No need to ³downconvert². Some MPPT controllers do this for you, such as the
BZ500. There are others as well.
Chris
On 7/16/09 9:05 PM, "Mike" <biankablog@verizon.
>
>
>
>
> Roger:
>
> When I installed my Thoosa 9000. I already had two Siemens 75 watt panels for
> the 12 volt house system. I bought two more Siemens (now Shell) 75 watt panels
> and came up with a switching system so that I could configure the panels to
> either charge the 48 volt motor bank or the 12 volt house bank. Then I found a
> 60 watt 48 volt Kanaka panel for about $250 (I bought two) which simplified
> things immensely when charging the motor bank. I installed one Kanaka 48 volt
> panel on the boat last year along with two 75 watters for the 12 volt house
> bank. This year to get in the boat in the water faster I only installed the
> one 48 volt and one 12 volt 75 watt panel while I came up with a mounting
> scheme for the other two panels. But, I found that my needs are being met by
> the two panels alone. Sometimes less is more. You might try a 48 volt panel
> and downconvert it via a dc to dc converter to charge your 36 volt bank.
>
> Mike
> http://biankablog.
>
> --- On Thu, 7/16/09, roger.dann <dann.roger@gmail.
> <mailto:dann.
>
> From: roger.dann <dann.roger@gmail.
> Subject: [Electric Boats] solar panel selection
> To: electricboats@
> Date: Thursday, July 16, 2009, 1:53 PM
>
>
>
> What is the latest technology for solar panels suitable for marine electric
> drives. This area seems to be changing quickly and the types and costs are all
> over the place. Anyone with experience on this and can offer some advice? I
> have a 36v system and really want to keep the installation light.
> Roger
>
> [Non-text portions of this message have been removed]
>
>
>
>
>>
[Non-text portions of this message have been removed]
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