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Suggestions on batteries and capacitors.
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<blockquote data-quote="hispls" data-source="post: 8662029" data-attributes="member: 614752"><p>Why headway? They're generally pretty poor even for LiFePO4, which IMO is pretty much obsolete already what with LTO technology what it is.</p><p></p><p></p><p></p><p>Here's a copypaste of a discussion I had about these with Stephen Mantz. We were discussing a nominal 9K amp so divide by 2 for the "5K" Orion</p><p><strong>Energy is C x V x V in Joules.</strong></p><p> </p><p><strong>So you are stuck with 14.4v squared = 207.36 now multiply this by some cap value.</strong></p><p> </p><p><strong>Putting 6 of the 2.7v caps in series drops you to 500F</strong></p><p> </p><p><strong>Now assuming 12kW of input power to the amplifier you require 36,000 Joules of energy.</strong></p><p> </p><p><strong>So 36,000/207.36 = 173F</strong></p><p>In short a bank of supercaps stores enough energy to power 5K amp fully for about 5 seconds and that's assuming you can get 100% charge (you can't at 14.4) and 100% discharge at useful voltage (you also can't).</p><p></p><p>Link I posted is the LTO battery thread which I planned to update today with some new stuff. I think 5KW amp is already getting beyond the size where AGMs are practical.</p></blockquote><p></p>
[QUOTE="hispls, post: 8662029, member: 614752"] Why headway? They're generally pretty poor even for LiFePO4, which IMO is pretty much obsolete already what with LTO technology what it is. Here's a copypaste of a discussion I had about these with Stephen Mantz. We were discussing a nominal 9K amp so divide by 2 for the "5K" Orion [B]Energy is C x V x V in Joules.[/B] [B]So you are stuck with 14.4v squared = 207.36 now multiply this by some cap value.[/B] [B]Putting 6 of the 2.7v caps in series drops you to 500F[/B] [B]Now assuming 12kW of input power to the amplifier you require 36,000 Joules of energy.[/B] [B]So 36,000/207.36 = 173F[/B] In short a bank of supercaps stores enough energy to power 5K amp fully for about 5 seconds and that's assuming you can get 100% charge (you can't at 14.4) and 100% discharge at useful voltage (you also can't). Link I posted is the LTO battery thread which I planned to update today with some new stuff. I think 5KW amp is already getting beyond the size where AGMs are practical. [/QUOTE]
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