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Method, device and air conditioner for suppressing speed fluctuation of frequency conversion compressor

A frequency conversion compressor, speed fluctuation technology, applied in the direction of AC motor control, motor vibration suppression control, control system, etc., can solve the problem of interference compensation, etc., to reduce periodic speed fluctuations, suppress speed fluctuations, and realize torque compensation Effect

Active Publication Date: 2022-05-27
GREE ELECTRIC APPLIANCES INC
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  • Claims
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Problems solved by technology

For non-periodic disturbances, iterative learning control cannot compensate the disturbances through learning

Method used

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  • Method, device and air conditioner for suppressing speed fluctuation of frequency conversion compressor
  • Method, device and air conditioner for suppressing speed fluctuation of frequency conversion compressor
  • Method, device and air conditioner for suppressing speed fluctuation of frequency conversion compressor

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Embodiment Construction

[0065] As used herein, the terms "first," "second," etc. may be used to describe elements in an exemplary embodiment of the present invention. These terms are only used to distinguish one element from another, and the inherent characteristics or order of the corresponding elements are not limited by the terms. Unless otherwise defined, all terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Those terms as defined in common dictionaries are to be interpreted as having the same meanings as contextual meanings in the relevant technical fields, and are not to be interpreted as having ideal or overly formal meanings unless explicitly defined as having such meanings in the present invention meaning.

[0066] Those skilled in the art will understand that the apparatus and methods of the present invention described herein and illustrated in the accompanying drawin...

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Abstract

A variable frequency compressor speed fluctuation suppression method, including constructing a PD type iterative learning control model of a variable frequency compressor control system with a forgetting factor: setting the tracking error function of the variable frequency compressor control system; according to the control model and the tracking error function Iterative learning is performed, and when the control model satisfies a preset convergence condition, parameters in the control model at the time of convergence are used to control the variable frequency compressor. Also provided are an inverter compressor rotational speed fluctuation suppressing device, a non-transitory computer readable medium, and an air conditioner. The scheme of the present invention can reduce the periodic speed pulsation of the compressor, weaken the error accumulation problem caused by the non-periodic disturbance in the compressor system, reduce the influence of the time correlation of the compressor load on the speed fluctuation suppression effect, The torque compensation of the compressor torque is realized, so as to achieve the purpose of suppressing the speed fluctuation.

Description

technical field [0001] The present invention relates to the field of automatic control, and more particularly, to a method and device for suppressing speed fluctuation of a variable frequency compressor, an air conditioner and a non-transitory computer-readable medium. Background technique [0002] With the general improvement of people's living standards, air conditioners with various forms and complete functions have entered all walks of life and ordinary households, creating a comfortable temperature and humidity environment for people. [0003] Generally, the energy efficiency ratio of the compressor in the high frequency operation range is generally low, and the energy efficiency ratio in the low and medium frequency operation range is relatively high. However, in the inverter compressor control system, the compressor has obvious load torque pulsation during low-frequency operation, which is easy to cause large rotational speed fluctuations, and will bring low-frequency...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P23/00H02P23/04
CPCH02P23/0077H02P23/04
Inventor 刘武斌张杰添邝超洪盛帅
Owner GREE ELECTRIC APPLIANCES INC
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