You sound very educated and maybe able to help me which might possibly help yourself , helping meit's nice to see a well documented project completed and working.
I have a EBIKE kit, 48v 1000w and trying to for 1 thing to extend my range and the speed I traveled as sure ya know, the faster ya go, the shorter distance able to reach.
I recently learned of and bought a 48v DC PMA ( permanent magnet alternator ) and dreamed how wonderful it could be...
At 1st was dreaming of running my bike off the PMA w no batteries.
Then woke up a bit and determined that if could just keep my batt.s charged better , enabling greater range and better speeds I would be so happy...
I am now seeing it's not so easy !
So to not overcharge my batt.s , I got a charge controller and relay that are set to 55v low and 57.6v high.
I just got batt.s fully charged and I tested this morning going about 17 mph only to find I wasn't able to get as far as usual !
So charged batt s again and un hooked the controller & relay running PMA directly to batt.s .....as while riding I watched my voltage meter and noticed I didn't go fast enough to produce but about 48 - 50 volts ...so trying to do better I only went about 12 mph on way back,. Did make it home and still had some power left...
Not sure if ya know of these pma yet, I sure hope so..
I was wondering of relay wiring, passive or active, rather running the hot or neg. From pma to the relay,
My pma is a super core DC 2 terminal unit at 1800 amps max. And when used and has a load, the pma becomes harder to turn.
So, I am guessing my 1000w bike uses more power than can be made going the speeds I'm able to travel. Guessing.
If you have any suggestions or referrals I'm so greatful !
And today I thought of a diff. Way that may work better.
Instead of trying to reach power needed to charge my batt s with the pma,
Why not only worry of producing 12 strong volts, hook up a 12v inverter and run the household charger used each day..?
Guessing that prob. Won't work for reasons not considered...?
Again I Thank You !