Title :
Frequency scanning of power electronic-based smart grids: The modular multilevel converter application
Author :
Sanchez, Santiago ; Bergna, Gilbert ; Berne, E. ; Egrot, P. ; Vannier, J.-C. ; Molinas, Marta
Author_Institution :
NTNU, Trondheim, Norway
Abstract :
The Multi-terminal HVdc systems is a key technology for bulk power transmission. The stability analysis of such power electronics-dominated power systems is a new challenge. This paper focuses on the analysis based on impedance representation of a modular multilevel converter. Therefore, a small signal input impedance modeling method is described for high and low frequencies. A comparative evaluation with the impedance obtained via simulations was performed by the application of a voltage perturbation to the DC side. In addition, the stability of the interconnection of two MMCs´ in a Back-to-Back configuration was analyzed by means of Nyquist criteria.
Keywords :
HVDC power convertors; Nyquist criterion; electric impedance; power electronics; smart power grids; Nyquist criteria; back-to-back configuration; bulk power transmission; frequency scanning; impedance representation; modular multilevel converter; multiterminal HVDC systems; power electronic-based smart grids; small signal input impedance modeling method; stability analysis; voltage perturbation; Equations; HVDC transmission; Impedance; Mathematical model; Power electronics; Power system stability; Stability analysis;
Conference_Titel :
Power Electronics for Distributed Generation Systems (PEDG), 2013 4th IEEE International Symposium on
Conference_Location :
Rogers, AR
DOI :
10.1109/PEDG.2013.6785629
