Compressor control method and apparatus, and device and storage medium

Abstract

The present application relates to a compressor control method and apparatus, and a device and a storage medium. In the present application, when a compressor operates in an open-loop drive control mode at the initial startup, the feedback rotation speed of the compressor during operation is acquired, and when the feedback rotation speed is at the maximum, the operation mode of the compressor is switched to a closed-loop control mode.

Description

Compressor Control Method, Device, Equipment and Storage Medium Related Applications This application claims the priority of the Chinese patent application with the application number 202311649845.9 filed on November 29, 2023, the entire content of which is incorporated herein by reference. Technical Field This application relates to the technical field of motor control, and particularly relates to a compressor control method, device, equipment and storage medium. Background Art When the compressor operates under heavy load, the operating speed of the open-loop drive of the compressor is limited, and it is difficult for the position of the observer to converge. At this time, during the process of switching from open-loop drive to closed-loop control, it is easy to cause startup failure due to inaccurate observer position. The above content is only used to assist in understanding the technical solution of this application, and does not represent an admission that the above content is prior art. Summary of the Invention The main purpose of this application is to provide a compressor control method, device, equipment and storage medium, aiming to solve the technical problem of easy startup failure when the compressor operates under heavy load in the prior art. To achieve the above purpose, this application provides a compressor control method, and the method includes the following steps: When the compressor operates in the open-loop drive control mode, obtain the feedback speed during the operation of the compressor; Adjust the operation mode of the compressor to the closed-loop control mode according to the maximum value of the feedback speed. In one embodiment, the adjusting the operation mode of the compressor to the closed-loop control mode according to the maximum value of the feedback speed includes: Determine the target mechanical angle corresponding to the maximum value of the feedback speed; When the compressor is at the target mechanical angle, control the compressor to operate in the closed-loop control mode. In one embodiment, the determining the target mechanical angle corresponding to the maximum value of the feedback speed includes: Determine the target time node corresponding to the maximum value of the feedback speed; Query the corresponding target mechanical angle based on the target time node through a preset mechanical angle table. In one embodiment, before querying the corresponding target mechanical angle based on the target time node through a preset mechanical angle table, it further includes: Statistically analyze the electrical angle data set of the compressor at each moment; Obtain the number of rotor magnetic poles of the compressor; ​Construct a preset mechanical angle table according to the number of rotor magnetic poles and the electric angle data set. In one embodiment, the constructing a preset mechanical angle table according to the number of rotor magnetic poles and the electric angle data set includes: Construct an electric angle table of the compressor at each moment according to the electric angle data set; Update the electric angle table according to the number of rotor magnetic poles to obtain a preset mechanical angle table. In one embodiment, when the compressor operates in an open-loop drive control mode, obtaining the feedback speed during the operation of the compressor includes: Determine the speed control command when the compressor is in the open-loop drive control mode; Obtain the feedback speed at each moment after the compressor receives the speed control command. In one embodiment, the compressor control method further includes: When the compressor operates in a closed-loop control mode, control the compressor to operate at a target mechanical angle. In addition, to achieve the above object, the present application also proposes a compressor control device, and the compressor control device includes: An acquisition module, configured to obtain the feedback speed during the operation of the compressor when the compressor operates in an open-loop drive control mode; An adjustment module, configured to adjust the operation mode of the compressor to a closed-loop control mode according to the maximum value of the feedback speed. In addition, to achieve the above object, the present application also proposes a compressor control device, the compressor control device includes: a memory, a processor, and a compressor control program stored on the memory and executable on the processor, and the compressor control program is configured to implement the steps of the compressor control method as described above. In addition, to achieve the above object, the present application also proposes a storage medium, on which a compressor control program is stored, and when the compressor control program is executed by a processor, the steps of the compressor control method as described above are implemented. Description of the Drawings FIG. 1 is a schematic structural diagram of a compressor control device in a hardware operating environment related to the embodiment solution of the present application; FIG. 2 is a schematic flowchart of the first embodiment of the compressor control method of the present application; FIG. 3 is a schematic flowchart of the second embodiment of the compressor control method of the present application; FIG. 4 is a block diagram of the structure of the first embodiment of the compressor control device of the present application. The realization, functional features and advantages of the object of the present application will be further described in conjunction with the embodiments with reference to the drawings. Specific Embodiments It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. Referring to FIG. 1, FIG. 1 is a schematic structural diagram of a compressor control device for the hardware operating environment