Studying for test about solar power. Electricity doesn’t really like me and often the feeling’s mutual.

The question goes like this (we had to figure out the 25 and 5 given more information)
25 ARRAYS -> 25 BOOST CONVERTERS -> 5 DC BUSSES -> 5 INVERTERS -> 1 AC BUS -> 500KW OF RENEWABLE GOODNESS

The part I’m confused at is that we were told “Take inverter Modulation Index = 0.9.” What is a modulation index? My best guess is that it means you have losses in the inverter and only get 90% of the energy out. Is that right?

Please explain as you would to someone who only knows ~50% of the material from every electrical course she’s taken (The “D” stands for “Done”, right?)

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