3ph Multi RS system, peak power with 4th Multi RS and 1<>3 phase transformer

Q&A and troubleshooting
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1

Hi all,

One bold idea;

Can I use a 4th Multi RS solar combined with a 1<>3 phase bi-directional transformer to generate peak charger/inverter power on top of my 3 phase Multi RS system?

Maybe set in stand alone mode, and have a node-red flow following the average power of the other 3 Multi RS inverters.

Thanks.

JouleTech NL

2

A single to three phase transformer is not possible. You would need a rotary or static phase converter.

3

Thanks. I realize now it’s a stupid idea. The required hardware is to costly, and I am not sure I will manage.

New (stupid) idea is to apply a 3rd party inverter for the same purpose. Looking at Deye it will be hard to have in controlled externally.

Any suggestions?

4

Hmmmm… looks like @Daanos15 asked this same thing a year ago… https://community.victronenergy.com/t/transformer-3-phase-1-phase-bidirectional/28021

5

Yes, have. Thanks for reminding.

Once again about the bidirectional transformer. I have one quotation for such device and my brother (more specialist then me) tells me it works.

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Yes, it is, but it must be connected to 3-phase on the primary side. The other way around is not possible. So, converting 1-phase to 3-phase from the grid doesn’t work. But connected that way, it is definitely bidirectional.

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