[matmaxgeds]

Hi,

Is it possible to get an EVSE that is programmable down to 2 or 4 amps?

I have found this (http://evseupgrade.com/?main_page=product_info&cPath=1&products_id=25) which goes down to 6 amps, but I would like to try even lower.

Thanks for any input,

Matt

 

[matmaxgeds]

Thanks a lot,

Based on that I did some googling of the handshaking and found: "After a connection is made, the EVSE provides the vehicle with information about its maximum available continuous current capacity by modulating the pulse width of the square wave between 100 and 800 μs. The relation is linear: 100 μs corresponds to 6 A; 800 μs corresponds to 48 A."

http://www.electronicdesign.com/pow...-european-standards-electric-vehicle-charging

I guess this explains why a handshake for 4amps (i.e. 66 μs) wouldn't handshake as I guess the vehicle wouldn't know how to interpret it.

Thanks,

Matt

 

[matmaxgeds]

Sorry to follow up again,

Am I therefore right in thinking that a 100 μs modulation on a 110v EVSE therefore leads to a 660w power draw?

Thanks,

Matt

 

[matmaxgeds]

Yes, it is an unusual direction,

I have 3 solar panels on the roof of my garage but no other power supply i. e. a max of 900w and am thinking of getting a hybrid (Golf GTE, and I don't drive daily), and so speculating whether with a inverter drawing from the panels and outputting 110v into an EVSE, I could keep the battery topped up for a few sunny hours a day?

I could use a buffer battery of course but was wondering if it would be possible without, as even now it wouldn't really be cost effective (but it would be mentally satisfying), but far worse if batteries, larger inverters etc need to be involved.

Matt

 

[matmaxgeds]

Hi Solarsail,

Are you aware of a charger that you let me trickle charge a Golf GTE pack via the HV connections? I think it is 96 cells at a nominal 3.6v - so would need to be outputting around 330v DC (and around 600w) with enough intelligence to disconnect when the voltage went higher? I didn't think this kind of thing existed, but maybe I am missing a trick? Could a Brusa or similar be set to run with a very low wattage?

Thanks,

Matt