Frequency-adaptive sinusoidal signal integrator for grid-connected inverters in weak grids

Abstract

Sinusoidal signal integrator has the capability of controlling the ac current with zero steady-state error. However, their performances significantly degrade in case of the frequency variations with the steady-state error. So far, no literature has addressed the quantitative analysis of this steady-state error. Therefore, this paper reveals, for the first… (More)

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