CN-122015363-A - Compressor control method, device, medium and air conditioner

CN122015363ACN 122015363 ACN122015363 ACN 122015363ACN-122015363-A

Abstract

The invention discloses a compressor control method, a device, a medium and an air conditioner, which are used for controlling the operation of a compressor by acquiring vibration risk parameters of the compressor, respectively triggering an energy efficiency mode or a vibration suppression mode according to the vibration risk parameters and correspondingly determining target torque compensation coefficients and target operation frequencies under the two modes, the scheme breaks the limitation of the traditional single frequency-torque compensation coefficient mapping relation, the control strategy can be dynamically switched according to vibration risks, the energy efficiency is improved through the adaptive compensation coefficient and frequency guarantee when the energy efficiency mode is triggered, the mechanical resonance under the low-frequency working condition is effectively restrained through the corresponding parameter combination when the vibration suppression mode is triggered, and the operation stability is improved, so that the energy efficiency is improved and the accurate balance of the operation stability optimization is realized.

Inventors

LI SHUANGLONG
Mai Haoqin
XIONG JUN

Assignees

TCL空调器(中山)有限公司

Dates

Publication Date: 20260512
Application Date: 20260225

Claims (11)

1. A method of controlling a compressor, the method comprising: obtaining vibration risk parameters of the compressor, wherein the vibration risk parameters are parameters for representing the risk degree of mechanical resonance in the running process of the air conditioner compressor; when the vibration risk parameter triggers the operation condition of the energy efficiency mode, determining a first target torque compensation coefficient and a first target operation frequency in the energy efficiency mode, and controlling the operation of the compressor based on the first target torque compensation coefficient and the first target operation frequency; and when the vibration risk parameter triggers the operation condition of the vibration suppression mode, determining a second target torque compensation coefficient and a second target operation frequency in the vibration suppression mode, and controlling the operation of the compressor based on the second target torque compensation coefficient and the second target operation frequency.
2. The compressor control method of claim 1, wherein the vibration risk parameter includes at least one of a current harmonic amplitude, a torque ripple rate, and a winding temperature ripple rate of the compressor, and further comprising, after the obtaining the vibration risk parameter of the compressor: If the current harmonic amplitude meets a first condition and the torque fluctuation rate meets a second condition and the winding temperature meets a third condition within a first preset duration, judging that the vibration risk parameter triggers an operation condition of an energy efficiency mode, wherein the first condition is that the current harmonic amplitude is smaller than or equal to a first harmonic amplitude threshold value, the second condition is that the torque fluctuation rate is smaller than or equal to a first fluctuation rate threshold value, and the third condition is that the winding temperature is smaller than or equal to a second fluctuation rate threshold value; And if the current harmonic amplitude does not meet the first condition, and/or the torque fluctuation rate does not meet the second condition, and/or the winding temperature does not meet the third condition, judging that the vibration risk parameter triggers the operation condition of the vibration suppression mode.
3. The compressor control method of claim 1, wherein determining the first target torque compensation coefficient and the first target operating frequency in the energy efficiency mode comprises: In the energy efficiency mode, determining an operating frequency when the compressor energy efficiency ratio is maximum as a first target operating frequency; And acquiring a first mapping relation, and determining a torque compensation coefficient corresponding to the first target operating frequency in the first mapping relation as a first target torque compensation coefficient, wherein the first mapping relation is used for realizing the maximization of the compressor energy efficiency, and is constructed between the operating frequency and the torque compensation coefficient.
4. The compressor control method according to claim 3, wherein the determination of the first map includes: Obtaining a first test matrix, wherein the first test matrix represents vibration amplitude, current harmonic amplitude, torque fluctuation rate and winding temperature of a compressor under different running frequencies and different torque compensation coefficients under a test environment; Screening the first test matrix based on a first screening condition to obtain a screened first test matrix, wherein the first screening condition comprises that the vibration amplitude is smaller than a first vibration amplitude threshold value, the current harmonic amplitude is smaller than a second harmonic amplitude threshold value, the torque fluctuation rate is smaller than a second fluctuation rate threshold value, and the winding temperature is smaller than a first temperature threshold value; And in the screened first test matrix, matching the torque compensation coefficient which enables the upper limit of the operating frequency to be maximum for each operating frequency so as to obtain a first mapping relation.
