The 3-phase 4-wire voltage sag generator based on three dimensions space vector modulation in abc coordinates

Voltage sags from fault or ground fault are the most prevalent disturbances in electrical power system. A recent survey attributes them to 92% of all disturbances. This paper presents the simulation and experimental of 3 phase 4 wire voltage sag generator based on three dimensions space vector modulation in abc algorithm to produce voltage sag for testing electrical equipment. Experimental results have shown that this prototype can be used as voltage sag generator in any conditions.