Originally posted by hobertek
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AC waterpump with solar panels
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Originally posted by hobertek View Postinverter power =ac pump power ,solar panel =1.5 *ac pump power , it can work perfectComment
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Originally posted by SunEagle View PostThat formula does not make sense. An inverter needs to be sized big enough to handle the starting power of an ac motor so inverter power does not = ac pump power.Comment
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Originally posted by hobertek View Posteven if the best pump , the efficency cannot reach the 100%
Also solar panel = 1.5 * AC pump power for maybe a couple of hours on a really sunny day, then as the sun energy goes down the pump will slow down and burn up if not cooled.
You are underestimating the solar equipment needed to run a 40hp motor long enough to pump the amount of water the OP wants.Comment
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hobertek is history - posting from Sacramento - maybe it was governor moonbeam incognito?[SIGPIC][/SIGPIC]Comment
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Franklin ( the largest submersible motor MFG) makes a solar kit for up to 3 HP for a AC 3 Phase submersible motor.
http://solar.franklin-electric.com/products.aspx#Tab4Comment
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As i mentioned earlier i saw at so many places Ac water pumps running directly from solar panels without battery. Recently I've visited one place where they newly fixed this system and it was running properly without battery. They are using Solarpanels, (special) waterpump controller/inverter that's it.Attached FilesComment
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Originally posted by djhassoonew View PostAs i mentioned earlier i saw at so many places Ac water pumps running directly from solar panels without battery. Recently I've visited one place where they newly fixed this system and it was running properly without battery. They are using Solarpanels, (special) waterpump controller/inverter that's it.
I do see about 40 solar panels which probably total about 10kw.Comment
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Originally posted by djhassoonewWaterpump was 3.5HPand they used 250w panels 40pcs with 7.5kw waterpump controller/inverter.
It runs 6/7 hours in daylight.
That is what we are trying to tell you that you can't keep that pump running at a constant speed should clouds come over or as the sun starts to set. The pump will either slow down and stop.
Without a constant power supply from a generator or battery you won't run that pump all day.Comment
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Originally posted by djhassoonew View PostI just confirmed now from the person who fixed it.
Waterpump is 7.5Hp
Solarpanels: 240w*40pcsand inverter/controller is 11kw.
It run 6/7hours in daytime
It will start slow, then peak around noon and then slow down again even if perfect sunlight.Comment
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Originally posted by SunEagle View PostHow much water can it pump during those 6/7hours?
It will start slow, then peak around noon and then slow down again even if perfect sunlight.
This way lot of money can be saved because we don't have to change batteries after few years.
Solarpanels can go for longterm.Comment
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Originally posted by djhassoonew View PostIf anybody could help me how to calculate solarpanels require for each hp?
If you are using a different pump is must be similar to that Franklin. You will not be able to run a "standard" 3 phase AC motor directly from solar panels.Comment
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Last I knew the Franklin only ran 208 three phase motors. Also not important to this topic but worth mentioning is that Lorentz solar motors are all three phase ac motors (low voltage that won't run off the grid without a special box).
I have yet to see a controller that would run a single phase ac motor. Not saying they don't exist.
BrianComment
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