Title :
Observer for DC voltages in a cascaded H-bridge multilevel STATCOM
Author :
de Leon Morales, Jesas ; Escalante, M.F. ; Mata-Jiménez, M.T.
Author_Institution :
Univ. of Nuevo Leon, Leon
Abstract :
Using an instantaneous model of a cascade H-bridge multilevel-based STATCOM, an observer for estimating the DC capacitor voltages of the multilevel inverter is presented. This design can be used to eliminate the voltage sensors in each H-bridge of this device. Simulation results are presented in order to validate the performance of the proposed observer applied to a cascade H-bridge multilevel-based STATCOM.
Keywords :
invertors; observers; power capacitors; power convertors; static VAr compensators; DC capacitor voltages; cascaded H-bridge multilevel STATCOM; multilevel inverter; power converters; voltage sensors;
Journal_Title :
Electric Power Applications, IET
DOI :
10.1049/iet-epa:20070063
