TY - JOUR
T1 - Stability Analysis of Grid-Connected Voltage-Source Converters Using SISO Modeling
AU - Zhang, Hongyang
AU - Harnefors, Lennart
AU - Wang, Xiongfei
AU - Gong, Hong
AU - Hasler, Jean Philippe
PY - 2019/8
Y1 - 2019/8
N2 - The interaction of a grid-connected voltage-source converter with a weak grid is of significant interest. In this paper, the converter together with the grid impedance is modeled as a single-input single-output (SISO) system. Provided that certain assumptions hold, this allows us to apply the standard SISO Nyquist stability criterion for stability analysis and controller design. The derived model is verified against time-domain simulations and experiments. The method facilitates the design of the converter control system with adequate stability margins.
AB - The interaction of a grid-connected voltage-source converter with a weak grid is of significant interest. In this paper, the converter together with the grid impedance is modeled as a single-input single-output (SISO) system. Provided that certain assumptions hold, this allows us to apply the standard SISO Nyquist stability criterion for stability analysis and controller design. The derived model is verified against time-domain simulations and experiments. The method facilitates the design of the converter control system with adequate stability margins.
KW - MIMO communication
KW - multi-input multi-output (MIMO)
KW - Numerical stability
KW - Nyquist stability criterion
KW - Phase locked loops
KW - Power system stability
KW - single-input single-output (SISO)
KW - Stability criteria
KW - Transfer functions
KW - voltage-source converter (VSC)
KW - weak grid
KW - Multi-input multi-output (MIMO)
UR - http://www.scopus.com/inward/record.url?scp=85055891882&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2018.2878930
DO - 10.1109/TPEL.2018.2878930
M3 - Journal article
AN - SCOPUS:85055891882
SN - 0885-8993
VL - 34
SP - 8104
EP - 8117
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 8
M1 - 8516363
ER -