Title :
Voltage stability assessment in semi-autonomous DC-grids with multiple power modules
Author :
Rykov, K. ; Duarte, Jorge ; Boeke, Ulrich ; Wendt, M. ; Weiss, Rebecca
Author_Institution :
Eindhoven Univ. of Technol., Eindhoven, Netherlands
Abstract :
Basic concepts with respect to stable operation of semi-autonomous low-voltage DC-grids are discussed. Design considerations on the output impedances of power electronic converters are analysed in order to avoid resonance issues within a DC-grid. With calculated or measured converter output impedances, potential resonance problems due to background harmonics between aggregated power modules and the DC-grid can be forecasted. Simulation results are included for verification of the proposed ideas.
Keywords :
electric impedance measurement; power convertors; power grids; power system harmonics; voltage regulators; converter output impedance calculation; converter output impedance measurement; design considerations; multiple power modules; power electronic converter output impedance analysis; resonance avoidance; semi-autonomous low-voltage DC-grids; voltage stability assessment; Impedance; Load modeling; Mathematical model; Power system stability; Stability criteria; Voltage control; Droop controls; Impedance identification; Matlab/Simulink; Nyquist stability criterion; Semi-autonomous DC-grids; Voltage instability analysis;
Conference_Titel :
Power Electronics and Applications (EPE), 2013 15th European Conference on
Conference_Location :
Lille
DOI :
10.1109/EPE.2013.6631902
