Is Your Electric Motor Making Noises? See Here WHY

Electric motors help you run your industrial plant efficiently and profitably. Productivity can be severely reduced if it is not performing at its best. If you notice strange noises coming from your electric motor, this is a sign that something is wrong. 

The next time you hear strange noises coming from your electric motor, reach out to an electric repair company that offers electric repair. If you need electrical motor maintenance, you can rely on a team of professionals. Here's some more information on the common causes of electric motor noise that's not explained.

 

Types of Noises in Electric Motor

There are several strange noises you hear in your electric motor when there is any issue with your motor. Here are a few of them:

Mechanical Noise

Mechanical sounds from your electric motor are very common causes of strange noises. Bearings can fail, the stator core can loosen, or the electric motor will create airborne noise due to a structural problem.

Windage Noise

Electric motors produce most of their unexplained sounds from windage noise. Motors with two or four poles, such as those with high speed, are particularly prone to it. Objects close to the motor's rotating part cause this noise.

Magnetic Noise

Mechanical forces within a motor may cause the noise to be magnetic. As a result of magnetized parts exerting pressure on each other.

A motor may develop magnetic noises for various reasons, including an uneven air gap, slip noises, and skewing noises when it has an unequal air gap. 

As a general rule, magnetic noise, especially in the two and four-pole varieties of mechanical motors, is the common cause of unexplained/strange noises generated by those motors. 

Electric motors with six poles or more are often the most affected by this problem because it is the most common cause.

How to reduce noise from electric motors 

To eliminate the noise, you can follow a few steps. The first is with extra components, while the second is with design practices.

To reduce motor noise, use capacitors with the motor terminals

A ceramic capacitor will often be present between the two terminals of small motors, and the capacitor suppresses noise. Compared with LC/Line filters, this method isn't as effective. The motor can, however, be used for small motors like toys.

Disconnect the control circuit from the motor diving

The motor driving circuit is kept isolated from the control circuit in the industrial sector. The communication between the controller and the driver is achieved using an optoisolator. Unfortunately, that method is expensive and only applicable to industrial-grade devices.

Shortening motor lines

To reduce the possibility of the trace/line acting as an antenna, motor leads and PCB traces should be kept short. As a result, there will be less noise surrounding it. To reduce the antenna effect, you may need to use vias or decoupling capacitors with traces at corners.

Conclusion

At Best Repair Company, we are prepared to provide you with an in-depth consultation about your needs. We provide exceptional customer service for electric motor repair at our electric motor repair company, so contact us today to learn more. 

Let us help you make a difference with your vital electric motors. To Know more contact us now: