Lee Hart wrote:
As for using a motor controller as a battery charger: That is a much trickier proposition. A battery has very low resistance, and can deliver awesome peak currents! Few motor controllers are going to like powering a battery directly. To do it, they would need a substantial output inductor. The GE EV-1 happens to have such an inductor; but many controllers won't!
David Nelson wrote:
That is why the Synkromotive controller needs the motor in the loop for it to be used as a battery charger then.
For a DC setut, you can use the motor's series field winding as the output inductor for a battery charger. Don't power the armature though, or the motor will run!
I first saw this done on Bob McKee's "Sundancer" EVs, back in the 1970's. The controller and charger were one and the same!
-- Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius, and a lot of courage, to move in the opposite direction. -- Albert Einstein -- Lee Hart's EV projects are at http://www.sunrise-ev.com/LeesEVs.htm _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
