I am trying to convert a wind generator to a brushless motor.
As you can see at the image, it has 16 magnets and 12 coils. The coils are connected as 3 phase, star connection, so I have 3 output wires to play with. The fourth which is the common connection is buried in epoxy and its unreachable.
I already tryed a BLDC Three-Phase Sensorless Brushless Motor Speed Controller, but it doesn't run smoothly, it makes a vibrating noise, like its not synchronized and it feels like it brakes its self. So the speed is ridiculously slow (like 60 rpm at 12v).
Is there any circuit to run it properly as a brushless motor? Thanks!