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Method for controlling rotating speed of compressor

A technology of compressor speed and control method, which is applied in heating and ventilation control systems, refrigerators, heating methods, etc., can solve the problems of insufficient speed fluctuation suppression effect and compressor speed fluctuation, and achieve rapid suppression and reduction of speed fluctuations. , the effect of stable operation

Active Publication Date: 2019-05-07
CHONGQING HAIER AIR CONDITIONER CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Although there are methods for controlling 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 controlling rotating speed of compressor
  • Method for controlling rotating speed of compressor
  • Method for controlling rotating speed of compressor

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Embodiment Construction

[0024] 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.

[0025] 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.

[0026] See figure 1 Shown i...

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Abstract

The invention discloses a method for controlling the rotating speed of a compressor. The method includes the processes of controlling the compressor according to the real-time angular speed and the torque; the process of controlling the compressor according to the real-time angular speed includes the following steps that filtering processing is performed on the axis error, and the angular speed compensation quantity is acquired; the angular speed compensation quantity is compensated to the output angular speed of a phase-locked loop regulator, and the compensated angular speed output quantityis acquired; the real-time angular speed is corrected according to the compensated angular speed output quantity, and the compressor is controlled according to the corrected real-time angular speed; the process of controlling the compressor according to the torque includes the following steps that the difference between the target angular speed fluctuation quantity and the compensated angular speed output quantity is calculated, and the first angular speed difference is acquired; filtering processing is performed on the first angular speed difference, and the filtered angular speed is acquired; the filtered angular speed is input into a speed loop regulator, and the output torque is acquired; and the compressor is controlled according to the output torque. By the aid of the method, the effectiveness of suppressing of the fluctuation of the rotating 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 a compressor control technology, and more specifically relates to a method for controlling the rotational speed of a 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 Applications(China)
IPC IPC(8): F25B49/02F24F11/86F04C28/08F04C28/28
Inventor 史为品刘运涛刘光朋李相军曹壬艳
Owner CHONGQING HAIER AIR CONDITIONER CO LTD
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