Compressor control method, compressor system and refrigeration equipment

A technology of compressor system and control method, which is applied in the direction of control system, vector control system, control electromechanical brake, etc., can solve the problems of low efficiency and low efficiency of compressors

Active Publication Date: 2020-08-14
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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Problems solved by technology

[0004] Since the compressor control method continuously increases the field-weakening depth coefficient in the compressor according to the DC bus voltage, and the greater the field-weakening depth coefficient, the lower the efficiency of the corresponding compressor. Therefore, the existing compressor control method has low efficiency. Defects

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  • Compressor control method, compressor system and refrigeration equipment
  • Compressor control method, compressor system and refrigeration equipment
  • Compressor control method, compressor system and refrigeration equipment

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Embodiment Construction

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0051] It should be noted that the descriptions involving "first", "second" and so on in the present invention are only for the purpose of description, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical ...

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Abstract

The invention discloses a control method of a compressor, a compressor system and refrigeration equipment. The control method of the compressor comprises the following steps of acquiring a preset reference voltage when the compressor operates at a preset weak magnetic depth coefficient and a preset mechanical rotating speed; acquiring the current voltage of a direct current bus; when a preset reference voltage is larger than the current voltage of the direct current bus, increasing the weak magnetic depth coefficient to a maximum preset weak magnetic depth coefficient, then reducing the mechanical rotating speed until the current reference voltage is not larger than the current voltage of the direct current bus when the compressor operates at the current weak magnetic depth coefficient andthe current mechanical rotating speed; controlling the compressor to operate at the current weak magnetic depth coefficient and the current mechanical rotating speed. According to the technical scheme of the invention, the advantage of high efficiency is realized.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to a compressor control method, a compressor system and refrigeration equipment. Background technique [0002] The control method of the existing compressor is as follows: firstly, the DC bus voltage is detected; then, the compressor is controlled according to the detected DC bus voltage. Specifically, the field-weakening depth coefficient of the motor in the compressor is continuously increased according to the DC bus voltage, so that the compressor can run stably. [0003] Among them, the field-weakening depth coefficient represents the ratio of the direct-axis reverse flux linkage generated by the field-weakening current in the motor to the flux linkage of the permanent magnet. The larger the field-weakening depth coefficient, the lower the efficiency of the corresponding compressor. [0004] Since the compressor control method continuously increases the field-we...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/00F04B49/06
CPCF04B49/06H02P21/00
Inventor 黄招彬
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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