A method for controlling the speed of a single-rotor compressor
A single-rotor compressor, speed control technology, applied in pump control, mechanical equipment, machine/engine, etc., can solve the problems of compressor speed fluctuation and the effect of speed fluctuation suppression is not ideal, so as to reduce the fluctuation and improve the fluctuation suppression effect. , the effect of reducing cyclical fluctuations
Active Publication Date: 2021-11-23
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
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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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[0031] 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.
[0032] figure 1 with figure 2 Partial flow charts of an embodiment of the method for controlling the rotational speed of a single-rotor compressor based on the present invention are respectively shown. Specifically, the rotation speed control method of this embodiment includes two processes: one is the process of controlling the compressor according to the real-time angular velocity, the flow chart is as follows figure 1 Shown; one is the process of controlling the compressor according to the torque, the flow chart is as follows figure 2 shown. The following is based on figure 1 with figure 2 , while combining image 3 A control block diagram is shown, respectively describing the concrete realization of these two processes.
[0033] See ...
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The invention discloses a speed control method of a single-rotor compressor, including the process of controlling the compressor according to the real-time angular velocity and torque; the process of controlling the compressor according to the real-time angular velocity includes: filtering the shaft error to obtain the angular velocity compensation amount; The compensation amount is compensated to the output angular velocity of the phase-locked loop regulator to obtain the compensated angular velocity output; the real-time angular velocity is corrected according to the compensated angular velocity output, and the compressor is controlled according to the corrected real-time angular velocity; according to the torque control The process of the compressor includes: calculating the difference between the target angular velocity fluctuation and the feedback angular velocity to obtain the first angular velocity difference; filtering the first angular velocity difference to obtain the filtered angular velocity; inputting the filtered angular velocity to the speed loop A regulator for obtaining an output torque; and controlling the compressor according to the output torque. 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, in particular relates to compressor control technology, more specifically relates to a speed control method for 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 serious in single-rotor compre...
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IPC IPC(8): F04C28/08F04C28/28
CPCF04C28/08F04C28/28F04C2270/0525
Inventor 史为品张海群高孺綦军曹祥祥李涌江徐贝贝许国景徐勤耀寇秋莉董金盛刘聚科程永甫刘娟
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD