Method for controlling rotating speed of single-rotor compressor

Abstract

The invention discloses a method for controlling the rotating speed of a single-rotor compressor. The method comprises the process of controlling the compressor according to the real-time angular velocity and the process of controlling the compressor according to the torque, wherein the process of controlling the compressor according to the real-time angular velocity comprises the following stepsthat filtering processing is carried out on the shaft error so as to obtain the shaft error compensation amount; the shaft error compensation amount is input to a phase-locked loop adjuster so as to obtain the output angular velocity of the phase-locked loop adjuster; and the real-time angular velocity is corrected by utilizing the output angular velocity, and the compressor is controlled according to the corrected real-time angular velocity. The process of controlling the compressor according to the torque comprises the following steps that the difference between the target angular velocity fluctuation amount and the output angular velocity of the phase-locked loop adjuster is calculated so as to obtain a first angular velocity difference value; filtering processing is carried out on thefirst angular velocity difference value to obtain the filtering angular velocity; the filtering angular velocity is input to a speed loop regulator so as to obtain the output torque; and the compressor is controlled according to the output torque. By applying the method, the effectiveness of fluctuation inhibition of the rotating 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 for controlling 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 especially serio...

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.

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