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Re: automatically ajusting EVSE for off-grid/current sensing

Posted: Mon Aug 31, 2020 6:11 am
by Daklein
I wonder if the leaf onboard charger measures the grid frequency and puts it on the can bus? Ie 50 eu or 60 us hz

In my case, the off-grid inverter raises the frequency when house batteries are near full, in order to limit solar inverter production. That's the time to increase consumption by the leaf charger.

Re: automatically ajusting EVSE for off-grid/current sensing

Posted: Mon Aug 31, 2020 7:22 am
by Dala
Daklein wrote:
Mon Aug 31, 2020 6:11 am
I wonder if the leaf onboard charger measures the grid frequency and puts it on the can bus? Ie 50 eu or 60 us hz

In my case, the off-grid inverter raises the frequency when house batteries are near full, in order to limit solar inverter production. That's the time to increase consumption by the leaf charger.
Grid frequency is not measured, or atleast I haven't been able to find it. But voltage is, so it is possible to build on the functionality, and add a brownout preventer, something that drops the load incase the voltage sags.

Re: automatically ajusting EVSE for off-grid/current sensing

Posted: Wed Sep 02, 2020 7:23 am
by Oilpan4
You could build that as an add on control box. Build it around an under voltage relay and some time delays.