TY - GEN
T1 - Research on Optimal Virtual Impedance Harmonic Suppression Method for Grid-connected Inverter
AU - Rong, Shuang
AU - Xu, Mingyu
AU - Chen, Xiaoguang
AU - Liu, Zhixiong
AU - Su, Hang
AU - Li, Haoyu
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - Due to the high permeability of distributed energy connected to distribution network, there will be more harmonic current and resonance phenomena in the microgrid system when the nonlinear loads are connected, resulting in voltage distortion at the point of common coupling (PCC). Aiming at the problem of voltage distortion, this paper proposes an optimal virtual impedance harmonic suppression method based on the grid-connected inverter. By reshaping the output impedance of grid-connected inverter, the PCC voltage harmonics are effectively suppressed. Considering harmonic components and load types, the PCC voltage harmonic suppression coefficient is used as the evaluation standard to obtain the optimal combination mode of the resistance-inductance virtual impedance (RIVI). Moreover, to achieve the current tracking without error, the proportional integral multi-quasi-resonant (PIMQR) controller is added to the RIVI control system. Finally, based on the RT-BOX hardware-in-the-loop experimental platform, different working conditions are experimentally verified. The experimental results prove the effectiveness and accuracy of the proposed RIVI control method.
AB - Due to the high permeability of distributed energy connected to distribution network, there will be more harmonic current and resonance phenomena in the microgrid system when the nonlinear loads are connected, resulting in voltage distortion at the point of common coupling (PCC). Aiming at the problem of voltage distortion, this paper proposes an optimal virtual impedance harmonic suppression method based on the grid-connected inverter. By reshaping the output impedance of grid-connected inverter, the PCC voltage harmonics are effectively suppressed. Considering harmonic components and load types, the PCC voltage harmonic suppression coefficient is used as the evaluation standard to obtain the optimal combination mode of the resistance-inductance virtual impedance (RIVI). Moreover, to achieve the current tracking without error, the proportional integral multi-quasi-resonant (PIMQR) controller is added to the RIVI control system. Finally, based on the RT-BOX hardware-in-the-loop experimental platform, different working conditions are experimentally verified. The experimental results prove the effectiveness and accuracy of the proposed RIVI control method.
KW - harmonic suppression
KW - optimal virtual impedance
KW - proportional integral multi-quasi-resonant controller
KW - weak power grid
UR - https://www.scopus.com/pages/publications/85162661378
U2 - 10.1109/ACPEE56931.2023.10135660
DO - 10.1109/ACPEE56931.2023.10135660
M3 - 会议稿件
AN - SCOPUS:85162661378
T3 - Proceedings - 2023 8th Asia Conference on Power and Electrical Engineering, ACPEE 2023
SP - 585
EP - 591
BT - Proceedings - 2023 8th Asia Conference on Power and Electrical Engineering, ACPEE 2023
A2 - Lie, Tek-Tjing
A2 - Luan, Wenpeng
A2 - Liu, Youbo
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th Asia Conference on Power and Electrical Engineering, ACPEE 2023
Y2 - 14 April 2023 through 16 April 2023
ER -