I came across this patent from Tesla, as discussed by Electrek:
https://electrek.co/2017/03/31/tesla-pa ... e-station/
There is a link to the patent document, but only downloadable through Scribid (another means to make a buck out of the internet).
Anyway, what caught my attention was this:
Are they suggesting that a +400 V DC and a -400 V DC bus be created? What is the advantage to this? As far as I can tell, there are 16 lots of 48 V - perhaps half of them are in series to create one potential, and the other half to create the opposite? Rather confusing.