DC Voltage Control Strategy for CHB-STATCOM during Capacitive-Inductive Load Transition

Weiming Zhao (Beijing University of Aeronautics and Astronautics)
Yong Wang (Beijing University of Aeronautics and Astronautics)
Bo Zhao (China Electrical Power Research Institution)

Indonesian Journal of Electrical Engineering and Computer Science
Vol 10, No 7: November 2012

Fluctuation of DC capacitor voltage of CHC-STATCOM(Cascaded H-Bridge Converter Based STATCOM) during capacitive-inductive load transition affects the dynamic response of the equipment and, with combination of other factors like of the switching devices, can degrade the stability of the equipment. This paper illustrates the cause ofthe voltage fluctuation and proposes a novel and practical control strategy to suppress it. A simulation was conducted to testify its effectiveness. DOI: http://dx.doi.org/10.11591/telkomnika.v10i7.1570