074] In one embodiment of this application, determining the target operating frequency of the compressor based on the actual operating frequency value includes: determining a new target operating frequency based on the actual operating frequency value and a preset weighting coefficient; and using the new target operating frequency value as the target operating frequency of the compressor.

[0075] In this embodiment of the application, the preset weighting coefficient can be less than or equal to 1. When the preset weighting coefficient is 1, the first actual operating frequency value can be directly used as the target operating frequency of the compressor.

[0076] Step S104: Control the compressor to operate at the target operating frequency.

[0077] In this step, the compressor can be controlled to always operate at the target operating frequency, that is, to always keep the target operating frequency basically consistent with the actual operating frequency.

[0078] This application embodiment obtains the first actual operating frequency value of the compressor after a frequency drop when the compressor driver enters the frequency throttling alarm state. Based on this first actual operating frequency value, the target operating frequency of the compressor is determined, and the compressor is controlled to operate at the target operating frequency. This achieves passive matching and correction processing of the target operating frequency when the compressor's actual operating frequency suddenly drops due to driver control instability or driver frequency throttling factors during compressor operation. This effectively avoids the risk to the entire control system caused by a large difference between the target operating frequency and the actual operating frequency or a continuous large-scale frequency increase in the next frequency adjustment cycle. It also avoids the continuous fluctuation of the compressor's operating frequency caused by a dead loop, effectively ensuring stable operation of the entire machine. This has been repeatedly verified in actual practice and effectively solves a common problem in the industry.

[0079] In yet another embodiment of this application, as Figure 2 As shown, the method further includes:

[0080] Step S201: After the compressor driver enters the frequency reduction alarm state, determine whether the compressor driver has cleared the frequency reduction alarm state.

[0081] After entering the frequency reduction alarm state, the compressor driver may remain in the frequency reduction alarm state for a period of time. Therefore, it is necessary to determine whether the compressor driver has cleared the frequency reduction alarm state.

[0082] In one embodiment of this application, determining whether the compressor driver has lifted the frequency reduction alarm state includes: determining whether a second frequency reduction alarm signal is received from the compressor driver within a preset time period after the compressor driver enters the frequency reduction alarm state; if the second frequency reduction alarm signal is not received, determining that the compressor driver has lifted the frequency reduction alarm state; if the second frequency reduction alarm signal is received, determining that the compressor driver has not lifted the frequency reduction alarm state.

[0083] The second frequency reduction alarm signal in this embodiment is different from the first frequency reduction alarm signal in the previous embodiment.

[0084] Step S202: If the compressor driver does not clear the frequency reduction alarm state, return to the step of obtaining the first actual operating frequency value of the compressor after the frequency drop.

[0085] Step S203: If the compressor driver releases the frequency reduction alarm state, control the compressor to perform frequency increase or frequency reduction adjustment based on the target operating frequency.

[0086] This application embodiment can maintain the compressor frequency controlled according to the target operating frequency when the compressor driver is not in the frequency reduction alarm state, and control the compressor to adjust the frequency based on the target operating frequency and according to the actual needs when the compressor driver is in the frequency reduction alarm state.

[0087] For ease of understanding, such as Figure 3 As shown, this application also provides an embodiment in practical application.

[0088] Step 1: Power on the entire machine. After the main controller and the variable frequency compressor driver complete the power-on initialization, start the machine and run.

[0089] Step 2: Turn on the internal fan and run it at the rated speed. After the electronic expansion reset is completed, adjust it to the initial opening degree, and collect the current ambient temperature T, the set temperature Tset, and the set temperature deviation △T.

[0090] Step 3: Determine whether the compressor needs to be turned on. When the ambient temperature T > Tset + ΔT, the compressor is turned on; when the ambient temperature T < Tset - ΔT, the compressor is turned off.

[0091] Step 4: When the compressor needs to be turned on according to the above conditions, the main controller sends a start command and the initial target operating frequency to the compressor driver. At this time, the compressor turns on and adjusts the actual operating frequency to the initial target operating frequency at a fixed frequency increase rate of 1Hz / second to run stably.

[0092] Step 5: If the compressor is running and the conditions for shutting it down are not met, then the frequency adjustment formula is applied: ΔU(k)=K p e(k)+K i ∑e(k)+K d ec(k), U(k)=U(k-1)+ΔU(k) ​​calculates the difference between the current temperature and the set temperature in each adjustment cycle, and adjusts the target frequency change of the compressor by the magnitude and trend of this difference, thus performing frequency regulation.

