I have implemented a boost converter (120V to 400V). I was testing it by driving a single phase induction motor. When the boost output voltage increased to 200 volts that time you run the motor through VFD. Then I can hear audible nose in the inductor. The motor is drawing current normaly.
I feel it is very dangerous when there is audible noise in the inductor. The noise increased while I was changing the speed of the motor.
Can you tell me why this noise is happening and how I can remove it? Is that noise dangerous for my circuit?
Schamatic of Converter