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coreyfro
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10.28.2008, 05:47 PM

So at, say, 50% breaking, efficiency of regeneration is lessened?

Meaning 20% breaking is within the "optimal range" what ever that percentage of regeneration is. I don't need high efficiency here. I just need simplicity.

I want the control loop to be simple (adjust numbers as needed):
If voltage > 12, run at 0% parasitic drag break.
If 12 > voltage > 11.5 , run at 10% parasitic drag break.
If voltage < 11.5 , run at 20% parasitic drag break.
The idea is to float around 3ah out of 4ah of charge capacity in the battery giving me enough of a buffer before I over charge if I use the MMM as the breaking mechanisms instead of relying (completely) on mechanical breaking.

Think the MMM can run for 20 hours straight, at 12 volts, doing next to nothing? ;-)

Quote:
Originally Posted by Pdelcast View Post
The braking is regenerative because it has to be -- can't dump that much energy anywhere but back into the battery. (The battery is used as a load, but using a battery as a load mean charging the battery...)

It is not, however, optimized.

Still gets fairly good efficiency up to about 35% braking power -- above that the conversion efficiency gets lower.
   
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