Hi Folks, glad to know such a forum exists for people to post questions and get expert answers anything solar. I’m from the central Philippines and you would not believe how high power rates here are. I live in an island but there’s grid power because there’s a causeway connecting us to the mainland.
Frequent blackouts is a norm here. An average of 2-3 times a week and for several hours each time. When a storm passes anywhere in the region, no power for a week or two.
Tried several solar companies here and the quotes are very high. I looked at buying direct from China since most solar companies here source their supply there. After a few months of reading/asking/googling/youtube/blogs etc. I have decided to go with a hybrid wind and solar setup considering I’m on a hill in the island and it can be windy here 3 days in a week average.
My setup is 96 volts system.
3 strings panels paralleled:
watts - 200w rated max power (12 pcs.)
tolerance : +/- 3%
vmp - 36.0v
current at pmax (imp) - 5.56a
voc - 44.2v
Charge Controller 96V 3kw Solar and 2kw Wind with dumpload: http://demingpower.en.alibaba.com/pr..._load_5KW.html
8 pcs. 150AH in series of these Batteries - http://www.motolite.com/products/sol...ycle-batteries
2kw Wind Turbine: http://www.alibaba.com/product-detai...38.35.1.XH9INV
This inverter has Grid bypass and does not have charging function: http://panpower.en.alibaba.com/produ...ar_System.html
This is my issue. First time I switched to the batteries from the grid (2 weeks ago), the brand new delivered batteries lasted before inverter switched to grid for 16 hours with an average of 1kw/hr load. Since then, this is the daily scenario:
The panels would start charging batteries as early as 6:30 a.m. 400-450 watts
By 9 to 11 a.m. controller would show 1-1.2KW charging rate
By 11am -2 pm controller would show 2-2.2 sometimes 2.4KW charging rate
Past 2 p.m. to 4 p.m. charging rate would be back to 700-900 watts
After 4 p.m. it would be back down to 350-400.
Before 11 a.m.most of the time, the controller starts dumping load. Batteries voltage would reach 114V and inverter indicates 100% battery charge. At this point, inverter auto switches to battery. My load from 11 a.m. to 3 p.m. would be 1.5kw/hr. From 3 p.m. to 8 p.m. is 1kw/hr. By 7 p.m., my 1,200AH battery bank fully charged at 11 a.m. will be down to 20% as per display on Inverter LCD and 94V on charge controller and inverter would auto switch to grid.
It would stay on grid till around 11 a.m. next day. This is the daily scenario except for 4 days where strong, continuous southwest monsoon winds was giving me 1.5-2kw power almost round the clock.
My biggest question is, the brand new batteries delivered and connected the first day I switched to this system had a run time of 16 hours on a similar load. While the same battery bank charged (as indicated by inverter switching to Battery and controller showing 114V and dumping load) by solar and wind power has a run time of only 7-8 hours????
Would greatly appreciate your opinions and advises. Thank you for taking the time to read this.
Frequent blackouts is a norm here. An average of 2-3 times a week and for several hours each time. When a storm passes anywhere in the region, no power for a week or two.
Tried several solar companies here and the quotes are very high. I looked at buying direct from China since most solar companies here source their supply there. After a few months of reading/asking/googling/youtube/blogs etc. I have decided to go with a hybrid wind and solar setup considering I’m on a hill in the island and it can be windy here 3 days in a week average.
My setup is 96 volts system.
3 strings panels paralleled:
watts - 200w rated max power (12 pcs.)
tolerance : +/- 3%
vmp - 36.0v
current at pmax (imp) - 5.56a
voc - 44.2v
Charge Controller 96V 3kw Solar and 2kw Wind with dumpload: http://demingpower.en.alibaba.com/pr..._load_5KW.html
8 pcs. 150AH in series of these Batteries - http://www.motolite.com/products/sol...ycle-batteries
2kw Wind Turbine: http://www.alibaba.com/product-detai...38.35.1.XH9INV
This inverter has Grid bypass and does not have charging function: http://panpower.en.alibaba.com/produ...ar_System.html
This is my issue. First time I switched to the batteries from the grid (2 weeks ago), the brand new delivered batteries lasted before inverter switched to grid for 16 hours with an average of 1kw/hr load. Since then, this is the daily scenario:
The panels would start charging batteries as early as 6:30 a.m. 400-450 watts
By 9 to 11 a.m. controller would show 1-1.2KW charging rate
By 11am -2 pm controller would show 2-2.2 sometimes 2.4KW charging rate
Past 2 p.m. to 4 p.m. charging rate would be back to 700-900 watts
After 4 p.m. it would be back down to 350-400.
Before 11 a.m.most of the time, the controller starts dumping load. Batteries voltage would reach 114V and inverter indicates 100% battery charge. At this point, inverter auto switches to battery. My load from 11 a.m. to 3 p.m. would be 1.5kw/hr. From 3 p.m. to 8 p.m. is 1kw/hr. By 7 p.m., my 1,200AH battery bank fully charged at 11 a.m. will be down to 20% as per display on Inverter LCD and 94V on charge controller and inverter would auto switch to grid.
It would stay on grid till around 11 a.m. next day. This is the daily scenario except for 4 days where strong, continuous southwest monsoon winds was giving me 1.5-2kw power almost round the clock.
My biggest question is, the brand new batteries delivered and connected the first day I switched to this system had a run time of 16 hours on a similar load. While the same battery bank charged (as indicated by inverter switching to Battery and controller showing 114V and dumping load) by solar and wind power has a run time of only 7-8 hours????
Would greatly appreciate your opinions and advises. Thank you for taking the time to read this.
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