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Method and device of suppressing rotating speed fluctuation of air conditioner compressor

A compressor speed and air conditioner technology, applied in refrigerators, machines/engines, heating methods, etc., can solve the problems of compressor speed fluctuations and unsatisfactory fluctuation suppression effects, so as to reduce speed fluctuations, improve control effects, Smooth running effect

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 the prior art also has a method for suppressing the fluctuation of the compressor rotational speed, the fluctuation suppression effect is not ideal enough, and the problem of the fluctuation of the rotational speed of the compressor cannot be fundamentally solved

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  • Method and device of suppressing rotating speed fluctuation of air conditioner compressor
  • Method and device of suppressing rotating speed fluctuation of air conditioner compressor
  • Method and device of suppressing rotating speed fluctuation of air conditioner compressor

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Embodiment Construction

[0052] 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.

[0053] See figure 1 , which is a flowchart of an embodiment of the method for suppressing the fluctuation of the rotational speed of the air conditioner compressor based on the present invention.

[0054] Such as figure 1 shown, combined with figure 2 A control block diagram is shown, and this embodiment adopts a process including the following steps to realize the suppression of compressor speed fluctuations:

[0055] Step 11: Obtain an axis error Δθ reflecting the deviation between the actual position and the estimated position of the compressor rotor.

[0056] In compressor control, the phase of the compressor rotor can be locked by the phase-locked loop (PLL) control technology to lock it at the target phase. The control block diagram of th...

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Abstract

The invention discloses a method and device of suppressing the rotating speed fluctuation of an air conditioner compressor. The method comprises the steps that an axis error which reflects the deviation between the practical position and the presumptive position of a compressor rotor is acquired; the axis error is subjected to filtering treatment, so that a corrected axis error which is formed after at least one part of the axis error fluctuation is filtered away and the angular speed compensation quantity which corresponds to the corrected axis error are obtained; the angular speed compensation quantity compensates for the output angular speed of a phase-locked loop regulator in a phase-locked loop of the compressor, so that the compensated angular speed output quantity is obtained; meanwhile, the direct-current portion of the angular speed compensation quantity is extracted, and the direct-current portion and the compensated angular speed output quantity are inputted into a speed loop regulator in a speed loop for compressor control by serving as the input quantities; and the real-time angular speed for compressor control is corrected according to the compensated angular speed output quantity, and the compressor is controlled according to the corrected real-time angular speed and the output torque of the speed loop regulator. By use of the method and device, the effectivenessof suppression of the rotating speed fluctuation of the compressor can be improved.

Description

technical field [0001] The invention belongs to the technical field of motor control, specifically relates to compressor control technology, and more specifically relates to a method and a device for suppressing the fluctuation of the rotational speed of an air conditioner 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 espec...

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 史为品吕兴宇许国景刘聚科程永甫
Owner CHONGQING HAIER AIR CONDITIONER CO LTD
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