TY - GEN
T1 - An adaptive grid-voltage sensorless interfacing scheme for inverter-based distributed generation
AU - Ibrahim, Yasser Abdel Rady
AU - El-Saadany, Ehab F.
PY - 2008
Y1 - 2008
N2 - This paper presents an adaptive grid-voltage sensorless interfacing scheme for inverter-based distributed generation (DG) units based on an adaptive grid-interfacing model. First, a discrete-time model of a current controlled gridconnected inverter is presented. Second, an adaptive gridinterfacing model is designed with low computational demand to estimate, in real-time, the interfacing (impedance) parameters seen by the inverter and the grid voltage vector simultaneously. A reliable solution to the present nonlinear estimation problem is presented by combining a grid-voltage estimator with an interfacing parameter estimator in a parallel structure. Third, the estimated quantities are utilized within the inner high bandwidth current control loop and the outer power controller to realize an adaptive grid-voltage sensorless interfacing scheme. Theoretical analysis and evaluation results are provided to demonstrate the validity and usefulness of the proposed interfacing scheme.
AB - This paper presents an adaptive grid-voltage sensorless interfacing scheme for inverter-based distributed generation (DG) units based on an adaptive grid-interfacing model. First, a discrete-time model of a current controlled gridconnected inverter is presented. Second, an adaptive gridinterfacing model is designed with low computational demand to estimate, in real-time, the interfacing (impedance) parameters seen by the inverter and the grid voltage vector simultaneously. A reliable solution to the present nonlinear estimation problem is presented by combining a grid-voltage estimator with an interfacing parameter estimator in a parallel structure. Third, the estimated quantities are utilized within the inner high bandwidth current control loop and the outer power controller to realize an adaptive grid-voltage sensorless interfacing scheme. Theoretical analysis and evaluation results are provided to demonstrate the validity and usefulness of the proposed interfacing scheme.
KW - Adaptive identification
KW - Digital current control
KW - Distributed generation
KW - Grid-voltage sensorless control
KW - Pulse-width modulated (PWM) inverters
UR - https://www.scopus.com/pages/publications/52349095856
U2 - 10.1109/PES.2008.4596237
DO - 10.1109/PES.2008.4596237
M3 - Conference contribution
AN - SCOPUS:52349095856
SN - 9781424419067
T3 - IEEE Power and Energy Society 2008 General Meeting: Conversion and Delivery of Electrical Energy in the 21st Century, PES
BT - IEEE Power and Energy Society 2008 General Meeting
T2 - IEEE Power and Energy Society 2008 General Meeting: Conversion and Delivery of Electrical Energy in the 21st Century, PES
Y2 - 20 July 2008 through 24 July 2008
ER -