Submitted by VolkerP on February 18, 2011
what can TESLA do to enable charging their EVs from solar photovoltaics? I have a special DC circuitry in mind: running 300-500V DC from my PV array directly to the charge port.
The EV on board charge controller then must perform a MPP tracking (=maximum power point) and it must adjust to rapidly changing currents when cloud cover shadows the PV array.
Will the improved overall efficiency pay off the extra hardware?
Second thought, after some years I will have a "worn out" ESS with remaining 25kWh of its initial 53kWh capacity, but far to valuable to discard. I want to use it in my home to buffer electricity demand. Similar requirements here are: do a DC/DC charging with MPP tracking. Feed the surplus energy into the grid via DC/AC inverter. Have an advanced switching unit that runs my home from the ESS if the grid blacks out. And, of course, install a thermal management system for the ESS similar to that in the EV. What do you think, will that pay off?