Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Effective Voltage Quality Control under Nonlinear Loads in Islanded Microgrid
Authors HungD.DamHung D. Dam ; Hong-Hee Lee
DOI 10.6113/TKPE/2016.21.6.465
Page pp.465-472
ISSN 1229-2214
Keywords Harmonic; Microgrid; Nonlinear loads; Voltage quality control
Abstract A nonlinear load causes harmonic distortion and hampers the performance of other loads or distributed generation (DG) sources connected to the point of common coupling (PCC). This study proposes a new control strategy to reduce harmonic components, such as fifth and seventh harmonics, at the PCC under nonlinear loads in islanded microgrids, which comprise more than two DG sources. The proposed control scheme enables the DG source to share the power commanded by the control center as well as to compensate for the voltage harmonics at the PCC. The reference current is estimated from the voltage harmonics and injecting power; thus, the control scheme is implemented without any additional hardware devices. The simulation and experimental results are presented to verify the effectiveness of the proposed control method.