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Motor noise control method, computer readable storage medium and motor

A control method and computer program technology, which are applied in the direction of AC motor control, estimation/correction of motor parameters, and control systems, etc., can solve the problems of electromagnetic noise, motor noise and vibration, and current harmonic content. Harmonics, the effect of improving electromagnetic noise

Active Publication Date: 2021-02-09
GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the interaction between the stator magnetic field and the rotor magnetic field inside the motor, the operation of the internal magnetic field is complicated, and the current harmonic content is high, resulting in high harmonic electromagnetic force of the main noise source of the motor, resulting in high noise and vibration of the motor, causing electromagnetic noise
Because one motor often needs to match multiple air conditioner loads, when the same motor runs on different loads, it will generate noise at different speed points. The traditional solution to improve the noise point is to improve the mode of the whole machine or structure. To avoid noise points, a lot of changes and a lot of verification work are required, and there is a problem of long time and heavy workload

Method used

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  • Motor noise control method, computer readable storage medium and motor
  • Motor noise control method, computer readable storage medium and motor

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Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1, a method for controlling motor noise.

[0024] as attached Figures 1 to 2 As shown, a method for controlling motor noise in this embodiment includes the following steps: obtaining the current operating curve, real-time operating power P and operating speed N of the motor, and comparing the current operating curve with the preset current operating curve , when the difference between the current operating curve and the preset current operating curve exceeds the preset difference, according to the operating speed N and real-time operating power P of the motor, different operating carriers are adopted to control the motor.

[0025] Specifically, the acquisition of the voltage operation curve and current operation curve of the motor is specifically: collecting the operation current curves of the U-phase, V-phase, and W-phase of the motor, and obtaining the motor's operating current curves according to the U-phase, V-phase, and W-phase operating current curves ...

Embodiment 2

[0036] Embodiment 2, a computer-readable storage medium.

[0037] The present invention also provides a computer-readable storage medium for storing a computer program, and when the computer program is invoked by a processor, the motor noise control method described in Embodiment 1 is implemented.

Embodiment 3

[0038] Embodiment 3, a motor.

[0039] This embodiment provides a motor, the motor is connected to a controller, the controller includes a processor and a memory, the memory is used to store a computer program, and the computer program implements Embodiment 1 when called by the processor A method for controlling motor noise.

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Abstract

The invention provides a motor noise control method, a computer readable storage medium and a motor, and the method comprises the following steps: obtaining a current operation curve, real-time operation power P and operation rotating speed N of the motor; comparing the current operation curve with a preset current operation curve; and when the difference value between the current operation curveand the preset current operation curve exceeds a preset difference value, controling the motor by adopting different operation carriers according to the operation rotating speed N and the real-time operation power P of the motor. The operating state of the motor can be judged according to the current operation curve, the real-time operation power and the operation rotating speed of the motor, theoperation current harmonic of the motor is analyzed, the motor is controlled by adopting different operation carriers, and the current harmonic in the operation process is improved, so that the electromagnetic noise of the motor is improved.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a method for controlling motor noise, a computer-readable storage medium and a motor. Background technique [0002] Due to the advantages of high efficiency, large starting torque, and convenient control, brushless DC motors are more and more widely used in various industries, such as air conditioners, air purifiers and other home appliances. Household appliances put forward higher requirements on the performance, noise and cost of brushless DC motors. [0003] There are many reasons for the noise of brushless DC motors. Human operation, long-term operation of motor equipment, prone to failure, or friction caused by deformation of internal components of the motor may cause noise. Motor noise is mainly electromagnetic noise and mechanical noise. [0004] Electromagnetic noise comes from electromagnetic vibration, which is excited by the electromagnetic force wave generated by the ...

Claims

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Application Information

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IPC IPC(8): H02P23/14H02P23/00
CPCH02P23/14H02P23/0077Y02T10/72
Inventor 全威肖义杰李季李玮恒
Owner GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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