Sungrow’s 1+X Modular central solar inverter makes international debut

Sungrow modular central inverter
Sungrow Launches “1+X” Modular Inverter at World Future Energy Summit, 2022

Sungrow launched the brand new 1+X Modular central inverter at World Future Energy Summit in Abu Dhabi. The “modularity” of the 1+X inverter is seen at the inverter level, the system level and the component level. Three-level modularization makes power plant design more flexible and O&M more convenient in the future, Sungrow believes.

The 1+X Modular Inverter originally launched in the Chinese domestic market in March 2021, and orders have surpassed 500 MW thus far.

1+X modular inverter features 1.1-MW single unit as the minimum, but the block capacity can be expanded to a max. 8.8 MW by combining 8 units just like building blocks.

Modularization adds flexibility to the PV array configuration. The inverter supports maximum 2 times DC/AC ratio. 1+X modular inverter has 42% more MPPT than the traditional central inverters, and conducts string-level management via a new wireless DC combiner. Increased MPPT and more refined management lead to higher electricity generation. The DC/ESS interface supports connecting to energy storage systems.

The component modularization means more of a plug and play functionality, reducing the maintenance from 6h to 2h, according to Sungrow’s stats. Since each inverter also works as an individual unit, they can be directly replaced by onsite backup inverters if a failure occurs. Hence, the three-level modularization.

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