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A method and device for controlling the speed of a single-rotor compressor

A single-rotor compressor and compressor technology, which is applied in the direction of suppressing motor vibration control, machine/engine, etc., can solve the problems of unsatisfactory speed fluctuation suppression effect and compressor speed fluctuation, so as to improve the control effect and reduce the speed fluctuation , running smoothly

Active Publication Date: 2021-07-23
CHONGQING HAIER AIR CONDITIONER CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although there are methods for controlling the speed of the compressor in the prior art, the effect of suppressing the fluctuation of the speed is not ideal, and the problem of the fluctuation of the speed of the compressor cannot be fundamentally solved.

Method used

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  • A method and device for controlling the speed of a single-rotor compressor
  • A method and device for controlling the speed of a single-rotor compressor
  • A method and device for controlling the speed of a single-rotor compressor

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Embodiment Construction

[0049] 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.

[0050] See figure 1 , which is a flowchart of an embodiment of the method for controlling the rotational speed of a single rotor compressor based on the present invention.

[0051] Such as figure 1 shown, combined with figure 2 A control block diagram is shown, and this embodiment adopts the process that comprises the following steps to realize the speed control of the compressor:

[0052] Step 11: Obtain an axis error Δθ reflecting the deviation between the actual position and the estimated position of the compressor rotor.

[0053] 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 as foll...

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Abstract

The invention discloses a method and device for controlling the rotational speed of a single-rotor 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 shaft error compensation amount after filtering out some shaft error fluctuations; the shaft error compensation amount is input into the phase-locked loop regulator in the phase-locked loop for compressor control as an input amount, and the output of the phase-locked loop regulator is obtained Angular velocity; the output angular velocity of the phase-locked loop regulator is input to the speed loop regulator in the compressor control speed loop as an input to obtain the output torque of the speed loop regulator; using the phase-locked loop regulator The output angular velocity is corrected for the real-time angular velocity used for compressor control, and the compressor is controlled 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, specifically relates to compressor control technology, and more specifically relates to a method and device for controlling the rotational speed of a single-rotor 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C28/08F04C28/28H02P23/04
Inventor 史为品许国景刘娟刘聚科程永甫
Owner CHONGQING HAIER AIR CONDITIONER CO LTD
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