Phoenix Inverter out connected with Multiplus-II AC out

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blackstar asked May 29, '22

Phoenix Inverter out connected with Multiplus-II AC out

I'm studying a configuration to integrate wind turbine generator with photovoltaic without problems.

The idea is to have wind turbine system to load its own battery system (that is not very large but enough to work as a buffer) and then have that batteries to feed the AC loads with an inverter.

Photovoltaic and wind generators works independently with their independent batteries but the multiplus-II should merge the outputs and eventually use the phoenix out to load photovoltaic batteries. All managed by Cerbo GX

It is not a real parallel connection because phoenix and multiplus feed the same loads but use different DC inputs.

Any experience with that kind of configuration? Possible problems?

Kind Regards,

Danilo

Multiplus-II Phoenix Inverter VE.Bus

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Mike Dorsett answered · May 29, 2022 at 06:02 PM

main problem here is that both inverters are "Grid forming" and as such, you can't connect the AC outputs in parallel. for the wind generator you need an inverter similar to the pv grid connect inverters - but modified to cope with a wind generator. (The input needs to be shorted when the output is not required).

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blackstar commented · May 29, 2022 at 06:10 PM

Any idea of a grid connected system that can "talk" with Cerbo GX? (at least to simplify management)?

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Answer 1 · 2022-05-29T18:04:49Z

Matthias Lange - DE answered · May 29, 2022 at 06:04 PM

That will not work because the outputs can't be synchronized.

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