involved in the embodiment solution of the present application. As shown in FIG. 1, the compressor control device may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display) and an input unit such as a keyboard (Keyboard). The user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may include a standard wired interface and a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be a high-speed Random Access Memory (RAM), or a stable Non-Volatile Memory ( NVM), such as a disk memory. The memory 1005 may also be a storage device independent of the aforementioned processor 1001. Those skilled in the art can understand that the structure shown in FIG. 1 does not constitute a limitation on the compressor control device, and may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements. As shown in FIG. 1, the memory 1005, as a storage medium, may include an operating system, a network communication module, a user interface module, and a compressor control program. In the compressor control device shown in FIG. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the compressor control device of the present application may be arranged in the compressor control device. The compressor control device calls the compressor control program stored in the memory 1005 through the processor 1001 and executes the compressor control method provided by the embodiment of the present application. The embodiment of the present application provides a compressor control method. Referring to FIG. 2, FIG. 2 is a schematic flowchart of the first embodiment of a compressor control method of the present application. In this embodiment, the compressor control method includes the following steps: Step S10: When the compressor operates in an open-loop drive control mode, obtain the feedback speed during the operation of the compressor. It should be noted that the execution subject of this embodiment can be a device with functions such as data processing, program running, and data acquisition. For example: the controller of a temperature control device or a control computer for testing, etc. It can also be other devices that can achieve the same or similar functions. This embodiment does not make specific restrictions on this. According to different specific application scenarios, there can be different selections. For example: when performing low-frequency control of temperature control devices such as refrigerators and air conditioners, the execution subject can be the core controller of these temperature control devices. When performing a running test on a compressor, the execution subject of the method of this embodiment can be a control computer for testing. For the convenience of description, in this embodiment and the following embodiments, the controller of the temperature control device is taken as an example for description. In the control system of a compressor, the load characteristics of the compressor are divided into the suction half-cycle and the discharge half-cycle. Among them, the load pressure in the discharge half-cycle is greater than that in the suction half-cycle, and this characteristic is particularly obvious under the working conditions of high multiple pressure differences; and when the compressor is running under heavy load, the running speed of the compressor under open-loop drive is limited, and the position of the observer is difficult to converge. At this time, during the process of switching from open-loop drive to closed-loop control, it is easy to cause startup failure due to inaccurate observer position. The traditional compressor startup method lacks Analysis of mechanical position and load characteristics, and it is easy to cause startup failure when starting the compressor under high multiple pressure differences, resulting in problems such as startup cylinder collision. To solve the above problems, in the embodiment of the present application, when the compressor is running in the open-loop drive control mode at the initial stage of startup, the feedback speed during the operation of the compressor is obtained, and when the feedback speed is at the maximum, the operation mode of the compressor is switched to the closed-loop control mode, so as to complete the switching control from open-loop drive to closed-loop when the load pressure in the suction half-cycle of the compressor is in the light load state, thereby realizing the judgment of the mode switching of the compressor according to the relationship between the compressor speed and the mechanical angle. Since the load characteristics of the compressor change with the change of the mechanical angle of the compressor, the load characteristic information of the compressor can be obtained according to the mechanical angle of the compressor. Therefore, the load characteristics of the compressor can be determined according to the change of the mechanical angle of the compressor, and then the operation mode of the compressor can be switched when the load is relatively low, thereby improving the startup success rate of the compressor. However, the mechanical angle of the compressor cannot be directly obtained through position observation. Therefore, in this embodiment, the mechanical angle is indirectly judged by monitoring the feedback speed of the compressor. There is a certain mapping relationship between the actual running speed of the compressor, that is, the feedback speed, and the mechanical angle of the compressor. During one operation cycle, when the actual running speed of the compressor is at the maximum value, it means that the load corresponding to the mechanical angle of the compressor at this time is the smallest, which is suitable for switching the operation mode of the compressor to the closed-loop control mode. It can be understood that when the compressor is in open-loop control mode, it means that the compressor does not detect the actual output, and the controller only generates an output signal based on a predetermined value (set value) of the input signal. In open-loop control mode, the actual performance of the system is not monitored or corrected, and it is therefore very sensitive to external disturbances or uncertainties. The closed-loop control mode has a feedback mechanism that measures the actual output of the compressor and compares it with the set value. The controller then adjusts the output based on the error signal