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Dynamic voltage restorer based on a four-leg voltage source converter

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2 Author(s)
S. R. Naidu ; Department of Electrical Engineering, Universidade Federal de Campina Grande, Campina Grande, PB 58429-900, Brazil E-mail: ; D. A. Fernandes

Analysis and control of a dynamic voltage restorer are described. The voltage restorer is based on a four-leg voltage source converter. The three-phase input variables are resolved into the positive, negative and zero-sequence components using a weighted, recursive, least-squares estimator. Identical controllers have been used for each sequence component. A laboratory model of the restorer has been constructed and its performance has been tested by simulation and experiments.

Published in:

IET Generation, Transmission & Distribution  (Volume:3 ,  Issue: 5 )