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Compressor rotating speed fluctuation suppression method and device

A compressor speed and fluctuation suppression technology, applied in the direction of suppressing motor vibration control, etc., can solve the problems of unsatisfactory fluctuation suppression effect and compressor speed fluctuation, and achieve the effect of rapid suppression, reduction of periodic fluctuations and stable operation.

Pending Publication Date: 2019-04-19
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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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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  • Compressor rotating speed fluctuation suppression method and device
  • Compressor rotating speed fluctuation suppression method and device
  • Compressor rotating speed fluctuation suppression method and device

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Embodiment Construction

[0042] 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.

[0043] See figure 1 , which is a flowchart of an embodiment of a method for suppressing fluctuations in the rotational speed of a compressor based on the present invention.

[0044] 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:

[0045] Step 11: Obtain an axis error Δθ reflecting the deviation between the actual position and the estimated position of the compressor rotor.

[0046] 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 loop is ...

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Abstract

The invention discloses a compressor rotating speed fluctuation suppression method and device. The method comprises the steps: obtaining a shaft error reflecting the deviation between an actual position and an estimated position of a compressor rotor; performing filtering processing on the shaft error to obtain at least part of shaft error compensation quantity after shaft error fluctuation is filtered out; inputting the shaft error compensation quantity as an input quantity into a phase-locked loop regulator of a phase-locked loop for controlling a compressor; and correcting the real-time angular velocity for controlling the compressor by using the output angular velocity of the phase-locked loop regulator, and controlling the compressor according to the corrected real-time angular velocity. The method can improve the effectiveness of compressor rotating speed fluctuation suppression.

Description

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

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Application Information

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IPC IPC(8): H02P23/04
CPCH02P23/04Y02B30/70
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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