Method for restraining rotating speed fluctuation of single-rotor compressor

Abstract

The invention discloses a method for restraining rotating speed fluctuation of a single-rotor compressor. The method comprises the process of controlling the compressor according to the real-time angular speed and the step of controlling the compressor according to the force moment; the process of controlling the compressor according to the real-time angular speed comprises the steps that the axiserror is filtered, and the axis error compensation quantity is obtained; the axis error compensation quantity is input into a phase-locked loop adjuster, and the output angular speed of the phase-locked loop adjuster is obtained; the real-time angular speed is corrected through the output angular speed, and the compressor is controlled according to the corrected real-time angular speed; the process of controlling the compressor according to the force moment comprises the steps that the difference between the target angular speed fluctuation quantity and the output angular speed of the phase-locked loop adjuster is calculated, and a first angular speed difference value is obtained; the first angular speed difference value is filtered, and the filtered angular speed is obtained; the filtered angular speed is input into a speed loop adjuster, and the output force moment is obtained; and the compressor is controlled according to the output force moment. By applying the method, the effectiveness of restraining rotating speed fluctuation 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 for suppressing fluctuations in the rotational speed of a single-rotor compressor. Background technique [0002] When the single-rotor 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, which easily causes large speed fluctuations, and the compressor does not run smoothly. smooth. 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 ...

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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.

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