Exactly my point. Thats why i said in the first place that available energy is not the problem here.PlatinumZealot wrote:You do not need 700Amp cables. You simply use a voltage on the cable side and have a voltage converter within the power electronics. Either way, I still would not use such a high regeneration rate from the front brakes. I think getting twice of what they have now is a good start.
Twice as much can also be had from the rear axle.
As for voltage converters - generated voltage by the MGU is proportional to its rotational speed so you have to make a design decision here.
Also maximum voltage is limited by safety considerations and insulation. So that only leaves you with high current cables.
A second problem arises from P = U * I(rpm): Regenerative breaking does not work (good) down to zero speed!
Another point for consideration: One would surely not operate the MGU in its best efficiency region [1] but near its max. power region just because of saving weight. Lets say you end up with 90% eff. That would result in a 50kW (assuming 500kW) cooling requirement (for few % of lap) for the MGU!gruntguru wrote:The way to do it would be combined battery and capacitor storage. Capacitors absorb only the surplus beyond the battery's max charge rate and discharge into the battery later. Still - we are not going to see 1,600 kW MGUs, or even 700 kW for that matter.
My quick calculations where just meant to provide us with rough numbers. Im not saying it cant be done. System weight is a whole other story.
cheers Stefan
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