I am editing a table of motors.
I am looking for the correct terms to distinguish two types of motors: motors whose speed is less than the AC frequency (all inductions / squirrel cage motors) from motors whose speed is completely independent of the AC frequency (universal motors and repulsion motors).
Normally, the former is called "asynchronous" thought they are "quasi-synchronous".
What about the latter? They are too "asynchronous" but they are completely asynchronous.