to make the actual output as close to the set value as possible. This feedback mechanism enables the closed-loop control system to respond to system changes and uncertainties in real time. Furthermore, when the compressor is operated in an open-loop drag control mode, obtaining the feedback speed of the compressor during operation includes: Determining a speed control instruction when the compressor is in an open-loop drag control mode; The feedback speed of the compressor at each moment is obtained after receiving the speed control instruction. In one embodiment, the speed control instruction of the compressor in the current cycle is consistent with the current operation mode. In the corresponding relationship, since the speed command issued by the compressor is affected by the internal impedance of the motor or the mechanical structure, the speed command is 4000 rpm, but the actual operating speed of the compressor may be only 3500 rpm. In order to improve the accuracy of the mode switching time, this embodiment uses the actual operating speed of the compressor, that is, the feedback speed, to adjust the operating mode of the compressor to the closed-loop control mode. The process of obtaining the feedback rotation speed of the compressor may be obtained by collecting data through a sensor provided in the compressor, and this embodiment does not impose any specific limitation on this. Step S20: adjusting the operation mode of the compressor to a closed-loop control mode according to the maximum value of the feedback speed. In one embodiment, the load characteristics of the compressor are judged based on the feedback speed, so as to determine the corresponding relationship between the mechanical angle of the compressor and the load characteristics, and realize the starting control switching at the mechanical position of the compressor with light load, thereby improving the success rate of the compressor starting. In this embodiment, when the compressor is operated in an open-loop drag control mode at the initial start-up, the feedback speed of the compressor is obtained, and when the feedback speed is at the maximum, the operating mode of the compressor is switched to a closed-loop control mode, so as to complete the switching control from open-loop drag to closed-loop when the load pressure of the compressor suction half cycle is at a light load, thereby realizing the judgment of the mode switching of the compressor based on the relationship between the compressor speed and the mechanical angle, avoiding the technical problem of startup failure that is prone to occur when the compressor is overloaded in the related technology, and improving the startup success rate of the compressor. Refer to FIG3 , which is a flow chart of a second embodiment of a compressor control method of the present application. Based on the above first embodiment, in one embodiment, the step S20 includes: Step S201: Determine the target mechanical angle corresponding to the maximum feedback rotational speed. It should be noted that the calculation method of the optimal compressor mechanical angle θm_opt is as follows: θ m_opt = θ m_N (max(ω Fdb )) where ωFdb is the feedback rotational speed, and θm_N(min(ωFdb)) is the mechanical angle corresponding to the maximum feedback rotational speed. Further, the determining the target mechanical angle corresponding to the maximum feedback rotational speed includes: Determine the target time node corresponding to the maximum feedback rotational speed; Query the corresponding target mechanical angle based on the target time node through a preset mechanical angle table. In one embodiment, each feedback rotational speed corresponds to a separate mechanical angle, and the mapping relationship between the mechanical angle and the feedback rotational speed can be obtained by pre-testing by the user, that is, the preset mechanical angle table is obtained by pre-testing. preset mechanical angle table. Further, before querying the corresponding target mechanical angle based on the target time node through the preset mechanical angle table, it further includes: Statistically analyze the electrical angle data set of the compressor at each moment; Obtain the number of rotor magnetic poles of the compressor; Construct a preset mechanical angle table according to the number of rotor magnetic poles and the electrical angle data set. It should be noted that the angle 360° / p occupied by each pair of poles of the motor on the inner circle of the stator refers to the actual spatial geometric angle, and this angle is called the mechanical angle. In motors with four or more poles, the mechanical angle occupied by a pair of poles is often defined as 360 degrees of electrical angle. In one embodiment, for a two-pole motor, the electrical angle and the mechanical angle occupied by its stator inner circle are equal, both being 360°; while for a p-pole motor, the total electrical angle of its stator inner circle is 360°*p, but the mechanical angle is still 360°. Therefore, the relationship between the two is as follows: The relationship between the electrical angle and the mechanical angle of the motor is: electrical angle = mechanical angle × number of pole pairs. For a common three-phase brushless DC motor, generally there are 3 position sensors, and there are two types of output waveforms: one is a phase difference of 60° electrical angle, and the other is a phase difference of 120° electrical angle. For example, for 1 pair of magnetic poles and a phase difference of 120° electrical angle, the spatial interval of the 3 position sensors is 120° mechanical angle; for 2 pairs of magnetic poles and a phase difference of 60° electrical angle, the spatial interval of the 3 position sensors is 30° mechanical angle. Further, constructing a preset mechanical angle table according to the number of rotor magnetic poles and the electric angle data set includes: Constructing a preset mechanical angle table according to the number of rotor magnetic poles and the electric angle data set includes: Constructing an electric angle table of the compressor at each moment according to the electric angle data set; and Updating the electric angle table according to the number of rotor magnetic poles to obtain a preset mechanical angle table. It can be understood that the calculation method of the compressor electric angle table ElecAng

