Guys,
I have 23Kw of Solar on 2 x 3 phase inverters on the house. About to get a single phase A/C coupled battery solution.
In the event the grid goes down - obviously my inverters will not work.
I had a thought to do the following
1) Isolate from the grid
2) Couple from the backup feed of my battery system to a VFD 1phase - to 3phase converter
3) Create a micro grid to enable the inverters to startup and feed house loads etc and charge the battery as required through the AC coupled inverter.
Would this work or would the inverters try to backfeed the VFD device and cause some havoc ?
And to add to this my inverters both support Zero Export control - which can be set either through an energy meter or through setting a modbus register which is how i would control it.
In this instance if we were without grid power for any lengthy period i could also isolate a number of my solar strings through DC isolators that are mounted next to each inverter (thus varying the total amount of PV being harvested at any point.
Craig
I have 23Kw of Solar on 2 x 3 phase inverters on the house. About to get a single phase A/C coupled battery solution.
In the event the grid goes down - obviously my inverters will not work.
I had a thought to do the following
1) Isolate from the grid
2) Couple from the backup feed of my battery system to a VFD 1phase - to 3phase converter
3) Create a micro grid to enable the inverters to startup and feed house loads etc and charge the battery as required through the AC coupled inverter.
Would this work or would the inverters try to backfeed the VFD device and cause some havoc ?
And to add to this my inverters both support Zero Export control - which can be set either through an energy meter or through setting a modbus register which is how i would control it.
In this instance if we were without grid power for any lengthy period i could also isolate a number of my solar strings through DC isolators that are mounted next to each inverter (thus varying the total amount of PV being harvested at any point.
Craig
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