阅读说明：本技术 驱动组件的控制方法、空调器和计算机可读存储介质 (Control method of driving assembly, air conditioner and computer readable storage medium ) 是由 乔飞 于 2020-06-22 设计创作，主要内容包括：本发明提供了一种驱动组件的控制方法、空调器和计算机可读存储介质,驱动组件的控制方法包括：获取驱动组件的退磁保护值；基于退磁保护值小于退磁保护阈值的情况下,控制驱动组件停机。本发明所提供的驱动组件的控制方法,在驱动组件运行的过程中,控制模块可获取到驱动组件的退磁保护值,控制模块再根据驱动组件的类型或型号,生成或存储有退磁保护阈值,控制模块将获取到的驱动组件的退磁保护值与退磁保护阈值进行比较,在退磁保护值小于退磁保护阈值的情况下,说明驱动组件存在永久退磁的风险,控制驱动组件停机,以避免驱动组件继续运行而导致的永久退磁,进而避免驱动组件再次运行时动力不足,确保驱动组件的制冷或制热效果。(The invention provides a control method of a driving assembly, an air conditioner and a computer readable storage medium, wherein the control method of the driving assembly comprises the following steps: acquiring a demagnetization protection value of the driving component; and controlling the driving component to stop based on the condition that the demagnetization protection value is smaller than the demagnetization protection threshold value. According to the control method of the driving assembly, the control module can acquire the demagnetization protection value of the driving assembly in the operation process of the driving assembly, the control module generates or stores the demagnetization protection threshold value according to the type or the model of the driving assembly, the control module compares the acquired demagnetization protection value of the driving assembly with the demagnetization protection threshold value, under the condition that the demagnetization protection value is smaller than the demagnetization protection threshold value, the driving assembly is indicated to have the risk of permanent demagnetization, the driving assembly is controlled to stop, permanent demagnetization caused by continuous operation of the driving assembly is avoided, further, insufficient power is avoided when the driving assembly operates again, and the refrigerating or heating effect of the driving assembly is ensured.)

1. A method of controlling a drive assembly, comprising:

acquiring a demagnetization protection value of the driving component;

and controlling the driving component to stop based on the condition that the demagnetization protection value is smaller than the demagnetization protection threshold value.

2. The method according to claim 1, wherein the obtaining of the demagnetization protection value of the drive component comprises:

acquiring the back electromotive force of the driving component;

and acquiring the demagnetization protection value of the driving component according to the back electromotive force.

3. The method according to claim 1, wherein the obtaining of the demagnetization protection value of the drive component comprises:

acquiring quadrature axis back electromotive force of the driving assembly;

acquiring direct-axis counter electromotive force of the driving component;

and acquiring the demagnetization protection value of the driving component according to the quadrature axis counter electromotive force and the direct axis counter electromotive force.

4. The method of claim 3, wherein the obtaining quadrature axis back EMF of the drive assembly comprises:

acquiring quadrature axis voltage of the driving assembly;

acquiring quadrature axis current of the driving assembly;

acquiring a direct-axis current of the driving assembly;

collecting the rotor angular velocity of the driving assembly;

and acquiring quadrature axis counter electromotive force of the driving assembly according to the quadrature axis voltage, the quadrature axis current, the direct axis inductance of the driving assembly, the stator resistance value of the driving assembly and the rotor angular speed.

5. The control method of the drive assembly according to claim 3, wherein the obtaining of the direct-axis back electromotive force of the drive assembly comprises:

acquiring a direct-axis voltage of the driving assembly;

acquiring quadrature axis current of the driving assembly;

acquiring a direct-axis current of the driving assembly;

collecting the rotor angular velocity of the driving assembly;

and acquiring the direct-axis counter electromotive force of the driving assembly according to the direct-axis voltage, the quadrature-axis current, the direct-axis current, the quadrature-axis inductance of the driving assembly, the stator resistance value of the driving assembly and the rotor angular speed.

6. The control method of the drive assembly according to claim 1, wherein before controlling the drive assembly to stop in the case where the demagnetization protection value is smaller than a demagnetization protection threshold value, the control method of the drive assembly further comprises:

and acquiring the demagnetization protection threshold value according to the rated flux linkage of the driving component, the demagnetization coefficient of the driving component and the rotor angular speed of the driving component.

7. The method according to claim 6, wherein before the step of obtaining the demagnetization protection threshold value based on the rated flux linkage of the drive component, the demagnetization factor of the drive component, and the rotor angular velocity of the drive component, the method further comprises:

and acquiring the demagnetization coefficient of the driving component according to the temperature rise threshold value of the driving component.

8. The control method of the drive assembly according to any one of claims 1 to 7, further comprising:

and controlling an alarm component to send out an alarm based on the condition that the demagnetization protection value is smaller than the demagnetization protection threshold value.

9. An air conditioner, comprising:

a memory configured to store executable instructions;

a processor configured to execute stored instructions to implement the steps of the control method of the drive assembly according to any one of claims 1 to 8.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the control method of a drive assembly according to any one of claims 1 to 8.

