Method and device for suppressing speed fluctuation of air conditioner compressor

A technology for air-conditioning compressors and speed fluctuations, which is applied in the direction of controlling electromechanical transmissions, electromechanical brakes, and generators. It can solve problems such as unsatisfactory fluctuation suppression effects and compressor speed fluctuations, and achieve stable output torque. The effect of speed fluctuation and smooth operation

Active Publication Date: 2021-10-29
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
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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 for suppressing speed fluctuation of air conditioner compressor
  • Method and device for suppressing speed fluctuation of air conditioner compressor
  • Method and device for suppressing speed fluctuation of air conditioner compressor

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Embodiment Construction

[0051] 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.

[0052] See figure 1 , which is a flowchart of an embodiment of the method for suppressing the fluctuation of the rotation speed of the air conditioner compressor based on the present invention.

[0053] 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:

[0054] Step 11: Obtain an axis error Δθ reflecting the deviation between the actual position and the estimated position of the compressor rotor.

[0055] 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 the ...

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Abstract

The invention discloses a method and device for suppressing the fluctuation of the rotation speed of an air-conditioning compressor. The method includes: obtaining an axis error reflecting the deviation between the actual position and the estimated position of the compressor rotor; filtering the axis error to obtain at least The corrected axis error and its corresponding angular velocity compensation amount after filtering out some axis error fluctuations; the angular velocity compensation amount is compensated to the output angular velocity of the phase-locked loop regulator in the compressor phase-locked loop, and the compensated angular velocity output amount is obtained; The output of the compensated angular velocity is input to the speed loop regulator in the speed loop for compressor control as an input; the real-time angular velocity for compressor control is corrected according to the output of the compensated angular velocity, and according to the corrected The real-time angular velocity and the output torque of the speed loop regulator control the compressor. 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, 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 Patents(China)
IPC IPC(8): H02P21/05
Inventor 史为品张新徐贝贝刘聚科程永甫
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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