Method for controlling rotating speed of compressor of air conditioner

Abstract

The invention discloses a method for controlling the rotating speed of a compressor of an air conditioner. The method includes the processes of controlling the compressor according to the real-time angular speed and the torque; the process of controlling the compressor according to the real-time angular speed includes the following steps that filtering processing is performed on the axis error, and the angular speed compensation quantity is acquired; the compensated angular speed output quantity is acquired according to the angular speed compensation quantity; the real-time angular speed is corrected according to the compensated angular speed output quantity, and the compressor is controlled; the process of controlling the compressor according to the torque includes the following steps that the difference between the target angular speed fluctuation quantity and the fed-back angular speed quantity is calculated, and the first angular speed difference is acquired; filtering processing is performed on the first angular speed difference, and the filtered angular speed is acquired; the filtered angular speed is input into a speed loop regulator, and the output torque is acquired; the torque compensation quantity is acquired according to the first angular speed difference; the compensated output torque is acquired according to the torque compensation quantity and the output torque,and the compressor is controlled. By the aid of the method, the effectiveness of suppressing of the fluctuation 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 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, which easily causes large speed fluctuations and the compressor does not run smoothly. The unstable operation of the compressor will lead to unstable operation of the entire air conditioning 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-rotor...

AI Technical Summary

Problems solved by technology

[0003] Although there are methods to control 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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