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Motor resonance noise processing method and device

A processing method and processing device technology, which is applied in the direction of electromechanical devices, manufacturing motor generators, electrical components, etc., can solve problems that affect the sound quality and user experience, so as to improve the sound quality of the whole machine, reduce resonance noise, and improve user experience Effect

Active Publication Date: 2018-09-28
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of noise exists when the motor is energized, especially in the case of low wind operation, the resonant magnetic sound of the motor is particularly prominent, which seriously affects the sound quality and user experience

Method used

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  • Motor resonance noise processing method and device
  • Motor resonance noise processing method and device
  • Motor resonance noise processing method and device

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Embodiment Construction

[0026] This embodiment firstly provides a processing method for motor resonant noise, which can reduce the resonant noise of the motor by flattening the current waveform of the motor, effectively improve the overall sound quality of the motor, and enhance user experience. figure 1 is a schematic diagram of a method for processing motor resonance noise according to an embodiment of the present invention, and the method for processing motor resonance noise can perform the following steps:

[0027] Step S102, detecting the current waveform of the motor, and determining the peak value of the current frequency wave of the motor according to the current waveform;

[0028] Step S104, judging whether the current frequency peak value is greater than the first preset peak value, if yes, execute step S106, if not, return to execute step S102;

[0029] Step S106, injecting a carrier frequency signal into the voltage input terminal of the motor to reduce the peak value of the current frequ...

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Abstract

The invention provides a motor resonance noise processing method and device. The motor resonance noise processing method includes the following steps that: the current waveform of a motor is detected;the current frequency peak value of the motor is determined according to the current waveform; whether the current frequency peak value is greater than a first preset wave peak value is judged; and if the current frequency peak value is greater than the first preset wave peak value, carrier frequency signals are injected to the voltage input end of the motor, so that the current frequency peak value can be reduced, and therefore, the resonance noises of the motor can be decreased. According to the motor resonance noise processing method and device provided by the technical schemes of the invention, the current waveform of the motor is smoothed, and therefore, the whole unit sound quality of the motor can be effectively improved, the target wave peak value of the carrier frequency signalsis accurately determined, and the current frequency peak value obtained after the carrier frequency signals are injected can satisfy requirements.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a method and device for processing resonant noise of motors. Background technique [0002] With the development of society and the continuous improvement of people's living standards, air conditioners have become one of the indispensable electrical equipment in people's daily life. Air conditioners can help people reach an adaptable temperature when the ambient temperature is too high or too low. [0003] The fan of the air conditioner can realize ventilation and ventilation, and can play a role in cooling when the air conditioner is cooling. As an important part of the fan, the motor can drive the fan to work. When the fan is equipped with a DC motor, the DC motor rotates to drive the fan impeller to rotate by inputting DC power, thereby realizing the process of converting electrical energy into mechanical energy. [0004] At present, during the operation of the DC motor of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/00H02K5/24
CPCH02K5/24H02K11/20H02K15/00
Inventor 吕静静王鹏臣张飞王永涛
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD