Thanks for all the links ION,some good stuff in there.I actualy have a 40 amp,3 phase controller from an RC car-wonder if that will work?. Rated at 40 amp's 7.2 volt's. But i know they add extra cells to the battery pack's,as my son has many of these RC car's. I would much rather make my own though,for a 12 - 24 volt system.
The three phase RC controller can be a pre-driver to some external high power FET's or IGBT's or BJT's. I would not risk using it directly as RC motors are pretty small and you may quickly exceed the 40 amp rating. If you have a schematic, application notes or wiring diagram of the RC controller it will help us to come up with a suitable booster drive (and protection) arrangement. This could be a good way to go as all of the PWM and phase control circuitry is already in the unit. Need to know if the controller output is single ended or bridged configuration. A typical drive motor schematic would help. You also need to find out if your alternator is wired delta, wye or wye with center leg connection and which configurations the controller is designed to drive. An electric bike or electric auto motor controller might be a better choice. There are numerous papers on the web for this. Note: While all of this stuff is fun to play with, I highly recommend getting way up the curve by studying the latest advances in motor speed control and motor design especially if you want to go where no man has yet gone. It's all out there.
« Last Edit: 2013-09-16, 19:02:44 by ION »
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