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:[email protected]>
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:[email protected]>
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:[email protected]>
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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