Greetings,
Not sure this is right section, but let me ask here. After recent trouble with electricity we (my friend and I) decided to install solar inverter as whole house UPS system. We plan to add solar panels later, but main reason is to have power backup for power outage. So we are going to use:
Now as batteries would provide 3 - 4 hours of whole house operation that should be enough for short time power outage. But for longer time we want to add generator, as this inverter can start it automatically based on battery level. As I understand common way to use generator is to switch main power from grid to generator and use that. Those that is quite common and pretty simple way to do it, it is not optimal, as it requires generator to be able to handle high level of power including spikes.
So question is, is it possible and viable to connect generator to the one of PV inputs of the inverter? If I am not mistaken this would let us use less powerful generator - it has just to provide power above average so in middle term batteries would be charged, but spikes would be handled by inverter and batteries. So if house has average 4-5 KW with spike let's say 12KW then 8KW generator should be fine assuming inverter would limit max amperage taken from it.
Another problem is that most of common generators provide AC power but PV input requires DC. So question is does PV requires real DC or AC after rectifier bridge would be fine?
Thanks in advance
Not sure this is right section, but let me ask here. After recent trouble with electricity we (my friend and I) decided to install solar inverter as whole house UPS system. We plan to add solar panels later, but main reason is to have power backup for power outage. So we are going to use:
- Growatt 12KW 48V SPF DVM off grid inverter
- 300Ah LiFePO4 batteries.
Now as batteries would provide 3 - 4 hours of whole house operation that should be enough for short time power outage. But for longer time we want to add generator, as this inverter can start it automatically based on battery level. As I understand common way to use generator is to switch main power from grid to generator and use that. Those that is quite common and pretty simple way to do it, it is not optimal, as it requires generator to be able to handle high level of power including spikes.
So question is, is it possible and viable to connect generator to the one of PV inputs of the inverter? If I am not mistaken this would let us use less powerful generator - it has just to provide power above average so in middle term batteries would be charged, but spikes would be handled by inverter and batteries. So if house has average 4-5 KW with spike let's say 12KW then 8KW generator should be fine assuming inverter would limit max amperage taken from it.
Another problem is that most of common generators provide AC power but PV input requires DC. So question is does PV requires real DC or AC after rectifier bridge would be fine?
Thanks in advance
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