Quote:
Originally Posted by rusty959
First of all, 60 farads will lose over 3V each second with the power levels we are looking at.
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Actually no .. since it will be in parallel to the battery , its voltage will not drop a whole lot more than the battery ... as immediately charges itself from the battery. Those combo will not discharge quicker than the battery alone. The cap only increases the systems ability to provide high spikes in current demand ... which the 1.5 pack shows is a bottleneck for the Pb-Acid batteries for this scenario.
Quote:
Originally Posted by rusty959
Furthermore, car audio caps usually have a max voltage of 18-20 volts, so you would only be able to use a single battery (12v) battery with that cap, else put them in series which halves the capacitance. So it would take 4 of those caps to get 30 farads on a 24v setup. 60F would need 8. Therein lies the big issue with running high voltages with caps.
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We can find some caps that surge at 30V. Even if we have to put 2 caps in series ... the capacitance halves but energy storage doubles ... given twice the voltage ... we do not have to go huge on caps in the first go around ... I think 2x of the most compact caps with 10+ F in parallel should do the trick ... again .. not for primary energy delivery but to ease the most extreme loads on the battery pack. What implication will it have on the motor controller ... I am not sure ...