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Motor, compressor and air conditioner

A compressor and permanent magnet motor technology, applied in the field of compression equipment, can solve the problems that the motor parameters have a great influence on the performance of the whole machine, the compressor cannot achieve high-speed operation, the back EMF, and the inductance parameter are large, so as to improve the operation stability performance, reduce inductance, and increase the effect of operating speed

Active Publication Date: 2020-03-27
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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AI Technical Summary

Problems solved by technology

[0002] In the high-efficiency design of the compressor, after the structure is basically finalized, its motor parameters have a great influence on the performance of the whole machine, mainly because the design selection of the motor's back EMF is particularly important; and when the material does not make major changes, it is mainly to increase the back EMF The solution is to increase the number of turns of the motor, which will lead to an increase in the inductance of the motor
Therefore, the back electromotive force and inductance parameters of conventional ordinary compressor motors are relatively large, and in the normal operation process, the motor inductance will cause the voltage at the motor terminal to be high, and due to the influence of the saturation voltage of the controller, the compressor cannot achieve high-speed operation

Method used

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  • Motor, compressor and air conditioner
  • Motor, compressor and air conditioner
  • Motor, compressor and air conditioner

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Embodiment Construction

[0018] see in conjunction Figure 1 to Figure 2 As shown, according to the embodiment of the present application, a motor is provided, and the operating parameters of the motor satisfy: 0.6mH≤Ld≤3mH, 1mH≤Lq≤4mH; -0.4mH≤Lq-Ld≤2mH; wherein, Ld is the d-axis inductance, Lq is the q-axis inductance of the motor.

[0019] During the design process of the motor of the rotor compressor, it operates at different frequencies, and its motor terminal voltage conforms to the following voltage formula;

[0020]

[0021] Among them, under the special controller, if the motor is to run at the required speed, it needs to meet U≤U0 at the speed, U is the effective value of the motor running terminal voltage; E is the motor induction potential corresponding to different ω speeds; Lq , Ld are the q-axis and d-axis inductance of the motor respectively; Iq and Id are the q-axis and d-axis current components of the compressor running under a certain working condition; U0 is the effective value ...

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Abstract

The invention provides a motor, a compressor and an air conditioner. The operating parameters of the motor meet the following conditions: 0.6 mH <= Ld <= 3mH, and 1mH <= Lq <= 4mH; -0.4 mH <= Lq-Ld <=2mH; wherein Ld is the d-axis inductance of the motor, and Lq is the q-axis inductance of the motor. According to the motor, the motor operation parameters can be optimized, the motor operation rotating speed is effectively improved, and the motor operation stability is improved.

Description

technical field [0001] The present application relates to the technical field of compression equipment, in particular to a motor, a compressor and an air conditioner. Background technique [0002] In the high-efficiency design of the compressor, after the structure is basically finalized, its motor parameters have a great influence on the performance of the whole machine, mainly because the design selection of the motor's back EMF is particularly important; and when the material does not make major changes, it is mainly to increase the back EMF The solution is to increase the number of turns of the motor, which will lead to an increase in the inductance of the motor. Therefore, the motor back EMF and inductance parameters of conventional ordinary compressors are large, and during normal operation, the motor inductance will lead to high voltage at the motor terminal, which is affected by the saturation voltage of the controller, causing the compressor to fail to operate at hi...

Claims

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Application Information

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IPC IPC(8): H02K3/04F04B35/04
CPCF04B35/04H02K3/04H02K2213/03
Inventor 周博魏会军徐嘉陈华杰王珺张金圈梁社兵徐培荣贺申淦胡文祥柳鹏余冰刘靖
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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