The motor manufacturer reminds that in the process of using high-power variable frequency motors, vibration and noise are two completely different parameters. Generally, the production technology conditions of the variable frequency motor product manufacturers define the limits of the two parameters. To pass, all the manufacturers of the frequency conversion motor need to spend a lot of energy to deal with it.

　　However, in many environments, the noise and vibration of high-power variable frequency motors often appear at the same time.The reason is that the two are closely related and affect each other.

　　Enterprises can clarify from the sound of the high-power variable frequency motor that the sound originates from vibration. When there is no vibration, the electrical timing is very stable and quiet; from the human perception of vibration and noise, it is clarified that vibration is sensed by touch, that is Humans can feel the generation of displacement, and the sound, including the noise of the motor, is felt by human hearing.Sounds that sound pleasing to the ear are called music, and sounds that make people impatient and uncomfortable are called noise.

　　The back and forth displacement generated by the vibration of the high-power variable frequency motor will cause the motor shaft or the equipment components to be dragged to deform and fatigue damage, which directly affects the operation accuracy and service life of the equipment and the motor; and the noise of the motor will affect people. Ensure that the conditions cause adverse effects or pollution.

　　In order to find the source of noise and vibration, it is necessary to identify the classification of machine noise, ventilation noise or electromagnetic noise based on past history.Electromagnetic noise is caused by electromagnetic vibration. Machine noise is mostly caused by the dimensional accuracy of layout parts, the mutual accuracy of each other, and the balance accuracy of rotating parts. Ventilation noise is caused by unfair wind paths, sudden increase or decrease of local wind resistance, or wind interception. The area is too small and the wind speed is too high.

　　Dealing with noise problems, in most environments, comes down to handling vibration problems, involving design level, process level, manufacturing level, and installation and utilization links. It is a systematic project.