Based d-q Coordinate For The Simulation of Three Phase Grid-connected Photovoltaic System

摘要

In order to feed back the electric energy PV Array transformed to power grid fully, this paper proposes the current control strategy which can decouple the active current and reactive current using the mathematic models of three-phase grid-connected system which is built base on synchronous rotating dq frame; Through this control method, the unity power factor was gotten. Space vector pulse-width modulation (SVPWM) is used in the control of threephase voltage-source inverters (VSI). The simulation results have shown that this control strategy gets perfect dynamic and static response performance.