Authors:
Y Srinivasa Rao,Ch Narsimha Rao,K Balakrishna,DOI NO:
https://doi.org/10.26782/jmcms.2019.12.00045Keywords:
D-STATCOM,Capacitor balancing,Multi-level converter,Cascaded Hbridge multilevel converter,Abstract
This paper investigates the negative sequence current injection method for balancing the capacitor voltage in cascaded H--bridge D-STATCOM (MMCC-SSBC). Though the cascaded H -bridge D-STATCOM has the advantage of having less number of circuit components compared to Diode clamped and flying capacitor clamped D-STATCOM but the capacitor voltage balancing between the phase clusters is a main issue. Considering this problem the negative sequence current injection method is investigated under normal working condition of D-STATCOM as well as under large unbalance in the supply voltage. The performance of this technique is investigated by using MATLAB-SIMULINK modeling.Refference:
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