Brushless generator advantages?

Advantages of brushless generator:
1, brushless generator running sound is small
This will be the direction in which our civilized society is bound to move. In addition, it is required to reduce noise to protect our sound environment.
2. Brushless generator has no spark
You can use it in some places where it’s flammable.
3, long life
Because it uses controller instead of commutator and carbon brush is brush motor several times or even ten times. There’s a limit to the life of a carbon brush like a thousand hours before the carbon brush wears out and you have to replace the brush with a brushless motor.
4, high speed
You can do it much faster without the actual contact velocity because of the magnetic field induction.