[RE-wrenches] Chilicon Microinverters AC Coupled with Generators

[Jeff Clearwater]

As Jay says SMA has the Fuel Save Controller for large PV to Diesel 
hybrid systems - with or without batteries.

https://www.sma.de/en/industrial-systems/fuel-save-solution-for-hybrid-systems.html

So no reason it can't be done on a smaller scale.

Best,

Jeff
Village Power Design

> Jason Szumlanski <mailto:jason at floridasolardesigngroup.com>
> June 1, 2021 at 3:51 AM
> I'm wondering why this isn't more common and better documented. We are 
> getting a lot of requests for solar to reduce generator fuel usage 
> with PV in smaller residential settings.
>
> I just came across this solution from Fronius: 
> https://www.fronius.com/en/solar-energy/installers-partners/products-solutions/offgrid-backup/pv-genset-saving-fuels-with-photovoltaics. 
> <https://mailtrack.io/trace/link/7c491c267a60aecbda5c36da8e23e64a94576133?url=https%3A%2F%2Fwww.fronius.com%2Fen%2Fsolar-energy%2Finstallers-partners%2Fproducts-solutions%2Foffgrid-backup%2Fpv-genset-saving-fuels-with-photovoltaics.&userId=1613865&signature=86c145b44a7c38ec>
>
> Jason Szumlanski
> Florida Solar Design Group
> *
>
>
> *
>
>
>
>
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> Jay <mailto:jay.peltz at gmail.com>
> May 25, 2021 at 4:16 PM
> Installing PV/inverters to a generator is a common practice.
> One must make sure you don’t ever have more PV/inverter than load to 
> prevent either generator damage or shut down.
>
> I worked on a big project that did actually shut the generator down, 
> it tried to run backwards as the PV power exceeded the load. Didn’t 
> damage the generator, 125kw.
>
> The main reason is to reduce fuel burn, but how how it is reduced has 
> a number of variables:  age, fuel type, size, where in the power band 
> it’s operating , and if a larger newer diesel ( they have a very 
> different fuel burn curve than older ones are which works very well 
> with solar).
>
> SMA and others have full packages that communicate with the generator 
> for really large systems like mines etc.
>
> Not knowing the size/type of the PV/generator and the variables, hard 
> to say if there would be much fuel savings.
>
> Jay
>
>
>
>
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> Jerry Shafer <mailto:jerrysgarage01 at gmail.com>
> May 25, 2021 at 9:28 AM
> Not kidding, but not in reference of wildfires either. Installing 
> inverters directly connected to the gennys is in the past lead to smoke.
> Jerry
>
>
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