Hybrid Inverter: Difference between revisions
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*There is a cheaper $1350 model, not split phase, but 2-stackable to split phase 240, and 3-stackable to 3 phase, and stackable up to 6 units - but input voltage is a bit lower at 250V [https://sungoldpower.com/products/6500w-48v-solar-charge-inverter-parallel-wifi-monitor] | *There is a cheaper $1350 model, not split phase, but 2-stackable to split phase 240, and 3-stackable to 3 phase, and stackable up to 6 units - but input voltage is a bit lower at 250V [https://sungoldpower.com/products/6500w-48v-solar-charge-inverter-parallel-wifi-monitor] | ||
*There are cheapo hybrid inverters on Ebay - $700 6kW - not stackable? Are they also PV-only capable without battery? [https://www.ebay.com/itm/304323316557?hash=item46db154b4d:g:If8AAOSwCVRhryBk&amdata=enc%3AAQAHAAAA4AtJMNjql8PlYPYyjMCknSqCVo%2Bwq1CpHkzBeqF8IxfNSAgnLC8w5EsD5ZmInvxymQO26l%2Fzv%2BbKRsLiklkDBPu4f2zFUKlVrjr6M1uioV%2BxYVM%2FAgVVQEdEPZLhvICFBEsAHQFzck8J2jA6NxoXrGfDWWjOSpsXB5BYbzPGIYDwcdJnNpEnmaPsNU1%2FQqAbA%2Bf5ogSdXjNsFdabzz7vsZvArUsc6wvrhvpytVv3AEtMW9UJb%2FPkNKXNbWazwyIL332%2BT2AR354i8i3YBMpzJCYypCKPrpuvcR3gNOLJ2VR5%7Ctkp%3ABFBM3uvarcRg] | *There are cheapo hybrid inverters on Ebay - $700 6kW - not stackable? Are they also PV-only capable without battery? [https://www.ebay.com/itm/304323316557?hash=item46db154b4d:g:If8AAOSwCVRhryBk&amdata=enc%3AAQAHAAAA4AtJMNjql8PlYPYyjMCknSqCVo%2Bwq1CpHkzBeqF8IxfNSAgnLC8w5EsD5ZmInvxymQO26l%2Fzv%2BbKRsLiklkDBPu4f2zFUKlVrjr6M1uioV%2BxYVM%2FAgVVQEdEPZLhvICFBEsAHQFzck8J2jA6NxoXrGfDWWjOSpsXB5BYbzPGIYDwcdJnNpEnmaPsNU1%2FQqAbA%2Bf5ogSdXjNsFdabzz7vsZvArUsc6wvrhvpytVv3AEtMW9UJb%2FPkNKXNbWazwyIL332%2BT2AR354i8i3YBMpzJCYypCKPrpuvcR3gNOLJ2VR5%7Ctkp%3ABFBM3uvarcRg] | ||
*$700 6.2kW - no battery capable? Yes. Stackable?. Only 230 AC not split phase? [https://www.ebay.com/itm/304487139911?_trkparms=amclksrc%3DITM%26aid%3D1110002%26algo%3DSPLICE.SOI%26ao%3D1%26asc%3D240666%26meid%3Da10fba6d06974bd19e175fd307a90866%26pid%3D101196%26rk%3D2%26rkt%3D12%26sd%3D304323316557%26itm%3D304487139911%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DPromotedSellersOtherItemsV2WithMLRv3%26brand%3DPowMr&_trksid=p2047675.c101196.m2219&amdata=cksum%3A304487139911a10fba6d06974bd19e175fd307a90866%7Cenc%3AAQAHAAABALB59iZaq6L1SxCGLGoiBqHdpPz8nqKyKuGL1QIa0H%252B4%252FWcIFO%252BLa6ucxv%252FepuxoQe03%252F786lX7wBnMVGWqwvJ07ygRv9rRYKyGgnOU1mllHfbX%252BImr0cxUyosbVLSI%252BrIbIAw0Rm4RdaDRnytwYudaqrDACN3ix%252FcaWAb%252FJr9gvR7%252FF2xW9cupvVHkJzmIC%252FiCj3sZhhvGOh%252F%252B7lKMlwEebfuDdzYGDa97YYDqUBdI8rchZhwLv8Xy0O8%252FTiTI%252FiU%252BRnLSQd7tVpbdPf26oXtZuHyQSpdCg0A7qp1F4CqGejQEZ69TkMQq%252B7fgunIEjFODcvoqyd8c2dDgxMX4qHJ4%253D%7Campid%3APL_CLK%7Cclp%3A2047675] | |||
Revision as of 18:20, 22 July 2022
Costs
But That is Ridiculous
If grid goes down, so does your solar power! That's not acceptable for critical operations during the day. There is a complex solution: essentially set up another off-grid inverter system that powers your on-grid inverter without grid. Ridiculous and expensive. [3] and [4]
Solution - OSE Hybrid Inverter System. No batteris, up when sun is up, no grid needed.
Disadvantage: up only when sun is out.
Advantage: no batteries needed. Switch back to grid as needed.
Key: have enough PV to run everything that you need, and to shut off loads via a smart controller. Using cheapo 63A automatic transfer switches with Arduino will work. Get out the CNC circuit mill and build circuits as needed.
Hybrid Inverters
- Have a small bat bank and can operate without grid. [5]
- Not clear how the solar mode operates - does it put out the full power of the panels?
- $1600 - hybrid 6kW solar inverter (450VDC input max)- does it work at full PV output without batteries? Does it work at full PV output when grid is down, and sun is available, on a small battery? [6]? Does it work at full PV output when grid is down and there is no battery? If this thing can work full PV output - with grid signal (not using grid) - then this meets our needs. Or, does it switch 100% to grid whenever it's overloaded
- On-grid - it's not pass-through - max grid power it puts through is 6kW - [7].
- This would be impractical for most homes if they are not energy-efficient smart homes. Does not leave chance of higher power use, such as heavy power tools
- Hybrid inverter allows battery-only, grid-only, and solar only modes, but limit in all modes is 6kW:
- On-grid - it's not pass-through - max grid power it puts through is 6kW - [7].
- This inverter appears to be stackable, but requires grid + PV connections to make this happen - up to 9 inverters, 54kW. Each inverter connects to the same battery. For single unit use- battery can be avoided all together. This means that small buffer battery should also work for up to 54kW?
- There is a cheaper $1350 model, not split phase, but 2-stackable to split phase 240, and 3-stackable to 3 phase, and stackable up to 6 units - but input voltage is a bit lower at 250V [8]
- There are cheapo hybrid inverters on Ebay - $700 6kW - not stackable? Are they also PV-only capable without battery? [9]
- $700 6.2kW - no battery capable? Yes. Stackable?. Only 230 AC not split phase? [10]