Technical Field

The invention relates to the technical field of air conditioners, in particular to a control method of a driving assembly, an air conditioner and a computer readable storage medium.

Background

At present, a permanent magnet of a compressor is made of a rare earth magnetic material such as neodymium iron boron, and the rare earth magnetic material is easy to demagnetize in a high-temperature or strong magnetic field environment. If the compressor generates irreversible demagnetization, the output torque of the compressor is insufficient, and the refrigeration effect is poor.

In the related art, in order to prevent the compressor from irreversible demagnetization, a temperature sensor is usually embedded in a stator of the compressor, and the compressor is protected according to the temperature of the stator of the compressor, but an additional temperature sensor needs to be arranged on the stator to protect the compressor through the temperature of the stator of the compressor, so that the assembly difficulty of the compressor is increased, and the cost of the compressor is increased.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

To this end, a first aspect of the invention proposes a control method of a drive assembly.

A second aspect of the present invention provides an air conditioner.

A third aspect of the invention proposes a computer-readable storage medium.

In view of this, a first aspect of the present invention provides a control method of a drive assembly, including: acquiring a demagnetization protection value of the driving component; and controlling the driving component to stop based on the condition that the demagnetization protection value is smaller than the demagnetization protection threshold value.

According to the control method of the driving assembly, the control module can acquire the demagnetization protection value of the driving assembly in the running process of the driving assembly, the control module generates or stores the demagnetization protection threshold value according to the type or model of the driving assembly, the control module compares the acquired demagnetization protection value of the driving assembly with the demagnetization protection threshold value, under the condition that the demagnetization protection value is smaller than the demagnetization protection threshold value, the driving assembly is indicated to have a permanent demagnetization risk, the driving assembly is controlled to stop to avoid permanent demagnetization caused by continuous running of the driving assembly, further, insufficient power is avoided when the driving assembly runs again, and the refrigerating or heating effect of the driving assembly is ensured; and because the protection to the drive assembly is realized through detecting the demagnetization protection value of the drive assembly, the permanent demagnetization of the drive assembly can be prevented without arranging additional components on the drive assembly, the assembly difficulty of the drive assembly is reduced, the assembly process of the drive assembly is simpler, and the cost of the drive assembly is reduced while the assembly efficiency of the drive assembly is improved.

In addition, the control method of the driving assembly in the above technical solution provided by the present invention may further have the following additional technical features:

in one technical solution of the present invention, obtaining the demagnetization protection value of the driving component includes: acquiring the back electromotive force of the driving component; and acquiring the demagnetization protection value of the driving component according to the back electromotive force.

In the technical scheme, the control module acquires the back electromotive force of the driving assembly, and then calculates the demagnetization protection value of the driving assembly according to the back electromotive force of the driving assembly, so that the demagnetization protection value is acquired without adding an additional detection component, and the structure of the driving assembly is simplified.

In one technical solution of the present invention, obtaining the demagnetization protection value of the driving component includes: acquiring quadrature axis counter electromotive force of a driving assembly; acquiring direct-axis counter electromotive force of a driving assembly; and acquiring the demagnetization protection value of the driving component according to the quadrature axis counter electromotive force and the direct axis counter electromotive force.

In the technical scheme, the control module simultaneously acquires quadrature axis back electromotive force of the driving assembly and direct axis back electromotive force of the driving assembly, and acquires demagnetization protection value of the driving assembly according to the quadrature axis back electromotive force of the driving assembly and the direct axis back electromotive force of the driving assembly, so that the acquired demagnetization protection value is more accurate, deviation caused by detection precision is reduced, further, the shutdown opportunity of the driving assembly is more accurate, the driving assembly is effectively protected, meanwhile, the false shutdown caused by detection errors is avoided, sufficient refrigeration or heating capacity is obtained during the operation of the equipment, and the influence on the normal operation of the equipment caused by the shutdown protection of the driving assembly is reduced.

In one aspect of the present invention, obtaining quadrature-axis back electromotive force of the driving assembly includes: acquiring quadrature axis voltage of a driving assembly; acquiring quadrature axis current of a driving assembly; acquiring direct-axis current of a driving assembly; collecting the rotor angular speed of the driving assembly; and acquiring quadrature axis counter electromotive force of the driving assembly according to the quadrature axis voltage, the quadrature axis current, the direct axis inductance of the driving assembly, the stator resistance value of the driving assembly and the rotor angular speed.

In the technical scheme, the control module can obtain quadrature axis voltage, quadrature axis current and direct axis current of the driving assembly, the angular speed of the rotor is collected without arranging an additional detection component, the direct axis inductance and the stator resistance value of the driving component are inherent data, may be stored within the control module, and may be stored in correspondence with the model and/or type of drive assembly, when the two data are needed to be used, the control module calls the driving component according to the model and/or the type of the driving component, and then realize the acquirement to the quadrature axis back electromotive force, the acquisition process is simple, convenient, need not complicated detection part, also need not complicated calculation, has simplified the operand among the drive assembly demagnetization protection process, and control module can judge whether there is the risk of taking place permanent demagnetization drive assembly fast for the protection to drive assembly is more timely effective.