[0360] is as follows: ElecAng[i] = θElec(i) where i is the electric angle table count value, and its range is 1 to 360; ElecAng[i] is the i-th stored value of the electric angle table; θElec(i) is the compressor electric angle value at the i-th moment. The calculation method of the mechanical angle table MechAng[N * 360] is as follows: MechAng[i] = ElecAng[i] / N where N is the number of pole pairs of the compressor; MechAng[i] is the i-th stored value of the mechanical angle table. In an embodiment, the calculation method of the compressor mechanical angle θm_N is as follows: θ m_N = θ e_N / N where N is the number of pole pairs of the compressor, and θe_N is the open-loop drive electric angle. Step S202: When the compressor is at the target mechanical angle, control the compressor to operate in a closed-loop control mode. It can be understood that the load characteristics of the compressor change with the change of the mechanical angle of the compressor. According to the mechanical angle of the compressor, the load characteristic information of the compressor can be obtained. Therefore, according to the change of the mechanical angle of the compressor, the load characteristics of the compressor can be determined. Furthermore, when the load is relatively low, the operation mode of the compressor can be switched, thereby improving the starting success rate of the compressor. That is, when the compressor is at the target mechanical angle, switch the compressor to operate in a closed-loop control mode. However, since the mechanical angle of the compressor cannot be directly obtained through position observation, in this embodiment, the mechanical angle is indirectly judged by monitoring the feedback speed of the compressor, so as to achieve the purpose of judging whether the compressor is in a low-load working condition. Further, when the compressor operates in a closed-loop control mode, control the compressor to operate at the target mechanical angle. It should be understood that the target mechanical angle is the same as the mechanical angle before the compressor switching mode. After the mode switching, there will be no large speed change. By controlling the compressor to operate at the mechanical angle before the switching mode, the normal operation of the compressor is ensured. In this embodiment, the target mechanical angle corresponding to the maximum value of the feedback speed is queried, and the feedback speed is monitored to determine the best timing for the compressor mode switching, thereby improving the success rate during the compressor startup. In addition, an embodiment of the present application further provides a storage medium, on which a compressor control program is stored. When the compressor control program is executed by a processor, the steps of the compressor control method as described above are implemented. Since this storage medium adopts all the technical solutions of the above all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one. Referring to FIG. 4, FIG. 4 is a structural block diagram of a first embodiment of a compressor control device of the present application. As shown in FIG. 4, the compressor control device proposed by the embodiment of the present application includes: An acquisition module 10, configured to acquire the feedback speed during the operation of the compressor when the compressor operates in an open-loop drive control mode. It should be noted that in the control system of the compressor, the load characteristics of the compressor are divided into the suction half cycle and the exhaust half cycle. Among them, the load pressure in the exhaust half cycle is greater than that in the suction half cycle, and this characteristic is particularly obvious under the working conditions of high multiple pressure differences; and when the compressor operates under heavy load, the operating speed of the compressor in open-loop drive is limited, and the position of the observer is difficult to converge. At this time, during the process of switching from open-loop drive to closed-loop control, it is easy to cause startup failure due to inaccurate observer position. The traditional compressor startup method lacks the analysis of mechanical position and load characteristics, and is easy to cause startup failure when the compressor starts under high multiple pressure differences, resulting in problems such as startup cylinder collision. To solve the above problems, in this embodiment, when the compressor operates in an open-loop drive control mode at the initial stage of startup, the feedback speed during the operation of the compressor is acquired, and when the feedback speed is at the maximum, the operation mode of the compressor is switched to the closed-loop control mode, so as to realize the switching control from open-loop drive to closed-loop when the load pressure in the suction half cycle of the compressor is under light load, and thus judge the mode switching of the compressor according to the relationship between the compressor speed and the mechanical angle. It should be noted that since the load characteristics of the compressor change with the mechanical angle of the compressor, the load characteristic information of the compressor can be obtained according to the mechanical angle of the compressor. Therefore, the load characteristics of the compressor can be determined according to the change of the mechanical angle of the compressor. Furthermore, when the load is relatively low, the operation mode of the compressor can be switched, thereby improving the starting success rate of the compressor. However, the mechanical angle of the compressor cannot be directly obtained through position observation. Therefore, in this embodiment, the mechanical angle is indirectly judged by monitoring the feedback speed of the compressor. There is a certain mapping relationship between the feedback speed of the compressor during actual operation and the mechanical angle of the compressor. During one operation cycle, when the speed of the compressor during actual operation reaches the maximum value, it indicates that the load corresponding to the mechanical angle of the compressor at this time is the smallest, and it is suitable to switch the operation mode of the compressor to the closed-loop control mode. It can be understood that when the compressor is in the open-loop control mode, it means that the compressor does not detect the actual output, and the controller only generates an output signal based on a predetermined value (set value) of the input signal. In the open-loop control mode, the actual performance of the system is not monitored or corrected, so it is very sensitive to external disturbances or uncertainties. The closed-loop control mode has a feedback mechanism that measures the actual output of the compressor and compares the actual output with the set value. Then, the controller adjusts the output according to the error signal to make the actual output as close as possible to the set value. This feedback mechanism enables the closed-loop control system to respond in real