Hi Kirk, I have not done this personally, and this does not pertain to your specific situation, but related to this subject is the Sol-Ark 15k has a massive AC coupling capability even with maximum DC connected PV. I really like this idea for people that want a huge PV array but only need the continuous AC output of a single inverter. You lose some redundancy compared to dual inverters, but this could be a cost effective strategy. Mixing DC and AC coupling does have its advantages.
Jason Szumlanski On Sat, Jul 30, 2022 at 12:31 PM Kirk Herander via RE-wrenches < [email protected]> wrote: > All, > Anyone out there successfully AC-coupled inverters in an off-grid system? > Advantages vs. pitfalls? > > In my case I'm thinking of its practicality with a Solaredge inverter > AC-coupled to an OB Radian inverter. OB firmware makes this pretty easy > now. So effectively the Radian is always operating in a grid-backup mode. > > I already upgraded the system to the Radian, and soon to add 5kw of > pole-mounted PV(currently only 1.8kw of 22-year old PV on the roof). This > system also just got 16kwh of Blue Ion LFP batteries. > > This is a last-minute thought I have instead of investing in additional DC > charge controllers for the new array. > Cost-wise there's not much of a difference between several high-quality > charge controllers and a smaller SE inverter w/optimisers. Thanks. > > -- > > *Kirk Herander / **[email protected] <[email protected]>* > > *Owner|Principal, VT Solar, LLC* > > *Celebrating our 31st Anniversary 1991-2022!!* > > *www.vermont.solar* > <https://mailtrack.io/trace/link/7e4446d7a929a0c26f1966b8fc70ff1da40cb7fb?url=https%3A%2F%2Fnam02.safelinks.protection.outlook.com%2F%3Furl%3Dwww.vermontsolarnow.com%26data%3D02%257C01%257C%257C9f0330d75a244870112408d685311841%257C84df9e7fe9f640afb435aaaaaaaaaaaa%257C1%257C0%257C636842843233477645%26sdata%3D0NjyuKeQbEK6245SNnk8X4XnP9Q%252B%252BqtvcALkdDghvk4%253D%26reserved%3D0&userId=1613865&signature=a65755a57ba4ce52> > > dba Vermont Solar Engineering > > 802.863.1202 > _______________________________________________ > List sponsored by Redwood Alliance > > >
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