In one aspect of the present invention, obtaining the direct-axis back electromotive force of the driving assembly includes: acquiring a direct-axis voltage of a driving assembly; acquiring quadrature axis current of a driving assembly; acquiring direct-axis current of a driving assembly; collecting the rotor angular speed of the driving assembly; and acquiring the direct-axis counter electromotive force of the driving assembly according to the direct-axis voltage, the direct-axis current, the quadrature-axis inductance of the driving assembly, the stator resistance value of the driving assembly and the rotor angular speed.

In the technical scheme, the control module can obtain the direct-axis voltage, the direct-axis current and the quadrature-axis current of the driving component, the angular speed of the rotor is collected without arranging an additional detection component, the quadrature axis inductance and the stator resistance value of the driving component are inherent data, may be stored within the control module, and may be stored in correspondence with the model and/or type of drive assembly, when the two data are needed to be used, the control module calls the driving component according to the model and/or the type of the driving component, and then realize the acquisition to the direct axis back electromotive force, the acquisition process is simple, convenient, need not complicated detection part, also need not complicated calculation, has simplified the operand among the drive assembly demagnetization protection course, and control module can judge whether there is the risk of taking place permanent demagnetization drive assembly fast for the protection to drive assembly is more timely effective.

In an embodiment of the present invention, before controlling the driving component to stop based on the condition that the demagnetization protection value is smaller than the demagnetization protection threshold, the method for controlling the driving component further includes: and acquiring a demagnetization protection threshold value according to the rated flux linkage of the driving assembly, the demagnetization coefficient of the driving assembly and the rotor angular speed of the driving assembly.

In the technical scheme, the control module calculates the demagnetization protection threshold value of the driving component according to the rated flux linkage of the driving component, the demagnetization coefficient of the driving component and the rotor angular speed of the driving component, so that the demagnetization protection threshold value is more accurate, and the driving component is further effectively protected.

In an embodiment of the present invention, before obtaining the demagnetization protection threshold according to the rated flux linkage of the driving component, the demagnetization factor of the driving component, and the rotor angular velocity of the driving component, the method for controlling the driving component further includes: and acquiring the demagnetization coefficient of the driving component according to the temperature rise threshold value of the driving component.

According to the technical scheme, according to a temperature rise threshold value, the demagnetization coefficient of the driving assembly is obtained, and different temperature rise threshold values correspond to different demagnetization coefficients, so that a demagnetization protection threshold value can be determined according to the temperature rise threshold value; because the drive assembly of different grade type possesses different temperature rise threshold values, demagnetization protection threshold value corresponds with the temperature rise threshold value for demagnetization protection threshold value is more accurate, and then makes the protection to drive assembly more reasonable.

In one aspect of the present invention, the method for controlling the driving assembly further includes: and controlling the alarm component to send out an alarm based on the condition that the demagnetization protection value is smaller than the demagnetization protection threshold value.

In the technical scheme, the control module can control the driving assembly to stop based on the condition that the demagnetization protection value is smaller than the demagnetization protection threshold value, and meanwhile, an alarm is sent to a user to remind the user that the driving assembly stops due to a fault, so that the user can timely overhaul the driving assembly, and the influence on the normal use of the equipment by the user due to the fault stop of the driving assembly is avoided.

A second aspect of the present invention provides an air conditioner comprising a memory and a processor; the memory is configured to store executable instructions; the processor is configured to execute the stored instructions to implement the steps of the control method of the driving assembly according to any one of the above-mentioned technical solutions, and therefore, the air conditioner has all the advantages of the control method of the driving assembly according to any one of the above-mentioned technical solutions.

A third aspect of the present invention provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the method for controlling a drive assembly according to any one of the above-mentioned technical solutions, and therefore, has all the advantages of the method for controlling a drive assembly according to any one of the above-mentioned technical solutions.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 shows a flow chart of a control method of a drive assembly according to one embodiment of the invention;

FIG. 2 shows a flow chart of a control method of a drive assembly according to another embodiment of the invention;

FIG. 3 shows a flow chart of a control method of a drive assembly according to yet another embodiment of the invention;

FIG. 4 shows a flow chart of a control method of a drive assembly according to yet another embodiment of the invention;

FIG. 5 shows a flow chart of a control method of a drive assembly according to yet another embodiment of the invention;

FIG. 6 shows a flow chart of a control method of a drive assembly according to yet another embodiment of the invention;

fig. 7 shows a flow chart of a control method of a drive assembly according to a further embodiment of the invention;

fig. 8 shows a flowchart of a control method of a drive assembly according to yet another embodiment of the invention;

fig. 9 shows a flowchart of a control method of a driving assembly according to still another embodiment of the present invention.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A control method of the driving assembly, an air conditioner, and a computer-readable storage medium according to some embodiments of the present invention are described below with reference to fig. 1 to 9.