Premium
An improved control strategy for hybrid series active filter dealing with unbalanced load
Author(s) -
Tung Nguyen Xuan,
Fujita Goro,
Horikoshi Kazuhiro
Publication year - 2011
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.20663
Subject(s) - harmonics , control theory (sociology) , harmonic , sequence (biology) , nonlinear system , series (stratigraphy) , power (physics) , engineering , control (management) , three phase , active filter , filter (signal processing) , computer science , voltage , electrical engineering , artificial intelligence , paleontology , physics , quantum mechanics , biology , genetics
This article presents an improved control strategy for hybrid series active power filters (HSAFs) working with nonlinear and unbalanced three‐phase three‐wire loads. An algorithm based on the instantaneous power theory is introduced to precisely extract only harmonic components from supply current, even this current is contaminated with negative sequence components due to the imbalance of the load. An improved control strategy based on that sequence extraction algorithm is proposed and investigated in detail by numerical simulations. The proposed control method has shown a better performance in mitigating harmonics, especially for the nonlinear and unbalanced loads. © 2011 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.