If you don't generate an answer here, you can try one of the EV car sites. A million years ago they were using the starter/generators (up to 96 volts I think) in small car conversions with great success... they were the only game in town. Cheers, Jeff
On Jan 21, 2008 8:44 AM, David Herron <[EMAIL PROTECTED]> wrote: > > http://www.kellycontroller.com/mot/Brushed-Motor-Speed_Controller.html > > > Seth A. Keel wrote: > > > > Hey all, > > > > So I got a cheap shunt wound motor recently. It's a military spec > > starter/generator. The guy said the field coils can only take 24v > > max, but didn't give me a current limit. The motor supposedly can > > handle 96v and a lot of current. 18HP continuous at 72V The > > nameplate is missing, so that's about all the info I have and I don't > > know how accurate it is. > > > > I have a little PWM controller for motor testing, but how should I > > excite the field windings? Just hook up a 12v battery directly? > > There is 2.4 ohm resistance, so I'm expecting it will draw 5-6 amps. > > I just want to double check before I fry the motor by hooking up the > > battery. > > > > > > Also, what controllers work well for separately excited motors? > > Here's the short list of controllers I'm considering: > > > > Sevcon Powerpak SEM (version 3) > > http://www.sevcon.com/pages/powerpakSEM.html > > > > Zapi Sem 3 > > http://www.electrofit-zapi.com/hfcontsepex.htm > > > > Any other suggestions? Thanks, > > > > Seth > > > > > > > >
