Avoid "Optimizers" like the plague!
They generate horrendous radio frquency interference, blocking AM and
Shortwave and Ham raido HF communication for blocks. It cannot be fixed
without removing every panel and re-doiong all the HV wiring into twisted
pairs and having RFI chokes on every wire
Related question:
I have solar panels, but they each have a DC optimizer on them
(basically does MPPT and production level measurement on a per panel
basis, but sends DC down to the wall mounted inverter).
When the grid is down, the (Solar Edge SE 10KW) inverter shuts down, and
the DC
Peri Hartman via EV wrote:
Well, if it's current that varies, it makes sense. Maybe I
misunderstood, but your prior post says "any voltage from 0 up to...".
Bob is right; PV panels do behave somewhat like a current source. If you
look at a graph of voltage vs. current at some fixed light
e battery is up to max voltage, you need to disconnect or you will
> destroy the cells.
>
> Peri
>
> -- Original Message --
> From: "Robert Bruninga via EV"
> To: "Electric Vehicle Discussion List"
> Cc: "Robert Bruninga"
> Sent: 0
Sent: 02-Sep-19 8:31:26 AM
Subject: Re: [EVDL] V2G for my grid tied solar? (constant current
charging)
Solar cells are current sources. Their current is linear with light
level not the voltage. The voltage is between about 0.55 volts per
cell under no load, down to about 0.45 volts un
to disconnect or you will
destroy the cells.
Peri
-- Original Message --
From: "Robert Bruninga via EV"
To: "Electric Vehicle Discussion List"
Cc: "Robert Bruninga"
Sent: 02-Sep-19 7:20:27 AM
Subject: Re: [EVDL] V2G for my grid tied solar? (constant current
One final point about grid down charging (under a must have armagedon
scenario): (And only for those fully experienced in HVDC)
Remember that Solar panels are current limited power sources. This means
It will provide its rated current at ANY voltage from 0 (short circuit) up
to its nominal
