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Method for compressor speed control

A compressor speed and compressor technology, applied in heating and ventilation control systems, applications, refrigerators, etc., can solve the problems of compressor speed fluctuations and unsatisfactory speed fluctuation suppression effects, so as to reduce fluctuations and improve fluctuation suppression effects , the effect of improving stability

Active Publication Date: 2021-08-24
CHONGQING HAIER AIR CONDITIONER CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although there are methods to control the speed of the compressor in the prior art, the effect of suppressing the fluctuation of the speed is not ideal, and the problem of the fluctuation of the speed of the compressor cannot be fundamentally solved.

Method used

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  • Method for compressor speed control
  • Method for compressor speed control

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Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] figure 1 and figure 2 Partial flowcharts of an embodiment of the method for controlling the rotational speed of a compressor based on the present invention are respectively shown. Specifically, the rotation speed control method of this embodiment includes two processes: one is the process of controlling the compressor according to the real-time angular velocity, the flow chart is as follows figure 1 Shown; one is the process of controlling the compressor according to the torque, the flow chart is as follows figure 2 shown. The following is based on figure 1 and figure 2 , while combining image 3 A control block diagram is shown, respectively describing the concrete realization of these two processes.

[0031] See figure 1 Shown i...

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Abstract

The invention discloses a method for controlling the rotational speed of a compressor, including the process of controlling the compressor according to the real-time angular velocity and torque; the process of controlling the compressor according to the real-time angular velocity includes: filtering the shaft error to obtain the angular velocity compensation amount; The angular velocity compensation amount is compensated to the output angular velocity of the phase-locked loop regulator to obtain the compensated angular velocity output; the real-time angular velocity is corrected according to the compensated angular velocity output, and the compressor is controlled according to the corrected real-time angular velocity; according to the torque The process of controlling the compressor includes: calculating the difference between the target angular velocity fluctuation and the output angular velocity of the phase-locked loop regulator to obtain a first angular velocity difference; filtering the first angular velocity difference to obtain a filtered angular velocity; The filtered angular velocity is input to a speed loop regulator to obtain an output torque; the compressor is controlled according to the output torque. By applying the present invention, the effectiveness of suppressing the fluctuation of the rotational speed of the compressor can be improved.

Description

technical field [0001] The invention belongs to the technical field of motor control, in particular relates to the compressor control technology, and more specifically relates to a method for controlling the rotational speed of the compressor. Background technique [0002] When the compressor used in the air conditioner is running, it is affected by the working principle and control technology of the air conditioner as a load, which makes the load torque of the compressor extremely unstable, easily causing large speed fluctuations, and the compressor is not running smoothly. The unstable operation of the compressor will lead to unstable operation of the entire air conditioner system, causing various adverse effects. Moreover, the unstable operation will also generate relatively large operating noise, which cannot meet the requirements of relevant noise standards and affect the comfort of the air conditioner. This phenomenon is especially serious in single-rotor compressors....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B49/02F24F11/86F04C28/08F04C28/28
Inventor 史为品刘玮玮刘运涛董金盛吕兴宇
Owner CHONGQING HAIER AIR CONDITIONER CO LTD
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