[0093] Where: Kp is the proportional coefficient, Ki is the integral coefficient, and Kd is the derivative coefficient, all of which are adjustable coefficients. e(k) is the deviation between the current temperature and the set temperature, e(k) = T0 - T set ;

[0094] ec(k) is the rate of change of the temperature deviation. T0 is the current sampled value of the target temperature under control, T -1 The target temperature sample value is the control value of the previous cycle, and Time is the compressor frequency adjustment cycle;

[0095] ∑e(k) represents the cumulative deviation, ∑e(k) = (T0 - T) set )+(T -1 -T set );

[0096] ΔU(k) ​​is the target frequency variation value, and U(k) and U(k-1) are the target frequency calculation values ​​for the current period and the previous period, respectively.

[0097] If the target operating frequency changes during each adjustment process, the new target frequency value is sent to the compressor driver for execution. Under normal circumstances, after the compressor driver completes the frequency adjustment, the actual operating frequency is equal to the target operating frequency.

[0098] Step 6: When the compressor's actual operating frequency is at a high frequency and a sudden frequency drop occurs, the compressor driver sends a frequency reduction alarm signal. Upon receiving this alarm signal, the main controller immediately performs reverse passive matching correction processing for the target operating frequency. It reads the actual operating frequency value compln after the frequency drop and assigns it to the current calculated value complset of the target operating frequency (the original target operating frequency value is replaced and no longer used), maintaining a basic consistency between the target operating frequency and the actual operating frequency until the compressor driver clears the frequency reduction alarm state. After the compressor driver's frequency reduction alarm signal is cleared, the new target operating frequency is recalculated based on the finally stabilized frequency value, and normal frequency increase / decrease adjustment is performed.

[0099] In yet another embodiment of this application, as Figure 4 The invention also provides a compressor frequency control device, comprising:

[0100] The first determining module 11 is used to determine whether the compressor driver has entered the frequency reduction alarm state;

[0101] The first acquisition module 12 is used to acquire the first actual operating frequency value of the compressor after the frequency drop if the compressor driver enters the frequency reduction alarm state.

[0102] The second determining module 13 is used to determine the target operating frequency of the compressor based on the first actual operating frequency value;

[0103] The control module 14 is used to control the compressor to operate at the target operating frequency.

[0104] Optionally, the second determining module includes:

[0105] The first determining unit is used to determine a new target operating frequency based on the actual operating frequency value and a preset weighting coefficient.

[0106] The second determining unit is used to determine the target operating frequency of the compressor using the new target operating frequency value.

[0107] Optionally, the first determining module includes:

[0108] The detection unit is used to detect whether a first frequency reduction alarm signal is received from the compressor driver;

[0109] The third determining unit is used to determine that the compressor driver has entered the frequency reduction alarm state if the first frequency reduction alarm signal is received.

[0110] Optionally, the device further includes:

[0111] The fourth determining unit is used to determine whether the compressor driver has lifted the frequency reduction alarm state after the compressor driver enters the frequency reduction alarm state;

[0112] The return execution unit is used to return to the step of obtaining the first actual operating frequency value of the compressor after the frequency drop if the compressor driver has not cleared the frequency reduction alarm state.

[0113] Optionally, the device further includes:

[0114] The control unit is used to control the compressor to perform frequency increase or decrease adjustment based on the target operating frequency if the compressor driver releases the frequency reduction alarm state.

[0115] Optionally, the fourth determining unit includes:

[0116] The first determining subunit is used to determine whether a second frequency reduction alarm signal is received from the compressor driver within a preset time period after the compressor driver enters the frequency reduction alarm state.

[0117] The second determining subunit is used to determine that the compressor driver has lifted the frequency reduction alarm state if the second frequency reduction alarm signal is not received.

[0118] Optionally, the fourth determining unit further includes:

[0119] The third determining subunit is used to determine, if the second frequency reduction alarm signal is received, that the compressor driver has not cleared the frequency reduction alarm state.

[0120] In another embodiment of this application, an electronic device is also provided, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus.

[0121] Memory, used to store computer programs;

[0122] The processor, when executing a program stored in memory, implements the compressor control method described in any of the foregoing method embodiments.

