Re: [Electric Boats] Help with Solar Panels Please

 

Hi Carter and Steve

The reason for suggesting two controllers is to get the best output from the solar array.  When one panel is shaded its voltage and current will be different to the other panel.  A single controller will not be able to see the difference and will be trying to optimise the output for the combined output which can be choked by the shaded panel.

If they are separately controlled the MPPT device can have the best opportunity to optimise the output for the particular voltage/amps combination of that panel.

Cheers

Chris

On 28/06/2012, at 4:00 AM, Carter Quillen wrote:

 

I wouldn't spend the money on two controllers because the panels have blocking diodes in them to address the partial shading issue.

 

Also, check the Xantrex C series controllers, I think you might be able to use one in conjunction with your MPPT charge controller to get where you want. The C series can be condigured as either a PWM charge controller or a load diverter.

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