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electrical:solar:panel-bank_ratio [2020/06/24 22:29] frater_secessus [2:1 overpaneling] |
electrical:solar:panel-bank_ratio [2020/06/24 22:33] frater_secessus [1:1] |
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Working backwards, fully charging lead-chemistries by 1:1 solar means requires about 8.45hrs of Full Sun Equivalent on MPPT, and about 9.7hrs FSE with PWM. **There is nowhere in the United States that averages 8.45hrs of FSE year around**. | Working backwards, fully charging lead-chemistries by 1:1 solar means requires about 8.45hrs of Full Sun Equivalent on MPPT, and about 9.7hrs FSE with PWM. **There is nowhere in the United States that averages 8.45hrs of FSE year around**. | ||
+ | Workarounds: | ||
+ | * Fully-charging becomes possible with attentive panel tilt, requiring only 5.5hrs on MPPT and 6.4hrs on PWM. | ||
+ | * fully-charging becomes possible with shallower cycling, like 75%. This is the equivalent of the 2:1 systems below. | ||
===== 2:1 overpaneling ===== | ===== 2:1 overpaneling ===== | ||
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- | Working backwards, successfully fully charging lead-chemisties | + | Working backwards, successfully fully charging lead-chemistries |
- | On average this this opens up everything but Canada and Anchorage AK. | + | On //average// this this opens up everything but Canada and Anchorage AK. |
===== 1:2 underpaneling ===== | ===== 1:2 underpaneling ===== | ||
//1:2// == 100W solar + 200Ah of battery. | //1:2// == 100W solar + 200Ah of battery. |