FGSVG from Windsun or FGi medium voltage SVG (static var generator) is a power quality control device with modular multilevel converter (MMC) topology, designed for reactive power regulation with excellent response time and efficiency, that due to its innovative characteristics provides fast dynamic reactive current (either capacitive or inductive) and facilitates power factor and voltage regulation.

Following picture is the project of 13.8kV 6MVAr Statcom(SVG), realized by 10kV Static var generator and 13.8kV/10kV Transformer.