|Jan 14, 2015, 10:53 PM|
Joined Jan 2007
How our Brushless motors work
There might be a bit of interest in just what is happening under the "Hood" of our Electronic Speed Controls (ESC's) that drive our three wire, three phase type motors. As far as those three wire motors go, hooking them up to an appropriate low voltage three phase power supply, they will spin over just fine, just at very low RPM. Yeah, before retiring at work, I've done it with the variable voltage three phase stuff we had to work with.
The Microchip website has a pretty good description on what is going on, covering the actual three phase signal itself, to what is going on while the ESC is sensing the motor rotor position while providing the driving signal to the motor.
Take a look:
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