This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
electrical:solar:panel-bank_ratio [2020/06/24 21:05] frater_secessus [1:2 underpaneling] |
electrical:solar:panel-bank_ratio [2020/06/24 22:30] frater_secessus [3:1 overpaneling] |
||
---|---|---|---|
Line 6: | Line 6: | ||
This generally considered the minimum, though it will likely work out fine in [[electrical: | This generally considered the minimum, though it will likely work out fine in [[electrical: | ||
[[electrical: | [[electrical: | ||
+ | |||
+ | 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**. | ||
+ | |||
+ | |||
+ | |||
+ | |||
===== 2:1 overpaneling ===== | ===== 2:1 overpaneling ===== | ||
//2:1// == 200W solar + 100Ah of battery. | //2:1// == 200W solar + 100Ah of battery. | ||
This slightly [[electrical: | This slightly [[electrical: | ||
+ | |||
+ | Working backwards, successfully fully charging lead-chemistries by 2:1 solar requires about 4.25hrs of Full Sun Equivalent on MPPT, and about 4.85hrs FSE with PWM. | ||
+ | |||
+ | On average, this would work in Little Rock, San Francisco, Phoenix, Birmingham, Atlanta, New Orleans, Albuquerque, | ||
+ | |||
===== 3:1 overpaneling ===== | ===== 3:1 overpaneling ===== | ||
//3:1// == 300W solar + 100Ah of battery. | //3:1// == 300W solar + 100Ah of battery. | ||
This significantly overpaneled configuration generally yields an excess of power, useful in rain, low winter sun, overcast conditions, etc. | This significantly overpaneled configuration generally yields an excess of power, useful in rain, low winter sun, overcast conditions, etc. | ||
' | ' | ||
+ | |||
+ | Working backwards, successfully fully charging lead-chemistries by 3:1 solar requires about 2.83hrs of Full Sun Equivalent on MPPT, and about 3.25hrs FSE with PWM. | ||
+ | |||
+ | 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. |