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Method and device for restraining rotating speed fluctuation of air conditioner compressor

A technology for air-conditioning compressors and speed fluctuations, applied in the direction of suppressing motor vibration control, etc., can solve the problems of compressor speed fluctuations and unsatisfactory fluctuation suppression effects, and achieve the effects of reducing speed fluctuations, improving control effects, and quickly suppressing

Active Publication Date: 2019-04-23
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 restraining rotating speed fluctuation of air conditioner compressor
  • Method and device for restraining rotating speed fluctuation of air conditioner compressor
  • Method and device for restraining rotating speed fluctuation of air conditioner compressor

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Embodiment Construction

[0050] 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.

[0051] 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.

[0052] 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:

[0053] Step 11: Obtain an axis error Δθ reflecting the deviation between the actual position and the estimated position of the compressor rotor.

[0054] 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 a device for restraining the rotating speed fluctuation of an air conditioner compressor. The method comprises the steps of obtaining a shaft error reflecting thedeviation between the actual position and the estimated position of a compressor rotor; carrying out filtering treatment on the shaft error, obtaining a correction shaft error and a corresponding angular velocity compensation dosage thereof, wherein at least one part of the shaft error fluctuation of the correction shaft error is filtered; compensating the angular velocity compensation dosage intothe output angular velocity of a phase-locked loop regulator in a phase-locked loop of the compressor so as to obtain a compensated angular velocity output quantity; extracting the direct current component of the angular velocity compensation quantity, adopting the direct current component and the output angular velocity of the phase-locked loop regulator as input variables, and inputting the input variables into the speed loop regulator of a speed loop for controlling the compressor; according to the compensated angular velocity output quantity, correcting the real-time angular velocity forcontrolling the compressor; and controlling the compressor according to the corrected real-time angular velocity and the output torque of the speed loop regulator. By applying the method, the fluctuation suppression effectiveness of the compressor rotating speed can be improved.

Description

technical field [0001] The invention belongs to the technical field of motor control, and in particular relates to compressor control technology, and more specifically relates to a method and a device for suppressing fluctuations in 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 especia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P23/04
CPCH02P23/04
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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