You're right, it's technically AC. The term 'Brushless DC' is actually more like a marketing term. These 3-phase permanent magnet motors, together with their motor driver circuits (ESCs) were first marketed and popularized in the industry as a replacement for DC motors. The motors that inspired this whole video, the ones I'm specifically talking about here are 'Brushless Outrunners'. They're used in drones and RC planes everywhere, and use the 12s/14p config all the time.
I give up, how can this be a dc motor if it is powered by 3-phase ac?
You're right, it's technically AC. The term 'Brushless DC' is actually more like a marketing term. These 3-phase permanent magnet motors, together with their motor driver circuits (ESCs) were first marketed and popularized in the industry as a replacement for DC motors.
The motors that inspired this whole video, the ones I'm specifically talking about here are 'Brushless Outrunners'. They're used in drones and RC planes everywhere, and use the 12s/14p config all the time.