TY - GEN
T1 - Oscillatory Power Control and Consensus in Unbalanced Networks Using Grid Forming Inverters
AU - Nag, Soumyadeep
AU - Qu, Zhihua
N1 - Funding Information:
The authors are with the Department of Electrical and Computer Engineering, University of Central Florida, Orlando, FL 32816, USA (email of corresponding author: [email protected]). This work was supported in part by US Department of Energy’s awards DE-EE0007998, DE-EE0009028, DE-EE0009152, and DE-EE0009339.
Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - In this paper, a state-space nonlinear control previously designed for balanced operation of grid-forming (GFM) inverters is extended to unbalanced operations. Unbalanced voltages and currents are analyzed, and their time-varying direct, quadrature, and zero components are parameterized in terms of six constant parameters. These parameters provide primary control design choices for not only an inverter's terminal voltage but also its injections of both real and oscillatory power. It is shown that the proposed GFM control can precisely achieve a desired balanced terminal voltage under unbalanced loads. It is also shown that, by allowing the terminal voltage to be slightly unbalanced, oscillatory power can be adaptively minimized. Finally, it is illustrated that oscillatory power can also be shared among multiple GFM inverters. Case studies and their simulations demonstrate that the proposed GFM control is effective in meeting the aforementioned objectives.
AB - In this paper, a state-space nonlinear control previously designed for balanced operation of grid-forming (GFM) inverters is extended to unbalanced operations. Unbalanced voltages and currents are analyzed, and their time-varying direct, quadrature, and zero components are parameterized in terms of six constant parameters. These parameters provide primary control design choices for not only an inverter's terminal voltage but also its injections of both real and oscillatory power. It is shown that the proposed GFM control can precisely achieve a desired balanced terminal voltage under unbalanced loads. It is also shown that, by allowing the terminal voltage to be slightly unbalanced, oscillatory power can be adaptively minimized. Finally, it is illustrated that oscillatory power can also be shared among multiple GFM inverters. Case studies and their simulations demonstrate that the proposed GFM control is effective in meeting the aforementioned objectives.
KW - Grid-forming control
KW - oscillatory power
KW - power sharing
KW - unbalanced networks
KW - voltage regulation
UR - https://www.scopus.com/pages/publications/85174697986
UR - https://www.mendeley.com/catalogue/7df6d094-775f-39d5-8d2d-f245b452d90f/
U2 - 10.1109/PESGM52003.2023.10252522
DO - 10.1109/PESGM52003.2023.10252522
M3 - Conference contribution
AN - SCOPUS:85174697986
SN - 9781665464413
T3 - IEEE Power and Energy Society General Meeting
BT - 2023 IEEE Power and Energy Society General Meeting, PESGM 2023
PB - IEEE Computer Society
T2 - 2023 IEEE Power and Energy Society General Meeting, PESGM 2023
Y2 - 16 July 2023 through 20 July 2023
ER -