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Air conditioner compressor speed fluctuation suppression method and device

A compressor speed and fluctuation suppression technology, which is applied in refrigeration and liquefaction, machines/engines, space heating and ventilation, etc., can solve the problems of compressor speed fluctuations and unsatisfactory fluctuation suppression effects, so as to reduce speed fluctuations, Stabilize output torque and improve control effect

Active Publication Date: 2021-07-23
CHONGQING HAIER AIR CONDITIONER CO LTD +2
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  • 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

Method used

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  • Air conditioner compressor speed fluctuation suppression method and device
  • Air conditioner compressor speed fluctuation suppression method and device
  • Air conditioner compressor speed fluctuation suppression method and device

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Embodiment Construction

[0044] 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.

[0045] See figure 1 , which is a flow chart of an embodiment of a method for suppressing fluctuations in rotational speed of an air conditioner compressor according to the present invention.

[0046] like 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:

[0047] Step 11: Obtain an axis error Δθ reflecting the deviation between the actual position and the estimated position of the compressor rotor.

[0048] 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-...

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Abstract

The invention discloses a method and device for suppressing rotation speed fluctuations of an air conditioner 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; at the same time , extracting the DC component of the angular velocity compensation amount, and inputting the DC component and the compensated angular velocity output into the speed loop regulator in the compressor control speed loop; according to the compensated angular velocity The output quantity corrects the real-time angular velocity used for compressor control, and controls the compressor according to the corrected real-time angular velocity and the output torque of the speed loop regulator. 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, and in particular relates to compressor control technology, and more specifically relates to a method and device for suppressing rotation speed fluctuation 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 especially seri...

Claims

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Application Information

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Patent Type & Authority Patents(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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