Re:New two-stroke engine design could help keep internal com...
by jaclaz on Tuesday May 26, 2020 @12:52PM
(#23313440)
>I don't know if it'll require upgrades to the power grid. You've already got 240v in Europe, so that's only ~10 hours to charge a Tesla. But could it handle thousands of EVs charging simultaneously?
Rest assured it will, and not only on the power grid.
Back of the envelope calculation.
A modern lamp post (one every 30 mt or so) is (led based) 60-80-100W, if infrastructure (cables) are not so recent, previous generation of street lightning were 150-250W per post.
Cables are dimensioned accurately to carry that kind of current/power.
A charging every 30 mt needs to serve 6-7 cars, we are talking of 7-10KW, i.e. 7000-10000 W, something like 40 times the power the infrastructure was designed for.
And each 300 mt stretch of street will need something in the order of magnitude of 70-100KW, and since all cars will be charged at night, there are very little to be spared for non-contemporaneus power usage.
Rest assured it will, and not only on the power grid.
Back of the envelope calculation.
A modern lamp post (one every 30 mt or so) is (led based) 60-80-100W, if infrastructure (cables) are not so recent, previous generation of street lightning were 150-250W per post.
Cables are dimensioned accurately to carry that kind of current/power.
A charging every 30 mt needs to serve 6-7 cars, we are talking of 7-10KW, i.e. 7000-10000 W, something like 40 times the power the infrastructure was designed for.
And each 300 mt stretch of street will need something in the order of magnitude of 70-100KW, and since all cars will be charged at night, there are very little to be spared for non-contemporaneus power usage.