Brushless motor generator?

Discussion in 'General Electronics Chat' started by Razor Concepts, Aug 23, 2009.

  1. Razor Concepts

    Thread Starter Senior Member

    Oct 7, 2008
    Is it easy to use a brushless motor such as this one:
    as a generator? There are no sensors or anything besides the 3 main power wires. I want to know how to create a circuit that will convert the voltage to a normal DC voltage. Thanks!
  2. THE_RB

    AAC Fanatic!

    Feb 11, 2008
    Yes it will work, you use 6 diodes connected as a "3 phase rectifier bridge". The bearings and windings on this type of motor are not meant for continuous use, they are meant for intermittant use of a couple minutes in RC planes.

    It won't generate a very high voltage, you are probably better off with an old stepper motor that will make more voltage at lower revs and have much better bearings etc.
  3. Razor Concepts

    Thread Starter Senior Member

    Oct 7, 2008
    Thanks for the info. I will look into stepper motors.

    Also, about the RC brushless motors, say that motor is a 1000kv motor. At one volt, the RPMs would be 1000kv x 1v = 1000rpm. But does it work the other way around? If it is spinning at 1000kv, will it generate about 1v AC? Thanks!
  4. russ_hensel

    Distinguished Member

    Jan 11, 2009
    Yes, more or less.