5. The compressor control method of claim 1, wherein the controlling the operation of the compressor based on the first target torque compensation coefficient and a first target operating frequency comprises: acquiring the current running frequency and the current torque compensation coefficient of the compressor; And performing up-regulation processing on the current operating frequency at a preset first rate, and updating the current torque compensation coefficient based on a first mapping relation and the current operating frequency until the current operating frequency is equal to the first target operating frequency and the current torque compensation coefficient is equal to the first target torque compensation coefficient, wherein the first mapping relation is a mapping relation between the constructed operating frequency and the torque compensation coefficient for realizing energy maximization of the compressor.
6. The compressor control method of claim 1, wherein determining the second target torque compensation coefficient and the second target operating frequency in the vibration suppression mode comprises: In the vibration suppression mode, determining the operating frequency of the compressor when the vibration amplitude is minimum as a second target operating frequency; And acquiring a second mapping relation, and determining a torque compensation coefficient corresponding to the second target operating frequency in the second mapping relation as a second target torque compensation coefficient, wherein the second mapping relation is used for realizing the maximization of the vibration suppression effect of the compressor, and is constructed between the operating frequency and the torque compensation coefficient.
7. The compressor control method of claim 6, wherein the manner of determining the second map includes: Obtaining a second test matrix, wherein the second test matrix represents vibration amplitude, current harmonic amplitude, torque fluctuation rate and winding temperature of the compressor under different running frequencies and different torque compensation coefficients under a test environment; Screening the second test matrix based on a second screening condition to obtain a screened second test matrix, wherein the second screening condition comprises that the vibration amplitude is smaller than a second vibration amplitude threshold value, the current harmonic amplitude is smaller than a third harmonic amplitude threshold value, the torque fluctuation rate is smaller than a third fluctuation rate threshold value, and the winding temperature is smaller than a second temperature threshold value; And in the screened second test matrix, matching a torque compensation coefficient which minimizes the torque fluctuation rate for each operation frequency to obtain a second mapping relation.
8. The compressor control method of claim 1, wherein the controlling the operation of the compressor based on the second target torque compensation coefficient and a second target operating frequency comprises: acquiring the current running frequency and the current torque compensation coefficient of the compressor; Calculating the difference value between the second target torque compensation coefficient and the current torque compensation coefficient to obtain a coefficient difference value; And carrying out down-regulation processing on the current running frequency at a preset second rate, and carrying out proportional regulation on the current torque compensation coefficient based on the time proportion between the down-regulation time and the total target regulation time and the coefficient difference value until the current running frequency is equal to the second target running frequency and the current torque compensation coefficient is equal to the second target torque compensation coefficient.
9. A compressor control device is characterized in that, the compressor control device includes: The system comprises a parameter acquisition module, a vibration risk parameter acquisition module and a control module, wherein the parameter acquisition module is used for acquiring vibration risk parameters of the compressor, wherein the vibration risk parameters are parameters used for representing the risk degree of mechanical resonance in the operation process of the air conditioner compressor; The first operation module is used for determining a first target torque compensation coefficient and a first target operation frequency in the energy efficiency mode when the vibration risk parameter triggers the operation condition of the energy efficiency mode, and controlling the operation of the compressor based on the first target torque compensation coefficient and the first target operation frequency; and the second operation module is used for determining a second target torque compensation coefficient and a second target operation frequency in the vibration suppression mode when the vibration risk parameter triggers the operation condition of the vibration suppression mode, and controlling the operation of the compressor based on the second target torque compensation coefficient and the second target operation frequency.
10. A computer readable storage medium, characterized in that a computer program is stored, which, when being executed by a processor, causes the processor to perform the steps of the method according to any of claims 1 to 8.
11. An air conditioner comprising a memory and a processor, the memory storing a computer program which, when executed by the processor, causes the processor to perform the steps of the method of any one of claims 1 to 8.

