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Compressor torque compensation method, device, compressor and control method thereof

A torque compensation and compressor technology, applied in the field of compressors, can solve the problems of single sine wave or triangular wave torque compensation, inability to obtain vibration suppression effect, etc., and achieve the effect of ensuring stable operation and reducing vibration

Active Publication Date: 2018-08-17
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the different designs of different compressor cylinders, the actual torque fluctuation is not a simple sine wave or triangular wave, and the single use of sine wave or triangular wave for torque compensation cannot obtain the best vibration suppression effect

Method used

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  • Compressor torque compensation method, device, compressor and control method thereof
  • Compressor torque compensation method, device, compressor and control method thereof
  • Compressor torque compensation method, device, compressor and control method thereof

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Embodiment Construction

[0047] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0048] The following describes the compressor torque compensation method and device, the compressor and its control method according to the embodiments of the present invention with reference to the accompanying drawings.

[0049] figure 1 is a flowchart of an air compressor torque compensation method according to an embodiment of the present invention. Such as figure 1 As shown, the compressor torque compensation method includes the following steps:

[0050] S1, acquiring the target speed and the feedback speed of the compres...

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Abstract

The invention discloses a torque compensating method and device for a compressor as well as the compressor and a control method thereof, wherein the torque compensating method comprises the following steps of: obtaining target speed and feedback speed of the compressor, and generating a speed fluctuation curve according to the target speed and the feedback speed; performing Fourier transform on the speed fluctuation curve to obtain fundamental wave speed and harmonic wave speed; calculating corresponding base wave torque compensating current and harmonic wave torque compensating current according to the fundamental wave speed and the harmonic wave speed; and calculating torque compensating current according to operation frequency of the compressor, fundamental wave torque compensating current and harmonic wave torque compensating current, and performing torque compensation on the compressor according to the torque compensating current. The method can reduce vibration during low-frequency operation of the compressor, and ensures stable operation of the compressor.

Description

technical field [0001] The invention relates to the technical field of compressor control, in particular to a compressor torque compensation method, a compressor control method, a compressor torque compensation device and a compressor. Background technique [0002] The single-rotor compressor widely used in inverter air conditioners has the advantages of small size, high energy efficiency and low cost. However, during the rotation of the single-rotor compressor, there are periodic fluctuations in torque, especially when it is running at low frequency, it is easy to cause vibration of the air conditioning system, affect the life of the refrigeration system pipeline, and generate noise that affects comfort. [0003] In the traditional variable frequency motor vector control system, there is always a phase lag in the control of the speed loop. In order to reduce the rotary vibration, feedforward torque compensation is usually added. For example, 1. Use PLL (Phase Locked Loop) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C28/00F04C29/00H02P21/20H02P21/22H02P21/05
CPCF04C28/00F04C29/00H02P21/05
Inventor 梁国强张国柱
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD