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A method and device for suppressing the fluctuation of compressor speed

A technology of compressor speed and compressor rotor, which is applied in the direction of suppressing motor vibration control, etc., can solve the problems of compressor speed fluctuation and fluctuation suppression effect not ideal, etc., achieve rapid suppression, improve fluctuation suppression effect, and improve stability

Active Publication Date: 2021-10-29
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
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Problems solved by technology

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

Method used

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  • A method and device for suppressing the fluctuation of compressor speed
  • A method and device for suppressing the fluctuation of compressor speed
  • A method and device for suppressing the fluctuation of compressor speed

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Embodiment Construction

[0047] 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.

[0048] See figure 1 , which is a flow chart of an embodiment of the method for suppressing the fluctuation of the rotational speed of the compressor based on the present invention.

[0049] 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:

[0050] Step 11: Obtain an axis error Δθ reflecting the deviation between the actual position and the estimated position of the compressor rotor.

[0051] 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 phase-locked ...

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Abstract

The invention discloses a method and device for suppressing the fluctuation of the rotational speed of a compressor. The method includes: acquiring 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 a filtered The shaft error compensation amount after removing some shaft error fluctuations; the shaft error compensation amount is input to the phase-locked loop regulator in the compressor control phase-locked loop as an input amount; the output angular velocity of the phase-locked loop regulator is utilized The real-time angular velocity used for compressor control is corrected, and the compressor is controlled according to the corrected real-time angular velocity. 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 device for suppressing fluctuations in 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 singl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P23/04
CPCH02P23/04
Inventor 史为品杨晓慧徐贝贝刘聚科程永甫
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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