Request for Insights: Study on Mismatch Losses Using pvlib Library

[Luiz Filipe Santana Oliveira Reis]

Dear all,

I am initiating a study on losses due to mismatch as a function of the number of strings allocated in each MPPT of the inverter. For modeling, I intend to use the pvlib library. I would like to know if anyone here has already conducted a similar study using this library or if there are any articles to suggest at this early stage of research.

Thank you immensely for your support in advance.

[cwh...@sandia.gov]

Luis,

What is the assumed source of the mismatch loss? Variation in irradiance or module capabilities among the strings? Or something in the inverter itself?

There's a number of prior studies about mismatch loss from variation in condition of series-connected modules in a single string. I don't recall offhand studies of mismatch among parallel strings. The multi-input inverter model in pvlib assumes that all MPPTs in the inverter are identical, so if you are investigating variation among MPPTs, I'm quite interested in what you find.

Cliff