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Forum Index : Electronics : Micro Inverter Build.

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Phil23
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Joined: 27/03/2016
Location: Australia
Posts: 1667

Posted: 01:01pm 03 Jan 2017

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Have read many of the build threads.

Has anyone considered micro inverters?
Are the feasible?

Pros, Cons, build difficulties & limitations would be interesting to hear.

Phil.

Grogster

Admin Group

Joined: 31/12/2012
Location: New Zealand
Posts: 9594

Posted: 01:11pm 03 Jan 2017

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Depends on what you need it to do. As I understand it, it is not just the load current you want to suck from it, but the start-up surge current that you have to take into account for starting things like motors or compressors etc - they all suck quite large start-up currents. Not for long, but long enough to shutdown or otherwise disable a light-weight inverter.

Considering the trouble you have to go to to build a micro inverter, a little more cash can allow you to build a much gruntier unit.

It is better to have the capacity and not need it, then need it and not have it.

Having said that, again - what were you thinking of trying to run with a micro one?

Smoke makes things work. When the smoke gets out, it stops!

Phil23
Guru

Joined: 27/03/2016
Location: Australia
Posts: 1667

Posted: 04:50pm 03 Jan 2017

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Just curious,

A friend has just put in a 20kVA micro inverter system. 64 panels each with their own inverters. 10 Lithium battery packs, each 1.2kVA from memory.

Would be interesting if I could run my office off something similar. It consumes a base load of about 1kVA.

It's interesting to see the monitoring on the 64 panel, all outputs varying when a bit of shading hits.

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