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

fYear

2013

fDate

2-6 Sept. 2013

Firstpage

1

Lastpage

10

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications (EPE), 2013 15th European Conference on

Conference_Location

Lille

Type

conf

DOI

10.1109/EPE.2013.6631902

Filename

6631902