Open AccessComposite observer‐based control algorithm for distribution static compensator in four‐wire supply system
Author(s) -
Singh Bhim,
Raj Arya Sabha
Publication year - 2013
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2012.0412
Subject(s) - control theory (sociology) , voltage , ac power , observer (physics) , engineering , harmonic , computer science , control (management) , electrical engineering , physics , quantum mechanics , artificial intelligence
This study presents an implementation of composite observer‐based control algorithm in three‐leg voltage source inverter (VSI)‐based distribution static compensator (DSTATCOM) in four‐wire power distribution network. This control algorithm is used for extraction of load fundamental current components of polluted load currents. These components of load currents are used for estimation of reference source currents to generate the gating pulses of insulated gate bipolar transistors used in VSI of DSTATCOM. This control algorithm is implemented for mitigation of power quality problems such as reactive power compensation, harmonic elimination and load balancing under linear/non‐linear loads. The performance of DSTATCOM is found quite satisfactory for these unbalanced loads.