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Hi folks,
I have been searching and reading about variable frequency drives (VFDs) for AC motors. Now I get the principles, I think, but I am wondering if there is something as simple as a VFD that you can just plug a bench grinder or belt grinder's plug into to operate it. Or does a VFD have to be wired directly to the motor?
Lots of info here; Variable-frequency drive - Wikipedia, the free encyclopedia
As simply put as possible...
Running a non-variable motor with a variable switch will burn it up... The motor is a costly option the switch is near nothing, if the motor were variable the factory would be putting the switch on and advertising it...
Now finding a variable speed motor in the wild and making a grinder is a different story...