I am editing a [table of motors](http://liionbms.com/php/motors.php).

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.