As an expert that designs power inverters, i'd say that single inverter vs a distributed inverter network choice depends highly on the application. For most homes, a single inverter is fine. For a large industrial system, a micro-inverter network might be better for reliability and maintenance reasons. There's also a system that uses distributed dc-dc converters on each string of solar panels and the dc from the many converters is combined in series, parallel, or series-parallel and input to a single inverter. This is a very good choice for solar due to high reliability.
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