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A large number of distributed generations (DGs) connected to the distribution network have a significant impact on the stability of the power system due to their low inertia. Meanwhile the DGs are generally linked to the end of the distribution network, where power quality problems are very common. This paper applies virtual synchronous generator (VSG) technology in three-phase four-leg inverter....
There are lots of power electronic converters, nonlinear loads, and reactive loads in a micro-grid, which may worsen the power quality and affect the stability, efficiency, as well as economical operation of the micro-grid significantly. A novel approach is presented to share the harmonic and reactive currents of a micro-grid using scattered multi-functional grid-connected inverters (MFGCI) without...
A novel multi-functional grid-connected inverter (MFGCI) is presented in this paper, which can enhance power quality at the point of common coupling (PCC), compensating the unbalanced, harmonic and reactive current simultaneously. To achieve comprehensive compensation, comprehensive indicators of power quality are proposed and a multi-objective optimal mathematical model is built with some constraints...
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