Method for controlling rotation speed fluctuation of compressor of air conditioner

Abstract

The invention discloses a method for controlling the rotation speed fluctuation of the compressor of an air conditioner. The method involves a process for controlling the compressor according to a real-time angular velocity and a process for controlling the compressor according to a torque. The process for controlling the compressor according to the real-time angular velocity includes the following steps that: filtering processing is performed axis error, so that an axis error compensation quantity is obtained; the output angular velocity of a phase-locked loop regulator is obtained accordingto the axis error compensation quantity; and the real-time angular velocity is corrected with the output angular velocity. The process for controlling the compressor according to the torque includes the following steps that: a first angular velocity difference value is obtained according to a target angular velocity fluctuation quantity and the output angular velocity of the phase-locked loop regulator, filtering processing is performed on the first angular velocity difference value, so that a filtered angular velocity is obtained; the filtered angular velocity is inputted to the velocity loopregulator, so that an output torque is obtained; a torque compensation quantity is obtained according to the first angular velocity difference value; and a compensated output torque is obtained according to the torque compensation quantity and the output torque, and the compressor is controlled. With the method adopted, the effectiveness of the suppression of the fluctuation of the rotation speedof 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 fluctuation of 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 seri...

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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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