time to changes and uncertainties in the system. Furthermore, when the compressor is operating in the open-loop drive control mode, obtaining the feedback speed during the operation of the compressor includes: Determining the speed control command when the compressor is in the open-loop drive control mode; Obtaining the feedback speed at each moment after the compressor receives the speed control command. In one embodiment, there is a corresponding relationship between the speed control command of the compressor in the current cycle and the current operation mode. Among them, since the compressor is affected by the internal impedance of the motor or the mechanical structure when receiving the speed command, the speed command is 4000 revolutions per second, but the actual operating speed of the compressor may only be 3500 revolutions per second. To improve the accuracy of the mode switching moment, in this embodiment, the actual operating speed of the compressor, that is, the feedback speed, is used to adjust the operation mode of the compressor to the closed-loop control mode. The process of obtaining the feedback speed of the compressor can be achieved by collecting through sensors provided inside the compressor. This embodiment does not make specific restrictions on this. The adjustment module 20 is used to adjust the operation mode of the compressor to the closed-loop control mode according to the maximum value of the feedback speed. In one embodiment, the load characteristics of the compressor are judged according to the feedback rotational speed, so as to determine the corresponding relationship between the mechanical angle and the load characteristics of the compressor, and the start control is switched at the mechanical position of the light load of the compressor, thereby improving the start success rate of the compressor. In one embodiment, the adjustment module 20 is further configured to determine a target mechanical angle corresponding to the maximum value of the feedback rotational speed; when the compressor is at the target mechanical angle, control the compressor to operate in a closed-loop control mode. In one embodiment, the adjustment module 20 is further configured to determine a target time node corresponding to the maximum value of the feedback rotational speed; query the corresponding target mechanical angle based on the target time node through a preset mechanical angle table. In one embodiment, the adjustment module 20 is further configured to count the electrical angle data sets of the compressor at each moment; obtain the number of rotor magnetic poles of the compressor; and construct a preset mechanical angle table according to the number of rotor magnetic poles and the electrical angle data sets. In one embodiment, the adjustment module 20 is further configured to construct an electrical angle table of the compressor at each moment according to the electrical angle data set; update the electrical angle table according to the number of rotor magnetic poles to obtain a preset mechanical angle table. In one embodiment, the acquisition module 10 is further configured to determine a speed control instruction when the compressor is in an open-loop drag control mode; and acquire the feedback rotational speed at each moment after the compressor receives the speed control instruction. In one embodiment, the adjustment module 20 is further configured to control the compressor to operate at a target mechanical angle when the compressor operates in a closed-loop control mode. In this embodiment, when the compressor operates in an open-loop drag control mode at the initial stage of starting, the feedback rotational speed during the operation of the compressor is acquired, and when the feedback rotational speed is at the maximum, the operation mode of the compressor is switched to the closed-loop control mode, so as to complete the switching control from open-loop drag to closed-loop when the load pressure is at a light load during the suction half cycle of the compressor, thereby realizing the judgment of the mode switching of the compressor according to the relationship between the compressor speed and the mechanical angle, avoiding the technical problem that the compressor is prone to start failure during heavy load operation in the related art, and improving the start success rate of the compressor. It should be understood that although the steps in the flowcharts in the embodiments of the present application are shown in sequence according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps has no strict order limit and can be executed in other orders. Moreover, at least a part of the steps in the figure may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time but can be executed at different times, and their execution order is not necessarily sequential but can be executed alternately or in turn with at least a part of other steps or sub-steps or stages of other steps. It should be understood that the above is only an example and does not impose any limitation on the technical solution of the present application. In specific applications, those skilled in the art can set it as needed, and the present application does not make any restrictions in this regard. It should be noted that the above-described work process is only illustrative and does not limit the protection scope of the present application. In actual applications, those skilled in the art can select some or all of them according to actual needs to achieve the purpose of the solution of this embodiment, and no restrictions are made here. In addition, for the technical details not described in detail in this embodiment, reference can be made to the compressor control method provided in any embodiment of the present application, and details will not be described here again. In addition, it should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or system. Without more limitations, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or system including that element. method, article or system. The serial numbers of the embodiments of the present application above are only for description and do not represent the superiority or inferiority of the embodiments. Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, 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 is stored in a storage medium (such as a read-only memory (ROM) / RAM, magnetic disk, optical disk), and includes several instructions to enable a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in various embodiments of the present application. The above are only optional embodiments of the present application, and do not limit the patent scope of the present application accordingly. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A compressor control method, wherein: The compressor control method comprises: When the compressor is running in an open-loop drag control mode, obtaining a feedback speed of the compressor when it is running; The operation mode of the compressor is adjusted to a closed-loop control mode according to the maximum value of the feedback speed.

