Post #7
7)What is typical MPPT controller efficiency, or for this paper, the efficiency of a Morningstar sunsaver 15 MPPT controller operating in the 130 W region???
Measuring (Or attempting to Measure) converter efficiency:
While Morningstar claims 98% efficiency, and my various calculations varied all over from about 98% to over 100%. All I can say is that my measurement equipment kept me from getting any efficiency numbers I can believe in. The Morningstar data sheet shows typical efficiency at 125W output power of 96%.
Conclusion:
I don’t have accurate enough measurement equipment or stable enough solar source to reliably and accurately calculate converter efficiency. However the data suggest that converter efficiency is likely in the 95-98% range consistent with the Morningstar claims.
