Why is there a humming sound when a motor is equipped with an inverter for speed control?

2009-04-07View Original

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Why is there a humming sound when a motor is equipped with an inverter for speed control?

Reply #22009-04-07

Normal; it’s an electromagnetic sound. If it’s not a variable-speed motor, pay attention to the motor’s temperature

Reply #32009-04-08

A common phenomenon. I can’t explain it specifically. The original poster had better search for it themselves. Feel free to share the results further; P

Reply #42009-04-08

Electromagnetic sound is present in virtually all motors that use frequency conversion.

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