AC controllers

From EvTechWiki

AC Controllers (aka inverters) are motor controllers designed specifically for controlling AC motors. Because this is a EV-oriented site, we will focus most on induction controllers, although it may be that other types of AC motor could be used successfully in electric vehicles.

Also worth mentioning are BLDC drives, which resemble AC drives in that the controller must provide a properly inverted signal to the motor or the motor will not spin - the input to a BLDC motor is a AC signal that is timed to corrispond with the shaft speed and position of the motor. Actually, I have no idea why they consider these DC motors.

BLDC motors are considered DC because the are an inside out DC motor. In a Brushed DC motor the spinning rotor causes the voltage to become AC (as the brush come in contact with different winding pads). This AC creates the magnetic fields in the rotor. Then that magnetic feild reacts with the magnets in the case. In the BLDC motor the stator windings are stationary so the input must be AC to get the magnetic field to rotate - which causes the rotor to spin. I don't think there is any such thing as a truely DC motor. Please correct me if I am wrong.