DIYrich
Solar Wizard
No, but it may have a bearing on the solution. Micros may push it over 3.6kw, so charge controller may be better.That doesn't resolve the small south string issue.
No, but it may have a bearing on the solution. Micros may push it over 3.6kw, so charge controller may be better.That doesn't resolve the small south string issue.
This is the issue they are trying to solve:Micros may push it over 3.6kw, so charge controller may be better.
Setting an inverter's export limiter (if required) is trivial. It will account for any extra generation from any additional small inverter.The main problem I have is that I can only fit 3x relatively small panels to my south facing roof. The only panels I can find that will fit are the Perlight Delta 295w. In contrast I can and plan to fit 10x Jinko Tiger Neo 430w panels to my west facing roof.
The Sunsynk works exactly the same. I have a 3.6 Aurora Power One inverter installed under FIT and a Sunsynk ECCO 5kw. I use the microgenerator setting on the Sunsynk to harvest any excess from the FIT PV system.The UK-approved Solis Hybrid inverters (like S5-EH1P) will charge batteries from a secondary microgenerator (in my case, a second Solis). So, if the PV only inverter (whatever make) is producing more power than the house load, then the surplus will be used by the hybrid Solis to charge its batteries, simultaneously with it's own PV production. Not sure if this is common to most hybrids or whether the Sunsynk supports that mode of operation, but it works with the Solis.
The UK-approved Solis Hybrid inverters (like S5-EH1P) will charge batteries from a secondary microgenerator (in my case, a second Solis). So, if the PV only inverter (whatever make) is producing more power than the house load, then the surplus will be used by the hybrid Solis to charge its batteries, simultaneously with it's own PV production. Not sure if this is common to most hybrids or whether the Sunsynk supports that mode of operation, but it works with the Solis.
We had a separate thread on that a month or two ago. I'd be wary of just connecting two inverters, particularly two different makes, to the same battery connection unless you know that the battery connection is truly floating. My Solis hybrids have a voltage of nearly -200V with respect to ground on their battery negative lead!
Even it it were possible, there would be issues, IMHO, with battery to inverter comms. Without a MITM controller the battery would instruct both inverters to charge or discharge at a given current, which would then effectively be doubled if you have two inverters trying to achieve that charge or discharge rate. Far simpler to use AC coupling.
In your situation, I'd prefer to use a small string inverter, like the small Solis you mentioned, for your 3 panel array, rather than micro-inverters.
The Sunsynk works exactly the same. I have a 3.6 Aurora Power One inverter installed under FIT and a Sunsynk ECCO 5kw. I use the microgenerator setting on the Sunsynk to harvest any excess from the FIT PV system.
However, when I fit my second battery, I may just sell any PV production back to my supplier as I can buy and store electricity at half the price I can sell back at. The additional battery will give me enough capacity to supply my needs 24/7. At the moment I get a deemed export of 50% of what I produce at a third of the price I could get if I sold my actual export or even better ALL the power I produce. From the calculations I have done, I could 'earn' an additional £450 per year!
As long as one charger takes control over the others then not an issue.I must admit that I really don’t like the idea of connecting multiple chargers to a battery.
It's quite difficult to find the information on how to set it up, I will try to find the relevant you tube video where the found it. Or you could ask Sunsynk prior to selecting it OR I could copy you my settings ?
OP is not getting a battery, at least not yet.WOuld not (2) MPPT charge controllers be your best solution?