[0123] The electronic device provided in this invention, through its processor executing a program stored in its memory, acquires a first actual operating frequency value of the compressor after a frequency drop when the compressor driver enters the frequency throttling alarm state. Based on this first actual operating frequency value, it determines the target operating frequency of the compressor and controls the compressor to operate at the target operating frequency. This achieves passive matching and correction processing of the target operating frequency when the compressor's actual operating frequency suddenly drops due to driver control instability or driver frequency throttling factors during compressor operation. This effectively avoids the risk to the entire control system caused by a large difference between the target operating frequency and the actual operating frequency or a continuous large-scale frequency increase in the next frequency adjustment cycle. It also avoids the continuous fluctuation of the compressor's operating frequency caused by a dead loop, effectively ensuring stable operation of the entire machine. This has been repeatedly verified in actual operation and effectively solves a common problem in the industry.

[0124] The communication bus 1140 mentioned in the above-mentioned electronic device can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus 1140 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0125] The communication interface 1120 is used for communication between the above-mentioned electronic device and other devices.

[0126] The memory 1130 may include random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Optionally, the memory may also be at least one storage device located remotely from the aforementioned processor.

[0127] The processor 1110 mentioned above can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0128] In another embodiment of this application, a computer-readable storage medium is also provided, on which a program for a compressor control method is stored, wherein when the program for the compressor control method is executed by a processor, the program implements the steps of the compressor control method described in any of the foregoing method embodiments.

[0129] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0130] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A compressor control method, characterized in that, include: Determine if the compressor driver has entered the frequency reduction alarm state; Determine if the compressor driver has entered a frequency throttling alarm state, including: Detect whether a first frequency reduction alarm signal is received from the compressor driver; If the first frequency reduction alarm signal is received, it is determined that the compressor driver has entered the frequency reduction alarm state; If the compressor driver enters the frequency reduction alarm state, obtain the first actual operating frequency value of the compressor after the frequency drop; The target operating frequency of the compressor is determined based on the first actual operating frequency value; The compressor is controlled to operate at the target operating frequency.

2. The method according to claim 1, characterized in that, Determining the target operating frequency of the compressor based on the first actual operating frequency value includes: Based on the first actual operating frequency value and the preset weighting coefficient, a new target operating frequency is determined; The target operating frequency of the compressor is determined using the new target operating frequency value.

3. The method according to claim 1, characterized in that, The method further includes: After the compressor driver enters the frequency reduction alarm state, determine whether the compressor driver should release the frequency reduction alarm state; If the compressor driver does not clear the frequency reduction alarm state, return to the step of obtaining the first actual operating frequency value of the compressor after the frequency drop.

4. The method according to claim 3, characterized in that, The method further includes: If the compressor driver clears the frequency reduction alarm state, it controls the compressor to perform frequency increase or frequency reduction adjustment based on the target operating frequency.

5. The method according to claim 3, characterized in that, Determining whether the compressor driver has cleared the frequency reduction alarm status includes: Within a preset time period after the compressor driver enters the frequency reduction alarm state, determine whether a second frequency reduction alarm signal is received from the compressor driver; If the second frequency reduction alarm signal is not received, it is determined that the compressor driver has lifted the frequency reduction alarm state.

6. The method according to claim 5, characterized in that, Determining whether the compressor driver has cleared the frequency reduction alarm state further includes: If the second frequency reduction alarm signal is received, it is determined that the compressor driver has not cleared the frequency reduction alarm state.

7. A compressor frequency control device, characterized in that, include: The first determining module is used to determine whether the compressor driver has entered the frequency reduction alarm state; The first determining module includes: The detection unit is used to detect whether a first frequency reduction alarm signal is received from the compressor driver; The third determining unit is used to determine that the compressor driver has entered the frequency reduction alarm state if the first frequency reduction alarm signal is received; The first acquisition module is used to acquire the first actual operating frequency value of the compressor after the frequency drop if the compressor driver enters the frequency reduction alarm state. The second determining module is used to determine the target operating frequency of the compressor based on the first actual operating frequency value; The control module is used to control the compressor to operate at the target operating frequency.

8. An electronic device, characterized in that, It includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; Memory, used to store computer programs; The processor, when executing a program stored in memory, implements the compressor control method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a program for a compressor control method, which, when executed by a processor, implements the steps of the compressor control method according to any one of claims 1-6.

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