Description

Compressor control method, device, medium and air conditioner Technical Field The present invention relates to the technical field of air conditioners, and in particular, to a method and an apparatus for controlling a compressor, a medium and an air conditioner. Background The mechanical resonance phenomenon is particularly remarkable when the air conditioner compressor runs under a low-frequency working condition (such as 10-50 Hz). The traditional control method only depends on a single frequency-torque compensation coefficient mapping relation to implement regulation and control, the mode is difficult to adapt to dynamic load change in a full frequency interval, and finally the contradiction between the two requirements of energy efficiency improvement and operation stability optimization of the compressor is difficult to solve. Disclosure of Invention Based on this, there is a need to provide a compressor control method, apparatus, medium and air conditioner to solve the problem that the contradiction between the two requirements of energy efficiency improvement and operation stability optimization in the prior art is difficult to solve. In a first aspect, an embodiment of the present application provides a compressor control method, including: obtaining vibration risk parameters of the compressor, wherein the vibration risk parameters are parameters for representing the risk degree of mechanical resonance in the running process of the air conditioner compressor; when the vibration risk parameter triggers the operation condition of the energy efficiency mode, determining a first target torque compensation coefficient and a first target operation frequency in the energy efficiency mode, and controlling the operation of the compressor based on the first target torque compensation coefficient and the first target operation frequency; and when the vibration risk parameter triggers the operation condition of the vibration suppression mode, determining a second target torque compensation coefficient and a second target operation frequency in the vibration suppression mode, and controlling the operation of the compressor based on the second target torque compensation coefficient and the second target operation frequency. In some embodiments of the present application, the vibration risk parameter includes at least one of a current harmonic amplitude, a torque ripple rate, and a winding temperature ripple rate of the compressor, and after the vibration risk parameter of the compressor is obtained, the method further includes: If the current harmonic amplitude meets a first condition and the torque fluctuation rate meets a second condition and the winding temperature meets a third condition within a first preset duration, judging that the vibration risk parameter triggers an operation condition of an energy efficiency mode, wherein the first condition is that the current harmonic amplitude is smaller than or equal to a first harmonic amplitude threshold value, the second condition is that the torque fluctuation rate is smaller than or equal to a first fluctuation rate threshold value, and the third condition is that the winding temperature is smaller than or equal to a second fluctuation rate threshold value; And if the current harmonic amplitude does not meet the first condition, and/or the torque fluctuation rate does not meet the second condition, and/or the winding temperature does not meet the third condition, judging that the vibration risk parameter triggers the operation condition of the vibration suppression mode. In some embodiments of the present application, the determining the first target torque compensation coefficient and the first target operating frequency in the energy efficiency mode includes: In the energy efficiency mode, determining an operating frequency when the compressor energy efficiency ratio is maximum as a first target operating frequency; And acquiring a first mapping relation, and determining a torque compensation coefficient corresponding to the first target operating frequency in the first mapping relation as a first target torque compensation coefficient, wherein the first mapping relation is used for realizing the maximization of the compressor energy efficiency, and is constructed between the operating frequency and the torque compensation coefficient. In some embodiments of the present application, the determining manner of the first mapping relationship includes: Obtaining a first test matrix, wherein the first test matrix represents vibration amplitude, current harmonic amplitude, torque fluctuation rate and winding temperature of a compressor under different running frequencies and different torque compensation coefficients under a test environment; Screening the first test matrix based on a first screening condition to obtain a screened first test matrix, wherein the first screening condition comprises that the vibration amplitude is smaller than a first vibration ampli