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Old 12-06-2013, 08:59   #1
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Solar Charge Controller Voltage and Current Matching

I apologise if this has already been covered somewhere else!

240 to 260-watt panels are cheaper than the smaller panels watt for $, largely because they are the industry standard size for putting on house roofs. The problem is that the output voltage of these panels tends to be in excess of about 25V, which is what the majority of charge regulators for smaller solar arrays are rated to. For open-circuit panel voltages greater than this there are much larger controllers available but they really are MUCH larger (eg. morningstar's 'tristar' controller, which goes up to 150Voc and 45 amps max current) and are correspondingly more expensive. Does anyone know of a decent MPPT charge controller that has a max input voltage of 40 to 50 volts and a max current of around 30 or so? It seems like such a controller would be quite popular for the marine market. In fact, Blue Sky will shortly be coming out with a 3000i model that satisfies this gap in the market, but it's not available until around August and in the meantime i need power! Am i missing something?
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Old 12-06-2013, 09:05   #2
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Re: Solar Charge Controller Voltage and Current Matching

My two 135 watt panels are hard enough to mount as is. Can't imagine where I'd put the ones that 40% bigger. Would be a nice problem to have though.
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Old 12-06-2013, 09:16   #3
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Re: Solar Charge Controller Voltage and Current Matching

Right over the helm. Makes a lovely bimini. Built a frame for it out of stainless tubing. Also cheaper than canvas-work and UV-resistant materials!
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Old 12-06-2013, 09:17   #4
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Re: Solar Charge Controller Voltage and Current Matching

The Rogue is probably the best option:

http://www.roguepowertech.com/docume...024C1-Book.pdf

They are about to release a new model which has been promised any day

Max 100v input and about 430w max solar panel @12v
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Old 12-06-2013, 09:40   #5
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Re: Solar Charge Controller Voltage and Current Matching

Quote:
Originally Posted by noelex 77 View Post
The Rogue is probably the best option:

http://www.roguepowertech.com/docume...024C1-Book.pdf

They are about to release a new model which has been promised any day

Max 100v input and about 430w max solar panel @12v

This model has now been discontinued. Soon to be replaced with a newer model. Does anyone have any experience with this company?
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