Open AccessControl and design of a current source united power quality conditioner with fault current limiting ability
Author(s) -
Guo Wenyong,
Xiao Liye,
Dai Shaotao
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.2012.0297
Subject(s) - current limiting , control theory (sociology) , harmonics , fault (geology) , compensation (psychology) , matlab , electronic engineering , fault current limiter , current (fluid) , computer science , power (physics) , modulation (music) , voltage source , inductor , filter (signal processing) , engineering , voltage , control (management) , electric power system , electrical engineering , physics , quantum mechanics , artificial intelligence , psychology , philosophy , aesthetics , seismology , geology , psychoanalysis , operating system
This study proposes control and design methods for a current source united power‐quality conditioner (CS‐UPQC). Unipolar modulation and parameter design methods are proposed for the series CS converter. The proposed modulation method doubles the equivalent switching frequency, which makes it possible to reduce the filter size and improve the control dynamics. Modified repetitive control schemes are presented for the voltage and current compensation strategies, which provide large open‐loop control gains at the integral multiple of the fundamental frequency and guarantee good harmonics compensation performance. A fault current limiting scheme is also presented, which limits the fault current effectively by utilising the large DC link inductor of the CS‐UPQC. Simulation results in Matlab/Simulink are presented to clarify the theory and feasibility of the proposed approaches.