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post #7 of Old 03-07-2008
tomaz_423
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OK, I found this number in the link above:
"Power Conversion Efficiency Typical 98% at 60 amps with a 48 V battery and nominal 48 V solar array"
This is better then I expected. Of course conversion of 48 V is more effective then conversion of 17 V, but still - it is good.

I also found that: MPPT Solar Charge Controllers
Most modern MPPT's are around 92-97% efficient in the conversion

I was expecting at least 4 to 5% loos at 17V and perhaps 1,5 to 2% at 48V.
My logic was based on the old knowledge: whenever you do a solid state conversion you may expect a voltage drop of around 0,7V. This was true for Silicon transistors and chips, but technology must have moved forward.

So, if you only loos a few percent on a conversation this is great. You probably loose more on the wires.




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Beneteau Oceanis 473

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finished cruising after two years.
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