Can you explain the relationship between the inverter MPPT and the optimized module/string?

For a great explanation on the science of Tigo’s MPPT please see the article and whitepaper called “Impedance Matching”. The Tigo technology effectively sets the string current using the best module(s) as a reference. The inverter sees a relatively steady current and adjusts the global load on the system to find MPP at a system level.

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