[ausev] Potential Regenerative Charging for DC Applications

[m. edmund howse]

Hey,

One of the problems with an ICE alternator is that the average one only 
provides roughly 50 to 100 amps depending on it's duty another is that 
you have to have a voltage to excite it with. Typically a 12 volt 
battery. A better method in my opinion is a DC motor you can get on 
e-bay for under two hundred dollars that will give you 200-300 amps at 
an appropriate rpm. and maybe at the voltage you need whereas an 
alternator after rectification only gives you 12 volts unless you modify 
diodes and controllers.

marv




Wieser Scott wrote:

>I would like some feedback on the following way to obtain regenerative
>charging in a DC application.  Google has yet to be helpful on this...
>
>I would like to use an ICE alternator to charge my battery pack.  I
>suggest using the NC switch on my throttle potentiometer to switch an
>alternator charging circuit on.  The sequence of operation would be when
>the driver completely lifts their foot off the throttle, (there is a
>"dead-band" prior to this point which allows for coasting), the
>alternator circuit would close and produce power to charge the battery
>pack.  Conversely, when the driver pressed down on the throttle, the
>alternator circuit would open and not impede acceleration. 
>
>Currently my EV's front motor shaft drives the air conditioning
>compressor.  With a double-pulley, that shaft could drive the
>alternator.  I would like someone with electronic design expertise to
>please help me work out this electrical circuit; primary for the voltage
>step up to the 120V pack voltage and to ensure protection of the other
>devices this circuit or to explain why this would not work.
>
>What do y'all think? 
>
>Scott
>
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