2. The compressor control method according to claim 1, wherein: The step of adjusting the operation mode of the compressor to a closed-loop control mode according to the maximum value of the feedback speed includes: Determine a target mechanical angle corresponding to the maximum feedback speed value; When the compressor is at the target mechanical angle, the compressor is controlled to operate in a closed-loop control mode.

3. The compressor control method according to claim 2, wherein: The determining of the target mechanical angle corresponding to the maximum feedback speed value includes: Determine a target time node corresponding to the maximum feedback speed value; Based on the target time node, the corresponding target mechanical angle is queried through a preset mechanical angle table.

4. The compressor control method according to claim 3, wherein: Before querying the corresponding target mechanical angle through the preset mechanical angle table based on the target time node, the method further includes: Statistical electrical angle data set of the compressor at each moment; Get the number of rotor poles of the compressor; A preset mechanical angle table is constructed according to the number of rotor poles and the electrical angle data set.

5. The compressor control method according to claim 4, wherein: The step of constructing a preset mechanical angle table according to the number of rotor poles and the electrical angle data set includes: Constructing an electrical angle table of the compressor at each moment according to the electrical angle data set; The electrical angle table is updated according to the number of rotor poles to obtain a preset mechanical angle table.

6. The compressor control method according to any one of claims 1 to 5, wherein: When the compressor is running in an open-loop drag control mode, obtaining the feedback speed of the compressor when the compressor is running includes: Determining a speed control instruction when the compressor is in an open-loop drag control mode; The feedback speed of the compressor at each moment is obtained after receiving the speed control instruction.

7. The compressor control method according to any one of claims 1 to 5, wherein: The compressor control method further includes: When the compressor operates in a closed-loop control mode, the compressor is controlled to operate at a target mechanical angle.

8. A compressor control device, wherein: The compressor control device comprises: An acquisition module, used for acquiring a feedback speed of the compressor when the compressor is operating in an open-loop drag control mode; The adjustment module is used to adjust the operation mode of the compressor to a closed-loop control mode according to the maximum value of the feedback speed.

9. A compressor control device, wherein: The compressor control device comprises: a memory, a processor, and a compressor control program stored in the memory and executable on the processor, wherein the compressor control program is configured to implement the compressor control method according to any one of claims 1 to 7.

10. A storage medium, wherein: The storage medium stores a compressor control program, and when the compressor control program is executed by the processor, the compressor control method according to any one of claims 1 to 7 is implemented.

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